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path: root/src/common/backend.h
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9 daysEnd every drag with one eventone-loopBerke Güzel
A drag that dropped on no YASL surface, such as one dropped on the desktop or canceled, ended unheard: the public drag start set no end listener. An application then waited for the drag's end forever. The public layer now listens for the end. When no surface got the drop, the origin gets DRAG with the new action YASL_DROP_CANCEL. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
9 daysPace frame requests by the frame presented after themBerke Güzel
A frame request now only records intent. Each loop step resolves it after the callbacks that present, so a request made before the present waits for that frame. An animation that asked first got two REFRESH events per frame on X11 and with GL. With no frame in flight, the REFRESH comes one refresh interval after the last present or answer, so a request without a present cannot spin. Queued events now go before an owed REFRESH. Input reaches the application before it draws, and a queued REFRESH pays an owed one for the same surface. The loop prepare only peeks at a lost event, so deliver can report it as a final loss. A failed push from another thread wakes the loop. Signals and posts run at the end of a step, after descriptors and timers. A signal handler now sees the output that came with it. A render-thread GL swap counts as in flight on Wayland. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
10 daysMake the loop public and let the display drive itBerke Güzel
An application that has its own descriptors and timers needed a second loop next to yasl's, and could not see yasl's key-repeat timer, clipboard pipes or reconnect timer. Now there is one wait: the application owns a yasl_loop, and yasl_init can run the display on it. - Public yasl_loop_*: descriptors, timers and signals. Descriptor callbacks return void. Timer IDs are 64 bits and never reused; a zero delay runs in the next step. A nested step or run fails with EBUSY, a step off the loop's thread with EPERM, and a quit made before a run ends it at once. An interrupted wait keeps its deadline. Creating a loop fails when it cannot make its wake pipe. - The display drives the loop through prepare, wait and check hooks instead of wrapping its step. Wayland finishes its read before any callback runs, so loop callbacks may create surfaces and do roundtrips. Readiness (queued events, an owed REFRESH) is derived in the step, so the wait never blocks over pending work. A draw that cannot proceed for want of a buffer is no longer counted as work. - yasl_init takes struct yasl_options. With loop and on_event, each step delivers events to on_event and yasl_wait_event fails with EBUSY. EALREADY only for the same options, EBUSY for others. - yasl_surface_request_frame: a REFRESH once the window can show a new frame, for pacing animation. - DISPLAY_LOST reports whether the display reconnects. Pull waits still fail with ENOTCONN after a final loss. - Events pushed from another thread wake the loop. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
10 daysAdd damage presentation and reduce CPU surface latencyBerke Güzel
Add yasl_cpu_present_damage to submit partial damage rectangles. Skip commit timers for CPU surfaces to prevent display delay. Remove frame callback gating in surface_draw_frame when free buffers exist. Flush the display immediately on CPU present. Forward tearing option to window specifications.
11 daysSimplify the public API into one dense headerBerke Güzel
yasl.h now holds everything except Vulkan: 45 functions instead of 62, and three installed headers instead of ten. - One constructor: yasl_surface_create takes CPU, GL or NATIVE, with zero-initialized GL options meaning 3.2 core, RGBA8, D24S8. - Events carry action, mods, x, y and text at the top level; pen positions are now logical like pointer positions. - yasl_cpu_pixels/yasl_cpu_present draw into one persistent canvas, cutting three full-frame copies per frame. - yasl_surface_get_info, yasl_surface_request, YASL_CURSOR_LOCKED, yasl_surface_set_text_input, yasl_surface_begin_move_resize and yasl_surface_get_native replace groups of narrower calls. - Interactive calls drop the decorative trigger event argument. - yasl_wait_event returns 0 only on timeout or yasl_wake, the refresh callback runs only in native modal loops, focus loss sends INPUT_RESET, and a lost event no longer fails every later wait. - Unsupported operations and bad arguments report ENOTSUP and EINVAL instead of EIO; the keycodes header no longer needs C23. - The shared library gets a versioned SONAME and version macros. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
11 daysRedefine public and rendering APIs with explicit contractsBerke Güzel
11 daysRemove deprecated Cocoa OpenGL and private compatibility APIsBerke Güzel
11 daysReconnect to a restarted Wayland compositorBerke Güzel
