Mercurial > hg > orthanc-stone
annotate Framework/Scene2D/PanSceneTracker.cpp @ 1063:3e8f59cefec6 broker
integration mainline->broker
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 15 Oct 2019 12:22:44 +0200 |
parents | 13e078adfb94 |
children | 2d8ab34c8c91 |
rev | line source |
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596 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2019 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 "PanSceneTracker.h" | |
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23 #include "../Scene2DViewport/ViewportController.h" |
596 | 24 |
25 namespace OrthancStone | |
26 { | |
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27 PanSceneTracker::PanSceneTracker(boost::weak_ptr<ViewportController> controllerW, |
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28 const PointerEvent& event) |
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29 : OneGesturePointerTracker(controllerW) |
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30 , originalSceneToCanvas_(GetController()->GetSceneToCanvasTransform()) |
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31 , originalCanvasToScene_(GetController()->GetCanvasToSceneTransform()) |
596 | 32 { |
33 pivot_ = event.GetMainPosition().Apply(originalCanvasToScene_); | |
34 } | |
35 | |
36 | |
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37 void PanSceneTracker::PointerMove(const PointerEvent& event) |
596 | 38 { |
39 ScenePoint2D p = event.GetMainPosition().Apply(originalCanvasToScene_); | |
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40 |
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41 // The controller is a weak pointer. It could be deleted when the |
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42 // tracker is still alive (for instance, because of a lost WebGL |
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43 // context) |
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44 if(GetController().get() != NULL) |
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45 { |
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46 GetController()->SetSceneToCanvasTransform( |
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47 AffineTransform2D::Combine( |
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48 originalSceneToCanvas_, |
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49 AffineTransform2D::CreateOffset(p.GetX() - pivot_.GetX(), |
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50 p.GetY() - pivot_.GetY()))); |
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51 } |
596 | 52 } |
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53 |
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54 void PanSceneTracker::Cancel() |
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55 { |
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56 if(GetController().get() != NULL) |
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57 { |
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58 GetController()->SetSceneToCanvasTransform(originalSceneToCanvas_); |
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59 } |
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60 } |
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61 |
596 | 62 } |