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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef UI_GFX_POINT_H_
      6 #define UI_GFX_POINT_H_
      7 
      8 #include "ui/base/ui_export.h"
      9 #include "ui/gfx/point_base.h"
     10 #include "ui/gfx/point_f.h"
     11 #include "ui/gfx/vector2d.h"
     12 
     13 #if defined(OS_WIN)
     14 typedef unsigned long DWORD;
     15 typedef struct tagPOINT POINT;
     16 #elif defined(OS_IOS)
     17 #include <CoreGraphics/CoreGraphics.h>
     18 #elif defined(OS_MACOSX)
     19 #include <ApplicationServices/ApplicationServices.h>
     20 #endif
     21 
     22 namespace gfx {
     23 
     24 // A point has an x and y coordinate.
     25 class UI_EXPORT Point : public PointBase<Point, int, Vector2d> {
     26  public:
     27   Point() : PointBase<Point, int, Vector2d>(0, 0) {}
     28   Point(int x, int y) : PointBase<Point, int, Vector2d>(x, y) {}
     29 #if defined(OS_WIN)
     30   // |point| is a DWORD value that contains a coordinate.  The x-coordinate is
     31   // the low-order short and the y-coordinate is the high-order short.  This
     32   // value is commonly acquired from GetMessagePos/GetCursorPos.
     33   explicit Point(DWORD point);
     34   explicit Point(const POINT& point);
     35   Point& operator=(const POINT& point);
     36 #elif defined(OS_MACOSX)
     37   explicit Point(const CGPoint& point);
     38 #endif
     39 
     40   ~Point() {}
     41 
     42 #if defined(OS_WIN)
     43   POINT ToPOINT() const;
     44 #elif defined(OS_MACOSX)
     45   CGPoint ToCGPoint() const;
     46 #endif
     47 
     48   operator PointF() const {
     49     return PointF(x(), y());
     50   }
     51 
     52   // Returns a string representation of point.
     53   std::string ToString() const;
     54 };
     55 
     56 inline bool operator==(const Point& lhs, const Point& rhs) {
     57   return lhs.x() == rhs.x() && lhs.y() == rhs.y();
     58 }
     59 
     60 inline bool operator!=(const Point& lhs, const Point& rhs) {
     61   return !(lhs == rhs);
     62 }
     63 
     64 inline Point operator+(const Point& lhs, const Vector2d& rhs) {
     65   Point result(lhs);
     66   result += rhs;
     67   return result;
     68 }
     69 
     70 inline Point operator-(const Point& lhs, const Vector2d& rhs) {
     71   Point result(lhs);
     72   result -= rhs;
     73   return result;
     74 }
     75 
     76 inline Vector2d operator-(const Point& lhs, const Point& rhs) {
     77   return Vector2d(lhs.x() - rhs.x(), lhs.y() - rhs.y());
     78 }
     79 
     80 inline Point PointAtOffsetFromOrigin(const Vector2d& offset_from_origin) {
     81   return Point(offset_from_origin.x(), offset_from_origin.y());
     82 }
     83 
     84 #if !defined(COMPILER_MSVC)
     85 extern template class PointBase<Point, int, Vector2d>;
     86 #endif
     87 
     88 }  // namespace gfx
     89 
     90 #endif  // UI_GFX_POINT_H_
     91