Treating adjacent tracking areas as one contiguous area - swift3

Question

I'm trying to present a UI of a title/less window when a mouse leaves a window's title or contentview, but not when moving from one to the other; in essence have the two tracking areas function as one (I resorted to this as I couldn't figure out how to create a single area when the title view is hidden):
override func mouseEntered(with theEvent: NSEvent) {
let hideTitle = (doc?.settings.autoHideTitle.value == true)
if theEvent.modifierFlags.contains(.shift) {
NSApp.activate(ignoringOtherApps: true)
}
switch theEvent.trackingNumber {
case closeTrackingTag:
Swift.print("close entered")
closeButton?.image = closeButtonImage
break
default:
Swift.print(String(format: "%# entered",
(theEvent.trackingNumber == titleTrackingTag
? "title" : "view")))
let lastMouseOver = mouseOver
mouseOver = true
updateTranslucency()
// view or title entered
if hideTitle && (lastMouseOver != mouseOver) {
updateTitleBar(didChange: !lastMouseOver)
}
}
}
override func mouseExited(with theEvent: NSEvent) {
let hideTitle = (doc?.settings.autoHideTitle.value == true)
switch theEvent.trackingNumber {
case closeTrackingTag:
Swift.print("close exited")
closeButton?.image = nullImage
break
default:
Swift.print(String(format: "%# exited",
(theEvent.trackingNumber == titleTrackingTag
? "title" : "view")))
let lastMouseOver = mouseOver
mouseOver = false
updateTranslucency()
if hideTitle && (lastMouseOver != mouseOver) {
updateTitleBar(didChange: lastMouseOver)
}
}
}
Additionally, there's a tracking rect on the close button to appear only when over. Anyway, from my tracer output I see the issue - mouse over window from beneath to over its title:
view entered
updateTitleBar
**view entered**
view exited
updateTitleBar
title entered
updateTitleBar
title exited
Note sure why I'm getting a second view entered event (view entered), but the movement out of the view and onto the adjacent title each triggers an updateTilebar() call which is visually stuttering - not remedied so far with animation:
fileprivate func docIconToggle() {
let docIconButton = panel.standardWindowButton(.documentIconButton)
if settings.autoHideTitle.value == false || mouseOver {
if let doc = self.document {
docIconButton?.image = (doc as! Document).displayImage
}
else
{
docIconButton?.image = NSApp.applicationIconImage
}
docIconButton?.isHidden = false
self.synchronizeWindowTitleWithDocumentName()
}
else
{
docIconButton?.isHidden = true
}
}
#objc func updateTitleBar(didChange: Bool) {
if didChange {
Swift.print("updateTitleBar")
if settings.autoHideTitle.value == true && !mouseOver {
NSAnimationContext.runAnimationGroup({ (context) -> Void in
context.duration = 1.0
panel.animator().titleVisibility = NSWindowTitleVisibility.hidden
panel.animator().titlebarAppearsTransparent = true
panel.animator().styleMask.formUnion(.fullSizeContentView)
}, completionHandler: {
self.docIconToggle()
})
} else {
NSAnimationContext.runAnimationGroup({ (context) -> Void in
context.duration = 1.0
panel.animator().titleVisibility = NSWindowTitleVisibility.visible
panel.animator().titlebarAppearsTransparent = false
panel.animator().styleMask.formSymmetricDifference(.fullSizeContentView)
}, completionHandler: {
self.docIconToggle()
})
}
}
}
So my question is about how to defer the actions when areas are adjacent.
They (titlebar & content view) are not siblings of each other so didn't think a hitTest() was doable but basically if I could tell if I was moving into the adjacent tracking area, I'd like it to be a no-op.
Any help with why animation isn't working would be a plus.

Answer 1

Not a true answer, but if you know the adjacent view's rect you can use the event's location to probe whether you'd want to ignore movements among adjacent views:
override func mouseExited(with theEvent: NSEvent) {
let hideTitle = (doc?.settings.autoHideTitle.value == true)
let location : NSPoint = theEvent.locationInWindow
switch theEvent.trackingNumber {
case closeTrackingTag:
Swift.print("close exited")
closeButton?.image = nullImage
break
default:
let vSize = self.window?.contentView?.bounds.size
// If we exit to the title bar area we're still "inside"
// and visa-versa, leaving title to content view.
if theEvent.trackingNumber == titleTrackingTag, let tSize = titleView?.bounds.size {
if location.x >= 0.0 && location.x <= (vSize?.width)! && location.y < ((vSize?.height)! + tSize.height) {
Swift.print("title -> view")
return
}
}
else
if theEvent.trackingNumber == viewTrackingTag {
if location.x >= 0.0 && location.x <= (vSize?.width)! && location.y > (vSize?.height)! {
Swift.print("view -> title")
return
}
}
mouseOver = false
updateTranslucency()
if hideTitle {
updateTitleBar(didChange: true)
}
Swift.print(String(format: "%# exited",
(theEvent.trackingNumber == titleTrackingTag
? "title" : "view")))
}
}