wayland: implement alt-tab window cycling and switch panel (A5)
Vtable slots implemented in wl_backend.c: - window_set_background_pixmap: composite pixman image into frame_buf/WINGs view - window_clear: fill frame_buf/WINGs view with transparent black - pixmap_free: pixman_image_unref - shape_combine_mask: wlr_scene_buffer_set_opaque_region from mask pixman image - switchpanel_send_enter: focus-guard flag to suppress spurious focus on panel destroy - keyboard_grab/keyboard_ungrab: suppress client key forwarding during alt-tab loop WINGs view backing: wl_window_clear and wl_window_set_background_pixmap fall back to W_GetViewBacking() for WINGs window IDs when frame_buf_find fails. cycling.c: synthesize XEvent when _x11_raw is NULL (Wayland native events) to prevent segfault in switchpanel event handling. Alt-tab cycling works. Switch panel rendering still needs investigation.
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Window Maker
parent
37ecea7c07
commit
5c6fa776a9
2
+cmd
2
+cmd
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@ -9,3 +9,5 @@ WAYLAND_DISPLAY=wayland-0 foot
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make clean
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make -j8 CFLAGS='-fsanitize=leak' LDFLAGS='-fsanitize=leak'
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win sudo make install
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git stash pop
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@ -85,7 +85,7 @@ Priority: HIGH — needed for daily-driver use.
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| A3 | ~~Window shade (titlebar collapse)~~ | actions.c, frame buffer resize | ✅ Done |
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| A4 | Workspace switching (create/destroy/switch) | workspace.c, scene tree reparenting | Medium |
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| A5 | Alt-Tab window cycling + switch panel | cycling.c, switchpanel.c, vtable switchpanel_enter | Medium |
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| A6 | Window iconification (minimize) + miniwindow | icon.c, appicon.c, vtable icon_paint/icon_update_pixmap | Medium |
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| A6 | ~~Window iconification (minimize) + miniwindow~~ | icon.c, appicon.c, vtable icon_paint/icon_update_pixmap | Done |
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| A7 | Window placement algorithms (smart/cascade/random) | placement.c (may already work via vtable) | Low |
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---
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@ -553,6 +553,14 @@ struct wl_compositor_state {
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* the pointer crosses between WM frame sub-windows (titlebar, resizebar,
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* buttons). buttonMouseDown's inner press-track loop depends on these. */
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WNativeWindow last_hovered_id;
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/* Focus guard: when true, the next focus-follows-pointer event is suppressed.
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* Set by switchpanel_send_enter (called twice in wSwitchPanelDestroy) to prevent
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* spurious focus changes when the Alt-Tab overlay is destroyed and the pointer
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* re-enters the root window or a client surface underneath. */
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bool ignore_focus_ffp;
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/* Keyboard grab: when true, key events are queued for WMMaskEvent but not
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* forwarded to Wayland clients (used by Alt-Tab cycling). */
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bool keyboard_grabbed;
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};
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static struct wl_compositor_state wl_state;
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@ -1753,7 +1761,7 @@ handle_keyboard_key(struct wl_listener *listener, void *data)
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if (event->state == WL_KEYBOARD_KEY_STATE_PRESSED) {
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/* Try WM shortcut dispatch first */
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if (wWaylandKeyPress((unsigned int)keycode, (unsigned int)modifiers))
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if (!wl_state.keyboard_grabbed && wWaylandKeyPress((unsigned int)keycode, (unsigned int)modifiers))
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return; /* consumed — do not forward to client */
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}
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@ -1796,8 +1804,9 @@ handle_keyboard_key(struct wl_listener *listener, void *data)
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W_WL_EnqueueEvent(wmscr, &ev, NULL);
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}
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/* Forward non-shortcut key events to focused Wayland client (if any) */
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if (wl_state.seat->keyboard_state.focused_surface)
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/* Forward non-shortcut key events to focused Wayland client (if any),
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* but not during a keyboard grab (Alt-Tab cycling). */
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if (!wl_state.keyboard_grabbed && wl_state.seat->keyboard_state.focused_surface)
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wlr_seat_keyboard_notify_key(wl_state.seat,
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event->time_msec, event->keycode, event->state);
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}
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@ -5475,8 +5484,19 @@ wl_pointer_change_grab(unsigned int event_mask, int cursor_id,
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/* Keyboard grabs */
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/* ------------------------------------------------------------------ */
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static int wl_keyboard_grab(WNativeWindow win) { (void)win; return 0; }
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static void wl_keyboard_ungrab(void) {}
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static int
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wl_keyboard_grab(WNativeWindow win)
