Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Scene2D/Scene2D.h @ 1993:317a53d4fdc6

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added magnifying glass
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 31 Oct 2022 22:19:57 +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) 2017-2022 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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22
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23
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24 #pragma once
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25
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26 #include "ISceneLayer.h"
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27 #include "../Toolbox/AffineTransform2D.h"
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28 #include "../Messages/IObservable.h"
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29 #include "../Messages/IMessage.h"
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30
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31 #include <map>
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32
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33 namespace OrthancStone
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34 {
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35 class Scene2D : public boost::noncopyable
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36 {
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37 public:
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38 class IVisitor : public boost::noncopyable
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39 {
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40 public:
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41 virtual ~IVisitor()
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42 {
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43 }
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44
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45 virtual void Visit(const Scene2D& scene,
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46 const ISceneLayer& layer,
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47 uint64_t layerIdentifier,
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48 int depth) = 0;
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49 };
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50
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51 private:
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52 class Item;
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53
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54 typedef std::map<int, Item*> Content;
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55
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56 Content content_;
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57 AffineTransform2D sceneToCanvas_;
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58 AffineTransform2D canvasToScene_;
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59 uint64_t layerCounter_;
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60
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61 Scene2D(const Scene2D& other);
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62
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63 void FitContent(const AffineTransform2D& forcedTransform,
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64 unsigned int canvasWidth,
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65 unsigned int canvasHeight);
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66
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67 public:
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68 Scene2D() : layerCounter_(0)
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69 {
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70 }
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71
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72 ~Scene2D();
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73
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74 Scene2D* Clone() const
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75 {
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76 return new Scene2D(*this);
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77 }
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78
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79 ISceneLayer& SetLayer(int depth,
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80 ISceneLayer* layer); // Takes ownership
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81
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82 /**
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83 Removes the layer at specified depth and deletes the underlying object
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84 */
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85 void DeleteLayer(int depth);
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86
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87 bool HasLayer(int depth) const;
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88
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89 ISceneLayer& GetLayer(int depth) const;
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91 /**
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92 Returns the minimum depth among all layers or 0 if there are no layers
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93 */
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94 int GetMinDepth() const;
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96 /**
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97 Returns the minimum depth among all layers or 0 if there are no layers
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98 */
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99 int GetMaxDepth() const;
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100
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101 /**
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102 Removes the layer at specified depth and transfers the object
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103 ownership to the caller
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104 */
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105 ISceneLayer* ReleaseLayer(int depth);
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106
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107 void Apply(IVisitor& visitor) const;
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108
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109 const AffineTransform2D& GetSceneToCanvasTransform() const
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110 {
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111 return sceneToCanvas_;
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112 }
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113
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114 const AffineTransform2D& GetCanvasToSceneTransform() const
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115 {
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116 return canvasToScene_;
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117 }
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118
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119 void SetSceneToCanvasTransform(const AffineTransform2D& transform);
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120
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121 void FitContent(unsigned int canvasWidth,
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122 unsigned int canvasHeight);
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123
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124 void GetBoundingBox(Extent2D& target) const;
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125
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126 void RotateViewport(double angle,
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127 unsigned int canvasWidth,
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128 unsigned int canvasHeight);
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129
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130 void FlipViewportX(unsigned int canvasWidth,
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131 unsigned int canvasHeight);
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132
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133 void FlipViewportY(unsigned int canvasWidth,
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134 unsigned int canvasHeight);
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135 };
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136 }