only use native NSImage dimension

include/wx/osx/cocoa/private.h

@@ -37,6 +37,7 @@ WX_NSImage WXDLLIMPEXP_CORE wxOSXGetNSImageFromCGImage( CGImageRef image, double
 WX_NSImage WXDLLIMPEXP_CORE wxOSXGetNSImageFromIconRef( WXHICON iconref );
 WX_NSImage WXDLLIMPEXP_CORE wxOSXGetIconForType(OSType type );
 void WXDLLIMPEXP_CORE wxOSXSetImageSize(WX_NSImage image, CGFloat width, CGFloat height);
+CGSize WXDLLIMPEXP_CORE wxOSXGetImageSize(WX_NSImage image);
 CGImageRef WXDLLIMPEXP_CORE wxOSXCreateCGImageFromNSImage( WX_NSImage nsimage, double *scale = NULL );
 CGImageRef WXDLLIMPEXP_CORE wxOSXGetCGImageFromNSImage( WX_NSImage nsimage, CGRect* r, CGContextRef cg);
 CGContextRef WXDLLIMPEXP_CORE wxOSXCreateBitmapContextFromNSImage( WX_NSImage nsimage, bool *isTemplate = NULL);

src/osx/carbon/icon.cpp

@@ -42,11 +42,8 @@ public:
     virtual bool IsOk() const wxOVERRIDE { return m_nsImage != NULL; }
     virtual void Free();
 
-    void SetWidth( int width ) { m_width = width; }
-    void SetHeight( int height ) { m_height = height; }
-
-    int GetWidth() const { return m_width; }
-    int GetHeight() const { return m_height; }
+    int GetWidth() const { return (int) wxOSXGetImageSize(m_nsImage).width; }
+    int GetHeight() const { return (int) wxOSXGetImageSize(m_nsImage).height; }
 
     WX_NSImage GetNSImage() const;
 
@@ -55,9 +52,6 @@ private:
     void Create( NSImage* icon, int desiredWidth, int desiredHeight );
     NSImage* m_nsImage;
 
-    int m_width;
-    int m_height;
-
     // We can (easily) copy m_iconRef so we don't implement the copy ctor.
     wxDECLARE_NO_COPY_CLASS(wxIconRefData);
 };
@@ -78,24 +72,18 @@ wxIconRefData::wxIconRefData( WXHICON iconref, int desiredWidth, int desiredHeig
     ReleaseIconRef(iconref);
 }
 
-void wxIconRefData::Create( NSImage* icon, int desiredWidth, int desiredHeight )
+void wxIconRefData::Create( NSImage* icon, int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight) )
 {
     if ( icon )
     {
         m_nsImage = icon;
         wxMacCocoaRetain(icon);
     }
-
-    // Standard sizes
-    SetWidth( desiredWidth == -1 ? 32 : desiredWidth ) ;
-    SetHeight( desiredHeight == -1 ? 32 : desiredHeight ) ;
 }
 
 void wxIconRefData::Init()
 {
     m_nsImage = NULL;
-    m_width =
-    m_height = 0;
 }
 
 void wxIconRefData::Free()

src/osx/carbon/utilscocoa.mm

@@ -297,6 +297,11 @@ void wxOSXSetImageSize(WX_NSImage image, CGFloat width, CGFloat height)
     [image setSize:NSMakeSize(width, height)];
 }
 
+CGSize wxOSXGetImageSize(WX_NSImage image)
+{
+    return NSSizeToCGSize([image size]);
+}
+
 CGImageRef wxOSXCreateCGImageFromNSImage( WX_NSImage nsimage, double *scaleptr )
 {
     // based on http://www.mail-archive.com/cocoa-dev@lists.apple.com/msg18065.html