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// 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 "ui/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_);
}
// 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_
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