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