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5dd9834009
tomato-testing/imgui_draw.cpp
Green Sky 5dd9834009 Squashed 'external/imgui/imgui/' changes from d6cb3c923d2..b475309fa1e 
b475309fa1e Fonts: Fixed font ascent and descent calculation when a font hits exact integer values. (#7399, #7404)
daecfffefbc Text, DrawList: Improved handling of long single-line wrapped text. (#7496, #5720)
fab96a6e593 Backends: SDL3: Re-enable calling SDL_StartTextInput()/SDL_StopTextInput(). (#7452, #6306, #6071, #1953)
dad1689bf7b Examples: SDL3: amend for removal of SDL_RENDERER_ACCELERATED.
3caa79c8a53 Version 1.90.6 WIP
76bc1b825e6 Extracted part of NewFrame() into SetupDrawListSharedData() for documentation purpose. (#7495, #6406)
f790d516652 Silent zealous/stupid warning introduced by Clang 16 (shipping with VS2022) with -Weverything. Pointers are now illegal!
231cbee0fc4 Version 1.90.5
4f9ba19e520 Drags, Sliders, Inputs: Reactivated decimal point replacement for SliderScalar and DragScalar. (#7389, #6719, #2278)
e7712ff103d Out of courtesy/consistency move all the DebugHookIdInfo compares into ifndef block.
f959c417fec Refactor moving ID stack functions to their own section (part 2)
0bf134a8e2e Refactor moving ID stack functions to their own section.
9a2b598ec1e ListBox: Fixed text-baseline offset when using SameLine()+Text() after a labeled ListBox().
d3c3514a59b Tables: Fixed auto-width columns when using synced-instances of same table. (#7218)
25a492f3307 ProgressBar: Fixed passing fraction==NaN from leading to a crash. (#7451)
9638c2839a1 Internals: adding ImGuiNavMoveFlags_NoClearActiveId even though there's currently no satisfying way to take advantage of it. (#1418)
742e53434f4 Child Windows: adjust resizing limits to match window padding rather than inner clipping rectangle. (#7440)
515b437c084 Child windows: look at the parent window's flags to decide whether to clamp child resizes. (#7440, #1710)
976dc239656 Windows: extend outer resize borders to the edges when there are no corner grips. (#7440, #1710)
37b37fc2a3e DrawList: Allow AddText() to accept null ranges. (#3615, 7391)
5c5ae806aa1 Comments
cf4c10bef74 Style: added ImGuiStyleVar_TabBorderSize, ImGuiStyleVar_TableAngledHeadersAngle. (#7411)
f0802287db5 Tables: Angled headers: fixed table contents overflowing when a list clipper is used. (#7416)
29ff159f941 Tables: Angled headers: fixed borders not moving back up after TableAngleHeadersRow stops being called. (#7416)
38ddfb24f09 Tables: Angled headers: fixed border hit box extending beyond non-scrollable tables. (#7416)
8be48a44f78 Backends: WebGPU: Avoid using -1u literal (#7436)
868facff9de ImDrawList: (Breaking) merge float radius_x/radius_y parameters into ImVec2 radius in PathEllipticalArcTo(), AddEllipse(), AddEllipseFilled(). (#2743, #7417)
0a1f5b94e31 Demo: Two minor fixes (unchecked BeginTooltip + incorrect height constraint) (#7410)l
40df3db1a2a Tweaking terminology
da29b776eed Backends: SDL3: Fix leak of SDL_GetGamepads() return value (#7381)
3c435c02978 Inputs: (Breaking) More formally obsoleted GetKeyIndex() when IMGUI_DISABLE_OBSOLETE_FUNCTIONS is set. (#4921)
286cd5bd41e Internals, InputText: removed ImGuiInputSource_Clipboard. (#4005)
fc570ac9225 Examples: WGPU: fixed initialization of WGPURenderPassColorAttachment (#7371)
65dc67f63c6 Windows: Double-click to collapse may be disabled via key-ownership mechanism. (#7369)
6b7358e9f36 InputText: adding clarifying note about ImGuiInputTextCallbackData::Buf. (#7363)
fbf45ad149b ImDrawList: add PathFillConcave(), AddConcavePolyFilled(): amends (#760)
1ff90c52d5f ImDrawList: add PathFillConcave(), AddConcavePolyFilled() (#760)
04f40014a62 Docs: added a mini wiki index in main source files.
c6236699671 Added link to crawlable wiki
0573513d6df Windows: Scrollbar visibility decision uses current size when both size and contents size are submitted by API. (#7252)
44c7dfca030 Menus, Popup: Amend c3f8f4d for static analyzer warning ("condition always true"). (#7325)
c3f8f4de257 Menus, Popups: Fixed an issue where sibling menu popups re-opening in successive frames would erroneously close the window. (#7325, #7287, #7063)
98779417751 Popups, Menus: rename ImGuiPopupData::BackupNavWindow > RestoreNavWindow and minor tweaks. Should be functionally a no-op.
725f91922d5 Tables: fixed TableGetHoveredRow() with overlapping frozen rows (#7350, #6588, #6347, #6250)
e46d1e69ac3 Version 1.90.5 WIP
277ae93c413 Version 1.90.4
f5be90523d6 Nav: Fixed SetKeyboardFocusHere() or programmatic tabbing API from not working on windows with the ImGuiWindowFlags_NoNavInputs flag.
13d91ff9188 Nav: Fixed SetKeyboardFocusHere() or programmatic tabbing API from not working on windows with the ImGuiWindowFlags_NoNavInputs flag.
34965cf23a7 Modals: Temporary changes of ImGuiCol_ModalWindowDimBg are properly handled by BeginPopupModal(). (#7340)
659fb41d0a2 Debug Tools: moved DebugStartItemPicker() to public API. Added to Demo->Tools menu. (#2673)
198c38f0b11 Demo: Custom Rendering: better demonstrate PathArcTo(), PathBezierQuadraticCurveTo(), PathBezierCubicCurveTo(), PathStroke(), PathFillConvex() functions.
3b6d924acd0 ProgressBar: Fixed a minor tesselation issue when rendering rounded progress bars.
d3f1a7165cb Popups: allow Child Popups to be resizable if not explicitly disabling.
e78ce72eb6d Popups: Fixed resizable popup minimum size being too small. Standardized CalcWindowMinSize() logic a bit more. (#73290
014e0ac8c92 Menus, Popups: Fixed an issue where hovering a parent-menu upward would erroneously close the window. (#7325, #7287, #7063)
c16043c1d58 Tables: Angled headers: improve clipping of text since multi-line labels makes clipping issues visible. (#6917)
405e54ebd50 Tables: Angled Headers: fixed support for multi-line labels. various padding/layout fixes. (#6917)
6655ab2e43f Tables: Angled Headers: fixed TableAngledHeadersRow() incorrect background fill drawn too low. Fixed row geometry with non-small values of CellPadding. (#6917)
9159cd7b4ac Updated invalid documentation link (#7331)
ccc5347e451 Fix typos (#7332)
8a14b71f228 Version 1.90.4 WIP
b19a4c5f2b3 Backends: OSX: remove legacy clearing of io.NavInputs in ImGui_ImplOSX_UpdateGamepads(). (#7320)
5b6f03213dd Version 1.90.3
f80e65a4068 Backends:,Examples: Vulkan: moved RenderPass parameter from ImGui_ImplVulkan_Init() function to ImGui_ImplVulkan_InitInfo structure. (#7308)
829f45df994 Backends: SDL2: removed obsolete ImGui_ImplSDL2_NewFrame(SDL_Window*) signature which was obsoleted in 1.84..
3cc37170ca7 Examples: GLFW+Metal: Add -I and -L paths for MacPorts.
891b81fc5d7 Backends: SDL3: Fixed gamepad. Added support for disconnection. Added support for multiple gamepads. Added ImGui_ImplSDL3_SetGamepadMode(). (#7180, #3884, #6559, #6890)
262e30e3001 Backends: SDL2: rework new API as ImGui_ImplSDL2_SetGamepadMode(). (#3884, #6559, #6890, #7180)
9dfa2397deb Internals: Fixed ImFileOpen not working before context is created. (#7314, #7315)
d15e4100b83 Backends: SDL2: Amend new API, all support for multiple gamepads. (#3884, #6559, #6890)
f966da1f8fb Backends: SDL2: Gamepad handlng: amend bf1c96d. (#3884, #6559, #6890)
bf1c96d4fa2 Backends: SDL2: Handle gamepad disconnection + fixed increasing refcount. Added  ImGui_ImplSDL2_SelectGamepadAuto()/ImGui_ImplSDL2_SelectGamepadExplicit(). (#3884, #6559, #6890)
fd8d6dc5d19 Backends: SDL2,SDL3: tidying up.
e0ba0d0433a Backends: Vulkan: Fixes for building with pre Vulkan 1.3. Amend 8901931. (#7166)
11d73f03ee5 Backends: Vulkan: Fix/amend 8901931
89019319ddb Backends: Vulkan: use PipelineRenderingCreateInfo for dynamic rendering (#7166, #6855, #5446, #5037)
1d6f0cea0e6 Backends: DX9: use RGBA texture to avoid conversion if supported
3af739a2d17 Menus, Popups: fixed menus and popups with child window flag erroneously not displaying a scrollbar when contents is over parent viewport size. (#7287, #7063)
2af01baffd1 Backends: SDLRenderer3: query newly added SDL_RenderViewportSet() to not restore a wrong viewport if none was initially set.
915c6393ad7 Version 1.90.3 WIP
536090303a8 Version 1.90.2
7b5357d817e Debug Tools: Metrics: Improved Monitors and Viewports minimap display. Highlight on hover.
70aa717a8e1 Combo: Fixed not reusing windows optimally when used inside a popup stack.
5cdc4a2a413 Demo: use ImGui::MemAlloc/MemFree for consistency. (#7300)
76e09c4b0fa ClosePopupsOverWindow(): amend to remove _ChildWindow test.
3a078466a7a Nav: ImGuiWindowFlags_NoNavInputs is tested during scoring so NavFlattened windows can use it.
7d67623d15b InputText: Internal: ReloadUserBufXXX functions don't override revert value. (#2890) fix accidental comment.
a5e0e90c16a Nav: tweak RenderNavHighlight() syntax. ImGuiNavHighlightFlags_TypeThin -> ImGuiNavHighlightFlags_Compact.
1e8fc01ddd7 InputText: Internal: ReloadUserBufXXX functions don't override revert value. (#2890) + rename
a06dd7a27b6 OpenPopup(): Added ImGuiPopupFlags_NoReopen. Nav, Menus: Fixed click on a BeginMenu() followed by right-arrow. (#1497, #1533)
f104967c68f Comments
06ce312745e InputText: Internal: added reload from user-buf feature. (#2890)
f50ddc431e3 Fixed some typos. (#7282)
6172c22c5dc CI: Update to `actions/checkout` `v4` from `v3`. (#7281)
96839b445e3 Nav: Improve handling of Alt key to toggle menu so that key ownership may be claimed on indiviudal left/right alt key without intefering with the other.
71947563709 Shortcut: fixed single mod-key Shortcut from working e.g. Shortcut(ImGuiKey_LeftCtrl)
f1960b60c1a Added "nop" to IM_DEBUG_BREAK macro on GCC to work around GDB bug (#7266)
8491cf36adb Inputs: g.ActiveIdUsingManyKeys[] prevent routes from being claimed.
9176eedf240 Internals: SetShortcutRouting() move code so next commit is easier to read. Should be no-op.
1509842107d Backends: OpenGL3: Shallow tweak of compile-time extensions detection.
1ce41f6218d Backends: OpenGL3: Backup and restore GL_PIXEL_UNPACK_BUFFER. (#7253)
81e0be856a6 Fixed strict-aliasing violation in FormatTextureIDForDebugDisplay(). (#7090, #7256)
a201af73544 Added SetNextItemShortcut() wip function. (#456)
4c2c09450a6 Nav: keyboard/gamepad activation feedback properly timed instead of frame buffer. (#456)
5b5e9bd0cb3 Internals: Tweak shallow compaction as Clang complains about MS ABI signage of enums.
7c3fa7d049a Refactor: moved section in imgui_internal.h
9266c0d2d13 Backends: WebGPU: Avoid leaking pipeline layout. (#7245)
595eb86624d Changelog, comment, minor data compaction
6850194f60a CI: Fixes WGPU example build.
5fc0a361b24 Backends: WebGPU: added ImGui_ImplWGPU_InitInfo::PipelineMultisampleState. (#7240)
831d42c1ab3 Backends: WebGPU: ImGui_ImplWGPU_Init() now takes a ImGui_ImplWGPU_InitInfo structure instead of variety of parameters, allowing for easier further changes. (#7240)
e3c7ff944d5 Examples: Emscripten+WebGPU: slightly refactor like other Emscripten compatible Desktop examples, as aiming to make this suppot desktop eventually.
15908502ed6 Backends: Vulkan: Define NOMINMAX when VK_USE_PLATFORM_WIN32_KHR is defined. (#7250)
788747f8635 Examples: Emscripten+WebGPU: Remove use of deprecated ObjectBase<...>::Release in favor of ::MoveToCHandle (#7251)
763100b3858 Nav: Fixed pressing Escape while in a child window with _NavFlattened flag. (#7237)
c7edb446caa Shortcut(): always test ownership.
1844f903d55 Nav: space/enter poll check ownership. InputText: declare ownership of Enter key as it doesn't go through Shortcut
5ddfbb80d86 Backends: Vulkan: Fixed vkAcquireNextImageKHR() validation errors in VulkanSDK 1.3.275 by allocating one extra semaphore than in-flight frames. (#7236)
2f483373355 Examples: Vulkan: Rename compile-time defies for the examples to remove misleading IMGUI_ prefixes.
d7c2a0e38f4 Shortcut(): fixed 8323a06 adding _Repeat to all Shortcut() calls.
3b828d3701e Refactor: moving ItemAdd() into a section abote ItemSize(). No logic change (part 2)
ff5f3aa38b5 Refactor: moving ItemAdd() into a section abote ItemSize(). No logic change (part 1)
1a48a634466 Enclosed a few more remaining sections in ifndef IMGUI_DISABLE_DEBUG_TOOLS for completeness.
33fabdf392d Scrollbar() doesn't forcefully mark itself as hovered when held.
d431d85839b Internals: removed obsolete ImPool::GetSize() (last used by implot 0.10, changed in implot 0.11)
f0d1f61fa51 Internals: commented out long-time obsoleted FocusableItemRegister()/FocusableItemUnregister() documentaton-only leftovers. +
095665977f6 Nav: marking NavId as hovered in ButtonBehavior() doesn't check for ActiveId.
d10641b04a3 Nav: keyboard/gamepad activation mark widgets as held to give better visual feedback.
03417cc77d1 Backends: WebGPU: Filling all WGPUDepthStencilState fields explicitly as a recent Dawn update stopped setting default values. (#7232)
5fdcdf7080a Shortcut: ImGuiInputFlags_RouteFocused policy can filter Shortcuts conflicting with character input when an item is active. (#456)
80d5cb1ab1f Comments around ImGuiInputFlags.
1cc0eb4d322 Internals: Rename NavFocusScopePath to NavFocusRoute + fixed a static analyzer warning.
46e5f44ec8c Shortcut()/SetShortcutRouting(): use mixed current window focus scope + ParentWindowForFocusRoute. (#6798, #2637, #456)
e0c8c80adaa Shortcut()/SetShortcutRouting(): focus route testing now use ParentWindowForFocusRoute. Automatically set on child-window, manually configurable otherwise. (#6798, #2637, #456)
4b20a0217eb Internals: add window to FocusScopeStack. (#6798)
2156db7a075 Debug Log: added InputRouting logging. Made GetKeyChordName() use its own buffer. Fixed debug break in SetShortcutRouting(). (#6798, #2637, #456)
dd0efdc6371 Fixed SetKeyboardFocusHere() not working when current nav focus is in different scope. (#7226)
8a3dfda8d08 Commented out obsolete ImGuiIO::ImeWindowHandle marked obsolete in 1.87, favor of writing to 'void* ImGuiViewport::PlatformHandleRaw'.
6228c2e1ec7 Backends: Vulkan: moved ImGui_ImplVulkanH_DestroyFrameRenderBuffers/ImGui_ImplVulkanH_DestroyWindowRenderBuffers as they are always used in a state where backend data is available.
70bb6d1e790 Backends: Vulkan: Fixed vkMapMemory() calls unnecessarily using full buffer size. (#3957)
82df7c8bf41 Backends: Vulkan: Fixed handling of ImGui_ImplVulkan_InitInfo::MinAllocationSize field. (#7189, #4238)
29809d72202 Version 1.90.2 WIP
db049db8608 Docs: tweak, fixed misplaced changelog entry. (#7084)

git-subtree-dir: external/imgui/imgui
git-subtree-split: b475309fa1e9d7a91825a169e243f9c4fa085f71
2024-04-15 18:19:01 +02:00

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// dear imgui, v1.90.6 WIP
// (drawing and font code)
/*
Index of this file:
// [SECTION] STB libraries implementation
// [SECTION] Style functions
// [SECTION] ImDrawList
// [SECTION] ImTriangulator, ImDrawList concave polygon fill
// [SECTION] ImDrawListSplitter
// [SECTION] ImDrawData
// [SECTION] Helpers ShadeVertsXXX functions
// [SECTION] ImFontConfig
// [SECTION] ImFontAtlas
// [SECTION] ImFontAtlas glyph ranges helpers
// [SECTION] ImFontGlyphRangesBuilder
// [SECTION] ImFont
// [SECTION] ImGui Internal Render Helpers
// [SECTION] Decompression code
// [SECTION] Default font data (ProggyClean.ttf)
*/
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS
#endif
#ifndef IMGUI_DEFINE_MATH_OPERATORS
#define IMGUI_DEFINE_MATH_OPERATORS
#endif
#include "imgui.h"
#ifndef IMGUI_DISABLE
#include "imgui_internal.h"
#ifdef IMGUI_ENABLE_FREETYPE
#include "misc/freetype/imgui_freetype.h"
#endif
#include <stdio.h> // vsnprintf, sscanf, printf
// Visual Studio warnings
#ifdef _MSC_VER
#pragma warning (disable: 4127) // condition expression is constant
#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
#pragma warning (disable: 26451) // [Static Analyzer] Arithmetic overflow : Using operator 'xxx' on a 4 byte value and then casting the result to a 8 byte value. Cast the value to the wider type before calling operator 'xxx' to avoid overflow(io.2).
#pragma warning (disable: 26812) // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3). [MSVC Static Analyzer)
#endif
// Clang/GCC warnings with -Weverything
#if defined(__clang__)
#if __has_warning("-Wunknown-warning-option")
#pragma clang diagnostic ignored "-Wunknown-warning-option" // warning: unknown warning group 'xxx' // not all warnings are known by all Clang versions and they tend to be rename-happy.. so ignoring warnings triggers new warnings on some configuration. Great!
#endif
#pragma clang diagnostic ignored "-Wunknown-pragmas" // warning: unknown warning group 'xxx'
#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast // yes, they are more terse.
#pragma clang diagnostic ignored "-Wfloat-equal" // warning: comparing floating point with == or != is unsafe // storing and comparing against same constants ok.
#pragma clang diagnostic ignored "-Wglobal-constructors" // warning: declaration requires a global destructor // similar to above, not sure what the exact difference is.
#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant" // warning: zero as null pointer constant // some standard header variations use #define NULL 0
#pragma clang diagnostic ignored "-Wcomma" // warning: possible misuse of comma operator here
#pragma clang diagnostic ignored "-Wreserved-id-macro" // warning: macro name is a reserved identifier
#pragma clang diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function // using printf() is a misery with this as C++ va_arg ellipsis changes float to double.
#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision
#pragma clang diagnostic ignored "-Wreserved-identifier" // warning: identifier '_Xxx' is reserved because it starts with '_' followed by a capital letter
#pragma clang diagnostic ignored "-Wunsafe-buffer-usage" // warning: 'xxx' is an unsafe pointer used for buffer access
#elif defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
#pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used
#pragma GCC diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function
#pragma GCC diagnostic ignored "-Wconversion" // warning: conversion to 'xxxx' from 'xxxx' may alter its value
#pragma GCC diagnostic ignored "-Wstack-protector" // warning: stack protector not protecting local variables: variable length buffer
#pragma GCC diagnostic ignored "-Wclass-memaccess" // [__GNUC__ >= 8] warning: 'memset/memcpy' clearing/writing an object of type 'xxxx' with no trivial copy-assignment; use assignment or value-initialization instead
#endif
//-------------------------------------------------------------------------
// [SECTION] STB libraries implementation (for stb_truetype and stb_rect_pack)
//-------------------------------------------------------------------------
// Compile time options:
//#define IMGUI_STB_NAMESPACE ImStb
//#define IMGUI_STB_TRUETYPE_FILENAME "my_folder/stb_truetype.h"
//#define IMGUI_STB_RECT_PACK_FILENAME "my_folder/stb_rect_pack.h"
//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
#ifdef IMGUI_STB_NAMESPACE
namespace IMGUI_STB_NAMESPACE
{
#endif
#ifdef _MSC_VER
#pragma warning (push)
#pragma warning (disable: 4456) // declaration of 'xx' hides previous local declaration
#pragma warning (disable: 6011) // (stb_rectpack) Dereferencing NULL pointer 'cur->next'.
#pragma warning (disable: 6385) // (stb_truetype) Reading invalid data from 'buffer': the readable size is '_Old_3`kernel_width' bytes, but '3' bytes may be read.
#pragma warning (disable: 28182) // (stb_rectpack) Dereferencing NULL pointer. 'cur' contains the same NULL value as 'cur->next' did.
#endif
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-function"
#pragma clang diagnostic ignored "-Wmissing-prototypes"
#pragma clang diagnostic ignored "-Wimplicit-fallthrough"
#pragma clang diagnostic ignored "-Wcast-qual" // warning: cast from 'const xxxx *' to 'xxx *' drops const qualifier
#endif
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wtype-limits" // warning: comparison is always true due to limited range of data type [-Wtype-limits]
#pragma GCC diagnostic ignored "-Wcast-qual" // warning: cast from type 'const xxxx *' to type 'xxxx *' casts away qualifiers
#endif
#ifndef STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in another compilation unit
#define STBRP_STATIC
#define STBRP_ASSERT(x) do { IM_ASSERT(x); } while (0)
#define STBRP_SORT ImQsort
#define STB_RECT_PACK_IMPLEMENTATION
#endif
#ifdef IMGUI_STB_RECT_PACK_FILENAME
#include IMGUI_STB_RECT_PACK_FILENAME
#else
#include "imstb_rectpack.h"
#endif
#endif
#ifdef IMGUI_ENABLE_STB_TRUETYPE
#ifndef STB_TRUETYPE_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
#ifndef IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION // in case the user already have an implementation in another compilation unit
#define STBTT_malloc(x,u) ((void)(u), IM_ALLOC(x))
#define STBTT_free(x,u) ((void)(u), IM_FREE(x))
#define STBTT_assert(x) do { IM_ASSERT(x); } while(0)
#define STBTT_fmod(x,y) ImFmod(x,y)
#define STBTT_sqrt(x) ImSqrt(x)
#define STBTT_pow(x,y) ImPow(x,y)
#define STBTT_fabs(x) ImFabs(x)
#define STBTT_ifloor(x) ((int)ImFloor(x))
#define STBTT_iceil(x) ((int)ImCeil(x))
#define STBTT_STATIC
#define STB_TRUETYPE_IMPLEMENTATION
#else
#define STBTT_DEF extern
#endif
#ifdef IMGUI_STB_TRUETYPE_FILENAME
#include IMGUI_STB_TRUETYPE_FILENAME
#else
#include "imstb_truetype.h"
#endif
#endif
#endif // IMGUI_ENABLE_STB_TRUETYPE
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
#if defined(_MSC_VER)
#pragma warning (pop)
#endif
#ifdef IMGUI_STB_NAMESPACE
} // namespace ImStb
using namespace IMGUI_STB_NAMESPACE;
#endif
//-----------------------------------------------------------------------------
// [SECTION] Style functions
//-----------------------------------------------------------------------------
void ImGui::StyleColorsDark(ImGuiStyle* dst)
{
ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
ImVec4* colors = style->Colors;
colors[ImGuiCol_Text] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
colors[ImGuiCol_TextDisabled] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
colors[ImGuiCol_WindowBg] = ImVec4(0.06f, 0.06f, 0.06f, 0.94f);
colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_PopupBg] = ImVec4(0.08f, 0.08f, 0.08f, 0.94f);
colors[ImGuiCol_Border] = ImVec4(0.43f, 0.43f, 0.50f, 0.50f);
colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_FrameBg] = ImVec4(0.16f, 0.29f, 0.48f, 0.54f);
colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[ImGuiCol_TitleBg] = ImVec4(0.04f, 0.04f, 0.04f, 1.00f);
colors[ImGuiCol_TitleBgActive] = ImVec4(0.16f, 0.29f, 0.48f, 1.00f);
colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.00f, 0.00f, 0.00f, 0.51f);
colors[ImGuiCol_MenuBarBg] = ImVec4(0.14f, 0.14f, 0.14f, 1.00f);
colors[ImGuiCol_ScrollbarBg] = ImVec4(0.02f, 0.02f, 0.02f, 0.53f);
colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.31f, 0.31f, 0.31f, 1.00f);
colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.41f, 0.41f, 0.41f, 1.00f);
colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.51f, 0.51f, 0.51f, 1.00f);
colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_SliderGrab] = ImVec4(0.24f, 0.52f, 0.88f, 1.00f);
colors[ImGuiCol_SliderGrabActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_Button] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[ImGuiCol_ButtonHovered] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_ButtonActive] = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);
colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_Separator] = colors[ImGuiCol_Border];
colors[ImGuiCol_SeparatorHovered] = ImVec4(0.10f, 0.40f, 0.75f, 0.78f);
colors[ImGuiCol_SeparatorActive] = ImVec4(0.10f, 0.40f, 0.75f, 1.00f);
colors[ImGuiCol_ResizeGrip] = ImVec4(0.26f, 0.59f, 0.98f, 0.20f);
colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
colors[ImGuiCol_Tab] = ImLerp(colors[ImGuiCol_Header], colors[ImGuiCol_TitleBgActive], 0.80f);
colors[ImGuiCol_TabHovered] = colors[ImGuiCol_HeaderHovered];
colors[ImGuiCol_TabActive] = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
colors[ImGuiCol_TabUnfocused] = ImLerp(colors[ImGuiCol_Tab], colors[ImGuiCol_TitleBg], 0.80f);
colors[ImGuiCol_TabUnfocusedActive] = ImLerp(colors[ImGuiCol_TabActive], colors[ImGuiCol_TitleBg], 0.40f);
colors[ImGuiCol_PlotLines] = ImVec4(0.61f, 0.61f, 0.61f, 1.00f);
colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
colors[ImGuiCol_TableHeaderBg] = ImVec4(0.19f, 0.19f, 0.20f, 1.00f);
colors[ImGuiCol_TableBorderStrong] = ImVec4(0.31f, 0.31f, 0.35f, 1.00f); // Prefer using Alpha=1.0 here
colors[ImGuiCol_TableBorderLight] = ImVec4(0.23f, 0.23f, 0.25f, 1.00f); // Prefer using Alpha=1.0 here
colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_TableRowBgAlt] = ImVec4(1.00f, 1.00f, 1.00f, 0.06f);
colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
colors[ImGuiCol_NavHighlight] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);
colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.20f);
colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.35f);
}
void ImGui::StyleColorsClassic(ImGuiStyle* dst)
{
ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
ImVec4* colors = style->Colors;
colors[ImGuiCol_Text] = ImVec4(0.90f, 0.90f, 0.90f, 1.00f);
colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
colors[ImGuiCol_WindowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.85f);
colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_PopupBg] = ImVec4(0.11f, 0.11f, 0.14f, 0.92f);
colors[ImGuiCol_Border] = ImVec4(0.50f, 0.50f, 0.50f, 0.50f);
colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_FrameBg] = ImVec4(0.43f, 0.43f, 0.43f, 0.39f);
colors[ImGuiCol_FrameBgHovered] = ImVec4(0.47f, 0.47f, 0.69f, 0.40f);
colors[ImGuiCol_FrameBgActive] = ImVec4(0.42f, 0.41f, 0.64f, 0.69f);
colors[ImGuiCol_TitleBg] = ImVec4(0.27f, 0.27f, 0.54f, 0.83f);
colors[ImGuiCol_TitleBgActive] = ImVec4(0.32f, 0.32f, 0.63f, 0.87f);
colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.40f, 0.40f, 0.80f, 0.20f);
colors[ImGuiCol_MenuBarBg] = ImVec4(0.40f, 0.40f, 0.55f, 0.80f);
colors[ImGuiCol_ScrollbarBg] = ImVec4(0.20f, 0.25f, 0.30f, 0.60f);
colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.40f, 0.40f, 0.80f, 0.30f);
colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.40f, 0.40f, 0.80f, 0.40f);
colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);
colors[ImGuiCol_CheckMark] = ImVec4(0.90f, 0.90f, 0.90f, 0.50f);
colors[ImGuiCol_SliderGrab] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f);
colors[ImGuiCol_SliderGrabActive] = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);
colors[ImGuiCol_Button] = ImVec4(0.35f, 0.40f, 0.61f, 0.62f);
colors[ImGuiCol_ButtonHovered] = ImVec4(0.40f, 0.48f, 0.71f, 0.79f);
colors[ImGuiCol_ButtonActive] = ImVec4(0.46f, 0.54f, 0.80f, 1.00f);
colors[ImGuiCol_Header] = ImVec4(0.40f, 0.40f, 0.90f, 0.45f);
colors[ImGuiCol_HeaderHovered] = ImVec4(0.45f, 0.45f, 0.90f, 0.80f);
colors[ImGuiCol_HeaderActive] = ImVec4(0.53f, 0.53f, 0.87f, 0.80f);
colors[ImGuiCol_Separator] = ImVec4(0.50f, 0.50f, 0.50f, 0.60f);
colors[ImGuiCol_SeparatorHovered] = ImVec4(0.60f, 0.60f, 0.70f, 1.00f);
colors[ImGuiCol_SeparatorActive] = ImVec4(0.70f, 0.70f, 0.90f, 1.00f);
colors[ImGuiCol_ResizeGrip] = ImVec4(1.00f, 1.00f, 1.00f, 0.10f);
colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.78f, 0.82f, 1.00f, 0.60f);
colors[ImGuiCol_ResizeGripActive] = ImVec4(0.78f, 0.82f, 1.00f, 0.90f);
colors[ImGuiCol_Tab] = ImLerp(colors[ImGuiCol_Header], colors[ImGuiCol_TitleBgActive], 0.80f);
colors[ImGuiCol_TabHovered] = colors[ImGuiCol_HeaderHovered];
colors[ImGuiCol_TabActive] = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
colors[ImGuiCol_TabUnfocused] = ImLerp(colors[ImGuiCol_Tab], colors[ImGuiCol_TitleBg], 0.80f);
colors[ImGuiCol_TabUnfocusedActive] = ImLerp(colors[ImGuiCol_TabActive], colors[ImGuiCol_TitleBg], 0.40f);
colors[ImGuiCol_PlotLines] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
colors[ImGuiCol_PlotLinesHovered] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
colors[ImGuiCol_TableHeaderBg] = ImVec4(0.27f, 0.27f, 0.38f, 1.00f);
colors[ImGuiCol_TableBorderStrong] = ImVec4(0.31f, 0.31f, 0.45f, 1.00f); // Prefer using Alpha=1.0 here
colors[ImGuiCol_TableBorderLight] = ImVec4(0.26f, 0.26f, 0.28f, 1.00f); // Prefer using Alpha=1.0 here
colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_TableRowBgAlt] = ImVec4(1.00f, 1.00f, 1.00f, 0.07f);
colors[ImGuiCol_TextSelectedBg] = ImVec4(0.00f, 0.00f, 1.00f, 0.35f);
colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
colors[ImGuiCol_NavHighlight] = colors[ImGuiCol_HeaderHovered];
colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);
colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.20f);
colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);
}
// Those light colors are better suited with a thicker font than the default one + FrameBorder
void ImGui::StyleColorsLight(ImGuiStyle* dst)
{
ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
ImVec4* colors = style->Colors;
colors[ImGuiCol_Text] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
colors[ImGuiCol_WindowBg] = ImVec4(0.94f, 0.94f, 0.94f, 1.00f);
colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_PopupBg] = ImVec4(1.00f, 1.00f, 1.00f, 0.98f);
colors[ImGuiCol_Border] = ImVec4(0.00f, 0.00f, 0.00f, 0.30f);
colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_FrameBg] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[ImGuiCol_TitleBg] = ImVec4(0.96f, 0.96f, 0.96f, 1.00f);
colors[ImGuiCol_TitleBgActive] = ImVec4(0.82f, 0.82f, 0.82f, 1.00f);
colors[ImGuiCol_TitleBgCollapsed] = ImVec4(1.00f, 1.00f, 1.00f, 0.51f);
colors[ImGuiCol_MenuBarBg] = ImVec4(0.86f, 0.86f, 0.86f, 1.00f);
colors[ImGuiCol_ScrollbarBg] = ImVec4(0.98f, 0.98f, 0.98f, 0.53f);
colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.69f, 0.69f, 0.69f, 0.80f);
colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.49f, 0.49f, 0.49f, 0.80f);
colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.49f, 0.49f, 0.49f, 1.00f);
colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_SliderGrab] = ImVec4(0.26f, 0.59f, 0.98f, 0.78f);
colors[ImGuiCol_SliderGrabActive] = ImVec4(0.46f, 0.54f, 0.80f, 0.60f);
colors[ImGuiCol_Button] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
colors[ImGuiCol_ButtonHovered] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_ButtonActive] = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);
colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_Separator] = ImVec4(0.39f, 0.39f, 0.39f, 0.62f);
colors[ImGuiCol_SeparatorHovered] = ImVec4(0.14f, 0.44f, 0.80f, 0.78f);
colors[ImGuiCol_SeparatorActive] = ImVec4(0.14f, 0.44f, 0.80f, 1.00f);
colors[ImGuiCol_ResizeGrip] = ImVec4(0.35f, 0.35f, 0.35f, 0.17f);
colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
colors[ImGuiCol_Tab] = ImLerp(colors[ImGuiCol_Header], colors[ImGuiCol_TitleBgActive], 0.90f);
colors[ImGuiCol_TabHovered] = colors[ImGuiCol_HeaderHovered];
colors[ImGuiCol_TabActive] = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
colors[ImGuiCol_TabUnfocused] = ImLerp(colors[ImGuiCol_Tab], colors[ImGuiCol_TitleBg], 0.80f);
colors[ImGuiCol_TabUnfocusedActive] = ImLerp(colors[ImGuiCol_TabActive], colors[ImGuiCol_TitleBg], 0.40f);
colors[ImGuiCol_PlotLines] = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.45f, 0.00f, 1.00f);
colors[ImGuiCol_TableHeaderBg] = ImVec4(0.78f, 0.87f, 0.98f, 1.00f);
colors[ImGuiCol_TableBorderStrong] = ImVec4(0.57f, 0.57f, 0.64f, 1.00f); // Prefer using Alpha=1.0 here
colors[ImGuiCol_TableBorderLight] = ImVec4(0.68f, 0.68f, 0.74f, 1.00f); // Prefer using Alpha=1.0 here
colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_TableRowBgAlt] = ImVec4(0.30f, 0.30f, 0.30f, 0.09f);
colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
colors[ImGuiCol_DragDropTarget] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
colors[ImGuiCol_NavHighlight] = colors[ImGuiCol_HeaderHovered];
colors[ImGuiCol_NavWindowingHighlight] = ImVec4(0.70f, 0.70f, 0.70f, 0.70f);
colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.20f);
colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);
}
//-----------------------------------------------------------------------------
// [SECTION] ImDrawList
//-----------------------------------------------------------------------------
ImDrawListSharedData::ImDrawListSharedData()
{
memset(this, 0, sizeof(*this));
for (int i = 0; i < IM_ARRAYSIZE(ArcFastVtx); i++)
{
const float a = ((float)i * 2 * IM_PI) / (float)IM_ARRAYSIZE(ArcFastVtx);
ArcFastVtx[i] = ImVec2(ImCos(a), ImSin(a));
}
ArcFastRadiusCutoff = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC_R(IM_DRAWLIST_ARCFAST_SAMPLE_MAX, CircleSegmentMaxError);
}
void ImDrawListSharedData::SetCircleTessellationMaxError(float max_error)
{
if (CircleSegmentMaxError == max_error)
return;
IM_ASSERT(max_error > 0.0f);
CircleSegmentMaxError = max_error;
for (int i = 0; i < IM_ARRAYSIZE(CircleSegmentCounts); i++)
{
const float radius = (float)i;
CircleSegmentCounts[i] = (ImU8)((i > 0) ? IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, CircleSegmentMaxError) : IM_DRAWLIST_ARCFAST_SAMPLE_MAX);
}
ArcFastRadiusCutoff = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC_R(IM_DRAWLIST_ARCFAST_SAMPLE_MAX, CircleSegmentMaxError);
}
// Initialize before use in a new frame. We always have a command ready in the buffer.
