Mercurial > hg > orthanc-stone

annotate Framework/Scene2DViewport/OneGesturePointerTracker.h @ 879:12b591d5d63c am-dev

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some Qt integration (wip)
author Alain Mazy <alain@mazy.be>
date Fri, 05 Jul 2019 14:52:43 +0200
parents e42b491f1fb2
children 2d8ab34c8c91
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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) 2017-2019 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 #pragma once
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22
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23 #include "IFlexiblePointerTracker.h"
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25 namespace OrthancStone
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26 {
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27 /**
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28 This base is class allows to write simple trackers that deal with single
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29 drag gestures with only one touch. It is *not* suitable for multi-touch and
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30 multi-state trackers where various mouse operations need to be handled.
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32 In order to write such a tracker:
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33 - subclass this class
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34 - you may store the initial click/touch position in the constructor
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35 - implement PointerMove to react to pointer/touch events
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36 - implement Cancel to restore the state at initial tracker creation time
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38 */
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39 class OneGesturePointerTracker : public IFlexiblePointerTracker
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40 {
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41 public:
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42 OneGesturePointerTracker(boost::weak_ptr<ViewportController> controllerW);
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43 virtual void PointerUp(const PointerEvent& event) ORTHANC_OVERRIDE;
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44 virtual void PointerDown(const PointerEvent& event) ORTHANC_OVERRIDE;
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45 virtual bool IsAlive() const ORTHANC_OVERRIDE;
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47 protected:
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48 boost::shared_ptr<ViewportController> GetController();
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50 private:
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51 boost::weak_ptr<ViewportController> controllerW_;
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52 bool alive_;
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53 int currentTouchCount_;
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54 };
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55 }
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56