forked from AuroraMiddleware/gtk
c4ecc3f4f7
... and its implementation in the X11 backend.
GDK does lots of work trying to reduce the region in expose events
so that when the server sends multiple expose events, touching the
same area we can make sure to only redraw stuff once. However:
(1) this is only relevant of there's tons of delay and multiple
expose events get sent
(2) we coalesce multiple events into a single expose event anyway
(3) we do this on the frame clock
But most importantly:
(4) Since the invention of compositing, servers caches all contents
anyway
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gdksurface-x11.h"
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void
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_gdk_x11_surface_process_expose (GdkSurface *surface,
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gulong serial,
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GdkRectangle *area)
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{
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cairo_region_t *invalidate_region = cairo_region_create_rectangle (area);
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if (!cairo_region_is_empty (invalidate_region))
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_gdk_surface_invalidate_for_expose (surface, invalidate_region);
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cairo_region_destroy (invalidate_region);
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}
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