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 caseGradient( Gradient object )
		{
			return createGradientAdapter( );
		}
		public Object caseImage( Image object )
		{
			return createImageAdapter( );
		}
		public Object caseInsets( Insets object )
		{
			return createInsetsAdapter( );
		}
		public Object caseInteractivity( Interactivity object )
		{
			return createInteractivityAdapter( );
		}
		public Object caseJavaDateFormatSpecifier(
				JavaDateFormatSpecifier object )
		{
			return createJavaDateFormatSpecifierAdapter( );
		}
		public Object caseJavaNumberFormatSpecifier(
				JavaNumberFormatSpecifier object )
		{
			return createJavaNumberFormatSpecifierAdapter( );
		}
		public Object caseLineAttributes( LineAttributes object )
		{
			return createLineAttributesAdapter( );