smgui/examples/events.c

/*
 * src/events.c
 * https://gitlab.com/bztsrc/smgui
 *
 * Copyright (C) 2024 bzt (bztsrc@gitlab), MIT license
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL ANY
 * DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
 * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * @brief State-Mode GUI events demo program
 */

#define UI_IMPLEMENTATION
#include <ui.h>

int main(int argc, char **argv)
{
    /* strings are gathered into an array so that you can change the language on-the-fly */
    char *lang[] = { "Events demo", "Events will be printed to stdout" };

    ui_event_t *evt;
    ui_t ctx;
    ui_form_t form[] = {
        { .type = UI_LABEL, .x = 5, .y = 5, .label = 1 },
        { .type = UI_END }
    };

    /* initialize the UI context, pass it the string array, the window size and icon */
    ui_init(&ctx, 2, lang, 640, 480, NULL);

    /* wait until user closes the window */
    while((evt = ui_event(&ctx, form))) {
        /* if Esc is pressed, exit (should be '\e', but not all C compiler likes that) */
        if(evt->type == UI_EVT_KEY && evt->key[0] == 0x1b) break;
        /* print event to stdout */
        switch(evt->type) {
            case UI_EVT_MOUSE:
                printf("mouse   btn=%06x x=%d y=%d\n", evt->btn, evt->x, evt->y);
            break;
            case UI_EVT_GAMEPAD:
                printf("gamepad btn=%06x x=%d y=%d rx=%d ry=%d key=%d\n", evt->btn, evt->x, evt->y, evt->rx, evt->ry, evt->key[0]);
            break;
            case UI_EVT_KEY:
                printf("key     btn=%06x key='%s'\n", evt->btn, evt->key);
            break;
            case UI_EVT_DROP:
                printf("drop    btn=%06x x=%d y=%d fn='%s'\n", evt->btn, evt->x, evt->y, evt->fn);
            break;
            case UI_EVT_RESIZE:
                printf("resize  x=%d y=%d\n", evt->x, evt->y);
            break;
        }
    }

    /* destroy window, free resources */
    ui_free(&ctx);

    (void)argc; (void)argv;
    return 0;
}