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comparison OrthancStone/Sources/Scene2DViewport/OneGesturePointerTracker.cpp @ 1512:244ad1e4e76a

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reorganization of folders
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 07 Jul 2020 16:21:02 +0200
parents Framework/Scene2DViewport/OneGesturePointerTracker.cpp@30deba7bc8e2
children 85e117739eca
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1511:9dfeee74c1e6 1512:244ad1e4e76a
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU Affero General Public License
9 * as published by the Free Software Foundation, either version 3 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Affero General Public License for more details.
16 *
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 **/
20
21
22 #include "OneGesturePointerTracker.h"
23
24 #include <OrthancException.h>
25
26 #include "../StoneException.h"
27
28 namespace OrthancStone
29 {
30 OneGesturePointerTracker::OneGesturePointerTracker(
31 boost::shared_ptr<IViewport> viewport)
32 : viewport_(viewport)
33 , alive_(true)
34 , currentTouchCount_(1)
35 {
36 }
37
38 void OneGesturePointerTracker::PointerUp(const PointerEvent& event)
39 {
40 // pointer up is only called for the LAST up event in case of a multi-touch
41 // gesture
42 ORTHANC_ASSERT(currentTouchCount_ > 0, "Wrong state in tracker");
43 currentTouchCount_--;
44 //LOG(TRACE) << "currentTouchCount_ becomes: " << currentTouchCount_;
45 if (currentTouchCount_ == 0)
46 {
47 //LOG(TRACE) << "currentTouchCount_ == 0 --> alive_ = false";
48 alive_ = false;
49 }
50 }
51
52 void OneGesturePointerTracker::PointerDown(const PointerEvent& event)
53 {
54 // additional touches are not taken into account but we need to count
55 // the number of active touches
56 currentTouchCount_++;
57 //LOG(TRACE) << "currentTouchCount_ becomes: " << currentTouchCount_;
58
59 /**
60 * 2019-12-06 (SJO): Patch to have consistent behavior when mouse
61 * leaves the canvas while the tracker is still active, then
62 * button is released while out-of-canvas. Such an event is not
63 * caught (at least in WebAssembly), so we delete the tracker on
64 * the next click inside the canvas.
65 **/
66 alive_ = false;
67 }
68
69 bool OneGesturePointerTracker::IsAlive() const
70 {
71 return alive_;
72 }
73 }