为 NSView 创建投影 - Cocoa
我正在尝试在 NSView 周围创建一个阴影，就像 NSWindow 如何使用其阴影一样，但我遇到了一些困难。我为 NSView 创建了一个类，我正在为其创建投影，并且我使用此代码作为重写方法：
-(void)drawRect:(NSRect)dirtyRect {
NSRect rect = NSInsetRect([self bounds], 10.0, 10.0);
NSShadow *dropShadow = [[[NSShadow alloc] init] autorelease];
[dropShadow setShadowColor:[NSColor blackColor]];
[dropShadow setShadowBlurRadius:5];
[dropShadow setShadowOffset:NSMakeSize(0,-3)];
[NSGraphicsContext saveGraphicsState];
[dropShadow set];
NSRectFill(rect);
[NSGraphicsContext restoreGraphicsState];
[super drawRect:dirtyRect];
}
这并没有真正创建我正在查看的投影。
这是我想要瞄准的阴影...
而是通过 NSView 创建一条线，看起来像视图范围内的边框。有人对此有什么想法吗？
I'm trying to create a drop shadow surrounding the NSView like how NSWindow does it with its shadow, but I'm having some difficulty. I created a class for the NSView I'm creating the drop shadow for and I'm using this code for the overriding method:
-(void)drawRect:(NSRect)dirtyRect {
NSRect rect = NSInsetRect([self bounds], 10.0, 10.0);
NSShadow *dropShadow = [[[NSShadow alloc] init] autorelease];
[dropShadow setShadowColor:[NSColor blackColor]];
[dropShadow setShadowBlurRadius:5];
[dropShadow setShadowOffset:NSMakeSize(0,-3)];
[NSGraphicsContext saveGraphicsState];
[dropShadow set];
NSRectFill(rect);
[NSGraphicsContext restoreGraphicsState];
[super drawRect:dirtyRect];
}
This doesn't really create a drop shadow in which I'm looking.
Here is the shadow I'm trying to aim for...
rather creates a line through the NSView that seems like a border within the bounds of the view. Anyone got any ideas for this?
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我也遇到过类似的阴影问题，因为 NSView 剪切了它的边界。
当我使用图层支持视图时我修复了它。我只需将超级视图的
wantsLayer属性设置为 YES.. 即 [[view superView] setWantsLayer:YES] 并为视图设置阴影 [view setShadow:dropShadow]< /强>。I have faced similar shadow issues because NSView clips its bounds.
I fixed it when I used a layer backed view. I simply set the superview's
wantsLayerproperty to YES.. i.e [[view superView] setWantsLayer:YES] and set shadow for view [view setShadow:dropShadow].