Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Scene2DViewport/UndoStack.cpp @ 1870:3889ae96d2e9

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added copyright UCLouvain
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:04:09 +0100
parents 9ac2a65d4172
children 7053b8a0aaec
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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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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2021 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23 #include "UndoStack.h"
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24
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25 #include "MeasureCommands.h"
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26
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27 #include "../StoneException.h"
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28
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29 namespace OrthancStone
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30 {
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31 UndoStack::UndoStack() : numAppliedCommands_(0)
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32 {}
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33
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34 void UndoStack::PushCommand(boost::shared_ptr<MeasureCommand> command)
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35 {
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36 commandStack_.erase(
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37 commandStack_.begin() + numAppliedCommands_,
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38 commandStack_.end());
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39
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40 ORTHANC_ASSERT(std::find(commandStack_.begin(), commandStack_.end(), command)
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41 == commandStack_.end(), "Duplicate command");
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42 commandStack_.push_back(command);
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43 numAppliedCommands_++;
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44 }
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45
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46 void UndoStack::Undo()
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47 {
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48 ORTHANC_ASSERT(CanUndo(), "");
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49 commandStack_[numAppliedCommands_ - 1]->Undo();
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50 numAppliedCommands_--;
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51 }
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52
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53 void UndoStack::Redo()
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54 {
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55 ORTHANC_ASSERT(CanRedo(), "");
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56 commandStack_[numAppliedCommands_]->Redo();
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57 numAppliedCommands_++;
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58 }
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59
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60 bool UndoStack::CanUndo() const
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61 {
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62 return numAppliedCommands_ > 0;
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63 }
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64
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65 bool UndoStack::CanRedo() const
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66 {
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67 return numAppliedCommands_ < commandStack_.size();
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68 }
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69
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70 }