题
我想改变它的颜色,但我不知道要阉羊子NSScrollView或NSClipView。或者,如果拐角可以插入一个普通的NSView。
我不需要代码。如何做到这一点只是一个提示。
解决方案
通过mekentosj回答上计算器。类到子类是NSScrollView。
@interface MyScrollView : NSScrollView {
}
@end
@implementation MyScrollView
- (void)drawRect:(NSRect)rect{
[super drawRect: rect];
if([self hasVerticalScroller] && [self hasHorizontalScroller]){
NSRect vframe = [[self verticalScroller]frame];
NSRect hframe = [[self horizontalScroller]frame];
NSRect corner;
corner.origin.x = NSMaxX(hframe);
corner.origin.y = NSMinY(hframe);
corner.size.width = NSWidth(vframe);
corner.size.height = NSHeight(hframe);
// your custom drawing in the corner rect here
[[NSColor redColor] set];
NSRectFill(corner);
}
}
@end
其他提示
这是一种奇怪但与白色的那个角落只是继承NSScrollView与super.drawRect覆盖的draw()使我NSScrollView(不)填充。我测试了2倍,以确保,因为它并没有多大意义。
import Cocoa
class ThemedScrollView: NSScrollView {
override func drawRect(dirtyRect: NSRect) {
super.drawRect(dirtyRect)
}
}
下面是原来的答案的夫特变化,以及:
import Cocoa
class ThemedScrollView: NSScrollView {
override func drawRect(dirtyRect: NSRect) {
super.drawRect(dirtyRect)
if hasVerticalScroller && hasHorizontalScroller {
guard verticalScroller != nil && horizontalScroller != nil else { return }
let vFrame = verticalScroller!.frame
let hFrame = horizontalScroller!.frame
let square = NSRect(origin: CGPoint(x: hFrame.maxX, y: vFrame.maxY), size: CGSize(width: vFrame.width, height: hFrame.height))
let path = NSBezierPath(rect: square)
let fillColor = NSColor.redColor()
fillColor.set()
path.fill()
}
}
}
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