isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2024-11-26 18:11:05 -05:00
Code Issues Packages Projects Releases Wiki Activity

compositor: Observe frame opaque region when updating shapes

Browse Source 
Apply either frame or client window opaque regions (or both as
an union). For client windows without an alpha channel, the frame
shape already contains the client area. If the client window does
have an alpha channel, the client rectangle is cleared to let the
client's opaque region take care of it.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/2555
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2758>
This commit is contained in:
Carlos Garnacho 2022-12-16 13:06:22 +01:00
parent 4752a8055c
commit 2b6651327e
1 changed files with 37 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/compositor/meta-window-actor-x11.c
View File

@ -990,16 +990,28 @@ update_opaque_region (MetaWindowActorX11 *actor_x11)
MetaWindow *window =
meta_window_actor_get_meta_window (META_WINDOW_ACTOR (actor_x11));
gboolean is_maybe_transparent;
cairo_region_t *opaque_region;
cairo_region_t *opaque_region = NULL;
MetaSurfaceActor *surface;
is_maybe_transparent = is_actor_maybe_transparent (actor_x11);
if (is_maybe_transparent && window->opaque_region)
if (is_maybe_transparent &&
(window->opaque_region ||
(window->frame && window->frame->opaque_region)))
{
cairo_rectangle_int_t client_area;
if (window->frame && window->frame->opaque_region)
opaque_region = cairo_region_copy (window->frame->opaque_region);
get_client_area_rect (actor_x11, &client_area);
if (opaque_region && meta_window_x11_has_alpha_channel (window))
cairo_region_subtract_rectangle (opaque_region, &client_area);
if (window->opaque_region)
{
cairo_region_t *client_opaque_region;
/* The opaque region is defined to be a part of the
* window which ARGB32 will always paint with opaque
* pixels. For these regions, we want to avoid painting
@ -1010,15 +1022,21 @@ update_opaque_region (MetaWindowActorX11 *actor_x11)
* to be undefined, and considered a client bug. In mutter's
* case, graphical glitches will occur.
*/
opaque_region = cairo_region_copy (window->opaque_region);
cairo_region_translate (opaque_region, client_area.x, client_area.y);
client_opaque_region = cairo_region_copy (window->opaque_region);
cairo_region_translate (client_opaque_region,
client_area.x, client_area.y);
if (opaque_region)
cairo_region_union (opaque_region, client_opaque_region);
else
opaque_region = cairo_region_reference (client_opaque_region);
cairo_region_destroy (client_opaque_region);
}
cairo_region_intersect (opaque_region, actor_x11->shape_region);
}
else if (is_maybe_transparent)
{
opaque_region = NULL;
}
else
else if (!is_maybe_transparent)
{
opaque_region = cairo_region_reference (actor_x11->shape_region);
}