335 lines
11 KiB
C
335 lines
11 KiB
C
/*
|
|
Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
|
|
#include <SDL3/SDL.h>
|
|
#include <wayland-client.h>
|
|
#include <xdg-shell-client-protocol.h>
|
|
|
|
#include "icon.h"
|
|
|
|
#define WINDOW_WIDTH 640
|
|
#define WINDOW_HEIGHT 480
|
|
#define NUM_SPRITES 100
|
|
#define MAX_SPEED 1
|
|
|
|
static SDL_Window *window;
|
|
static SDL_Renderer *renderer;
|
|
static SDL_Texture *sprite;
|
|
static SDL_FRect positions[NUM_SPRITES];
|
|
static SDL_FRect velocities[NUM_SPRITES];
|
|
static int sprite_w, sprite_h;
|
|
static int done;
|
|
|
|
static SDL_Texture *CreateTexture(SDL_Renderer *r, unsigned char *data, unsigned int len, int *w, int *h)
|
|
{
|
|
SDL_Texture *texture = NULL;
|
|
SDL_Surface *surface;
|
|
SDL_IOStream *src = SDL_IOFromConstMem(data, len);
|
|
if (src) {
|
|
surface = SDL_LoadBMP_IO(src, SDL_TRUE);
|
|
if (surface) {
|
|
/* Treat white as transparent */
|
|
SDL_SetSurfaceColorKey(surface, SDL_TRUE, SDL_MapRGB(surface->format, 255, 255, 255));
|
|
|
|
texture = SDL_CreateTextureFromSurface(r, surface);
|
|
*w = surface->w;
|
|
*h = surface->h;
|
|
SDL_DestroySurface(surface);
|
|
}
|
|
}
|
|
return texture;
|
|
}
|
|
|
|
static void MoveSprites(void)
|
|
{
|
|
int i;
|
|
int window_w;
|
|
int window_h;
|
|
SDL_FRect *position, *velocity;
|
|
|
|
/* Get the window size */
|
|
SDL_GetWindowSizeInPixels(window, &window_w, &window_h);
|
|
|
|
/* Draw a gray background */
|
|
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
|
|
SDL_RenderClear(renderer);
|
|
|
|
/* Move the sprite, bounce at the wall, and draw */
|
|
for (i = 0; i < NUM_SPRITES; ++i) {
|
|
position = &positions[i];
|
|
velocity = &velocities[i];
|
|
position->x += velocity->x;
|
|
if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
|
|
velocity->x = -velocity->x;
|
|
position->x += velocity->x;
|
|
}
|
|
position->y += velocity->y;
|
|
if ((position->y < 0) || (position->y >= (window_h - sprite_h))) {
|
|
velocity->y = -velocity->y;
|
|
position->y += velocity->y;
|
|
}
|
|
|
|
/* Blit the sprite onto the screen */
|
|
SDL_RenderTexture(renderer, sprite, NULL, position);
|
|
}
|
|
|
|
/* Update the screen! */
|
|
SDL_RenderPresent(renderer);
|
|
}
|
|
|
|
static int InitSprites(void)
|
|
{
|
|
/* Create the sprite texture and initialize the sprite positions */
|
|
sprite = CreateTexture(renderer, icon_bmp, icon_bmp_len, &sprite_w, &sprite_h);
|
|
|
|
if (!sprite) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to create sprite texture");
|
|
return -1;
|
|
}
|
|
|
|
srand((unsigned int)time(NULL));
|
|
for (int i = 0; i < NUM_SPRITES; ++i) {
|
|
positions[i].x = (float)(rand() % (WINDOW_WIDTH - sprite_w));
|
|
positions[i].y = (float)(rand() % (WINDOW_HEIGHT - sprite_h));
|
|
positions[i].w = (float)sprite_w;
|
|
positions[i].h = (float)sprite_h;
|
|
velocities[i].x = 0.0f;
|
|
velocities[i].y = 0.0f;
|
|
while (!velocities[i].x && !velocities[i].y) {
|
|
velocities[i].x = (float)((rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED);
|
|
velocities[i].y = (float)((rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Encapsulated in a struct to silence shadow variable warnings */
|
|
static struct _state
|
|
{
|
|
/* These are owned by SDL and must not be destroyed! */
|
|
struct wl_display *wl_display;
|
|
struct wl_surface *wl_surface;
|
|
|
|
/* These are owned by the application and need to be cleaned up on exit. */
|
|
struct wl_registry *wl_registry;
