Move geometry classes from core/platform/graphics to platform/geometry

Source/core/platform/graphics/FloatRect.h

-/*
- * Copyright (C) 2003, 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 FloatRect_h
-#define FloatRect_h
-
-#include "core/platform/graphics/FloatPoint.h"
-#include "wtf/Vector.h"
-
-#if OS(MACOSX)
-typedef struct CGRect CGRect;
-#ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES
-typedef struct CGRect NSRect;
-#else
-typedef struct _NSRect NSRect;
-#endif
-#endif
-
-struct SkRect;
-
-namespace WebCore {
-
-class LayoutRect;
-class IntRect;
-class IntPoint;
-
-class FloatRect {
-public:
-    enum ContainsMode {
-        InsideOrOnStroke,
-        InsideButNotOnStroke
-    };
-
-    FloatRect() { }
-    FloatRect(const FloatPoint& location, const FloatSize& size)
-        : m_location(location), m_size(size) { }
-    FloatRect(float x, float y, float width, float height)
-        : m_location(FloatPoint(x, y)), m_size(FloatSize(width, height)) { }
-    FloatRect(const IntRect&);
-    FloatRect(const LayoutRect&);
-    FloatRect(const SkRect&);
-
-    static FloatRect narrowPrecision(double x, double y, double width, double height);
-
-    FloatPoint location() const { return m_location; }
-    FloatSize size() const { return m_size; }
-
-    void setLocation(const FloatPoint& location) { m_location = location; }
-    void setSize(const FloatSize& size) { m_size = size; }
-
-    float x() const { return m_location.x(); }
-    float y() const { return m_location.y(); }
-    float maxX() const { return x() + width(); }
-    float maxY() const { return y() + height(); }
-    float width() const { return m_size.width(); }
-    float height() const { return m_size.height(); }
-
-    void setX(float x) { m_location.setX(x); }
-    void setY(float y) { m_location.setY(y); }
-    void setWidth(float width) { m_size.setWidth(width); }
-    void setHeight(float height) { m_size.setHeight(height); }
-
-    bool isEmpty() const { return m_size.isEmpty(); }
-    bool isZero() const { return m_size.isZero(); }
-    bool isExpressibleAsIntRect() const;
-
-    FloatPoint center() const { return FloatPoint(x() + width() / 2, y() + height() / 2); }
-
-    void move(const FloatSize& delta) { m_location += delta; }
-    void moveBy(const FloatPoint& delta) { m_location.move(delta.x(), delta.y()); }
-    void move(float dx, float dy) { m_location.move(dx, dy); }
-
-    void expand(const FloatSize& size) { m_size += size; }
-    void expand(float dw, float dh) { m_size.expand(dw, dh); }
-    void contract(const FloatSize& size) { m_size -= size; }
-    void contract(float dw, float dh) { m_size.expand(-dw, -dh); }
-
-    void shiftXEdgeTo(float edge)
-    {
-        float delta = edge - x();
-        setX(edge);
-        setWidth(std::max(0.0f, width() - delta));
-    }
-    void shiftMaxXEdgeTo(float edge)
-    {
-        float delta = edge - maxX();
-        setWidth(std::max(0.0f, width() + delta));
-    }
-    void shiftYEdgeTo(float edge)
-    {
-        float delta = edge - y();
-        setY(edge);
-        setHeight(std::max(0.0f, height() - delta));
-    }
-    void shiftMaxYEdgeTo(float edge)
-    {
-        float delta = edge - maxY();
-        setHeight(std::max(0.0f, height() + delta));
-    }
-
-    FloatPoint minXMinYCorner() const { return m_location; } // typically topLeft
-    FloatPoint maxXMinYCorner() const { return FloatPoint(m_location.x() + m_size.width(), m_location.y()); } // typically topRight
-    FloatPoint minXMaxYCorner() const { return FloatPoint(m_location.x(), m_location.y() + m_size.height()); } // typically bottomLeft
-    FloatPoint maxXMaxYCorner() const { return FloatPoint(m_location.x() + m_size.width(), m_location.y() + m_size.height()); } // typically bottomRight
-
-    bool intersects(const FloatRect&) const;
-    bool contains(const FloatRect&) const;
-    bool contains(const FloatPoint&, ContainsMode = InsideOrOnStroke) const;
-
-    void intersect(const FloatRect&);
-    void unite(const FloatRect&);
-    void uniteEvenIfEmpty(const FloatRect&);
-    void uniteIfNonZero(const FloatRect&);
-    void extend(const FloatPoint&);
-
-    // Note, this doesn't match what IntRect::contains(IntPoint&) does; the int version
-    // is really checking for containment of 1x1 rect, but that doesn't make sense with floats.
