Increase interoperability between wxPoint and wxRealPoint introducing constructors which convert between the two classes.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64539 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gdicmn.h

@@ -395,6 +395,16 @@ public:
 
     wxRealPoint() : x(0.0), y(0.0) { }
     wxRealPoint(double xx, double yy) : x(xx), y(yy) { }
+    wxRealPoint(const wxPoint& pt);
+    
+    // no copy ctor or assignment operator - the defaults are ok
+
+    //assignment operators
+    wxRealPoint& operator+=(const wxRealPoint& p) { x += p.x; y += p.y; return *this; }
+    wxRealPoint& operator-=(const wxRealPoint& p) { x -= p.x; y -= p.y; return *this; }
+
+    wxRealPoint& operator+=(const wxSize& s) { x += s.GetWidth(); y += s.GetHeight(); return *this; }
+    wxRealPoint& operator-=(const wxSize& s) { x -= s.GetWidth(); y -= s.GetHeight(); return *this; }
 };
 
 
@@ -502,6 +512,7 @@ public:
 
     wxPoint() : x(0), y(0) { }
     wxPoint(int xx, int yy) : x(xx), y(yy) { }
+    wxPoint(const wxRealPoint& pt) : x(pt.x), y(pt.y) { }
 
     // no copy ctor or assignment operator - the defaults are ok
 

interface/wx/gdicmn.h

@@ -136,7 +136,49 @@ public:
         Initializes the point with the given coordinates.
     */
     wxRealPoint(double x, double y);
+    
+    /**
+        Converts the given wxPoint (with integer coordinates) to a wxRealPoint.
+    */
+    wxRealPoint(const wxPoint& pt);
 
+    /**
+        @name Miscellaneous operators
+        
+        Note that these operators are documented as class members
+        (to make them easier to find) but, as their prototype shows,
+        they are implemented as global operators; note that this is
+        transparent to the user but it helps to understand why the
+        following functions are documented to take the wxPoint they
+        operate on as an explicit argument.
+    */
+    //@{
+    wxRealPoint& operator=(const wxRealPoint& pt);
+
+    bool operator ==(const wxRealPoint& p1, const wxRealPoint& p2);
+    bool operator !=(const wxRealPoint& p1, const wxRealPoint& p2);
+
+    wxRealPoint operator +(const wxRealPoint& p1, const wxRealPoint& p2);
+    wxRealPoint operator -(const wxRealPoint& p1, const wxRealPoint& p2);
+
+    wxRealPoint& operator +=(const wxRealPoint& pt);
+    wxRealPoint& operator -=(const wxRealPoint& pt);
+
+    wxRealPoint operator +(const wxRealPoint& pt, const wxSize& sz);
+    wxRealPoint operator -(const wxRealPoint& pt, const wxSize& sz);
+    wxRealPoint operator +(const wxSize& sz, const wxRealPoint& pt);
+    wxRealPoint operator -(const wxSize& sz, const wxRealPoint& pt);
+
+    wxRealPoint& operator +=(const wxSize& sz);
+    wxRealPoint& operator -=(const wxSize& sz);
+    
+    wxSize operator /(const wxRealPoint& sz, int factor);
+    wxSize operator *(const wxRealPoint& sz, int factor);
+    wxSize operator *(int factor, const wxSize& sz);
+    wxSize& operator /=(int factor);
+    wxSize& operator *=(int factor);
+    //@}
+    
     /**
         X coordinate of this point.
     */
@@ -497,6 +539,12 @@ public:
         Initializes the point object with the given @a x and @a y coordinates.
     */
     wxPoint(int x, int y);
+    
+    /**
+        Converts the given wxRealPoint (with floating point coordinates) to a
+        wxPoint instance.
+    */
+    wxPoint(const wxRealPoint& pt);
 
     /**
         @name Miscellaneous operators

src/common/gdicmn.cpp

@@ -252,6 +252,11 @@ wxRect operator*(const wxRect& r1, const wxRect& r2)
     return wxRect(x1, y1, x2-x1, y2-y1);
 }
 
+wxRealPoint::wxRealPoint(const wxPoint& pt)
+ : x(pt.x), y(pt.y) 
+{
+}
+
 // ============================================================================
 // wxColourDatabase
 // ============================================================================