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//
// CustomWidgetBackend.cs
//
// Author:
// Lluis Sanchez <lluis@xamarin.com>
//
// Copyright (c) 2011 Xamarin Inc
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using Xwt.Backends;
namespace Xwt.GtkBackend
{
public class CustomWidgetBackend: WidgetBackend, ICustomWidgetBackend
{
public CustomWidgetBackend ()
{
}
public override void Initialize ()
{
var w = new Gtk.EventBox ();
w.VisibleWindow = false;
Widget = w;
Widget.Show ();
}
WidgetBackend childBackend;
protected new Gtk.EventBox Widget {
get { return (Gtk.EventBox)base.Widget; }
set { base.Widget = value; }
}
public override Size GetPreferredSize (SizeConstraint widthConstraint, SizeConstraint heightConstraint)
{
if (childBackend == null)
return base.GetPreferredSize (widthConstraint, heightConstraint);
var size = childBackend.Frontend.Surface.GetPreferredSize (widthConstraint, heightConstraint, true);
return size;
}
public void SetContent (IWidgetBackend widget)
{
childBackend = (WidgetBackend)widget;
var newWidget = GetWidgetWithPlacement (widget);
var oldWidget = Widget.Child;
if (oldWidget == null)
Widget.Child = newWidget;
else {
GtkEngine.ReplaceChild (oldWidget, newWidget);
RemoveChildPlacement (oldWidget);
}
}
}
}
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