private void UserControl_DragEnter(object sender, DragEventArgs e)
{
try
{
if (_isDragging)
{
return;
}
if (e.Data.GetDataPresent("stackPanelDragItem"))
{
ViewForegroundControlHeader control = sender as ViewForegroundControlHeader;
if (control == null)
{
return;
}
else if (control.DataContext == null)
{
return;
}
ViewModelImagingLayerDragObject dragObject = (ViewModelImagingLayerDragObject)e.Data.GetData("stackPanelDragItem");
ViewModelImagingLayer model = control.DataContext as ViewModelImagingLayer;
if (dragObject.ViewModel != model)
{
control.SetCurrentValue(BackgroundProperty, new SolidColorBrush(Color.FromRgb(100, 100, 100)));
_isDragging = true;
}
}
}
catch { }
}
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 UserControl_DragLeave(object sender, DragEventArgs e)
{
try
{
if (_isDragging)
{
_isDragging = false;
ViewForegroundControlHeader control = sender as ViewForegroundControlHeader;
control.SetCurrentValue(BackgroundProperty, new SolidColorBrush(Color.FromArgb(0, 0, 0, 0)));
}
}
catch { }
}
private void UserControl_DragOver(object sender, DragEventArgs e)
{
try
{
if (!_isDragging)
{
return;
}
if (e.Data.GetDataPresent("stackPanelDragItem"))
{
ViewForegroundControlHeader control = sender as ViewForegroundControlHeader;
if (control == null)
{
return;
}
else if (control.DataContext == null)
{
return;
}
ViewModelImagingLayer model = control.DataContext as ViewModelImagingLayer;
ViewModelImagingLayerDragObject dragObject = (ViewModelImagingLayerDragObject)e.Data.GetData("stackPanelDragItem");
if (dragObject.ViewModel != model)
{
if (model == null)
{
return;
}
ViewModelImagingComponent stableComponent = model.ImagingComponent;
int movingIndex = stableComponent.ImageProperties.DragComponentIndex;
int stableIndex = stableComponent.ParentListIndex;
if (movingIndex == stableIndex)
{
return;
}
if (Math.Abs(movingIndex - stableIndex) == 1)
{
Point delta = e.GetPosition(control);
if (movingIndex < stableIndex)
{
if (delta.X < 20)
{
return;
}
}
else
{
if (delta.X > control.ActualWidth - 20)
{
return;
}
}
double deadZone = control.ActualWidth - dragObject.Width;
if (deadZone > 0)
{
if (movingIndex < stableIndex)
{
if (delta.X <= deadZone)
{
return;
}
}
else if (movingIndex > stableIndex)
{
if (delta.X >= dragObject.Width)
{
return;
}
}
}
}
stableComponent.MoveRelativeComponent(stableComponent);
e.Handled = true;
}
}
}
catch { }
}