void ImDrawList::_ResetForNewFrame()
{
// Verify that the ImDrawCmd fields we want to memcmp() are contiguous in memory.
IM_STATIC_ASSERT(offsetof(ImDrawCmd, ClipRect) == 0);
IM_STATIC_ASSERT(offsetof(ImDrawCmd, TextureId) == sizeof(ImVec4));
IM_STATIC_ASSERT(offsetof(ImDrawCmd, VtxOffset) == sizeof(ImVec4) + sizeof(ImTextureID));
if (_Splitter._Count > 1)
_Splitter.Merge(this);
CmdBuffer.resize(0);
IdxBuffer.resize(0);
VtxBuffer.resize(0);
Flags = _Data->InitialFlags;
memset(&_CmdHeader, 0, sizeof(_CmdHeader));
_VtxCurrentIdx = 0;
_VtxWritePtr = NULL;
_IdxWritePtr = NULL;
_ClipRectStack.resize(0);
_TextureIdStack.resize(0);
_Path.resize(0);
_Splitter.Clear();
CmdBuffer.push_back(ImDrawCmd());
_FringeScale = 1.0f;
}
void ImDrawList::_ClearFreeMemory()
{
CmdBuffer.clear();
IdxBuffer.clear();
VtxBuffer.clear();
Flags = ImDrawListFlags_None;
_VtxCurrentIdx = 0;
_VtxWritePtr = NULL;
_IdxWritePtr = NULL;
_ClipRectStack.clear();
_TextureIdStack.clear();
_Path.clear();
_Splitter.ClearFreeMemory();
}
ImDrawList* ImDrawList::CloneOutput() const
{
ImDrawList* dst = IM_NEW(ImDrawList(_Data));
dst->CmdBuffer = CmdBuffer;
dst->IdxBuffer = IdxBuffer;
dst->VtxBuffer = VtxBuffer;
dst->Flags = Flags;
return dst;
}
void ImDrawList::AddDrawCmd()
{
ImDrawCmd draw_cmd;
draw_cmd.ClipRect = _CmdHeader.ClipRect; // Same as calling ImDrawCmd_HeaderCopy()
draw_cmd.TextureId = _CmdHeader.TextureId;
draw_cmd.VtxOffset = _CmdHeader.VtxOffset;
draw_cmd.IdxOffset = IdxBuffer.Size;
IM_ASSERT(draw_cmd.ClipRect.x <= draw_cmd.ClipRect.z && draw_cmd.ClipRect.y <= draw_cmd.ClipRect.w);
CmdBuffer.push_back(draw_cmd);
}
// Pop trailing draw command (used before merging or presenting to user)
// Note that this leaves the ImDrawList in a state unfit for further commands, as most code assume that CmdBuffer.Size > 0 && CmdBuffer.back().UserCallback == NULL
void ImDrawList::_PopUnusedDrawCmd()
{
while (CmdBuffer.Size > 0)
{
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
if (curr_cmd->ElemCount != 0 || curr_cmd->UserCallback != NULL)
return;// break;
CmdBuffer.pop_back();
}
}
void ImDrawList::AddCallback(ImDrawCallback callback, void* callback_data)
{
IM_ASSERT_PARANOID(CmdBuffer.Size > 0);
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
IM_ASSERT(curr_cmd->UserCallback == NULL);
if (curr_cmd->ElemCount != 0)
{
AddDrawCmd();
curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
}
curr_cmd->UserCallback = callback;
curr_cmd->UserCallbackData = callback_data;
AddDrawCmd(); // Force a new command after us (see comment below)
}
// Compare ClipRect, TextureId and VtxOffset with a single memcmp()
#define ImDrawCmd_HeaderSize (offsetof(ImDrawCmd, VtxOffset) + sizeof(unsigned int))
#define ImDrawCmd_HeaderCompare(CMD_LHS, CMD_RHS) (memcmp(CMD_LHS, CMD_RHS, ImDrawCmd_HeaderSize)) // Compare ClipRect, TextureId, VtxOffset
#define ImDrawCmd_HeaderCopy(CMD_DST, CMD_SRC) (memcpy(CMD_DST, CMD_SRC, ImDrawCmd_HeaderSize)) // Copy ClipRect, TextureId, VtxOffset
#define ImDrawCmd_AreSequentialIdxOffset(CMD_0, CMD_1) (CMD_0->IdxOffset + CMD_0->ElemCount == CMD_1->IdxOffset)
// Try to merge two last draw commands
void ImDrawList::_TryMergeDrawCmds()
{
IM_ASSERT_PARANOID(CmdBuffer.Size > 0);
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
ImDrawCmd* prev_cmd = curr_cmd - 1;
if (ImDrawCmd_HeaderCompare(curr_cmd, prev_cmd) == 0 && ImDrawCmd_AreSequentialIdxOffset(prev_cmd, curr_cmd) && curr_cmd->UserCallback == NULL && prev_cmd->UserCallback == NULL)
{
prev_cmd->ElemCount += curr_cmd->ElemCount;
CmdBuffer.pop_back();
}
}
// Our scheme may appears a bit unusual, basically we want the most-common calls AddLine AddRect etc. to not have to perform any check so we always have a command ready in the stack.
// The cost of figuring out if a new command has to be added or if we can merge is paid in those Update** functions only.
void ImDrawList::_OnChangedClipRect()
{
// If current command is used with different settings we need to add a new command
IM_ASSERT_PARANOID(CmdBuffer.Size > 0);
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
if (curr_cmd->ElemCount != 0 && memcmp(&curr_cmd->ClipRect, &_CmdHeader.ClipRect, sizeof(ImVec4)) != 0)
{
AddDrawCmd();
return;
}
IM_ASSERT(curr_cmd->UserCallback == NULL);
// Try to merge with previous command if it matches, else use current command
ImDrawCmd* prev_cmd = curr_cmd - 1;
if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1 && ImDrawCmd_HeaderCompare(&_CmdHeader, prev_cmd) == 0 && ImDrawCmd_AreSequentialIdxOffset(prev_cmd, curr_cmd) && prev_cmd->UserCallback == NULL)
{
CmdBuffer.pop_back();
return;
}
curr_cmd->ClipRect = _CmdHeader.ClipRect;
}
void ImDrawList::_OnChangedTextureID()
{
// If current command is used with different settings we need to add a new command
IM_ASSERT_PARANOID(CmdBuffer.Size > 0);
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
if (curr_cmd->ElemCount != 0 && curr_cmd->TextureId != _CmdHeader.TextureId)
{
AddDrawCmd();
return;
}
IM_ASSERT(curr_cmd->UserCallback == NULL);
// Try to merge with previous command if it matches, else use current command
ImDrawCmd* prev_cmd = curr_cmd - 1;
if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1 && ImDrawCmd_HeaderCompare(&_CmdHeader, prev_cmd) == 0 && ImDrawCmd_AreSequentialIdxOffset(prev_cmd, curr_cmd) && prev_cmd->UserCallback == NULL)
{
CmdBuffer.pop_back();
return;
}
curr_cmd->TextureId = _CmdHeader.TextureId;
}
void ImDrawList::_OnChangedVtxOffset()
{
// We don't need to compare curr_cmd->VtxOffset != _CmdHeader.VtxOffset because we know it'll be different at the time we call this.
_VtxCurrentIdx = 0;
IM_ASSERT_PARANOID(CmdBuffer.Size > 0);
ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
//IM_ASSERT(curr_cmd->VtxOffset != _CmdHeader.VtxOffset); // See #3349
if (curr_cmd->ElemCount != 0)
{
AddDrawCmd();
return;
}
IM_ASSERT(curr_cmd->UserCallback == NULL);
curr_cmd->VtxOffset = _CmdHeader.VtxOffset;
}
int ImDrawList::_CalcCircleAutoSegmentCount(float radius) const
{
// Automatic segment count
const int radius_idx = (int)(radius + 0.999999f); // ceil to never reduce accuracy
if (radius_idx >= 0 && radius_idx < IM_ARRAYSIZE(_Data->CircleSegmentCounts))
return _Data->CircleSegmentCounts[radius_idx]; // Use cached value
else
return IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, _Data->CircleSegmentMaxError);
}
// Render-level scissoring. This is passed down to your render function but not used for CPU-side coarse clipping. Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling)
void ImDrawList::PushClipRect(const ImVec2& cr_min, const ImVec2& cr_max, bool intersect_with_current_clip_rect)
{
ImVec4 cr(cr_min.x, cr_min.y, cr_max.x, cr_max.y);
if (intersect_with_current_clip_rect)
{
ImVec4 current = _CmdHeader.ClipRect;
if (cr.x < current.x) cr.x = current.x;
if (cr.y < current.y) cr.y = current.y;
if (cr.z > current.z) cr.z = current.z;
if (cr.w > current.w) cr.w = current.w;
}
cr.z = ImMax(cr.x, cr.z);
cr.w = ImMax(cr.y, cr.w);
_ClipRectStack.push_back(cr);
_CmdHeader.ClipRect = cr;
_OnChangedClipRect();
}
void ImDrawList::PushClipRectFullScreen()
{
PushClipRect(ImVec2(_Data->ClipRectFullscreen.x, _Data->ClipRectFullscreen.y), ImVec2(_Data->ClipRectFullscreen.z, _Data->ClipRectFullscreen.w));
}
void ImDrawList::PopClipRect()
{
_ClipRectStack.pop_back();
_CmdHeader.ClipRect = (_ClipRectStack.Size == 0) ? _Data->ClipRectFullscreen : _ClipRectStack.Data[_ClipRectStack.Size - 1];
_OnChangedClipRect();
}
void ImDrawList::PushTextureID(ImTextureID texture_id)
{
_TextureIdStack.push_back(texture_id);
_CmdHeader.TextureId = texture_id;
_OnChangedTextureID();
}
void ImDrawList::PopTextureID()
{
_TextureIdStack.pop_back();
_CmdHeader.TextureId = (_TextureIdStack.Size == 0) ? (ImTextureID)NULL : _TextureIdStack.Data[_TextureIdStack.Size - 1];
_OnChangedTextureID();
}
// Reserve space for a number of vertices and indices.
// You must finish filling your reserved data before calling PrimReserve() again, as it may reallocate or
// submit the intermediate results. PrimUnreserve() can be used to release unused allocations.
void ImDrawList::PrimReserve(int idx_count, int vtx_count)
{
// Large mesh support (when enabled)
IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);
if (sizeof(ImDrawIdx) == 2 && (_VtxCurrentIdx + vtx_count >= (1 << 16)) && (Flags & ImDrawListFlags_AllowVtxOffset))
{
// FIXME: In theory we should be testing that vtx_count <64k here.
// In practice, RenderText() relies on reserving ahead for a worst case scenario so it is currently useful for us
// to not make that check until we rework the text functions to handle clipping and large horizontal lines better.
_CmdHeader.VtxOffset = VtxBuffer.Size;
_OnChangedVtxOffset();
}
ImDrawCmd* draw_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
draw_cmd->ElemCount += idx_count;
int vtx_buffer_old_size = VtxBuffer.Size;
VtxBuffer.resize(vtx_buffer_old_size + vtx_count);
_VtxWritePtr = VtxBuffer.Data + vtx_buffer_old_size;
int idx_buffer_old_size = IdxBuffer.Size;
IdxBuffer.resize(idx_buffer_old_size + idx_count);
_IdxWritePtr = IdxBuffer.Data + idx_buffer_old_size;
}
// Release the number of reserved vertices/indices from the end of the last reservation made with PrimReserve().
void ImDrawList::PrimUnreserve(int idx_count, int vtx_count)
{
IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);
ImDrawCmd* draw_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
draw_cmd->ElemCount -= idx_count;
VtxBuffer.shrink(VtxBuffer.Size - vtx_count);
IdxBuffer.shrink(IdxBuffer.Size - idx_count);
}
// Fully unrolled with inline call to keep our debug builds decently fast.
void ImDrawList::PrimRect(const ImVec2& a, const ImVec2& c, ImU32 col)
{
ImVec2 b(c.x, a.y), d(a.x, c.y), uv(_Data->TexUvWhitePixel);
ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
_IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);
_IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);
_VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col;
_VtxWritePtr += 4;
_VtxCurrentIdx += 4;
_IdxWritePtr += 6;
}
void ImDrawList::PrimRectUV(const ImVec2& a, const ImVec2& c, const ImVec2& uv_a, const ImVec2& uv_c, ImU32 col)
{
ImVec2 b(c.x, a.y), d(a.x, c.y), uv_b(uv_c.x, uv_a.y), uv_d(uv_a.x, uv_c.y);
ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
_IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);
_IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);
_VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col;
_VtxWritePtr += 4;
_VtxCurrentIdx += 4;
_IdxWritePtr += 6;
}
void ImDrawList::PrimQuadUV(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uv_a, const ImVec2& uv_b, const ImVec2& uv_c, const ImVec2& uv_d, ImU32 col)
{
ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
_IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);
_IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);
_VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col;
_VtxWritePtr += 4;
_VtxCurrentIdx += 4;
_IdxWritePtr += 6;
}
// On AddPolyline() and AddConvexPolyFilled() we intentionally avoid using ImVec2 and superfluous function calls to optimize debug/non-inlined builds.
// - Those macros expects l-values and need to be used as their own statement.
// - Those macros are intentionally not surrounded by the 'do {} while (0)' idiom because even that translates to runtime with debug compilers.
#define IM_NORMALIZE2F_OVER_ZERO(VX,VY) { float d2 = VX*VX + VY*VY; if (d2 > 0.0f) { float inv_len = ImRsqrt(d2); VX *= inv_len; VY *= inv_len; } } (void)0
#define IM_FIXNORMAL2F_MAX_INVLEN2 100.0f // 500.0f (see #4053, #3366)
#define IM_FIXNORMAL2F(VX,VY) { float d2 = VX*VX + VY*VY; if (d2 > 0.000001f) { float inv_len2 = 1.0f / d2; if (inv_len2 > IM_FIXNORMAL2F_MAX_INVLEN2) inv_len2 = IM_FIXNORMAL2F_MAX_INVLEN2; VX *= inv_len2; VY *= inv_len2; } } (void)0
// TODO: Thickness anti-aliased lines cap are missing their AA fringe.
// We avoid using the ImVec2 math operators here to reduce cost to a minimum for debug/non-inlined builds.
void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32 col, ImDrawFlags flags, float thickness)
{
if (points_count < 2 || (col & IM_COL32_A_MASK) == 0)
return;
const bool closed = (flags & ImDrawFlags_Closed) != 0;
const ImVec2 opaque_uv = _Data->TexUvWhitePixel;
const int count = closed ? points_count : points_count - 1; // The number of line segments we need to draw
const bool thick_line = (thickness > _FringeScale);
if (Flags & ImDrawListFlags_AntiAliasedLines)
{
// Anti-aliased stroke
const float AA_SIZE = _FringeScale;
const ImU32 col_trans = col & ~IM_COL32_A_MASK;
// Thicknesses <1.0 should behave like thickness 1.0
thickness = ImMax(thickness, 1.0f);
const int integer_thickness = (int)thickness;
const float fractional_thickness = thickness - integer_thickness;
// Do we want to draw this line using a texture?
// - For now, only draw integer-width lines using textures to avoid issues with the way scaling occurs, could be improved.
// - If AA_SIZE is not 1.0f we cannot use the texture path.
const bool use_texture = (Flags & ImDrawListFlags_AntiAliasedLinesUseTex) && (integer_thickness < IM_DRAWLIST_TEX_LINES_WIDTH_MAX) && (fractional_thickness <= 0.00001f) && (AA_SIZE == 1.0f);
// We should never hit this, because NewFrame() doesn't set ImDrawListFlags_AntiAliasedLinesUseTex unless ImFontAtlasFlags_NoBakedLines is off
IM_ASSERT_PARANOID(!use_texture || !(_Data->Font->ContainerAtlas->Flags & ImFontAtlasFlags_NoBakedLines));
const int idx_count = use_texture ? (count * 6) : (thick_line ? count * 18 : count * 12);
const int vtx_count = use_texture ? (points_count * 2) : (thick_line ? points_count * 4 : points_count * 3);
PrimReserve(idx_count, vtx_count);
// Temporary buffer
// The first <points_count> items are normals at each line point, then after that there are either 2 or 4 temp points for each line point
_Data->TempBuffer.reserve_discard(points_count * ((use_texture || !thick_line) ? 3 : 5));
ImVec2* temp_normals = _Data->TempBuffer.Data;
ImVec2* temp_points = temp_normals + points_count;
// Calculate normals (tangents) for each line segment
for (int i1 = 0; i1 < count; i1++)
{
const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1;
float dx = points[i2].x - points[i1].x;
float dy = points[i2].y - points[i1].y;
IM_NORMALIZE2F_OVER_ZERO(dx, dy);
temp_normals[i1].x = dy;
temp_normals[i1].y = -dx;
}
if (!closed)
temp_normals[points_count - 1] = temp_normals[points_count - 2];
// If we are drawing a one-pixel-wide line without a texture, or a textured line of any width, we only need 2 or 3 vertices per point
if (use_texture || !thick_line)
{
// [PATH 1] Texture-based lines (thick or non-thick)
// [PATH 2] Non texture-based lines (non-thick)
// The width of the geometry we need to draw - this is essentially <thickness> pixels for the line itself, plus "one pixel" for AA.
// - In the texture-based path, we don't use AA_SIZE here because the +1 is tied to the generated texture
// (see ImFontAtlasBuildRenderLinesTexData() function), and so alternate values won't work without changes to that code.
// - In the non texture-based paths, we would allow AA_SIZE to potentially be != 1.0f with a patch (e.g. fringe_scale patch to
// allow scaling geometry while preserving one-screen-pixel AA fringe).
const float half_draw_size = use_texture ? ((thickness * 0.5f) + 1) : AA_SIZE;
// If line is not closed, the first and last points need to be generated differently as there are no normals to blend
if (!closed)
{
temp_points[0] = points[0] + temp_normals[0] * half_draw_size;
temp_points[1] = points[0] - temp_normals[0] * half_draw_size;
temp_points[(points_count-1)*2+0] = points[points_count-1] + temp_normals[points_count-1] * half_draw_size;
temp_points[(points_count-1)*2+1] = points[points_count-1] - temp_normals[points_count-1] * half_draw_size;
}
// Generate the indices to form a number of triangles for each line segment, and the vertices for the line edges
// This takes points n and n+1 and writes into n+1, with the first point in a closed line being generated from the final one (as n+1 wraps)
// FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.
unsigned int idx1 = _VtxCurrentIdx; // Vertex index for start of line segment
for (int i1 = 0; i1 < count; i1++) // i1 is the first point of the line segment
{
const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1; // i2 is the second point of the line segment
const unsigned int idx2 = ((i1 + 1) == points_count) ? _VtxCurrentIdx : (idx1 + (use_texture ? 2 : 3)); // Vertex index for end of segment
// Average normals
float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f;
float dm_y = (temp_normals[i1].y + temp_normals[i2].y) * 0.5f;
IM_FIXNORMAL2F(dm_x, dm_y);
dm_x *= half_draw_size; // dm_x, dm_y are offset to the outer edge of the AA area
dm_y *= half_draw_size;
// Add temporary vertexes for the outer edges
ImVec2* out_vtx = &temp_points[i2 * 2];
out_vtx[0].x = points[i2].x + dm_x;
out_vtx[0].y = points[i2].y + dm_y;
out_vtx[1].x = points[i2].x - dm_x;
out_vtx[1].y = points[i2].y - dm_y;
if (use_texture)
{
// Add indices for two triangles
_IdxWritePtr[0] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 1); // Right tri
_IdxWritePtr[3] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[4] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 0); // Left tri
_IdxWritePtr += 6;
}
else
{
// Add indexes for four triangles
_IdxWritePtr[0] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 2); // Right tri 1
_IdxWritePtr[3] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[4] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 0); // Right tri 2
_IdxWritePtr[6] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[7] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[8] = (ImDrawIdx)(idx1 + 0); // Left tri 1
_IdxWritePtr[9] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[10] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[11] = (ImDrawIdx)(idx2 + 1); // Left tri 2
_IdxWritePtr += 12;
}
idx1 = idx2;
}
// Add vertexes for each point on the line
if (use_texture)
{
// If we're using textures we only need to emit the left/right edge vertices
ImVec4 tex_uvs = _Data->TexUvLines[integer_thickness];
/*if (fractional_thickness != 0.0f) // Currently always zero when use_texture==false!
