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/*
* Copyright (C) 2003, 2006, 2009 Apple Inc. All rights reserved.
* 2006 Rob Buis <buis@kde.org>
* Copyright (C) 2007-2008 Torch Mobile, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef Path_h
#define Path_h
#include <algorithm>
#if PLATFORM(CG)
typedef struct CGPath PlatformPath;
#elif PLATFORM(QT)
#include <qglobal.h>
QT_BEGIN_NAMESPACE
class QPainterPath;
QT_END_NAMESPACE
typedef QPainterPath PlatformPath;
#elif PLATFORM(SGL)
class SkPath;
typedef SkPath PlatformPath;
#elif PLATFORM(WX) && USE(WXGC)
class wxGraphicsPath;
typedef wxGraphicsPath PlatformPath;
#elif PLATFORM(CAIRO)
namespace WebCore {
struct CairoPath;
}
typedef WebCore::CairoPath PlatformPath;
#elif PLATFORM(SKIA)
class SkPath;
typedef SkPath PlatformPath;
#elif PLATFORM(HAIKU)
class BRegion;
typedef BRegion PlatformPath;
#elif PLATFORM(WINCE)
namespace WebCore {
class PlatformPath;
}
#else
typedef void PlatformPath;
#endif
namespace WebCore {
class FloatPoint;
class FloatRect;
class FloatSize;
class GraphicsContext;
class String;
class StrokeStyleApplier;
class TransformationMatrix;
enum WindRule {
RULE_NONZERO = 0,
RULE_EVENODD = 1
};
enum PathElementType {
PathElementMoveToPoint,
PathElementAddLineToPoint,
PathElementAddQuadCurveToPoint,
PathElementAddCurveToPoint,
PathElementCloseSubpath
};
struct PathElement {
PathElementType type;
FloatPoint* points;
};
typedef void (*PathApplierFunction)(void* info, const PathElement*);
class Path {
public:
Path();
~Path();
Path(const Path&);
Path& operator=(const Path&);
void swap(Path& other) { std::swap(m_path, other.m_path); }
bool contains(const FloatPoint&, WindRule rule = RULE_NONZERO) const;
bool strokeContains(StrokeStyleApplier*, const FloatPoint&) const;
FloatRect boundingRect() const;
FloatRect strokeBoundingRect(StrokeStyleApplier* = 0);
float length();
FloatPoint pointAtLength(float length, bool& ok);
float normalAngleAtLength(float length, bool& ok);
void clear();
bool isEmpty() const;
// Gets the current point of the current path, which is conceptually the final point reached by the path so far.
// Note the Path can be empty (isEmpty() == true) and still have a current point.
bool hasCurrentPoint() const;
void moveTo(const FloatPoint&);
void addLineTo(const FloatPoint&);
void addQuadCurveTo(const FloatPoint& controlPoint, const FloatPoint& endPoint);
void addBezierCurveTo(const FloatPoint& controlPoint1, const FloatPoint& controlPoint2, const FloatPoint& endPoint);
void addArcTo(const FloatPoint&, const FloatPoint&, float radius);
void closeSubpath();
void addArc(const FloatPoint&, float radius, float startAngle, float endAngle, bool anticlockwise);
void addRect(const FloatRect&);
void addEllipse(const FloatRect&);
void translate(const FloatSize&);
String debugString() const;
PlatformPath* platformPath() const { return m_path; }
static Path createRoundedRectangle(const FloatRect&, const FloatSize& roundingRadii);
static Path createRoundedRectangle(const FloatRect&, const FloatSize& topLeftRadius, const FloatSize& topRightRadius, const FloatSize& bottomLeftRadius, const FloatSize& bottomRightRadius);
static Path createRectangle(const FloatRect&);
static Path createEllipse(const FloatPoint& center, float rx, float ry);
static Path createCircle(const FloatPoint& center, float r);
static Path createLine(const FloatPoint&, const FloatPoint&);
void apply(void* info, PathApplierFunction) const;
void transform(const TransformationMatrix&);
private:
PlatformPath* m_path;
};
}
#endif
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