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wl_backend: fix resizebar texture and client frame_rel update on resize 

1. Resizebar: wl_frame_paint_resizebar was painting a flat color buffer
   over the textured resizebar rendered by wl_frame_paint. Make it a
   no-op since the parent frame buffer has the correct texture.

2. Resize gap: client_synth_configure updates the client scene_node
   position but was not updating frame_rel_x/y. When frame_configure
   ran next (e.g. on subsequent move), it would recompute the client
   position using stale frame_rel values, causing the surface to jump.
   Now updates frame_rel_x/y from the new absolute position.
This commit is contained in:
Ollie 2026-05-23 19:26:06 +02:00
parent f88dfac8b9
commit 2d5c80f332
1 changed files with 11 additions and 25 deletions
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36
src/backend/wayland/wl_backend.c
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@ -6904,6 +6904,14 @@ wl_client_synth_configure(WNativeWindow client_win,
/* Phase 18: keep scene node in sync. */
if (v->scene_node)
wlr_scene_node_set_position(&v->scene_node->node, x, y);
/* Update relative offset so frame_configure keeps us in sync. */
if (v->frame_id) {
struct wl_frame_buf *pfb = frame_buf_find(v->frame_id);
if (pfb) {
v->frame_rel_x = x - pfb->x;
v->frame_rel_y = y - pfb->y;
}
}
if (v->xw_surface) {
wlr_xwayland_surface_configure(v->xw_surface,
(int16_t)x, (int16_t)y,
@ -8519,31 +8527,9 @@ static unsigned long wl_keysym_from_name(const char *name)
static void wl_frame_paint_resizebar(WFrameWindow *fwin)
{
if (!fwin->resizebar || !fwin->resizebar->window)
return;
struct wl_frame_buf *fb = frame_buf_find((WNativeWindow)fwin->resizebar->window);
if (!fb || !fb->image)
return;
uint32_t *dst = (uint32_t *)pixman_image_get_data(fb->image);
int stride = pixman_image_get_stride(fb->image) / 4;
uint32_t bg = 0xFFAEAAAE;
uint32_t light = 0xFFDDDDDD;
uint32_t dark = 0xFF555555;
/* Fill background */
for (int row = 0; row < fb->height; row++)
for (int col = 0; col < fb->width; col++)
dst[row * stride + col] = bg;
/* Top highlight */
for (int col = 0; col < fb->width; col++)
dst[col] = light;
/* Bottom shadow */
if (fb->height > 1)
for (int col = 0; col < fb->width; col++)
dst[(fb->height - 1) * stride + col] = dark;
wlr_scene_buffer_set_buffer(fb->scene_buf, &fb->base);
/* Resizebar is rendered into the parent frame buffer by wl_frame_paint.
* Don't commit a separate buffer here — it would overlay the texture. */
(void)fwin;
}
static void wl_frame_paint_titlebar(WFrameWindow *fwin, int state)