{
const ImVec4 tex_uvs_1 = _Data->TexUvLines[integer_thickness + 1];
tex_uvs.x = tex_uvs.x + (tex_uvs_1.x - tex_uvs.x) * fractional_thickness; // inlined ImLerp()
tex_uvs.y = tex_uvs.y + (tex_uvs_1.y - tex_uvs.y) * fractional_thickness;
tex_uvs.z = tex_uvs.z + (tex_uvs_1.z - tex_uvs.z) * fractional_thickness;
tex_uvs.w = tex_uvs.w + (tex_uvs_1.w - tex_uvs.w) * fractional_thickness;
}*/
ImVec2 tex_uv0(tex_uvs.x, tex_uvs.y);
ImVec2 tex_uv1(tex_uvs.z, tex_uvs.w);
for (int i = 0; i < points_count; i++)
{
_VtxWritePtr[0].pos = temp_points[i * 2 + 0]; _VtxWritePtr[0].uv = tex_uv0; _VtxWritePtr[0].col = col; // Left-side outer edge
_VtxWritePtr[1].pos = temp_points[i * 2 + 1]; _VtxWritePtr[1].uv = tex_uv1; _VtxWritePtr[1].col = col; // Right-side outer edge
_VtxWritePtr += 2;
}
}
else
{
// If we're not using a texture, we need the center vertex as well
for (int i = 0; i < points_count; i++)
{
_VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col; // Center of line
_VtxWritePtr[1].pos = temp_points[i * 2 + 0]; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col_trans; // Left-side outer edge
_VtxWritePtr[2].pos = temp_points[i * 2 + 1]; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col_trans; // Right-side outer edge
_VtxWritePtr += 3;
}
}
}
else
{
// [PATH 2] Non texture-based lines (thick): we need to draw the solid line core and thus require four vertices per point
const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f;
// If line is not closed, the first and last points need to be generated differently as there are no normals to blend
if (!closed)
{
const int points_last = points_count - 1;
temp_points[0] = points[0] + temp_normals[0] * (half_inner_thickness + AA_SIZE);
temp_points[1] = points[0] + temp_normals[0] * (half_inner_thickness);
temp_points[2] = points[0] - temp_normals[0] * (half_inner_thickness);
temp_points[3] = points[0] - temp_normals[0] * (half_inner_thickness + AA_SIZE);
temp_points[points_last * 4 + 0] = points[points_last] + temp_normals[points_last] * (half_inner_thickness + AA_SIZE);
temp_points[points_last * 4 + 1] = points[points_last] + temp_normals[points_last] * (half_inner_thickness);
temp_points[points_last * 4 + 2] = points[points_last] - temp_normals[points_last] * (half_inner_thickness);
temp_points[points_last * 4 + 3] = points[points_last] - temp_normals[points_last] * (half_inner_thickness + AA_SIZE);
}
// Generate the indices to form a number of triangles for each line segment, and the vertices for the line edges
// This takes points n and n+1 and writes into n+1, with the first point in a closed line being generated from the final one (as n+1 wraps)
// FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.
unsigned int idx1 = _VtxCurrentIdx; // Vertex index for start of line segment
for (int i1 = 0; i1 < count; i1++) // i1 is the first point of the line segment
{
const int i2 = (i1 + 1) == points_count ? 0 : (i1 + 1); // i2 is the second point of the line segment
const unsigned int idx2 = (i1 + 1) == points_count ? _VtxCurrentIdx : (idx1 + 4); // Vertex index for end of segment
// Average normals
float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f;
float dm_y = (temp_normals[i1].y + temp_normals[i2].y) * 0.5f;
IM_FIXNORMAL2F(dm_x, dm_y);
float dm_out_x = dm_x * (half_inner_thickness + AA_SIZE);
float dm_out_y = dm_y * (half_inner_thickness + AA_SIZE);
float dm_in_x = dm_x * half_inner_thickness;
float dm_in_y = dm_y * half_inner_thickness;
// Add temporary vertices
ImVec2* out_vtx = &temp_points[i2 * 4];
out_vtx[0].x = points[i2].x + dm_out_x;
out_vtx[0].y = points[i2].y + dm_out_y;
out_vtx[1].x = points[i2].x + dm_in_x;
out_vtx[1].y = points[i2].y + dm_in_y;
out_vtx[2].x = points[i2].x - dm_in_x;
out_vtx[2].y = points[i2].y - dm_in_y;
out_vtx[3].x = points[i2].x - dm_out_x;
out_vtx[3].y = points[i2].y - dm_out_y;
// Add indexes
_IdxWritePtr[0] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 2);
_IdxWritePtr[3] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[4] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr[6] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[7] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[8] = (ImDrawIdx)(idx1 + 0);
_IdxWritePtr[9] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[10] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[11] = (ImDrawIdx)(idx2 + 1);
_IdxWritePtr[12] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[13] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[14] = (ImDrawIdx)(idx1 + 3);
_IdxWritePtr[15] = (ImDrawIdx)(idx1 + 3); _IdxWritePtr[16] = (ImDrawIdx)(idx2 + 3); _IdxWritePtr[17] = (ImDrawIdx)(idx2 + 2);
_IdxWritePtr += 18;
idx1 = idx2;
}
// Add vertices
for (int i = 0; i < points_count; i++)
{
_VtxWritePtr[0].pos = temp_points[i * 4 + 0]; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col_trans;
_VtxWritePtr[1].pos = temp_points[i * 4 + 1]; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos = temp_points[i * 4 + 2]; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos = temp_points[i * 4 + 3]; _VtxWritePtr[3].uv = opaque_uv; _VtxWritePtr[3].col = col_trans;
_VtxWritePtr += 4;
}
}
_VtxCurrentIdx += (ImDrawIdx)vtx_count;
}
else
{
// [PATH 4] Non texture-based, Non anti-aliased lines
const int idx_count = count * 6;
const int vtx_count = count * 4; // FIXME-OPT: Not sharing edges
PrimReserve(idx_count, vtx_count);
for (int i1 = 0; i1 < count; i1++)
{
const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1;
const ImVec2& p1 = points[i1];
const ImVec2& p2 = points[i2];
float dx = p2.x - p1.x;
float dy = p2.y - p1.y;
IM_NORMALIZE2F_OVER_ZERO(dx, dy);
dx *= (thickness * 0.5f);
dy *= (thickness * 0.5f);
_VtxWritePtr[0].pos.x = p1.x + dy; _VtxWritePtr[0].pos.y = p1.y - dx; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col;
_VtxWritePtr[1].pos.x = p2.x + dy; _VtxWritePtr[1].pos.y = p2.y - dx; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col;
_VtxWritePtr[2].pos.x = p2.x - dy; _VtxWritePtr[2].pos.y = p2.y + dx; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col;
_VtxWritePtr[3].pos.x = p1.x - dy; _VtxWritePtr[3].pos.y = p1.y + dx; _VtxWritePtr[3].uv = opaque_uv; _VtxWritePtr[3].col = col;
_VtxWritePtr += 4;
_IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + 1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + 2);
_IdxWritePtr[3] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[4] = (ImDrawIdx)(_VtxCurrentIdx + 2); _IdxWritePtr[5] = (ImDrawIdx)(_VtxCurrentIdx + 3);
_IdxWritePtr += 6;
_VtxCurrentIdx += 4;
}
}
}
// - We intentionally avoid using ImVec2 and its math operators here to reduce cost to a minimum for debug/non-inlined builds.
// - Filled shapes must always use clockwise winding order. The anti-aliasing fringe depends on it. Counter-clockwise shapes will have "inward" anti-aliasing.
void ImDrawList::AddConvexPolyFilled(const ImVec2* points, const int points_count, ImU32 col)
{
if (points_count < 3 || (col & IM_COL32_A_MASK) == 0)
return;
const ImVec2 uv = _Data->TexUvWhitePixel;
if (Flags & ImDrawListFlags_AntiAliasedFill)
{
// Anti-aliased Fill
const float AA_SIZE = _FringeScale;
const ImU32 col_trans = col & ~IM_COL32_A_MASK;
const int idx_count = (points_count - 2)*3 + points_count * 6;
const int vtx_count = (points_count * 2);
PrimReserve(idx_count, vtx_count);
// Add indexes for fill
unsigned int vtx_inner_idx = _VtxCurrentIdx;
unsigned int vtx_outer_idx = _VtxCurrentIdx + 1;
for (int i = 2; i < points_count; i++)
{
_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + ((i - 1) << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_inner_idx + (i << 1));
_IdxWritePtr += 3;
}
// Compute normals
_Data->TempBuffer.reserve_discard(points_count);
ImVec2* temp_normals = _Data->TempBuffer.Data;
for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)
{
const ImVec2& p0 = points[i0];
const ImVec2& p1 = points[i1];
float dx = p1.x - p0.x;
float dy = p1.y - p0.y;
IM_NORMALIZE2F_OVER_ZERO(dx, dy);
temp_normals[i0].x = dy;
temp_normals[i0].y = -dx;
}
for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)
{
// Average normals
const ImVec2& n0 = temp_normals[i0];
const ImVec2& n1 = temp_normals[i1];
float dm_x = (n0.x + n1.x) * 0.5f;
float dm_y = (n0.y + n1.y) * 0.5f;
IM_FIXNORMAL2F(dm_x, dm_y);
dm_x *= AA_SIZE * 0.5f;
dm_y *= AA_SIZE * 0.5f;
// Add vertices
_VtxWritePtr[0].pos.x = (points[i1].x - dm_x); _VtxWritePtr[0].pos.y = (points[i1].y - dm_y); _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; // Inner
_VtxWritePtr[1].pos.x = (points[i1].x + dm_x); _VtxWritePtr[1].pos.y = (points[i1].y + dm_y); _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans; // Outer
_VtxWritePtr += 2;
// Add indexes for fringes
_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (i0 << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1));
_IdxWritePtr[3] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1)); _IdxWritePtr[4] = (ImDrawIdx)(vtx_outer_idx + (i1 << 1)); _IdxWritePtr[5] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1));
_IdxWritePtr += 6;
}
_VtxCurrentIdx += (ImDrawIdx)vtx_count;
}
else
{
// Non Anti-aliased Fill
const int idx_count = (points_count - 2)*3;
const int vtx_count = points_count;
PrimReserve(idx_count, vtx_count);
for (int i = 0; i < vtx_count; i++)
{
_VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
_VtxWritePtr++;
}
for (int i = 2; i < points_count; i++)
{
_IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + i - 1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + i);
_IdxWritePtr += 3;
}
_VtxCurrentIdx += (ImDrawIdx)vtx_count;
}
}
void ImDrawList::_PathArcToFastEx(const ImVec2& center, float radius, int a_min_sample, int a_max_sample, int a_step)
{
if (radius < 0.5f)
{
_Path.push_back(center);
return;
}
// Calculate arc auto segment step size
if (a_step <= 0)
a_step = IM_DRAWLIST_ARCFAST_SAMPLE_MAX / _CalcCircleAutoSegmentCount(radius);
// Make sure we never do steps larger than one quarter of the circle
a_step = ImClamp(a_step, 1, IM_DRAWLIST_ARCFAST_TABLE_SIZE / 4);
const int sample_range = ImAbs(a_max_sample - a_min_sample);
const int a_next_step = a_step;
int samples = sample_range + 1;
bool extra_max_sample = false;
if (a_step > 1)
{
samples = sample_range / a_step + 1;
const int overstep = sample_range % a_step;
if (overstep > 0)
{
extra_max_sample = true;
samples++;
// When we have overstep to avoid awkwardly looking one long line and one tiny one at the end,
// distribute first step range evenly between them by reducing first step size.
if (sample_range > 0)
a_step -= (a_step - overstep) / 2;
}
}
_Path.resize(_Path.Size + samples);
ImVec2* out_ptr = _Path.Data + (_Path.Size - samples);
int sample_index = a_min_sample;
if (sample_index < 0 || sample_index >= IM_DRAWLIST_ARCFAST_SAMPLE_MAX)
{
sample_index = sample_index % IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
if (sample_index < 0)
sample_index += IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
}
if (a_max_sample >= a_min_sample)
{
for (int a = a_min_sample; a <= a_max_sample; a += a_step, sample_index += a_step, a_step = a_next_step)
{
// a_step is clamped to IM_DRAWLIST_ARCFAST_SAMPLE_MAX, so we have guaranteed that it will not wrap over range twice or more
if (sample_index >= IM_DRAWLIST_ARCFAST_SAMPLE_MAX)
sample_index -= IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
const ImVec2 s = _Data->ArcFastVtx[sample_index];
out_ptr->x = center.x + s.x * radius;
out_ptr->y = center.y + s.y * radius;
out_ptr++;
}
}
else
{
for (int a = a_min_sample; a >= a_max_sample; a -= a_step, sample_index -= a_step, a_step = a_next_step)
{
// a_step is clamped to IM_DRAWLIST_ARCFAST_SAMPLE_MAX, so we have guaranteed that it will not wrap over range twice or more
if (sample_index < 0)
sample_index += IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
const ImVec2 s = _Data->ArcFastVtx[sample_index];
out_ptr->x = center.x + s.x * radius;
out_ptr->y = center.y + s.y * radius;
out_ptr++;
}
}
if (extra_max_sample)
{
int normalized_max_sample = a_max_sample % IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
if (normalized_max_sample < 0)
normalized_max_sample += IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
const ImVec2 s = _Data->ArcFastVtx[normalized_max_sample];
out_ptr->x = center.x + s.x * radius;
out_ptr->y = center.y + s.y * radius;
out_ptr++;
}
IM_ASSERT_PARANOID(_Path.Data + _Path.Size == out_ptr);
}
void ImDrawList::_PathArcToN(const ImVec2& center, float radius, float a_min, float a_max, int num_segments)
{
if (radius < 0.5f)
{
_Path.push_back(center);
return;
}
// Note that we are adding a point at both a_min and a_max.
// If you are trying to draw a full closed circle you don't want the overlapping points!
_Path.reserve(_Path.Size + (num_segments + 1));
for (int i = 0; i <= num_segments; i++)
{
const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min);
_Path.push_back(ImVec2(center.x + ImCos(a) * radius, center.y + ImSin(a) * radius));
}
}
// 0: East, 3: South, 6: West, 9: North, 12: East
void ImDrawList::PathArcToFast(const ImVec2& center, float radius, int a_min_of_12, int a_max_of_12)
{
if (radius < 0.5f)
{
_Path.push_back(center);
return;
}
_PathArcToFastEx(center, radius, a_min_of_12 * IM_DRAWLIST_ARCFAST_SAMPLE_MAX / 12, a_max_of_12 * IM_DRAWLIST_ARCFAST_SAMPLE_MAX / 12, 0);
}
void ImDrawList::PathArcTo(const ImVec2& center, float radius, float a_min, float a_max, int num_segments)
{
if (radius < 0.5f)
{
_Path.push_back(center);
return;
}
if (num_segments > 0)
{
_PathArcToN(center, radius, a_min, a_max, num_segments);
return;
}
// Automatic segment count
if (radius <= _Data->ArcFastRadiusCutoff)
{
const bool a_is_reverse = a_max < a_min;
// We are going to use precomputed values for mid samples.
// Determine first and last sample in lookup table that belong to the arc.
const float a_min_sample_f = IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_min / (IM_PI * 2.0f);
const float a_max_sample_f = IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_max / (IM_PI * 2.0f);
const int a_min_sample = a_is_reverse ? (int)ImFloor(a_min_sample_f) : (int)ImCeil(a_min_sample_f);
const int a_max_sample = a_is_reverse ? (int)ImCeil(a_max_sample_f) : (int)ImFloor(a_max_sample_f);
const int a_mid_samples = a_is_reverse ? ImMax(a_min_sample - a_max_sample, 0) : ImMax(a_max_sample - a_min_sample, 0);
const float a_min_segment_angle = a_min_sample * IM_PI * 2.0f / IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
const float a_max_segment_angle = a_max_sample * IM_PI * 2.0f / IM_DRAWLIST_ARCFAST_SAMPLE_MAX;
const bool a_emit_start = ImAbs(a_min_segment_angle - a_min) >= 1e-5f;
const bool a_emit_end = ImAbs(a_max - a_max_segment_angle) >= 1e-5f;
_Path.reserve(_Path.Size + (a_mid_samples + 1 + (a_emit_start ? 1 : 0) + (a_emit_end ? 1 : 0)));
if (a_emit_start)
_Path.push_back(ImVec2(center.x + ImCos(a_min) * radius, center.y + ImSin(a_min) * radius));
if (a_mid_samples > 0)
_PathArcToFastEx(center, radius, a_min_sample, a_max_sample, 0);
if (a_emit_end)
_Path.push_back(ImVec2(center.x + ImCos(a_max) * radius, center.y + ImSin(a_max) * radius));
}
else
{
const float arc_length = ImAbs(a_max - a_min);
const int circle_segment_count = _CalcCircleAutoSegmentCount(radius);
const int arc_segment_count = ImMax((int)ImCeil(circle_segment_count * arc_length / (IM_PI * 2.0f)), (int)(2.0f * IM_PI / arc_length));
_PathArcToN(center, radius, a_min, a_max, arc_segment_count);
}
}
void ImDrawList::PathEllipticalArcTo(const ImVec2& center, const ImVec2& radius, float rot, float a_min, float a_max, int num_segments)
{
if (num_segments <= 0)
num_segments = _CalcCircleAutoSegmentCount(ImMax(radius.x, radius.y)); // A bit pessimistic, maybe there's a better computation to do here.
_Path.reserve(_Path.Size + (num_segments + 1));
const float cos_rot = ImCos(rot);
const float sin_rot = ImSin(rot);
for (int i = 0; i <= num_segments; i++)
{
const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min);
ImVec2 point(ImCos(a) * radius.x, ImSin(a) * radius.y);
const ImVec2 rel((point.x * cos_rot) - (point.y * sin_rot), (point.x * sin_rot) + (point.y * cos_rot));
point.x = rel.x + center.x;
point.y = rel.y + center.y;
_Path.push_back(point);
}
}
ImVec2 ImBezierCubicCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, float t)
{
float u = 1.0f - t;
float w1 = u * u * u;
float w2 = 3 * u * u * t;
float w3 = 3 * u * t * t;
float w4 = t * t * t;
return ImVec2(w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x, w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y);
}
ImVec2 ImBezierQuadraticCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, float t)
{
float u = 1.0f - t;
float w1 = u * u;
float w2 = 2 * u * t;
float w3 = t * t;
return ImVec2(w1 * p1.x + w2 * p2.x + w3 * p3.x, w1 * p1.y + w2 * p2.y + w3 * p3.y);
}
// Closely mimics ImBezierCubicClosestPointCasteljau() in imgui.cpp
static void PathBezierCubicCurveToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level)
{
float dx = x4 - x1;
float dy = y4 - y1;
float d2 = (x2 - x4) * dy - (y2 - y4) * dx;
float d3 = (x3 - x4) * dy - (y3 - y4) * dx;
d2 = (d2 >= 0) ? d2 : -d2;
d3 = (d3 >= 0) ? d3 : -d3;
if ((d2 + d3) * (d2 + d3) < tess_tol * (dx * dx + dy * dy))
{
path->push_back(ImVec2(x4, y4));
}
else if (level < 10)
{
float x12 = (x1 + x2) * 0.5f, y12 = (y1 + y2) * 0.5f;
float x23 = (x2 + x3) * 0.5f, y23 = (y2 + y3) * 0.5f;
float x34 = (x3 + x4) * 0.5f, y34 = (y3 + y4) * 0.5f;
float x123 = (x12 + x23) * 0.5f, y123 = (y12 + y23) * 0.5f;
float x234 = (x23 + x34) * 0.5f, y234 = (y23 + y34) * 0.5f;
float x1234 = (x123 + x234) * 0.5f, y1234 = (y123 + y234) * 0.5f;
PathBezierCubicCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, x1234, y1234, tess_tol, level + 1);
PathBezierCubicCurveToCasteljau(path, x1234, y1234, x234, y234, x34, y34, x4, y4, tess_tol, level + 1);
}
}
static void PathBezierQuadraticCurveToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float tess_tol, int level)
{
float dx = x3 - x1, dy = y3 - y1;
float det = (x2 - x3) * dy - (y2 - y3) * dx;
if (det * det * 4.0f < tess_tol * (dx * dx + dy * dy))
{
path->push_back(ImVec2(x3, y3));
}
else if (level < 10)
{
float x12 = (x1 + x2) * 0.5f, y12 = (y1 + y2) * 0.5f;
float x23 = (x2 + x3) * 0.5f, y23 = (y2 + y3) * 0.5f;
float x123 = (x12 + x23) * 0.5f, y123 = (y12 + y23) * 0.5f;
PathBezierQuadraticCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, tess_tol, level + 1);
PathBezierQuadraticCurveToCasteljau(path, x123, y123, x23, y23, x3, y3, tess_tol, level + 1);
}
}
void ImDrawList::PathBezierCubicCurveTo(const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments)
{
ImVec2 p1 = _Path.back();
if (num_segments == 0)
{
IM_ASSERT(_Data->CurveTessellationTol > 0.0f);
PathBezierCubicCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, _Data->CurveTessellationTol, 0); // Auto-tessellated
}
else
{
float t_step = 1.0f / (float)num_segments;
for (int i_step = 1; i_step <= num_segments; i_step++)
_Path.push_back(ImBezierCubicCalc(p1, p2, p3, p4, t_step * i_step));
}
}
void ImDrawList::PathBezierQuadraticCurveTo(const ImVec2& p2, const ImVec2& p3, int num_segments)
{
ImVec2 p1 = _Path.back();
if (num_segments == 0)
{
IM_ASSERT(_Data->CurveTessellationTol > 0.0f);
PathBezierQuadraticCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, _Data->CurveTessellationTol, 0);// Auto-tessellated
}
else
{
float t_step = 1.0f / (float)num_segments;
for (int i_step = 1; i_step <= num_segments; i_step++)
_Path.push_back(ImBezierQuadraticCalc(p1, p2, p3, t_step * i_step));
}
}
static inline ImDrawFlags FixRectCornerFlags(ImDrawFlags flags)
{
/*
IM_STATIC_ASSERT(ImDrawFlags_RoundCornersTopLeft == (1 << 4));
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
// Obsoleted in 1.82 (from February 2021). This code was stripped/simplified and mostly commented in 1.90 (from September 2023)
// - Legacy Support for hard coded ~0 (used to be a suggested equivalent to ImDrawCornerFlags_All)
if (flags == ~0) { return ImDrawFlags_RoundCornersAll; }
// - Legacy Support for hard coded 0x01 to 0x0F (matching 15 out of 16 old flags combinations). Read details in older version of this code.
if (flags >= 0x01 && flags <= 0x0F) { return (flags << 4); }
// We cannot support hard coded 0x00 with 'float rounding > 0.0f' --> replace with ImDrawFlags_RoundCornersNone or use 'float rounding = 0.0f'
#endif
*/
// If this assert triggers, please update your code replacing hardcoded values with new ImDrawFlags_RoundCorners* values.
// Note that ImDrawFlags_Closed (== 0x01) is an invalid flag for AddRect(), AddRectFilled(), PathRect() etc. anyway.
// See details in 1.82 Changelog as well as 2021/03/12 and 2023/09/08 entries in "API BREAKING CHANGES" section.
IM_ASSERT((flags & 0x0F) == 0 && "Misuse of legacy hardcoded ImDrawCornerFlags values!");
if ((flags & ImDrawFlags_RoundCornersMask_) == 0)
flags |= ImDrawFlags_RoundCornersAll;
return flags;
}
void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, ImDrawFlags flags)
{
if (rounding >= 0.5f)
{
flags = FixRectCornerFlags(flags);
rounding = ImMin(rounding, ImFabs(b.x - a.x) * (((flags & ImDrawFlags_RoundCornersTop) == ImDrawFlags_RoundCornersTop) || ((flags & ImDrawFlags_RoundCornersBottom) == ImDrawFlags_RoundCornersBottom) ? 0.5f : 1.0f) - 1.0f);
rounding = ImMin(rounding, ImFabs(b.y - a.y) * (((flags & ImDrawFlags_RoundCornersLeft) == ImDrawFlags_RoundCornersLeft) || ((flags & ImDrawFlags_RoundCornersRight) == ImDrawFlags_RoundCornersRight) ? 0.5f : 1.0f) - 1.0f);
}
if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
{
PathLineTo(a);
PathLineTo(ImVec2(b.x, a.y));
PathLineTo(b);
PathLineTo(ImVec2(a.x, b.y));
}
else
{
const float rounding_tl = (flags & ImDrawFlags_RoundCornersTopLeft) ? rounding : 0.0f;
const float rounding_tr = (flags & ImDrawFlags_RoundCornersTopRight) ? rounding : 0.0f;
const float rounding_br = (flags & ImDrawFlags_RoundCornersBottomRight) ? rounding : 0.0f;
const float rounding_bl = (flags & ImDrawFlags_RoundCornersBottomLeft) ? rounding : 0.0f;
PathArcToFast(ImVec2(a.x + rounding_tl, a.y + rounding_tl), rounding_tl, 6, 9);
PathArcToFast(ImVec2(b.x - rounding_tr, a.y + rounding_tr), rounding_tr, 9, 12);
PathArcToFast(ImVec2(b.x - rounding_br, b.y - rounding_br), rounding_br, 0, 3);
PathArcToFast(ImVec2(a.x + rounding_bl, b.y - rounding_bl), rounding_bl, 3, 6);
}
}
void ImDrawList::AddLine(const ImVec2& p1, const ImVec2& p2, ImU32 col, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(p1 + ImVec2(0.5f, 0.5f));
PathLineTo(p2 + ImVec2(0.5f, 0.5f));
PathStroke(col, 0, thickness);
}
// p_min = upper-left, p_max = lower-right
// Note we don't render 1 pixels sized rectangles properly.
void ImDrawList::AddRect(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding, ImDrawFlags flags, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
if (Flags & ImDrawListFlags_AntiAliasedLines)
PathRect(p_min + ImVec2(0.50f, 0.50f), p_max - ImVec2(0.50f, 0.50f), rounding, flags);
else
PathRect(p_min + ImVec2(0.50f, 0.50f), p_max - ImVec2(0.49f, 0.49f), rounding, flags); // Better looking lower-right corner and rounded non-AA shapes.
PathStroke(col, ImDrawFlags_Closed, thickness);
}
void ImDrawList::AddRectFilled(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding, ImDrawFlags flags)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
{
PrimReserve(6, 4);
PrimRect(p_min, p_max, col);
}
else
{
PathRect(p_min, p_max, rounding, flags);
PathFillConvex(col);
}
}
// p_min = upper-left, p_max = lower-right
void ImDrawList::AddRectFilledMultiColor(const ImVec2& p_min, const ImVec2& p_max, ImU32 col_upr_left, ImU32 col_upr_right, ImU32 col_bot_right, ImU32 col_bot_left)
{
if (((col_upr_left | col_upr_right | col_bot_right | col_bot_left) & IM_COL32_A_MASK) == 0)
return;
const ImVec2 uv = _Data->TexUvWhitePixel;
PrimReserve(6, 4);
PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 1)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 2));
PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 2)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 3));
PrimWriteVtx(p_min, uv, col_upr_left);
PrimWriteVtx(ImVec2(p_max.x, p_min.y), uv, col_upr_right);
PrimWriteVtx(p_max, uv, col_bot_right);
PrimWriteVtx(ImVec2(p_min.x, p_max.y), uv, col_bot_left);
}
void ImDrawList::AddQuad(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(p1);
PathLineTo(p2);
PathLineTo(p3);
PathLineTo(p4);
PathStroke(col, ImDrawFlags_Closed, thickness);
}
void ImDrawList::AddQuadFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(p1);
PathLineTo(p2);
PathLineTo(p3);
PathLineTo(p4);
PathFillConvex(col);
}
void ImDrawList::AddTriangle(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(p1);
PathLineTo(p2);
PathLineTo(p3);
PathStroke(col, ImDrawFlags_Closed, thickness);
}
void ImDrawList::AddTriangleFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(p1);
PathLineTo(p2);
PathLineTo(p3);
PathFillConvex(col);
}
void ImDrawList::AddCircle(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0 || radius < 0.5f)
return;
if (num_segments <= 0)
{
// Use arc with automatic segment count
_PathArcToFastEx(center, radius - 0.5f, 0, IM_DRAWLIST_ARCFAST_SAMPLE_MAX, 0);
_Path.Size--;
}
else
{
// Explicit segment count (still clamp to avoid drawing insanely tessellated shapes)
num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX);
// Because we are filling a closed shape we remove 1 from the count of segments/points
const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1);
}
PathStroke(col, ImDrawFlags_Closed, thickness);
}
void ImDrawList::AddCircleFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)
{
if ((col & IM_COL32_A_MASK) == 0 || radius < 0.5f)
return;
if (num_segments <= 0)
{
// Use arc with automatic segment count
_PathArcToFastEx(center, radius, 0, IM_DRAWLIST_ARCFAST_SAMPLE_MAX, 0);
_Path.Size--;
}
else
{
// Explicit segment count (still clamp to avoid drawing insanely tessellated shapes)
num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX);
// Because we are filling a closed shape we remove 1 from the count of segments/points
const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
PathArcTo(center, radius, 0.0f, a_max, num_segments - 1);
}
PathFillConvex(col);
}
// Guaranteed to honor 'num_segments'
void ImDrawList::AddNgon(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)
return;
// Because we are filling a closed shape we remove 1 from the count of segments/points
const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1);
PathStroke(col, ImDrawFlags_Closed, thickness);
}
// Guaranteed to honor 'num_segments'
void ImDrawList::AddNgonFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)
{
if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)
return;
// Because we are filling a closed shape we remove 1 from the count of segments/points
const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
PathArcTo(center, radius, 0.0f, a_max, num_segments - 1);
PathFillConvex(col);
}
// Ellipse
void ImDrawList::AddEllipse(const ImVec2& center, const ImVec2& radius, ImU32 col, float rot, int num_segments, float thickness)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
if (num_segments <= 0)
num_segments = _CalcCircleAutoSegmentCount(ImMax(radius.x, radius.y)); // A bit pessimistic, maybe there's a better computation to do here.
// Because we are filling a closed shape we remove 1 from the count of segments/points
const float a_max = IM_PI * 2.0f * ((float)num_segments - 1.0f) / (float)num_segments;
PathEllipticalArcTo(center, radius, rot, 0.0f, a_max, num_segments - 1);
PathStroke(col, true, thickness);
}
void ImDrawList::AddEllipseFilled(const ImVec2& center, const ImVec2& radius, ImU32 col, float rot, int num_segments)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
if (num_segments <= 0)
num_segments = _CalcCircleAutoSegmentCount(ImMax(radius.x, radius.y)); // A bit pessimistic, maybe there's a better computation to do here.
// Because we are filling a closed shape we remove 1 from the count of segments/points
const float a_max = IM_PI * 2.0f * ((float)num_segments - 1.0f) / (float)num_segments;
PathEllipticalArcTo(center, radius, rot, 0.0f, a_max, num_segments - 1);
PathFillConvex(col);
}
// Cubic Bezier takes 4 controls points
void ImDrawList::AddBezierCubic(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col, float thickness, int num_segments)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(p1);
PathBezierCubicCurveTo(p2, p3, p4, num_segments);
PathStroke(col, 0, thickness);
}
// Quadratic Bezier takes 3 controls points
void ImDrawList::AddBezierQuadratic(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col, float thickness, int num_segments)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
PathLineTo(p1);
PathBezierQuadraticCurveTo(p2, p3, num_segments);
PathStroke(col, 0, thickness);
}
void ImDrawList::AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end, float wrap_width, const ImVec4* cpu_fine_clip_rect)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
// Accept null ranges
if (text_begin == text_end || text_begin[0] == 0)
return;
if (text_end == NULL)
text_end = text_begin + strlen(text_begin);
// Pull default font/size from the shared ImDrawListSharedData instance
if (font == NULL)
font = _Data->Font;
if (font_size == 0.0f)
font_size = _Data->FontSize;
IM_ASSERT(font->ContainerAtlas->TexID == _CmdHeader.TextureId); // Use high-level ImGui::PushFont() or low-level ImDrawList::PushTextureId() to change font.
