Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2DViewport/OneGesturePointerTracker.h @ 1791:9b650ab68d4c
replaced unneeded use of boost::share_ptr for MeasureCommand mementos by std::unique_ptr
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 17 May 2021 16:11:17 +0200 |
parents | 9ac2a65d4172 |
children | 3889ae96d2e9 |
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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 * |
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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 #pragma once |
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23 |
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24 #include "IFlexiblePointerTracker.h" |
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25 |
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26 #include "../Viewport/IViewport.h" |
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27 |
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28 #include <Compatibility.h> // For ORTHANC_OVERRIDE |
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29 |
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30 #include <boost/shared_ptr.hpp> |
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31 #include <boost/weak_ptr.hpp> |
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32 |
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33 namespace OrthancStone |
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34 { |
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35 /** |
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36 This base is class allows to write simple trackers that deal with single |
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37 drag gestures with only one touch. It is *not* suitable for multi-touch and |
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38 multi-state trackers where various mouse operations need to be handled. |
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39 |
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40 In order to write such a tracker: |
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41 - subclass this class |
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42 - you may store the initial click/touch position in the constructor |
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43 - implement PointerMove to react to pointer/touch events |
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44 - implement Cancel to restore the state at initial tracker creation time |
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45 |
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46 */ |
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47 class OneGesturePointerTracker : public IFlexiblePointerTracker |
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48 { |
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50 bool alive_; | |
51 int currentTouchCount_; | |
52 | |
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53 protected: |
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54 boost::weak_ptr<IViewport> viewport_; |
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55 |
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56 /** |
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57 This will return a scoped lock to the viewport. |
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58 If the viewport does not exist anymore, then nullptr is returned. |
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59 */ |
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60 IViewport::ILock* GetViewportLock(); |
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61 |
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63 explicit OneGesturePointerTracker(boost::weak_ptr<IViewport> viewport); |
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65 virtual void PointerUp(const PointerEvent& event) ORTHANC_OVERRIDE; | |
66 | |
67 virtual void PointerDown(const PointerEvent& event) ORTHANC_OVERRIDE; | |
68 | |
69 virtual bool IsAlive() const ORTHANC_OVERRIDE; | |
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70 }; |
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71 } |
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72 |