Mercurial > hg > orthanc-stone
annotate Framework/Scene2DViewport/MeasureTool.h @ 1303:83af7e562b45 broker
IGeometryProvider interface for deprecated loaders (required for AB testing in older app)
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Wed, 04 Mar 2020 09:44:09 +0100 |
parents | 7ec8fea061b9 |
children | a5326ce4f24b |
rev | line source |
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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) 2017-2020 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 "../Messages/ObserverBase.h" |
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24 #include "../Scene2D/PolylineSceneLayer.h" |
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25 #include "../Scene2D/Scene2D.h" |
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26 #include "../Scene2D/ScenePoint2D.h" |
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27 #include "../Scene2D/TextSceneLayer.h" |
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28 #include "../Scene2DViewport/PredeclaredTypes.h" |
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29 #include "../Scene2DViewport/ViewportController.h" |
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30 |
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31 #include <boost/weak_ptr.hpp> |
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32 |
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33 #include <vector> |
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34 #include <cmath> |
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35 |
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36 namespace OrthancStone |
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37 { |
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38 class IFlexiblePointerTracker; |
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39 class MeasureToolMemento; |
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40 |
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41 class MeasureTool : public ObserverBase<MeasureTool> |
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42 { |
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43 public: |
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44 virtual ~MeasureTool() |
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45 { |
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46 } |
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47 |
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48 /** |
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49 Enabled tools are rendered in the scene. |
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50 */ |
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51 void Enable(); |
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52 |
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53 /** |
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54 Disabled tools are not rendered in the scene. This is useful to be able |
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55 to use them as their own memento in command stacks (when a measure tool |
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56 creation command has been undone, the measure remains alive in the |
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57 command object but is disabled so that it can be redone later on easily) |
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58 */ |
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59 void Disable(); |
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60 |
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61 /** |
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62 This method is called when the scene transform changes. It allows to |
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63 recompute the visual elements whose content depend upon the scene transform |
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64 */ |
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65 void OnSceneTransformChanged( |
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66 const ViewportController::SceneTransformChanged& message); |
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67 |
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68 /** |
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69 This function must be implemented by the measuring tool to return whether |
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70 a given point in scene coords is close to the measuring tool. |
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71 |
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72 This is used for mouse hover highlighting. |
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73 |
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74 It is assumed that if the pointer position leads to this function returning |
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75 true, then a click at that position will return a tracker to edit the |
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76 measuring tool |
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77 */ |
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78 virtual bool HitTest(ScenePoint2D p) const = 0; |
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79 |
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80 /** |
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81 This method must return a memento the captures the tool state (not including |
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82 the highlighting state |
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83 */ |
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84 virtual boost::shared_ptr<MeasureToolMemento> GetMemento() const = 0; |
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85 |
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86 /** |
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87 This method must apply the supplied memento (this requires RTTI to check |
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88 the type) |
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89 */ |
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90 virtual void SetMemento(boost::shared_ptr<MeasureToolMemento>) = 0; |
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91 |
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92 /** |
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93 This must create an edition tracker suitable for the supplied click position, |
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94 or an empty pointer if no hit test (although this should have been checked |
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95 first) |
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96 */ |
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97 virtual boost::shared_ptr<IFlexiblePointerTracker> CreateEditionTracker(const PointerEvent& e) = 0; |
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98 |
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99 /** |
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100 Will change the measuring tool to provide visual feedback on the GUI |
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101 element that is in the pointer hit zone |
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102 */ |
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103 virtual void Highlight(ScenePoint2D p) = 0; |
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104 |
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105 /** |
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106 This function must reset the visual highlighted hot zone feedback |
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107 */ |
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108 virtual void ResetHighlightState() = 0; |
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109 |
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110 /** |
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111 A description of the measuring tool, useful in debug logs |
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112 */ |
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113 virtual std::string GetDescription() = 0; |
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114 |
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115 protected: |
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116 MeasureTool(boost::weak_ptr<ViewportController> controllerW); |
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117 |
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118 /** |
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119 The measuring tool may exist in a standalone fashion, without any available |
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120 scene (because the controller is dead or dying). This call allows to check |
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121 before accessing the scene. |
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122 */ |
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123 bool IsSceneAlive() const; |
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124 |
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125 /** |
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126 This is the meat of the tool: this method must [create (if needed) and] |
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127 update the layers and their data according to the measure tool kind and |
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128 current state. This is repeatedly called during user interaction |
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129 */ |
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130 virtual void RefreshScene() = 0; |
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131 |
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132 boost::shared_ptr<const ViewportController> GetController() const; |
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133 boost::shared_ptr<ViewportController> GetController(); |
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134 |
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135 /** |
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136 enabled_ is not accessible by subclasses because there is a state machine |
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137 that we do not wanna mess with |
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138 */ |
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139 bool IsEnabled() const; |
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140 |
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141 private: |
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142 boost::weak_ptr<ViewportController> controllerW_; |
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143 bool enabled_; |
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144 }; |
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145 |
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146 class MeasureToolMemento |
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147 { |
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148 public: |
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149 virtual ~MeasureToolMemento() {}; |
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150 }; |
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151 |
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152 } |
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153 |
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154 //extern void TrackerSample_SetInfoDisplayMessage( |
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155 // std::string key, std::string value); |