Bug 104986 Backgound image uses an absolute path
Currently Chart uses an absolute path to indicate a backgournd image, that may cause the design unusable on other environments. Expected the background image can be definded in multiple ways like in report designer. e.g. URI(absolute path), File(relative path), Embedded Image(Encoded Image Data).
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/attribute/util/AttributeAdapterFactory.java
}
		public Object caseLocation( Location object )
		{
			return createLocationAdapter( );
		}
		public Object caseLocation3D( Location3D object )
		{
			return createLocation3DAdapter( );
		}
		public Object caseMarker( Marker object )
		{
			return createMarkerAdapter( );
		}
		public Object caseNumberFormatSpecifier( NumberFormatSpecifier object )
		{
			return createNumberFormatSpecifierAdapter( );
		}
		public Object casePalette( Palette object )
		{
			return createPaletteAdapter( );
		}
		public Object casePolygon( Polygon object )
		{
			return createPolygonAdapter( );
		}
		public Object caseRotation3D( Rotation3D object )
		{
			return createRotation3DAdapter( );
		}
		public Object caseScriptValue( ScriptValue object )