private int GetInsertionIndex(TreeViewDropPosition pos, ref T group)
{
int insertionIndex = group.Children.Count;
switch (pos)
{
case TreeViewDropPosition.Before:
if (group.Parent == null)
{
insertionIndex = groups.IndexOf(group);
group = null;
}
else
{
insertionIndex = group.Parent.Children.IndexOf(group);
group = group.Parent;
}
break;
case TreeViewDropPosition.After:
if (group.Parent == null)
{
insertionIndex = Math.Min(groups.Count, groups.IndexOf(group) + 1);
group = null;
}
else
{
insertionIndex = Math.Min(group.Parent.Children.Count, group.Parent.Children.IndexOf(group) + 1);
group = group.Parent;
}
break;
}
return(insertionIndex);
}
public void HandleDragMotion(object o, DragMotionArgs args)
{
TreePath path;
TreeViewDropPosition position = TreeViewDropPosition.IntoOrAfter;
GetPathAtPos(args.X, args.Y, out path);
if (path == null)
{
return;
}
// Tags can be dropped into another tag
SetDragDestRow(path, position);
// Scroll if within 20 pixels of the top or bottom of the tag list
if (args.Y < 20)
{
Vadjustment.Value -= 30;
}
else if (((o as Gtk.Widget).Allocation.Height - args.Y) < 20)
{
Vadjustment.Value += 30;
}
}
void DisableDragInto(TreePath path, DragContext context, uint time, TreeViewDropPosition pos)
{
if (pos == TreeViewDropPosition.IntoOrAfter)
{
pos = TreeViewDropPosition.After;
}
else if (pos == TreeViewDropPosition.IntoOrBefore)
{
pos = TreeViewDropPosition.Before;
}
SetDragDestRow(path, pos);
Gdk.Drag.Status(context, context.SuggestedAction, time);
}
protected TViewModel GetTimelineAtPosition(int x, int y, out TreeIter iter, out TreeViewDropPosition pos)
{
TreePath path;
GetDestRowAtPos(x, y, out path, out pos);
if (path == null)
{
iter = TreeIter.Zero;
pos = TreeViewDropPosition.After;
return(null);
}
Model.GetIter(out iter, path);
var timeline = Model.GetValue(iter, COL_DATA) as TViewModel;
iter = ConvertToRootIter(iter);
return(timeline);
}
public void HandleDragMotion(object o, DragMotionArgs args)
{
TreePath path;
TreeViewDropPosition position = TreeViewDropPosition.IntoOrAfter;
GetPathAtPos(args.X, args.Y, out path);
if (path == null)
{
return;
}
// Tags can be dropped before, after, or into another tag
if (args.Context.Targets[0].Name == "application/x-fspot-tags")
{
Gdk.Rectangle rect = GetCellArea(path, Columns[0]);
double vpos = Math.Abs(rect.Y - args.Y) / (double)rect.Height;
if (vpos < 0.2)
{
position = TreeViewDropPosition.Before;
}
else if (vpos > 0.8)
{
position = TreeViewDropPosition.After;
}
}
SetDragDestRow(path, position);
// Scroll if within 20 pixels of the top or bottom of the tag list
if (args.Y < 20)
{
Vadjustment.Value -= 30;
}
else if (((o as Gtk.Widget).Allocation.Height - args.Y) < 20)
{
Vadjustment.Value += 30;
}
}
void DisableDragInto(TreePath path, DragContext context, uint time, TreeViewDropPosition pos)
{
if (pos == TreeViewDropPosition.IntoOrAfter) {
pos = TreeViewDropPosition.After;
} else if (pos == TreeViewDropPosition.IntoOrBefore) {
pos = TreeViewDropPosition.Before;
}
SetDragDestRow (path, pos);
dropPos = pos;
Gdk.Drag.Status (context, context.SuggestedAction, time);
}
public void Insert
(IntPtr handle, IntPtr ins, TreeViewDropPosition pos)
{
pointer_list_model_insert(Raw, handle, ins, (uint)pos);
}
