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annotate OrthancStone/Sources/Scene2DViewport/UndoStack.cpp @ 1598:8563ea5d8ae4

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relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 26 Oct 2020 20:49:28 +0100
parents 4fb8fdf03314
children 9ac2a65d4172
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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2d8ab34c8c91 upgrade to year 2020
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22 #include "UndoStack.h"
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23
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24 #include "MeasureCommands.h"
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25
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26 #include "../StoneException.h"
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27
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28 namespace OrthancStone
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29 {
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30 UndoStack::UndoStack() : numAppliedCommands_(0)
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31 {}
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32
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33 void UndoStack::PushCommand(boost::shared_ptr<MeasureCommand> command)
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34 {
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35 commandStack_.erase(
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36 commandStack_.begin() + numAppliedCommands_,
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37 commandStack_.end());
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38
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39 ORTHANC_ASSERT(std::find(commandStack_.begin(), commandStack_.end(), command)
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40 == commandStack_.end(), "Duplicate command");
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41 commandStack_.push_back(command);
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42 numAppliedCommands_++;
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43 }
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44
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45 void UndoStack::Undo()
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46 {
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47 ORTHANC_ASSERT(CanUndo(), "");
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48 commandStack_[numAppliedCommands_ - 1]->Undo();
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49 numAppliedCommands_--;
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50 }
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51
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52 void UndoStack::Redo()
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53 {
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54 ORTHANC_ASSERT(CanRedo(), "");
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55 commandStack_[numAppliedCommands_]->Redo();
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56 numAppliedCommands_++;
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57 }
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58
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59 bool UndoStack::CanUndo() const
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60 {
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61 return numAppliedCommands_ > 0;
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62 }
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63
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64 bool UndoStack::CanRedo() const
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65 {
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66 return numAppliedCommands_ < commandStack_.size();
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67 }
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68
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69 }