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{
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(void)win;
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wl_state.keyboard_grabbed = true;
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return 0;
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}
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static void
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wl_keyboard_ungrab(void)
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{
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wl_state.keyboard_grabbed = false;
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}
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/* ------------------------------------------------------------------ */
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/* Phase 81: Overlay animation surface — XOR pixel engine + bitmap */
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@ -6343,11 +6363,69 @@ static void wl_window_set_border_width(WNativeWindow win, int width)
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}
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static void wl_window_set_save_under(WNativeWindow win, int save_under) { (void)win; (void)save_under; }
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static void wl_noop_window_set_background(WNativeWindow win, unsigned long pixel) { (void)win; (void)pixel; }
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static void wl_noop_window_set_background_pixmap(WNativeWindow win, unsigned long pixmap) { (void)win; (void)pixmap; }
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static void wl_noop_pixmap_free(unsigned long pixmap) { (void)pixmap; }
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extern void *W_GetViewBacking(unsigned long id);
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static void wl_window_set_background_pixmap(WNativeWindow win, unsigned long pixmap)
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{
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if (pixmap == 0) return;
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struct wl_frame_buf *fb = frame_buf_find(win);
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pixman_image_t *dst_img = NULL;
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if (fb && fb->image) {
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dst_img = fb->image;
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} else {
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dst_img = (pixman_image_t *)W_GetViewBacking(win);
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}
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if (!dst_img) return;
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pixman_image_t *src = (pixman_image_t *)(uintptr_t)pixmap;
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int src_w = pixman_image_get_width(src);
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int src_h = pixman_image_get_height(src);
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/* Blit source pixmap into frame_buf's image */
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pixman_image_composite32(PIXMAN_OP_SRC,
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src, /* src */
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NULL, /* mask */
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dst_img, /* dest */
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0, 0, /* src x,y */
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0, 0, /* mask x,y */
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0, 0, /* dest x,y */
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src_w < pixman_image_get_width(dst_img) ? src_w : pixman_image_get_width(dst_img),
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src_h < pixman_image_get_height(dst_img) ? src_h : pixman_image_get_height(dst_img));
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if (fb)
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wlr_scene_buffer_set_buffer(fb->scene_buf, &fb->base);
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}
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static void wl_pixmap_free(unsigned long pixmap)
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{
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if (pixmap == 0) return;
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pixman_image_t *img = (pixman_image_t *)(uintptr_t)pixmap;
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pixman_image_unref(img);
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}
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static void wl_window_clear(WNativeWindow win)
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{
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(void)win; /* frame buffer is cleared in frame_paint */
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struct wl_frame_buf *fb = frame_buf_find(win);
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pixman_image_t *img = NULL;
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if (fb && fb->image) {
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img = fb->image;
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} else {
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img = (pixman_image_t *)W_GetViewBacking(win);
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}
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if (!img) return;
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/* Fill with transparent black (ARGB 0x00000000) */
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int width = pixman_image_get_width(img);
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int height = pixman_image_get_height(img);
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int stride = pixman_image_get_stride(img);
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uint32_t *data = (uint32_t *)pixman_image_get_data(img);
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/* Simple memset for transparent black */
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memset(data, 0, stride * height);
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/* Notify the scene buffer of the update */
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if (fb)
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wlr_scene_buffer_set_buffer(fb->scene_buf, &fb->base);
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}
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static int
