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/*
* Copyright (C) 2007 Alp Toker <alp@atoker.com>
* Copyright (C) 2008 Dirk Schulze <vbs85@gmx.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#if ENABLE(SVG)
#include "SVGResourceClipper.h"
#include "AffineTransform.h"
#include "CairoPath.h"
#include "GraphicsContext.h"
#include <cairo.h>
namespace WebCore {
void SVGResourceClipper::applyClip(GraphicsContext* context, const FloatRect& boundingBox) const
{
cairo_t* cr = context->platformContext();
if (m_clipData.clipData().size() < 1)
return;
cairo_reset_clip(cr);
context->beginPath();
for (unsigned int x = 0; x < m_clipData.clipData().size(); x++) {
ClipData data = m_clipData.clipData()[x];
Path path = data.path;
if (path.isEmpty())
continue;
path.closeSubpath();
if (data.bboxUnits) {
// Make use of the clipping units
AffineTransform transform;
transform.translate(boundingBox.x(), boundingBox.y());
transform.scale(boundingBox.width(), boundingBox.height());
path.transform(transform);
}
cairo_path_t* clipPath = cairo_copy_path(path.platformPath()->m_cr);
cairo_append_path(cr, clipPath);
cairo_set_fill_rule(cr, data.windRule == RULE_EVENODD ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
}
cairo_clip(cr);
}
} // namespace WebCore
#endif
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