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annotate OrthancStone/Sources/Scene2D/Internals/CompositorHelper.h @ 1871:7053b8a0aaec

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:18:48 +0100
parents 3889ae96d2e9
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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) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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23
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24 #pragma once
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25
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26 #include "../Scene2D.h"
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27 #include "../ScenePoint2D.h"
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28
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29 #include <Compatibility.h> // For ORTHANC_OVERRIDE
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30
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31 #include <boost/noncopyable.hpp>
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32 #include <map>
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33
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34 namespace OrthancStone
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35 {
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36 namespace Internals
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37 {
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38 class CompositorHelper : protected Scene2D::IVisitor
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39 {
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40 public:
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41 class ILayerRenderer : public boost::noncopyable
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42 {
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43 public:
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44 virtual ~ILayerRenderer()
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45 {
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46 }
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47
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48 virtual void Render(const AffineTransform2D& transform,
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49 unsigned int canvasWidth,
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50 unsigned int canvasHeight) = 0;
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51
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52 // "Update()" is only called if the type of the layer has not changed
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53 virtual void Update(const ISceneLayer& layer) = 0;
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54 };
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55
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56 class IRendererFactory : public boost::noncopyable
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57 {
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58 public:
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59 virtual ~IRendererFactory()
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60 {
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61 }
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62
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63 virtual ILayerRenderer* Create(const ISceneLayer& layer) = 0;
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64 };
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65
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66 private:
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67 class Item;
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68
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69 typedef std::map<int, Item*> Content;
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70
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71 IRendererFactory& factory_;
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72 Content content_;
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73 const Scene2D* lastScene_; // This is only a safeguard, don't use it!
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75 // Only valid during a call to Refresh()
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76 AffineTransform2D sceneTransform_;
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77 unsigned int canvasWidth_;
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78 unsigned int canvasHeight_;
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79
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80 protected:
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81 virtual void Visit(const Scene2D& scene,
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82 const ISceneLayer& layer,
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83 uint64_t layerIdentifier,
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84 int depth) ORTHANC_OVERRIDE;
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85
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86 public:
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87 explicit CompositorHelper(IRendererFactory& factory) :
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88 factory_(factory),
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89 lastScene_(NULL),
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90 canvasWidth_(0),
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91 canvasHeight_(0)
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92 {
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93 }
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95 ~CompositorHelper();
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96
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97 void Refresh(const Scene2D& scene,
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98 unsigned int canvasWidth,
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99 unsigned int canvasHeight);
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100 };
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101 }
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102 }