| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_GFX_GEOMETRY_INSETS_F_H_ |
| #define UI_GFX_GEOMETRY_INSETS_F_H_ |
| |
| #include <string> |
| |
| #include "gfx/gfx_export.h" |
| |
| namespace gfx { |
| |
| // A floating point version of gfx::Insets. |
| class GFX_EXPORT InsetsF { |
| public: |
| constexpr InsetsF() : top_(0.f), left_(0.f), bottom_(0.f), right_(0.f) {} |
| constexpr explicit InsetsF(float all) |
| : top_(all), left_(all), bottom_(all), right_(all) {} |
| constexpr InsetsF(float vertical, float horizontal) |
| : top_(vertical), |
| left_(horizontal), |
| bottom_(vertical), |
| right_(horizontal) {} |
| constexpr InsetsF(float top, float left, float bottom, float right) |
| : top_(top), left_(left), bottom_(bottom), right_(right) {} |
| |
| constexpr float top() const { return top_; } |
| constexpr float left() const { return left_; } |
| constexpr float bottom() const { return bottom_; } |
| constexpr float right() const { return right_; } |
| |
| // Returns the total width taken up by the insets, which is the sum of the |
| // left and right insets. |
| constexpr float width() const { return left_ + right_; } |
| |
| // Returns the total height taken up by the insets, which is the sum of the |
| // top and bottom insets. |
| constexpr float height() const { return top_ + bottom_; } |
| |
| // Returns true if the insets are empty. |
| bool IsEmpty() const { return width() == 0.f && height() == 0.f; } |
| |
| void Set(float top, float left, float bottom, float right) { |
| top_ = top; |
| left_ = left; |
| bottom_ = bottom; |
| right_ = right; |
| } |
| |
| bool operator==(const InsetsF& insets) const { |
| return top_ == insets.top_ && left_ == insets.left_ && |
| bottom_ == insets.bottom_ && right_ == insets.right_; |
| } |
| |
| bool operator!=(const InsetsF& insets) const { return !(*this == insets); } |
| |
| void operator+=(const InsetsF& insets) { |
| top_ += insets.top_; |
| left_ += insets.left_; |
| bottom_ += insets.bottom_; |
| right_ += insets.right_; |
| } |
| |
| void operator-=(const InsetsF& insets) { |
| top_ -= insets.top_; |
| left_ -= insets.left_; |
| bottom_ -= insets.bottom_; |
| right_ -= insets.right_; |
| } |
| |
| InsetsF operator-() const { |
| return InsetsF(-top_, -left_, -bottom_, -right_); |
| } |
| |
| InsetsF Scale(float scale) const { |
| return InsetsF(scale * top(), scale * left(), scale * bottom(), |
| scale * right()); |
| } |
| |
| // Returns a string representation of the insets. |
| std::string ToString() const; |
| |
| private: |
| float top_; |
| float left_; |
| float bottom_; |
| float right_; |
| }; |
| |
| inline InsetsF operator+(InsetsF lhs, const InsetsF& rhs) { |
| lhs += rhs; |
| return lhs; |
| } |
| |
| inline InsetsF operator-(InsetsF lhs, const InsetsF& rhs) { |
| lhs -= rhs; |
| return lhs; |
| } |
| |
| } // namespace gfx |
| |
| #endif // UI_GFX_GEOMETRY_INSETS_F_H_ |