public override void OnMouseMove(MouseActionEventArgs e)
{
base.OnMouseMove(e);
Resolved = Resolved && Source != null;
if (Resolved && (e.Button != MouseActionButtons.Left))
{
EndAction();
}
if (Resolved && !Dragging)
{
Dragging = true;
InprocDragDrop.Dragging = true;
InprocDragDrop.Data = new GraphCursor <IVisual, IVisualEdge>(Scene.Graph, Source);
try {
var startData =
new DragStartData(
DragDropViz.TransferDataOfVisual(Scene.Graph, Source),
DragDropAction.All,
GetDragImageBackend(Scene.Graph, Source),
e.Location.X, e.Location.Y);
DragDropHandler.DragStart(startData);
} catch {} finally {
EndAction();
}
}
}
void WidgetMouseMoveForDragHandler(object o, MouseEventArgs e)
{
if ((enabledEvents & WidgetEvent.DragStarted) == 0)
{
return;
}
if (e.LeftButton != MouseButtonState.Pressed)
{
return;
}
if (DragDropInfo.DragRect.IsEmpty)
{
SetupDragRect(e);
}
if (DragDropInfo.DragRect.Contains(e.GetPosition(Widget)))
{
return;
}
DragStartData dragData = null;
Context.InvokeUserCode(delegate {
dragData = eventSink.OnDragStarted();
});
if (dragData != null)
{
DragStart(dragData);
}
DragDropInfo.DragRect = Rect.Empty;
}
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);
}
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);
}
public void DragStart(DragStartData sdata)
{
Gdk.DragAction action = ConvertDragAction(sdata.DragAction);
DragDropInfo.CurrentDragData = sdata.Data;
Widget.DragBegin += HandleDragBegin;
if (sdata.ImageBackend != null)
{
IconInitializer.Init(Widget, (Gdk.Pixbuf)sdata.ImageBackend, sdata.HotX, sdata.HotY);
}
Gtk.Drag.Begin(Widget, Util.BuildTargetTable(sdata.Data.DataTypes), action, 1, Gtk.Global.CurrentEvent);
}
public void DragStart(DragStartData sdata)
{
AllocEventBox();
Gdk.DragAction action = ConvertDragAction(sdata.DragAction);
DragDropInfo.CurrentDragData = sdata.Data;
EventsRootWidget.DragBegin += HandleDragBegin;
if (sdata.ImageBackend != null)
{
var img = ((GtkImage)sdata.ImageBackend).ToPixbuf(ApplicationContext, Widget);
IconInitializer.Init(EventsRootWidget, img, sdata.HotX, sdata.HotY);
}
Gtk.Drag.Begin(EventsRootWidget, Util.BuildTargetTable(sdata.Data.DataTypes), action, 1, Gtk.Global.CurrentEvent ?? new Gdk.Event(IntPtr.Zero));
}
public override void DragStart(DragStartData data)
{
if (data.Data == null)
{
throw new ArgumentNullException("data");
}
var ds = Widget.CreateDragOperation();
var dsData = data.Data;
ds.SetDragImage(GetDragImage(), data.HotX, data.HotY);
ds.Data.DataRequestCallback += t => data.Data.GetValue(t);
foreach (var t in data.Data.DataTypes)
{
ds.Data.AddType(t);
}
ds.Finished += (s, e) => OnDragFinished(e);
ds.Start();
}
public void DragStart(DragStartData data)
{
if (data.Data == null)
{
throw new ArgumentNullException("data");
}
DataObject dataObj = data.Data.ToDataObject();
if (data.ImageBackend != null)
{
AdornedWindow = GetParentWindow();
AdornedWindow.AllowDrop = true;
var e = (UIElement)AdornedWindow.Content;
Adorner = new ImageAdorner(e, data.ImageBackend);
AdornedLayer = AdornerLayer.GetAdornerLayer(e);
AdornedLayer.Add(Adorner);
AdornedWindow.DragOver += AdornedWindowOnDragOver;
}
Widget.Dispatcher.BeginInvoke((Action)(() => {
var effect = DragDrop.DoDragDrop(Widget, dataObj, data.DragAction.ToWpfDropEffect());
OnDragFinished(this, new DragFinishedEventArgs(effect == DragDropEffects.Move));
if (Adorner != null)
{
AdornedLayer.Remove(Adorner);
AdornedLayer = null;
Adorner = null;
AdornedWindow.AllowDrop = false;
AdornedWindow.DragOver -= AdornedWindowOnDragOver;
AdornedWindow = null;
}
}));
}
/// <summary>
/// Starts a drag operation originated in this widget
/// </summary>
/// <param name='data'>
/// Drag operation arguments
/// </param>
public override void DragStart(DragStartData data)
{
if (data.Data == null)
{
throw new ArgumentNullException("data");
}
if (data.ImageBackend != null)
{
ShowDragImage(data);
}
var dataObj = data.Data.ToSwf();
//Backend.BeginInvoke((Action)(() => {
var effect = Backend.DoDragDrop(dataObj, data.DragAction.ToSwf());
OnDragFinished(new DragFinishedEventArgs(effect == System.Windows.Forms.DragDropEffects.Move));
HideDragImage();
//}));
}
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);
}
public void DragStart(DragStartData sdata)
{
var lo = Widget.ConvertPointToBase(new PointF(Widget.Bounds.X, Widget.Bounds.Y));
lo = Widget.Window.ConvertBaseToScreen(lo);
var ml = NSEvent.CurrentMouseLocation;
var pb = NSPasteboard.FromName(NSPasteboard.NSDragPasteboardName);
if (pb == null)
{
throw new InvalidOperationException("Could not get pasteboard");
}
if (sdata.Data == null)
{
throw new ArgumentNullException("data");
}
InitPasteboard(pb, sdata.Data);
var img = (NSImage)sdata.ImageBackend;
var pos = new PointF(ml.X - lo.X - (float)sdata.HotX, lo.Y - ml.Y - (float)sdata.HotY + img.Size.Height);
Widget.DragImage(img, pos, new SizeF(0, 0), NSApplication.SharedApplication.CurrentEvent, pb, Widget, true);
}
public virtual void DragStart(DragStartData data)
{
}
/// <summary> /// Starts a drag operation originated in this widget /// </summary> /// <param name='data'> /// Drag operation arguments /// </param> public abstract void DragStart(DragStartData data);
protected override void ShowDragImage(DragStartData data)
{
}
public void DragStart(DragStartData data)
{
throw new NotImplementedException();
}
internal void DragStart(DragStartData sdata)
{
Backend.DragStart(sdata);
}
protected virtual void ShowDragImage(DragStartData data)
{
}