ImVec4 clip_rect = _CmdHeader.ClipRect;
if (cpu_fine_clip_rect)
{
clip_rect.x = ImMax(clip_rect.x, cpu_fine_clip_rect->x);
clip_rect.y = ImMax(clip_rect.y, cpu_fine_clip_rect->y);
clip_rect.z = ImMin(clip_rect.z, cpu_fine_clip_rect->z);
clip_rect.w = ImMin(clip_rect.w, cpu_fine_clip_rect->w);
}
font->RenderText(this, font_size, pos, col, clip_rect, text_begin, text_end, wrap_width, cpu_fine_clip_rect != NULL);
}
void ImDrawList::AddText(const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end)
{
AddText(NULL, 0.0f, pos, col, text_begin, text_end);
}
void ImDrawList::AddImage(ImTextureID user_texture_id, const ImVec2& p_min, const ImVec2& p_max, const ImVec2& uv_min, const ImVec2& uv_max, ImU32 col)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
const bool push_texture_id = user_texture_id != _CmdHeader.TextureId;
if (push_texture_id)
PushTextureID(user_texture_id);
PrimReserve(6, 4);
PrimRectUV(p_min, p_max, uv_min, uv_max, col);
if (push_texture_id)
PopTextureID();
}
void ImDrawList::AddImageQuad(ImTextureID user_texture_id, const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& uv1, const ImVec2& uv2, const ImVec2& uv3, const ImVec2& uv4, ImU32 col)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
const bool push_texture_id = user_texture_id != _CmdHeader.TextureId;
if (push_texture_id)
PushTextureID(user_texture_id);
PrimReserve(6, 4);
PrimQuadUV(p1, p2, p3, p4, uv1, uv2, uv3, uv4, col);
if (push_texture_id)
PopTextureID();
}
void ImDrawList::AddImageRounded(ImTextureID user_texture_id, const ImVec2& p_min, const ImVec2& p_max, const ImVec2& uv_min, const ImVec2& uv_max, ImU32 col, float rounding, ImDrawFlags flags)
{
if ((col & IM_COL32_A_MASK) == 0)
return;
flags = FixRectCornerFlags(flags);
if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
{
AddImage(user_texture_id, p_min, p_max, uv_min, uv_max, col);
return;
}
const bool push_texture_id = user_texture_id != _CmdHeader.TextureId;
if (push_texture_id)
PushTextureID(user_texture_id);
int vert_start_idx = VtxBuffer.Size;
PathRect(p_min, p_max, rounding, flags);
PathFillConvex(col);
int vert_end_idx = VtxBuffer.Size;
ImGui::ShadeVertsLinearUV(this, vert_start_idx, vert_end_idx, p_min, p_max, uv_min, uv_max, true);
if (push_texture_id)
PopTextureID();
}
//-----------------------------------------------------------------------------
// [SECTION] ImTriangulator, ImDrawList concave polygon fill
//-----------------------------------------------------------------------------
// Triangulate concave polygons. Based on "Triangulation by Ear Clipping" paper, O(N^2) complexity.
// Reference: https://www.geometrictools.com/Documentation/TriangulationByEarClipping.pdf
// Provided as a convenience for user but not used by main library.
//-----------------------------------------------------------------------------
// - ImTriangulator [Internal]
// - AddConcavePolyFilled()
//-----------------------------------------------------------------------------
enum ImTriangulatorNodeType
{
ImTriangulatorNodeType_Convex,
ImTriangulatorNodeType_Ear,
ImTriangulatorNodeType_Reflex
};
struct ImTriangulatorNode
{
ImTriangulatorNodeType Type;
int Index;
ImVec2 Pos;
ImTriangulatorNode* Next;
ImTriangulatorNode* Prev;
void Unlink() { Next->Prev = Prev; Prev->Next = Next; }
};
struct ImTriangulatorNodeSpan
{
ImTriangulatorNode** Data = NULL;
int Size = 0;
void push_back(ImTriangulatorNode* node) { Data[Size++] = node; }
void find_erase_unsorted(int idx) { for (int i = Size - 1; i >= 0; i--) if (Data[i]->Index == idx) { Data[i] = Data[Size - 1]; Size--; return; } }
};
struct ImTriangulator
{
static int EstimateTriangleCount(int points_count) { return (points_count < 3) ? 0 : points_count - 2; }
static int EstimateScratchBufferSize(int points_count) { return sizeof(ImTriangulatorNode) * points_count + sizeof(ImTriangulatorNode*) * points_count * 2; }
void Init(const ImVec2* points, int points_count, void* scratch_buffer);
void GetNextTriangle(unsigned int out_triangle[3]); // Return relative indexes for next triangle
// Internal functions
void BuildNodes(const ImVec2* points, int points_count);
void BuildReflexes();
void BuildEars();
void FlipNodeList();
bool IsEar(int i0, int i1, int i2, const ImVec2& v0, const ImVec2& v1, const ImVec2& v2) const;
void ReclassifyNode(ImTriangulatorNode* node);
// Internal members
int _TrianglesLeft = 0;
ImTriangulatorNode* _Nodes = NULL;
ImTriangulatorNodeSpan _Ears;
ImTriangulatorNodeSpan _Reflexes;
};
// Distribute storage for nodes, ears and reflexes.
// FIXME-OPT: if everything is convex, we could report it to caller and let it switch to an convex renderer
// (this would require first building reflexes to bail to convex if empty, without even building nodes)
void ImTriangulator::Init(const ImVec2* points, int points_count, void* scratch_buffer)
{
IM_ASSERT(scratch_buffer != NULL && points_count >= 3);
_TrianglesLeft = EstimateTriangleCount(points_count);
_Nodes = (ImTriangulatorNode*)scratch_buffer; // points_count x Node
_Ears.Data = (ImTriangulatorNode**)(_Nodes + points_count); // points_count x Node*
_Reflexes.Data = (ImTriangulatorNode**)(_Nodes + points_count) + points_count; // points_count x Node*
BuildNodes(points, points_count);
BuildReflexes();
BuildEars();
}
void ImTriangulator::BuildNodes(const ImVec2* points, int points_count)
{
for (int i = 0; i < points_count; i++)
{
_Nodes[i].Type = ImTriangulatorNodeType_Convex;
_Nodes[i].Index = i;
_Nodes[i].Pos = points[i];
_Nodes[i].Next = _Nodes + i + 1;
_Nodes[i].Prev = _Nodes + i - 1;
}
_Nodes[0].Prev = _Nodes + points_count - 1;
_Nodes[points_count - 1].Next = _Nodes;
}
void ImTriangulator::BuildReflexes()
{
ImTriangulatorNode* n1 = _Nodes;
for (int i = _TrianglesLeft; i >= 0; i--, n1 = n1->Next)
{
if (ImTriangleIsClockwise(n1->Prev->Pos, n1->Pos, n1->Next->Pos))
continue;
n1->Type = ImTriangulatorNodeType_Reflex;
_Reflexes.push_back(n1);
}
}
void ImTriangulator::BuildEars()
{
ImTriangulatorNode* n1 = _Nodes;
for (int i = _TrianglesLeft; i >= 0; i--, n1 = n1->Next)
{
if (n1->Type != ImTriangulatorNodeType_Convex)
continue;
if (!IsEar(n1->Prev->Index, n1->Index, n1->Next->Index, n1->Prev->Pos, n1->Pos, n1->Next->Pos))
continue;
n1->Type = ImTriangulatorNodeType_Ear;
_Ears.push_back(n1);
}
}
void ImTriangulator::GetNextTriangle(unsigned int out_triangle[3])
{
if (_Ears.Size == 0)
{
FlipNodeList();
ImTriangulatorNode* node = _Nodes;
for (int i = _TrianglesLeft; i >= 0; i--, node = node->Next)
node->Type = ImTriangulatorNodeType_Convex;
_Reflexes.Size = 0;
BuildReflexes();
BuildEars();
// If we still don't have ears, it means geometry is degenerated.
if (_Ears.Size == 0)
{
// Return first triangle available, mimicking the behavior of convex fill.
IM_ASSERT(_TrianglesLeft > 0); // Geometry is degenerated
_Ears.Data[0] = _Nodes;
_Ears.Size = 1;
}
}
ImTriangulatorNode* ear = _Ears.Data[--_Ears.Size];
out_triangle[0] = ear->Prev->Index;
out_triangle[1] = ear->Index;
out_triangle[2] = ear->Next->Index;
ear->Unlink();
if (ear == _Nodes)
_Nodes = ear->Next;
ReclassifyNode(ear->Prev);
ReclassifyNode(ear->Next);
_TrianglesLeft--;
}
void ImTriangulator::FlipNodeList()
{
ImTriangulatorNode* prev = _Nodes;
ImTriangulatorNode* temp = _Nodes;
ImTriangulatorNode* current = _Nodes->Next;
prev->Next = prev;
prev->Prev = prev;
while (current != _Nodes)
{
temp = current->Next;
current->Next = prev;
prev->Prev = current;
_Nodes->Next = current;
current->Prev = _Nodes;
prev = current;
current = temp;
}
_Nodes = prev;
}
// A triangle is an ear is no other vertex is inside it. We can test reflexes vertices only (see reference algorithm)
bool ImTriangulator::IsEar(int i0, int i1, int i2, const ImVec2& v0, const ImVec2& v1, const ImVec2& v2) const
{
ImTriangulatorNode** p_end = _Reflexes.Data + _Reflexes.Size;
for (ImTriangulatorNode** p = _Reflexes.Data; p < p_end; p++)
{
ImTriangulatorNode* reflex = *p;
if (reflex->Index != i0 && reflex->Index != i1 && reflex->Index != i2)
if (ImTriangleContainsPoint(v0, v1, v2, reflex->Pos))
return false;
}
return true;
}
void ImTriangulator::ReclassifyNode(ImTriangulatorNode* n1)
{
// Classify node
ImTriangulatorNodeType type;
const ImTriangulatorNode* n0 = n1->Prev;
const ImTriangulatorNode* n2 = n1->Next;
if (!ImTriangleIsClockwise(n0->Pos, n1->Pos, n2->Pos))
type = ImTriangulatorNodeType_Reflex;
else if (IsEar(n0->Index, n1->Index, n2->Index, n0->Pos, n1->Pos, n2->Pos))
type = ImTriangulatorNodeType_Ear;
else
type = ImTriangulatorNodeType_Convex;
// Update lists when a type changes
if (type == n1->Type)
return;
if (n1->Type == ImTriangulatorNodeType_Reflex)
_Reflexes.find_erase_unsorted(n1->Index);
else if (n1->Type == ImTriangulatorNodeType_Ear)
_Ears.find_erase_unsorted(n1->Index);
if (type == ImTriangulatorNodeType_Reflex)
_Reflexes.push_back(n1);
else if (type == ImTriangulatorNodeType_Ear)
_Ears.push_back(n1);
n1->Type = type;
}
// Use ear-clipping algorithm to triangulate a simple polygon (no self-interaction, no holes).
// (Reminder: we don't perform any coarse clipping/culling in ImDrawList layer!
// It is up to caller to ensure not making costly calls that will be outside of visible area.
// As concave fill is noticeably more expensive than other primitives, be mindful of this...
// Caller can build AABB of points, and avoid filling if 'draw_list->_CmdHeader.ClipRect.Overlays(points_bb) == false')
void ImDrawList::AddConcavePolyFilled(const ImVec2* points, const int points_count, ImU32 col)
{
if (points_count < 3 || (col & IM_COL32_A_MASK) == 0)
return;
const ImVec2 uv = _Data->TexUvWhitePixel;
ImTriangulator triangulator;
unsigned int triangle[3];
if (Flags & ImDrawListFlags_AntiAliasedFill)
{
// Anti-aliased Fill
const float AA_SIZE = _FringeScale;
const ImU32 col_trans = col & ~IM_COL32_A_MASK;
const int idx_count = (points_count - 2) * 3 + points_count * 6;
const int vtx_count = (points_count * 2);
PrimReserve(idx_count, vtx_count);
// Add indexes for fill
unsigned int vtx_inner_idx = _VtxCurrentIdx;
unsigned int vtx_outer_idx = _VtxCurrentIdx + 1;
_Data->TempBuffer.reserve_discard((ImTriangulator::EstimateScratchBufferSize(points_count) + sizeof(ImVec2)) / sizeof(ImVec2));
triangulator.Init(points, points_count, _Data->TempBuffer.Data);
while (triangulator._TrianglesLeft > 0)
{
triangulator.GetNextTriangle(triangle);
_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (triangle[0] << 1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (triangle[1] << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_inner_idx + (triangle[2] << 1));
_IdxWritePtr += 3;
}
// Compute normals
_Data->TempBuffer.reserve_discard(points_count);
ImVec2* temp_normals = _Data->TempBuffer.Data;
for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)
{
const ImVec2& p0 = points[i0];
const ImVec2& p1 = points[i1];
float dx = p1.x - p0.x;
float dy = p1.y - p0.y;
IM_NORMALIZE2F_OVER_ZERO(dx, dy);
temp_normals[i0].x = dy;
temp_normals[i0].y = -dx;
}
for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)
{
// Average normals
const ImVec2& n0 = temp_normals[i0];
const ImVec2& n1 = temp_normals[i1];
float dm_x = (n0.x + n1.x) * 0.5f;
float dm_y = (n0.y + n1.y) * 0.5f;
IM_FIXNORMAL2F(dm_x, dm_y);
dm_x *= AA_SIZE * 0.5f;
dm_y *= AA_SIZE * 0.5f;
// Add vertices
_VtxWritePtr[0].pos.x = (points[i1].x - dm_x); _VtxWritePtr[0].pos.y = (points[i1].y - dm_y); _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; // Inner
_VtxWritePtr[1].pos.x = (points[i1].x + dm_x); _VtxWritePtr[1].pos.y = (points[i1].y + dm_y); _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans; // Outer
_VtxWritePtr += 2;
// Add indexes for fringes
_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (i0 << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1));
_IdxWritePtr[3] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1)); _IdxWritePtr[4] = (ImDrawIdx)(vtx_outer_idx + (i1 << 1)); _IdxWritePtr[5] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1));
_IdxWritePtr += 6;
}
_VtxCurrentIdx += (ImDrawIdx)vtx_count;
}
else
{
// Non Anti-aliased Fill
const int idx_count = (points_count - 2) * 3;
const int vtx_count = points_count;
PrimReserve(idx_count, vtx_count);
for (int i = 0; i < vtx_count; i++)
{
_VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
_VtxWritePtr++;
}
_Data->TempBuffer.reserve_discard((ImTriangulator::EstimateScratchBufferSize(points_count) + sizeof(ImVec2)) / sizeof(ImVec2));
triangulator.Init(points, points_count, _Data->TempBuffer.Data);
while (triangulator._TrianglesLeft > 0)
{
triangulator.GetNextTriangle(triangle);
_IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx + triangle[0]); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + triangle[1]); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + triangle[2]);
_IdxWritePtr += 3;
}
_VtxCurrentIdx += (ImDrawIdx)vtx_count;
}
}
//-----------------------------------------------------------------------------
// [SECTION] ImDrawListSplitter
//-----------------------------------------------------------------------------
// FIXME: This may be a little confusing, trying to be a little too low-level/optimal instead of just doing vector swap..
//-----------------------------------------------------------------------------
void ImDrawListSplitter::ClearFreeMemory()
{
for (int i = 0; i < _Channels.Size; i++)
{
if (i == _Current)
memset(&_Channels[i], 0, sizeof(_Channels[i])); // Current channel is a copy of CmdBuffer/IdxBuffer, don't destruct again
_Channels[i]._CmdBuffer.clear();
_Channels[i]._IdxBuffer.clear();
}
_Current = 0;
_Count = 1;
_Channels.clear();
}
void ImDrawListSplitter::Split(ImDrawList* draw_list, int channels_count)
{
IM_UNUSED(draw_list);
IM_ASSERT(_Current == 0 && _Count <= 1 && "Nested channel splitting is not supported. Please use separate instances of ImDrawListSplitter.");
int old_channels_count = _Channels.Size;
if (old_channels_count < channels_count)
{
_Channels.reserve(channels_count); // Avoid over reserving since this is likely to stay stable
_Channels.resize(channels_count);
}
_Count = channels_count;
// Channels[] (24/32 bytes each) hold storage that we'll swap with draw_list->_CmdBuffer/_IdxBuffer
// The content of Channels[0] at this point doesn't matter. We clear it to make state tidy in a debugger but we don't strictly need to.
// When we switch to the next channel, we'll copy draw_list->_CmdBuffer/_IdxBuffer into Channels[0] and then Channels[1] into draw_list->CmdBuffer/_IdxBuffer
memset(&_Channels[0], 0, sizeof(ImDrawChannel));
for (int i = 1; i < channels_count; i++)
{
if (i >= old_channels_count)
{
IM_PLACEMENT_NEW(&_Channels[i]) ImDrawChannel();
}
else
{
_Channels[i]._CmdBuffer.resize(0);
_Channels[i]._IdxBuffer.resize(0);
}
}
}
void ImDrawListSplitter::Merge(ImDrawList* draw_list)
{
// Note that we never use or rely on _Channels.Size because it is merely a buffer that we never shrink back to 0 to keep all sub-buffers ready for use.
if (_Count <= 1)
return;
SetCurrentChannel(draw_list, 0);
draw_list->_PopUnusedDrawCmd();
// Calculate our final buffer sizes. Also fix the incorrect IdxOffset values in each command.
int new_cmd_buffer_count = 0;
int new_idx_buffer_count = 0;
ImDrawCmd* last_cmd = (_Count > 0 && draw_list->CmdBuffer.Size > 0) ? &draw_list->CmdBuffer.back() : NULL;
int idx_offset = last_cmd ? last_cmd->IdxOffset + last_cmd->ElemCount : 0;
for (int i = 1; i < _Count; i++)
{
ImDrawChannel& ch = _Channels[i];
if (ch._CmdBuffer.Size > 0 && ch._CmdBuffer.back().ElemCount == 0 && ch._CmdBuffer.back().UserCallback == NULL) // Equivalent of PopUnusedDrawCmd()
ch._CmdBuffer.pop_back();
if (ch._CmdBuffer.Size > 0 && last_cmd != NULL)
{
// Do not include ImDrawCmd_AreSequentialIdxOffset() in the compare as we rebuild IdxOffset values ourselves.
// Manipulating IdxOffset (e.g. by reordering draw commands like done by RenderDimmedBackgroundBehindWindow()) is not supported within a splitter.
ImDrawCmd* next_cmd = &ch._CmdBuffer[0];
if (ImDrawCmd_HeaderCompare(last_cmd, next_cmd) == 0 && last_cmd->UserCallback == NULL && next_cmd->UserCallback == NULL)
{
// Merge previous channel last draw command with current channel first draw command if matching.
last_cmd->ElemCount += next_cmd->ElemCount;
idx_offset += next_cmd->ElemCount;
ch._CmdBuffer.erase(ch._CmdBuffer.Data); // FIXME-OPT: Improve for multiple merges.
}
}
if (ch._CmdBuffer.Size > 0)
last_cmd = &ch._CmdBuffer.back();
new_cmd_buffer_count += ch._CmdBuffer.Size;
new_idx_buffer_count += ch._IdxBuffer.Size;
for (int cmd_n = 0; cmd_n < ch._CmdBuffer.Size; cmd_n++)
{
ch._CmdBuffer.Data[cmd_n].IdxOffset = idx_offset;
idx_offset += ch._CmdBuffer.Data[cmd_n].ElemCount;
}
}
draw_list->CmdBuffer.resize(draw_list->CmdBuffer.Size + new_cmd_buffer_count);
draw_list->IdxBuffer.resize(draw_list->IdxBuffer.Size + new_idx_buffer_count);
// Write commands and indices in order (they are fairly small structures, we don't copy vertices only indices)
ImDrawCmd* cmd_write = draw_list->CmdBuffer.Data + draw_list->CmdBuffer.Size - new_cmd_buffer_count;
ImDrawIdx* idx_write = draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size - new_idx_buffer_count;
for (int i = 1; i < _Count; i++)
{
ImDrawChannel& ch = _Channels[i];
if (int sz = ch._CmdBuffer.Size) { memcpy(cmd_write, ch._CmdBuffer.Data, sz * sizeof(ImDrawCmd)); cmd_write += sz; }
if (int sz = ch._IdxBuffer.Size) { memcpy(idx_write, ch._IdxBuffer.Data, sz * sizeof(ImDrawIdx)); idx_write += sz; }
}
draw_list->_IdxWritePtr = idx_write;
// Ensure there's always a non-callback draw command trailing the command-buffer
if (draw_list->CmdBuffer.Size == 0 || draw_list->CmdBuffer.back().UserCallback != NULL)
draw_list->AddDrawCmd();
// If current command is used with different settings we need to add a new command
ImDrawCmd* curr_cmd = &draw_list->CmdBuffer.Data[draw_list->CmdBuffer.Size - 1];
if (curr_cmd->ElemCount == 0)
ImDrawCmd_HeaderCopy(curr_cmd, &draw_list->_CmdHeader); // Copy ClipRect, TextureId, VtxOffset
else if (ImDrawCmd_HeaderCompare(curr_cmd, &draw_list->_CmdHeader) != 0)
draw_list->AddDrawCmd();
_Count = 1;
}
void ImDrawListSplitter::SetCurrentChannel(ImDrawList* draw_list, int idx)
{
IM_ASSERT(idx >= 0 && idx < _Count);
if (_Current == idx)
return;
// Overwrite ImVector (12/16 bytes), four times. This is merely a silly optimization instead of doing .swap()
memcpy(&_Channels.Data[_Current]._CmdBuffer, &draw_list->CmdBuffer, sizeof(draw_list->CmdBuffer));
memcpy(&_Channels.Data[_Current]._IdxBuffer, &draw_list->IdxBuffer, sizeof(draw_list->IdxBuffer));
_Current = idx;
memcpy(&draw_list->CmdBuffer, &_Channels.Data[idx]._CmdBuffer, sizeof(draw_list->CmdBuffer));
memcpy(&draw_list->IdxBuffer, &_Channels.Data[idx]._IdxBuffer, sizeof(draw_list->IdxBuffer));
draw_list->_IdxWritePtr = draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size;
// If current command is used with different settings we need to add a new command
ImDrawCmd* curr_cmd = (draw_list->CmdBuffer.Size == 0) ? NULL : &draw_list->CmdBuffer.Data[draw_list->CmdBuffer.Size - 1];
if (curr_cmd == NULL)
draw_list->AddDrawCmd();
else if (curr_cmd->ElemCount == 0)
ImDrawCmd_HeaderCopy(curr_cmd, &draw_list->_CmdHeader); // Copy ClipRect, TextureId, VtxOffset
else if (ImDrawCmd_HeaderCompare(curr_cmd, &draw_list->_CmdHeader) != 0)
draw_list->AddDrawCmd();
}
//-----------------------------------------------------------------------------
// [SECTION] ImDrawData
//-----------------------------------------------------------------------------
void ImDrawData::Clear()
{
Valid = false;
CmdListsCount = TotalIdxCount = TotalVtxCount = 0;
CmdLists.resize(0); // The ImDrawList are NOT owned by ImDrawData but e.g. by ImGuiContext, so we don't clear them.
DisplayPos = DisplaySize = FramebufferScale = ImVec2(0.0f, 0.0f);
OwnerViewport = NULL;
}
// Important: 'out_list' is generally going to be draw_data->CmdLists, but may be another temporary list
// as long at it is expected that the result will be later merged into draw_data->CmdLists[].
void ImGui::AddDrawListToDrawDataEx(ImDrawData* draw_data, ImVector<ImDrawList*>* out_list, ImDrawList* draw_list)
{
if (draw_list->CmdBuffer.Size == 0)
return;
if (draw_list->CmdBuffer.Size == 1 && draw_list->CmdBuffer[0].ElemCount == 0 && draw_list->CmdBuffer[0].UserCallback == NULL)
return;
// Draw list sanity check. Detect mismatch between PrimReserve() calls and incrementing _VtxCurrentIdx, _VtxWritePtr etc.
// May trigger for you if you are using PrimXXX functions incorrectly.
IM_ASSERT(draw_list->VtxBuffer.Size == 0 || draw_list->_VtxWritePtr == draw_list->VtxBuffer.Data + draw_list->VtxBuffer.Size);
IM_ASSERT(draw_list->IdxBuffer.Size == 0 || draw_list->_IdxWritePtr == draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size);
if (!(draw_list->Flags & ImDrawListFlags_AllowVtxOffset))
IM_ASSERT((int)draw_list->_VtxCurrentIdx == draw_list->VtxBuffer.Size);
// Check that draw_list doesn't use more vertices than indexable (default ImDrawIdx = unsigned short = 2 bytes = 64K vertices per ImDrawList = per window)
// If this assert triggers because you are drawing lots of stuff manually:
// - First, make sure you are coarse clipping yourself and not trying to draw many things outside visible bounds.
// Be mindful that the lower-level ImDrawList API doesn't filter vertices. Use the Metrics/Debugger window to inspect draw list contents.
// - If you want large meshes with more than 64K vertices, you can either:
// (A) Handle the ImDrawCmd::VtxOffset value in your renderer backend, and set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset'.
// Most example backends already support this from 1.71. Pre-1.71 backends won't.
// Some graphics API such as GL ES 1/2 don't have a way to offset the starting vertex so it is not supported for them.
// (B) Or handle 32-bit indices in your renderer backend, and uncomment '#define ImDrawIdx unsigned int' line in imconfig.h.
// Most example backends already support this. For example, the OpenGL example code detect index size at compile-time:
// glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
// Your own engine or render API may use different parameters or function calls to specify index sizes.
// 2 and 4 bytes indices are generally supported by most graphics API.
// - If for some reason neither of those solutions works for you, a workaround is to call BeginChild()/EndChild() before reaching
// the 64K limit to split your draw commands in multiple draw lists.
if (sizeof(ImDrawIdx) == 2)
IM_ASSERT(draw_list->_VtxCurrentIdx < (1 << 16) && "Too many vertices in ImDrawList using 16-bit indices. Read comment above");
// Add to output list + records state in ImDrawData
out_list->push_back(draw_list);
draw_data->CmdListsCount++;
draw_data->TotalVtxCount += draw_list->VtxBuffer.Size;
draw_data->TotalIdxCount += draw_list->IdxBuffer.Size;
}
void ImDrawData::AddDrawList(ImDrawList* draw_list)
{
IM_ASSERT(CmdLists.Size == CmdListsCount);
draw_list->_PopUnusedDrawCmd();
ImGui::AddDrawListToDrawDataEx(this, &CmdLists, draw_list);
}
// For backward compatibility: convert all buffers from indexed to de-indexed, in case you cannot render indexed. Note: this is slow and most likely a waste of resources. Always prefer indexed rendering!
void ImDrawData::DeIndexAllBuffers()
{
ImVector<ImDrawVert> new_vtx_buffer;
TotalVtxCount = TotalIdxCount = 0;
for (int i = 0; i < CmdListsCount; i++)
{
ImDrawList* cmd_list = CmdLists[i];
if (cmd_list->IdxBuffer.empty())
continue;
new_vtx_buffer.resize(cmd_list->IdxBuffer.Size);
for (int j = 0; j < cmd_list->IdxBuffer.Size; j++)
new_vtx_buffer[j] = cmd_list->VtxBuffer[cmd_list->IdxBuffer[j]];
cmd_list->VtxBuffer.swap(new_vtx_buffer);
cmd_list->IdxBuffer.resize(0);
TotalVtxCount += cmd_list->VtxBuffer.Size;
}
}
// Helper to scale the ClipRect field of each ImDrawCmd.
// Use if your final output buffer is at a different scale than draw_data->DisplaySize,
// or if there is a difference between your window resolution and framebuffer resolution.
void ImDrawData::ScaleClipRects(const ImVec2& fb_scale)
{
for (ImDrawList* draw_list : CmdLists)
for (ImDrawCmd& cmd : draw_list->CmdBuffer)
cmd.ClipRect = ImVec4(cmd.ClipRect.x * fb_scale.x, cmd.ClipRect.y * fb_scale.y, cmd.ClipRect.z * fb_scale.x, cmd.ClipRect.w * fb_scale.y);
}
//-----------------------------------------------------------------------------
// [SECTION] Helpers ShadeVertsXXX functions
//-----------------------------------------------------------------------------
// Generic linear color gradient, write to RGB fields, leave A untouched.
void ImGui::ShadeVertsLinearColorGradientKeepAlpha(ImDrawList* draw_list, int vert_start_idx, int vert_end_idx, ImVec2 gradient_p0, ImVec2 gradient_p1, ImU32 col0, ImU32 col1)
{
ImVec2 gradient_extent = gradient_p1 - gradient_p0;
float gradient_inv_length2 = 1.0f / ImLengthSqr(gradient_extent);
ImDrawVert* vert_start = draw_list->VtxBuffer.Data + vert_start_idx;
ImDrawVert* vert_end = draw_list->VtxBuffer.Data + vert_end_idx;
const int col0_r = (int)(col0 >> IM_COL32_R_SHIFT) & 0xFF;
const int col0_g = (int)(col0 >> IM_COL32_G_SHIFT) & 0xFF;
const int col0_b = (int)(col0 >> IM_COL32_B_SHIFT) & 0xFF;
const int col_delta_r = ((int)(col1 >> IM_COL32_R_SHIFT) & 0xFF) - col0_r;
const int col_delta_g = ((int)(col1 >> IM_COL32_G_SHIFT) & 0xFF) - col0_g;
const int col_delta_b = ((int)(col1 >> IM_COL32_B_SHIFT) & 0xFF) - col0_b;
for (ImDrawVert* vert = vert_start; vert < vert_end; vert++)
{
float d = ImDot(vert->pos - gradient_p0, gradient_extent);
float t = ImClamp(d * gradient_inv_length2, 0.0f, 1.0f);
int r = (int)(col0_r + col_delta_r * t);
int g = (int)(col0_g + col_delta_g * t);
int b = (int)(col0_b + col_delta_b * t);
vert->col = (r << IM_COL32_R_SHIFT) | (g << IM_COL32_G_SHIFT) | (b << IM_COL32_B_SHIFT) | (vert->col & IM_COL32_A_MASK);
}
}
// Distribute UV over (a, b) rectangle
void ImGui::ShadeVertsLinearUV(ImDrawList* draw_list, int vert_start_idx, int vert_end_idx, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, bool clamp)
{
const ImVec2 size = b - a;
const ImVec2 uv_size = uv_b - uv_a;
const ImVec2 scale = ImVec2(
size.x != 0.0f ? (uv_size.x / size.x) : 0.0f,
size.y != 0.0f ? (uv_size.y / size.y) : 0.0f);
ImDrawVert* vert_start = draw_list->VtxBuffer.Data + vert_start_idx;
ImDrawVert* vert_end = draw_list->VtxBuffer.Data + vert_end_idx;
if (clamp)
{
const ImVec2 min = ImMin(uv_a, uv_b);
const ImVec2 max = ImMax(uv_a, uv_b);
for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)
vertex->uv = ImClamp(uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale), min, max);
}
else
{
for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)
vertex->uv = uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale);
}
}
void ImGui::ShadeVertsTransformPos(ImDrawList* draw_list, int vert_start_idx, int vert_end_idx, const ImVec2& pivot_in, float cos_a, float sin_a, const ImVec2& pivot_out)
{
ImDrawVert* vert_start = draw_list->VtxBuffer.Data + vert_start_idx;
ImDrawVert* vert_end = draw_list->VtxBuffer.Data + vert_end_idx;
for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)
vertex->pos = ImRotate(vertex->pos- pivot_in, cos_a, sin_a) + pivot_out;
}
//-----------------------------------------------------------------------------
// [SECTION] ImFontConfig
//-----------------------------------------------------------------------------
ImFontConfig::ImFontConfig()
{
memset(this, 0, sizeof(*this));
FontDataOwnedByAtlas = true;
OversampleH = 2;
OversampleV = 1;
GlyphMaxAdvanceX = FLT_MAX;
RasterizerMultiply = 1.0f;
RasterizerDensity = 1.0f;
EllipsisChar = (ImWchar)-1;
}
//-----------------------------------------------------------------------------
// [SECTION] ImFontAtlas
//-----------------------------------------------------------------------------
// A work of art lies ahead! (. = white layer, X = black layer, others are blank)
// The 2x2 white texels on the top left are the ones we'll use everywhere in Dear ImGui to render filled shapes.
