Mercurial > hg > orthanc-stone

annotate Framework/Scene2DViewport/OneGesturePointerTracker.cpp @ 1279:7ec8fea061b9 broker

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integration mainline->broker
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 04 Feb 2020 15:20:08 +0100
parents 0ca50d275b9a 2d8ab34c8c91
children a5326ce4f24b
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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) 2017-2020 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 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 #include "OneGesturePointerTracker.h"
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23
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24 #include <Core/OrthancException.h>
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25
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26 #include "../StoneException.h"
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28 namespace OrthancStone
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29 {
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30 OneGesturePointerTracker::OneGesturePointerTracker(
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31 boost::weak_ptr<ViewportController> controllerW)
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32 : controllerW_(controllerW)
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33 , alive_(true)
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34 , currentTouchCount_(1)
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35 {
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36 }
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38 void OneGesturePointerTracker::PointerUp(const PointerEvent& event)
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39 {
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40 // pointer up is only called for the LAST up event in case of a multi-touch
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41 // gesture
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42 ORTHANC_ASSERT(currentTouchCount_ > 0, "Wrong state in tracker");
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43 currentTouchCount_--;
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44 LOG(INFO) << "currentTouchCount_ becomes: " << currentTouchCount_;
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45 if (currentTouchCount_ == 0)
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46 {
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47 LOG(INFO) << "currentTouchCount_ == 0 --> alive_ = false";
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48 alive_ = false;
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49 }
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50 }
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52 void OneGesturePointerTracker::PointerDown(const PointerEvent& event)
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53 {
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54 // additional touches are not taken into account but we need to count
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55 // the number of active touches
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56 currentTouchCount_++;
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57 LOG(INFO) << "currentTouchCount_ becomes: " << currentTouchCount_;
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59 /**
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60 * 2019-12-06 (SJO): Patch to have consistent behavior when mouse
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61 * leaves the canvas while the tracker is still active, then
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62 * button is released while out-of-canvas. Such an event is not
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63 * catched (at least in WebAssembly), so we delete the tracker on
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64 * the next click inside the canvas.
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65 **/
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66 alive_ = false;
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67 }
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69 bool OneGesturePointerTracker::IsAlive() const
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70 {
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71 return alive_;
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72 }
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73
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74 boost::shared_ptr<ViewportController> OneGesturePointerTracker::GetController()
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75 {
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76 return controllerW_.lock();
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77 }
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78 }