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/*
* Copyright (C) Research In Motion Limited 2011. All rights reserved.
*
* 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"
#include "core/rendering/svg/SVGPathData.h"
#include "core/SVGNames.h"
#include "core/svg/SVGCircleElement.h"
#include "core/svg/SVGEllipseElement.h"
#include "core/svg/SVGLineElement.h"
#include "core/svg/SVGPathElement.h"
#include "core/svg/SVGPathUtilities.h"
#include "core/svg/SVGPolygonElement.h"
#include "core/svg/SVGPolylineElement.h"
#include "core/svg/SVGRectElement.h"
#include "platform/graphics/Path.h"
#include "wtf/HashMap.h"
namespace blink {
using namespace SVGNames;
static void updatePathFromCircleElement(SVGElement* element, Path& path)
{
SVGCircleElement* circle = toSVGCircleElement(element);
SVGLengthContext lengthContext(element);
float r = circle->r()->currentValue()->value(lengthContext);
if (r > 0)
path.addEllipse(FloatRect(circle->cx()->currentValue()->value(lengthContext) - r, circle->cy()->currentValue()->value(lengthContext) - r, r * 2, r * 2));
}
static void updatePathFromEllipseElement(SVGElement* element, Path& path)
{
SVGEllipseElement* ellipse = toSVGEllipseElement(element);
SVGLengthContext lengthContext(element);
float rx = ellipse->rx()->currentValue()->value(lengthContext);
if (rx < 0)
return;
float ry = ellipse->ry()->currentValue()->value(lengthContext);
if (ry < 0)
return;
if (!rx && !ry)
return;
path.addEllipse(FloatRect(ellipse->cx()->currentValue()->value(lengthContext) - rx, ellipse->cy()->currentValue()->value(lengthContext) - ry, rx * 2, ry * 2));
}
static void updatePathFromLineElement(SVGElement* element, Path& path)
{
SVGLineElement* line = toSVGLineElement(element);
SVGLengthContext lengthContext(element);
path.moveTo(FloatPoint(line->x1()->currentValue()->value(lengthContext), line->y1()->currentValue()->value(lengthContext)));
path.addLineTo(FloatPoint(line->x2()->currentValue()->value(lengthContext), line->y2()->currentValue()->value(lengthContext)));
}
static void updatePathFromPathElement(SVGElement* element, Path& path)
{
buildPathFromByteStream(*toSVGPathElement(element)->pathByteStream(), path);
}
static void updatePathFromPolylineElement(SVGElement* element, Path& path)
{
RefPtrWillBeRawPtr<SVGPointList> points = toSVGPolyElement(element)->points()->currentValue();
if (points->isEmpty())
return;
SVGPointList::ConstIterator it = points->begin();
SVGPointList::ConstIterator itEnd = points->end();
ASSERT(it != itEnd);
path.moveTo(it->value());
++it;
for (; it != itEnd; ++it)
path.addLineTo(it->value());
}
static void updatePathFromPolygonElement(SVGElement* element, Path& path)
{
updatePathFromPolylineElement(element, path);
path.closeSubpath();
}
static void updatePathFromRectElement(SVGElement* element, Path& path)
{
SVGRectElement* rect = toSVGRectElement(element);
SVGLengthContext lengthContext(element);
float width = rect->width()->currentValue()->value(lengthContext);
if (width < 0)
return;
float height = rect->height()->currentValue()->value(lengthContext);
if (height < 0)
return;
if (!width && !height)
return;
float x = rect->x()->currentValue()->value(lengthContext);
float y = rect->y()->currentValue()->value(lengthContext);
float rx = rect->rx()->currentValue()->value(lengthContext);
float ry = rect->ry()->currentValue()->value(lengthContext);
bool hasRx = rx > 0;
bool hasRy = ry > 0;
if (hasRx || hasRy) {
if (!hasRx)
rx = ry;
else if (!hasRy)
ry = rx;
path.addRoundedRect(FloatRect(x, y, width, height), FloatSize(rx, ry));
return;
}
path.addRect(FloatRect(x, y, width, height));
}
void updatePathFromGraphicsElement(SVGElement* element, Path& path)
{
ASSERT(element);
ASSERT(path.isEmpty());
typedef void (*PathUpdateFunction)(SVGElement*, Path&);
static HashMap<StringImpl*, PathUpdateFunction>* map = 0;
if (!map) {
map = new HashMap<StringImpl*, PathUpdateFunction>;
map->set(circleTag.localName().impl(), updatePathFromCircleElement);
map->set(ellipseTag.localName().impl(), updatePathFromEllipseElement);
map->set(lineTag.localName().impl(), updatePathFromLineElement);
map->set(pathTag.localName().impl(), updatePathFromPathElement);
map->set(polygonTag.localName().impl(), updatePathFromPolygonElement);
map->set(polylineTag.localName().impl(), updatePathFromPolylineElement);
map->set(rectTag.localName().impl(), updatePathFromRectElement);
}
if (PathUpdateFunction pathUpdateFunction = map->get(element->localName().impl()))
(*pathUpdateFunction)(element, path);
}
} // namespace blink
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