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frames: Simplify the clip region calculation

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Since GTK+ already clips to the extended region for us, there's no need
to combine the two. This does lose the fast-path, but I don't actually
expect this to fire, as when we're composited, we really won't ever get
partial exposes.
This commit is contained in:
Jasper St. Pierre 2014-06-21 13:40:00 -04:00
parent 4f9b994e73
commit ff8d5281f0
1 changed files with 4 additions and 16 deletions
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20
src/ui/frames.c
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@ -1580,9 +1580,8 @@ meta_frames_destroy_event (GtkWidget *widget,
}
static void
clip_region_to_visible_frame_border (cairo_region_t *region,
MetaUIFrame *frame)
static cairo_region_t *
get_visible_frame_border_region (MetaUIFrame *frame)
{
MetaRectangle frame_rect;
cairo_rectangle_int_t area;
@ -1620,9 +1619,7 @@ clip_region_to_visible_frame_border (cairo_region_t *region,
/* Visible frame border */
cairo_region_subtract_rectangle (frame_border, &area);
cairo_region_intersect (region, frame_border);
cairo_region_destroy (frame_border);
return frame_border;
}
#define TAU (2*M_PI)
@ -1744,28 +1741,19 @@ meta_frames_draw (GtkWidget *widget,
{
MetaUIFrame *frame;
MetaFrames *frames;
cairo_rectangle_int_t clip;
cairo_region_t *region;
frames = META_FRAMES (widget);
gdk_cairo_get_clip_rectangle (cr, &clip);
frame = find_frame_to_draw (frames, cr);
if (frame == NULL)
return FALSE;
region = cairo_region_create_rectangle (&clip);
clip_region_to_visible_frame_border (region, frame);
if (cairo_region_is_empty (region))
goto out;
region = get_visible_frame_border_region (frame);
gdk_cairo_region (cr, region);
cairo_clip (cr);
meta_frames_paint (frames, frame, cr);
out:
cairo_region_destroy (region);
return TRUE;