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#include "yasl/yasl.h"
#include <stdio.h>
#include <stdlib.h>
static bool running = true;
static void on_draw(struct yasl_surface *s, struct yasl_frame *frame, void *ud)
{
(void)ud;
int w = frame->target.size.x;
int h = frame->target.size.y;
uint32_t *pixels = frame->target.pixels;
if (pixels) {
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
uint8_t r = (uint8_t)((x * 255) / (w > 0 ? w : 1));
uint8_t g = (uint8_t)((y * 255) / (h > 0 ? h : 1));
uint8_t b = 128;
pixels[y * w + x] = (255u << 24) | (r << 16) | (g << 8) | b;
}
}
}
struct yasl_damage_list dmg = { .n = -1 };
yasl_surface_present(s, &frame->target, &dmg);
}
static void on_close(struct yasl_surface *s, void *ud)
{
(void)s;
(void)ud;
printf("Window close requested\n");
running = false;
}
static void on_quit(void *ud)
{
(void)ud;
running = false;
}
int main(void)
{
struct yasl_loop *loop = yasl_loop_create();
if (!loop) {
fprintf(stderr, "Failed to create event loop\n");
return 1;
}
struct yasl_display_cbs disp_cbs = { .quit = on_quit };
struct yasl_display_spec disp_spec = {
.app_id = "org.yasl.example",
.cbs = &disp_cbs,
};
struct yasl_display *d = yasl_display_open(loop, &disp_spec);
if (!d) {
fprintf(stderr, "Failed to open display\n");
yasl_loop_destroy(loop);
return 1;
}
struct yasl_surface_spec surf_spec = {
.title = "YASL Simple Window",
.size = { .x = 640, .y = 480 },
};
struct yasl_surface *s = yasl_surface_create_toplevel(d, &surf_spec);
if (!s) {
fprintf(stderr, "Failed to create surface\n");
yasl_display_close(d);
yasl_loop_destroy(loop);
return 1;
}
struct yasl_surface_cbs surf_cbs = {
.draw = on_draw,
.close = on_close,
};
yasl_surface_set_callbacks(s, &surf_cbs, NULL);
yasl_surface_schedule_redraw(s);
while (running) {
yasl_display_dispatch(d);
struct yasl_input_event ev;
while (yasl_surface_input_poll(s, &ev)) {
if (ev.kind == YASL_INPUT_KEY && ev.key.action == YASL_KEY_PRESS) {
printf("Key pressed: keysym=%u\n", ev.key.key);
if (ev.key.key == 0xff1b) /* Escape */
running = false;
}
}
yasl_display_flush(d);
}
yasl_surface_destroy(s);
yasl_display_close(d);
yasl_loop_destroy(loop);
return 0;
}
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