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/*
* Copyright (C) Research In Motion Limited 2010, 2012. 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/svg/SVGPathUtilities.h"
#include "core/svg/SVGPathBlender.h"
#include "core/svg/SVGPathBuilder.h"
#include "core/svg/SVGPathByteStreamBuilder.h"
#include "core/svg/SVGPathByteStreamSource.h"
#include "core/svg/SVGPathElement.h"
#include "core/svg/SVGPathParser.h"
#include "core/svg/SVGPathSegListBuilder.h"
#include "core/svg/SVGPathSegListSource.h"
#include "core/svg/SVGPathStringBuilder.h"
#include "core/svg/SVGPathStringSource.h"
#include "core/svg/SVGPathTraversalStateBuilder.h"
#include "platform/graphics/PathTraversalState.h"
namespace blink {
bool buildPathFromString(const String& d, Path& result)
{
if (d.isEmpty())
return true;
SVGPathBuilder builder(result);
SVGPathStringSource source(d);
SVGPathParser parser(&source, &builder);
return parser.parsePathDataFromSource(NormalizedParsing);
}
bool buildPathFromByteStream(const SVGPathByteStream& stream, Path& result)
{
if (stream.isEmpty())
return true;
SVGPathBuilder builder(result);
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
return parser.parsePathDataFromSource(NormalizedParsing);
}
bool buildStringFromByteStream(const SVGPathByteStream& stream, String& result, PathParsingMode parsingMode)
{
if (stream.isEmpty())
return true;
SVGPathStringBuilder builder;
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
bool ok = parser.parsePathDataFromSource(parsingMode);
result = builder.result();
return ok;
}
bool buildSVGPathByteStreamFromString(const String& d, SVGPathByteStream& result, PathParsingMode parsingMode)
{
result.clear();
if (d.isEmpty())
return true;
// The string length is typically a minor overestimate of eventual byte stream size, so it avoids us a lot of reallocs.
result.reserveInitialCapacity(d.length());
SVGPathByteStreamBuilder builder(result);
SVGPathStringSource source(d);
SVGPathParser parser(&source, &builder);
bool ok = parser.parsePathDataFromSource(parsingMode);
result.shrinkToFit();
return ok;
}
bool addToSVGPathByteStream(SVGPathByteStream& fromStream, const SVGPathByteStream& byStream, unsigned repeatCount)
{
if (fromStream.isEmpty() || byStream.isEmpty())
return true;
OwnPtr<SVGPathByteStream> fromStreamCopy = fromStream.copy();
fromStream.clear();
SVGPathByteStreamBuilder builder(fromStream);
SVGPathByteStreamSource fromSource(*fromStreamCopy);
SVGPathByteStreamSource bySource(byStream);
SVGPathBlender blender(&fromSource, &bySource, &builder);
return blender.addAnimatedPath(repeatCount);
}
unsigned getSVGPathSegAtLengthFromSVGPathByteStream(const SVGPathByteStream& stream, float length)
{
if (stream.isEmpty())
return 0;
PathTraversalState traversalState(PathTraversalState::TraversalSegmentAtLength);
SVGPathTraversalStateBuilder builder(traversalState, length);
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
parser.parsePathDataFromSource(NormalizedParsing);
return builder.pathSegmentIndex();
}
float getTotalLengthOfSVGPathByteStream(const SVGPathByteStream& stream)
{
if (stream.isEmpty())
return 0;
PathTraversalState traversalState(PathTraversalState::TraversalTotalLength);
SVGPathTraversalStateBuilder builder(traversalState);
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
parser.parsePathDataFromSource(NormalizedParsing);
return builder.totalLength();
}
FloatPoint getPointAtLengthOfSVGPathByteStream(const SVGPathByteStream& stream, float length)
{
if (stream.isEmpty())
return FloatPoint();
PathTraversalState traversalState(PathTraversalState::TraversalPointAtLength);
SVGPathTraversalStateBuilder builder(traversalState, length);
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
parser.parsePathDataFromSource(NormalizedParsing);
return builder.currentPoint();
}
}
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