protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (e.LeftButton != MouseButtonState.Pressed)
dragStartPoint = null;
if (dragStartPoint.HasValue)
{
// XamlWriter.Save() has limitations in exactly what is serialized,
// see SDK documentation; short term solution only;
var xamlString = XamlWriter.Save(Content);
var dataObject = new DragObject();
dataObject.Xaml = xamlString;
var panel = VisualTreeHelper.GetParent(this) as WrapPanel;
if (panel != null)
{
// desired size for DesignerCanvas is the stretched Toolbox item size
var scale = 1.3;
dataObject.DesiredSize = new Size(panel.ItemWidth*scale, panel.ItemHeight*scale);
}
DragDrop.DoDragDrop(this, dataObject, DragDropEffects.Copy);
e.Handled = true;
}
}
private void UIElement_OnMouseMove(object sender, MouseEventArgs e)
{
OnMouseMove(e);
var senderFrameworkElement = sender as FrameworkElement;
if (senderFrameworkElement == null)
{
return;
}
if (e.LeftButton == MouseButtonState.Pressed)
{
// Package the data.
var vm = senderFrameworkElement.DataContext as InitialElementViewModel;
if (vm == null)
{
return;
}
//DataObject data = new DataObject();
//data.SetData(DataFormats.StringFormat, vm.Name);
////data.SetData("Double", circleUI.Height);
//data.SetData("Object", vm);
//data.SetText(vm.Name);
//data.SetText();
//var data = new DataObject();
//// Inititate the drag-and-drop operation.
//DragDrop.DoDragDrop(this, data, DragDropEffects.Copy | DragDropEffects.Move);
var dataObject = new DragObject();
dataObject.Xaml = string.Empty;
dataObject.InitialElementViewModel = vm;
var panel = VisualTreeHelper.GetParent(this) as WrapPanel;
if (panel != null)
{
// desired size for DesignerCanvas is the stretched Toolbox item size
var scale = 1.3;
dataObject.DesiredSize = new Size(panel.ItemWidth*scale, panel.ItemHeight*scale);
}
else
{
dataObject.DesiredSize = new Size(100, 100);
}
DragDrop.DoDragDrop(this, dataObject, DragDropEffects.Copy);
e.Handled = true;
}
}