Macos 为什么我的CALayer被我的NSView剪掉了?
这让我相信,默认情况下,子层可以扩展到宿主视图的边界之外,而不会被剪裁。但对我来说,情况并非如此 以下是我如何初始化托管自定义视图的图层:Macos 为什么我的CALayer被我的NSView剪掉了?,macos,cocoa,core-animation,calayer,Macos,Cocoa,Core Animation,Calayer,这让我相信,默认情况下,子层可以扩展到宿主视图的边界之外,而不会被剪裁。但对我来说,情况并非如此 以下是我如何初始化托管自定义视图的图层: - (id)initWithFrame:(NSRect)frame { self = [super initWithFrame:frame]; if (self != nil) { mBaseImage = [[NSImage imageNamed: @"Button.png"] retain]; mSlide
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self != nil) {
mBaseImage = [[NSImage imageNamed: @"Button.png"] retain];
mSliderImage = [[NSImage imageNamed: @"Track.png"] retain];
mRootLayer = [CALayer layer];
mRootLayer.masksToBounds = NO;
[self setLayer: mRootLayer ];
[self setWantsLayer: YES];
mRootLayer.contents = mBaseImage;
mSliderLayer = [CALayer layer];
[mRootLayer addSublayer: mSliderLayer];
NSSize imSize = [mSliderImage size];
NSRect sliderBounds = NSMakeRect( 0.0f, 0.0f, imSize.width, imSize.height );
mSliderLayer.bounds = sliderBounds;
mSliderLayer.contents = mSliderImage;
mSliderLayer.position = NSMakePoint( 31.0f, 31.0f );
}
return self;
}
主机视图和用作其内容的图像为62x62,而子层图像为90x10。但整个过程都被限制在62x62的范围内。我遗漏了什么?技巧似乎是视图必须包含在另一个具有层的视图(可能是窗口的内容视图)中。(有文件记录吗?技巧似乎是视图必须包含在另一个具有层的视图(可能是窗口的内容视图)中。(有记录吗?)