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//
// LayoutingQueueItem.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2015 jp
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Diagnostics;
using System.Collections.Generic;
namespace Crow
{
public enum LayoutingType : byte
{
None = 0x00,
X = 0x01,
Y = 0x02,
Width = 0x04,
Height = 0x08,
Sizing = 0x0C,
PositionChildren = 0x10,
ChildAddition = 0x20,
All = 0xFF
}
public class LayoutingQueueItem
{
public ILayoutable GraphicObject;
public LayoutingType LayoutType;
public LayoutingQueueItem (LayoutingType _layoutType, ILayoutable _graphicObject)
{
LayoutType = _layoutType;
GraphicObject = _graphicObject;
GraphicObject.RegisteredLayoutings |= LayoutType;
}
public void ProcessLayouting()
{
if (GraphicObject.Parent == null) {
//cancel layouting for object without parent, maybe some were in queue when
//removed from a listbox
Debug.WriteLine ("ERROR: processLayouting, no parent for: " + this.ToString ());
return;
}
if (!GraphicObject.UpdateLayout (LayoutType)) {
#if DEBUG_LAYOUTING
Debug.WriteLine ("Requeuing => " + this.ToString ());
#endif
GraphicObject.LayoutingTries ++;
if (GraphicObject.LayoutingTries < Interface.MaxLayoutingTries)
Interface.LayoutingQueue.Enqueue (this);
} else {
GraphicObject.LayoutingTries = 0;
#if DEBUG_LAYOUTING
Debug.WriteLine ("Layouting => " + this.ToString ());
#endif
}
}
public static implicit operator GraphicObject(LayoutingQueueItem queueItem)
{
return queueItem.GraphicObject as GraphicObject;
}
public static implicit operator LayoutingType(LayoutingQueueItem lqi)
{
return lqi.LayoutType;
}
public override string ToString ()
{
return string.Format ("{1}->{0}", LayoutType,GraphicObject.ToString());
}
}
}
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