Mercurial > hg > orthanc-stone
annotate Framework/Scene2D/PanSceneTracker.cpp @ 1140:6333e6f7248e broker
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 07 Nov 2019 16:53:15 +0100 |
| 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 } |