- (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)ctx {
        NSString * data_title = @"Sample";
 
	UIGraphicsPushContext(ctx);
         .....
	UIFont *font = [UIFont boldSystemFontOfSize:13];
	CGSize titletextSize = [data_title sizeWithFont:font];
	textPoint.x = 0.8f * (CGRectGetWidth(layer.bounds) - titletextSize.width);
	CGContextDrawPath(ctx, kCGPathFill);
	[subject drawAtPoint:titlePoint withFont:font];
 	UIGraphicsPopContext();
 
}