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30 #ifndef FloatBoxExtent_h
31 #define FloatBoxExtent_h
33 #include "platform/geometry/FloatRect.h"
37 class FloatBoxExtent {
47 FloatBoxExtent(float top, float right, float bottom, float left)
55 float top() const { return m_top; }
56 void setTop(float top) { m_top = top; }
58 float right() const { return m_right; }
59 void setRight(float right) { m_right = right; }
61 float bottom() const { return m_bottom; }
62 void setBottom(float bottom) { m_bottom = bottom; }
64 float left() const { return m_left; }
65 void setLeft(float left) { m_left = left; }
67 bool isZero() const { return !left() && !right() && !top() && !bottom(); }
69 void expandRect(FloatRect& rect) const
74 rect.move(-left(), -top());
75 rect.expand(left() + right(), top() + bottom());
78 void unite(const FloatBoxExtent& other)
80 m_top = std::min(m_top, other.top());
81 m_right = std::max(m_right, other.right());
82 m_bottom = std::max(m_bottom, other.bottom());
83 m_left = std::min(m_left, other.left());
86 void unite(const FloatRect& rect)
88 m_top = std::min(m_top, rect.y());
89 m_right = std::max(m_right, rect.maxX());
90 m_bottom = std::max(m_bottom, rect.maxY());
91 m_left = std::min(m_left, rect.x());
101 inline bool operator==(const FloatBoxExtent& a, const FloatBoxExtent& b)
103 return a.top() == b.top()
104 && a.right() == b.right()
105 && a.bottom() == b.bottom()
106 && a.left() == b.left();
109 inline bool operator!=(const FloatBoxExtent& a, const FloatBoxExtent& b)
114 inline void operator+=(FloatBoxExtent& a, const FloatBoxExtent& b)
116 a.setTop(a.top() + b.top());
117 a.setRight(a.right() + b.right());
118 a.setBottom(a.bottom() + b.bottom());
119 a.setLeft(a.left() + b.left());
122 } // namespace WebCore
125 #endif // FloatBoxExtent_h