-    bool contains(float px, float py) const
-        { return px >= x() && px <= maxX() && py >= y() && py <= maxY(); }
-
-    void inflateX(float dx) {
-        m_location.setX(m_location.x() - dx);
-        m_size.setWidth(m_size.width() + dx + dx);
-    }
-    void inflateY(float dy) {
-        m_location.setY(m_location.y() - dy);
-        m_size.setHeight(m_size.height() + dy + dy);
-    }
-    void inflate(float d) { inflateX(d); inflateY(d); }
-    void scale(float s) { scale(s, s); }
-    void scale(float sx, float sy);
-
-    FloatRect transposedRect() const { return FloatRect(m_location.transposedPoint(), m_size.transposedSize()); }
-
-    // Re-initializes this rectangle to fit the sets of passed points.
-    void fitToPoints(const FloatPoint& p0, const FloatPoint& p1);
-    void fitToPoints(const FloatPoint& p0, const FloatPoint& p1, const FloatPoint& p2);
-    void fitToPoints(const FloatPoint& p0, const FloatPoint& p1, const FloatPoint& p2, const FloatPoint& p3);
-
-#if OS(MACOSX)
-    FloatRect(const CGRect&);
-    operator CGRect() const;
-#if !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
-    FloatRect(const NSRect&);
-    operator NSRect() const;
-#endif
-#endif
-
-    operator SkRect() const;
-
-private:
-    FloatPoint m_location;
-    FloatSize m_size;
-
-    void setLocationAndSizeFromEdges(float left, float top, float right, float bottom)
-    {
-        m_location.set(left, top);
-        m_size.setWidth(right - left);
-        m_size.setHeight(bottom - top);
-    }
-};
-
-inline FloatRect intersection(const FloatRect& a, const FloatRect& b)
-{
-    FloatRect c = a;
-    c.intersect(b);
-    return c;
-}
-
-inline FloatRect unionRect(const FloatRect& a, const FloatRect& b)
-{
-    FloatRect c = a;
-    c.unite(b);
-    return c;
-}
-
-FloatRect unionRect(const Vector<FloatRect>&);
-
-inline FloatRect& operator+=(FloatRect& a, const FloatRect& b)
-{
-    a.move(b.x(), b.y());
-    a.setWidth(a.width() + b.width());
-    a.setHeight(a.height() + b.height());
-    return a;
-}
-
-inline FloatRect operator+(const FloatRect& a, const FloatRect& b)
-{
-    FloatRect c = a;
-    c += b;
-    return c;
-}
-
-inline bool operator==(const FloatRect& a, const FloatRect& b)
-{
-    return a.location() == b.location() && a.size() == b.size();
-}
-
-inline bool operator!=(const FloatRect& a, const FloatRect& b)
-{
-    return a.location() != b.location() || a.size() != b.size();
-}
-
-IntRect enclosingIntRect(const FloatRect&);
-
-// Returns a valid IntRect contained within the given FloatRect.
-IntRect enclosedIntRect(const FloatRect&);
-
-IntRect roundedIntRect(const FloatRect&);
-
-// Map rect r from srcRect to an equivalent rect in destRect.
-FloatRect mapRect(const FloatRect& r, const FloatRect& srcRect, const FloatRect& destRect);
-
-}
-
-#endif