restore ImageList::AddImage variant

correctly removed in 804e8617
but we will need it again soon

Change-Id: I52700cb4da0285bf08db20af2d7c314a37c4fee2

vcl/inc/vcl/image.hxx

@@ -103,6 +103,7 @@ public:
     Size            GetImageSize() const;
 
     void            AddImage( const OUString& rImageName, const Image& rImage );
+    void            AddImage( sal_uInt16 nNewId, const Image& rImage );
 
     void            ReplaceImage( const OUString& rImageName, const Image& rImage );
 

vcl/source/gdi/image.cxx

@@ -505,6 +505,21 @@ sal_uInt16 ImageList::ImplGetImageId( const OUString& rImageName ) const
         return 0;
 }
 
+void ImageList::AddImage( sal_uInt16 nId, const Image& rImage )
+{
+    DBG_CHKTHIS( ImageList, NULL );
+    DBG_CHKOBJ( &rImage, Image, NULL );
+    DBG_ASSERT( nId, "ImageList::AddImage(): ImageId == 0" );
+    DBG_ASSERT( GetImagePos( nId ) == IMAGELIST_IMAGE_NOTFOUND, "ImageList::AddImage() - ImageId already exists" );
+    DBG_ASSERT( rImage.mpImplData, "ImageList::AddImage(): Wrong Size" );
+    DBG_ASSERT( !mpImplData || (rImage.GetSizePixel() == mpImplData->maImageSize), "ImageList::AddImage(): Wrong Size" );
+
+    if( !mpImplData )
+        ImplInit( 0, rImage.GetSizePixel() );
+
+    mpImplData->AddImage( rtl::OUString(), nId, rImage.GetBitmapEx());
+}
+
 void ImageList::AddImage( const OUString& rImageName, const Image& rImage )
 {
     DBG_ASSERT( GetImagePos( rImageName ) == IMAGELIST_IMAGE_NOTFOUND, "ImageList::AddImage() - ImageName already exists" );