Windows now outlive the compositor. On connection loss YASL sends DISPLAY_LOST instead of closing every window, retries the connection on a loop timer, rebuilds each toplevel with its title, size, state and GL context, and sends DISPLAY_RESTORED. CPU windows keep their pixels; GPU renderers drop Vulkan surfaces and GL objects on loss and rebuild them on restore. - Free the dead connection's objects on the next wait, after the application has released GPU objects built on them. - Report a lost connection as an event rather than a failed wait. - Refuse window and Vulkan surface creation while offline with the new YASL_ERROR_DISCONNECTED. - Close popups, cancel drags and fail pending clipboard requests on loss. - Print only protocol errors, not ordinary disconnects. - Examples survive a restart; game.c rebinds its GL context. - Add an end-to-end test that kills Weston under CPU, GL and Vulkan windows and requires them to recover. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
11 daysSimplify the public event and CPU APIBerke Güzel
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>
12 dayspublic api refactorBerke Güzel
12 daysRead back the last presented CPU frameBerke Güzel
wsap_term writes PNG screenshots for its debug server and keeps its own copy of the frame because YASL had no readback. yasl_surface_read_pixels() copies the frame from the last successful present, or reports its extent when the buffer is too small. X11 and Cocoa keep it in their single CPU target until the next draw starts; X11 now also forgets it when a resize replaces the target, and Cocoa records the presented extent because a resize can change the size before the next draw. Wayland remembers which buffer it committed and forgets it when a draw reuses that buffer. The backend test checks the copy on Wayland and X11, and that draws that never present do not show through. The Cocoa path is not built or run here. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
12 daysReport the system double-click intervalBerke Güzel
wsap_term hardcodes 400 ms in three places to count clicks. yasl_display_double_click_ms() reads the interval from the system. X11 parses Net/DoubleClickTime from the XSETTINGS owner's property. Wayland has no protocol for it, so it asks the Settings portal for KDE's DoubleClickInterval, which KDE sends as a string and which exists only when the user set it, then GNOME's double-click. X11 without XSETTINGS asks the portal too. Cocoa reads NSEvent.doubleClickInterval. Missing or implausible values give YASL_DOUBLE_CLICK_MS_DEFAULT, 400 ms. The X11 state test covers the XSETTINGS parser in both byte orders and with truncation. The Xwayland test owns the settings selection. The desktop test serves both portal keys. The Cocoa path is not built or run here. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
12 daysAdd desktop services: open URI, notify, appearance, bell, and pathsBerke Güzel
wsap_term keeps per-platform code for opening links, notifications, the bell, high-contrast detection, the executable and bundle paths, and the default locale. These now live behind <yasl/desktop.h>. On Linux, src/platform/freedesktop serves both backends. Opening a URI runs xdg-open from PATH through a double fork, so the opener gets default signal dispositions, an empty mask, a new session, and none of the application's descriptors. Notifications and the Settings portal use the session bus through libdbus-1, an optional dependency behind -Ddbus. Appearance falls back to GTK_THEME without a portal. The bell uses xdg-system-bell on Wayland and the XKB bell on X11. Cocoa implements the same calls with NSWorkspace, UserNotifications, the effective appearance, NSBeep, the bundle, and CFLocale. That code is not built or run here; it needs a macOS check. The desktop test runs under dbus-run-session against a fake notification server and portal, and uses a fake xdg-open to check argument passing, signal state, and descriptor inheritance. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
12 daysUnify core and runner events into struct yasl_eventBerke Güzel
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>
12 daysSimplify surface state, examples, and library installationBerke Güzel
12 daysrename and simplificationBerke Güzel
13 daysfeat: implement modern Approach A app runner, unified events, notepad, and ↵Berke Güzel
game examples
13 daysUnify surface input queue, frame clock, and optimize scaling and timersBerke Güzel
13 daysperf: unify platform-independent state, branchless queue masking and native ↵Berke Güzel
handle caching
13 daysrefactor: simplify public API and isolate native extensionsBerke Güzel
Separate loop/timer and native interoperability APIs from the portable surface header. Unify dispatch, geometry queries, and timer callbacks; keep framebuffer bookkeeping and frame clocks private, and hide implementation symbols. Update backends, documentation, examples, and API/integration coverage. Verify exports, strict C/C++ installed consumers, and normal plus ASan/UBSan suites.
13 daysfeat: add SDL3-style surface, display, and loop timer API for X11, Wayland, ↵Berke Güzel
and Cocoa
13 daysmissing impls and hardeningBerke Güzel
13 daysMerge branch 'backend-selection' into mainBerke Güzel
- Implement runtime backend selection (Wayland, X11, Cocoa) - Add native X11 backend with clipboard, keyboard, mouse, and placement - Integrate multi-backend integration tests running under Weston and Xwayland - Retain zero-hole struct packing, branchless ALU/LUT primitives, and paced event loop
13 daysfeat: backend selection (Wayland, X11, Cocoa)Berke Güzel