我有一个自定义UIImageView
插入这样的子层:
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
small_ = frame;
float newX = self.center.x - ((self.frame.size.width*SELECTED_SCALE_VALUE)*0.5);
float newY = self.center.y - ((self.frame.size.height*SELECTED_SCALE_VALUE)*0.5);
big_ = CGRectMake(newX, newY, self.frame.size.width*SELECTED_SCALE_VALUE, self.frame.size.height*SELECTED_SCALE_VALUE);
[self setupSubviews];
}
return self;
}
- (void)setupSubviews
{
shadowImage_ = [[UIImage imageNamed:@"gallery_shadow_frame"] resizableImageWithCapInsets:UIEdgeInsetsMake(20, 20, 20, 20)];
shadowImageView_ = [[UIImageView alloc] initWithFrame:[self shadowFrame]];
shadowImageView_.image = shadowImage_;
shadowImageView_.backgroundColor = [UIColor blueColor];
[self.layer insertSublayer:[shadowImageView_ layer] atIndex:0];
}
当我后来调整它的框架大小时,UIImageView
它会剪辑子层:
- (void)makeBig
{
self.frame = big_;
// shadowImageView_.frame = [self shadowFrame];
}
- (void)makeSmall
{
self.frame = small_;
// shadowImageView_.frame = [self shadowFrame];
}
为了给出一个完整的图片,还有这个:
- (CGRect)shadowFrame
{
int x = -X_BORDER;
int y = -Y_BORDER;
int width = self.frame.size.width + X_BORDER * 2;
int height = self.frame.size.height + Y_BORDER * 2;
return CGRectMake(x, y, width, height);
}
我如何调整大小UIImageView
,但防止它剪裁它shadowImageView_ sublayer
?