diff options
Diffstat (limited to 'contrib/SDL-3.2.8/examples/renderer/18-debug-text/debug-text.c')
| -rw-r--r-- | contrib/SDL-3.2.8/examples/renderer/18-debug-text/debug-text.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/contrib/SDL-3.2.8/examples/renderer/18-debug-text/debug-text.c b/contrib/SDL-3.2.8/examples/renderer/18-debug-text/debug-text.c new file mode 100644 index 0000000..62005e6 --- /dev/null +++ b/contrib/SDL-3.2.8/examples/renderer/18-debug-text/debug-text.c | |||
| @@ -0,0 +1,80 @@ | |||
| 1 | /* | ||
| 2 | * This example creates an SDL window and renderer, and then draws some text | ||
| 3 | * using SDL_RenderDebugText() every frame. | ||
| 4 | * | ||
| 5 | * This code is public domain. Feel free to use it for any purpose! | ||
| 6 | */ | ||
| 7 | |||
| 8 | #define SDL_MAIN_USE_CALLBACKS 1 /* use the callbacks instead of main() */ | ||
| 9 | #include <SDL3/SDL.h> | ||
| 10 | #include <SDL3/SDL_main.h> | ||
| 11 | |||
| 12 | /* We will use this renderer to draw into this window every frame. */ | ||
| 13 | static SDL_Window *window = NULL; | ||
| 14 | static SDL_Renderer *renderer = NULL; | ||
| 15 | |||
| 16 | #define WINDOW_WIDTH 640 | ||
| 17 | #define WINDOW_HEIGHT 480 | ||
| 18 | |||
| 19 | /* This function runs once at startup. */ | ||
| 20 | SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[]) | ||
| 21 | { | ||
| 22 | SDL_SetAppMetadata("Example Renderer Debug Texture", "1.0", "com.example.renderer-debug-text"); | ||
| 23 | |||
| 24 | if (!SDL_Init(SDL_INIT_VIDEO)) { | ||
| 25 | SDL_Log("Couldn't initialize SDL: %s", SDL_GetError()); | ||
| 26 | return SDL_APP_FAILURE; | ||
| 27 | } | ||
| 28 | |||
| 29 | if (!SDL_CreateWindowAndRenderer("examples/renderer/debug-text", WINDOW_WIDTH, WINDOW_HEIGHT, 0, &window, &renderer)) { | ||
| 30 | SDL_Log("Couldn't create window/renderer: %s", SDL_GetError()); | ||
| 31 | return SDL_APP_FAILURE; | ||
| 32 | } | ||
| 33 | |||
| 34 | return SDL_APP_CONTINUE; /* carry on with the program! */ | ||
| 35 | } | ||
| 36 | |||
| 37 | /* This function runs when a new event (mouse input, keypresses, etc) occurs. */ | ||
| 38 | SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event) | ||
| 39 | { | ||
| 40 | if (event->type == SDL_EVENT_QUIT) { | ||
| 41 | return SDL_APP_SUCCESS; /* end the program, reporting success to the OS. */ | ||
| 42 | } | ||
| 43 | return SDL_APP_CONTINUE; /* carry on with the program! */ | ||
| 44 | } | ||
| 45 | |||
| 46 | /* This function runs once per frame, and is the heart of the program. */ | ||
| 47 | SDL_AppResult SDL_AppIterate(void *appstate) | ||
| 48 | { | ||
| 49 | const int charsize = SDL_DEBUG_TEXT_FONT_CHARACTER_SIZE; | ||
| 50 | |||
| 51 | /* as you can see from this, rendering draws over whatever was drawn before it. */ | ||
| 52 | SDL_SetRenderDrawColor(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE); /* black, full alpha */ | ||
| 53 | SDL_RenderClear(renderer); /* start with a blank canvas. */ | ||
| 54 | |||
| 55 | SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE); /* white, full alpha */ | ||
| 56 | SDL_RenderDebugText(renderer, 272, 100, "Hello world!"); | ||
| 57 | SDL_RenderDebugText(renderer, 224, 150, "This is some debug text."); | ||
| 58 | |||
| 59 | SDL_SetRenderDrawColor(renderer, 51, 102, 255, SDL_ALPHA_OPAQUE); /* light blue, full alpha */ | ||
| 60 | SDL_RenderDebugText(renderer, 184, 200, "You can do it in different colors."); | ||
| 61 | SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE); /* white, full alpha */ | ||
| 62 | |||
| 63 | SDL_SetRenderScale(renderer, 4.0f, 4.0f); | ||
| 64 | SDL_RenderDebugText(renderer, 14, 65, "It can be scaled."); | ||
| 65 | SDL_SetRenderScale(renderer, 1.0f, 1.0f); | ||
| 66 | SDL_RenderDebugText(renderer, 64, 350, "This only does ASCII chars. So this laughing emoji won't draw: 🤣"); | ||
| 67 | |||
| 68 | SDL_RenderDebugTextFormat(renderer, (float) ((WINDOW_WIDTH - (charsize * 46)) / 2), 400, "(This program has been running for %" SDL_PRIu64 " seconds.)", SDL_GetTicks() / 1000); | ||
| 69 | |||
| 70 | SDL_RenderPresent(renderer); /* put it all on the screen! */ | ||
| 71 | |||
| 72 | return SDL_APP_CONTINUE; /* carry on with the program! */ | ||
| 73 | } | ||
| 74 | |||
| 75 | /* This function runs once at shutdown. */ | ||
| 76 | void SDL_AppQuit(void *appstate, SDL_AppResult result) | ||
| 77 | { | ||
| 78 | /* SDL will clean up the window/renderer for us. */ | ||
| 79 | } | ||
| 80 | |||
