private void UserControl_MouseMove(object sender, MouseEventArgs e)
{
try
{
if (e.LeftButton == MouseButtonState.Pressed)
{
ViewForegroundControlHeader control = sender as ViewForegroundControlHeader;
if (control == null)
{
return;
}
else if (control.DataContext == null)
{
return;
}
DependencyObject parentTabItemDependencyObject = Xvue.Framework.Views.WPF.VisualTreeBrowser.GetAncestorByType(this, typeof(TabItem));
if (parentTabItemDependencyObject == null)
{
return;
}
TabItem parentTabItem = parentTabItemDependencyObject as TabItem;
if (!parentTabItem.IsSelected)
{
return;
}
ViewModelImagingLayer toMoveImageLayer = control.DataContext as ViewModelImagingLayer;
toMoveImageLayer.ImagingComponent.InitMoveComponent();
DataObject data = new DataObject();
ViewModelImagingLayerDragObject dragObject = new ViewModelImagingLayerDragObject(toMoveImageLayer, control.ActualWidth);
data.SetData("stackPanelDragItem", dragObject);
DependencyObject parentTabControlDependencyObject = Xvue.Framework.Views.WPF.VisualTreeBrowser.GetAncestorByType(this, typeof(TabControl));
DragDrop.DoDragDrop(control, data, DragDropEffects.Move);
//Prevent popup from not closing
if (parentTabControlDependencyObject != null)
{
TabControl parentTabControl = parentTabControlDependencyObject as TabControl;
parentTabControl.CaptureMouse();
parentTabControl.ReleaseMouseCapture();
}
}
}
catch { }
}
private void BeginDrag()
{
double lastMouseX = Mouse.GetPosition(tabPanel).X;
TabControl.CaptureMouse();
draggedTab = FindTabItemOn(lastMouseX);
selectedItem = tabs[TabControl.SelectedIndex];
if (draggedTab != null)
{
draggedTabDeltaX = lastMouseX - draggedTab.RenderTransform.Value.OffsetX;
if (!draggedTab.IsSelected)
{ // if draggedTab is not the selected one,
draggedTab.SetValue(Panel.ZIndexProperty, 50); // rearrange it to the top of unselected tab
TabControl.UpdateLayout();
}
}
}
private static void TabControl_PreviewMouseMove(object sender, MouseEventArgs e)
{
TabControl tabControl = (TabControl)sender;
Point point = e.GetPosition(tabControl);
if (tabControl.IsMouseCaptured)
{
TabTearOffBehavior.UpdateDragWindowLocation(tabControl);
Window dropWindow = TabTearOffBehavior.GetWindowMouseIsOver(e);
if (dropWindow == null)
{
return;
}
if (!dropWindow.IsActive)
{
dropWindow.Activate();
}
ITabTearOffHandler targetHandler;
TabControl targetTabControl = TabTearOffBehavior.FindTargetTabControl(dropWindow, out targetHandler);
Panel panel = ControlMethods.GetPanel(targetTabControl);
if (TabTearOffBehavior.IsMouseInDropLocation(e, targetTabControl, panel))
{
if (TabTearOffBehavior._adorner == null || !TabTearOffBehavior._adorner.AdornedElement.Equals(targetTabControl))
{
if (TabTearOffBehavior._adorner != null)
{
TabTearOffBehavior._adorner.Detach();
}
TabTearOffBehavior._adorner = new InsertionAdorner(targetTabControl, panel.GetOrientation());
}
TabTearOffBehavior._adorner.UpdateLocation(e);
}
else if (TabTearOffBehavior._adorner != null)
{
TabTearOffBehavior._adorner.Detach();
TabTearOffBehavior._adorner = null;
}
}
else if (TabTearOffBehavior.IsSufficientDragMove(point))
{
Rectangle contentRectangle = TabTearOffBehavior.CreateRectangle((Visual)TabTearOffBehavior.GetContent(tabControl));
Rectangle tabItemRectangle = TabTearOffBehavior.CreateRectangle(TabTearOffBehavior._activeTabItem);
Panel.SetZIndex(tabItemRectangle, 10);
StackPanel stackPanel = new StackPanel
{
Orientation = tabControl.TabStripPlacement == Dock.Right || tabControl.TabStripPlacement == Dock.Left ? Orientation.Horizontal : Orientation.Vertical,
Children =
{
tabItemRectangle
}
};
stackPanel.Children.Insert(tabControl.TabStripPlacement == Dock.Right || tabControl.TabStripPlacement == Dock.Bottom ? 0 : 1, contentRectangle);
TranslateTransform translateTransform = new TranslateTransform();
switch (tabControl.TabStripPlacement)
{
case Dock.Bottom:
translateTransform.Y = -1d;
break;
case Dock.Left:
translateTransform.X = 1d;
break;
case Dock.Right:
translateTransform.X = -1d;
break;
case Dock.Top:
translateTransform.Y = 1d;
break;
}
tabItemRectangle.RenderTransform = translateTransform;
TabTearOffBehavior._dragWindow = new Window
{
Topmost = true,
AllowsTransparency = true,
WindowStyle = WindowStyle.None,
IsHitTestVisible = false,
SizeToContent = SizeToContent.WidthAndHeight,
Background = Brushes.Transparent,
Content = new Border
{
Child = stackPanel,
Opacity = 0.75
}
};
TabTearOffBehavior.UpdateDragWindowLocation(tabControl);
TabTearOffBehavior._dragWindow.Show();
tabControl.MouseLeave -= TabTearOffBehavior.TabControl_MouseLeaveOrLostCapture;
tabControl.CaptureMouse();
e.Handled = true;
}
}