Mercurial > hg > orthanc-stone
annotate Framework/Scene2DViewport/OneGesturePointerTracker.h @ 767:dce5b067d040
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 23 May 2019 16:57:33 +0200 |
parents | 28b9e3a54200 |
children | e42b491f1fb2 |
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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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24 |
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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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31 |
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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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37 |
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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(ViewportControllerWPtr 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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46 |
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47 protected: |
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48 ViewportControllerPtr GetController(); |
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49 |
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50 private: |
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51 ViewportControllerWPtr 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 |