void HandleDragBegin(object o, Gtk.DragBeginArgs args)
{
EventsRootWidget.DragEnd += HandleWidgetDragEnd;
EventsRootWidget.DragFailed += HandleDragFailed;
EventsRootWidget.DragDataDelete += HandleDragDataDelete;
EventsRootWidget.DragDataGet += HandleWidgetDragDataGet;
}
void HandleWidgetDragBegin(object o, Gtk.DragBeginArgs args)
{
// If SetDragSource has not been called, ignore the event
if (DragDropInfo.SourceDragAction == default(Gdk.DragAction))
{
return;
}
DragStartData sdata = null;
ApplicationContext.InvokeUserCode(delegate {
sdata = EventSink.OnDragStarted();
});
if (sdata == null)
{
return;
}
DragDropInfo.CurrentDragData = sdata.Data;
if (sdata.ImageBackend != null)
{
var gi = (GtkImage)sdata.ImageBackend;
var img = gi.ToPixbuf(ApplicationContext, Widget);
Gtk.Drag.SetIconPixbuf(args.Context, img, (int)sdata.HotX, (int)sdata.HotY);
}
HandleDragBegin(null, args);
}
private static void SetDragImage(Gtk.TreeView menuLayout, Gtk.DragBeginArgs args)
{
var selection = menuLayout.Selection;
var firstSelectedPath = selection.GetSelectedRows().First();
Gtk.TreeIter iter;
if (menuLayout.Model.GetIter(out iter, firstSelectedPath))
{
var firstDraggedItem = menuLayout.Model.GetValue(iter, 0) as FileNodeViewModel;
string text;
Gdk.Pixbuf icon;
if (selection.CountSelectedRows() > 1)
{
text = "<Multiple Items>";
icon = firstDraggedItem is FolderViewModel ? DragMultipleItemsFolderImage : DragMultipleItemsProgramImage;
}
else
{
text = firstDraggedItem.LongName;
icon = firstDraggedItem.Icon;
}
var dragWidget = new DragDropImage(icon, text);
Gtk.Drag.SetIconWidget(args.Context, dragWidget, 0, 0);
}
}
void HandleWidgetDragBegin(object o, Gtk.DragBeginArgs args)
{
// If SetDragSource has not been called, ignore the event
if (DragDropInfo.SourceDragAction == default(Gdk.DragAction))
{
return;
}
DragStartData sdata = null;
Toolkit.Invoke(delegate {
sdata = EventSink.OnDragStarted();
});
if (sdata == null)
{
return;
}
DragDropInfo.CurrentDragData = sdata.Data;
if (sdata.ImageBackend != null)
{
Gtk.Drag.SetIconPixbuf(args.Context, (Gdk.Pixbuf)sdata.ImageBackend, (int)sdata.HotX, (int)sdata.HotY);
}
HandleDragBegin(null, args);
}
/// <summary>
/// Handles the drag begin event.
/// </summary>
/// <param name="o">The menu layout Gtk.TreeView.</param>
/// <param name="args">The event data.</param>
protected void HandleDragBegin(object o, Gtk.DragBeginArgs args)
{
DebugDragDrop("HandleDragBegin");
var menuLayoutView = o as Gtk.TreeView;
SetDragImage(menuLayoutView, args);
}
void HandleDragBegin(object o, Gtk.DragBeginArgs args)
{
Console.WriteLine("Begin drag");
Widget.DragEnd += HandleWidgetDragEnd;
Widget.DragFailed += HandleDragFailed;
Widget.DragDataDelete += HandleDragDataDelete;
Widget.DragDataGet += HandleWidgetDragDataGet;
}
/// <summary>
/// Handles the drag begin event.
/// </summary>
/// <param name="o">The ROM list Gtk.TreeView.</param>
/// <param name="args">The event data.</param>
protected void HandleDragBegin(object o, Gtk.DragBeginArgs args)
{
var numItemsSelected = ViewModel.CurrentSelection.Count;
DebugDragDrop("HandleDragBegin: numItemsSelected: " + numItemsSelected);
var dragImage = numItemsSelected > 1 ? DragMultipleRomsImage : DragOneRomImage;
var dragText = numItemsSelected > 1 ? "<Multiple Items>" : ViewModel.CurrentSelection.First().Name;
var dragWidget = new DragDropImage(dragImage, dragText);
Gtk.Drag.SetIconWidget(args.Context, dragWidget, 0, 0);
}
void HandleWidgetDragBegin(object o, Gtk.DragBeginArgs args)
{
DragStartData sdata = null;
Toolkit.Invoke(delegate {
sdata = EventSink.OnDragStarted();
});
if (sdata == null)
{
return;
}
DragDropInfo.CurrentDragData = sdata.Data;
if (sdata.ImageBackend != null)
{
Gtk.Drag.SetIconPixbuf(args.Context, (Gdk.Pixbuf)sdata.ImageBackend, (int)sdata.HotX, (int)sdata.HotY);
}
HandleDragBegin(null, args);
}
void Begin(object o, Gtk.DragBeginArgs args)
{
Gtk.Drag.SetIconPixbuf(args.Context, Image, (int)HotX, (int)HotY);
Widget.DragBegin -= Begin;
}
protected void HandleTreeViewDragBegin(object o, Gtk.DragBeginArgs args)
{
Gdk.Pixmap pm = treeView.CreateRowDragIcon(treeView.Selection.GetSelectedRows()[0]);
Gdk.Pixbuf pb = Gdk.Pixbuf.FromDrawable(pm, pm.Colormap, 0, 0, 0, 0, -1, -1);
Gtk.Drag.SetIconPixbuf(args.Context, pb, 0, 0);
}