Method mouseMoveEvent

src/3rdparty/Qt-Advanced-Docking-System/src/AutoHideTab.cpp:507–554

============================================================================

//============================================================================
void CAutoHideTab::mouseMoveEvent(QMouseEvent *ev)
{
	if (!(ev->buttons() & Qt::LeftButton)
	    || d->isDraggingState(DraggingInactive))
	{
		d->DragState = DraggingInactive;
		Super::mouseMoveEvent(ev);
		return;
	}

	// move floating window
	if (d->isDraggingState(DraggingFloatingWidget))
	{
		d->FloatingWidget->moveFloating();
		Super::mouseMoveEvent(ev);
		return;
	}

	// move tab
	if (d->isDraggingState(DraggingTab))
	{
		// Moving the tab is always allowed because it does not mean moving the
		// dock widget around
		//d->moveTab(ev);
	}

	auto MappedPos = mapToParent(ev->pos());
	bool MouseOutsideBar = (MappedPos.x() < 0)
	    || (MappedPos.x() > parentWidget()->rect().right());
	// Maybe a fixed drag distance is better here ?
	int DragDistanceY = qAbs(
	    d->GlobalDragStartMousePosition.y()
	        - internal::globalPositionOf(ev).y());
	if (DragDistanceY >= CDockManager::startDragDistance() || MouseOutsideBar)
	{
		// Floating is only allowed for widgets that are floatable
		// We can create the drag preview if the widget is movable.
		auto Features = d->DockWidget->features();
		if (Features.testFlag(CDockWidget::DockWidgetFloatable)
		    || (Features.testFlag(CDockWidget::DockWidgetMovable)))
		{
			d->startFloating();
		}
		return;
	}

	Super::mouseMoveEvent(ev);
}

//============================================================================
void CAutoHideTab::dragEnterEvent(QDragEnterEvent *ev)