CoreText实现图文混排和点击事件(4)

                    CGRect imageDrawRect;
                    imageDrawRect.size = CGSizeMake(30, 30);
                    imageDrawRect.origin.x = runRect.origin.x + lineOrigin.x;
                    imageDrawRect.origin.y = lineOrigin.y;
                    CGContextDrawImage(context, imageDrawRect, image.CGImage);
                }
            }
        }
    }
    CGContextRestoreGState(context);
}
//接受触摸事件
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    //获取UITouch对象
    UITouch *touch = [touches anyObject];
    //获取触摸点击当前view的坐标位置
    CGPoint location = [touch locationInView:self];
    NSLog(@"touch:%@",NSStringFromCGPoint(location));
    //获取每一行
    CFArrayRef lines = CTFrameGetLines(_frame);
    CGPoint origins[CFArrayGetCount(lines)];
    //获取每行的原点坐标
    CTFrameGetLineOrigins(_frame, CFRangeMake(0, 0), origins);
    CTLineRef line = NULL;
    CGPoint lineOrigin = CGPointZero;
    for (int i= 0; i < CFArrayGetCount(lines); i++)
    {
        CGPoint origin = origins[i];
        CGPathRef path = CTFrameGetPath(_frame);
        //获取整个CTFrame的大小
        CGRect rect = CGPathGetBoundingBox(path);
        NSLog(@"origin:%@",NSStringFromCGPoint(origin));
        NSLog(@"rect:%@",NSStringFromCGRect(rect));
        //坐标转换，把每行的原点坐标转换为uiview的坐标体系
        CGFloat y = rect.origin.y + rect.size.height - origin.y;
        NSLog(@"y:%f",y);
        //判断点击的位置处于那一行范围内
        if ((location.y <= y) && (location.x >= origin.x))