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df9ea31df5
Most of the time pixman_region_init is called without any extents, and followed by a pixman_region_union_rect, used to used to initialize rectangular regions. pixman_region_union_rect is not that cheap, but the sequence is called quite often. So it should be worth introducing a specialized and fast function for this sequence. This introduces pixman_region_init_rect. This new function makes _cairo_region_init_from_rectangle obsolete. Also removes the extent argument from pixman_region_init as it was called with NULL most of the time. A pixman_region_init_with_extents is added for the general case.
55 lines
2 KiB
C
55 lines
2 KiB
C
/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2005 Red Hat, Inc.
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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 either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is Red Hat, Inc.
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*
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* Contributor(s):
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* Owen Taylor <otaylor@redhat.com>
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*/
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#include "cairoint.h"
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/**
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* _cairo_region_extents_rectangle:
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* @region: a #pixman_region16_t
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* @rect: rectangle into which to store the extents
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*
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* Gets the bounding box of a region as a cairo_rectangle_int16_t
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**/
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void
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_cairo_region_extents_rectangle (pixman_region16_t *region,
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cairo_rectangle_int16_t *rect)
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{
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pixman_box16_t *region_extents = pixman_region_extents (region);
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rect->x = region_extents->x1;
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rect->y = region_extents->y1;
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rect->width = region_extents->x2 - region_extents->x1;
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rect->height = region_extents->y2 - region_extents->y1;
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}
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