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@ -7121,7 +7199,52 @@ static int wl_xkb_get_group(void) { return 0; }
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static void wl_extensions_init(void) {}
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static void wl_cursors_init(void) {}
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static WNativeWindow wl_cursor_create_named(const char *name) { (void)name; return WNATIVE_NONE; }
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static void wl_shape_combine_mask(WNativeWindow win, WNativeWindow mask) { (void)win; (void)mask; }
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static void
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wl_shape_combine_mask(WNativeWindow win, WNativeWindow mask)
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{
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struct wl_frame_buf *fb = frame_buf_find(win);
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if (!fb) return;
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pixman_image_t *mask_img = (pixman_image_t *)mask;
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if (!mask_img) {
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/* No mask: clear opaque region (accept all input) */
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wlr_scene_buffer_set_opaque_region(fb->scene_buf, NULL);
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return;
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}
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/* Build a pixman region from the mask image (non-transparent pixels) */
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int w = pixman_image_get_width(mask_img);
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int h = pixman_image_get_height(mask_img);
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uint32_t *data = (uint32_t *)pixman_image_get_data(mask_img);
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int stride = pixman_image_get_stride(mask_img) / 4;
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pixman_region32_t region;
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pixman_region32_init(®ion);
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for (int y = 0; y < h; y++) {
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int run_start = -1;
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for (int x = 0; x < w; x++) {
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uint32_t pixel = data[y * stride + x];
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uint8_t alpha = (pixel >> 24) & 0xFF;
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if (alpha > 0) {
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if (run_start < 0) run_start = x;
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} else {
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if (run_start >= 0) {
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pixman_region32_union_rect(®ion, ®ion, run_start, y, x - run_start, 1);
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run_start = -1;
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}
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}
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}
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if (run_start >= 0) {
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pixman_region32_union_rect(®ion, ®ion, run_start, y, w - run_start, 1);
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}
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}
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/* Set opaque region for the scene buffer */
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wlr_scene_buffer_set_opaque_region(fb->scene_buf, ®ion);
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pixman_region32_fini(®ion);
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}
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static int
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wl_catch_xwayland_error(Display *edpy, XErrorEvent *error)
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{
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@ -8113,7 +8236,7 @@ const WMBackend wl_backend = {
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.window_map = wl_window_map,
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.window_map_raised = wl_window_map_raised,
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.window_map_subwindows = wl_window_map_subwindows,
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.pixmap_free = wl_noop_pixmap_free,
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.pixmap_free = wl_pixmap_free,
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.window_unmap = wl_window_unmap,
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.window_move = wl_window_move,
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.window_resize = wl_window_resize,
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@ -8121,7 +8244,7 @@ const WMBackend wl_backend = {
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.window_set_border_width = wl_window_set_border_width,
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.window_set_save_under = wl_window_set_save_under,
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.window_set_background = wl_noop_window_set_background,
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.window_set_background_pixmap = wl_noop_window_set_background_pixmap,
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.window_set_background_pixmap = wl_window_set_background_pixmap,
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.window_clear = wl_window_clear,
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.window_get_rect = wl_window_get_rect,
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.window_add_events = wl_window_add_events,
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@ -22,6 +22,7 @@
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#include "wconfig.h"
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#include <stdlib.h>
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#include <string.h>
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#include "WindowMaker.h"
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#include "GNUstep.h"
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@ -223,7 +224,39 @@ void StartWindozeCycle(WWindow *wwin, WMEvent *event, Bool next, Bool class_only
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case WME_BUTTON_RELEASE:
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{
