/// <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>
/// Change the <see cref="P:Northwoods.Go.GoObject.Parent" /> of an object to be the common subgraph that
/// contains two given objects, or if there is no such subgraph, add the object to the given layer.
/// </summary>
/// <param name="obj">the <see cref="T:Northwoods.Go.GoObject" /> to reparent</param>
/// <param name="child1">an object that may belong to a <see cref="T:Northwoods.Go.GoSubGraphBase" /></param>
/// <param name="child2">another object that may belong to a <see cref="T:Northwoods.Go.GoSubGraphBase" /></param>
/// <param name="behind">whether to add the <paramref name="obj" /> at the beginning of the list
/// of the subgraph's children (thus behind all other subgraph children), or at the end of the list
/// (thus appearing in front of all the other subgraph children)</param>
/// <param name="layer">
/// the <see cref="T:Northwoods.Go.GoLayer" /> to which the <paramref name="obj" /> should be added,
/// if there is no common parent <see cref="T:Northwoods.Go.GoSubGraphBase" /> for <paramref name="child1" /> and
/// <paramref name="child2" />
/// </param>
/// <remarks>
/// All of the arguments to this method should be non-null.
/// </remarks>
public static void ReparentToCommonSubGraph(GoObject obj, GoObject child1, GoObject child2, bool behind, GoLayer layer)
{
GoSubGraphBase a = FindParentSubGraph(child1);
GoSubGraphBase b = FindParentSubGraph(child2);
GoObject goObject = GoObject.FindCommonParent(a, b);
while (goObject != null && !(goObject is GoSubGraphBase))
{
goObject = goObject.Parent;
}
GoSubGraphBase goSubGraphBase = goObject as GoSubGraphBase;
if (obj.Parent == goSubGraphBase && obj.Layer != null)
{
return;
}
if (obj.Parent == null && obj.Layer == null)
{
if (goSubGraphBase != null)
{
if (behind)
{
goSubGraphBase.InsertBefore(null, obj);
}
else
{
goSubGraphBase.InsertAfter(null, obj);
}
}
else
{
layer.Add(obj);
}
}
else
{
GoCollection goCollection = new GoCollection();
goCollection.Add(obj);
if (goSubGraphBase != null)
{
goSubGraphBase.AddCollection(goCollection, reparentLinks: false);
}
else
{
layer.AddCollection(goCollection, reparentLinks: false);
}
}
}
/// <summary>
/// Make sure each link, either directly in the given collection, or connected to the nodes in
/// the given collection, belong to the appropriate <see cref="T:Northwoods.Go.GoSubGraphBase" />.
/// </summary>
/// <param name="coll"></param>
/// <param name="behind">whether to add the <paramref name="coll" /> at the beginning of the list
/// of the subgraph's children (thus behind all other subgraph children), or at the end of the list
/// (thus appearing in front of all the other subgraph children)</param>
/// <param name="layer">the <see cref="T:Northwoods.Go.GoLayer" /> for links whose ports do not both belong to a <see cref="T:Northwoods.Go.GoSubGraphBase" /></param>
/// <remarks>
/// This calls <see cref="M:Northwoods.Go.GoSubGraphBase.ReparentToCommonSubGraph(Northwoods.Go.GoObject,Northwoods.Go.GoObject,Northwoods.Go.GoObject,System.Boolean,Northwoods.Go.GoLayer)" /> for each <see cref="T:Northwoods.Go.IGoLink" /> in the
/// <paramref name="coll" /> collection, or for each <see cref="T:Northwoods.Go.IGoLink" /> connected to each <see cref="T:Northwoods.Go.IGoNode" />
/// in the <paramref name="coll" /> collection.
/// </remarks>
public static void ReparentAllLinksToSubGraphs(IGoCollection coll, bool behind, GoLayer layer)
{
GoCollection goCollection = new GoCollection();
foreach (GoObject item in coll)
{
goCollection.Add(item);
}
foreach (GoObject item2 in goCollection)
{
IGoNode goNode = item2 as IGoNode;
if (goNode != null)
{
foreach (IGoLink link in goNode.Links)
{
if (link != null && link.FromPort != null && link.ToPort != null)
{
ReparentToCommonSubGraph(link.GoObject, link.FromPort.GoObject, link.ToPort.GoObject, behind, layer);
}
}
}
else
{
IGoPort goPort = item2 as IGoPort;
if (goPort != null)
{
foreach (IGoLink link2 in goPort.Links)
{
if (link2 != null && link2.FromPort != null && link2.ToPort != null)
{
ReparentToCommonSubGraph(link2.GoObject, link2.FromPort.GoObject, link2.ToPort.GoObject, behind, layer);
}
}
}
else
{
IGoLink goLink = item2 as IGoLink;
if (goLink != null && goLink.FromPort != null && goLink.ToPort != null)
{
ReparentToCommonSubGraph(goLink.GoObject, goLink.FromPort.GoObject, goLink.ToPort.GoObject, behind, layer);
}
}
}
}
}
