Atlas - locale.c
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[FILE BEGIN]
1/*
2 * This example code reports the currently selected locales.
3 *
4 * This code is public domain. Feel free to use it for any purpose!
5 */
6
7#define SDL_MAIN_USE_CALLBACKS 1  /* use the callbacks instead of main() */
8#include <SDL3/SDL.h>
9#include <SDL3/SDL_main.h>
10
11/* We will use this renderer to draw into this window every frame. */
12static SDL_Window *window = NULL;
13static SDL_Renderer *renderer = NULL;
14
15/* This function runs once at startup. */
16SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
17{
18    SDL_SetAppMetadata("Example Misc Locale", "1.0", "com.example.misc-locale");
19
20    if (!SDL_Init(SDL_INIT_VIDEO)) {
21        SDL_Log("Couldn't initialize SDL: %s", SDL_GetError());
22        return SDL_APP_FAILURE;
23    }
24
25    if (!SDL_CreateWindowAndRenderer("examples/misc/locale", 640, 480, SDL_WINDOW_RESIZABLE, &window, &renderer)) {
26        SDL_Log("Couldn't create window/renderer: %s", SDL_GetError());
27        return SDL_APP_FAILURE;
28    }
29    SDL_SetRenderLogicalPresentation(renderer, 640, 480, SDL_LOGICAL_PRESENTATION_LETTERBOX);
30
31    return SDL_APP_CONTINUE;  /* carry on with the program! */
32}
33
34/* This function runs when a new event (mouse input, keypresses, etc) occurs. */
35SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event)
36{
37    if (event->type == SDL_EVENT_QUIT) {
38        return SDL_APP_SUCCESS;  /* end the program, reporting success to the OS. */
39    }
40    return SDL_APP_CONTINUE;  /* carry on with the program! */
41}
42
43/* This function runs once per frame, and is the heart of the program. */
44SDL_AppResult SDL_AppIterate(void *appstate)
45{
46    const SDL_FRect frame = { 0, 0, 640, 480 };
47    SDL_Locale **locales;
48    char msg[128];
49    int count, i;
50    float x, y;
51
52    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
53    SDL_RenderClear(renderer);
54
55    locales = SDL_GetPreferredLocales(&count);
56    if (!locales) {
57        x = frame.x + ((frame.w - (SDL_DEBUG_TEXT_FONT_CHARACTER_SIZE * SDL_strlen(msg))) / 2.0f);
58        y = frame.y;
59        SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
60        SDL_RenderDebugText(renderer, x, y, msg);
61    } else {
62        SDL_snprintf(msg, sizeof (msg), "Locales, in order of preference (%d total):", count);
63
64        x = frame.x + ((frame.w - (SDL_DEBUG_TEXT_FONT_CHARACTER_SIZE * SDL_strlen(msg))) / 2.0f);
65        y = frame.y;
66        SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
67        SDL_RenderDebugText(renderer, x, y, msg);
68
69        for (i = 0; locales[i]; ++i) {
70            const SDL_Locale *l = locales[i];
71            const char *c = l->country;
72
73            SDL_snprintf(msg, sizeof (msg), " - %s%s%s", l->language, c ? "_" : "", c ? c : "");
74
75            x = frame.x + ((frame.w - (SDL_DEBUG_TEXT_FONT_CHARACTER_SIZE * SDL_strlen(msg))) / 2.0f);
76            y = frame.y + ((SDL_DEBUG_TEXT_FONT_CHARACTER_SIZE * 2) * (i + 1));
77            SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
78            SDL_RenderDebugText(renderer, x, y, msg);
79        }
80        SDL_free(locales);
81    }
82
83    /* put the new rendering on the screen. */
84    SDL_RenderPresent(renderer);
85
86    return SDL_APP_CONTINUE;  /* carry on with the program! */
87}
88
89/* This function runs once at shutdown. */
90void SDL_AppQuit(void *appstate, SDL_AppResult result)
91{
92    /* SDL will clean up the window/renderer for us. */
93}
94
95
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