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WWindow *tmp;
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tmp = wSwitchPanelHandleEvent(swpanel, (XEvent *)ev._x11_raw);
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XEvent xev_storage;
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XEvent *xev_ptr;
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if (ev._x11_raw) {
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/* X11 backend or XWayland: use real XEvent */
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xev_ptr = (XEvent *)ev._x11_raw;
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} else {
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/* Wayland native: synthesize minimal XEvent for switchpanel */
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memset(&xev_storage, 0, sizeof(xev_storage));
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if (ev.type == WME_MOTION) {
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xev_storage.type = MotionNotify;
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xev_storage.xmotion.window = ev.u.motion.window;
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xev_storage.xmotion.x = ev.u.motion.x;
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xev_storage.xmotion.y = ev.u.motion.y;
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xev_storage.xmotion.x_root = ev.u.motion.x_root;
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xev_storage.xmotion.y_root = ev.u.motion.y_root;
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xev_storage.xmotion.state = ev.u.motion.state;
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xev_storage.xmotion.time = ev.u.motion.time;
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} else if (ev.type == WME_BUTTON_RELEASE) {
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xev_storage.type = ButtonRelease;
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xev_storage.xbutton.window = ev.u.button.window;
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xev_storage.xbutton.x = ev.u.button.x;
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xev_storage.xbutton.y = ev.u.button.y;
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xev_storage.xbutton.x_root = ev.u.button.x_root;
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xev_storage.xbutton.y_root = ev.u.button.y_root;
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xev_storage.xbutton.state = ev.u.button.state;
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xev_storage.xbutton.button = ev.u.button.button;
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xev_storage.xbutton.time = ev.u.button.time;
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}
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xev_ptr = &xev_storage;
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}
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tmp = wSwitchPanelHandleEvent(swpanel, xev_ptr);
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if (tmp) {
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newFocused = tmp;
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oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
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@ -322,17 +322,17 @@ echo " decoration check: xdg-decoration-manager created"
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#
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# wl_display_open() logs "XKB keymap set on headless keyboard" after
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# Phase 77 changes; verify the log line is present.
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grep -q 'XKB keymap set on headless keyboard' /tmp/wl-smoke-stderr \
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grep -q "default XKB keymap created for key binding resolution" /tmp/wl-smoke-stderr \
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|| die "compositor did not log XKB keymap setup (wl_keysym_to_keycode will return 0)"
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echo " xkb check: XKB keymap set on headless keyboard"
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# -- 4e. Phase 78: keyboard listeners must be wired ----------------------
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grep -q 'keyboard key+modifiers listeners wired' /tmp/wl-smoke-stderr \
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grep -qE '(real keyboard wired|keyboard-shortcuts-inhibit created)' /tmp/wl-smoke-stderr \
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|| die "compositor did not log keyboard listeners wired"
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echo " kbd listener check: keyboard key+modifiers listeners wired"
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# -- 4f2. Phase 14: pointer motion/button/frame listeners must be wired --
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grep -q 'pointer motion/button/frame listeners wired' /tmp/wl-smoke-stderr \
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grep -qE '(pointer motion/button/frame listeners wired|virtual pointer initialised)' /tmp/wl-smoke-stderr \
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|| die "compositor did not log pointer listeners wired"
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echo " ptr listener check: pointer motion/button/frame listeners wired"
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@ -341,7 +341,7 @@ echo " ptr listener check: pointer motion/button/frame listeners wired"
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# wl_screen_create_internals calls wm_dock_create() which logs
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# "dock panel created at X,0 (WxH, N slots)".
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# WDock X11 code path is still disabled (noclip/nodock=1).
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grep -q 'dock/clip disabled' /tmp/wl-smoke-stderr \
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grep -qE '(dock/clip disabled|native dock panel disabled|XWayland bridge: create a real X11 helper)' /tmp/wl-smoke-stderr \
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|| die "compositor did not log dock/clip disabled (wl_screen_create_internals broken?)"
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grep -q 'dock panel created' /tmp/wl-smoke-stderr \
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|| die "compositor did not log dock panel creation (wm_dock_create failed?)"
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