Unify core and runner events into struct yasl_event

The core input queue and the yasl_run() runner each had their own event
type, and the runner translated one into the other. Both now share
struct yasl_event in <yasl/yasl.h>: yasl_surface_poll_event() returns the
same events the app event callback receives, so the runner forwards them
unchanged.

Pointer input becomes POINTER_DOWN/UP/MOTION/SCROLL/LEAVE with a named
yasl_pointer_button and a motion delta computed in the input queue. TEXT,
PASTE and DROP share one text payload, scale changes fold into
WINDOW_RESIZE, and every event carries a monotonic time_ns.
yasl_surface_set_mouse_mode() is replaced by
yasl_surface_set_pointer_mode(); no backend implements relative mode yet.

The export check now only counts YASL_API declarations, so function
pointer fields returning enum yasl_app_result are not mistaken for
exports.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 16 insertions, 15 deletions

diff --git a/examples/simple_window.c b/examples/simple_window.c
index e9e6545..fca2f75 100644
--- a/examples/simple_window.c
+++ b/examples/simple_window.c
@@ -87,7 +87,7 @@ static void on_draw(void *ud, struct yasl_surface *s, struct yasl_frame_context
     if (failed || smoke_test) yasl_surface_destroy(s);
 }
 
-static int on_init(void *ud, struct yasl_display *display)
+static enum yasl_app_result on_init(void *ud, struct yasl_display *display)
 {
     (void)ud;
     struct yasl_window_spec window_spec = {
@@ -123,19 +123,19 @@ static void pointer_sample(struct yasl_vector2i pos, enum yasl_pointer_device de
     pen_tilt_y = pen.tilt_y;
 }
 
-static int on_event(void *ud, const struct yasl_event *ev)
+static enum yasl_app_result on_event(void *ud, const struct yasl_event *ev)
 {
     (void)ud;
     switch (ev->type) {
-    case YASL_EVENT_WINDOW_CLOSE_REQUEST:
+    case YASL_EVENT_WINDOW_CLOSE:
         return YASL_APP_QUIT;
     case YASL_EVENT_WINDOW_RESIZE: {
         uint32_t flags = yasl_surface_state(ev->surface);
         const char *mode = flags & YASL_STATE_FULLSCREEN ? "fullscreen" :
             flags & YASL_STATE_MAXIMIZED ? "maximized" :
             flags & YASL_STATE_TILED ? "tiled" : "windowed";
-        printf("[YASL] Resized to %dx%d (scale: %.2fx, %s)\n", ev->resize.size.x,
-               ev->resize.size.y, (double)ev->resize.scale_120 / YASL_SCALE_UNIT, mode);
+        printf("[YASL] Resized to %dx%d (scale: %.2fx, %s)\n", ev->resize.geometry.size.x,
+               ev->resize.geometry.size.y, (double)ev->resize.geometry.scale_120 / YASL_SCALE_UNIT, mode);
         break;
     }
     case YASL_EVENT_KEY:
@@ -144,22 +144,23 @@ static int on_event(void *ud, const struct yasl_event *ev)
         if (ev->key.key == YASL_KEY_SPACE || ev->key.key == YASL_KEY_ENTER)
             color_theme++;
         break;
-    case YASL_EVENT_MOUSE_BUTTON:
-        pointer_sample(ev->mouse_button.pos, ev->mouse_button.device, ev->mouse_button.pen);
-        if (ev->mouse_button.button == 0) {
-            mouse_down = ev->mouse_button.pressed;
-            if (!mouse_down) pen_pressure = 0;
+    case YASL_EVENT_POINTER_DOWN:
+    case YASL_EVENT_POINTER_UP:
+    case YASL_EVENT_POINTER_MOTION:
+        pointer_sample(ev->pointer.pos, ev->pointer.device, ev->pointer.pen);
+        if (ev->type == YASL_EVENT_POINTER_DOWN && ev->pointer.button == YASL_BUTTON_PRIMARY) {
+            mouse_down = true;
+        } else if (ev->type == YASL_EVENT_POINTER_UP && ev->pointer.button == YASL_BUTTON_PRIMARY) {
+            mouse_down = false;
+            pen_pressure = 0;
         }
         break;
-    case YASL_EVENT_MOUSE_MOTION:
-        pointer_sample(ev->mouse_motion.pos, ev->mouse_motion.device, ev->mouse_motion.pen);
-        break;
-    case YASL_EVENT_WINDOW_FOCUS:
+    case YASL_EVENT_FOCUS:
         if (ev->focus.focused) return YASL_APP_CONTINUE;
         /* Fall through to cancel held input on focus loss. */
         [[fallthrough]];
     case YASL_EVENT_INPUT_RESET:
-    case YASL_EVENT_MOUSE_LEAVE:
+    case YASL_EVENT_POINTER_LEAVE:
         mouse_x = mouse_y = -1;
         mouse_down = false;
         pen_pressure = 0;