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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 "SVGPathData.h"
#include "Path.h"
#include "SVGCircleElement.h"
#include "SVGEllipseElement.h"
#include "SVGLineElement.h"
#include "SVGNames.h"
#include "SVGPathElement.h"
#include "SVGPathUtilities.h"
#include "SVGPolygonElement.h"
#include "SVGPolylineElement.h"
#include "SVGRectElement.h"
#include <wtf/HashMap.h>
namespace WebCore {
static void updatePathFromCircleElement(SVGElement* element, Path& path)
{
ASSERT(isSVGCircleElement(element));
SVGCircleElement* circle = toSVGCircleElement(element);
SVGLengthContext lengthContext(element);
float r = circle->r().value(lengthContext);
if (r > 0)
path.addEllipse(FloatRect(circle->cx().value(lengthContext) - r, circle->cy().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().value(lengthContext);
if (rx <= 0)
return;
float ry = ellipse->ry().value(lengthContext);
if (ry <= 0)
return;
path.addEllipse(FloatRect(ellipse->cx().value(lengthContext) - rx, ellipse->cy().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().value(lengthContext), line->y1().value(lengthContext)));
path.addLineTo(FloatPoint(line->x2().value(lengthContext), line->y2().value(lengthContext)));
}
static void updatePathFromPathElement(SVGElement* element, Path& path)
{
buildPathFromByteStream(toSVGPathElement(element)->pathByteStream(), path);
}
static void updatePathFromPolygonElement(SVGElement* element, Path& path)
{
SVGPointList& points = toSVGPolygonElement(element)->animatedPoints()->values();
if (points.isEmpty())
return;
path.moveTo(points.first());
unsigned size = points.size();
for (unsigned i = 1; i < size; ++i)
path.addLineTo(points.at(i));
path.closeSubpath();
}
static void updatePathFromPolylineElement(SVGElement* element, Path& path)
{
SVGPointList& points = toSVGPolylineElement(element)->animatedPoints()->values();
if (points.isEmpty())
return;
path.moveTo(points.first());
unsigned size = points.size();
for (unsigned i = 1; i < size; ++i)
path.addLineTo(points.at(i));
}
static void updatePathFromRectElement(SVGElement* element, Path& path)
{
SVGRectElement* rect = toSVGRectElement(element);
SVGLengthContext lengthContext(element);
float width = rect->width().value(lengthContext);
if (width <= 0)
return;
float height = rect->height().value(lengthContext);
if (height <= 0)
return;
float x = rect->x().value(lengthContext);
float y = rect->y().value(lengthContext);
float rx = rect->rx().value(lengthContext);
float ry = rect->ry().value(lengthContext);
bool hasRx = rx > 0;
bool hasRy = ry > 0;
if (hasRx || hasRy) {
if (!hasRx)
rx = ry;
else if (!hasRy)
ry = rx;
// FIXME: We currently enforce using beziers here, as at least on CoreGraphics/Lion, as
// the native method uses a different line dash origin, causing svg/custom/dashOrigin.svg to fail.
// See bug https://bugs.webkit.org/show_bug.cgi?id=79932 which tracks this issue.
path.addRoundedRect(FloatRect(x, y, width, height), FloatSize(rx, ry), Path::PreferBezierRoundedRect);
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<AtomicStringImpl*, PathUpdateFunction>* map = 0;
if (!map) {
map = new HashMap<AtomicStringImpl*, PathUpdateFunction>;
map->set(SVGNames::circleTag.localName().impl(), &updatePathFromCircleElement);
map->set(SVGNames::ellipseTag.localName().impl(), &updatePathFromEllipseElement);
map->set(SVGNames::lineTag.localName().impl(), &updatePathFromLineElement);
map->set(SVGNames::pathTag.localName().impl(), &updatePathFromPathElement);
map->set(SVGNames::polygonTag.localName().impl(), &updatePathFromPolygonElement);
map->set(SVGNames::polylineTag.localName().impl(), &updatePathFromPolylineElement);
map->set(SVGNames::rectTag.localName().impl(), &updatePathFromRectElement);
}
if (PathUpdateFunction pathUpdateFunction = map->get(element->localName().impl()))
(*pathUpdateFunction)(element, path);
}
} // namespace WebCore