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MetaFrame: Cache borders

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Cache the computed border size so we can fetch the border size at
any time without worrying that we'll be spending too much time in
the theme code (in some cases we might allocate a PangoFontDescription
or do other significant work.)

The main effort here is clearing the cache when various bits of window
state change that could potentially affect the computed borders.

https://bugzilla.gnome.org/show_bug.cgi?id=707194
This commit is contained in:
Owen W. Taylor
2013-11-15 17:37:50 -05:00
parent 4ee9f3563b
commit b4036e061a
6 changed files with 43 additions and 3 deletions
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5
src/core/frame.h
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@ -41,6 +41,8 @@ struct _MetaFrame
*/
MetaRectangle rect;
MetaFrameBorders cached_borders; /* valid if borders_cached is set */
/* position of client, size of frame */
int child_x;
int child_y;
@ -50,6 +52,7 @@ struct _MetaFrame
guint mapped : 1;
guint need_reapply_frame_shape : 1;
guint is_flashing : 1; /* used by the visual bell flash */
guint borders_cached : 1;
};
void meta_window_ensure_frame (MetaWindow *window);
@ -68,6 +71,8 @@ gboolean meta_frame_sync_to_window (MetaFrame *frame,
gboolean need_move,
gboolean need_resize);
void meta_frame_clear_cached_borders (MetaFrame *frame);
cairo_region_t *meta_frame_get_frame_bounds (MetaFrame *frame);
void meta_frame_get_mask (MetaFrame *frame,