// (This is used when io.MouseDrawCursor = true)
const int FONT_ATLAS_DEFAULT_TEX_DATA_W = 122; // Actual texture will be 2 times that + 1 spacing.
const int FONT_ATLAS_DEFAULT_TEX_DATA_H = 27;
static const char FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[FONT_ATLAS_DEFAULT_TEX_DATA_W * FONT_ATLAS_DEFAULT_TEX_DATA_H + 1] =
{
"..- -XXXXXXX- X - X -XXXXXXX - XXXXXXX- XX - XX XX "
"..- -X.....X- X.X - X.X -X.....X - X.....X- X..X -X..X X..X"
"--- -XXX.XXX- X...X - X...X -X....X - X....X- X..X -X...X X...X"
"X - X.X - X.....X - X.....X -X...X - X...X- X..X - X...X X...X "
"XX - X.X -X.......X- X.......X -X..X.X - X.X..X- X..X - X...X...X "
"X.X - X.X -XXXX.XXXX- XXXX.XXXX -X.X X.X - X.X X.X- X..XXX - X.....X "
"X..X - X.X - X.X - X.X -XX X.X - X.X XX- X..X..XXX - X...X "
"X...X - X.X - X.X - XX X.X XX - X.X - X.X - X..X..X..XX - X.X "
"X....X - X.X - X.X - X.X X.X X.X - X.X - X.X - X..X..X..X.X - X...X "
"X.....X - X.X - X.X - X..X X.X X..X - X.X - X.X -XXX X..X..X..X..X- X.....X "
"X......X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X XX-XX X.X -X..XX........X..X- X...X...X "
"X.......X - X.X - X.X -X.....................X- X.X X.X-X.X X.X -X...X...........X- X...X X...X "
"X........X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X..X-X..X.X - X..............X-X...X X...X"
"X.........X -XXX.XXX- X.X - X..X X.X X..X - X...X-X...X - X.............X-X..X X..X"
"X..........X-X.....X- X.X - X.X X.X X.X - X....X-X....X - X.............X- XX XX "
"X......XXXXX-XXXXXXX- X.X - XX X.X XX - X.....X-X.....X - X............X--------------"
"X...X..X --------- X.X - X.X - XXXXXXX-XXXXXXX - X...........X - "
"X..X X..X - -XXXX.XXXX- XXXX.XXXX ------------------------------------- X..........X - "
"X.X X..X - -X.......X- X.......X - XX XX - - X..........X - "
"XX X..X - - X.....X - X.....X - X.X X.X - - X........X - "
" X..X - - X...X - X...X - X..X X..X - - X........X - "
" XX - - X.X - X.X - X...XXXXXXXXXXXXX...X - - XXXXXXXXXX - "
"------------- - X - X -X.....................X- ------------------- "
" ----------------------------------- X...XXXXXXXXXXXXX...X - "
" - X..X X..X - "
" - X.X X.X - "
" - XX XX - "
};
static const ImVec2 FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[ImGuiMouseCursor_COUNT][3] =
{
// Pos ........ Size ......... Offset ......
{ ImVec2( 0,3), ImVec2(12,19), ImVec2( 0, 0) }, // ImGuiMouseCursor_Arrow
{ ImVec2(13,0), ImVec2( 7,16), ImVec2( 1, 8) }, // ImGuiMouseCursor_TextInput
{ ImVec2(31,0), ImVec2(23,23), ImVec2(11,11) }, // ImGuiMouseCursor_ResizeAll
{ ImVec2(21,0), ImVec2( 9,23), ImVec2( 4,11) }, // ImGuiMouseCursor_ResizeNS
{ ImVec2(55,18),ImVec2(23, 9), ImVec2(11, 4) }, // ImGuiMouseCursor_ResizeEW
{ ImVec2(73,0), ImVec2(17,17), ImVec2( 8, 8) }, // ImGuiMouseCursor_ResizeNESW
{ ImVec2(55,0), ImVec2(17,17), ImVec2( 8, 8) }, // ImGuiMouseCursor_ResizeNWSE
{ ImVec2(91,0), ImVec2(17,22), ImVec2( 5, 0) }, // ImGuiMouseCursor_Hand
{ ImVec2(109,0),ImVec2(13,15), ImVec2( 6, 7) }, // ImGuiMouseCursor_NotAllowed
};
ImFontAtlas::ImFontAtlas()
{
memset(this, 0, sizeof(*this));
TexGlyphPadding = 1;
PackIdMouseCursors = PackIdLines = -1;
}
ImFontAtlas::~ImFontAtlas()
{
IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
Clear();
}
void ImFontAtlas::ClearInputData()
{
IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
for (ImFontConfig& font_cfg : ConfigData)
if (font_cfg.FontData && font_cfg.FontDataOwnedByAtlas)
{
IM_FREE(font_cfg.FontData);
font_cfg.FontData = NULL;
}
// When clearing this we lose access to the font name and other information used to build the font.
for (ImFont* font : Fonts)
if (font->ConfigData >= ConfigData.Data && font->ConfigData < ConfigData.Data + ConfigData.Size)
{
font->ConfigData = NULL;
font->ConfigDataCount = 0;
}
ConfigData.clear();
CustomRects.clear();
PackIdMouseCursors = PackIdLines = -1;
// Important: we leave TexReady untouched
}
void ImFontAtlas::ClearTexData()
{
IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
if (TexPixelsAlpha8)
IM_FREE(TexPixelsAlpha8);
if (TexPixelsRGBA32)
IM_FREE(TexPixelsRGBA32);
TexPixelsAlpha8 = NULL;
TexPixelsRGBA32 = NULL;
TexPixelsUseColors = false;
// Important: we leave TexReady untouched
}
void ImFontAtlas::ClearFonts()
{
IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
Fonts.clear_delete();
TexReady = false;
}
void ImFontAtlas::Clear()
{
ClearInputData();
ClearTexData();
ClearFonts();
}
void ImFontAtlas::GetTexDataAsAlpha8(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)
{
// Build atlas on demand
if (TexPixelsAlpha8 == NULL)
Build();
*out_pixels = TexPixelsAlpha8;
if (out_width) *out_width = TexWidth;
if (out_height) *out_height = TexHeight;
if (out_bytes_per_pixel) *out_bytes_per_pixel = 1;
}
void ImFontAtlas::GetTexDataAsRGBA32(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)
{
// Convert to RGBA32 format on demand
// Although it is likely to be the most commonly used format, our font rendering is 1 channel / 8 bpp
if (!TexPixelsRGBA32)
{
unsigned char* pixels = NULL;
GetTexDataAsAlpha8(&pixels, NULL, NULL);
if (pixels)
{
TexPixelsRGBA32 = (unsigned int*)IM_ALLOC((size_t)TexWidth * (size_t)TexHeight * 4);
const unsigned char* src = pixels;
unsigned int* dst = TexPixelsRGBA32;
for (int n = TexWidth * TexHeight; n > 0; n--)
*dst++ = IM_COL32(255, 255, 255, (unsigned int)(*src++));
}
}
*out_pixels = (unsigned char*)TexPixelsRGBA32;
if (out_width) *out_width = TexWidth;
if (out_height) *out_height = TexHeight;
if (out_bytes_per_pixel) *out_bytes_per_pixel = 4;
}
ImFont* ImFontAtlas::AddFont(const ImFontConfig* font_cfg)
{
IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
IM_ASSERT(font_cfg->FontData != NULL && font_cfg->FontDataSize > 0);
IM_ASSERT(font_cfg->SizePixels > 0.0f);
// Create new font
if (!font_cfg->MergeMode)
Fonts.push_back(IM_NEW(ImFont));
else
IM_ASSERT(!Fonts.empty() && "Cannot use MergeMode for the first font"); // When using MergeMode make sure that a font has already been added before. You can use ImGui::GetIO().Fonts->AddFontDefault() to add the default imgui font.
ConfigData.push_back(*font_cfg);
ImFontConfig& new_font_cfg = ConfigData.back();
if (new_font_cfg.DstFont == NULL)
new_font_cfg.DstFont = Fonts.back();
if (!new_font_cfg.FontDataOwnedByAtlas)
{
new_font_cfg.FontData = IM_ALLOC(new_font_cfg.FontDataSize);
new_font_cfg.FontDataOwnedByAtlas = true;
memcpy(new_font_cfg.FontData, font_cfg->FontData, (size_t)new_font_cfg.FontDataSize);
}
if (new_font_cfg.DstFont->EllipsisChar == (ImWchar)-1)
new_font_cfg.DstFont->EllipsisChar = font_cfg->EllipsisChar;
ImFontAtlasUpdateConfigDataPointers(this);
// Invalidate texture
TexReady = false;
ClearTexData();
return new_font_cfg.DstFont;
}
// Default font TTF is compressed with stb_compress then base85 encoded (see misc/fonts/binary_to_compressed_c.cpp for encoder)
static unsigned int stb_decompress_length(const unsigned char* input);
static unsigned int stb_decompress(unsigned char* output, const unsigned char* input, unsigned int length);
static const char* GetDefaultCompressedFontDataTTFBase85();
static unsigned int Decode85Byte(char c) { return c >= '\\' ? c-36 : c-35; }
static void Decode85(const unsigned char* src, unsigned char* dst)
{
while (*src)
{
unsigned int tmp = Decode85Byte(src[0]) + 85 * (Decode85Byte(src[1]) + 85 * (Decode85Byte(src[2]) + 85 * (Decode85Byte(src[3]) + 85 * Decode85Byte(src[4]))));
dst[0] = ((tmp >> 0) & 0xFF); dst[1] = ((tmp >> 8) & 0xFF); dst[2] = ((tmp >> 16) & 0xFF); dst[3] = ((tmp >> 24) & 0xFF); // We can't assume little-endianness.
src += 5;
dst += 4;
}
}
// Load embedded ProggyClean.ttf at size 13, disable oversampling
ImFont* ImFontAtlas::AddFontDefault(const ImFontConfig* font_cfg_template)
{
ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
if (!font_cfg_template)
{
font_cfg.OversampleH = font_cfg.OversampleV = 1;
font_cfg.PixelSnapH = true;
}
if (font_cfg.SizePixels <= 0.0f)
font_cfg.SizePixels = 13.0f * 1.0f;
if (font_cfg.Name[0] == '\0')
ImFormatString(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "ProggyClean.ttf, %dpx", (int)font_cfg.SizePixels);
font_cfg.EllipsisChar = (ImWchar)0x0085;
font_cfg.GlyphOffset.y = 1.0f * IM_TRUNC(font_cfg.SizePixels / 13.0f); // Add +1 offset per 13 units
const char* ttf_compressed_base85 = GetDefaultCompressedFontDataTTFBase85();
const ImWchar* glyph_ranges = font_cfg.GlyphRanges != NULL ? font_cfg.GlyphRanges : GetGlyphRangesDefault();
ImFont* font = AddFontFromMemoryCompressedBase85TTF(ttf_compressed_base85, font_cfg.SizePixels, &font_cfg, glyph_ranges);
return font;
}
ImFont* ImFontAtlas::AddFontFromFileTTF(const char* filename, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
{
IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
size_t data_size = 0;
void* data = ImFileLoadToMemory(filename, "rb", &data_size, 0);
if (!data)
{
IM_ASSERT_USER_ERROR(0, "Could not load font file!");
return NULL;
}
ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
if (font_cfg.Name[0] == '\0')
{
// Store a short copy of filename into into the font name for convenience
const char* p;
for (p = filename + strlen(filename); p > filename && p[-1] != '/' && p[-1] != '\\'; p--) {}
ImFormatString(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "%s, %.0fpx", p, size_pixels);
}
return AddFontFromMemoryTTF(data, (int)data_size, size_pixels, &font_cfg, glyph_ranges);
}
// NB: Transfer ownership of 'ttf_data' to ImFontAtlas, unless font_cfg_template->FontDataOwnedByAtlas == false. Owned TTF buffer will be deleted after Build().
ImFont* ImFontAtlas::AddFontFromMemoryTTF(void* font_data, int font_data_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
{
IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
IM_ASSERT(font_cfg.FontData == NULL);
IM_ASSERT(font_data_size > 100 && "Incorrect value for font_data_size!"); // Heuristic to prevent accidentally passing a wrong value to font_data_size.
font_cfg.FontData = font_data;
font_cfg.FontDataSize = font_data_size;
font_cfg.SizePixels = size_pixels > 0.0f ? size_pixels : font_cfg.SizePixels;
if (glyph_ranges)
font_cfg.GlyphRanges = glyph_ranges;
return AddFont(&font_cfg);
}
ImFont* ImFontAtlas::AddFontFromMemoryCompressedTTF(const void* compressed_ttf_data, int compressed_ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
{
const unsigned int buf_decompressed_size = stb_decompress_length((const unsigned char*)compressed_ttf_data);
unsigned char* buf_decompressed_data = (unsigned char*)IM_ALLOC(buf_decompressed_size);
stb_decompress(buf_decompressed_data, (const unsigned char*)compressed_ttf_data, (unsigned int)compressed_ttf_size);
ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
IM_ASSERT(font_cfg.FontData == NULL);
font_cfg.FontDataOwnedByAtlas = true;
return AddFontFromMemoryTTF(buf_decompressed_data, (int)buf_decompressed_size, size_pixels, &font_cfg, glyph_ranges);
}
ImFont* ImFontAtlas::AddFontFromMemoryCompressedBase85TTF(const char* compressed_ttf_data_base85, float size_pixels, const ImFontConfig* font_cfg, const ImWchar* glyph_ranges)
{
int compressed_ttf_size = (((int)strlen(compressed_ttf_data_base85) + 4) / 5) * 4;
void* compressed_ttf = IM_ALLOC((size_t)compressed_ttf_size);
Decode85((const unsigned char*)compressed_ttf_data_base85, (unsigned char*)compressed_ttf);
ImFont* font = AddFontFromMemoryCompressedTTF(compressed_ttf, compressed_ttf_size, size_pixels, font_cfg, glyph_ranges);
IM_FREE(compressed_ttf);
return font;
}
int ImFontAtlas::AddCustomRectRegular(int width, int height)
{
IM_ASSERT(width > 0 && width <= 0xFFFF);
IM_ASSERT(height > 0 && height <= 0xFFFF);
ImFontAtlasCustomRect r;
r.Width = (unsigned short)width;
r.Height = (unsigned short)height;
CustomRects.push_back(r);
return CustomRects.Size - 1; // Return index
}
int ImFontAtlas::AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int height, float advance_x, const ImVec2& offset)
{
#ifdef IMGUI_USE_WCHAR32
IM_ASSERT(id <= IM_UNICODE_CODEPOINT_MAX);
#endif
IM_ASSERT(font != NULL);
IM_ASSERT(width > 0 && width <= 0xFFFF);
IM_ASSERT(height > 0 && height <= 0xFFFF);
ImFontAtlasCustomRect r;
r.Width = (unsigned short)width;
r.Height = (unsigned short)height;
r.GlyphID = id;
r.GlyphAdvanceX = advance_x;
r.GlyphOffset = offset;
r.Font = font;
CustomRects.push_back(r);
return CustomRects.Size - 1; // Return index
}
void ImFontAtlas::CalcCustomRectUV(const ImFontAtlasCustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max) const
{
IM_ASSERT(TexWidth > 0 && TexHeight > 0); // Font atlas needs to be built before we can calculate UV coordinates
IM_ASSERT(rect->IsPacked()); // Make sure the rectangle has been packed
*out_uv_min = ImVec2((float)rect->X * TexUvScale.x, (float)rect->Y * TexUvScale.y);
*out_uv_max = ImVec2((float)(rect->X + rect->Width) * TexUvScale.x, (float)(rect->Y + rect->Height) * TexUvScale.y);
}
bool ImFontAtlas::GetMouseCursorTexData(ImGuiMouseCursor cursor_type, ImVec2* out_offset, ImVec2* out_size, ImVec2 out_uv_border[2], ImVec2 out_uv_fill[2])
{
if (cursor_type <= ImGuiMouseCursor_None || cursor_type >= ImGuiMouseCursor_COUNT)
return false;
if (Flags & ImFontAtlasFlags_NoMouseCursors)
return false;
IM_ASSERT(PackIdMouseCursors != -1);
ImFontAtlasCustomRect* r = GetCustomRectByIndex(PackIdMouseCursors);
ImVec2 pos = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][0] + ImVec2((float)r->X, (float)r->Y);
ImVec2 size = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][1];
*out_size = size;
*out_offset = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][2];
out_uv_border[0] = (pos) * TexUvScale;
out_uv_border[1] = (pos + size) * TexUvScale;
pos.x += FONT_ATLAS_DEFAULT_TEX_DATA_W + 1;
out_uv_fill[0] = (pos) * TexUvScale;
out_uv_fill[1] = (pos + size) * TexUvScale;
return true;
}
bool ImFontAtlas::Build()
{
IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
// Default font is none are specified
if (ConfigData.Size == 0)
AddFontDefault();
// Select builder
// - Note that we do not reassign to atlas->FontBuilderIO, since it is likely to point to static data which
// may mess with some hot-reloading schemes. If you need to assign to this (for dynamic selection) AND are
// using a hot-reloading scheme that messes up static data, store your own instance of ImFontBuilderIO somewhere
// and point to it instead of pointing directly to return value of the GetBuilderXXX functions.
const ImFontBuilderIO* builder_io = FontBuilderIO;
if (builder_io == NULL)
{
#ifdef IMGUI_ENABLE_FREETYPE
builder_io = ImGuiFreeType::GetBuilderForFreeType();
#elif defined(IMGUI_ENABLE_STB_TRUETYPE)
builder_io = ImFontAtlasGetBuilderForStbTruetype();
#else
IM_ASSERT(0); // Invalid Build function
#endif
}
// Build
return builder_io->FontBuilder_Build(this);
}
void ImFontAtlasBuildMultiplyCalcLookupTable(unsigned char out_table[256], float in_brighten_factor)
{
for (unsigned int i = 0; i < 256; i++)
{
unsigned int value = (unsigned int)(i * in_brighten_factor);
out_table[i] = value > 255 ? 255 : (value & 0xFF);
}
}
void ImFontAtlasBuildMultiplyRectAlpha8(const unsigned char table[256], unsigned char* pixels, int x, int y, int w, int h, int stride)
{
IM_ASSERT_PARANOID(w <= stride);
unsigned char* data = pixels + x + y * stride;
for (int j = h; j > 0; j--, data += stride - w)
for (int i = w; i > 0; i--, data++)
*data = table[*data];
}
#ifdef IMGUI_ENABLE_STB_TRUETYPE
// Temporary data for one source font (multiple source fonts can be merged into one destination ImFont)
// (C++03 doesn't allow instancing ImVector<> with function-local types so we declare the type here.)
struct ImFontBuildSrcData
{
stbtt_fontinfo FontInfo;
stbtt_pack_range PackRange; // Hold the list of codepoints to pack (essentially points to Codepoints.Data)
stbrp_rect* Rects; // Rectangle to pack. We first fill in their size and the packer will give us their position.
stbtt_packedchar* PackedChars; // Output glyphs
const ImWchar* SrcRanges; // Ranges as requested by user (user is allowed to request too much, e.g. 0x0020..0xFFFF)
int DstIndex; // Index into atlas->Fonts[] and dst_tmp_array[]
int GlyphsHighest; // Highest requested codepoint
int GlyphsCount; // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
ImBitVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
ImVector<int> GlyphsList; // Glyph codepoints list (flattened version of GlyphsSet)
};
// Temporary data for one destination ImFont* (multiple source fonts can be merged into one destination ImFont)
struct ImFontBuildDstData
{
int SrcCount; // Number of source fonts targeting this destination font.
int GlyphsHighest;
int GlyphsCount;
ImBitVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.
};
static void UnpackBitVectorToFlatIndexList(const ImBitVector* in, ImVector<int>* out)
{
IM_ASSERT(sizeof(in->Storage.Data[0]) == sizeof(int));
const ImU32* it_begin = in->Storage.begin();
const ImU32* it_end = in->Storage.end();
for (const ImU32* it = it_begin; it < it_end; it++)
if (ImU32 entries_32 = *it)
for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
if (entries_32 & ((ImU32)1 << bit_n))
out->push_back((int)(((it - it_begin) << 5) + bit_n));
}
static bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
{
IM_ASSERT(atlas->ConfigData.Size > 0);
ImFontAtlasBuildInit(atlas);
// Clear atlas
atlas->TexID = (ImTextureID)NULL;
atlas->TexWidth = atlas->TexHeight = 0;
atlas->TexUvScale = ImVec2(0.0f, 0.0f);
atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);
atlas->ClearTexData();
// Temporary storage for building
ImVector<ImFontBuildSrcData> src_tmp_array;
ImVector<ImFontBuildDstData> dst_tmp_array;
src_tmp_array.resize(atlas->ConfigData.Size);
dst_tmp_array.resize(atlas->Fonts.Size);
memset(src_tmp_array.Data, 0, (size_t)src_tmp_array.size_in_bytes());
memset(dst_tmp_array.Data, 0, (size_t)dst_tmp_array.size_in_bytes());
// 1. Initialize font loading structure, check font data validity
for (int src_i = 0; src_i < atlas->ConfigData.Size; src_i++)
{
ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
ImFontConfig& cfg = atlas->ConfigData[src_i];
IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));
// Find index from cfg.DstFont (we allow the user to set cfg.DstFont. Also it makes casual debugging nicer than when storing indices)
src_tmp.DstIndex = -1;
for (int output_i = 0; output_i < atlas->Fonts.Size && src_tmp.DstIndex == -1; output_i++)
if (cfg.DstFont == atlas->Fonts[output_i])
src_tmp.DstIndex = output_i;
if (src_tmp.DstIndex == -1)
{
IM_ASSERT(src_tmp.DstIndex != -1); // cfg.DstFont not pointing within atlas->Fonts[] array?
return false;
}
// Initialize helper structure for font loading and verify that the TTF/OTF data is correct
const int font_offset = stbtt_GetFontOffsetForIndex((unsigned char*)cfg.FontData, cfg.FontNo);
IM_ASSERT(font_offset >= 0 && "FontData is incorrect, or FontNo cannot be found.");
if (!stbtt_InitFont(&src_tmp.FontInfo, (unsigned char*)cfg.FontData, font_offset))
{
IM_ASSERT(0 && "stbtt_InitFont(): failed to parse FontData. It is correct and complete? Check FontDataSize.");
return false;
}
// Measure highest codepoints
ImFontBuildDstData& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
src_tmp.SrcRanges = cfg.GlyphRanges ? cfg.GlyphRanges : atlas->GetGlyphRangesDefault();
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
{
// Check for valid range. This may also help detect *some* dangling pointers, because a common
// user error is to setup ImFontConfig::GlyphRanges with a pointer to data that isn't persistent.
IM_ASSERT(src_range[0] <= src_range[1]);
src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
}
dst_tmp.SrcCount++;
dst_tmp.GlyphsHighest = ImMax(dst_tmp.GlyphsHighest, src_tmp.GlyphsHighest);
}
// 2. For every requested codepoint, check for their presence in the font data, and handle redundancy or overlaps between source fonts to avoid unused glyphs.
int total_glyphs_count = 0;
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
ImFontBuildDstData& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
if (dst_tmp.GlyphsSet.Storage.empty())
dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
for (unsigned int codepoint = src_range[0]; codepoint <= src_range[1]; codepoint++)
{
if (dst_tmp.GlyphsSet.TestBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option for MergeMode (e.g. MergeOverwrite==true)
continue;
if (!stbtt_FindGlyphIndex(&src_tmp.FontInfo, codepoint)) // It is actually in the font?
continue;
// Add to avail set/counters
src_tmp.GlyphsCount++;
dst_tmp.GlyphsCount++;
src_tmp.GlyphsSet.SetBit(codepoint);
dst_tmp.GlyphsSet.SetBit(codepoint);
total_glyphs_count++;
}
}
// 3. Unpack our bit map into a flat list (we now have all the Unicode points that we know are requested _and_ available _and_ not overlapping another)
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
UnpackBitVectorToFlatIndexList(&src_tmp.GlyphsSet, &src_tmp.GlyphsList);
src_tmp.GlyphsSet.Clear();
IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);
}
for (int dst_i = 0; dst_i < dst_tmp_array.Size; dst_i++)
dst_tmp_array[dst_i].GlyphsSet.Clear();
dst_tmp_array.clear();
// Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
// (We technically don't need to zero-clear buf_rects, but let's do it for the sake of sanity)
ImVector<stbrp_rect> buf_rects;
ImVector<stbtt_packedchar> buf_packedchars;
buf_rects.resize(total_glyphs_count);
buf_packedchars.resize(total_glyphs_count);
memset(buf_rects.Data, 0, (size_t)buf_rects.size_in_bytes());
memset(buf_packedchars.Data, 0, (size_t)buf_packedchars.size_in_bytes());
// 4. Gather glyphs sizes so we can pack them in our virtual canvas.
int total_surface = 0;
int buf_rects_out_n = 0;
int buf_packedchars_out_n = 0;
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
if (src_tmp.GlyphsCount == 0)
continue;
src_tmp.Rects = &buf_rects[buf_rects_out_n];
src_tmp.PackedChars = &buf_packedchars[buf_packedchars_out_n];
buf_rects_out_n += src_tmp.GlyphsCount;
buf_packedchars_out_n += src_tmp.GlyphsCount;
// Convert our ranges in the format stb_truetype wants
ImFontConfig& cfg = atlas->ConfigData[src_i];
src_tmp.PackRange.font_size = cfg.SizePixels * cfg.RasterizerDensity;
src_tmp.PackRange.first_unicode_codepoint_in_range = 0;
src_tmp.PackRange.array_of_unicode_codepoints = src_tmp.GlyphsList.Data;
src_tmp.PackRange.num_chars = src_tmp.GlyphsList.Size;
src_tmp.PackRange.chardata_for_range = src_tmp.PackedChars;
src_tmp.PackRange.h_oversample = (unsigned char)cfg.OversampleH;
src_tmp.PackRange.v_oversample = (unsigned char)cfg.OversampleV;
// Gather the sizes of all rectangles we will need to pack (this loop is based on stbtt_PackFontRangesGatherRects)
const float scale = (cfg.SizePixels > 0.0f) ? stbtt_ScaleForPixelHeight(&src_tmp.FontInfo, cfg.SizePixels * cfg.RasterizerDensity) : stbtt_ScaleForMappingEmToPixels(&src_tmp.FontInfo, -cfg.SizePixels * cfg.RasterizerDensity);
const int padding = atlas->TexGlyphPadding;
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)
{
int x0, y0, x1, y1;
const int glyph_index_in_font = stbtt_FindGlyphIndex(&src_tmp.FontInfo, src_tmp.GlyphsList[glyph_i]);
IM_ASSERT(glyph_index_in_font != 0);
stbtt_GetGlyphBitmapBoxSubpixel(&src_tmp.FontInfo, glyph_index_in_font, scale * cfg.OversampleH, scale * cfg.OversampleV, 0, 0, &x0, &y0, &x1, &y1);
src_tmp.Rects[glyph_i].w = (stbrp_coord)(x1 - x0 + padding + cfg.OversampleH - 1);
src_tmp.Rects[glyph_i].h = (stbrp_coord)(y1 - y0 + padding + cfg.OversampleV - 1);
total_surface += src_tmp.Rects[glyph_i].w * src_tmp.Rects[glyph_i].h;
}
}
// We need a width for the skyline algorithm, any width!
// The exact width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
// User can override TexDesiredWidth and TexGlyphPadding if they wish, otherwise we use a simple heuristic to select the width based on expected surface.
const int surface_sqrt = (int)ImSqrt((float)total_surface) + 1;
atlas->TexHeight = 0;
if (atlas->TexDesiredWidth > 0)
atlas->TexWidth = atlas->TexDesiredWidth;
else
atlas->TexWidth = (surface_sqrt >= 4096 * 0.7f) ? 4096 : (surface_sqrt >= 2048 * 0.7f) ? 2048 : (surface_sqrt >= 1024 * 0.7f) ? 1024 : 512;
// 5. Start packing
// Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
const int TEX_HEIGHT_MAX = 1024 * 32;
stbtt_pack_context spc = {};
stbtt_PackBegin(&spc, NULL, atlas->TexWidth, TEX_HEIGHT_MAX, 0, atlas->TexGlyphPadding, NULL);
ImFontAtlasBuildPackCustomRects(atlas, spc.pack_info);
// 6. Pack each source font. No rendering yet, we are working with rectangles in an infinitely tall texture at this point.
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
if (src_tmp.GlyphsCount == 0)
continue;
stbrp_pack_rects((stbrp_context*)spc.pack_info, src_tmp.Rects, src_tmp.GlyphsCount);
// Extend texture height and mark missing glyphs as non-packed so we won't render them.
// FIXME: We are not handling packing failure here (would happen if we got off TEX_HEIGHT_MAX or if a single if larger than TexWidth?)
