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, 16 insertions, 79 deletions

diff --git a/tests/test_api.cpp b/tests/test_api.cpp
index c5859cd..c0693eb 100644
--- a/tests/test_api.cpp
+++ b/tests/test_api.cpp
@@ -1,89 +1,26 @@
-#include "yasl/native.h"
-#include "yasl/app.h"
+#include <yasl/yasl.h>
+#include <yasl/cpu.h>
+#include <yasl/gl.h>
+#include <yasl/metal.h>
+#include <yasl/desktop.h>
+#if YASL_HAS_VULKAN
+#include <yasl/vulkan.h>
+#endif
 #if YASL_HAS_WAYLAND
-#include "yasl/native/wayland.h"
+#include <yasl/native/wayland.h>
 #endif
 #if YASL_HAS_X11
-#include "yasl/native/x11.h"
+#include <yasl/native/x11.h>
 #endif
 #if YASL_HAS_COCOA
-#include "yasl/native/cocoa.h"
+#include <yasl/native/cocoa.h>
 #endif
-#include "yasl/desktop.h"
-#include "yasl/loop.h"
-#include <yasl/timing.h>
-#include <yasl/yasl.h>
 #include <cassert>
-
 int main()
 {
-    yasl_window_cbs callbacks{};
-    yasl_window_spec window{};
-    window.size = {640, 480};
-    window.cbs = &callbacks;
-    window.ud = &window;
-    assert(!yasl_surface_create_toplevel(nullptr, &window));
-    assert(!yasl_surface_create_native(nullptr, &window, &window));
-
-    yasl_timing timing = yasl_surface_timing(nullptr);
-    assert(timing.source == YASL_TIMING_UNKNOWN);
-    assert(yasl_scale_to_device(10.0, 240) == 20);
-    yasl_geometry geometry = yasl_surface_geometry(nullptr);
-    assert(geometry.scale_120 == YASL_SCALE_UNIT);
-    assert(!yasl_display_get_native_handle(nullptr));
-    assert(!yasl_surface_get_native_handle(nullptr));
-    yasl_native_frame native{};
-    assert(!yasl_surface_get_native_frame(nullptr, nullptr, &native));
-
-    yasl_loop *loop = yasl_loop_create();
-    assert(loop);
-    assert(yasl_loop_step(loop, 0) >= 0);
-    yasl_loop_destroy(loop);
-
-    yasl_message message{};
-    assert(!yasl_display_post(nullptr, &message));
-    assert(!yasl_frame_present(nullptr, nullptr, 0));
-    assert(!yasl_display_poll_event(nullptr, nullptr));
-    assert(!yasl_surface_set_size(nullptr, {640, 480}));
-    assert(!yasl_surface_set_fullscreen(nullptr, true));
-    assert(!yasl_surface_set_maximized(nullptr, true));
-    assert(!yasl_surface_minimize(nullptr));
-    assert(!yasl_surface_set_pacing(nullptr, YASL_PACING_CONTINUOUS));
-    assert(!yasl_surface_set_callbacks(nullptr, nullptr, nullptr));
-    assert(!yasl_clipboard_set(nullptr, YASL_CLIPBOARD, ""));
-    assert(!yasl_clipboard_request(nullptr, YASL_CLIPBOARD));
-    assert(!yasl_app_window(nullptr));
-    yasl_app_exit(nullptr, YASL_APP_ERROR);
-
-    yasl_event event{};
-    event.key.key = YASL_KEY_A;
-    assert(event.key.key == YASL_KEY_A);
-    event.pointer.scroll = {0.25, -0.5};
-    assert(event.pointer.scroll.x == 0.25 && event.pointer.scroll.y == -0.5);
-    assert(!yasl_surface_poll_event(nullptr, &event));
-    assert(!yasl_display_drag_start(nullptr, nullptr, nullptr, nullptr, nullptr));
-    assert(!yasl_surface_drag_carry(nullptr, {0, 0}));
-
-#if YASL_HAS_WAYLAND
-    assert(!yasl_wayland_display_get_wl_display(nullptr));
-    assert(!yasl_wayland_surface_get_wl_surface(nullptr));
-#endif
-
-#if YASL_HAS_X11
-    assert(!yasl_x11_display_get_display(nullptr));
-    assert(!yasl_x11_surface_get_window(nullptr));
-#endif
-
-#if YASL_HAS_COCOA
-    assert(!yasl_cocoa_display_get_application(nullptr));
-    assert(!yasl_cocoa_surface_get_window(nullptr));
-    assert(!yasl_cocoa_surface_get_view(nullptr));
-#endif
-
-    assert(!yasl_display_open_uri(nullptr, "https://example.com"));
-    assert(yasl_display_appearance(nullptr) == 0);
-    assert(!yasl_surface_bell(nullptr));
-    assert(yasl_executable_path(nullptr, 0) > 0);
-
-    return 0;
+    yasl_event e{};
+    e.pen.x=1.5;e.pen.pressure=0.25;
+    assert(e.pen.pressure==0.25);
+    assert(!yasl_surface_create("invalid",-1,10,0));
+    yasl_shutdown();return 0;
 }