/// <summary>
/// Handles the Drag event which raises a DoDragDrop event used by the
/// DesignSurface to drag items from the Toolbox to the DesignSurface.
/// If the currently selected item is the pointer item then the drag drop
/// operation is not started.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnItemDrag(object sender, ItemDragEventArgs e)
{
if (e.Button == MouseButtons.Left &&
e.Item.GetType() == typeof(ListViewItem))
{
ToolboxItem lItem = (e.Item as ListViewItem).Tag as ToolboxItem;
if (lItem.TypeName != NameConsts.Pointer)
{
mIsDragging = true;
IToolboxService lToolboxService = mToolboxService as IToolboxService;
object lDataObject = lToolboxService.SerializeToolboxItem(lItem);
DrawingTool lTool = lItem.CreateComponents().FirstOrDefault() as DrawingTool;
lTool.CreatePersistence();
Rectangle lRect = lTool.SurroundingRect;
using (DragImage image = new DragImage(lTool.DefaultImage, lRect.Width / 2, lRect.Height / 2))
{
DoDragDrop(lDataObject, DragDropEffects.All);
}
mIsDragging = false;
}
}
}
protected override void OnDragDrop(DragEventArgs pArgs)
{
base.OnDragDrop(pArgs);
// drag DrawingTool & drop.
if (DraggingPoint != Point.Empty)
{
string data = pArgs.Data.GetData(typeof(string)) as string;
data.Split(',').All(e =>
{
int lIndex = Convert.ToInt32(e);
DrawingTool lDrawingTool = DrawingTools[lIndex];
Point lPoint = GetScrollablePoint(PointToClient(new Point(pArgs.X, pArgs.Y)));
InvalidateRect(lDrawingTool.Tracker.SurroundingRect);
lDrawingTool.DoDrop(new Point(lPoint.X - DraggingPoint.X, lPoint.Y - DraggingPoint.Y));
InvalidateRect(lDrawingTool.Tracker.SurroundingRect);
SelectedTool = lDrawingTool;
return(true);
});
IsDirty = true;
}
else
{
// drag ToolboxItem & drop.
ToolboxItem lItem = GetService <IToolboxService>().DeserializeToolboxItem(pArgs.Data);
DrawingTool lTool = lItem.CreateComponents(DesignerHost).FirstOrDefault() as DrawingTool;
if (lTool != null)
{
lTool.CreatePersistence();
Point lLocation = GetScrollablePoint(PointToClient(new Point(pArgs.X, pArgs.Y)));
Rectangle lRect = lTool.SurroundingRect;
lLocation.Offset(-lRect.Width / 2, -lRect.Height / 2);
lTool.Location = lLocation;
AddTool(lTool);
SelectedTool = lTool;
InvalidateRect(lTool.SurroundingRect);
}
}
}