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
if (src_tmp.Rects[glyph_i].was_packed)
atlas->TexHeight = ImMax(atlas->TexHeight, src_tmp.Rects[glyph_i].y + src_tmp.Rects[glyph_i].h);
}
// 7. Allocate texture
atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(atlas->TexWidth * atlas->TexHeight);
memset(atlas->TexPixelsAlpha8, 0, atlas->TexWidth * atlas->TexHeight);
spc.pixels = atlas->TexPixelsAlpha8;
spc.height = atlas->TexHeight;
// 8. Render/rasterize font characters into the texture
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontConfig& cfg = atlas->ConfigData[src_i];
ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
if (src_tmp.GlyphsCount == 0)
continue;
stbtt_PackFontRangesRenderIntoRects(&spc, &src_tmp.FontInfo, &src_tmp.PackRange, 1, src_tmp.Rects);
// Apply multiply operator
if (cfg.RasterizerMultiply != 1.0f)
{
unsigned char multiply_table[256];
ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);
stbrp_rect* r = &src_tmp.Rects[0];
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++, r++)
if (r->was_packed)
ImFontAtlasBuildMultiplyRectAlpha8(multiply_table, atlas->TexPixelsAlpha8, r->x, r->y, r->w, r->h, atlas->TexWidth * 1);
}
src_tmp.Rects = NULL;
}
// End packing
stbtt_PackEnd(&spc);
buf_rects.clear();
// 9. Setup ImFont and glyphs for runtime
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
// When merging fonts with MergeMode=true:
// - We can have multiple input fonts writing into a same destination font.
// - dst_font->ConfigData is != from cfg which is our source configuration.
ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
ImFontConfig& cfg = atlas->ConfigData[src_i];
ImFont* dst_font = cfg.DstFont;
const float font_scale = stbtt_ScaleForPixelHeight(&src_tmp.FontInfo, cfg.SizePixels);
int unscaled_ascent, unscaled_descent, unscaled_line_gap;
stbtt_GetFontVMetrics(&src_tmp.FontInfo, &unscaled_ascent, &unscaled_descent, &unscaled_line_gap);
const float ascent = ImCeil(unscaled_ascent * font_scale);
const float descent = ImFloor(unscaled_descent * font_scale);
ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
const float font_off_x = cfg.GlyphOffset.x;
const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
const float inv_rasterization_scale = 1.0f / cfg.RasterizerDensity;
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
{
// Register glyph
const int codepoint = src_tmp.GlyphsList[glyph_i];
const stbtt_packedchar& pc = src_tmp.PackedChars[glyph_i];
stbtt_aligned_quad q;
float unused_x = 0.0f, unused_y = 0.0f;
stbtt_GetPackedQuad(src_tmp.PackedChars, atlas->TexWidth, atlas->TexHeight, glyph_i, &unused_x, &unused_y, &q, 0);
float x0 = q.x0 * inv_rasterization_scale + font_off_x;
float y0 = q.y0 * inv_rasterization_scale + font_off_y;
float x1 = q.x1 * inv_rasterization_scale + font_off_x;
float y1 = q.y1 * inv_rasterization_scale + font_off_y;
dst_font->AddGlyph(&cfg, (ImWchar)codepoint, x0, y0, x1, y1, q.s0, q.t0, q.s1, q.t1, pc.xadvance * inv_rasterization_scale);
}
}
// Cleanup
src_tmp_array.clear_destruct();
ImFontAtlasBuildFinish(atlas);
return true;
}
const ImFontBuilderIO* ImFontAtlasGetBuilderForStbTruetype()
{
static ImFontBuilderIO io;
io.FontBuilder_Build = ImFontAtlasBuildWithStbTruetype;
return &io;
}
#endif // IMGUI_ENABLE_STB_TRUETYPE
void ImFontAtlasUpdateConfigDataPointers(ImFontAtlas* atlas)
{
for (ImFontConfig& font_cfg : atlas->ConfigData)
{
ImFont* font = font_cfg.DstFont;
if (!font_cfg.MergeMode)
{
font->ConfigData = &font_cfg;
font->ConfigDataCount = 0;
}
font->ConfigDataCount++;
}
}
void ImFontAtlasBuildSetupFont(ImFontAtlas* atlas, ImFont* font, ImFontConfig* font_config, float ascent, float descent)
{
if (!font_config->MergeMode)
{
font->ClearOutputData();
font->FontSize = font_config->SizePixels;
IM_ASSERT(font->ConfigData == font_config);
font->ContainerAtlas = atlas;
font->Ascent = ascent;
font->Descent = descent;
}
}
void ImFontAtlasBuildPackCustomRects(ImFontAtlas* atlas, void* stbrp_context_opaque)
{
stbrp_context* pack_context = (stbrp_context*)stbrp_context_opaque;
IM_ASSERT(pack_context != NULL);
ImVector<ImFontAtlasCustomRect>& user_rects = atlas->CustomRects;
IM_ASSERT(user_rects.Size >= 1); // We expect at least the default custom rects to be registered, else something went wrong.
#ifdef __GNUC__
if (user_rects.Size < 1) { __builtin_unreachable(); } // Workaround for GCC bug if IM_ASSERT() is defined to conditionally throw (see #5343)
#endif
ImVector<stbrp_rect> pack_rects;
pack_rects.resize(user_rects.Size);
memset(pack_rects.Data, 0, (size_t)pack_rects.size_in_bytes());
for (int i = 0; i < user_rects.Size; i++)
{
pack_rects[i].w = user_rects[i].Width;
pack_rects[i].h = user_rects[i].Height;
}
stbrp_pack_rects(pack_context, &pack_rects[0], pack_rects.Size);
for (int i = 0; i < pack_rects.Size; i++)
if (pack_rects[i].was_packed)
{
user_rects[i].X = (unsigned short)pack_rects[i].x;
user_rects[i].Y = (unsigned short)pack_rects[i].y;
IM_ASSERT(pack_rects[i].w == user_rects[i].Width && pack_rects[i].h == user_rects[i].Height);
atlas->TexHeight = ImMax(atlas->TexHeight, pack_rects[i].y + pack_rects[i].h);
}
}
void ImFontAtlasBuildRender8bppRectFromString(ImFontAtlas* atlas, int x, int y, int w, int h, const char* in_str, char in_marker_char, unsigned char in_marker_pixel_value)
{
IM_ASSERT(x >= 0 && x + w <= atlas->TexWidth);
IM_ASSERT(y >= 0 && y + h <= atlas->TexHeight);
unsigned char* out_pixel = atlas->TexPixelsAlpha8 + x + (y * atlas->TexWidth);
for (int off_y = 0; off_y < h; off_y++, out_pixel += atlas->TexWidth, in_str += w)
for (int off_x = 0; off_x < w; off_x++)
out_pixel[off_x] = (in_str[off_x] == in_marker_char) ? in_marker_pixel_value : 0x00;
}
void ImFontAtlasBuildRender32bppRectFromString(ImFontAtlas* atlas, int x, int y, int w, int h, const char* in_str, char in_marker_char, unsigned int in_marker_pixel_value)
{
IM_ASSERT(x >= 0 && x + w <= atlas->TexWidth);
IM_ASSERT(y >= 0 && y + h <= atlas->TexHeight);
unsigned int* out_pixel = atlas->TexPixelsRGBA32 + x + (y * atlas->TexWidth);
for (int off_y = 0; off_y < h; off_y++, out_pixel += atlas->TexWidth, in_str += w)
for (int off_x = 0; off_x < w; off_x++)
out_pixel[off_x] = (in_str[off_x] == in_marker_char) ? in_marker_pixel_value : IM_COL32_BLACK_TRANS;
}
static void ImFontAtlasBuildRenderDefaultTexData(ImFontAtlas* atlas)
{
ImFontAtlasCustomRect* r = atlas->GetCustomRectByIndex(atlas->PackIdMouseCursors);
IM_ASSERT(r->IsPacked());
const int w = atlas->TexWidth;
if (!(atlas->Flags & ImFontAtlasFlags_NoMouseCursors))
{
// Render/copy pixels
IM_ASSERT(r->Width == FONT_ATLAS_DEFAULT_TEX_DATA_W * 2 + 1 && r->Height == FONT_ATLAS_DEFAULT_TEX_DATA_H);
const int x_for_white = r->X;
const int x_for_black = r->X + FONT_ATLAS_DEFAULT_TEX_DATA_W + 1;
if (atlas->TexPixelsAlpha8 != NULL)
{
ImFontAtlasBuildRender8bppRectFromString(atlas, x_for_white, r->Y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, '.', 0xFF);
ImFontAtlasBuildRender8bppRectFromString(atlas, x_for_black, r->Y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, 'X', 0xFF);
}
else
{
ImFontAtlasBuildRender32bppRectFromString(atlas, x_for_white, r->Y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, '.', IM_COL32_WHITE);
ImFontAtlasBuildRender32bppRectFromString(atlas, x_for_black, r->Y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, 'X', IM_COL32_WHITE);
}
}
else
{
// Render 4 white pixels
IM_ASSERT(r->Width == 2 && r->Height == 2);
const int offset = (int)r->X + (int)r->Y * w;
if (atlas->TexPixelsAlpha8 != NULL)
{
atlas->TexPixelsAlpha8[offset] = atlas->TexPixelsAlpha8[offset + 1] = atlas->TexPixelsAlpha8[offset + w] = atlas->TexPixelsAlpha8[offset + w + 1] = 0xFF;
}
else
{
atlas->TexPixelsRGBA32[offset] = atlas->TexPixelsRGBA32[offset + 1] = atlas->TexPixelsRGBA32[offset + w] = atlas->TexPixelsRGBA32[offset + w + 1] = IM_COL32_WHITE;
}
}
atlas->TexUvWhitePixel = ImVec2((r->X + 0.5f) * atlas->TexUvScale.x, (r->Y + 0.5f) * atlas->TexUvScale.y);
}
static void ImFontAtlasBuildRenderLinesTexData(ImFontAtlas* atlas)
{
if (atlas->Flags & ImFontAtlasFlags_NoBakedLines)
return;
// This generates a triangular shape in the texture, with the various line widths stacked on top of each other to allow interpolation between them
ImFontAtlasCustomRect* r = atlas->GetCustomRectByIndex(atlas->PackIdLines);
IM_ASSERT(r->IsPacked());
for (unsigned int n = 0; n < IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 1; n++) // +1 because of the zero-width row
{
// Each line consists of at least two empty pixels at the ends, with a line of solid pixels in the middle
unsigned int y = n;
unsigned int line_width = n;
unsigned int pad_left = (r->Width - line_width) / 2;
unsigned int pad_right = r->Width - (pad_left + line_width);
// Write each slice
IM_ASSERT(pad_left + line_width + pad_right == r->Width && y < r->Height); // Make sure we're inside the texture bounds before we start writing pixels
if (atlas->TexPixelsAlpha8 != NULL)
{
unsigned char* write_ptr = &atlas->TexPixelsAlpha8[r->X + ((r->Y + y) * atlas->TexWidth)];
for (unsigned int i = 0; i < pad_left; i++)
*(write_ptr + i) = 0x00;
for (unsigned int i = 0; i < line_width; i++)
*(write_ptr + pad_left + i) = 0xFF;
for (unsigned int i = 0; i < pad_right; i++)
*(write_ptr + pad_left + line_width + i) = 0x00;
}
else
{
unsigned int* write_ptr = &atlas->TexPixelsRGBA32[r->X + ((r->Y + y) * atlas->TexWidth)];
for (unsigned int i = 0; i < pad_left; i++)
*(write_ptr + i) = IM_COL32(255, 255, 255, 0);
for (unsigned int i = 0; i < line_width; i++)
*(write_ptr + pad_left + i) = IM_COL32_WHITE;
for (unsigned int i = 0; i < pad_right; i++)
*(write_ptr + pad_left + line_width + i) = IM_COL32(255, 255, 255, 0);
}
// Calculate UVs for this line
ImVec2 uv0 = ImVec2((float)(r->X + pad_left - 1), (float)(r->Y + y)) * atlas->TexUvScale;
ImVec2 uv1 = ImVec2((float)(r->X + pad_left + line_width + 1), (float)(r->Y + y + 1)) * atlas->TexUvScale;
float half_v = (uv0.y + uv1.y) * 0.5f; // Calculate a constant V in the middle of the row to avoid sampling artifacts
atlas->TexUvLines[n] = ImVec4(uv0.x, half_v, uv1.x, half_v);
}
}
// Note: this is called / shared by both the stb_truetype and the FreeType builder
void ImFontAtlasBuildInit(ImFontAtlas* atlas)
{
// Round font size
// - We started rounding in 1.90 WIP (18991) as our layout system currently doesn't support non-rounded font size well yet.
// - Note that using io.FontGlobalScale or SetWindowFontScale(), with are legacy-ish, partially supported features, can still lead to unrounded sizes.
// - We may support it better later and remove this rounding.
for (ImFontConfig& cfg : atlas->ConfigData)
cfg.SizePixels = ImTrunc(cfg.SizePixels);
// Register texture region for mouse cursors or standard white pixels
if (atlas->PackIdMouseCursors < 0)
{
if (!(atlas->Flags & ImFontAtlasFlags_NoMouseCursors))
atlas->PackIdMouseCursors = atlas->AddCustomRectRegular(FONT_ATLAS_DEFAULT_TEX_DATA_W * 2 + 1, FONT_ATLAS_DEFAULT_TEX_DATA_H);
else
atlas->PackIdMouseCursors = atlas->AddCustomRectRegular(2, 2);
}
// Register texture region for thick lines
// The +2 here is to give space for the end caps, whilst height +1 is to accommodate the fact we have a zero-width row
if (atlas->PackIdLines < 0)
{
if (!(atlas->Flags & ImFontAtlasFlags_NoBakedLines))
atlas->PackIdLines = atlas->AddCustomRectRegular(IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 2, IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 1);
}
}
// This is called/shared by both the stb_truetype and the FreeType builder.
void ImFontAtlasBuildFinish(ImFontAtlas* atlas)
{
// Render into our custom data blocks
IM_ASSERT(atlas->TexPixelsAlpha8 != NULL || atlas->TexPixelsRGBA32 != NULL);
ImFontAtlasBuildRenderDefaultTexData(atlas);
ImFontAtlasBuildRenderLinesTexData(atlas);
// Register custom rectangle glyphs
for (int i = 0; i < atlas->CustomRects.Size; i++)
{
const ImFontAtlasCustomRect* r = &atlas->CustomRects[i];
if (r->Font == NULL || r->GlyphID == 0)
continue;
// Will ignore ImFontConfig settings: GlyphMinAdvanceX, GlyphMinAdvanceY, GlyphExtraSpacing, PixelSnapH
IM_ASSERT(r->Font->ContainerAtlas == atlas);
ImVec2 uv0, uv1;
atlas->CalcCustomRectUV(r, &uv0, &uv1);
r->Font->AddGlyph(NULL, (ImWchar)r->GlyphID, r->GlyphOffset.x, r->GlyphOffset.y, r->GlyphOffset.x + r->Width, r->GlyphOffset.y + r->Height, uv0.x, uv0.y, uv1.x, uv1.y, r->GlyphAdvanceX);
}
// Build all fonts lookup tables
for (ImFont* font : atlas->Fonts)
if (font->DirtyLookupTables)
font->BuildLookupTable();
atlas->TexReady = true;
}
// Retrieve list of range (2 int per range, values are inclusive)
const ImWchar* ImFontAtlas::GetGlyphRangesDefault()
{
static const ImWchar ranges[] =
{
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0,
};
return &ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesGreek()
{
static const ImWchar ranges[] =
{
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0x0370, 0x03FF, // Greek and Coptic
0,
};
return &ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesKorean()
{
static const ImWchar ranges[] =
{
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0x3131, 0x3163, // Korean alphabets
0xAC00, 0xD7A3, // Korean characters
0xFFFD, 0xFFFD, // Invalid
0,
};
return &ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesChineseFull()
{
static const ImWchar ranges[] =
{
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0x2000, 0x206F, // General Punctuation
0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana
0x31F0, 0x31FF, // Katakana Phonetic Extensions
0xFF00, 0xFFEF, // Half-width characters
0xFFFD, 0xFFFD, // Invalid
0x4e00, 0x9FAF, // CJK Ideograms
0,
};
return &ranges[0];
}
static void UnpackAccumulativeOffsetsIntoRanges(int base_codepoint, const short* accumulative_offsets, int accumulative_offsets_count, ImWchar* out_ranges)
{
for (int n = 0; n < accumulative_offsets_count; n++, out_ranges += 2)
{
out_ranges[0] = out_ranges[1] = (ImWchar)(base_codepoint + accumulative_offsets[n]);
base_codepoint += accumulative_offsets[n];
}
out_ranges[0] = 0;
}
//-------------------------------------------------------------------------
// [SECTION] ImFontAtlas glyph ranges helpers
//-------------------------------------------------------------------------
const ImWchar* ImFontAtlas::GetGlyphRangesChineseSimplifiedCommon()
{
// Store 2500 regularly used characters for Simplified Chinese.
// Sourced from https://zh.wiktionary.org/wiki/%E9%99%84%E5%BD%95:%E7%8E%B0%E4%BB%A3%E6%B1%89%E8%AF%AD%E5%B8%B8%E7%94%A8%E5%AD%97%E8%A1%A8
// This table covers 97.97% of all characters used during the month in July, 1987.
// You can use ImFontGlyphRangesBuilder to create your own ranges derived from this, by merging existing ranges or adding new characters.
// (Stored as accumulative offsets from the initial unicode codepoint 0x4E00. This encoding is designed to helps us compact the source code size.)
static const short accumulative_offsets_from_0x4E00[] =
{
0,1,2,4,1,1,1,1,2,1,3,2,1,2,2,1,1,1,1,1,5,2,1,2,3,3,3,2,2,4,1,1,1,2,1,5,2,3,1,2,1,2,1,1,2,1,1,2,2,1,4,1,1,1,1,5,10,1,2,19,2,1,2,1,2,1,2,1,2,
1,5,1,6,3,2,1,2,2,1,1,1,4,8,5,1,1,4,1,1,3,1,2,1,5,1,2,1,1,1,10,1,1,5,2,4,6,1,4,2,2,2,12,2,1,1,6,1,1,1,4,1,1,4,6,5,1,4,2,2,4,10,7,1,1,4,2,4,
2,1,4,3,6,10,12,5,7,2,14,2,9,1,1,6,7,10,4,7,13,1,5,4,8,4,1,1,2,28,5,6,1,1,5,2,5,20,2,2,9,8,11,2,9,17,1,8,6,8,27,4,6,9,20,11,27,6,68,2,2,1,1,
1,2,1,2,2,7,6,11,3,3,1,1,3,1,2,1,1,1,1,1,3,1,1,8,3,4,1,5,7,2,1,4,4,8,4,2,1,2,1,1,4,5,6,3,6,2,12,3,1,3,9,2,4,3,4,1,5,3,3,1,3,7,1,5,1,1,1,1,2,
3,4,5,2,3,2,6,1,1,2,1,7,1,7,3,4,5,15,2,2,1,5,3,22,19,2,1,1,1,1,2,5,1,1,1,6,1,1,12,8,2,9,18,22,4,1,1,5,1,16,1,2,7,10,15,1,1,6,2,4,1,2,4,1,6,
1,1,3,2,4,1,6,4,5,1,2,1,1,2,1,10,3,1,3,2,1,9,3,2,5,7,2,19,4,3,6,1,1,1,1,1,4,3,2,1,1,1,2,5,3,1,1,1,2,2,1,1,2,1,1,2,1,3,1,1,1,3,7,1,4,1,1,2,1,
1,2,1,2,4,4,3,8,1,1,1,2,1,3,5,1,3,1,3,4,6,2,2,14,4,6,6,11,9,1,15,3,1,28,5,2,5,5,3,1,3,4,5,4,6,14,3,2,3,5,21,2,7,20,10,1,2,19,2,4,28,28,2,3,
2,1,14,4,1,26,28,42,12,40,3,52,79,5,14,17,3,2,2,11,3,4,6,3,1,8,2,23,4,5,8,10,4,2,7,3,5,1,1,6,3,1,2,2,2,5,28,1,1,7,7,20,5,3,29,3,17,26,1,8,4,
27,3,6,11,23,5,3,4,6,13,24,16,6,5,10,25,35,7,3,2,3,3,14,3,6,2,6,1,4,2,3,8,2,1,1,3,3,3,4,1,1,13,2,2,4,5,2,1,14,14,1,2,2,1,4,5,2,3,1,14,3,12,
3,17,2,16,5,1,2,1,8,9,3,19,4,2,2,4,17,25,21,20,28,75,1,10,29,103,4,1,2,1,1,4,2,4,1,2,3,24,2,2,2,1,1,2,1,3,8,1,1,1,2,1,1,3,1,1,1,6,1,5,3,1,1,
1,3,4,1,1,5,2,1,5,6,13,9,16,1,1,1,1,3,2,3,2,4,5,2,5,2,2,3,7,13,7,2,2,1,1,1,1,2,3,3,2,1,6,4,9,2,1,14,2,14,2,1,18,3,4,14,4,11,41,15,23,15,23,
176,1,3,4,1,1,1,1,5,3,1,2,3,7,3,1,1,2,1,2,4,4,6,2,4,1,9,7,1,10,5,8,16,29,1,1,2,2,3,1,3,5,2,4,5,4,1,1,2,2,3,3,7,1,6,10,1,17,1,44,4,6,2,1,1,6,
5,4,2,10,1,6,9,2,8,1,24,1,2,13,7,8,8,2,1,4,1,3,1,3,3,5,2,5,10,9,4,9,12,2,1,6,1,10,1,1,7,7,4,10,8,3,1,13,4,3,1,6,1,3,5,2,1,2,17,16,5,2,16,6,
1,4,2,1,3,3,6,8,5,11,11,1,3,3,2,4,6,10,9,5,7,4,7,4,7,1,1,4,2,1,3,6,8,7,1,6,11,5,5,3,24,9,4,2,7,13,5,1,8,82,16,61,1,1,1,4,2,2,16,10,3,8,1,1,
6,4,2,1,3,1,1,1,4,3,8,4,2,2,1,1,1,1,1,6,3,5,1,1,4,6,9,2,1,1,1,2,1,7,2,1,6,1,5,4,4,3,1,8,1,3,3,1,3,2,2,2,2,3,1,6,1,2,1,2,1,3,7,1,8,2,1,2,1,5,
2,5,3,5,10,1,2,1,1,3,2,5,11,3,9,3,5,1,1,5,9,1,2,1,5,7,9,9,8,1,3,3,3,6,8,2,3,2,1,1,32,6,1,2,15,9,3,7,13,1,3,10,13,2,14,1,13,10,2,1,3,10,4,15,
2,15,15,10,1,3,9,6,9,32,25,26,47,7,3,2,3,1,6,3,4,3,2,8,5,4,1,9,4,2,2,19,10,6,2,3,8,1,2,2,4,2,1,9,4,4,4,6,4,8,9,2,3,1,1,1,1,3,5,5,1,3,8,4,6,
2,1,4,12,1,5,3,7,13,2,5,8,1,6,1,2,5,14,6,1,5,2,4,8,15,5,1,23,6,62,2,10,1,1,8,1,2,2,10,4,2,2,9,2,1,1,3,2,3,1,5,3,3,2,1,3,8,1,1,1,11,3,1,1,4,
3,7,1,14,1,2,3,12,5,2,5,1,6,7,5,7,14,11,1,3,1,8,9,12,2,1,11,8,4,4,2,6,10,9,13,1,1,3,1,5,1,3,2,4,4,1,18,2,3,14,11,4,29,4,2,7,1,3,13,9,2,2,5,
3,5,20,7,16,8,5,72,34,6,4,22,12,12,28,45,36,9,7,39,9,191,1,1,1,4,11,8,4,9,2,3,22,1,1,1,1,4,17,1,7,7,1,11,31,10,2,4,8,2,3,2,1,4,2,16,4,32,2,
3,19,13,4,9,1,5,2,14,8,1,1,3,6,19,6,5,1,16,6,2,10,8,5,1,2,3,1,5,5,1,11,6,6,1,3,3,2,6,3,8,1,1,4,10,7,5,7,7,5,8,9,2,1,3,4,1,1,3,1,3,3,2,6,16,
1,4,6,3,1,10,6,1,3,15,2,9,2,10,25,13,9,16,6,2,2,10,11,4,3,9,1,2,6,6,5,4,30,40,1,10,7,12,14,33,6,3,6,7,3,1,3,1,11,14,4,9,5,12,11,49,18,51,31,
140,31,2,2,1,5,1,8,1,10,1,4,4,3,24,1,10,1,3,6,6,16,3,4,5,2,1,4,2,57,10,6,22,2,22,3,7,22,6,10,11,36,18,16,33,36,2,5,5,1,1,1,4,10,1,4,13,2,7,
5,2,9,3,4,1,7,43,3,7,3,9,14,7,9,1,11,1,1,3,7,4,18,13,1,14,1,3,6,10,73,2,2,30,6,1,11,18,19,13,22,3,46,42,37,89,7,3,16,34,2,2,3,9,1,7,1,1,1,2,
2,4,10,7,3,10,3,9,5,28,9,2,6,13,7,3,1,3,10,2,7,2,11,3,6,21,54,85,2,1,4,2,2,1,39,3,21,2,2,5,1,1,1,4,1,1,3,4,15,1,3,2,4,4,2,3,8,2,20,1,8,7,13,
4,1,26,6,2,9,34,4,21,52,10,4,4,1,5,12,2,11,1,7,2,30,12,44,2,30,1,1,3,6,16,9,17,39,82,2,2,24,7,1,7,3,16,9,14,44,2,1,2,1,2,3,5,2,4,1,6,7,5,3,
2,6,1,11,5,11,2,1,18,19,8,1,3,24,29,2,1,3,5,2,2,1,13,6,5,1,46,11,3,5,1,1,5,8,2,10,6,12,6,3,7,11,2,4,16,13,2,5,1,1,2,2,5,2,28,5,2,23,10,8,4,
4,22,39,95,38,8,14,9,5,1,13,5,4,3,13,12,11,1,9,1,27,37,2,5,4,4,63,211,95,2,2,2,1,3,5,2,1,1,2,2,1,1,1,3,2,4,1,2,1,1,5,2,2,1,1,2,3,1,3,1,1,1,
3,1,4,2,1,3,6,1,1,3,7,15,5,3,2,5,3,9,11,4,2,22,1,6,3,8,7,1,4,28,4,16,3,3,25,4,4,27,27,1,4,1,2,2,7,1,3,5,2,28,8,2,14,1,8,6,16,25,3,3,3,14,3,
3,1,1,2,1,4,6,3,8,4,1,1,1,2,3,6,10,6,2,3,18,3,2,5,5,4,3,1,5,2,5,4,23,7,6,12,6,4,17,11,9,5,1,1,10,5,12,1,1,11,26,33,7,3,6,1,17,7,1,5,12,1,11,
2,4,1,8,14,17,23,1,2,1,7,8,16,11,9,6,5,2,6,4,16,2,8,14,1,11,8,9,1,1,1,9,25,4,11,19,7,2,15,2,12,8,52,7,5,19,2,16,4,36,8,1,16,8,24,26,4,6,2,9,
5,4,36,3,28,12,25,15,37,27,17,12,59,38,5,32,127,1,2,9,17,14,4,1,2,1,1,8,11,50,4,14,2,19,16,4,17,5,4,5,26,12,45,2,23,45,104,30,12,8,3,10,2,2,
3,3,1,4,20,7,2,9,6,15,2,20,1,3,16,4,11,15,6,134,2,5,59,1,2,2,2,1,9,17,3,26,137,10,211,59,1,2,4,1,4,1,1,1,2,6,2,3,1,1,2,3,2,3,1,3,4,4,2,3,3,
1,4,3,1,7,2,2,3,1,2,1,3,3,3,2,2,3,2,1,3,14,6,1,3,2,9,6,15,27,9,34,145,1,1,2,1,1,1,1,2,1,1,1,1,2,2,2,3,1,2,1,1,1,2,3,5,8,3,5,2,4,1,3,2,2,2,12,
4,1,1,1,10,4,5,1,20,4,16,1,15,9,5,12,2,9,2,5,4,2,26,19,7,1,26,4,30,12,15,42,1,6,8,172,1,1,4,2,1,1,11,2,2,4,2,1,2,1,10,8,1,2,1,4,5,1,2,5,1,8,
4,1,3,4,2,1,6,2,1,3,4,1,2,1,1,1,1,12,5,7,2,4,3,1,1,1,3,3,6,1,2,2,3,3,3,2,1,2,12,14,11,6,6,4,12,2,8,1,7,10,1,35,7,4,13,15,4,3,23,21,28,52,5,
26,5,6,1,7,10,2,7,53,3,2,1,1,1,2,163,532,1,10,11,1,3,3,4,8,2,8,6,2,2,23,22,4,2,2,4,2,1,3,1,3,3,5,9,8,2,1,2,8,1,10,2,12,21,20,15,105,2,3,1,1,
3,2,3,1,1,2,5,1,4,15,11,19,1,1,1,1,5,4,5,1,1,2,5,3,5,12,1,2,5,1,11,1,1,15,9,1,4,5,3,26,8,2,1,3,1,1,15,19,2,12,1,2,5,2,7,2,19,2,20,6,26,7,5,
2,2,7,34,21,13,70,2,128,1,1,2,1,1,2,1,1,3,2,2,2,15,1,4,1,3,4,42,10,6,1,49,85,8,1,2,1,1,4,4,2,3,6,1,5,7,4,3,211,4,1,2,1,2,5,1,2,4,2,2,6,5,6,
10,3,4,48,100,6,2,16,296,5,27,387,2,2,3,7,16,8,5,38,15,39,21,9,10,3,7,59,13,27,21,47,5,21,6
};
static ImWchar base_ranges[] = // not zero-terminated
{
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0x2000, 0x206F, // General Punctuation
0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana
0x31F0, 0x31FF, // Katakana Phonetic Extensions
0xFF00, 0xFFEF, // Half-width characters
0xFFFD, 0xFFFD // Invalid
};
static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(accumulative_offsets_from_0x4E00) * 2 + 1] = { 0 };
if (!full_ranges[0])
{
memcpy(full_ranges, base_ranges, sizeof(base_ranges));
UnpackAccumulativeOffsetsIntoRanges(0x4E00, accumulative_offsets_from_0x4E00, IM_ARRAYSIZE(accumulative_offsets_from_0x4E00), full_ranges + IM_ARRAYSIZE(base_ranges));
}
return &full_ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesJapanese()
{
// 2999 ideograms code points for Japanese
// - 2136 Joyo (meaning "for regular use" or "for common use") Kanji code points
// - 863 Jinmeiyo (meaning "for personal name") Kanji code points
// - Sourced from official information provided by the government agencies of Japan:
// - List of Joyo Kanji by the Agency for Cultural Affairs
// - https://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/kijun/naikaku/kanji/
// - List of Jinmeiyo Kanji by the Ministry of Justice
// - http://www.moj.go.jp/MINJI/minji86.html
// - Available under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0).
