/// <summary>
/// Create a new selection object containing an image of all of the real selected objects.
/// </summary>
/// <returns>a new <see cref="T:Northwoods.Go.GoSelection" /> holding view objects that represent the
/// objects in the <see cref="P:Northwoods.Go.GoView.Selection" /></returns>
/// <remarks>
/// This creates a new <see cref="T:Northwoods.Go.GoSelection" /> for this view.
/// The objects that are in this selection have been added to the default
/// layer of the view.
/// </remarks>
public virtual GoSelection CreateDragSelection()
{
GoSelection goSelection = new GoSelection(null);
PointF position = base.CurrentObject.Position;
SizeF offset = GoTool.SubtractPoints(base.CurrentObject.Location, position);
GoDragRectangle goDragRectangle = new GoDragRectangle();
goDragRectangle.Bounds = base.CurrentObject.Bounds;
goDragRectangle.Offset = offset;
goDragRectangle.Visible = false;
base.View.Layers.Default.Add(goDragRectangle);
goSelection.Add(goDragRectangle);
GoCollection goCollection = new GoCollection();
goCollection.InternalChecksForDuplicates = false;
foreach (GoObject item in (EffectiveSelection != null) ? EffectiveSelection : base.Selection)
{
goCollection.Add(item.DraggingObject);
}
base.View.Document.Layers.SortByZOrder(goCollection);
RectangleF bounds = GoDocument.ComputeBounds(goCollection, base.View);
float num = 1E+21f;
float num2 = 1E+21f;
foreach (GoObject item2 in goCollection)
{
if (item2.Top < num)
{
num = item2.Top;
}
if (item2.Left < num2)
{
num2 = item2.Left;
}
}
float num3 = base.View.WorldScale.Width;
if (bounds.Width * num3 > 2000f || bounds.Height * num3 > 2000f)
{
num3 *= Math.Min(2000f / (bounds.Width * num3), 2000f / (bounds.Height * num3));
}
Bitmap bitmapFromCollection = base.View.GetBitmapFromCollection(goCollection, bounds, num3, paper: false);
GoDragImage goDragImage = new GoDragImage();
goDragImage.Image = bitmapFromCollection;
goDragImage.Bounds = new RectangleF(bounds.X, bounds.Y, (float)bitmapFromCollection.Width / num3, (float)bitmapFromCollection.Height / num3);
if (num < 1E+21f && num2 < 1E+21f)
{
goDragImage.Offset = new SizeF(num2 - bounds.X + offset.Width, num - bounds.Y + offset.Height);
}
else
{
goDragImage.Offset = offset;
}
base.View.Layers.Default.Add(goDragImage);
goSelection.Add(goDragImage);
return(goSelection);
}
/// <summary>
/// Produce a new <see cref="T:Northwoods.Go.GoSelection" /> that is the real set of objects
/// to be moved by <see cref="M:Northwoods.Go.GoView.MoveSelection(Northwoods.Go.GoSelection,System.Drawing.SizeF,System.Boolean)" /> or copied by
/// <see cref="M:Northwoods.Go.GoView.CopySelection(Northwoods.Go.GoSelection,System.Drawing.SizeF,System.Boolean)" />.
/// </summary>
/// <param name="coll"></param>
/// <param name="move">true for moving, false for copying</param>
/// <returns>a <see cref="T:Northwoods.Go.GoSelection" /> that is cached as <see cref="P:Northwoods.Go.GoToolDragging.EffectiveSelection" /></returns>
/// <remarks>
/// This method is used to try to avoid problems with double-moving
/// due to duplicate entries or both a parent and its child being in
/// the argument collection.
/// This also removes objects whose <see cref="P:Northwoods.Go.GoObject.DraggingObject" />
/// is null or has a false value for <see cref="M:Northwoods.Go.GoObject.CanMove" /> (if
/// <paramref name="move" /> is true) or a false value for <see cref="M:Northwoods.Go.GoObject.CanCopy" />
/// (if <paramref name="move" /> is false).
/// Furthermore this adds to the collection all links that have both
/// ports in the selection.
/// </remarks>
public virtual GoSelection ComputeEffectiveSelection(IGoCollection coll, bool move)
{
Dictionary <GoObject, bool> dictionary = new Dictionary <GoObject, bool>();
GoCollection goCollection = null;
GoSelection goSelection = new GoSelection(null);
foreach (GoObject item in coll)
{
GoObject draggingObject = item.DraggingObject;
if (draggingObject != null && !(move ? (!draggingObject.CanMove()) : (!draggingObject.CanCopy())) && !alreadyDragged(dictionary, draggingObject))
{
dictionary[draggingObject] = true;
if (!draggingObject.IsTopLevel)
{
if (goCollection == null)
{
goCollection = new GoCollection();
}
goCollection.Add(draggingObject);
}
goSelection.Add(draggingObject);
}
}
if (EffectiveSelectionIncludesLinks)
{
GoObject[] array = goSelection.CopyArray();
for (int i = 0; i < array.Length; i++)
{
IGoNode goNode = array[i] as IGoNode;
if (goNode != null)
{
foreach (IGoLink destinationLink in goNode.DestinationLinks)
{
if (!alreadyDragged(dictionary, destinationLink.GoObject) && (destinationLink.ToPort == null || alreadyDragged(dictionary, destinationLink.ToPort.GoObject)))
{
dictionary[destinationLink.GoObject] = true;
goSelection.Add(destinationLink.GoObject);
}
}
foreach (IGoLink sourceLink in goNode.SourceLinks)
{
if (!alreadyDragged(dictionary, sourceLink.GoObject) && (sourceLink.FromPort == null || alreadyDragged(dictionary, sourceLink.FromPort.GoObject)))
{
dictionary[sourceLink.GoObject] = true;
goSelection.Add(sourceLink.GoObject);
}
}
}
}
}
if (goCollection != null)
{
GoCollection goCollection2 = null;
foreach (GoObject item2 in goSelection)
{
GoObject draggingObject2 = item2.DraggingObject;
if (draggingObject2 is GoGroup)
{
foreach (GoObject item3 in goCollection)
{
if (item3.IsChildOf(draggingObject2))
{
if (goCollection2 == null)
{
goCollection2 = new GoCollection();
}
goCollection2.Add(item3);
}
}
}
}
if (goCollection2 != null)
{
foreach (GoObject item4 in goCollection2)
{
goSelection.Remove(item4);
}
return(goSelection);
}
}
return(goSelection);
}
