Window title bar is a "dead zone" - there is no NSView<X11Window> objects there,

so it's possible, for example, to open a menu and move window (and menu bar will not receive
correct event and will "fell through" its main window.
Fix this - override -sendEvent: method for QuartzWindow and check if mouse event is "inside" titlebar.


git-svn-id: http://root.cern.ch/svn/root/trunk@43938 27541ba8-7e3a-0410-8455-c3a389f83636

graf2d/cocoa/inc/X11Events.h

@@ -75,9 +75,10 @@ public:
    //If it's a focus view, cancel focus.
    void CheckUnmappedView(Window_t winID);
 
-private:
    bool HasPointerGrab()const;
 
+private:
+
    //Used both by grab and non-grab case.
    void GenerateCrossingEvent(NSView<X11Window> *viewUnderPointer, NSEvent *theEvent, EXMagic detail);
    void GenerateCrossingEventActiveGrab(NSView<X11Window> *eventView, NSEvent *theEvent);

graf2d/cocoa/src/QuartzWindow.mm

@@ -862,6 +862,36 @@ void print_mask_info(ULong_t mask)
    [self orderOut : self];
 }
 
+//Events.
+
+//______________________________________________________________________________
+- (void) sendEvent : (NSEvent *) theEvent
+{
+   assert(fContentView != nil && "sendEvent, content view is nil");
+
+   if (theEvent.type == NSLeftMouseDown || theEvent.type == NSRightMouseDown) {
+      const NSPoint windowPoint = [theEvent locationInWindow];
+      const NSPoint viewPoint =  [fContentView convertPointFromBase : windowPoint];
+      if (viewPoint.y <= 0 && windowPoint.y >= 0) {
+         //Very special case: mouse is in a title bar. 
+         //There are not NSView<X11Window> object in this area,
+         //this event will never go to any QuartzView, and this
+         //can be a problem: if drop-down menu is open and
+         //you move window using title-bar, ROOT's menu will
+         //"fell through" the main window, which is weird.
+         TGCocoa *vx = dynamic_cast<TGCocoa *>(gVirtualX);
+         assert(vx != nullptr && "sendEvent, gVirtualX is either null or not of TGCocoa type");
+         if (vx->GetEventTranslator()->HasPointerGrab())
+            vx->GetEventTranslator()->GenerateButtonReleaseEvent(fContentView, theEvent, theEvent.type == NSLeftMouseDown ? kButton1 : kButton3);//yes, button release???
+      }
+   }
+
+   //Always call default version.
+   [super sendEvent : theEvent];
+}
+
+
+
 //NSWindowDelegate's methods.
 
 //______________________________________________________________________________

graf2d/cocoa/src/X11Events.mm

@@ -1450,7 +1450,8 @@ void EventTranslator::GenerateButtonReleaseEventActiveGrab(NSView<X11Window> *ev
             candidateView = Detail::FindViewToPropagateEvent(candidateView, kButtonReleaseMask, fButtonGrabView, fGrabEventMask);
             if (candidateView)//We have such a view, send event to a corresponding ROOT's window.
                Detail::SendButtonReleaseEvent(candidateView, theEvent, btn);
-         }
+         } else if (fGrabEventMask & kButtonReleaseMask)
+            Detail::SendButtonReleaseEvent(fButtonGrabView, theEvent, btn);
       } else {//Report to the grab view, if it has a corresponding bit set.
          if (fGrabEventMask & kButtonReleaseMask)
             Detail::SendButtonReleaseEvent(fButtonGrabView, theEvent, btn);