Fixing IconRef Build re adding support for reading icns files

include/wx/osx/cocoa/private.h

@@ -39,6 +39,7 @@ void WXDLLIMPEXP_CORE wxOSXDrawNSImage(
 WX_NSImage WXDLLIMPEXP_CORE wxOSXGetSystemImage(const wxString& name);
 WX_NSImage WXDLLIMPEXP_CORE wxOSXGetNSImageFromCGImage( CGImageRef image, double scale = 1.0, bool isTemplate = false);
 WX_NSImage WXDLLIMPEXP_CORE wxOSXGetNSImageFromIconRef( WXHICON iconref );
+WX_NSImage WXDLLIMPEXP_CORE wxOSXGetNSImageFromCFURL( CFURLRef urlref );
 WX_NSImage WXDLLIMPEXP_CORE wxOSXGetIconForType(OSType type );
 void WXDLLIMPEXP_CORE wxOSXSetImageSize(WX_NSImage image, CGFloat width, CGFloat height);
 wxBitmap WXDLLIMPEXP_CORE wxOSXCreateSystemBitmap(const wxString& id, const wxString &client, const wxSize& size);

src/osx/carbon/utilscocoa.mm

@@ -226,6 +226,13 @@ WXImage WXDLLIMPEXP_CORE wxOSXGetNSImageFromIconRef( WXHICON iconref )
     [newImage autorelease];
     return( newImage );
 }
+
+WX_NSImage WXDLLIMPEXP_CORE wxOSXGetNSImageFromCFURL( CFURLRef urlref )
+{
+    NSImage  *newImage = [[NSImage alloc] initWithContentsOfURL:(NSURL*)urlref];
+    [newImage autorelease];
+    return( newImage );
+}
 #endif
 
 CGImageRef WXDLLIMPEXP_CORE wxOSXGetCGImageFromImage( WXImage nsimage, CGRect* r, CGContextRef cg)

src/osx/core/bitmap.cpp

@@ -100,7 +100,7 @@ public:
 #if wxOSX_USE_ICONREF
     // caller should increase ref count if needed longer
     // than the bitmap exists
-    IconRef       GetIconRef();
+    IconRef       GetIconRef() const;
 #endif
 
     CGContextRef  GetBitmapContext() const;
@@ -125,7 +125,7 @@ private :
     bool          m_isTemplate;
 
 #if wxOSX_USE_ICONREF
-    IconRef       m_iconRef;
+    mutable IconRef       m_iconRef;
 #endif
 
     wxCFRef<CGContextRef>  m_hBitmap;
@@ -431,7 +431,7 @@ bool wxBitmapRefData::HasNativeSize()
 }
 
 #if wxOSX_USE_ICONREF
-IconRef wxBitmapRefData::GetIconRef()
+IconRef wxBitmapRefData::GetIconRef() const
 {
     if ( m_iconRef == NULL )
     {
@@ -1811,16 +1811,30 @@ bool wxICNSResourceHandler::LoadFile(wxBitmap *bitmap,
         theId = kHelpFolderIcon;
     }
 
+    WXImage img = NULL;
+
     if ( theId != 0 )
     {
         IconRef iconRef = NULL ;
+        
         __Verify_noErr(GetIconRef( kOnSystemDisk, kSystemIconsCreator, theId, &iconRef )) ;
-        if ( iconRef )
-        {
-            WXImage img = wxOSXGetNSImageFromIconRef(iconRef);
-            bitmap->Create(img);
-            return true;
-        }
+        img = wxOSXGetNSImageFromIconRef(iconRef);
+    }
+    else
+    {
+        wxCFRef<CFURLRef> iconURL;
+        wxCFStringRef resname(resourceName);
+        wxCFStringRef restype(GetExtension().Lower());
+
+        iconURL.reset(CFBundleCopyResourceURL(CFBundleGetMainBundle(), resname, restype, NULL));
+        
+        img = wxOSXGetNSImageFromCFURL(iconURL);
+    }
+    
+    if ( img )
+    {
+        bitmap->Create(img);
+        return true;
     }
 
     return wxBundleResourceHandler::LoadFile( bitmap, resourceName, type, desiredWidth, desiredHeight);