293 lines
7.7 KiB
C++
293 lines
7.7 KiB
C++
/*
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* Copyright (C) 2003-2016 Apple Inc. All rights reserved.
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* Copyright (C) 2005 Nokia. All rights reserved.
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* 2008 Eric Seidel <eric@webkit.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "IntPoint.h"
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#include <wtf/JSONValues.h>
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#include <wtf/MathExtras.h>
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#include <wtf/text/WTFString.h>
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#if PLATFORM(IOS_FAMILY)
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#include <CoreGraphics/CoreGraphics.h>
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#endif
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#if PLATFORM(HAIKU)
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class BSize;
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#endif
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#if USE(CG)
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typedef struct CGSize CGSize;
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#endif
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#if PLATFORM(MAC)
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#ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES
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typedef struct CGSize NSSize;
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#else
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typedef struct _NSSize NSSize;
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#endif
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#endif // PLATFORM(MAC)
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#if PLATFORM(WIN)
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struct D2D_SIZE_F;
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typedef D2D_SIZE_F D2D1_SIZE_F;
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#endif
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namespace WTF {
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class TextStream;
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}
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namespace WebCore {
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class IntSize;
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class FloatSize {
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public:
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FloatSize() { }
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FloatSize(float width, float height) : m_width(width), m_height(height) { }
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WEBCORE_EXPORT FloatSize(const IntSize&);
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static FloatSize narrowPrecision(double width, double height);
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float width() const { return m_width; }
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float height() const { return m_height; }
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bool hasIntrinsicWidth = false;
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bool hasIntrinsicHeight = false;
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void setWidth(float width) { m_width = width; }
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void setHeight(float height) { m_height = height; }
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bool isEmpty() const { return m_width <= 0 || m_height <= 0; }
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WEBCORE_EXPORT bool isZero() const;
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bool isExpressibleAsIntSize() const;
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float aspectRatio() const { return m_width / m_height; }
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void expand(float width, float height)
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{
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m_width += width;
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m_height += height;
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}
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void scale(float s)
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{
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m_width *= s;
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m_height *= s;
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}
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void scale(float scaleX, float scaleY)
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{
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m_width *= scaleX;
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m_height *= scaleY;
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}
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FloatSize scaled(float s) const
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{
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return { m_width * s, m_height * s };
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}
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FloatSize scaled(float scaleX, float scaleY) const
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{
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return { m_width * scaleX, m_height * scaleY };
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}
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WEBCORE_EXPORT FloatSize constrainedBetween(const FloatSize& min, const FloatSize& max) const;
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FloatSize expandedTo(const FloatSize& other) const
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{
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return FloatSize(m_width > other.m_width ? m_width : other.m_width,
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m_height > other.m_height ? m_height : other.m_height);
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}
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FloatSize shrunkTo(const FloatSize& other) const
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{
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return FloatSize(m_width < other.m_width ? m_width : other.m_width,
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m_height < other.m_height ? m_height : other.m_height);
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}
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float diagonalLength() const
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{
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return std::hypot(m_width, m_height);
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}
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float diagonalLengthSquared() const
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{
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return m_width * m_width + m_height * m_height;
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}
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float area() const
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{
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return m_width * m_height;
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}
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FloatSize transposedSize() const
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{
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return FloatSize(m_height, m_width);
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}
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#if PLATFORM(HAIKU)
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FloatSize(const BSize&);
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operator BSize() const;
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#endif
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#if USE(CG)
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WEBCORE_EXPORT explicit FloatSize(const CGSize&); // don't do this implicitly since it's lossy
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WEBCORE_EXPORT operator CGSize() const;
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#endif
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#if PLATFORM(MAC) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
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WEBCORE_EXPORT explicit FloatSize(const NSSize&); // don't do this implicitly since it's lossy
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operator NSSize() const;
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#endif
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#if PLATFORM(WIN)
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WEBCORE_EXPORT FloatSize(const D2D1_SIZE_F&);
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operator D2D1_SIZE_F() const;
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#endif
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String toJSONString() const;
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WEBCORE_EXPORT Ref<JSON::Object> toJSONObject() const;
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private:
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float m_width { 0 };
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float m_height { 0 };
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};
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inline FloatSize& operator+=(FloatSize& a, const FloatSize& b)
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{
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a.setWidth(a.width() + b.width());
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a.setHeight(a.height() + b.height());
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return a;
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}
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inline FloatSize& operator-=(FloatSize& a, const FloatSize& b)
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{
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a.setWidth(a.width() - b.width());
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a.setHeight(a.height() - b.height());
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return a;
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}
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inline FloatSize operator+(const FloatSize& a, const FloatSize& b)
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{
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return FloatSize(a.width() + b.width(), a.height() + b.height());
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}
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inline FloatSize operator-(const FloatSize& a, const FloatSize& b)
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{
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return FloatSize(a.width() - b.width(), a.height() - b.height());
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}
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inline FloatSize operator-(const FloatSize& size)
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{
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return FloatSize(-size.width(), -size.height());
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}
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inline FloatSize operator*(const FloatSize& a, float b)
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{
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return FloatSize(a.width() * b, a.height() * b);
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}
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inline FloatSize operator*(float a, const FloatSize& b)
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{
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return FloatSize(a * b.width(), a * b.height());
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}
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inline FloatSize operator*(const FloatSize& a, const FloatSize& b)
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{
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return FloatSize(a.width() * b.width(), a.height() * b.height());
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}
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inline FloatSize operator/(const FloatSize& a, const FloatSize& b)
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{
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return FloatSize(a.width() / b.width(), a.height() / b.height());
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}
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inline FloatSize operator/(const FloatSize& a, float b)
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{
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return FloatSize(a.width() / b, a.height() / b);
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}
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inline FloatSize operator/(float a, const FloatSize& b)
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{
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return FloatSize(a / b.width(), a / b.height());
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}
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inline bool operator==(const FloatSize& a, const FloatSize& b)
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{
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return a.width() == b.width() && a.height() == b.height();
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}
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inline bool areEssentiallyEqual(const FloatSize& a, const FloatSize& b)
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{
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return WTF::areEssentiallyEqual(a.width(), b.width()) && WTF::areEssentiallyEqual(a.height(), b.height());
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}
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inline bool operator!=(const FloatSize& a, const FloatSize& b)
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{
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return a.width() != b.width() || a.height() != b.height();
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}
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inline IntSize roundedIntSize(const FloatSize& p)
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{
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return IntSize(clampToInteger(roundf(p.width())), clampToInteger(roundf(p.height())));
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}
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inline IntSize flooredIntSize(const FloatSize& p)
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{
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return IntSize(clampToInteger(floorf(p.width())), clampToInteger(floorf(p.height())));
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}
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inline IntSize expandedIntSize(const FloatSize& p)
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{
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return IntSize(clampToInteger(ceilf(p.width())), clampToInteger(ceilf(p.height())));
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}
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inline IntPoint flooredIntPoint(const FloatSize& p)
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{
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return IntPoint(clampToInteger(floorf(p.width())), clampToInteger(floorf(p.height())));
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}
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WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const FloatSize&);
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} // namespace WebCore
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namespace WTF {
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template<> struct DefaultHash<WebCore::FloatSize>;
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template<> struct HashTraits<WebCore::FloatSize>;
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template<typename Type> struct LogArgument;
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template <>
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struct LogArgument<WebCore::FloatSize> {
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static String toString(const WebCore::FloatSize& size)
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{
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return size.toJSONString();
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}
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};
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} // namespace WTF
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