|
|
struct xdg_wm_base *xdg_wm_base;
|
|
struct xdg_surface *xdg_surface;
|
|
struct xdg_toplevel *xdg_toplevel;
|
|
} state;
|
|
|
|
static void xdg_surface_configure(void *data, struct xdg_surface *xdg_surface, uint32_t serial)
|
|
{
|
|
xdg_surface_ack_configure(state.xdg_surface, serial);
|
|
}
|
|
|
|
static const struct xdg_surface_listener xdg_surface_listener = {
|
|
.configure = xdg_surface_configure,
|
|
};
|
|
|
|
static void xdg_toplevel_configure(void *data, struct xdg_toplevel *xdg_toplevel, int32_t width, int32_t height, struct wl_array *states)
|
|
{
|
|
/* NOP */
|
|
}
|
|
|
|
static void xdg_toplevel_close(void *data, struct xdg_toplevel *xdg_toplevel)
|
|
{
|
|
done = 1;
|
|
}
|
|
|
|
static void xdg_toplevel_configure_bounds(void *data, struct xdg_toplevel *xdg_toplevel, int32_t width, int32_t height)
|
|
{
|
|
/* NOP */
|
|
}
|
|
|
|
static void xdg_toplevel_wm_capabilities(void *data, struct xdg_toplevel *xdg_toplevel, struct wl_array *capabilities)
|
|
{
|
|
/* NOP */
|
|
}
|
|
|
|
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
|
|
.configure = xdg_toplevel_configure,
|
|
.close = xdg_toplevel_close,
|
|
.configure_bounds = xdg_toplevel_configure_bounds,
|
|
.wm_capabilities = xdg_toplevel_wm_capabilities
|
|
};
|
|
|
|
static void xdg_wm_base_ping(void *data, struct xdg_wm_base *xdg_wm_base, uint32_t serial)
|
|
{
|
|
xdg_wm_base_pong(state.xdg_wm_base, serial);
|
|
}
|
|
|
|
static const struct xdg_wm_base_listener xdg_wm_base_listener = {
|
|
.ping = xdg_wm_base_ping,
|
|
};
|
|
|
|
static void registry_global(void *data, struct wl_registry *wl_registry, uint32_t name, const char *interface, uint32_t version)
|
|
{
|
|
if (SDL_strcmp(interface, xdg_wm_base_interface.name) == 0) {
|
|
state.xdg_wm_base = wl_registry_bind(state.wl_registry, name, &xdg_wm_base_interface, 1);
|
|
xdg_wm_base_add_listener(state.xdg_wm_base, &xdg_wm_base_listener, NULL);
|
|
}
|
|
}
|
|
|
|
static void registry_global_remove(void *data, struct wl_registry *wl_registry, uint32_t name)
|
|
{
|
|
/* NOP */
|
|
}
|
|
|
|
static const struct wl_registry_listener wl_registry_listener = {
|
|
.global = registry_global,
|
|
.global_remove = registry_global_remove,
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int ret = -1;
|
|
SDL_PropertiesID props;
|
|
|
|
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS) != 0) {
|
|
return -1;
|
|
}
|
|
|
|
if (SDL_strcmp(SDL_GetCurrentVideoDriver(), "wayland") != 0) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Video driver must be 'wayland', not '%s'", SDL_GetCurrentVideoDriver());
|
|
goto exit;
|
|
}
|
|
|
|
/* Create a window with the custom surface role property set. */
|
|
props = SDL_CreateProperties();
|
|
SDL_SetBooleanProperty(props, SDL_PROP_WINDOW_CREATE_WAYLAND_SURFACE_ROLE_CUSTOM_BOOLEAN, SDL_TRUE); /* Roleless surface */
|
|
SDL_SetBooleanProperty(props, SDL_PROP_WINDOW_CREATE_OPENGL_BOOLEAN, SDL_TRUE); /* OpenGL enabled */
|
|
SDL_SetNumberProperty(props, SDL_PROP_WINDOW_CREATE_WIDTH_NUMBER, WINDOW_WIDTH); /* Default width */
|
|
SDL_SetNumberProperty(props, SDL_PROP_WINDOW_CREATE_HEIGHT_NUMBER, WINDOW_HEIGHT); /* Default height */
|
|
SDL_SetBooleanProperty(props, SDL_PROP_WINDOW_CREATE_HIGH_PIXEL_DENSITY_BOOLEAN, SDL_TRUE); /* Handle DPI scaling internally */
|
|
SDL_SetStringProperty(props, SDL_PROP_WINDOW_CREATE_TITLE_STRING, "Wayland custom surface role test"); /* Default title */
|
|
|
|
window = SDL_CreateWindowWithProperties(props);
