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window-actor/x11: Cache the client area

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With Xwayland, the shape region is recomputed and reapplied even when
the actor is frozen to prevent the black shadows effect.

However, while recomputing the shape region, the current client size is
taken into account, rather than the size when the client was frozen,
which is ahead of the actual client size using the NET_WM_SYNC protocol.

Keep the current client area and to reuse them when the X11 window actor
is frozen for rebuilding the client mask texture.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/1009
This commit is contained in:
Olivier Fourdan 2020-01-16 09:06:42 +01:00 committed by Robert Mader
parent 9d390ee49f
commit 7dbb4bc3f5
1 changed files with 15 additions and 16 deletions
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31
src/compositor/meta-window-actor-x11.c
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@ -99,6 +99,8 @@ struct _MetaWindowActorX11
gboolean recompute_focused_shadow;
gboolean recompute_unfocused_shadow;
gboolean is_frozen;
cairo_rectangle_int_t client_area;
};
static MetaCullableInterface *cullable_parent_iface;
@ -839,7 +841,6 @@ scan_visible_region (guchar *mask_data,
static void
build_and_scan_frame_mask (MetaWindowActorX11 *actor_x11,
cairo_rectangle_int_t *client_area,
cairo_region_t *shape_region)
{
ClutterBackend *backend = clutter_get_default_backend ();
@ -892,7 +893,8 @@ build_and_scan_frame_mask (MetaWindowActorX11 *actor_x11,
/* Make sure we don't paint the frame over the client window. */
frame_paint_region = cairo_region_create_rectangle (&rect);
cairo_region_subtract_rectangle (frame_paint_region, client_area);
cairo_region_subtract_rectangle (frame_paint_region,
&actor_x11->client_area);
gdk_cairo_region (cr, frame_paint_region);
cairo_clip (cr);
@ -950,14 +952,13 @@ update_shape_region (MetaWindowActorX11 *actor_x11)
MetaWindow *window =
meta_window_actor_get_meta_window (META_WINDOW_ACTOR (actor_x11));
cairo_region_t *region = NULL;
cairo_rectangle_int_t client_area;
meta_window_get_client_area_rect (window, &client_area);
if (window->frame && window->shape_region)
{
region = cairo_region_copy (window->shape_region);
cairo_region_translate (region, client_area.x, client_area.y);
cairo_region_translate (region,
actor_x11->client_area.x,
actor_x11->client_area.y);
}
else if (window->shape_region != NULL)
{
@ -968,11 +969,11 @@ update_shape_region (MetaWindowActorX11 *actor_x11)
/* If we don't have a shape on the server, that means that
* we have an implicit shape of one rectangle covering the
* entire window. */
region = cairo_region_create_rectangle (&client_area);
region = cairo_region_create_rectangle (&actor_x11->client_area);
}
if (window->shape_region || window->frame)
build_and_scan_frame_mask (actor_x11, &client_area, region);
build_and_scan_frame_mask (actor_x11, region);
g_clear_pointer (&actor_x11->shape_region, cairo_region_destroy);
actor_x11->shape_region = region;
@ -1046,10 +1047,6 @@ update_opaque_region (MetaWindowActorX11 *actor_x11)
is_maybe_transparent = is_actor_maybe_transparent (actor_x11);
if (is_maybe_transparent && window->opaque_region)
{
cairo_rectangle_int_t client_area;
meta_window_get_client_area_rect (window, &client_area);
/* 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
@ -1061,7 +1058,9 @@ update_opaque_region (MetaWindowActorX11 *actor_x11)
* case, graphical glitches will occur.
*/
opaque_region = cairo_region_copy (window->opaque_region);
cairo_region_translate (opaque_region, client_area.x, client_area.y);
cairo_region_translate (opaque_region,
actor_x11->client_area.x,
actor_x11->client_area.y);
cairo_region_intersect (opaque_region, actor_x11->shape_region);
}
else if (is_maybe_transparent)
@ -1110,16 +1109,15 @@ handle_updates (MetaWindowActorX11 *actor_x11)
{
MetaSurfaceActor *surface =
meta_window_actor_get_surface (META_WINDOW_ACTOR (actor_x11));
MetaWindow *window;
if (META_IS_SURFACE_ACTOR_X11 (surface) &&
meta_surface_actor_x11_is_unredirected (META_SURFACE_ACTOR_X11 (surface)))
return;
window = meta_window_actor_get_meta_window (META_WINDOW_ACTOR (actor_x11));
if (meta_window_actor_is_frozen (META_WINDOW_ACTOR (actor_x11)))
{
MetaWindow *window =
meta_window_actor_get_meta_window (META_WINDOW_ACTOR (actor_x11));
/* The window is frozen due to a pending animation: we'll wait until
* the animation finishes to repair the window.
*
@ -1138,6 +1136,7 @@ handle_updates (MetaWindowActorX11 *actor_x11)
if (!meta_surface_actor_is_visible (surface))
return;
meta_window_get_client_area_rect (window, &actor_x11->client_area);
check_needs_reshape (actor_x11);
check_needs_shadow (actor_x11);
}