// - https://creativecommons.org/licenses/by/4.0/legalcode
// - You can generate this code by the script at:
// - https://github.com/vaiorabbit/everyday_use_kanji
// - References:
// - List of Joyo Kanji
// - (Wikipedia) https://en.wikipedia.org/wiki/List_of_j%C5%8Dy%C5%8D_kanji
// - List of Jinmeiyo Kanji
// - (Wikipedia) https://en.wikipedia.org/wiki/Jinmeiy%C5%8D_kanji
// - Missing 1 Joyo Kanji: U+20B9F (Kun'yomi: Shikaru, On'yomi: Shitsu,shichi), see https://github.com/ocornut/imgui/pull/3627 for details.
// You can use ImFontGlyphRangesBuilder to create your own ranges derived from this, by merging existing ranges or adding new characters.
// (Stored as accumulative offsets from the initial unicode codepoint 0x4E00. This encoding is designed to helps us compact the source code size.)
static const short accumulative_offsets_from_0x4E00[] =
{
0,1,2,4,1,1,1,1,2,1,3,3,2,2,1,5,3,5,7,5,6,1,2,1,7,2,6,3,1,8,1,1,4,1,1,18,2,11,2,6,2,1,2,1,5,1,2,1,3,1,2,1,2,3,3,1,1,2,3,1,1,1,12,7,9,1,4,5,1,
1,2,1,10,1,1,9,2,2,4,5,6,9,3,1,1,1,1,9,3,18,5,2,2,2,2,1,6,3,7,1,1,1,1,2,2,4,2,1,23,2,10,4,3,5,2,4,10,2,4,13,1,6,1,9,3,1,1,6,6,7,6,3,1,2,11,3,
2,2,3,2,15,2,2,5,4,3,6,4,1,2,5,2,12,16,6,13,9,13,2,1,1,7,16,4,7,1,19,1,5,1,2,2,7,7,8,2,6,5,4,9,18,7,4,5,9,13,11,8,15,2,1,1,1,2,1,2,2,1,2,2,8,
2,9,3,3,1,1,4,4,1,1,1,4,9,1,4,3,5,5,2,7,5,3,4,8,2,1,13,2,3,3,1,14,1,1,4,5,1,3,6,1,5,2,1,1,3,3,3,3,1,1,2,7,6,6,7,1,4,7,6,1,1,1,1,1,12,3,3,9,5,
2,6,1,5,6,1,2,3,18,2,4,14,4,1,3,6,1,1,6,3,5,5,3,2,2,2,2,12,3,1,4,2,3,2,3,11,1,7,4,1,2,1,3,17,1,9,1,24,1,1,4,2,2,4,1,2,7,1,1,1,3,1,2,2,4,15,1,
1,2,1,1,2,1,5,2,5,20,2,5,9,1,10,8,7,6,1,1,1,1,1,1,6,2,1,2,8,1,1,1,1,5,1,1,3,1,1,1,1,3,1,1,12,4,1,3,1,1,1,1,1,10,3,1,7,5,13,1,2,3,4,6,1,1,30,
2,9,9,1,15,38,11,3,1,8,24,7,1,9,8,10,2,1,9,31,2,13,6,2,9,4,49,5,2,15,2,1,10,2,1,1,1,2,2,6,15,30,35,3,14,18,8,1,16,10,28,12,19,45,38,1,3,2,3,
13,2,1,7,3,6,5,3,4,3,1,5,7,8,1,5,3,18,5,3,6,1,21,4,24,9,24,40,3,14,3,21,3,2,1,2,4,2,3,1,15,15,6,5,1,1,3,1,5,6,1,9,7,3,3,2,1,4,3,8,21,5,16,4,
5,2,10,11,11,3,6,3,2,9,3,6,13,1,2,1,1,1,1,11,12,6,6,1,4,2,6,5,2,1,1,3,3,6,13,3,1,1,5,1,2,3,3,14,2,1,2,2,2,5,1,9,5,1,1,6,12,3,12,3,4,13,2,14,
2,8,1,17,5,1,16,4,2,2,21,8,9,6,23,20,12,25,19,9,38,8,3,21,40,25,33,13,4,3,1,4,1,2,4,1,2,5,26,2,1,1,2,1,3,6,2,1,1,1,1,1,1,2,3,1,1,1,9,2,3,1,1,
1,3,6,3,2,1,1,6,6,1,8,2,2,2,1,4,1,2,3,2,7,3,2,4,1,2,1,2,2,1,1,1,1,1,3,1,2,5,4,10,9,4,9,1,1,1,1,1,1,5,3,2,1,6,4,9,6,1,10,2,31,17,8,3,7,5,40,1,
7,7,1,6,5,2,10,7,8,4,15,39,25,6,28,47,18,10,7,1,3,1,1,2,1,1,1,3,3,3,1,1,1,3,4,2,1,4,1,3,6,10,7,8,6,2,2,1,3,3,2,5,8,7,9,12,2,15,1,1,4,1,2,1,1,
1,3,2,1,3,3,5,6,2,3,2,10,1,4,2,8,1,1,1,11,6,1,21,4,16,3,1,3,1,4,2,3,6,5,1,3,1,1,3,3,4,6,1,1,10,4,2,7,10,4,7,4,2,9,4,3,1,1,1,4,1,8,3,4,1,3,1,
6,1,4,2,1,4,7,2,1,8,1,4,5,1,1,2,2,4,6,2,7,1,10,1,1,3,4,11,10,8,21,4,6,1,3,5,2,1,2,28,5,5,2,3,13,1,2,3,1,4,2,1,5,20,3,8,11,1,3,3,3,1,8,10,9,2,
10,9,2,3,1,1,2,4,1,8,3,6,1,7,8,6,11,1,4,29,8,4,3,1,2,7,13,1,4,1,6,2,6,12,12,2,20,3,2,3,6,4,8,9,2,7,34,5,1,18,6,1,1,4,4,5,7,9,1,2,2,4,3,4,1,7,
2,2,2,6,2,3,25,5,3,6,1,4,6,7,4,2,1,4,2,13,6,4,4,3,1,5,3,4,4,3,2,1,1,4,1,2,1,1,3,1,11,1,6,3,1,7,3,6,2,8,8,6,9,3,4,11,3,2,10,12,2,5,11,1,6,4,5,
3,1,8,5,4,6,6,3,5,1,1,3,2,1,2,2,6,17,12,1,10,1,6,12,1,6,6,19,9,6,16,1,13,4,4,15,7,17,6,11,9,15,12,6,7,2,1,2,2,15,9,3,21,4,6,49,18,7,3,2,3,1,
6,8,2,2,6,2,9,1,3,6,4,4,1,2,16,2,5,2,1,6,2,3,5,3,1,2,5,1,2,1,9,3,1,8,6,4,8,11,3,1,1,1,1,3,1,13,8,4,1,3,2,2,1,4,1,11,1,5,2,1,5,2,5,8,6,1,1,7,
4,3,8,3,2,7,2,1,5,1,5,2,4,7,6,2,8,5,1,11,4,5,3,6,18,1,2,13,3,3,1,21,1,1,4,1,4,1,1,1,8,1,2,2,7,1,2,4,2,2,9,2,1,1,1,4,3,6,3,12,5,1,1,1,5,6,3,2,
4,8,2,2,4,2,7,1,8,9,5,2,3,2,1,3,2,13,7,14,6,5,1,1,2,1,4,2,23,2,1,1,6,3,1,4,1,15,3,1,7,3,9,14,1,3,1,4,1,1,5,8,1,3,8,3,8,15,11,4,14,4,4,2,5,5,
1,7,1,6,14,7,7,8,5,15,4,8,6,5,6,2,1,13,1,20,15,11,9,2,5,6,2,11,2,6,2,5,1,5,8,4,13,19,25,4,1,1,11,1,34,2,5,9,14,6,2,2,6,1,1,14,1,3,14,13,1,6,
12,21,14,14,6,32,17,8,32,9,28,1,2,4,11,8,3,1,14,2,5,15,1,1,1,1,3,6,4,1,3,4,11,3,1,1,11,30,1,5,1,4,1,5,8,1,1,3,2,4,3,17,35,2,6,12,17,3,1,6,2,
1,1,12,2,7,3,3,2,1,16,2,8,3,6,5,4,7,3,3,8,1,9,8,5,1,2,1,3,2,8,1,2,9,12,1,1,2,3,8,3,24,12,4,3,7,5,8,3,3,3,3,3,3,1,23,10,3,1,2,2,6,3,1,16,1,16,
22,3,10,4,11,6,9,7,7,3,6,2,2,2,4,10,2,1,1,2,8,7,1,6,4,1,3,3,3,5,10,12,12,2,3,12,8,15,1,1,16,6,6,1,5,9,11,4,11,4,2,6,12,1,17,5,13,1,4,9,5,1,11,
2,1,8,1,5,7,28,8,3,5,10,2,17,3,38,22,1,2,18,12,10,4,38,18,1,4,44,19,4,1,8,4,1,12,1,4,31,12,1,14,7,75,7,5,10,6,6,13,3,2,11,11,3,2,5,28,15,6,18,
18,5,6,4,3,16,1,7,18,7,36,3,5,3,1,7,1,9,1,10,7,2,4,2,6,2,9,7,4,3,32,12,3,7,10,2,23,16,3,1,12,3,31,4,11,1,3,8,9,5,1,30,15,6,12,3,2,2,11,19,9,
14,2,6,2,3,19,13,17,5,3,3,25,3,14,1,1,1,36,1,3,2,19,3,13,36,9,13,31,6,4,16,34,2,5,4,2,3,3,5,1,1,1,4,3,1,17,3,2,3,5,3,1,3,2,3,5,6,3,12,11,1,3,
1,2,26,7,12,7,2,14,3,3,7,7,11,25,25,28,16,4,36,1,2,1,6,2,1,9,3,27,17,4,3,4,13,4,1,3,2,2,1,10,4,2,4,6,3,8,2,1,18,1,1,24,2,2,4,33,2,3,63,7,1,6,
40,7,3,4,4,2,4,15,18,1,16,1,1,11,2,41,14,1,3,18,13,3,2,4,16,2,17,7,15,24,7,18,13,44,2,2,3,6,1,1,7,5,1,7,1,4,3,3,5,10,8,2,3,1,8,1,1,27,4,2,1,
12,1,2,1,10,6,1,6,7,5,2,3,7,11,5,11,3,6,6,2,3,15,4,9,1,1,2,1,2,11,2,8,12,8,5,4,2,3,1,5,2,2,1,14,1,12,11,4,1,11,17,17,4,3,2,5,5,7,3,1,5,9,9,8,
2,5,6,6,13,13,2,1,2,6,1,2,2,49,4,9,1,2,10,16,7,8,4,3,2,23,4,58,3,29,1,14,19,19,11,11,2,7,5,1,3,4,6,2,18,5,12,12,17,17,3,3,2,4,1,6,2,3,4,3,1,
1,1,1,5,1,1,9,1,3,1,3,6,1,8,1,1,2,6,4,14,3,1,4,11,4,1,3,32,1,2,4,13,4,1,2,4,2,1,3,1,11,1,4,2,1,4,4,6,3,5,1,6,5,7,6,3,23,3,5,3,5,3,3,13,3,9,10,
1,12,10,2,3,18,13,7,160,52,4,2,2,3,2,14,5,4,12,4,6,4,1,20,4,11,6,2,12,27,1,4,1,2,2,7,4,5,2,28,3,7,25,8,3,19,3,6,10,2,2,1,10,2,5,4,1,3,4,1,5,
3,2,6,9,3,6,2,16,3,3,16,4,5,5,3,2,1,2,16,15,8,2,6,21,2,4,1,22,5,8,1,1,21,11,2,1,11,11,19,13,12,4,2,3,2,3,6,1,8,11,1,4,2,9,5,2,1,11,2,9,1,1,2,
14,31,9,3,4,21,14,4,8,1,7,2,2,2,5,1,4,20,3,3,4,10,1,11,9,8,2,1,4,5,14,12,14,2,17,9,6,31,4,14,1,20,13,26,5,2,7,3,6,13,2,4,2,19,6,2,2,18,9,3,5,
12,12,14,4,6,2,3,6,9,5,22,4,5,25,6,4,8,5,2,6,27,2,35,2,16,3,7,8,8,6,6,5,9,17,2,20,6,19,2,13,3,1,1,1,4,17,12,2,14,7,1,4,18,12,38,33,2,10,1,1,
2,13,14,17,11,50,6,33,20,26,74,16,23,45,50,13,38,33,6,6,7,4,4,2,1,3,2,5,8,7,8,9,3,11,21,9,13,1,3,10,6,7,1,2,2,18,5,5,1,9,9,2,68,9,19,13,2,5,
1,4,4,7,4,13,3,9,10,21,17,3,26,2,1,5,2,4,5,4,1,7,4,7,3,4,2,1,6,1,1,20,4,1,9,2,2,1,3,3,2,3,2,1,1,1,20,2,3,1,6,2,3,6,2,4,8,1,3,2,10,3,5,3,4,4,
3,4,16,1,6,1,10,2,4,2,1,1,2,10,11,2,2,3,1,24,31,4,10,10,2,5,12,16,164,15,4,16,7,9,15,19,17,1,2,1,1,5,1,1,1,1,1,3,1,4,3,1,3,1,3,1,2,1,1,3,3,7,
2,8,1,2,2,2,1,3,4,3,7,8,12,92,2,10,3,1,3,14,5,25,16,42,4,7,7,4,2,21,5,27,26,27,21,25,30,31,2,1,5,13,3,22,5,6,6,11,9,12,1,5,9,7,5,5,22,60,3,5,
13,1,1,8,1,1,3,3,2,1,9,3,3,18,4,1,2,3,7,6,3,1,2,3,9,1,3,1,3,2,1,3,1,1,1,2,1,11,3,1,6,9,1,3,2,3,1,2,1,5,1,1,4,3,4,1,2,2,4,4,1,7,2,1,2,2,3,5,13,
18,3,4,14,9,9,4,16,3,7,5,8,2,6,48,28,3,1,1,4,2,14,8,2,9,2,1,15,2,4,3,2,10,16,12,8,7,1,1,3,1,1,1,2,7,4,1,6,4,38,39,16,23,7,15,15,3,2,12,7,21,
37,27,6,5,4,8,2,10,8,8,6,5,1,2,1,3,24,1,16,17,9,23,10,17,6,1,51,55,44,13,294,9,3,6,2,4,2,2,15,1,1,1,13,21,17,68,14,8,9,4,1,4,9,3,11,7,1,1,1,
5,6,3,2,1,1,1,2,3,8,1,2,2,4,1,5,5,2,1,4,3,7,13,4,1,4,1,3,1,1,1,5,5,10,1,6,1,5,2,1,5,2,4,1,4,5,7,3,18,2,9,11,32,4,3,3,2,4,7,11,16,9,11,8,13,38,
32,8,4,2,1,1,2,1,2,4,4,1,1,1,4,1,21,3,11,1,16,1,1,6,1,3,2,4,9,8,57,7,44,1,3,3,13,3,10,1,1,7,5,2,7,21,47,63,3,15,4,7,1,16,1,1,2,8,2,3,42,15,4,
1,29,7,22,10,3,78,16,12,20,18,4,67,11,5,1,3,15,6,21,31,32,27,18,13,71,35,5,142,4,10,1,2,50,19,33,16,35,37,16,19,27,7,1,133,19,1,4,8,7,20,1,4,
4,1,10,3,1,6,1,2,51,5,40,15,24,43,22928,11,1,13,154,70,3,1,1,7,4,10,1,2,1,1,2,1,2,1,2,2,1,1,2,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,
3,2,1,1,1,1,2,1,1,
};
static ImWchar base_ranges[] = // not zero-terminated
{
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana
0x31F0, 0x31FF, // Katakana Phonetic Extensions
0xFF00, 0xFFEF, // Half-width characters
0xFFFD, 0xFFFD // Invalid
};
static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(accumulative_offsets_from_0x4E00)*2 + 1] = { 0 };
if (!full_ranges[0])
{
memcpy(full_ranges, base_ranges, sizeof(base_ranges));
UnpackAccumulativeOffsetsIntoRanges(0x4E00, accumulative_offsets_from_0x4E00, IM_ARRAYSIZE(accumulative_offsets_from_0x4E00), full_ranges + IM_ARRAYSIZE(base_ranges));
}
return &full_ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesCyrillic()
{
static const ImWchar ranges[] =
{
0x0020, 0x00FF, // Basic Latin + Latin Supplement
0x0400, 0x052F, // Cyrillic + Cyrillic Supplement
0x2DE0, 0x2DFF, // Cyrillic Extended-A
0xA640, 0xA69F, // Cyrillic Extended-B
0,
};
return &ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesThai()
{
static const ImWchar ranges[] =
{
0x0020, 0x00FF, // Basic Latin
0x2010, 0x205E, // Punctuations
0x0E00, 0x0E7F, // Thai
0,
};
return &ranges[0];
}
const ImWchar* ImFontAtlas::GetGlyphRangesVietnamese()
{
static const ImWchar ranges[] =
{
0x0020, 0x00FF, // Basic Latin
0x0102, 0x0103,
0x0110, 0x0111,
0x0128, 0x0129,
0x0168, 0x0169,
0x01A0, 0x01A1,
0x01AF, 0x01B0,
0x1EA0, 0x1EF9,
0,
};
return &ranges[0];
}
//-----------------------------------------------------------------------------
// [SECTION] ImFontGlyphRangesBuilder
//-----------------------------------------------------------------------------
void ImFontGlyphRangesBuilder::AddText(const char* text, const char* text_end)
{
while (text_end ? (text < text_end) : *text)
{
unsigned int c = 0;
int c_len = ImTextCharFromUtf8(&c, text, text_end);
text += c_len;
if (c_len == 0)
break;
AddChar((ImWchar)c);
}
}
void ImFontGlyphRangesBuilder::AddRanges(const ImWchar* ranges)
{
for (; ranges[0]; ranges += 2)
for (unsigned int c = ranges[0]; c <= ranges[1] && c <= IM_UNICODE_CODEPOINT_MAX; c++) //-V560
AddChar((ImWchar)c);
}
void ImFontGlyphRangesBuilder::BuildRanges(ImVector<ImWchar>* out_ranges)
{
const int max_codepoint = IM_UNICODE_CODEPOINT_MAX;
for (int n = 0; n <= max_codepoint; n++)
if (GetBit(n))
{
out_ranges->push_back((ImWchar)n);
while (n < max_codepoint && GetBit(n + 1))
n++;
out_ranges->push_back((ImWchar)n);
}
out_ranges->push_back(0);
}
//-----------------------------------------------------------------------------
// [SECTION] ImFont
//-----------------------------------------------------------------------------
ImFont::ImFont()
{
FontSize = 0.0f;
FallbackAdvanceX = 0.0f;
FallbackChar = (ImWchar)-1;
EllipsisChar = (ImWchar)-1;
EllipsisWidth = EllipsisCharStep = 0.0f;
EllipsisCharCount = 0;
FallbackGlyph = NULL;
ContainerAtlas = NULL;
ConfigData = NULL;
ConfigDataCount = 0;
DirtyLookupTables = false;
Scale = 1.0f;
Ascent = Descent = 0.0f;
MetricsTotalSurface = 0;
memset(Used4kPagesMap, 0, sizeof(Used4kPagesMap));
}
ImFont::~ImFont()
{
ClearOutputData();
}
void ImFont::ClearOutputData()
{
FontSize = 0.0f;
FallbackAdvanceX = 0.0f;
Glyphs.clear();
IndexAdvanceX.clear();
IndexLookup.clear();
FallbackGlyph = NULL;
ContainerAtlas = NULL;
DirtyLookupTables = true;
Ascent = Descent = 0.0f;
MetricsTotalSurface = 0;
}
static ImWchar FindFirstExistingGlyph(ImFont* font, const ImWchar* candidate_chars, int candidate_chars_count)
{
for (int n = 0; n < candidate_chars_count; n++)
if (font->FindGlyphNoFallback(candidate_chars[n]) != NULL)
return candidate_chars[n];
return (ImWchar)-1;
}
void ImFont::BuildLookupTable()
{
int max_codepoint = 0;
for (int i = 0; i != Glyphs.Size; i++)
max_codepoint = ImMax(max_codepoint, (int)Glyphs[i].Codepoint);
// Build lookup table
IM_ASSERT(Glyphs.Size > 0 && "Font has not loaded glyph!");
IM_ASSERT(Glyphs.Size < 0xFFFF); // -1 is reserved
IndexAdvanceX.clear();
IndexLookup.clear();
DirtyLookupTables = false;
memset(Used4kPagesMap, 0, sizeof(Used4kPagesMap));
GrowIndex(max_codepoint + 1);
for (int i = 0; i < Glyphs.Size; i++)
{
int codepoint = (int)Glyphs[i].Codepoint;
IndexAdvanceX[codepoint] = Glyphs[i].AdvanceX;
IndexLookup[codepoint] = (ImWchar)i;
// Mark 4K page as used
const int page_n = codepoint / 4096;
Used4kPagesMap[page_n >> 3] |= 1 << (page_n & 7);
}
// Create a glyph to handle TAB
// FIXME: Needs proper TAB handling but it needs to be contextualized (or we could arbitrary say that each string starts at "column 0" ?)
if (FindGlyph((ImWchar)' '))
{
if (Glyphs.back().Codepoint != '\t') // So we can call this function multiple times (FIXME: Flaky)
Glyphs.resize(Glyphs.Size + 1);
ImFontGlyph& tab_glyph = Glyphs.back();
tab_glyph = *FindGlyph((ImWchar)' ');
tab_glyph.Codepoint = '\t';
tab_glyph.AdvanceX *= IM_TABSIZE;
IndexAdvanceX[(int)tab_glyph.Codepoint] = (float)tab_glyph.AdvanceX;
IndexLookup[(int)tab_glyph.Codepoint] = (ImWchar)(Glyphs.Size - 1);
}
// Mark special glyphs as not visible (note that AddGlyph already mark as non-visible glyphs with zero-size polygons)
SetGlyphVisible((ImWchar)' ', false);
SetGlyphVisible((ImWchar)'\t', false);
// Setup Fallback character
const ImWchar fallback_chars[] = { (ImWchar)IM_UNICODE_CODEPOINT_INVALID, (ImWchar)'?', (ImWchar)' ' };
FallbackGlyph = FindGlyphNoFallback(FallbackChar);
if (FallbackGlyph == NULL)
{
FallbackChar = FindFirstExistingGlyph(this, fallback_chars, IM_ARRAYSIZE(fallback_chars));
FallbackGlyph = FindGlyphNoFallback(FallbackChar);
if (FallbackGlyph == NULL)
{
FallbackGlyph = &Glyphs.back();
FallbackChar = (ImWchar)FallbackGlyph->Codepoint;
}
}
FallbackAdvanceX = FallbackGlyph->AdvanceX;
for (int i = 0; i < max_codepoint + 1; i++)
if (IndexAdvanceX[i] < 0.0f)
IndexAdvanceX[i] = FallbackAdvanceX;
// Setup Ellipsis character. It is required for rendering elided text. We prefer using U+2026 (horizontal ellipsis).
// However some old fonts may contain ellipsis at U+0085. Here we auto-detect most suitable ellipsis character.
// FIXME: Note that 0x2026 is rarely included in our font ranges. Because of this we are more likely to use three individual dots.
const ImWchar ellipsis_chars[] = { (ImWchar)0x2026, (ImWchar)0x0085 };
const ImWchar dots_chars[] = { (ImWchar)'.', (ImWchar)0xFF0E };
if (EllipsisChar == (ImWchar)-1)
EllipsisChar = FindFirstExistingGlyph(this, ellipsis_chars, IM_ARRAYSIZE(ellipsis_chars));
const ImWchar dot_char = FindFirstExistingGlyph(this, dots_chars, IM_ARRAYSIZE(dots_chars));
if (EllipsisChar != (ImWchar)-1)
{
EllipsisCharCount = 1;
EllipsisWidth = EllipsisCharStep = FindGlyph(EllipsisChar)->X1;
}
else if (dot_char != (ImWchar)-1)
{
const ImFontGlyph* glyph = FindGlyph(dot_char);
EllipsisChar = dot_char;
EllipsisCharCount = 3;
EllipsisCharStep = (glyph->X1 - glyph->X0) + 1.0f;
EllipsisWidth = EllipsisCharStep * 3.0f - 1.0f;
}
}
// API is designed this way to avoid exposing the 4K page size
// e.g. use with IsGlyphRangeUnused(0, 255)
bool ImFont::IsGlyphRangeUnused(unsigned int c_begin, unsigned int c_last)
{
unsigned int page_begin = (c_begin / 4096);
unsigned int page_last = (c_last / 4096);
for (unsigned int page_n = page_begin; page_n <= page_last; page_n++)
if ((page_n >> 3) < sizeof(Used4kPagesMap))
if (Used4kPagesMap[page_n >> 3] & (1 << (page_n & 7)))
return false;
return true;
}
void ImFont::SetGlyphVisible(ImWchar c, bool visible)
{
if (ImFontGlyph* glyph = (ImFontGlyph*)(void*)FindGlyph((ImWchar)c))
glyph->Visible = visible ? 1 : 0;
}
void ImFont::GrowIndex(int new_size)
{
IM_ASSERT(IndexAdvanceX.Size == IndexLookup.Size);
if (new_size <= IndexLookup.Size)
return;
IndexAdvanceX.resize(new_size, -1.0f);
IndexLookup.resize(new_size, (ImWchar)-1);
}
// x0/y0/x1/y1 are offset from the character upper-left layout position, in pixels. Therefore x0/y0 are often fairly close to zero.
// Not to be mistaken with texture coordinates, which are held by u0/v0/u1/v1 in normalized format (0.0..1.0 on each texture axis).
// 'cfg' is not necessarily == 'this->ConfigData' because multiple source fonts+configs can be used to build one target font.
void ImFont::AddGlyph(const ImFontConfig* cfg, ImWchar codepoint, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float advance_x)
{
if (cfg != NULL)
{
// Clamp & recenter if needed
const float advance_x_original = advance_x;
advance_x = ImClamp(advance_x, cfg->GlyphMinAdvanceX, cfg->GlyphMaxAdvanceX);
if (advance_x != advance_x_original)
{
float char_off_x = cfg->PixelSnapH ? ImTrunc((advance_x - advance_x_original) * 0.5f) : (advance_x - advance_x_original) * 0.5f;
x0 += char_off_x;
x1 += char_off_x;
}
// Snap to pixel
if (cfg->PixelSnapH)
advance_x = IM_ROUND(advance_x);
// Bake spacing
advance_x += cfg->GlyphExtraSpacing.x;
}
Glyphs.resize(Glyphs.Size + 1);
ImFontGlyph& glyph = Glyphs.back();
glyph.Codepoint = (unsigned int)codepoint;
glyph.Visible = (x0 != x1) && (y0 != y1);
glyph.Colored = false;
glyph.X0 = x0;
glyph.Y0 = y0;
glyph.X1 = x1;
glyph.Y1 = y1;
glyph.U0 = u0;
glyph.V0 = v0;
glyph.U1 = u1;
glyph.V1 = v1;
glyph.AdvanceX = advance_x;
// Compute rough surface usage metrics (+1 to account for average padding, +0.99 to round)
// We use (U1-U0)*TexWidth instead of X1-X0 to account for oversampling.
float pad = ContainerAtlas->TexGlyphPadding + 0.99f;
DirtyLookupTables = true;
MetricsTotalSurface += (int)((glyph.U1 - glyph.U0) * ContainerAtlas->TexWidth + pad) * (int)((glyph.V1 - glyph.V0) * ContainerAtlas->TexHeight + pad);
}
void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)
{
IM_ASSERT(IndexLookup.Size > 0); // Currently this can only be called AFTER the font has been built, aka after calling ImFontAtlas::GetTexDataAs*() function.
unsigned int index_size = (unsigned int)IndexLookup.Size;
if (dst < index_size && IndexLookup.Data[dst] == (ImWchar)-1 && !overwrite_dst) // 'dst' already exists
return;
if (src >= index_size && dst >= index_size) // both 'dst' and 'src' don't exist -> no-op
return;
GrowIndex(dst + 1);
IndexLookup[dst] = (src < index_size) ? IndexLookup.Data[src] : (ImWchar)-1;
IndexAdvanceX[dst] = (src < index_size) ? IndexAdvanceX.Data[src] : 1.0f;
}
const ImFontGlyph* ImFont::FindGlyph(ImWchar c) const
{
if (c >= (size_t)IndexLookup.Size)
return FallbackGlyph;
const ImWchar i = IndexLookup.Data[c];
if (i == (ImWchar)-1)
return FallbackGlyph;
return &Glyphs.Data[i];
}
const ImFontGlyph* ImFont::FindGlyphNoFallback(ImWchar c) const
{
if (c >= (size_t)IndexLookup.Size)
return NULL;
const ImWchar i = IndexLookup.Data[c];
if (i == (ImWchar)-1)
return NULL;
return &Glyphs.Data[i];
}
// Wrapping skips upcoming blanks
static inline const char* CalcWordWrapNextLineStartA(const char* text, const char* text_end)
{
while (text < text_end && ImCharIsBlankA(*text))
text++;
if (*text == '\n')
text++;
return text;
}
// Simple word-wrapping for English, not full-featured. Please submit failing cases!
// This will return the next location to wrap from. If no wrapping if necessary, this will fast-forward to e.g. text_end.
// FIXME: Much possible improvements (don't cut things like "word !", "word!!!" but cut within "word,,,,", more sensible support for punctuations, support for Unicode punctuations, etc.)
const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const
{
// For references, possible wrap point marked with ^
// "aaa bbb, ccc,ddd. eee fff. ggg!"
// ^ ^ ^ ^ ^__ ^ ^
// List of hardcoded separators: .,;!?'"
// Skip extra blanks after a line returns (that includes not counting them in width computation)
// e.g. "Hello world" --> "Hello" "World"
// Cut words that cannot possibly fit within one line.
