mirror of
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111 lines
3.4 KiB
C#
111 lines
3.4 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2016 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using Greenshot.Drawing;
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using Greenshot.Plugin.Drawing;
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using GreenshotPlugin.Core;
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using System.Collections.Generic;
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using System.Drawing;
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namespace Greenshot.Memento
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{
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/// <summary>
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/// The DrawableContainerBoundsChangeMemento makes it possible to undo-redo an IDrawableContainer resize & move
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/// </summary>
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public class DrawableContainerBoundsChangeMemento : IMemento
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{
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private readonly List<Point> _points = new List<Point>();
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private readonly List<Size> _sizes = new List<Size>();
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private IDrawableContainerList _listOfdrawableContainer;
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private void StoreBounds()
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{
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foreach (IDrawableContainer drawableContainer in _listOfdrawableContainer)
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{
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_points.Add(drawableContainer.Location);
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_sizes.Add(drawableContainer.Size);
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}
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}
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public DrawableContainerBoundsChangeMemento(IDrawableContainerList listOfdrawableContainer)
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{
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_listOfdrawableContainer = listOfdrawableContainer;
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StoreBounds();
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}
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public DrawableContainerBoundsChangeMemento(IDrawableContainer drawableContainer)
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{
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_listOfdrawableContainer = new DrawableContainerList
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{
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drawableContainer
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};
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_listOfdrawableContainer.Parent = drawableContainer.Parent;
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StoreBounds();
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}
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public void Dispose()
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{
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Dispose(true);
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}
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protected virtual void Dispose(bool disposing)
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{
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if (disposing)
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{
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_listOfdrawableContainer?.Dispose();
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}
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_listOfdrawableContainer = null;
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}
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public bool Merge(IMemento otherMemento)
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{
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var other = otherMemento as DrawableContainerBoundsChangeMemento;
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if (other != null)
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{
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if (ObjectExtensions.CompareLists(_listOfdrawableContainer, other._listOfdrawableContainer))
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{
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// Lists are equal, as we have the state already we can ignore the new memento
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return true;
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}
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}
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return false;
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}
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public IMemento Restore()
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{
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var oldState = new DrawableContainerBoundsChangeMemento(_listOfdrawableContainer);
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for (int index = 0; index < _listOfdrawableContainer.Count; index++)
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{
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IDrawableContainer drawableContainer = _listOfdrawableContainer[index];
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// Before
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drawableContainer.Invalidate();
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drawableContainer.Left = _points[index].X;
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drawableContainer.Top = _points[index].Y;
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drawableContainer.Width = _sizes[index].Width;
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drawableContainer.Height = _sizes[index].Height;
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// After
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drawableContainer.Invalidate();
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drawableContainer.Parent.Modified = true;
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}
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return oldState;
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}
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}
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}
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