private void PasteSplashData(Transaction transaction, EditableView pnlView)
{
DataObject data = (DataObject)Clipboard.GetDataObject();
byte[] buffer = (byte[])data.GetData("Splash data", false);
// will be nothing if deserialisation failed
if (buffer == null)
{
Debug.Fail("Deserialisation failed");
return;
}
using (MemoryStream stream = new MemoryStream(buffer, false))
using (DataReader reader = new DataReader(stream, FileMarkers.ShapeList))
{
List <Datum> list = reader.ReadDataList();
// cannot insert objects directly as that would mean pasting twice inserted 2 objects with same ID
Mapping hashIDChanges = new Mapping();
DatumList newList = new DatumList();
RectangleF bounds = RectangleF.Empty; // work out existing bounds of list
bool includesShapes = false;
foreach (Datum datum in list)
{
if (datum is Shape)
{
// assumed that all shapes need to be created into page
Shape create = (Shape)datum.Clone(hashIDChanges);
transaction.Create(create);
newList.Add(create);
Geometry.Extend(ref bounds, create.MinimalBounds); // minimal makes, for example, the snapping of axes better
includesShapes = true;
}
else if (datum is SharedBase resource)
{
// no need to clone these as they are effectively invariant
if (CurrentDocument.FindExistingSharedResource <Datum>(resource.ID) == null)
{
transaction.Edit(CurrentDocument);
CurrentDocument.AddSharedResource(resource);
// if ID exists in this document it is assumed to be same object
}
}
else if (datum is ButtonStyle buttonStyle)
{
// as Shape, but don't add to page
// if IsShared it is not cloned. Means styles in multi docs will share ID, which is good as further pasting in will reuse existing style
// does need to be added to document share
ButtonStyle create;
if (buttonStyle.IsShared)
{
create = buttonStyle;
if (CurrentDocument.GetButtonStyle(create.ID) == null)
{
CurrentDocument.AddButtonStyle(create); // is new to this doc - either by cloning, or
transaction.Create(create);
}
}
else
{
create = (ButtonStyle)buttonStyle.Clone(hashIDChanges);
transaction.Create(create);
}
newList.Add(create);
}
else
{
Debug.Fail("Datum not processed by by Paste: " + datum.TypeByte);
}
}
// want to centre shapes within current area, rather than pasting at original position (which leaves them on top of each other and largely invisible)
IShapeContainer container = CurrentPage;
if (includesShapes)
{
if (CurrentPage.SelectedCount == 1 && CurrentPage.SelectedShapes.First().AsContainer != null)
{
container = CurrentPage.SelectedShapes.First().AsContainer;
// but in SAW don't paste automatically into an empty container - chances are it's the item which was just copied!
// instead paste into that container's parent
if (!container.Any())
{
container = (container as Shape).Container.AsParentContainer;
}
}
PointF target = pnlView.ViewableArea().Centre();
// Or use cursor position if better
PointF cursor = pnlView.CursorPositionLocal;
// Automatically selects the drawing cursor if split cursors are used
// or the container
if (((Datum)container).TypeByte == (byte)Shape.Shapes.Container)
{
target = ((Shape)container).Bounds.Centre();
}
else if (cursor.X > 0 && cursor.Y > 0 && cursor.X < pnlView.Width && cursor.Y < pnlView.Height)
{
cursor = pnlView.MouseToData(cursor.ToPoint());
// And also need to check the cursor is within the page. the above just checked it was within the control (there may be some dead area displayed)
if (cursor.X < pnlView.ViewableArea().Width&& cursor.Y < pnlView.ViewableArea().Height)
{
target = cursor;
}
}
target.X -= bounds.Width / 2;
target.Y -= bounds.Height / 2; // where we want the top left to be
if (pnlView.SnapMode == Shape.SnapModes.Grid)
{
target = CurrentPage.Paper.SnapPoint2(target);
}
var transform = new TransformMove(target.X - bounds.X, target.Y - bounds.Y);
transaction.Edit((Datum)container);
foreach (Shape shape in newList.Values.OfType <Shape>()) // of type needed in case other stuff was mixed in with it
{
container.Contents.Add(shape);
shape.Parent = container;
shape.ApplyTransformation(transform);
}
container.FinishedModifyingContents(transaction);
}
foreach (Datum shape in newList.Values)
{
try
{
// order changed
shape.UpdateReferencesObjectsCreated(CurrentDocument, reader);
shape.UpdateReferencesIDsChanged(hashIDChanges, Globals.Root.CurrentDocument);
}
catch (Exception ex)
{
Utilities.LogSubError(ex);
}
}
List <Shape> newShapes = newList.Values.OfType <Shape>().ToList();
if (newShapes.Count > 0 && container == CurrentPage) // don't select the shapes when pasting into a container - leaves the container selected, which allows for more pastes
{
CurrentPage.SelectOnly(newShapes);
}
pnlView.InvalidateData(CurrentPage.SelectedRefreshBoundary(), StaticView.InvalidationBuffer.All);
}
}
