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Diffstat (limited to 'Source/WebCore/platform/graphics/FloatPoint.h')
-rw-r--r-- | Source/WebCore/platform/graphics/FloatPoint.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/FloatPoint.h b/Source/WebCore/platform/graphics/FloatPoint.h new file mode 100644 index 0000000..73a1bac --- /dev/null +++ b/Source/WebCore/platform/graphics/FloatPoint.h @@ -0,0 +1,207 @@ +/* + * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved. + * Copyright (C) 2005 Nokia. All rights reserved. + * + * 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 FloatPoint_h +#define FloatPoint_h + +#include "FloatSize.h" +#include "IntPoint.h" +#include <wtf/MathExtras.h> + +#if PLATFORM(CG) +typedef struct CGPoint CGPoint; +#endif + +#if PLATFORM(MAC) || (PLATFORM(CHROMIUM) && OS(DARWIN)) +#ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES +typedef struct CGPoint NSPoint; +#else +typedef struct _NSPoint NSPoint; +#endif +#endif + +#if PLATFORM(QT) +#include "qglobal.h" +QT_BEGIN_NAMESPACE +class QPointF; +QT_END_NAMESPACE +#endif + +#if PLATFORM(HAIKU) +class BPoint; +#endif + +#if PLATFORM(SKIA) +struct SkPoint; +#endif + +namespace WebCore { + +class AffineTransform; +class TransformationMatrix; +class IntPoint; + +class FloatPoint { +public: + FloatPoint() : m_x(0), m_y(0) { } + FloatPoint(float x, float y) : m_x(x), m_y(y) { } + FloatPoint(const IntPoint&); + + + static FloatPoint zero() { return FloatPoint(); } + + static FloatPoint narrowPrecision(double x, double y); + + float x() const { return m_x; } + float y() const { return m_y; } + + void setX(float x) { m_x = x; } + void setY(float y) { m_y = y; } + void set(float x, float y) + { + m_x = x; + m_y = y; + } + void move(float dx, float dy) + { + m_x += dx; + m_y += dy; + } + void scale(float sx, float sy) + { + m_x *= sx; + m_y *= sy; + } + + void normalize(); + + float dot(const FloatPoint& a) const + { + return m_x * a.x() + m_y * a.y(); + } + + float length() const; + float lengthSquared() const + { + return m_x * m_x + m_y * m_y; + } + +#if PLATFORM(CG) + FloatPoint(const CGPoint&); + operator CGPoint() const; +#endif + +#if (PLATFORM(MAC) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)) \ + || (PLATFORM(CHROMIUM) && OS(DARWIN)) + FloatPoint(const NSPoint&); + operator NSPoint() const; +#endif + +#if PLATFORM(QT) + FloatPoint(const QPointF&); + operator QPointF() const; +#endif + +#if PLATFORM(HAIKU) + FloatPoint(const BPoint&); + operator BPoint() const; +#endif + +#if PLATFORM(SKIA) + operator SkPoint() const; + FloatPoint(const SkPoint&); +#endif + + FloatPoint matrixTransform(const TransformationMatrix&) const; + FloatPoint matrixTransform(const AffineTransform&) const; + +private: + float m_x, m_y; +}; + + +inline FloatPoint& operator+=(FloatPoint& a, const FloatSize& b) +{ + a.move(b.width(), b.height()); + return a; +} + +inline FloatPoint& operator+=(FloatPoint& a, const FloatPoint& b) +{ + a.move(b.x(), b.y()); + return a; +} + +inline FloatPoint& operator-=(FloatPoint& a, const FloatSize& b) +{ + a.move(-b.width(), -b.height()); + return a; +} + +inline FloatPoint operator+(const FloatPoint& a, const FloatSize& b) +{ + return FloatPoint(a.x() + b.width(), a.y() + b.height()); +} + +inline FloatPoint operator+(const FloatPoint& a, const FloatPoint& b) +{ + return FloatPoint(a.x() + b.x(), a.y() + b.y()); +} + +inline FloatSize operator-(const FloatPoint& a, const FloatPoint& b) +{ + return FloatSize(a.x() - b.x(), a.y() - b.y()); +} + +inline FloatPoint operator-(const FloatPoint& a, const FloatSize& b) +{ + return FloatPoint(a.x() - b.width(), a.y() - b.height()); +} + +inline bool operator==(const FloatPoint& a, const FloatPoint& b) +{ + return a.x() == b.x() && a.y() == b.y(); +} + +inline bool operator!=(const FloatPoint& a, const FloatPoint& b) +{ + return a.x() != b.x() || a.y() != b.y(); +} + +inline float operator*(const FloatPoint& a, const FloatPoint& b) +{ + // dot product + return a.dot(b); +} + +inline IntPoint roundedIntPoint(const FloatPoint& p) +{ + return IntPoint(static_cast<int>(roundf(p.x())), static_cast<int>(roundf(p.y()))); +} + +} + +#endif |