third_party/WebKit/Source/core/svg/SVGPathBuilder.h

/*
 * Copyright (C) 2002, 2003 The Karbon Developers
 * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
 * Copyright (C) 2006, 2007 Rob Buis <buis@kde.org>
 * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
 * Copyright (C) Research In Motion Limited 2010. 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.
 */

#ifndef SVGPathBuilder_h
#define SVGPathBuilder_h

#include "core/svg/SVGPathConsumer.h"
#include "core/svg/SVGPathData.h"
#include "platform/geometry/FloatPoint.h"

namespace blink {

class FloatSize;
class Path;

class SVGPathBuilder final : public SVGPathConsumer {
public:
    SVGPathBuilder(Path& path)
        : m_path(path)
        , m_lastCommand(PathSegUnknown)
    { }

    void emitSegment(const PathSegmentData&) override;

private:
    void emitClose();
    void emitMoveTo(const FloatPoint&);
    void emitLineTo(const FloatPoint&);
    void emitQuadTo(const FloatPoint&, const FloatPoint&);
    void emitSmoothQuadTo(const FloatPoint&);
    void emitCubicTo(const FloatPoint&, const FloatPoint&, const FloatPoint&);
    void emitSmoothCubicTo(const FloatPoint&, const FloatPoint&);
    void emitArcTo(const FloatPoint&, const FloatSize&, float, bool largeArc, bool sweep);

    FloatPoint smoothControl(bool isSmooth) const;

    Path& m_path;

    SVGPathSegType m_lastCommand;
    FloatPoint m_subpathPoint;
    FloatPoint m_currentPoint;
    FloatPoint m_lastControlPoint;
};

} // namespace blink

#endif // SVGPathBuilder_h