root/Source/core/svg/SVGPathStringBuilder.cpp

DEFINITIONS

1. result
2. appendFloat
3. appendBool
4. appendPoint
5. emitCommand1Arg
6. emitCommand1Arg
7. emitCommand2Arg
8. moveTo
9. lineTo
10. lineToHorizontal
11. lineToVertical
12. curveToCubic
13. curveToCubicSmooth
14. curveToQuadratic
15. curveToQuadraticSmooth
16. arcTo
17. closePath

/*
 * 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 "config.h"
#include "core/svg/SVGPathStringBuilder.h"

#include "wtf/text/WTFString.h"

namespace WebCore {

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());
}

static void emitCommand1Arg(StringBuilder& stringBuilder, char commandChar, float argument)
{
    stringBuilder.append(commandChar);
    appendFloat(stringBuilder, argument);
    stringBuilder.append(' ');
}

static void emitCommand1Arg(StringBuilder& stringBuilder, char commandChar, const FloatPoint& argumentPoint)
{
    stringBuilder.append(commandChar);
    appendPoint(stringBuilder, argumentPoint);
    stringBuilder.append(' ');
}

static void emitCommand2Arg(StringBuilder& stringBuilder, char commandChar, const FloatPoint& argument1Point, const FloatPoint& argument2Point)
{
    stringBuilder.append(commandChar);
    appendPoint(stringBuilder, argument1Point);
    appendPoint(stringBuilder, argument2Point);
    stringBuilder.append(' ');
}

void SVGPathStringBuilder::moveTo(const FloatPoint& targetPoint, bool, PathCoordinateMode mode)
{
    emitCommand1Arg(m_stringBuilder, (mode == AbsoluteCoordinates) ? 'M' : 'm', targetPoint);
}

void SVGPathStringBuilder::lineTo(const FloatPoint& targetPoint, PathCoordinateMode mode)
{
    emitCommand1Arg(m_stringBuilder, (mode == AbsoluteCoordinates) ? 'L' : 'l', targetPoint);
}

void SVGPathStringBuilder::lineToHorizontal(float x, PathCoordinateMode mode)
{
    emitCommand1Arg(m_stringBuilder, (mode == AbsoluteCoordinates) ? 'H' : 'h', x);
}

void SVGPathStringBuilder::lineToVertical(float y, PathCoordinateMode mode)
{
    emitCommand1Arg(m_stringBuilder, (mode == AbsoluteCoordinates) ? 'V' : 'v', y);
}

void SVGPathStringBuilder::curveToCubic(const FloatPoint& point1, const FloatPoint& point2, const FloatPoint& targetPoint, PathCoordinateMode mode)
{
    m_stringBuilder.append((mode == AbsoluteCoordinates) ? 'C' : 'c');
    appendPoint(m_stringBuilder, point1);
    appendPoint(m_stringBuilder, point2);
    appendPoint(m_stringBuilder, targetPoint);
    m_stringBuilder.append(' ');
}

void SVGPathStringBuilder::curveToCubicSmooth(const FloatPoint& point2, const FloatPoint& targetPoint, PathCoordinateMode mode)
{
    emitCommand2Arg(m_stringBuilder, (mode == AbsoluteCoordinates) ? 'S' : 's', point2, targetPoint);
}

void SVGPathStringBuilder::curveToQuadratic(const FloatPoint& point1, const FloatPoint& targetPoint, PathCoordinateMode mode)
{
    emitCommand2Arg(m_stringBuilder, (mode == AbsoluteCoordinates) ? 'Q' : 'q', point1, targetPoint);
}

void SVGPathStringBuilder::curveToQuadraticSmooth(const FloatPoint& targetPoint, PathCoordinateMode mode)
{
    emitCommand1Arg(m_stringBuilder, (mode == AbsoluteCoordinates) ? 'T' : 't', targetPoint);
}

void SVGPathStringBuilder::arcTo(float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag, const FloatPoint& targetPoint, PathCoordinateMode mode)
{
    m_stringBuilder.append((mode == AbsoluteCoordinates) ? 'A' : 'a');
    appendFloat(m_stringBuilder, r1);
    appendFloat(m_stringBuilder, r2);
    appendFloat(m_stringBuilder, angle);
    appendBool(m_stringBuilder, largeArcFlag);
    appendBool(m_stringBuilder, sweepFlag);
    appendPoint(m_stringBuilder, targetPoint);
    m_stringBuilder.append(' ');
}

void SVGPathStringBuilder::closePath()
{
    m_stringBuilder.append("Z ");
}

} // namespace WebCore