clipsToBounds/masksToBounds的区别

clipsToBounds -> UIView : 指视图上的子视图,如果超出父视图的部分就截取掉,

masksToBounds -> CALayer : 指视图的图层上的子图层,如果超出父图层的部分就截取掉

clipsToBounds执行时调用自己涂层的maskToBounds方法

-(BOOL)[UIView(Rendering) clipsToBounds] +0 3091938a 55      pushl  %ebp [phone]b 89e5     movl  %esp,%ebp [phone]d e800000000    calll  0x30919392 [phone]      popl  %ecx [phone]b4508     movl  0x08(%ebp),%eax [phone]b5004     movl  0x04(%eax),%edx    (CALayer)_layer [phone]b8186cb1301   movl  0x0113cb86(%ecx),%eax   masksToBounds [phone]f 89450c     movl  %eax,0x0c(%ebp) [phone]a2 895508     movl  %edx,0x08(%ebp) [phone]a5 c9      leave [phone]a6 e92e211801    jmpl  0x31a9b4d9