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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;
using System.Linq;
namespace Crow
{
[Flags]
public enum LayoutingType : byte
{
None = 0x00,
X = 0x01,
Y = 0x02,
Positioning = 0x03,
Width = 0x04,
Height = 0x08,
Sizing = 0x0C,
ArrangeChildren = 0x10,
All = 0xFF
}
/// <summary>
/// Element class of the LayoutingQueue
/// </summary>
public struct LayoutingQueueItem
{
/// <summary> Instance of widget to be layouted</summary>
public GraphicObject Layoutable;
/// <summary> Bitfield containing the element of the layout to performs (x|y|width|height)</summary>
public LayoutingType LayoutType;
/// <summary> Unsuccessfull UpdateLayout and requeueing count </summary>
public int LayoutingTries, DiscardCount;
#if DEBUG_LAYOUTING
public Stopwatch LQITime;
public GraphicObject graphicObject {
get { return Layoutable as GraphicObject; }
}
public string Name {
get { return graphicObject.Name; }
}
public string FullName {
get { return graphicObject.ToString(); }
}
public Measure Width {
get { return graphicObject.Width; }
}
public Measure Height {
get { return graphicObject.Height; }
}
public Rectangle Slot, NewSlot;
#endif
#region CTOR
public LayoutingQueueItem (LayoutingType _layoutType, GraphicObject _graphicObject)
{
LayoutType = _layoutType;
Layoutable = _graphicObject;
Layoutable.RegisteredLayoutings |= LayoutType;
LayoutingTries = 0;
DiscardCount = 0;
#if DEBUG_LAYOUTING
LQITime = new Stopwatch();
Slot = Rectangle.Empty;
NewSlot = Rectangle.Empty;
#endif
}
#endregion
public void ProcessLayouting()
{
if (Layoutable.Parent == null) {//TODO:improve this
//cancel layouting for object without parent, maybe some were in queue when
//removed from a listbox
#if DEBUG_LAYOUTING
Debug.WriteLine ("ERROR: processLayouting, no parent for: " + this.ToString ());
#endif
return;
}
#if DEBUG_LAYOUTING
LQITime.Start();
Debug.WriteLine ("LAYOUTING: " + this.ToString ());
#endif
LayoutingTries++;
if (!Layoutable.UpdateLayout (LayoutType)) {
if (LayoutingTries < Interface.MaxLayoutingTries) {
Layoutable.RegisteredLayoutings |= LayoutType;
Layoutable.CurrentInterface.LayoutingQueue.Enqueue (this);
} else if (DiscardCount < Interface.MaxDiscardCount) {
LayoutingTries = 0;
DiscardCount++;
Layoutable.RegisteredLayoutings |= LayoutType;
Layoutable.CurrentInterface.DiscardQueue.Enqueue (this);
}
#if DEBUG_LAYOUTING
else
Debug.WriteLine ("\tDELETED => " + this.ToString ());
#endif
}
#if DEBUG_LAYOUTING
else{
if (LayoutingTries > 2 || DiscardCount > 0)
Debug.WriteLine (this.ToString ());
}
LQITime.Stop();
#endif
}
public static implicit operator GraphicObject(LayoutingQueueItem queueItem)
{
return queueItem.Layoutable as GraphicObject;
}
public static implicit operator LayoutingType(LayoutingQueueItem lqi)
{
return lqi.LayoutType;
}
public override string ToString ()
{
#if DEBUG_LAYOUTING
return string.Format ("{2};{3};{4} {1}->{0}", LayoutType,Layoutable.ToString(),
LayoutingTries,DiscardCount,LQITime.ElapsedTicks);
#else
return string.Format ("{2};{3} {1}->{0}", LayoutType,Layoutable.ToString(),
LayoutingTries, DiscardCount);
#endif
}
}
public class LQIList : List<LayoutingQueueItem>{
// #if DEBUG_LAYOUTING
// public List<LayoutingQueueItem> GetRootLQIs(){
// return this.Where (lqi => lqi.wasTriggeredBy == null).ToList ();
// }
// #endif
}
}
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