check for self-assignment in operator=

[wxWidgets.git] / include / wx / image.h

diff --git a/include/wx/image.h b/include/wx/image.h
index ffb1e3777b9025115efecc1a81c1bab59144a9e3..e0a6760eb3f8b29c088a9de121d232596ed9c6ff 100644 (file)
--- a/include/wx/image.h
+++ b/include/wx/image.h
@@ -240,6 +240,9 @@ public:
     bool Create( char** xpmData ) { return Create(const_cast<const char* const*>(xpmData)); }
 #endif
     void Destroy();
+   
+    // initialize the image data with zeroes
+    void Clear(unsigned char value = 0);
 
     // creates an identical copy of the image (the = operator
     // just raises the ref count)
@@ -283,7 +286,7 @@ public:
     // Rotates the image about the given point, 'angle' radians.
     // Returns the rotated image, leaving this image intact.
     wxImage Rotate(double angle, const wxPoint & centre_of_rotation,
-                   bool interpolating = true, wxPoint * offset_after_rotation = (wxPoint*) NULL) const;
+                   bool interpolating = true, wxPoint * offset_after_rotation = NULL) const;
 
     wxImage Rotate90( bool clockwise = true ) const;
     wxImage Mirror( bool horizontally = true ) const;
@@ -319,9 +322,13 @@ public:
     bool SetMaskFromImage(const wxImage & mask,
                           unsigned char mr, unsigned char mg, unsigned char mb);
 
-    // converts image's alpha channel to mask, if it has any, does nothing
-    // otherwise:
+    // converts image's alpha channel to mask (choosing mask colour
+    // automatically or using the specified colour for the mask), if it has
+    // any, does nothing otherwise:
     bool ConvertAlphaToMask(unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD);
+    void ConvertAlphaToMask(unsigned char mr, unsigned char mg, unsigned char mb,
+                            unsigned char threshold = wxIMAGE_ALPHA_THRESHOLD);
+
 
     // This method converts an image where the original alpha
     // information is only available as a shades of a colour
@@ -361,6 +368,9 @@ public:
     int GetWidth() const;
     int GetHeight() const;
 
+    wxSize GetSize() const
+        { return wxSize(GetWidth(), GetHeight()); }
+
     // Gets the type of image found by LoadFile or specified with SaveFile
     wxBitmapType GetType() const;