133 lines
2.8 KiB
C
133 lines
2.8 KiB
C
#define SDL_MAIN_USE_CALLBACKS
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#define STB_IMAGE_IMPLEMENTATION
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#include <SDL3/SDL.h>
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#include <SDL3/SDL_main.h>
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#include "stb_image.h"
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#include "fns.h"
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#include "dat.h"
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void
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SDL_AppQuit(void *as, SDL_AppResult res)
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{
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State *st;
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st = as;
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if (st) {
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if (st->test) {
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if (st->test->tex) {
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babble("free test texture...");
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SDL_DestroyTexture(st->test->tex);
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}
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if (st->test->data) {
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babble("free test img data...");
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SDL_free(st->test->data);
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}
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babble("free test img...");
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SDL_free(st->test);
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}
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babble("free state...");
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SDL_free(st);
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}
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babble("bye!");
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return;
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}
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SDL_AppResult
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SDL_AppEvent(void *as, SDL_Event *ev)
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{
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switch (ev->type) {
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case SDL_EVENT_MOUSE_BUTTON_DOWN:
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babble("mouse button down event");
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if (ev->button.button == SDL_BUTTON_RIGHT) {
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babble("right-click quit requested");
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return SDL_APP_SUCCESS;
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}
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break;
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case SDL_EVENT_QUIT:
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babble("quit requested");
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return SDL_APP_SUCCESS;
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break; /* unreachable; here for visual symmetry */
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}
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return SDL_APP_CONTINUE;
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}
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SDL_AppResult
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SDL_AppIterate(void *as)
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{
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State *st = as;
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SDL_SetRenderDrawColor(st->ren, 0, 0, 0, SDL_ALPHA_TRANSPARENT);
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SDL_RenderClear(st->ren);
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SDL_RenderTexture(st->ren, st->test->tex, NULL, NULL);
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SDL_RenderPresent(st->ren);
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return SDL_APP_CONTINUE;
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}
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SDL_AppResult
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SDL_AppInit(void **as, int argc, char **argv)
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{
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State *st;
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SDL_Surface *sur;
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babble("init sdl...");
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if (!SDL_Init(SDL_INIT_VIDEO)) {
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fuck("sdl init fail: %s", SDL_GetError());
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return SDL_APP_FAILURE;
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}
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babble("alloc state...");
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st = SDL_calloc(1, sizeof(State));
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if (!st) {
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fuck("mem alloc fail: %s", SDL_GetError());
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return SDL_APP_FAILURE;
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}
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*as = st;
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SDL_SetHint(SDL_HINT_X11_FORCE_OVERRIDE_REDIRECT, "1");
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babble("create win+render...");
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if (!SDL_CreateWindowAndRenderer("slutpet", 320, 240,
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SDL_WINDOW_TRANSPARENT | SDL_WINDOW_BORDERLESS
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| SDL_WINDOW_NOT_FOCUSABLE
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| SDL_WINDOW_ALWAYS_ON_TOP,
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&st->win, &st->ren)) {
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fuck("win creation fail: %s", SDL_GetError());
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return SDL_APP_FAILURE;
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}
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babble("create test image...");
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st->test = SDL_calloc(1, sizeof(Image));
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if (!st->test) {
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fuck("mem alloc fail: %s", SDL_GetError());
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return SDL_APP_FAILURE;
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}
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st->test->data = stbi_load("test.png", &st->test->w, &st->test->h,
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&st->test->bpp, 4);
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if (!st->test->data) {
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fuck("mem alloc fail: %s", SDL_GetError());
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return SDL_APP_FAILURE;
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}
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sur = SDL_CreateSurfaceFrom(st->test->w, st->test->h,
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SDL_PIXELFORMAT_RGBA32, st->test->data,
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st->test->w * 4);
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if (!sur) {
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fuck("surface creation fail: %s", SDL_GetError());
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return SDL_APP_FAILURE;
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}
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st->test->tex = SDL_CreateTextureFromSurface(st->ren, sur);
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if (!st->test->tex) {
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fuck("surface creation fail: %s", SDL_GetError());
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SDL_DestroySurface(sur);
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return SDL_APP_FAILURE;
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}
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babble("hi!!");
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return SDL_APP_CONTINUE;
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}
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