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annotate Framework/Radiography/RadiographyWindowingTracker.h @ 457:3b4df9925db6 am-touch-events

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added support for 'touch' in mouse trackers. This is still a bit hacky and we need to refactor it to make it clean. Thanks to that, Pan and zoom are available together with 2 touches
author Alain Mazy <alain@mazy.be>
date Thu, 24 Jan 2019 16:42:27 +0100
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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) 2017-2019 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 Affero 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 * Affero 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 Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #pragma once
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23
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24 #include "../Toolbox/UndoRedoStack.h"
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25 #include "../Widgets/IWorldSceneMouseTracker.h"
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26 #include "RadiographyScene.h"
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27
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28 namespace OrthancStone
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29 {
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30 class RadiographyWindowingTracker : public IWorldSceneMouseTracker
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31 {
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32 public:
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33 enum Action
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34 {
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35 Action_IncreaseWidth,
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36 Action_DecreaseWidth,
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37 Action_IncreaseCenter,
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38 Action_DecreaseCenter
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39 };
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40
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41 private:
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42 class UndoRedoCommand;
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43
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44 UndoRedoStack& undoRedoStack_;
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45 RadiographyScene& scene_;
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46 int clickX_;
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47 int clickY_;
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48 Action leftAction_;
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49 Action rightAction_;
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50 Action upAction_;
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51 Action downAction_;
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52 float strength_;
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53 float sourceCenter_;
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54 float sourceWidth_;
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55
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56 static void ComputeAxisEffect(int& deltaCenter,
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57 int& deltaWidth,
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58 int delta,
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59 Action actionNegative,
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60 Action actionPositive);
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61
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62 public:
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63 RadiographyWindowingTracker(UndoRedoStack& undoRedoStack,
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64 RadiographyScene& scene,
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65 int x,
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66 int y,
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67 Action leftAction,
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68 Action rightAction,
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69 Action upAction,
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70 Action downAction);
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71
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72 virtual bool HasRender() const
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73 {
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74 return false;
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75 }
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76
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77 virtual void Render(CairoContext& context,
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78 double zoom);
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79
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80 virtual void MouseUp();
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81
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82 virtual void MouseMove(int displayX,
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83 int displayY,
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84 double sceneX,
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85 double sceneY,
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86 const std::vector<Touch>& displayTouches,
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87 const std::vector<Touch>& sceneTouches);
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88 };
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89 }