1 files changed, 97 insertions, 0 deletions
diff --git a/examples/simple_window.c b/examples/simple_window.c
new file mode 100644
index 0000000..41a5375
--- /dev/null
+++ b/examples/simple_window.c
@@ -0,0 +1,97 @@
+#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;
+}