void WidgetDropHandler(object sender, System.Windows.DragEventArgs e)
{
// Do a DragOverCheck before proceeding to the drop. This is required since in some cases the DragOver
// handler may not be called.
CheckDrop(sender, e);
if (e.Effects == DragDropEffects.None)
{
return;
}
WidgetDragLeaveHandler(sender, e);
var types = e.Data.GetFormats().Select(t => t.ToXwtTransferType()).ToArray();
var pos = e.GetPosition(Widget).ToXwtPoint();
var actualEffect = currentDragEffect;
e.Handled = true; // Prevent default handlers from being used.
e.Effects = DragDropEffects.None;
if ((enabledEvents & WidgetEvent.DragDropCheck) > 0)
{
var checkArgs = new DragCheckEventArgs(pos, types, actualEffect.ToXwtDropAction());
bool res = Context.InvokeUserCode(delegate {
eventSink.OnDragDropCheck(checkArgs);
});
if (checkArgs.Result == DragDropResult.Canceled || !res)
{
e.Effects = DragDropEffects.None;
return;
}
}
if ((enabledEvents & WidgetEvent.DragDrop) > 0)
{
var store = new TransferDataStore();
FillDataStore(store, e.Data, DragDropInfo.TargetTypes);
var args = new DragEventArgs(pos, store, actualEffect.ToXwtDropAction());
Context.InvokeUserCode(delegate {
eventSink.OnDragDrop(args);
});
if (args.Success)
{
e.Effects = actualEffect;
}
}
}
internal bool DoDragDrop(Gdk.DragContext context, int x, int y, uint time)
{
DragDropInfo.LastDragPosition = new Point(x, y);
var cda = ConvertDragAction(context.Action);
DragDropResult res;
if ((enabledEvents & WidgetEvent.DragDropCheck) == 0)
{
if ((enabledEvents & WidgetEvent.DragDrop) != 0)
{
res = DragDropResult.None;
}
else
{
res = DragDropResult.Canceled;
}
}
else
{
DragCheckEventArgs da = new DragCheckEventArgs(new Point(x, y), Util.GetDragTypes(context.Targets), cda);
ApplicationContext.InvokeUserCode(delegate {
EventSink.OnDragDropCheck(da);
});
res = da.Result;
if ((enabledEvents & WidgetEvent.DragDrop) == 0 && res == DragDropResult.None)
{
res = DragDropResult.Canceled;
}
}
if (res == DragDropResult.Canceled)
{
Gtk.Drag.Finish(context, false, false, time);
return(true);
}
else if (res == DragDropResult.Success)
{
Gtk.Drag.Finish(context, true, cda == DragDropAction.Move, time);
return(true);
}
else
{
// Undefined, we need more data
QueryDragData(context, time, false);
return(true);
}
}
void HandleWidgetDragDrop(object o, Gtk.DragDropArgs args)
{
lastDragPosition = new Point(args.X, args.Y);
var cda = ConvertDragAction(args.Context.Action);
DragDropResult res;
if ((enabledEvents & WidgetEvent.DragDropCheck) == 0)
{
if ((enabledEvents & WidgetEvent.DragDrop) != 0)
{
res = DragDropResult.None;
}
else
{
res = DragDropResult.Canceled;
}
}
else
{
DragCheckEventArgs da = new DragCheckEventArgs(new Point(args.X, args.Y), Util.GetDragTypes(args.Context.Targets), cda);
Toolkit.Invoke(delegate {
EventSink.OnDragDropCheck(da);
});
res = da.Result;
if ((enabledEvents & WidgetEvent.DragDrop) == 0 && res == DragDropResult.None)
{
res = DragDropResult.Canceled;
}
}
if (res == DragDropResult.Canceled)
{
args.RetVal = true;
Gtk.Drag.Finish(args.Context, false, false, args.Time);
}
else if (res == DragDropResult.Success)
{
args.RetVal = true;
Gtk.Drag.Finish(args.Context, true, cda == DragDropAction.Move, args.Time);
}
else
{
// Undefined, we need more data
args.RetVal = true;
QueryDragData(args.Context, args.Time, false);
}
}
void WidgetDropHandler(object sender, System.Windows.DragEventArgs e)
{
WidgetDragLeaveHandler(sender, e);
var types = e.Data.GetFormats().Select(t => t.ToXwtTransferType()).ToArray();
var pos = e.GetPosition(Widget).ToXwtPoint();
var actualEffect = currentDragEffect;
e.Handled = true; // Prevent default handlers from being used.
e.Effects = DragDropEffects.None;
if ((enabledEvents & WidgetEvent.DragDropCheck) > 0)
{
var checkArgs = new DragCheckEventArgs(pos, types, actualEffect.ToXwtDropAction());
bool res = Toolkit.Invoke(delegate {
eventSink.OnDragDropCheck(checkArgs);
});
if (checkArgs.Result == DragDropResult.Canceled || !res)
{
e.Effects = DragDropEffects.None;
return;
}
}
if ((enabledEvents & WidgetEvent.DragDrop) > 0)
{
var store = new TransferDataStore();
FillDataStore(store, e.Data, DragDropInfo.TargetTypes);
var args = new DragEventArgs(pos, store, actualEffect.ToXwtDropAction());
Toolkit.Invoke(delegate {
eventSink.OnDragDrop(args);
});
if (args.Success)
{
e.Effects = actualEffect;
}
}
}
void WidgetDropHandler(object sender, System.Windows.DragEventArgs e)
{
WidgetDragLeaveHandler (sender, e);
var types = e.Data.GetFormats ().Select (t => t.ToXwtTransferType ()).ToArray ();
var pos = e.GetPosition (Widget).ToXwtPoint ();
var actualEffect = currentDragEffect;
e.Handled = true; // Prevent default handlers from being used.
e.Effects = DragDropEffects.None;
if ((enabledEvents & WidgetEvent.DragDropCheck) > 0) {
var checkArgs = new DragCheckEventArgs (pos, types, actualEffect.ToXwtDropAction ());
bool res = Context.InvokeUserCode (delegate {
eventSink.OnDragDropCheck (checkArgs);
});
if (checkArgs.Result == DragDropResult.Canceled || !res) {
e.Effects = DragDropEffects.None;
return;
}
}
if ((enabledEvents & WidgetEvent.DragDrop) > 0) {
var store = new TransferDataStore ();
FillDataStore (store, e.Data, DragDropInfo.TargetTypes);
var args = new DragEventArgs (pos, store, actualEffect.ToXwtDropAction ());
Context.InvokeUserCode (delegate {
eventSink.OnDragDrop (args);
});
if (args.Success)
e.Effects = actualEffect;
}
}
