1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_GFX_GEOMETRY_INSETS_F_H_ 6 #define UI_GFX_GEOMETRY_INSETS_F_H_ 7 8 #include <string> 9 10 #include "ui/gfx/gfx_export.h" 11 12 namespace gfx { 13 14 // A floating point version of gfx::Insets. 15 class GFX_EXPORT InsetsF { 16 public: 17 constexpr InsetsF() : top_(0.f), left_(0.f), bottom_(0.f), right_(0.f) {} 18 constexpr explicit InsetsF(float all) 19 : top_(all), left_(all), bottom_(all), right_(all) {} 20 constexpr InsetsF(float vertical, float horizontal) 21 : top_(vertical), 22 left_(horizontal), 23 bottom_(vertical), 24 right_(horizontal) {} 25 constexpr InsetsF(float top, float left, float bottom, float right) 26 : top_(top), left_(left), bottom_(bottom), right_(right) {} 27 28 constexpr float top() const { return top_; } 29 constexpr float left() const { return left_; } 30 constexpr float bottom() const { return bottom_; } 31 constexpr float right() const { return right_; } 32 33 // Returns the total width taken up by the insets, which is the sum of the 34 // left and right insets. 35 constexpr float width() const { return left_ + right_; } 36 37 // Returns the total height taken up by the insets, which is the sum of the 38 // top and bottom insets. 39 constexpr float height() const { return top_ + bottom_; } 40 41 // Returns true if the insets are empty. 42 bool IsEmpty() const { return width() == 0.f && height() == 0.f; } 43 44 void Set(float top, float left, float bottom, float right) { 45 top_ = top; 46 left_ = left; 47 bottom_ = bottom; 48 right_ = right; 49 } 50 51 bool operator==(const InsetsF& insets) const { 52 return top_ == insets.top_ && left_ == insets.left_ && 53 bottom_ == insets.bottom_ && right_ == insets.right_; 54 } 55 56 bool operator!=(const InsetsF& insets) const { 57 return !(*this == insets); 58 } 59 60 void operator+=(const InsetsF& insets) { 61 top_ += insets.top_; 62 left_ += insets.left_; 63 bottom_ += insets.bottom_; 64 right_ += insets.right_; 65 } 66 67 void operator-=(const InsetsF& insets) { 68 top_ -= insets.top_; 69 left_ -= insets.left_; 70 bottom_ -= insets.bottom_; 71 right_ -= insets.right_; 72 } 73 74 InsetsF operator-() const { 75 return InsetsF(-top_, -left_, -bottom_, -right_); 76 } 77 78 // Returns a string representation of the insets. 79 std::string ToString() const; 80 81 private: 82 float top_; 83 float left_; 84 float bottom_; 85 float right_; 86 }; 87 88 inline InsetsF operator+(InsetsF lhs, const InsetsF& rhs) { 89 lhs += rhs; 90 return lhs; 91 } 92 93 inline InsetsF operator-(InsetsF lhs, const InsetsF& rhs) { 94 lhs -= rhs; 95 return lhs; 96 } 97 98 } // namespace gfx 99 100 #endif // UI_GFX_GEOMETRY_INSETS_F_H_ 101