// e.g.: "The tropical fish" with ~5 characters worth of width --> "The tr" "opical" "fish"
float line_width = 0.0f;
float word_width = 0.0f;
float blank_width = 0.0f;
wrap_width /= scale; // We work with unscaled widths to avoid scaling every characters
const char* word_end = text;
const char* prev_word_end = NULL;
bool inside_word = true;
const char* s = text;
IM_ASSERT(text_end != NULL);
while (s < text_end)
{
unsigned int c = (unsigned int)*s;
const char* next_s;
if (c < 0x80)
next_s = s + 1;
else
next_s = s + ImTextCharFromUtf8(&c, s, text_end);
if (c < 32)
{
if (c == '\n')
{
line_width = word_width = blank_width = 0.0f;
inside_word = true;
s = next_s;
continue;
}
if (c == '\r')
{
s = next_s;
continue;
}
}
const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX.Data[c] : FallbackAdvanceX);
if (ImCharIsBlankW(c))
{
if (inside_word)
{
line_width += blank_width;
blank_width = 0.0f;
word_end = s;
}
blank_width += char_width;
inside_word = false;
}
else
{
word_width += char_width;
if (inside_word)
{
word_end = next_s;
}
else
{
prev_word_end = word_end;
line_width += word_width + blank_width;
word_width = blank_width = 0.0f;
}
// Allow wrapping after punctuation.
inside_word = (c != '.' && c != ',' && c != ';' && c != '!' && c != '?' && c != '\"');
}
// We ignore blank width at the end of the line (they can be skipped)
if (line_width + word_width > wrap_width)
{
// Words that cannot possibly fit within an entire line will be cut anywhere.
if (word_width < wrap_width)
s = prev_word_end ? prev_word_end : word_end;
break;
}
s = next_s;
}
// Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity.
// +1 may not be a character start point in UTF-8 but it's ok because caller loops use (text >= word_wrap_eol).
if (s == text && text < text_end)
return s + 1;
return s;
}
ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end, const char** remaining) const
{
if (!text_end)
text_end = text_begin + strlen(text_begin); // FIXME-OPT: Need to avoid this.
const float line_height = size;
const float scale = size / FontSize;
ImVec2 text_size = ImVec2(0, 0);
float line_width = 0.0f;
const bool word_wrap_enabled = (wrap_width > 0.0f);
const char* word_wrap_eol = NULL;
const char* s = text_begin;
while (s < text_end)
{
if (word_wrap_enabled)
{
// Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.
if (!word_wrap_eol)
word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - line_width);
if (s >= word_wrap_eol)
{
if (text_size.x < line_width)
text_size.x = line_width;
text_size.y += line_height;
line_width = 0.0f;
word_wrap_eol = NULL;
s = CalcWordWrapNextLineStartA(s, text_end); // Wrapping skips upcoming blanks
continue;
}
}
// Decode and advance source
const char* prev_s = s;
unsigned int c = (unsigned int)*s;
if (c < 0x80)
s += 1;
else
s += ImTextCharFromUtf8(&c, s, text_end);
if (c < 32)
{
if (c == '\n')
{
text_size.x = ImMax(text_size.x, line_width);
text_size.y += line_height;
line_width = 0.0f;
continue;
}
if (c == '\r')
continue;
}
const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX.Data[c] : FallbackAdvanceX) * scale;
if (line_width + char_width >= max_width)
{
s = prev_s;
break;
}
line_width += char_width;
}
if (text_size.x < line_width)
text_size.x = line_width;
if (line_width > 0 || text_size.y == 0.0f)
text_size.y += line_height;
if (remaining)
*remaining = s;
return text_size;
}
// Note: as with every ImDrawList drawing function, this expects that the font atlas texture is bound.
void ImFont::RenderChar(ImDrawList* draw_list, float size, const ImVec2& pos, ImU32 col, ImWchar c) const
{
const ImFontGlyph* glyph = FindGlyph(c);
if (!glyph || !glyph->Visible)
return;
if (glyph->Colored)
col |= ~IM_COL32_A_MASK;
float scale = (size >= 0.0f) ? (size / FontSize) : 1.0f;
float x = IM_TRUNC(pos.x);
float y = IM_TRUNC(pos.y);
draw_list->PrimReserve(6, 4);
draw_list->PrimRectUV(ImVec2(x + glyph->X0 * scale, y + glyph->Y0 * scale), ImVec2(x + glyph->X1 * scale, y + glyph->Y1 * scale), ImVec2(glyph->U0, glyph->V0), ImVec2(glyph->U1, glyph->V1), col);
}
// Note: as with every ImDrawList drawing function, this expects that the font atlas texture is bound.
void ImFont::RenderText(ImDrawList* draw_list, float size, const ImVec2& pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, float wrap_width, bool cpu_fine_clip) const
{
if (!text_end)
text_end = text_begin + strlen(text_begin); // ImGui:: functions generally already provides a valid text_end, so this is merely to handle direct calls.
// Align to be pixel perfect
float x = IM_TRUNC(pos.x);
float y = IM_TRUNC(pos.y);
if (y > clip_rect.w)
return;
const float start_x = x;
const float scale = size / FontSize;
const float line_height = FontSize * scale;
const bool word_wrap_enabled = (wrap_width > 0.0f);
// Fast-forward to first visible line
const char* s = text_begin;
if (y + line_height < clip_rect.y)
while (y + line_height < clip_rect.y && s < text_end)
{
const char* line_end = (const char*)memchr(s, '\n', text_end - s);
if (word_wrap_enabled)
{
// FIXME-OPT: This is not optimal as do first do a search for \n before calling CalcWordWrapPositionA().
// If the specs for CalcWordWrapPositionA() were reworked to optionally return on \n we could combine both.
// However it is still better than nothing performing the fast-forward!
s = CalcWordWrapPositionA(scale, s, line_end ? line_end : text_end, wrap_width);
s = CalcWordWrapNextLineStartA(s, text_end);
}
else
{
s = line_end ? line_end + 1 : text_end;
}
y += line_height;
}
// For large text, scan for the last visible line in order to avoid over-reserving in the call to PrimReserve()
// Note that very large horizontal line will still be affected by the issue (e.g. a one megabyte string buffer without a newline will likely crash atm)
if (text_end - s > 10000 && !word_wrap_enabled)
{
const char* s_end = s;
float y_end = y;
while (y_end < clip_rect.w && s_end < text_end)
{
s_end = (const char*)memchr(s_end, '\n', text_end - s_end);
s_end = s_end ? s_end + 1 : text_end;
y_end += line_height;
}
text_end = s_end;
}
if (s == text_end)
return;
// Reserve vertices for remaining worse case (over-reserving is useful and easily amortized)
const int vtx_count_max = (int)(text_end - s) * 4;
const int idx_count_max = (int)(text_end - s) * 6;
const int idx_expected_size = draw_list->IdxBuffer.Size + idx_count_max;
draw_list->PrimReserve(idx_count_max, vtx_count_max);
ImDrawVert* vtx_write = draw_list->_VtxWritePtr;
ImDrawIdx* idx_write = draw_list->_IdxWritePtr;
unsigned int vtx_index = draw_list->_VtxCurrentIdx;
const ImU32 col_untinted = col | ~IM_COL32_A_MASK;
const char* word_wrap_eol = NULL;
while (s < text_end)
{
if (word_wrap_enabled)
{
// Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.
if (!word_wrap_eol)
word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - (x - start_x));
if (s >= word_wrap_eol)
{
x = start_x;
y += line_height;
if (y > clip_rect.w)
break; // break out of main loop
word_wrap_eol = NULL;
s = CalcWordWrapNextLineStartA(s, text_end); // Wrapping skips upcoming blanks
continue;
}
}
// Decode and advance source
unsigned int c = (unsigned int)*s;
if (c < 0x80)
s += 1;
else
s += ImTextCharFromUtf8(&c, s, text_end);
if (c < 32)
{
if (c == '\n')
{
x = start_x;
y += line_height;
if (y > clip_rect.w)
break; // break out of main loop
continue;
}
if (c == '\r')
continue;
}
const ImFontGlyph* glyph = FindGlyph((ImWchar)c);
if (glyph == NULL)
continue;
float char_width = glyph->AdvanceX * scale;
if (glyph->Visible)
{
// We don't do a second finer clipping test on the Y axis as we've already skipped anything before clip_rect.y and exit once we pass clip_rect.w
float x1 = x + glyph->X0 * scale;
float x2 = x + glyph->X1 * scale;
float y1 = y + glyph->Y0 * scale;
float y2 = y + glyph->Y1 * scale;
if (x1 <= clip_rect.z && x2 >= clip_rect.x)
{
// Render a character
float u1 = glyph->U0;
float v1 = glyph->V0;
float u2 = glyph->U1;
float v2 = glyph->V1;
// CPU side clipping used to fit text in their frame when the frame is too small. Only does clipping for axis aligned quads.
if (cpu_fine_clip)
{
if (x1 < clip_rect.x)
{
u1 = u1 + (1.0f - (x2 - clip_rect.x) / (x2 - x1)) * (u2 - u1);
x1 = clip_rect.x;
}
if (y1 < clip_rect.y)
{
v1 = v1 + (1.0f - (y2 - clip_rect.y) / (y2 - y1)) * (v2 - v1);
y1 = clip_rect.y;
}
if (x2 > clip_rect.z)
{
u2 = u1 + ((clip_rect.z - x1) / (x2 - x1)) * (u2 - u1);
x2 = clip_rect.z;
}
if (y2 > clip_rect.w)
{
v2 = v1 + ((clip_rect.w - y1) / (y2 - y1)) * (v2 - v1);
y2 = clip_rect.w;
}
if (y1 >= y2)
{
x += char_width;
continue;
}
}
// Support for untinted glyphs
ImU32 glyph_col = glyph->Colored ? col_untinted : col;
// We are NOT calling PrimRectUV() here because non-inlined causes too much overhead in a debug builds. Inlined here:
{
vtx_write[0].pos.x = x1; vtx_write[0].pos.y = y1; vtx_write[0].col = glyph_col; vtx_write[0].uv.x = u1; vtx_write[0].uv.y = v1;
vtx_write[1].pos.x = x2; vtx_write[1].pos.y = y1; vtx_write[1].col = glyph_col; vtx_write[1].uv.x = u2; vtx_write[1].uv.y = v1;
vtx_write[2].pos.x = x2; vtx_write[2].pos.y = y2; vtx_write[2].col = glyph_col; vtx_write[2].uv.x = u2; vtx_write[2].uv.y = v2;
vtx_write[3].pos.x = x1; vtx_write[3].pos.y = y2; vtx_write[3].col = glyph_col; vtx_write[3].uv.x = u1; vtx_write[3].uv.y = v2;
idx_write[0] = (ImDrawIdx)(vtx_index); idx_write[1] = (ImDrawIdx)(vtx_index + 1); idx_write[2] = (ImDrawIdx)(vtx_index + 2);
idx_write[3] = (ImDrawIdx)(vtx_index); idx_write[4] = (ImDrawIdx)(vtx_index + 2); idx_write[5] = (ImDrawIdx)(vtx_index + 3);
vtx_write += 4;
vtx_index += 4;
idx_write += 6;
}
}
}
x += char_width;
}
// Give back unused vertices (clipped ones, blanks) ~ this is essentially a PrimUnreserve() action.
draw_list->VtxBuffer.Size = (int)(vtx_write - draw_list->VtxBuffer.Data); // Same as calling shrink()
draw_list->IdxBuffer.Size = (int)(idx_write - draw_list->IdxBuffer.Data);
draw_list->CmdBuffer[draw_list->CmdBuffer.Size - 1].ElemCount -= (idx_expected_size - draw_list->IdxBuffer.Size);
draw_list->_VtxWritePtr = vtx_write;
draw_list->_IdxWritePtr = idx_write;
draw_list->_VtxCurrentIdx = vtx_index;
}
//-----------------------------------------------------------------------------
// [SECTION] ImGui Internal Render Helpers
//-----------------------------------------------------------------------------
// Vaguely redesigned to stop accessing ImGui global state:
// - RenderArrow()
// - RenderBullet()
// - RenderCheckMark()
// - RenderArrowPointingAt()
// - RenderRectFilledRangeH()
// - RenderRectFilledWithHole()
//-----------------------------------------------------------------------------
// Function in need of a redesign (legacy mess)
// - RenderColorRectWithAlphaCheckerboard()
//-----------------------------------------------------------------------------
// Render an arrow aimed to be aligned with text (p_min is a position in the same space text would be positioned). To e.g. denote expanded/collapsed state
void ImGui::RenderArrow(ImDrawList* draw_list, ImVec2 pos, ImU32 col, ImGuiDir dir, float scale)
{
const float h = draw_list->_Data->FontSize * 1.00f;
float r = h * 0.40f * scale;
ImVec2 center = pos + ImVec2(h * 0.50f, h * 0.50f * scale);
ImVec2 a, b, c;
switch (dir)
{
case ImGuiDir_Up:
case ImGuiDir_Down:
if (dir == ImGuiDir_Up) r = -r;
a = ImVec2(+0.000f, +0.750f) * r;
b = ImVec2(-0.866f, -0.750f) * r;
c = ImVec2(+0.866f, -0.750f) * r;
break;
case ImGuiDir_Left:
case ImGuiDir_Right:
if (dir == ImGuiDir_Left) r = -r;
a = ImVec2(+0.750f, +0.000f) * r;
b = ImVec2(-0.750f, +0.866f) * r;
c = ImVec2(-0.750f, -0.866f) * r;
break;
case ImGuiDir_None:
case ImGuiDir_COUNT:
IM_ASSERT(0);
break;
}
draw_list->AddTriangleFilled(center + a, center + b, center + c, col);
}
void ImGui::RenderBullet(ImDrawList* draw_list, ImVec2 pos, ImU32 col)
{
// FIXME-OPT: This should be baked in font.
draw_list->AddCircleFilled(pos, draw_list->_Data->FontSize * 0.20f, col, 8);
}
void ImGui::RenderCheckMark(ImDrawList* draw_list, ImVec2 pos, ImU32 col, float sz)
{
float thickness = ImMax(sz / 5.0f, 1.0f);
sz -= thickness * 0.5f;
pos += ImVec2(thickness * 0.25f, thickness * 0.25f);
float third = sz / 3.0f;
float bx = pos.x + third;
float by = pos.y + sz - third * 0.5f;
draw_list->PathLineTo(ImVec2(bx - third, by - third));
draw_list->PathLineTo(ImVec2(bx, by));
draw_list->PathLineTo(ImVec2(bx + third * 2.0f, by - third * 2.0f));
draw_list->PathStroke(col, 0, thickness);
}
// Render an arrow. 'pos' is position of the arrow tip. half_sz.x is length from base to tip. half_sz.y is length on each side.
void ImGui::RenderArrowPointingAt(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, ImGuiDir direction, ImU32 col)
{
switch (direction)
{
case ImGuiDir_Left: draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), pos, col); return;
case ImGuiDir_Right: draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), pos, col); return;
case ImGuiDir_Up: draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), pos, col); return;
case ImGuiDir_Down: draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), pos, col); return;
case ImGuiDir_None: case ImGuiDir_COUNT: break; // Fix warnings
}
}
static inline float ImAcos01(float x)
{
if (x <= 0.0f) return IM_PI * 0.5f;
if (x >= 1.0f) return 0.0f;
return ImAcos(x);
//return (-0.69813170079773212f * x * x - 0.87266462599716477f) * x + 1.5707963267948966f; // Cheap approximation, may be enough for what we do.
}
// FIXME: Cleanup and move code to ImDrawList.
void ImGui::RenderRectFilledRangeH(ImDrawList* draw_list, const ImRect& rect, ImU32 col, float x_start_norm, float x_end_norm, float rounding)
{
if (x_end_norm == x_start_norm)
return;
if (x_start_norm > x_end_norm)
ImSwap(x_start_norm, x_end_norm);
ImVec2 p0 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_start_norm), rect.Min.y);
ImVec2 p1 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_end_norm), rect.Max.y);
if (rounding == 0.0f)
{
draw_list->AddRectFilled(p0, p1, col, 0.0f);
return;
}
rounding = ImClamp(ImMin((rect.Max.x - rect.Min.x) * 0.5f, (rect.Max.y - rect.Min.y) * 0.5f) - 1.0f, 0.0f, rounding);
const float inv_rounding = 1.0f / rounding;
const float arc0_b = ImAcos01(1.0f - (p0.x - rect.Min.x) * inv_rounding);
const float arc0_e = ImAcos01(1.0f - (p1.x - rect.Min.x) * inv_rounding);
const float half_pi = IM_PI * 0.5f; // We will == compare to this because we know this is the exact value ImAcos01 can return.
const float x0 = ImMax(p0.x, rect.Min.x + rounding);
if (arc0_b == arc0_e)
{
draw_list->PathLineTo(ImVec2(x0, p1.y));
draw_list->PathLineTo(ImVec2(x0, p0.y));
}
else if (arc0_b == 0.0f && arc0_e == half_pi)
{
draw_list->PathArcToFast(ImVec2(x0, p1.y - rounding), rounding, 3, 6); // BL
draw_list->PathArcToFast(ImVec2(x0, p0.y + rounding), rounding, 6, 9); // TR
}
else
{
draw_list->PathArcTo(ImVec2(x0, p1.y - rounding), rounding, IM_PI - arc0_e, IM_PI - arc0_b); // BL
draw_list->PathArcTo(ImVec2(x0, p0.y + rounding), rounding, IM_PI + arc0_b, IM_PI + arc0_e); // TR
}
if (p1.x > rect.Min.x + rounding)
{
const float arc1_b = ImAcos01(1.0f - (rect.Max.x - p1.x) * inv_rounding);
const float arc1_e = ImAcos01(1.0f - (rect.Max.x - p0.x) * inv_rounding);
const float x1 = ImMin(p1.x, rect.Max.x - rounding);
if (arc1_b == arc1_e)
{
draw_list->PathLineTo(ImVec2(x1, p0.y));
draw_list->PathLineTo(ImVec2(x1, p1.y));
}
else if (arc1_b == 0.0f && arc1_e == half_pi)
{
draw_list->PathArcToFast(ImVec2(x1, p0.y + rounding), rounding, 9, 12); // TR
draw_list->PathArcToFast(ImVec2(x1, p1.y - rounding), rounding, 0, 3); // BR
}
else
{
draw_list->PathArcTo(ImVec2(x1, p0.y + rounding), rounding, -arc1_e, -arc1_b); // TR
draw_list->PathArcTo(ImVec2(x1, p1.y - rounding), rounding, +arc1_b, +arc1_e); // BR
}
}
draw_list->PathFillConvex(col);
}
void ImGui::RenderRectFilledWithHole(ImDrawList* draw_list, const ImRect& outer, const ImRect& inner, ImU32 col, float rounding)
{
const bool fill_L = (inner.Min.x > outer.Min.x);
const bool fill_R = (inner.Max.x < outer.Max.x);
const bool fill_U = (inner.Min.y > outer.Min.y);
const bool fill_D = (inner.Max.y < outer.Max.y);
if (fill_L) draw_list->AddRectFilled(ImVec2(outer.Min.x, inner.Min.y), ImVec2(inner.Min.x, inner.Max.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_U ? 0 : ImDrawFlags_RoundCornersTopLeft) | (fill_D ? 0 : ImDrawFlags_RoundCornersBottomLeft));
if (fill_R) draw_list->AddRectFilled(ImVec2(inner.Max.x, inner.Min.y), ImVec2(outer.Max.x, inner.Max.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_U ? 0 : ImDrawFlags_RoundCornersTopRight) | (fill_D ? 0 : ImDrawFlags_RoundCornersBottomRight));
if (fill_U) draw_list->AddRectFilled(ImVec2(inner.Min.x, outer.Min.y), ImVec2(inner.Max.x, inner.Min.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_L ? 0 : ImDrawFlags_RoundCornersTopLeft) | (fill_R ? 0 : ImDrawFlags_RoundCornersTopRight));
if (fill_D) draw_list->AddRectFilled(ImVec2(inner.Min.x, inner.Max.y), ImVec2(inner.Max.x, outer.Max.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_L ? 0 : ImDrawFlags_RoundCornersBottomLeft) | (fill_R ? 0 : ImDrawFlags_RoundCornersBottomRight));
if (fill_L && fill_U) draw_list->AddRectFilled(ImVec2(outer.Min.x, outer.Min.y), ImVec2(inner.Min.x, inner.Min.y), col, rounding, ImDrawFlags_RoundCornersTopLeft);
if (fill_R && fill_U) draw_list->AddRectFilled(ImVec2(inner.Max.x, outer.Min.y), ImVec2(outer.Max.x, inner.Min.y), col, rounding, ImDrawFlags_RoundCornersTopRight);
if (fill_L && fill_D) draw_list->AddRectFilled(ImVec2(outer.Min.x, inner.Max.y), ImVec2(inner.Min.x, outer.Max.y), col, rounding, ImDrawFlags_RoundCornersBottomLeft);
if (fill_R && fill_D) draw_list->AddRectFilled(ImVec2(inner.Max.x, inner.Max.y), ImVec2(outer.Max.x, outer.Max.y), col, rounding, ImDrawFlags_RoundCornersBottomRight);
}
// Helper for ColorPicker4()
// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
// Spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding altogether.
// FIXME: uses ImGui::GetColorU32
void ImGui::RenderColorRectWithAlphaCheckerboard(ImDrawList* draw_list, ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, ImDrawFlags flags)
{
if ((flags & ImDrawFlags_RoundCornersMask_) == 0)
flags = ImDrawFlags_RoundCornersDefault_;
if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
{
ImU32 col_bg1 = GetColorU32(ImAlphaBlendColors(IM_COL32(204, 204, 204, 255), col));
ImU32 col_bg2 = GetColorU32(ImAlphaBlendColors(IM_COL32(128, 128, 128, 255), col));
draw_list->AddRectFilled(p_min, p_max, col_bg1, rounding, flags);
int yi = 0;
for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
{
float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
if (y2 <= y1)
continue;
for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
{
float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
if (x2 <= x1)
continue;
ImDrawFlags cell_flags = ImDrawFlags_RoundCornersNone;
if (y1 <= p_min.y) { if (x1 <= p_min.x) cell_flags |= ImDrawFlags_RoundCornersTopLeft; if (x2 >= p_max.x) cell_flags |= ImDrawFlags_RoundCornersTopRight; }
if (y2 >= p_max.y) { if (x1 <= p_min.x) cell_flags |= ImDrawFlags_RoundCornersBottomLeft; if (x2 >= p_max.x) cell_flags |= ImDrawFlags_RoundCornersBottomRight; }
// Combine flags
cell_flags = (flags == ImDrawFlags_RoundCornersNone || cell_flags == ImDrawFlags_RoundCornersNone) ? ImDrawFlags_RoundCornersNone : (cell_flags & flags);
draw_list->AddRectFilled(ImVec2(x1, y1), ImVec2(x2, y2), col_bg2, rounding, cell_flags);
}
}
}
else
{
draw_list->AddRectFilled(p_min, p_max, col, rounding, flags);
}
}
//-----------------------------------------------------------------------------
// [SECTION] Decompression code
//-----------------------------------------------------------------------------
// Compressed with stb_compress() then converted to a C array and encoded as base85.
// Use the program in misc/fonts/binary_to_compressed_c.cpp to create the array from a TTF file.
// The purpose of encoding as base85 instead of "0x00,0x01,..." style is only save on _source code_ size.
// Decompression from stb.h (public domain) by Sean Barrett https://github.com/nothings/stb/blob/master/stb.h
//-----------------------------------------------------------------------------
static unsigned int stb_decompress_length(const unsigned char *input)
{
return (input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11];
}
static unsigned char *stb__barrier_out_e, *stb__barrier_out_b;
static const unsigned char *stb__barrier_in_b;
static unsigned char *stb__dout;
static void stb__match(const unsigned char *data, unsigned int length)
{
// INVERSE of memmove... write each byte before copying the next...
IM_ASSERT(stb__dout + length <= stb__barrier_out_e);
if (stb__dout + length > stb__barrier_out_e) { stb__dout += length; return; }
if (data < stb__barrier_out_b) { stb__dout = stb__barrier_out_e+1; return; }
while (length--) *stb__dout++ = *data++;
}
static void stb__lit(const unsigned char *data, unsigned int length)
{
IM_ASSERT(stb__dout + length <= stb__barrier_out_e);
if (stb__dout + length > stb__barrier_out_e) { stb__dout += length; return; }
if (data < stb__barrier_in_b) { stb__dout = stb__barrier_out_e+1; return; }
memcpy(stb__dout, data, length);
stb__dout += length;
}
#define stb__in2(x) ((i[x] << 8) + i[(x)+1])
#define stb__in3(x) ((i[x] << 16) + stb__in2((x)+1))
#define stb__in4(x) ((i[x] << 24) + stb__in3((x)+1))
static const unsigned char *stb_decompress_token(const unsigned char *i)
{
if (*i >= 0x20) { // use fewer if's for cases that expand small
if (*i >= 0x80) stb__match(stb__dout-i[1]-1, i[0] - 0x80 + 1), i += 2;
else if (*i >= 0x40) stb__match(stb__dout-(stb__in2(0) - 0x4000 + 1), i[2]+1), i += 3;
else /* *i >= 0x20 */ stb__lit(i+1, i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1);
} else { // more ifs for cases that expand large, since overhead is amortized
if (*i >= 0x18) stb__match(stb__dout-(stb__in3(0) - 0x180000 + 1), i[3]+1), i += 4;
else if (*i >= 0x10) stb__match(stb__dout-(stb__in3(0) - 0x100000 + 1), stb__in2(3)+1), i += 5;
else if (*i >= 0x08) stb__lit(i+2, stb__in2(0) - 0x0800 + 1), i += 2 + (stb__in2(0) - 0x0800 + 1);
else if (*i == 0x07) stb__lit(i+3, stb__in2(1) + 1), i += 3 + (stb__in2(1) + 1);
else if (*i == 0x06) stb__match(stb__dout-(stb__in3(1)+1), i[4]+1), i += 5;
else if (*i == 0x04) stb__match(stb__dout-(stb__in3(1)+1), stb__in2(4)+1), i += 6;
}
return i;
}
static unsigned int stb_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen)
{
const unsigned long ADLER_MOD = 65521;
unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
unsigned long blocklen = buflen % 5552;
unsigned long i;
while (buflen) {
for (i=0; i + 7 < blocklen; i += 8) {
s1 += buffer[0], s2 += s1;
s1 += buffer[1], s2 += s1;
s1 += buffer[2], s2 += s1;
s1 += buffer[3], s2 += s1;
s1 += buffer[4], s2 += s1;
s1 += buffer[5], s2 += s1;
s1 += buffer[6], s2 += s1;
s1 += buffer[7], s2 += s1;
buffer += 8;
}
for (; i < blocklen; ++i)
s1 += *buffer++, s2 += s1;
s1 %= ADLER_MOD, s2 %= ADLER_MOD;
buflen -= blocklen;
blocklen = 5552;
}
return (unsigned int)(s2 << 16) + (unsigned int)s1;
}
static unsigned int stb_decompress(unsigned char *output, const unsigned char *i, unsigned int /*length*/)
{
if (stb__in4(0) != 0x57bC0000) return 0;
if (stb__in4(4) != 0) return 0; // error! stream is > 4GB
const unsigned int olen = stb_decompress_length(i);
stb__barrier_in_b = i;
stb__barrier_out_e = output + olen;
stb__barrier_out_b = output;
i += 16;
stb__dout = output;
for (;;) {
const unsigned char *old_i = i;
i = stb_decompress_token(i);
if (i == old_i) {
if (*i == 0x05 && i[1] == 0xfa) {
IM_ASSERT(stb__dout == output + olen);
if (stb__dout != output + olen) return 0;
if (stb_adler32(1, output, olen) != (unsigned int) stb__in4(2))
return 0;
return olen;
} else {
IM_ASSERT(0); /* NOTREACHED */
return 0;
}
}
IM_ASSERT(stb__dout <= output + olen);
if (stb__dout > output + olen)
return 0;
}
}
//-----------------------------------------------------------------------------
// [SECTION] Default font data (ProggyClean.ttf)
//-----------------------------------------------------------------------------
// ProggyClean.ttf
// Copyright (c) 2004, 2005 Tristan Grimmer
// MIT license (see License.txt in http://www.proggyfonts.net/index.php?menu=download)
// Download and more information at http://www.proggyfonts.net or http://upperboundsinteractive.com/fonts.php
//-----------------------------------------------------------------------------
// File: 'ProggyClean.ttf' (41208 bytes)
// Exported using misc/fonts/binary_to_compressed_c.cpp (with compression + base85 string encoding).
// The purpose of encoding as base85 instead of "0x00,0x01,..." style is only save on _source code_ size.
//-----------------------------------------------------------------------------
static const char proggy_clean_ttf_compressed_data_base85[11980 + 1] =
"7])#######hV0qs'/###[),##/l:$#Q6>##5[n42>c-TH`->>#/e>11NNV=Bv(*:.F?uu#(gRU.o0XGH`$vhLG1hxt9?W`#,5LsCp#-i>.r$<$6pD>Lb';9Crc6tgXmKVeU2cD4Eo3R/"
"2*>]b(MC;$jPfY.;h^`IWM9<Lh2TlS+f-s$o6Q<BWH`YiU.xfLq$N;$0iR/GX:U(jcW2p/W*q?-qmnUCI;jHSAiFWM.R*kU@C=GH?a9wp8f$e.-4^Qg1)Q-GL(lf(r/7GrRgwV%MS=C#"
"`8ND>Qo#t'X#(v#Y9w0#1D$CIf;W'#pWUPXOuxXuU(H9M(1<q-UE31#^-V'8IRUo7Qf./L>=Ke$$'5F%)]0^#0X@U.a<r:QLtFsLcL6##lOj)#.Y5<-R&KgLwqJfLgN&;Q?gI^#DY2uL"
"i@^rMl9t=cWq6##weg>$FBjVQTSDgEKnIS7EM9>ZY9w0#L;>>#Mx&4Mvt//L[MkA#W@lK.N'[0#7RL_&#w+F%HtG9M#XL`N&.,GM4Pg;-<nLENhvx>-VsM.M0rJfLH2eTM`*oJMHRC`N"
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static const char* GetDefaultCompressedFontDataTTFBase85()
{
return proggy_clean_ttf_compressed_data_base85;
}
#endif // #ifndef IMGUI_DISABLE
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