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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_RECT_F_H_
#define UI_GFX_RECT_F_H_
#include <string>
#include "ui/gfx/point_f.h"
#include "ui/gfx/rect_base.h"
#include "ui/gfx/size_f.h"
#include "ui/gfx/vector2d_f.h"
namespace gfx {
class InsetsF;
// A floating version of gfx::Rect.
class UI_EXPORT RectF
: public RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float> {
public:
RectF()
: RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>
(SizeF()) {}
RectF(float width, float height)
: RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>
(SizeF(width, height)) {}
RectF(float x, float y, float width, float height)
: RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>
(PointF(x, y), SizeF(width, height)) {}
explicit RectF(const SizeF& size)
: RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>
(size) {}
RectF(const PointF& origin, const SizeF& size)
: RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>
(origin, size) {}
~RectF() {}
// Scales the rectangle by |scale|.
void Scale(float scale) {
Scale(scale, scale);
}
void Scale(float x_scale, float y_scale) {
set_origin(ScalePoint(origin(), x_scale, y_scale));
SizeF new_size = gfx::ScaleSize(size(), x_scale, y_scale);
new_size.ClampToNonNegative();
set_size(new_size);
}
// This method reports if the RectF can be safely converted to an integer
// Rect. When it is false, some dimension of the RectF is outside the bounds
// of what an integer can represent, and converting it to a Rect will require
// clamping.
bool IsExpressibleAsRect() const;
std::string ToString() const;
};
inline bool operator==(const RectF& lhs, const RectF& rhs) {
return lhs.origin() == rhs.origin() && lhs.size() == rhs.size();
}
inline bool operator!=(const RectF& lhs, const RectF& rhs) {
return !(lhs == rhs);
}
UI_EXPORT RectF operator+(const RectF& lhs, const Vector2dF& rhs);
UI_EXPORT RectF operator-(const RectF& lhs, const Vector2dF& rhs);
inline RectF operator+(const Vector2dF& lhs, const RectF& rhs) {
return rhs + lhs;
}
UI_EXPORT RectF IntersectRects(const RectF& a, const RectF& b);
UI_EXPORT RectF UnionRects(const RectF& a, const RectF& b);
UI_EXPORT RectF SubtractRects(const RectF& a, const RectF& b);
UI_EXPORT RectF ScaleRect(const RectF& r, float x_scale, float y_scale);
inline RectF ScaleRect(const RectF& r, float scale) {
return ScaleRect(r, scale, scale);
}
// Constructs a rectangle with |p1| and |p2| as opposite corners.
//
// This could also be thought of as "the smallest rect that contains both
// points", except that we consider points on the right/bottom edges of the
// rect to be outside the rect. So technically one or both points will not be
// contained within the rect, because they will appear on one of these edges.
UI_EXPORT RectF BoundingRect(const PointF& p1, const PointF& p2);
#if !defined(COMPILER_MSVC)
extern template class RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>;
#endif
} // namespace gfx
#endif // UI_GFX_RECT_F_H_
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