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// Copyright 2012 The Chromium Authors
// 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_H_
#define UI_GFX_GEOMETRY_INSETS_H_
#include "base/component_export.h"
#include "base/numerics/clamped_math.h"
#include "ui/gfx/geometry/insets_f.h"
#include "ui/gfx/geometry/insets_outsets_base.h"
namespace gfx {
class Outsets;
class Vector2d;
// This can be used to represent a space within a rectangle, by "shrinking" the
// rectangle by the inset amount on all four sides. Alternatively, it can
// represent a border that has a different thickness on each side.
class COMPONENT_EXPORT(GEOMETRY) Insets : public InsetsOutsetsBase<Insets> {
public:
using InsetsOutsetsBase::InsetsOutsetsBase;
// Conversion from Insets to Outsets negates all components.
Outsets ToOutsets() const;
// Adjusts the vertical and horizontal dimensions by the values described in
// |vector|. Offsetting insets before applying to a rectangle would be
// equivalent to offsetting the rectangle then applying the insets.
void Offset(const gfx::Vector2d& vector);
explicit operator InsetsF() const {
return InsetsF()
.set_top(static_cast<float>(top()))
.set_left(static_cast<float>(left()))
.set_bottom(static_cast<float>(bottom()))
.set_right(static_cast<float>(right()));
}
};
inline Insets operator+(Insets lhs, const Insets& rhs) {
lhs += rhs;
return lhs;
}
inline Insets operator-(Insets lhs, const Insets& rhs) {
lhs -= rhs;
return lhs;
}
inline Insets operator+(Insets insets, const gfx::Vector2d& offset) {
insets.Offset(offset);
return insets;
}
// Helper methods to scale a gfx::Insets to a new gfx::Insets.
COMPONENT_EXPORT(GEOMETRY)
Insets ScaleToCeiledInsets(const Insets& insets, float x_scale, float y_scale);
COMPONENT_EXPORT(GEOMETRY)
Insets ScaleToCeiledInsets(const Insets& insets, float scale);
COMPONENT_EXPORT(GEOMETRY)
Insets ScaleToFlooredInsets(const Insets& insets, float x_scale, float y_scale);
COMPONENT_EXPORT(GEOMETRY)
Insets ScaleToFlooredInsets(const Insets& insets, float scale);
COMPONENT_EXPORT(GEOMETRY)
Insets ScaleToRoundedInsets(const Insets& insets, float x_scale, float y_scale);
COMPONENT_EXPORT(GEOMETRY)
Insets ScaleToRoundedInsets(const Insets& insets, float scale);
// This is declared here for use in gtest-based unit tests but is defined in
// the //ui/gfx:test_support target. Depend on that to use this in your unit
// test. This should not be used in production code - call ToString() instead.
void PrintTo(const Insets&, ::std::ostream* os);
} // namespace gfx
#endif // UI_GFX_GEOMETRY_INSETS_H_
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