| // 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_RECT_F_H_ |
| #define UI_GFX_GEOMETRY_RECT_F_H_ |
| |
| #include <iosfwd> |
| #include <string> |
| |
| #include "ui/gfx/geometry/point_f.h" |
| #include "ui/gfx/geometry/rect_base.h" |
| #include "ui/gfx/geometry/size_f.h" |
| #include "ui/gfx/geometry/vector2d_f.h" |
| |
| namespace gfx { |
| |
| class InsetsF; |
| |
| // A floating version of gfx::Rect. |
| class GFX_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)); |
| set_size(ScaleSize(size(), x_scale, y_scale)); |
| } |
| |
| // 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); |
| } |
| |
| inline RectF operator+(const RectF& lhs, const Vector2dF& rhs) { |
| return RectF(lhs.x() + rhs.x(), lhs.y() + rhs.y(), |
| lhs.width(), lhs.height()); |
| } |
| |
| inline RectF operator-(const RectF& lhs, const Vector2dF& rhs) { |
| return RectF(lhs.x() - rhs.x(), lhs.y() - rhs.y(), |
| lhs.width(), lhs.height()); |
| } |
| |
| inline RectF operator+(const Vector2dF& lhs, const RectF& rhs) { |
| return rhs + lhs; |
| } |
| |
| GFX_EXPORT RectF IntersectRects(const RectF& a, const RectF& b); |
| GFX_EXPORT RectF UnionRects(const RectF& a, const RectF& b); |
| GFX_EXPORT RectF SubtractRects(const RectF& a, const RectF& b); |
| |
| inline RectF ScaleRect(const RectF& r, float x_scale, float y_scale) { |
| return RectF(r.x() * x_scale, r.y() * y_scale, |
| r.width() * x_scale, r.height() * 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. |
| GFX_EXPORT RectF BoundingRect(const PointF& p1, const PointF& p2); |
| |
| #if !defined(COMPILER_MSVC) && !defined(__native_client__) |
| extern template class RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>; |
| #endif |
| |
| // This is declared here for use in gtest-based unit tests but is defined in |
| // the 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 RectF& rect, ::std::ostream* os); |
| |
| } // namespace gfx |
| |
| #endif // UI_GFX_GEOMETRY_RECT_F_H_ |