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/*
* Copyright (C) Research In Motion Limited 2010-2011. 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 "core/svg/SVGPathStringBuilder.h"
#include "core/svg/SVGPathData.h"
#include "wtf/text/WTFString.h"
namespace blink {
String SVGPathStringBuilder::result() {
unsigned size = m_stringBuilder.length();
if (!size)
return String();
// Remove trailing space.
m_stringBuilder.resize(size - 1);
return m_stringBuilder.toString();
}
static void appendFloat(StringBuilder& stringBuilder, float value) {
stringBuilder.append(' ');
stringBuilder.appendNumber(value);
}
static void appendBool(StringBuilder& stringBuilder, bool value) {
stringBuilder.append(' ');
stringBuilder.appendNumber(value);
}
static void appendPoint(StringBuilder& stringBuilder, const FloatPoint& point) {
appendFloat(stringBuilder, point.x());
appendFloat(stringBuilder, point.y());
}
// TODO(fs): Centralized location for this (SVGPathSeg.h?)
static const char pathSegmentCharacter[] = {
0, // PathSegUnknown
'Z', // PathSegClosePath
'M', // PathSegMoveToAbs
'm', // PathSegMoveToRel
'L', // PathSegLineToAbs
'l', // PathSegLineToRel
'C', // PathSegCurveToCubicAbs
'c', // PathSegCurveToCubicRel
'Q', // PathSegCurveToQuadraticAbs
'q', // PathSegCurveToQuadraticRel
'A', // PathSegArcAbs
'a', // PathSegArcRel
'H', // PathSegLineToHorizontalAbs
'h', // PathSegLineToHorizontalRel
'V', // PathSegLineToVerticalAbs
'v', // PathSegLineToVerticalRel
'S', // PathSegCurveToCubicSmoothAbs
's', // PathSegCurveToCubicSmoothRel
'T', // PathSegCurveToQuadraticSmoothAbs
't', // PathSegCurveToQuadraticSmoothRel
};
void SVGPathStringBuilder::emitSegment(const PathSegmentData& segment) {
ASSERT(segment.command > PathSegUnknown &&
segment.command <= PathSegCurveToQuadraticSmoothRel);
m_stringBuilder.append(pathSegmentCharacter[segment.command]);
switch (segment.command) {
case PathSegMoveToRel:
case PathSegMoveToAbs:
case PathSegLineToRel:
case PathSegLineToAbs:
case PathSegCurveToQuadraticSmoothRel:
case PathSegCurveToQuadraticSmoothAbs:
appendPoint(m_stringBuilder, segment.targetPoint);
break;
case PathSegLineToHorizontalRel:
case PathSegLineToHorizontalAbs:
appendFloat(m_stringBuilder, segment.targetPoint.x());
break;
case PathSegLineToVerticalRel:
case PathSegLineToVerticalAbs:
appendFloat(m_stringBuilder, segment.targetPoint.y());
break;
case PathSegClosePath:
break;
case PathSegCurveToCubicRel:
case PathSegCurveToCubicAbs:
appendPoint(m_stringBuilder, segment.point1);
appendPoint(m_stringBuilder, segment.point2);
appendPoint(m_stringBuilder, segment.targetPoint);
break;
case PathSegCurveToCubicSmoothRel:
case PathSegCurveToCubicSmoothAbs:
appendPoint(m_stringBuilder, segment.point2);
appendPoint(m_stringBuilder, segment.targetPoint);
break;
case PathSegCurveToQuadraticRel:
case PathSegCurveToQuadraticAbs:
appendPoint(m_stringBuilder, segment.point1);
appendPoint(m_stringBuilder, segment.targetPoint);
break;
case PathSegArcRel:
case PathSegArcAbs:
appendPoint(m_stringBuilder, segment.point1);
appendFloat(m_stringBuilder, segment.point2.x());
appendBool(m_stringBuilder, segment.arcLarge);
appendBool(m_stringBuilder, segment.arcSweep);
appendPoint(m_stringBuilder, segment.targetPoint);
break;
default:
ASSERT_NOT_REACHED();
}
m_stringBuilder.append(' ');
}
} // namespace blink
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