| /* |
| * Copyright (C) 2003, 2006 Apple Computer, Inc. All rights reserved. |
| * Copyright (C) 2005 Nokia. All rights reserved. |
| * 2008 Eric Seidel <eric@webkit.org> |
| * |
| * 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 SKY_ENGINE_PLATFORM_GEOMETRY_FLOATSIZE_H_ |
| #define SKY_ENGINE_PLATFORM_GEOMETRY_FLOATSIZE_H_ |
| |
| #include "sky/engine/platform/geometry/IntPoint.h" |
| #include "sky/engine/wtf/MathExtras.h" |
| |
| namespace blink { |
| |
| class IntSize; |
| class LayoutSize; |
| |
| class PLATFORM_EXPORT FloatSize { |
| public: |
| FloatSize() : m_width(0), m_height(0) { } |
| FloatSize(float width, float height) : m_width(width), m_height(height) { } |
| FloatSize(const IntSize& size) : m_width(size.width()), m_height(size.height()) { } |
| FloatSize(const LayoutSize&); |
| |
| static FloatSize narrowPrecision(double width, double height); |
| |
| float width() const { return m_width; } |
| float height() const { return m_height; } |
| |
| void setWidth(float width) { m_width = width; } |
| void setHeight(float height) { m_height = height; } |
| |
| bool isEmpty() const { return m_width <= 0 || m_height <= 0; } |
| bool isZero() const; |
| bool isExpressibleAsIntSize() const; |
| |
| float aspectRatio() const { return m_width / m_height; } |
| |
| void expand(float width, float height) |
| { |
| m_width += width; |
| m_height += height; |
| } |
| |
| void scale(float s) { scale(s, s); } |
| |
| void scale(float scaleX, float scaleY) |
| { |
| m_width *= scaleX; |
| m_height *= scaleY; |
| } |
| |
| FloatSize expandedTo(const FloatSize& other) const |
| { |
| return FloatSize(m_width > other.m_width ? m_width : other.m_width, |
| m_height > other.m_height ? m_height : other.m_height); |
| } |
| |
| FloatSize shrunkTo(const FloatSize& other) const |
| { |
| return FloatSize(m_width < other.m_width ? m_width : other.m_width, |
| m_height < other.m_height ? m_height : other.m_height); |
| } |
| |
| float diagonalLength() const; |
| float diagonalLengthSquared() const |
| { |
| return m_width * m_width + m_height * m_height; |
| } |
| |
| FloatSize transposedSize() const |
| { |
| return FloatSize(m_height, m_width); |
| } |
| |
| FloatSize scaledBy(float scale) const |
| { |
| return scaledBy(scale, scale); |
| } |
| |
| FloatSize scaledBy(float scaleX, float scaleY) const |
| { |
| return FloatSize(m_width * scaleX, m_height * scaleY); |
| } |
| |
| private: |
| float m_width, m_height; |
| }; |
| |
| inline FloatSize& operator+=(FloatSize& a, const FloatSize& b) |
| { |
| a.setWidth(a.width() + b.width()); |
| a.setHeight(a.height() + b.height()); |
| return a; |
| } |
| |
| inline FloatSize& operator-=(FloatSize& a, const FloatSize& b) |
| { |
| a.setWidth(a.width() - b.width()); |
| a.setHeight(a.height() - b.height()); |
| return a; |
| } |
| |
| inline FloatSize operator+(const FloatSize& a, const FloatSize& b) |
| { |
| return FloatSize(a.width() + b.width(), a.height() + b.height()); |
| } |
| |
| inline FloatSize operator-(const FloatSize& a, const FloatSize& b) |
| { |
| return FloatSize(a.width() - b.width(), a.height() - b.height()); |
| } |
| |
| inline FloatSize operator-(const FloatSize& size) |
| { |
| return FloatSize(-size.width(), -size.height()); |
| } |
| |
| inline FloatSize operator*(const FloatSize& a, const float b) |
| { |
| return FloatSize(a.width() * b, a.height() * b); |
| } |
| |
| inline FloatSize operator*(const float a, const FloatSize& b) |
| { |
| return FloatSize(a * b.width(), a * b.height()); |
| } |
| |
| inline bool operator==(const FloatSize& a, const FloatSize& b) |
| { |
| return a.width() == b.width() && a.height() == b.height(); |
| } |
| |
| inline bool operator!=(const FloatSize& a, const FloatSize& b) |
| { |
| return a.width() != b.width() || a.height() != b.height(); |
| } |
| |
| inline IntSize roundedIntSize(const FloatSize& p) |
| { |
| return IntSize(clampToInteger(roundf(p.width())), clampToInteger(roundf(p.height()))); |
| } |
| |
| inline IntSize flooredIntSize(const FloatSize& p) |
| { |
| return IntSize(clampToInteger(floorf(p.width())), clampToInteger(floorf(p.height()))); |
| } |
| |
| inline IntSize expandedIntSize(const FloatSize& p) |
| { |
| return IntSize(clampToInteger(ceilf(p.width())), clampToInteger(ceilf(p.height()))); |
| } |
| |
| inline IntPoint flooredIntPoint(const FloatSize& p) |
| { |
| return IntPoint(clampToInteger(floorf(p.width())), clampToInteger(floorf(p.height()))); |
| } |
| |
| } // namespace blink |
| |
| #endif // SKY_ENGINE_PLATFORM_GEOMETRY_FLOATSIZE_H_ |