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annotate OrthancStone/Sources/Scene2D/ZoomSceneTracker.h @ 1739:9ac2a65d4172

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 06 Jan 2021 17:50:00 +0100
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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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23 #pragma once
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26 #include "../Scene2DViewport/OneGesturePointerTracker.h"
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27 #include "../Viewport/IViewport.h"
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28 #include "Internals/FixedPointAligner.h"
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30 #include <boost/weak_ptr.hpp>
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32 namespace OrthancStone
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33 {
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34 class ZoomSceneTracker : public OneGesturePointerTracker
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35 {
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36 public:
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37 ZoomSceneTracker(boost::weak_ptr<IViewport> viewport,
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38 const PointerEvent& event,
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39 unsigned int canvasHeight);
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41 virtual void PointerMove(const PointerEvent& event) ORTHANC_OVERRIDE;
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42 virtual void Cancel() ORTHANC_OVERRIDE;
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44 private:
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45 double clickY_;
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46 bool active_;
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47 double normalization_;
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48 Internals::FixedPointAligner aligner_;
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49 AffineTransform2D originalSceneToCanvas_;
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51 };
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52 }