Mercurial > hg > orthanc-stone
comparison Framework/Scene2DViewport/UndoStack.h @ 858:e3c56d4f863f
GuiAdapter : mouse event routing in SDL + split the undo stack from the
ViewportController for multi-canvas apps + adapted the samples to this change
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Mon, 24 Jun 2019 10:31:04 +0200 |
parents | |
children | ac88989817e3 |
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855:41d22389a7d2 | 858:e3c56d4f863f |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
6 * | |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU Affero General Public License | |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
11 * | |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 **/ | |
20 | |
21 #pragma once | |
22 | |
23 #include <boost/shared_ptr.hpp> | |
24 | |
25 #include <vector> | |
26 | |
27 namespace OrthancStone | |
28 { | |
29 class TrackerCommand; | |
30 | |
31 class UndoStack | |
32 { | |
33 public: | |
34 UndoStack(); | |
35 | |
36 /** | |
37 Stores a command : | |
38 - this first trims the undo stack to keep the first numAppliedCommands_ | |
39 - then it adds the supplied command at the top of the undo stack | |
40 | |
41 In other words, when a new command is pushed, all the undone (and not | |
42 redone) commands are removed. | |
43 */ | |
44 void PushCommand(boost::shared_ptr<TrackerCommand> command); | |
45 | |
46 /** | |
47 Undoes the command at the top of the undo stack, or throws if there is no | |
48 command to undo. | |
49 You can check "CanUndo" first to protect against extraneous redo. | |
50 */ | |
51 void Undo(); | |
52 | |
53 /** | |
54 Redoes the command that is just above the last applied command in the undo | |
55 stack or throws if there is no command to redo. | |
56 You can check "CanRedo" first to protect against extraneous redo. | |
57 */ | |
58 void Redo(); | |
59 | |
60 /** selfexpl */ | |
61 bool CanUndo() const; | |
62 | |
63 /** selfexpl */ | |
64 bool CanRedo() const; | |
65 | |
66 private: | |
67 std::vector<boost::shared_ptr<TrackerCommand> > commandStack_; | |
68 | |
69 /** | |
70 This is always between >= 0 and <= undoStack_.size() and gives the | |
71 position where the controller is in the undo stack. | |
72 - If numAppliedCommands_ > 0, one can undo | |
73 - If numAppliedCommands_ < numAppliedCommands_.size(), one can redo | |
74 */ | |
75 size_t numAppliedCommands_; | |
76 }; | |
77 } |