UILabel里字体带下划线

- (void)drawRect:(CGRect)rect

 

{

    

    CGContextRef ctx = UIGraphicsGetCurrentContext();

    

    const CGFloat* colors = CGColorGetComponents(self.textColor.CGColor);

    

    CGContextSetRGBStrokeColor(ctx, colors[0], colors[1], colors[2], 1.0); // RGBA

    

    CGContextSetLineWidth(ctx, 1.0f);

    CGSize tmpSize = [self.text sizeWithFont:self.font constrainedToSize:CGSizeMake(self.frame.size.width, 9999)];

    

    int height = tmpSize.height;

    

    int lineHeight = self.font.pointSize+4;

    

    int maxCount = height/lineHeight;

    

    float totalWidth = [self.text sizeWithFont:self.font constrainedToSize:CGSizeMake(1000, 9999)].width;

    

    for(int i=1;i<=maxCount;i++)

        

    {

        

        float width=0.0;

        if((i*self.frame.size.width-totalWidth)<=0)

            width = self.frame.size.width;

        else

            width = self.frame.size.width - (i* self.frame.size.width - totalWidth);

        CGContextMoveToPoint(ctx, 0, lineHeight*i-1);

        CGContextAddLineToPoint(ctx, width, lineHeight*i-1);

    }

    

    CGContextStrokePath(ctx);

    

    [super drawRect:rect];

}