added wxRect::Inflate()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6111 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/rect.tex

@@ -118,6 +118,18 @@ Gets the x member.
 
 Gets the y member.
 
+\membersection{wxRect::Inflate}\label{wxrectinflate}
+
+\func{void}{Inflate}{\param{wxCoord }{dx}, \param{wxCoord }{dy}}
+
+\func{void}{Inflate}{\param{wxCoord }{diff}}
+
+Increase the rectangle size by {\it dx} in x direction and {\it dy} in y
+direction. Both (or one of) parameters may be negative to decrease the
+rectngle size.
+
+The second form uses the same {\it diff} for both {\it dx} and {\it dy}.
+
 \membersection{wxRect::SetHeight}\label{wxrectsetheight}
 
 \func{void}{SetHeight}{\param{int}{ height}}

include/wx/gdicmn.h

@@ -285,8 +285,6 @@ public:
     wxPoint GetPosition() const { return wxPoint(x, y); }
     wxSize GetSize() const { return wxSize(width, height); }
 
-    // MFC-like functions
-
     int GetLeft()   const { return x; }
     int GetTop()    const { return y; }
     int GetBottom() const { return y + height - 1; }
@@ -297,12 +295,22 @@ public:
     void SetTop(int top) { y = top; }
     void SetBottom(int bottom) { height = bottom - y + 1; }
 
+    void Inflate(wxCoord dx, wxCoord dy)
+    {
+        x -= dx;
+        y -= dy;
+        width += 2*dx;
+        height += 2*dy;
+    }
+
+    void Inflate(wxCoord d) { Inflate(d, d); }
+
     bool operator==(const wxRect& rect) const;
     bool operator!=(const wxRect& rect) const { return !(*this == rect); }
 
     bool Inside(int cx, int cy) const;
     wxRect operator+(const wxRect& rect) const;
-    const wxRect& operator += (const wxRect& rect);
+    wxRect& operator+=(const wxRect& rect);
 
 public:
     int x, y, width, height;

src/common/gdicmn.cpp

@@ -93,7 +93,7 @@ bool wxRect::operator==(const wxRect& rect) const
           (height == rect.height));
 }
 
-const wxRect& wxRect::operator += (const wxRect& rect)
+wxRect& wxRect::operator += (const wxRect& rect)
 {
     *this = (*this + rect);
     return ( *this ) ;