start thinking about pasting files

src/CMakeLists.txt

@@ -19,6 +19,8 @@ add_executable(tomato
 	texture_uploader.hpp
 	./sdlrenderer_texture_uploader.hpp
 	./sdlrenderer_texture_uploader.cpp
+	./sdl_clipboard_utils.hpp
+	./sdl_clipboard_utils.cpp
 	./file_selector.hpp
 	./file_selector.cpp
 

src/chat_gui4.cpp

@@ -11,6 +11,11 @@
 #include <imgui/imgui.h>
 #include <imgui/misc/cpp/imgui_stdlib.h>
 
+#include <SDL3/SDL.h>
+
+#include "./sdl_clipboard_utils.hpp"
+#include "SDL_clipboard.h"
+
 #include <string>
 #include <variant>
 #include <vector>
@@ -256,6 +261,14 @@ void ChatGui4::render(void) {
 					}
 				}
 				ImGui::EndChild();
+
+				if (ImGui::IsKeyPressed(ImGuiKey_V) && ImGui::IsKeyPressed(ImGuiMod_Shortcut)) {
+					if (const auto* mime_type = clipboardHasImage(); mime_type != nullptr) {
+						size_t data_size = 0;
+						const auto* data = SDL_GetClipboardData(mime_type, &data_size);
+						// open file send preview.rawpixels
+					}
+				}
 			}
 			ImGui::EndChild();
 		}

src/main.cpp

@@ -6,7 +6,6 @@
 #include <imgui/backends/imgui_impl_sdlrenderer3.h>
 
 #include "./theme.hpp"
-#include "./sdlrenderer_texture_uploader.hpp"
 
 #include "./start_screen.hpp"
 
@@ -63,6 +62,11 @@ int main(int argc, char** argv) {
 				quit = true;
 				break;
 			}
+
+			if (screen->handleEvent(event)) {
+				continue;
+			}
+
 			ImGui_ImplSDL3_ProcessEvent(&event);
 		}
 		if (quit) {

src/main_screen.cpp

@@ -55,6 +55,10 @@ MainScreen::MainScreen(SDL_Renderer* renderer_, std::string save_path) :
 MainScreen::~MainScreen(void) {
 }
 
+bool MainScreen::handleEvent(SDL_Event& e) {
+	return false;
+}
+
 Screen* MainScreen::poll(bool& quit) {
 	auto new_time = std::chrono::high_resolution_clock::now();
 	const float time_delta {std::chrono::duration<float, std::chrono::seconds::period>(new_time - last_time).count()};

src/main_screen.hpp

@@ -55,6 +55,8 @@ struct MainScreen final : public Screen {
 	MainScreen(SDL_Renderer* renderer_, std::string save_path);
 	~MainScreen(void);
 
+	bool handleEvent(SDL_Event& e) override;
+
 	// return nullptr if not next
 	// sets bool quit to true if exit
 	Screen* poll(bool&) override;

src/screen.hpp

@@ -1,8 +1,13 @@
 #pragma once
 
+#include <SDL3/SDL.h>
+
 struct Screen {
 	virtual ~Screen(void) = default;
 
+	// return true if handled
+	virtual bool handleEvent(SDL_Event& e) { return false; }
+
 	// return nullptr if not next
 	// sets bool quit to true if exit
 	virtual Screen* poll(bool& quit) = 0;

src/sdl_clipboard_utils.cpp

@@ -0,0 +1,23 @@
+#include "./sdl_clipboard_utils.hpp"
+
+#include <SDL3/SDL.h>
+
+#include <vector>
+
+const char* clipboardHasImage(void) {
+	const static std::vector<const char*> image_mime_types {
+		"image/webp",
+		"image/png",
+		"image/gif",
+		"image/jpeg",
+		"image/bmp",
+	};
+
+	for (const char* mime_type : image_mime_types) {
+		if (SDL_HasClipboardData(mime_type) == SDL_TRUE) {
+			return mime_type;
+		}
+	}
+
+	return nullptr;
+}

src/sdl_clipboard_utils.hpp

@@ -0,0 +1,6 @@
+#pragma once
+
+// returns the mimetype (c-string) of the image in the clipboard
+// or nullptr, if there is none
+const char* clipboardHasImage(void);
+