Question

我创建了NSViewController。它管理我的视图层次结构并在一个NSBox中设置其他视图。

- (void)displayViewController:(ManagingViewController *)vc
{
NSWindow *w = [box window];
NSView *v = [vc view];
[box setContentView:v];
}

我有两个备用视图。视图具有Quartz Composer根层和CALayer子层。

 // ----------
 // Root Layer
 // ----------
 QCCompositionLayer* rootLayer = [QCCompositionLayer compositionLayerWithFile:[[NSBundle mainBundle]
                  pathForResource:@"BackgroundHome" 
                  ofType:@"qtz"]];
[self setLayer:rootLayer];
[self setWantsLayer:YES];


 // ----------
 // Menu Layer
 // ----------
 menusLayer = [CALayer layer];
 menusLayer.frame = rootLayer.bounds;
 menusLayer.layoutManager =[CAConstraintLayoutManager layoutManager];

 [rootLayer addSublayer:menusLayer];


 // --------------
 // Menu Items
 // --------------
 NSInteger i;
 for (i=0;i<[section count];i++) {
 NSString *name = [section objectAtIndex:i];

 CATextLayer *menuItemLayer = [CATextLayer layer];

 menuItemLayer.string = name;
 menuItemLayer.font = @"Lucida-Grande";
 menuItemLayer.fontSize = fontSize;
 menuItemLayer.foregroundColor = CGColorCreateGenericRGB(1.0,1.0,1.0,1.0);

 [menuItemLayer addConstraint:[CAConstraint
       constraintWithAttribute:kCAConstraintMaxY
       relativeTo:@"superlayer"
       attribute:kCAConstraintMaxY
       offset:-(i*height+spacing+initialOffset)]];
 [menuItemLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMidX
            relativeTo:@"superlayer"
             attribute:kCAConstraintMidX]];

 [menusLayer addSublayer:menuItemLayer];
 }
 [menusLayer layoutIfNeeded];

我运行我的应用程序，我可以替换视图，但我只看QCCompositionLayer。当我直接使用我的自定义NSView类，没有NSView层次结构时，我可以看到所有。哪里出错？

请原谅我糟糕的英语，谢谢

NSViewController。核心动画子图层没有绘图

0 个答案: