Question

我使用Interface Builder创建了NSWindowController和NSViewController，然后，我删除了NSWindow's标题栏，以便我可以自定义Window。我创建了一个类子类NSWindow并在类中做了以下事情。

override var canBecomeKey: Bool {
    return true
}

override var canBecomeMain: Bool {
    return true
}

我也在NSWindowController中设置了这些：

{  
    self.window?.becomeKey()
    self.window?.isMovableByWindowBackground = true
    self.window?.isMovable = true;
    self.window?.acceptsMouseMovedEvents = true
}

从这里开始，可以拖动自定义窗口，
但是当我将NSViewController作为NSWindowController's ContentViewController时，我无法拖动customWindow。

这里可能会发生什么？

Answer 1

之前我遇到过这个问题，这是我的解决方案有效（虽然它是在Objective-C中，所以只是把它扔到那里以防万一）：

@property BOOL mouseDownInTitle;

- (void)mouseDown:(NSEvent *)theEvent
{
   self.initialLocation = [theEvent locationInWindow];
   NSRect windowFrame = [self frame];
   NSRect titleFrame = NSMakeRect(0, windowFrame.size.height-40, windowFrame.size.width, 40);
   NSPoint currentLocation = [theEvent locationInWindow];

   if(NSPointInRect(currentLocation, titleFrame))
   {
      self.mouseDownInTitle = YES;
   }
}

- (void)mouseDragged:(NSEvent *)theEvent
{
   if( self.mouseDownInTitle )
   {
      NSRect screenVisibleFrame = [[NSScreen mainScreen] visibleFrame];
      NSRect windowFrame = [self frame];

      NSPoint newOrigin = windowFrame.origin;
      NSPoint currentLocation = [theEvent locationInWindow];



      // Update the origin with the difference between the new mouse location and the old mouse location.
      newOrigin.x += (currentLocation.x - self.initialLocation.x);
      newOrigin.y += (currentLocation.y - self.initialLocation.y);

      // Don't let window get dragged up under the menu bar
      if ((newOrigin.y + windowFrame.size.height) > (screenVisibleFrame.origin.y + screenVisibleFrame.size.height)) {
         newOrigin.y = screenVisibleFrame.origin.y + (screenVisibleFrame.size.height - windowFrame.size.height);
      }

      [self setFrameOrigin:newOrigin];
   }
}

Answer 2

此处的控制因素是视图的mouseDownCanMoveWindow属性。默认情况下，依赖于其isOpaque属性。如果您或您的某个超类重写isOpaque以返回true，则mouseDownCanMoveWindow的默认实现将返回false。如果你希望它的行为不同，那么你也必须覆盖它。

无法拖动或移动自定义NSWindow

2 个答案: