void HandleB2DragDrop(object sender, DragEventArgs e)
{
Console.WriteLine ("Dropped! " + e.Action);
Console.WriteLine ("Text: " + e.Data.GetValue (TransferDataType.Text));
Console.WriteLine ("Uris:");
foreach (var u in e.Data.Uris)
Console.WriteLine ("u:" + u);
e.Success = true;
b2.Label = "Dropped!";
}
void HandleWidgetDragDataReceived(object o, Gtk.DragDataReceivedArgs args)
{
dragDataRequests--;
if (!Util.GetSelectionData (args.SelectionData, dragData)) {
args.RetVal = false;
return;
}
if (dragDataRequests == 0) {
if (dragDataForMotion) {
DragOverEventArgs da = new DragOverEventArgs (lastDragPosition, dragData, ConvertDragAction (args.Context.Actions));
Toolkit.Invoke (delegate {
EventSink.OnDragOver (da);
});
Gdk.Drag.Status (args.Context, ConvertDragAction (da.AllowedAction), args.Time);
}
else {
// Use Context.Action here since that's the action selected in DragOver
var cda = ConvertDragAction (args.Context.Action);
DragEventArgs da = new DragEventArgs (lastDragPosition, dragData, cda);
Toolkit.Invoke (delegate {
EventSink.OnDragDrop (da);
});
Gtk.Drag.Finish (args.Context, da.Success, cda == DragDropAction.Move, args.Time);
}
}
}
internal bool DoDragDataReceived(Gdk.DragContext context, int x, int y, Gtk.SelectionData selectionData, uint info, uint time)
{
if (DragDropInfo.DragDataRequests == 0) {
// Got the data without requesting it. Create the datastore here
DragDropInfo.DragData = new TransferDataStore ();
DragDropInfo.LastDragPosition = new Point (x, y);
DragDropInfo.DragDataRequests = 1;
}
DragDropInfo.DragDataRequests--;
if (!Util.GetSelectionData (ApplicationContext, selectionData, DragDropInfo.DragData)) {
return false;
}
if (DragDropInfo.DragDataRequests == 0) {
if (DragDropInfo.DragDataForMotion) {
// If no specific action is set, it means that no key has been pressed.
// In that case, use Move or Copy or Link as default (when allowed, in this order).
var cact = ConvertDragAction (context.Actions);
if (cact != DragDropAction.Copy && cact != DragDropAction.Move && cact != DragDropAction.Link) {
if (cact.HasFlag (DragDropAction.Move))
cact = DragDropAction.Move;
else if (cact.HasFlag (DragDropAction.Copy))
cact = DragDropAction.Copy;
else if (cact.HasFlag (DragDropAction.Link))
cact = DragDropAction.Link;
else
cact = DragDropAction.None;
}
DragOverEventArgs da = new DragOverEventArgs (DragDropInfo.LastDragPosition, DragDropInfo.DragData, cact);
ApplicationContext.InvokeUserCode (delegate {
EventSink.OnDragOver (da);
});
OnSetDragStatus (context, (int)DragDropInfo.LastDragPosition.X, (int)DragDropInfo.LastDragPosition.Y, time, ConvertDragAction (da.AllowedAction));
return true;
}
else {
// Use Context.Action here since that's the action selected in DragOver
var cda = ConvertDragAction (context.Action);
DragEventArgs da = new DragEventArgs (DragDropInfo.LastDragPosition, DragDropInfo.DragData, cda);
ApplicationContext.InvokeUserCode (delegate {
EventSink.OnDragDrop (da);
});
Gtk.Drag.Finish (context, da.Success, cda == DragDropAction.Move, time);
return true;
}
} else
return false;
}
/// <summary>
/// Raises the DragDrop event.
/// </summary>
/// <param name='args'>
/// Arguments.
/// </param>
protected internal virtual void OnDragDrop(DragEventArgs args)
{
if (dragDrop != null)
dragDrop (this, args);
}
public void OnDragDrop(DragEventArgs args)
{
Parent.OnDragDrop (args);
}
internal bool DoDragDataReceived(Gdk.DragContext context, int x, int y, Gtk.SelectionData selectionData, uint info, uint time)
{
if (DragDropInfo.DragDataRequests == 0) {
// Got the data without requesting it. Create the datastore here
DragDropInfo.DragData = new TransferDataStore ();
DragDropInfo.LastDragPosition = new Point (x, y);
DragDropInfo.DragDataRequests = 1;
}
DragDropInfo.DragDataRequests--;
if (!Util.GetSelectionData (selectionData, DragDropInfo.DragData)) {
return false;
}
if (DragDropInfo.DragDataRequests == 0) {
if (DragDropInfo.DragDataForMotion) {
// This is a workaround to what seems to be a mac gtk bug.
// Suggested action is set to all when no control key is pressed
var cact = ConvertDragAction (context.Actions);
if (cact == DragDropAction.All)
cact = DragDropAction.Move;
DragOverEventArgs da = new DragOverEventArgs (DragDropInfo.LastDragPosition, DragDropInfo.DragData, cact);
Toolkit.Invoke (delegate {
EventSink.OnDragOver (da);
});
OnSetDragStatus (context, (int)DragDropInfo.LastDragPosition.X, (int)DragDropInfo.LastDragPosition.Y, time, ConvertDragAction (da.AllowedAction));
return true;
}
else {
// Use Context.Action here since that's the action selected in DragOver
var cda = ConvertDragAction (context.Action);
DragEventArgs da = new DragEventArgs (DragDropInfo.LastDragPosition, DragDropInfo.DragData, cda);
Toolkit.Invoke (delegate {
EventSink.OnDragDrop (da);
});
Gtk.Drag.Finish (context, da.Success, cda == DragDropAction.Move, time);
return true;
}
} else
return false;
}
protected override void OnDragDrop(DragEventArgs args)
{
Point position = args.Position;
position.X /= scaleFactor;
position.Y /= scaleFactor;
args.Success = true;
try {
string algoType = args.Data.GetValue(TransferDataType.Text).ToString();
PipelineNode node =
new PipelineNode(project, this, algoType, new Rectangle(position, PipelineNode.AbsMinNodeSize));
node.QueueRedraw += QueueRedraw;
SetNodePosition(node);
nodes.Add(node);
Log.Add(LogLevel.Verbose, this.GetType().Name, "New node added \"" + node + "\".");
EmitDataChanged();
this.QueueDraw();
} catch (Exception e) {
Console.WriteLine(e.StackTrace);
Console.WriteLine(e.Message);
args.Success = false;
Log.Add(LogLevel.Error, this.GetType().Name, "Failed to add new node.");
}
}
void HandleWidgetDragDataReceived(object o, Gtk.DragDataReceivedArgs args)
{
dragDataRequests--;
string type = Util.AtomToType (args.SelectionData.Target.Name);
if (type == null) {
args.RetVal = false;
return;
}
if (args.SelectionData.Length > 0) {
if (type == TransferDataType.Text)
dragData.AddText (args.SelectionData.Text);
else if (args.SelectionData.TargetsIncludeImage (false))
dragData.AddImage (WidgetRegistry.CreateFrontend<Xwt.Drawing.Image> (args.SelectionData.Pixbuf));
else if (type == TransferDataType.Uri) {
var uris = System.Text.Encoding.UTF8.GetString (args.SelectionData.Data).Split ('\n').Where (u => !string.IsNullOrEmpty(u)).Select (u => new Uri (u)).ToArray ();
dragData.AddUris (uris);
}
else
dragData.AddValue (type, args.SelectionData.Data);
}
if (dragDataRequests == 0) {
if (dragDataForMotion) {
DragOverEventArgs da = new DragOverEventArgs (lastDragPosition, dragData, ConvertDragAction (args.Context.Actions));
EventSink.OnDragOver (da);
Gdk.Drag.Status (args.Context, ConvertDragAction (da.AllowedAction), args.Time);
}
else {
// Use Context.Action here since that's the action selected in DragOver
var cda = ConvertDragAction (args.Context.Action);
DragEventArgs da = new DragEventArgs (lastDragPosition, dragData, cda);
EventSink.OnDragDrop (da);
Gtk.Drag.Finish (args.Context, da.Success, cda == DragDropAction.Move, args.Time);
}
}
}
