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/*
* Copyright (C) 2003-2016 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 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 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.
*/
#pragma once
#include "FloatPoint.h"
#include "LengthBox.h"
#if USE(CG)
typedef struct CGRect CGRect;
#endif
#if PLATFORM(MAC)
#ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES
typedef struct CGRect NSRect;
#else
typedef struct _NSRect NSRect;
#endif
#endif // PLATFORM(MAC)
#if USE(CAIRO)
typedef struct _cairo_rectangle cairo_rectangle_t;
#endif
#if PLATFORM(WIN)
typedef struct tagRECT RECT;
struct D2D_RECT_F;
typedef D2D_RECT_F D2D1_RECT_F;
#endif
namespace WTF {
class TextStream;
}
namespace WebCore {
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 FloatPoint& topLeft, const FloatPoint& bottomRight)
: m_location(topLeft), m_size(FloatSize(bottomRight.x() - topLeft.x(), bottomRight.y() - topLeft.y())) { }
WEBCORE_EXPORT FloatRect(const IntRect&);
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(); }
float area() const { return m_size.area(); }
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 location() + size() / 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(const FloatBoxExtent& box)
{
m_location.move(-box.left(), -box.top());
m_size.expand(box.left() + box.right(), box.top() + box.bottom());
}
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
WEBCORE_EXPORT bool intersects(const FloatRect&) const;
WEBCORE_EXPORT bool contains(const FloatRect&) const;
WEBCORE_EXPORT bool contains(const FloatPoint&, ContainsMode = InsideOrOnStroke) const;
WEBCORE_EXPORT void intersect(const FloatRect&);
bool edgeInclusiveIntersect(const FloatRect&);
WEBCORE_EXPORT void unite(const FloatRect&);
void uniteEvenIfEmpty(const FloatRect&);
void uniteIfNonZero(const FloatRect&);
WEBCORE_EXPORT 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(); }
bool overlapsYRange(float y1, float y2) const { return !isEmpty() && y2 >= y1 && y2 >= y() && y1 <= maxY(); }
bool overlapsXRange(float x1, float x2) const { return !isEmpty() && x2 >= x1 && x2 >= x() && x1 <= maxX(); }
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 inflate(FloatSize size) { inflateX(size.width()); inflateY(size.height()); }
void scale(float s) { scale(s, s); }
WEBCORE_EXPORT void scale(float sx, float sy);
void scale(FloatSize size) { scale(size.width(), size.height()); }
FloatRect transposedRect() const { return FloatRect(m_location.transposedPoint(), m_size.transposedSize()); }
// Re-initializes this rectangle to fit the sets of passed points.
WEBCORE_EXPORT void fitToPoints(const FloatPoint& p0, const FloatPoint& p1);
WEBCORE_EXPORT void fitToPoints(const FloatPoint& p0, const FloatPoint& p1, const FloatPoint& p2);
WEBCORE_EXPORT void fitToPoints(const FloatPoint& p0, const FloatPoint& p1, const FloatPoint& p2, const FloatPoint& p3);
#if USE(CG)
WEBCORE_EXPORT FloatRect(const CGRect&);
WEBCORE_EXPORT operator CGRect() const;
#endif
#if PLATFORM(MAC) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
WEBCORE_EXPORT FloatRect(const NSRect&);
WEBCORE_EXPORT operator NSRect() const;
#endif
#if USE(CAIRO)
FloatRect(const cairo_rectangle_t&);
operator cairo_rectangle_t() const;
#endif
#if PLATFORM(WIN)
WEBCORE_EXPORT FloatRect(const RECT&);
WEBCORE_EXPORT FloatRect(const D2D1_RECT_F&);
WEBCORE_EXPORT operator D2D1_RECT_F() const;
#endif
static FloatRect infiniteRect();
bool isInfinite() 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;
}
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();
}
inline FloatRect FloatRect::infiniteRect()
{
static FloatRect infiniteRect(-std::numeric_limits<float>::max() / 2, -std::numeric_limits<float>::max() / 2, std::numeric_limits<float>::max(), std::numeric_limits<float>::max());
return infiniteRect;
}
inline bool FloatRect::isInfinite() const
{
return *this == infiniteRect();
}
WEBCORE_EXPORT FloatRect encloseRectToDevicePixels(const FloatRect&, float deviceScaleFactor);
WEBCORE_EXPORT IntRect enclosingIntRect(const FloatRect&);
WEBCORE_EXPORT IntRect roundedIntRect(const FloatRect&);
WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const FloatRect&);
}