|
|
SDL_DestroyProperties(props);
|
|
if (!window) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Window creation failed");
|
|
goto exit;
|
|
}
|
|
|
|
/* Create the renderer */
|
|
renderer = SDL_CreateRenderer(window, NULL, 0);
|
|
if (!renderer) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Renderer creation failed");
|
|
goto exit;
|
|
}
|
|
|
|
/* Get the display object and use it to create a registry object, which will enumerate the xdg_wm_base protocol. */
|
|
state.wl_display = SDL_GetProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_WAYLAND_DISPLAY_POINTER, NULL);
|
|
state.wl_registry = wl_display_get_registry(state.wl_display);
|
|
wl_registry_add_listener(state.wl_registry, &wl_registry_listener, NULL);
|
|
|
|
/* Roundtrip to enumerate registry objects. */
|
|
wl_display_roundtrip(state.wl_display);
|
|
|
|
if (!state.xdg_wm_base) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "'xdg_wm_base' protocol not found!");
|
|
goto exit;
|
|
}
|
|
|
|
/* Get the wl_surface object from the SDL_Window, and create a toplevel window with it. */
|
|
state.wl_surface = SDL_GetProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_WAYLAND_SURFACE_POINTER, NULL);
|
|
|
|
/* Create the xdg_surface from the wl_surface. */
|
|
state.xdg_surface = xdg_wm_base_get_xdg_surface(state.xdg_wm_base, state.wl_surface);
|
|
xdg_surface_add_listener(state.xdg_surface, &xdg_surface_listener, NULL);
|
|
|
|
/* Create the xdg_toplevel from the xdg_surface. */
|
|
state.xdg_toplevel = xdg_surface_get_toplevel(state.xdg_surface);
|
|
xdg_toplevel_add_listener(state.xdg_toplevel, &xdg_toplevel_listener, NULL);
|
|
xdg_toplevel_set_title(state.xdg_toplevel, SDL_GetWindowTitle(window));
|
|
|
|
/* Initialize the sprites. */
|
|
if (InitSprites() < 0) {
|
|
goto exit;
|
|
}
|
|
|
|
while (!done) {
|
|
SDL_Event event;
|
|
while (SDL_PollEvent(&event)) {
|
|
if (event.type == SDL_EVENT_KEY_DOWN) {
|
|
switch (event.key.keysym.sym) {
|
|
case SDLK_ESCAPE:
|
|
done = 1;
|
|
break;
|
|
case SDLK_EQUALS:
|
|
/* Ctrl+ enlarges the window */
|
|
if (event.key.keysym.mod & SDL_KMOD_CTRL) {
|
|
int w, h;
|
|
SDL_GetWindowSize(window, &w, &h);
|
|
SDL_SetWindowSize(window, w * 2, h * 2);
|
|
}
|
|
break;
|
|
case SDLK_MINUS:
|
|
/* Ctrl- shrinks the window */
|
|
if (event.key.keysym.mod & SDL_KMOD_CTRL) {
|
|
int w, h;
|
|
SDL_GetWindowSize(window, &w, &h);
|
|
SDL_SetWindowSize(window, w / 2, h / 2);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Draw the sprites */
|
|
MoveSprites();
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
exit:
|
|
/* The display and surface handles obtained from SDL are owned by SDL and must *NOT* be destroyed here! */
|
|
if (state.xdg_toplevel) {
|
|
xdg_toplevel_destroy(state.xdg_toplevel);
|
|
state.xdg_toplevel = NULL;
|
|
}
|
|
if (state.xdg_surface) {
|
|
xdg_surface_destroy(state.xdg_surface);
|
|
state.xdg_surface = NULL;
|
|
}
|
|
if (state.xdg_wm_base) {
|
|
xdg_wm_base_destroy(state.xdg_wm_base);
|
|
state.xdg_wm_base = NULL;
|
|
}
|
|
if (state.wl_registry) {
|
|
wl_registry_destroy(state.wl_registry);
|
|
state.wl_registry = NULL;
|
|
}
|
|
|
|
/* Destroy the SDL resources */
|
|
if (sprite) {
|
|
SDL_DestroyTexture(sprite);
|
|
sprite = NULL;
|
|
}
|
|
if (renderer) {
|
|
SDL_DestroyRenderer(renderer);
|
|
renderer = NULL;
|
|
}
|
|
if (window) {
|
|
SDL_DestroyWindow(window);
|
|
window = NULL;
|
|
}
|
|
|
|
SDL_Quit();
|
|
return ret;
|
|
}
|