| // 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. |
| |
| // Defines a simple integer rectangle class. The containment semantics |
| // are array-like; that is, the coordinate (x, y) is considered to be |
| // contained by the rectangle, but the coordinate (x + width, y) is not. |
| // The class will happily let you create malformed rectangles (that is, |
| // rectangles with negative width and/or height), but there will be assertions |
| // in the operations (such as Contains()) to complain in this case. |
| |
| #ifndef UI_GFX_GEOMETRY_RECT_H_ |
| #define UI_GFX_GEOMETRY_RECT_H_ |
| |
| #include <cmath> |
| #include <iosfwd> |
| #include <string> |
| |
| #include "ui/gfx/geometry/point.h" |
| #include "ui/gfx/geometry/rect_base.h" |
| #include "ui/gfx/geometry/rect_f.h" |
| #include "ui/gfx/geometry/size.h" |
| #include "ui/gfx/geometry/vector2d.h" |
| |
| #if defined(OS_WIN) |
| typedef struct tagRECT RECT; |
| #elif defined(OS_IOS) |
| #include <CoreGraphics/CoreGraphics.h> |
| #elif defined(OS_MACOSX) |
| #include <ApplicationServices/ApplicationServices.h> |
| #endif |
| |
| namespace gfx { |
| |
| class Insets; |
| |
| class GFX_EXPORT Rect |
| : public RectBase<Rect, Point, Size, Insets, Vector2d, int> { |
| public: |
| Rect() : RectBase<Rect, Point, Size, Insets, Vector2d, int>(Point()) {} |
| |
| Rect(int width, int height) |
| : RectBase<Rect, Point, Size, Insets, Vector2d, int> |
| (Size(width, height)) {} |
| |
| Rect(int x, int y, int width, int height) |
| : RectBase<Rect, Point, Size, Insets, Vector2d, int> |
| (Point(x, y), Size(width, height)) {} |
| |
| #if defined(OS_WIN) |
| explicit Rect(const RECT& r); |
| #elif defined(OS_MACOSX) |
| explicit Rect(const CGRect& r); |
| #endif |
| |
| explicit Rect(const gfx::Size& size) |
| : RectBase<Rect, Point, Size, Insets, Vector2d, int>(size) {} |
| |
| Rect(const gfx::Point& origin, const gfx::Size& size) |
| : RectBase<Rect, Point, Size, Insets, Vector2d, int>(origin, size) {} |
| |
| ~Rect() {} |
| |
| #if defined(OS_WIN) |
| // Construct an equivalent Win32 RECT object. |
| RECT ToRECT() const; |
| #elif defined(OS_MACOSX) |
| // Construct an equivalent CoreGraphics object. |
| CGRect ToCGRect() const; |
| #endif |
| |
| operator RectF() const { |
| return RectF(origin().x(), origin().y(), size().width(), size().height()); |
| } |
| |
| std::string ToString() const; |
| }; |
| |
| inline bool operator==(const Rect& lhs, const Rect& rhs) { |
| return lhs.origin() == rhs.origin() && lhs.size() == rhs.size(); |
| } |
| |
| inline bool operator!=(const Rect& lhs, const Rect& rhs) { |
| return !(lhs == rhs); |
| } |
| |
| GFX_EXPORT Rect operator+(const Rect& lhs, const Vector2d& rhs); |
| GFX_EXPORT Rect operator-(const Rect& lhs, const Vector2d& rhs); |
| |
| inline Rect operator+(const Vector2d& lhs, const Rect& rhs) { |
| return rhs + lhs; |
| } |
| |
| GFX_EXPORT Rect IntersectRects(const Rect& a, const Rect& b); |
| GFX_EXPORT Rect UnionRects(const Rect& a, const Rect& b); |
| GFX_EXPORT Rect SubtractRects(const Rect& a, const Rect& b); |
| |
| // 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 Rect BoundingRect(const Point& p1, const Point& p2); |
| |
| inline Rect ScaleToEnclosingRect(const Rect& rect, |
| float x_scale, |
| float y_scale) { |
| int x = std::floor(rect.x() * x_scale); |
| int y = std::floor(rect.y() * y_scale); |
| int r = rect.width() == 0 ? x : std::ceil(rect.right() * x_scale); |
| int b = rect.height() == 0 ? y : std::ceil(rect.bottom() * y_scale); |
| return Rect(x, y, r - x, b - y); |
| } |
| |
| inline Rect ScaleToEnclosingRect(const Rect& rect, float scale) { |
| return ScaleToEnclosingRect(rect, scale, scale); |
| } |
| |
| inline Rect ScaleToEnclosedRect(const Rect& rect, |
| float x_scale, |
| float y_scale) { |
| int x = std::ceil(rect.x() * x_scale); |
| int y = std::ceil(rect.y() * y_scale); |
| int r = rect.width() == 0 ? x : std::floor(rect.right() * x_scale); |
| int b = rect.height() == 0 ? y : std::floor(rect.bottom() * y_scale); |
| return Rect(x, y, r - x, b - y); |
| } |
| |
| inline Rect ScaleToEnclosedRect(const Rect& rect, float scale) { |
| return ScaleToEnclosedRect(rect, scale, scale); |
| } |
| |
| #if !defined(COMPILER_MSVC) && !defined(__native_client__) |
| extern template class RectBase<Rect, Point, Size, Insets, Vector2d, int>; |
| #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 Rect& rect, ::std::ostream* os); |
| |
| } // namespace gfx |
| |
| #endif // UI_GFX_GEOMETRY_RECT_H_ |