private void RemoveVideoFromInitParent(VideoPanelItem vpi)
{
_parent = vpi.Parent as Panel;
_lastIndex = _parent.Children.IndexOf(vpi);
_parent.Children.Remove(vpi);
_vpi = vpi;
_vpi.SetValue(DragDropTool.AllowDragProperty, false);
_parent.Visibility = Visibility.Collapsed;
}
//设置视频窗口的可拖拽属性。
private void SetDragDropParam(VideoPanelItem vpi)
{
vpi.SetValue(DragDropTool.AllowDropProperty, true);
vpi.SetValue(DragDropTool.DropHandlerProperty, new VideoPanelDropHandler());
vpi.SetValue(DragDropTool.DragHandlerProperty, new VideoPanelDragHandler());
//允许拖动
Binding binding = CreateBinding(vpi.DataContext, BindingMode.OneWay, "ControlViewModel.IsVisible");
vpi.SetBinding(DragDropTool.AllowDragProperty, binding);
//设置拖动数据
binding = CreateBinding(vpi.DataContext, BindingMode.OneWay, "ControlViewModel.VideoId");
vpi.SetBinding(DragDropData.DataProperty, binding);
//设置可视化
vpi.SetValue(DragDropVisual.ShadowVisibleProperty, true);
vpi.SetValue(DragDropVisual.ShadowColorProperty, Color.FromRgb(0, 255, 0));
vpi.SetValue(DragDropVisual.BorderThicknessProperty, new Thickness(2));
}