Simplify the public event and CPU API

Applications now need far less ceremony: hello.c is a 20-line loop that
handles REFRESH, CLOSE and QUIT and draws into the surface's own pixels.

- Fold GEOMETRY, STATE and FOCUS into one WINDOW event carrying size,
  scale and state; unchanged values send nothing.
- Guarantee REFRESH once a window has a size and after every resize,
  never at size zero.
- Merge DROP_HOVER into DROP with over/leave/data actions and give drag
  and drop actions enums.
- Keep event strings valid until the next wait and drop
  yasl_event_release; empty or failed waits report NONE.
- Replace copy-in presentation with a lent pixel buffer:
  yasl_cpu_pixels and yasl_cpu_present.
- Remove yasl_poll_event, yasl_cpu_read_pixels, unused event fields and
  comments that restated names.
- Wayland: resize floating windows in request_size instead of reporting
  it unsupported, and stop marking new GPU surfaces as Vulkan so
  yasl_vulkan_create_surface no longer fails with NATIVE_WINDOW_IN_USE.

Also includes the in-progress public API refactor that was uncommitted
in the tree (removal of the app/loop layer, new surface, GL and Vulkan
entry points).

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

1 files changed, 7 insertions, 7 deletions

diff --git a/src/platform/x11/native.c b/src/platform/x11/native.c
index 249adec..fffe171 100644
--- a/src/platform/x11/native.c
+++ b/src/platform/x11/native.c
@@ -1,14 +1,14 @@
 #include "common/backend.h"
-#include "yasl/native/x11.h"
+#include "common/private_native_x11.h"
 
-Display *yasl_x11_display_get_display(struct yasl_display *d)
+Display *yasl_private_x11_display_get_display(struct yasl_private_display *d)
 {
-    return (d && yasl_display_backend(d) == YASL_BACKEND_X11) ?
-        (Display *)yasl_display_get_native_handle(d) : NULL;
+    return (d && yasl_private_display_backend(d) == YASL_PRIVATE_BACKEND_X11) ?
+        (Display *)yasl_private_display_get_native_handle(d) : NULL;
 }
 
-uintptr_t yasl_x11_surface_get_window(struct yasl_surface *s)
+uintptr_t yasl_private_x11_surface_get_window(struct yasl_surface *s)
 {
-    return (s && s->display && yasl_display_backend(s->display) == YASL_BACKEND_X11) ?
-        (uintptr_t)yasl_surface_get_native_handle(s) : 0;
+    return (s && s->display && yasl_private_display_backend(s->display) == YASL_PRIVATE_BACKEND_X11) ?
+        (uintptr_t)yasl_private_surface_get_native_handle(s) : 0;
 }