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106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
/*
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* Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
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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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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “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 THE COPYRIGHT HOLDER BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* 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
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef SKY_ENGINE_PLATFORM_GEOMETRY_FLOATBOXEXTENT_H_
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#define SKY_ENGINE_PLATFORM_GEOMETRY_FLOATBOXEXTENT_H_
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#include "flutter/sky/engine/platform/geometry/FloatRect.h"
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namespace blink {
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class FloatBoxExtent {
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public:
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FloatBoxExtent() : m_top(0), m_right(0), m_bottom(0), m_left(0) {}
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FloatBoxExtent(float top, float right, float bottom, float left)
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: m_top(top), m_right(right), m_bottom(bottom), m_left(left) {}
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float top() const { return m_top; }
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void setTop(float top) { m_top = top; }
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float right() const { return m_right; }
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void setRight(float right) { m_right = right; }
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float bottom() const { return m_bottom; }
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void setBottom(float bottom) { m_bottom = bottom; }
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float left() const { return m_left; }
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void setLeft(float left) { m_left = left; }
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bool isZero() const { return !left() && !right() && !top() && !bottom(); }
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void expandRect(FloatRect& rect) const {
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if (isZero())
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return;
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rect.move(-left(), -top());
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rect.expand(left() + right(), top() + bottom());
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}
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void unite(const FloatBoxExtent& other) {
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m_top = std::min(m_top, other.top());
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m_right = std::max(m_right, other.right());
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m_bottom = std::max(m_bottom, other.bottom());
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m_left = std::min(m_left, other.left());
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}
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void unite(const FloatRect& rect) {
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m_top = std::min(m_top, rect.y());
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m_right = std::max(m_right, rect.maxX());
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m_bottom = std::max(m_bottom, rect.maxY());
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m_left = std::min(m_left, rect.x());
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}
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private:
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float m_top;
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float m_right;
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float m_bottom;
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float m_left;
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};
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inline bool operator==(const FloatBoxExtent& a, const FloatBoxExtent& b) {
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return a.top() == b.top() && a.right() == b.right() &&
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a.bottom() == b.bottom() && a.left() == b.left();
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}
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inline bool operator!=(const FloatBoxExtent& a, const FloatBoxExtent& b) {
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return !(a == b);
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}
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inline void operator+=(FloatBoxExtent& a, const FloatBoxExtent& b) {
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a.setTop(a.top() + b.top());
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a.setRight(a.right() + b.right());
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a.setBottom(a.bottom() + b.bottom());
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a.setLeft(a.left() + b.left());
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}
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} // namespace blink
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#endif // SKY_ENGINE_PLATFORM_GEOMETRY_FLOATBOXEXTENT_H_
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