1 //
2 // PasteHistoryItem.cs
3 //
4 // Author:
5 //       Jonathan Pobst <monkey@jpobst.com>
6 //
7 // Copyright (c) 2010 Jonathan Pobst
8 //
9 // Permission is hereby granted, free of charge, to any person obtaining a copy
10 // of this software and associated documentation files (the "Software"), to deal
11 // in the Software without restriction, including without limitation the rights
12 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 // copies of the Software, and to permit persons to whom the Software is
14 // furnished to do so, subject to the following conditions:
15 //
16 // The above copyright notice and this permission notice shall be included in
17 // all copies or substantial portions of the Software.
18 //
19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 // THE SOFTWARE.
26 
27 using System;
28 using Cairo;
29 using Mono.Unix;
30 using Gtk;
31 
32 namespace Pinta.Core
33 {
34 	public class PasteHistoryItem : BaseHistoryItem
35 	{
36 		private Gdk.Pixbuf paste_image;
37 		private DocumentSelection old_selection;
38 
39 		public override bool CausesDirty { get { return true; } }
40 
PasteHistoryItem(Gdk.Pixbuf pasteImage, DocumentSelection oldSelection)41 		public PasteHistoryItem (Gdk.Pixbuf pasteImage, DocumentSelection oldSelection)
42 		{
43 			Text = Catalog.GetString ("Paste");
44 			Icon = Stock.Paste;
45 
46 			paste_image = pasteImage;
47 			old_selection = oldSelection;
48 		}
49 
Redo()50 		public override void Redo ()
51 		{
52 			Document doc = PintaCore.Workspace.ActiveDocument;
53 
54 			// Copy the paste to the temp layer
55 			doc.CreateSelectionLayer ();
56 			doc.ShowSelectionLayer = true;
57 
58 			using (Cairo.Context g = new Cairo.Context (doc.SelectionLayer.Surface)) {
59 				g.DrawPixbuf (paste_image, new Cairo.Point (0, 0));
60 			}
61 
62 			Swap ();
63 
64 			PintaCore.Workspace.Invalidate ();
65 			PintaCore.Tools.SetCurrentTool (Catalog.GetString ("Move Selected Pixels"));
66 		}
67 
Undo()68 		public override void Undo ()
69 		{
70 			Swap ();
71 
72 			PintaCore.Layers.DestroySelectionLayer ();
73 			PintaCore.Workspace.Invalidate ();
74 		}
75 
Dispose()76 		public override void Dispose ()
77 		{
78 			if (paste_image != null)
79 				(paste_image as IDisposable).Dispose ();
80 
81 			if (old_selection != null)
82 				old_selection.Dispose ();
83 		}
84 
Swap()85 		private void Swap ()
86 		{
87 			// Swap the selection paths, and whether the
88 			// selection path should be visible
89 			Document doc = PintaCore.Workspace.ActiveDocument;
90 
91 			DocumentSelection swap_selection = doc.Selection;
92 			doc.Selection = old_selection;
93 			old_selection = swap_selection;
94 		}
95 	}
96 }
97