Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2DViewport/ViewportController.h @ 2177:4d21befb1501 default tip
clarify DICOMweb version check
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 23 Oct 2024 19:27:56 +0200 |
parents | 7e8b918b0482 |
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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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2024 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 #pragma once |
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24 |
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25 #include "PredeclaredTypes.h" |
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26 |
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27 #include "../Messages/IObservable.h" |
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28 #include "../Scene2D/Scene2D.h" |
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29 #include "../Scene2DViewport/IFlexiblePointerTracker.h" |
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32 |
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33 #include <Compatibility.h> |
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34 |
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35 #include <boost/enable_shared_from_this.hpp> |
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36 #include <stack> |
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37 |
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38 namespace OrthancStone |
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39 { |
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40 class UndoStack; |
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41 |
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42 const double ARC_RADIUS_CANVAS_COORD = 30.0; |
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43 const double TEXT_CENTER_DISTANCE_CANVAS_COORD = 90; |
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44 |
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45 const double HANDLE_SIDE_LENGTH_CANVAS_COORD = 10.0; |
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46 const double HIT_TEST_MAX_DISTANCE_CANVAS_COORD = 15.0; |
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47 |
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48 const uint8_t TEXT_COLOR_RED = 0; |
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49 const uint8_t TEXT_COLOR_GREEN = 223; |
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50 const uint8_t TEXT_COLOR_BLUE = 81; |
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51 |
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52 const uint8_t TOOL_ANGLE_LINES_COLOR_RED = 0; |
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53 const uint8_t TOOL_ANGLE_LINES_COLOR_GREEN = 183; |
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54 const uint8_t TOOL_ANGLE_LINES_COLOR_BLUE = 17; |
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55 |
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56 const uint8_t TOOL_ANGLE_LINES_HL_COLOR_RED = 0; |
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57 const uint8_t TOOL_ANGLE_LINES_HL_COLOR_GREEN = 17; |
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58 const uint8_t TOOL_ANGLE_LINES_HL_COLOR_BLUE = 183; |
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59 |
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60 const uint8_t TOOL_LINES_COLOR_RED = 0; |
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61 const uint8_t TOOL_LINES_COLOR_GREEN = 223; |
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62 const uint8_t TOOL_LINES_COLOR_BLUE = 21; |
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63 |
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64 const uint8_t TOOL_LINES_HL_COLOR_RED = 0; |
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65 const uint8_t TOOL_LINES_HL_COLOR_GREEN = 21; |
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66 const uint8_t TOOL_LINES_HL_COLOR_BLUE = 223; |
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67 |
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68 const uint8_t TEXT_OUTLINE_COLOR_RED = 0; |
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69 const uint8_t TEXT_OUTLINE_COLOR_GREEN = 56; |
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70 const uint8_t TEXT_OUTLINE_COLOR_BLUE = 21; |
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71 |
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72 /** |
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73 This object is responsible for hosting a scene, responding to messages from |
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74 the model and updating the scene accordingly. |
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75 |
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76 It contains the list of active measuring tools as well as the stack |
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77 where measuring tool commands are stored. |
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78 |
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79 The active tracker is also stored in the viewport controller. |
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80 |
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81 Each canvas or other GUI area where we want to display a 2D image, either |
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82 directly or through slicing must be assigned a ViewportController. |
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83 */ |
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84 class ViewportController : |
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85 public IObservable, |
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86 public boost::enable_shared_from_this<ViewportController> |
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87 { |
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88 public: |
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89 ORTHANC_STONE_DEFINE_ORIGIN_MESSAGE(__FILE__, __LINE__, \ |
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90 SceneTransformChanged, \ |
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91 ViewportController); |
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92 |
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93 class GrayscaleWindowingChanged : public OriginMessage<ViewportController> |
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94 { |
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95 ORTHANC_STONE_MESSAGE(__FILE__, __LINE__); |
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96 |
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97 private: |
2170 | 98 Windowing windowing_; |
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99 |
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100 public: |
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101 GrayscaleWindowingChanged(const ViewportController& origin, |
2170 | 102 const Windowing& windowing) : |
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103 OriginMessage(origin), |
2170 | 104 windowing_(windowing) |
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105 { |
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106 } |
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107 |
2170 | 108 const Windowing& GetWindowing() const |
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109 { |
2170 | 110 return windowing_; |
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111 } |
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112 }; |
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113 |
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114 explicit ViewportController(boost::weak_ptr<IViewport> viewport); |
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115 |
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116 ~ViewportController(); |
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117 |
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118 /** |
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119 This method returns the list of measure tools containing the supplied point |
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120 (in scene coords). A tracker can then be requested from the chosen |
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121 measure tool, if needed |
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122 */ |
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123 std::vector<boost::shared_ptr<MeasureTool> > HitTestMeasureTools( |
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124 ScenePoint2D p); |
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125 |
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126 /** |
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127 This function will traverse the measuring tools and will clear their |
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128 highlighted state |
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129 */ |
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130 void ResetMeasuringToolsHighlight(); |
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131 |
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132 /** |
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133 With this method, the object takes ownership of the supplied tracker and |
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134 updates it according to user interaction |
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135 */ |
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136 void AcquireActiveTracker(const boost::shared_ptr<IFlexiblePointerTracker>& tracker) |
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137 { |
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138 activeTracker_ = tracker; |
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139 } |
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140 |
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141 /** Forwarded to the underlying scene */ |
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142 AffineTransform2D GetCanvasToSceneTransform() const; |
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143 |
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144 /** Forwarded to the underlying scene */ |
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145 AffineTransform2D GetSceneToCanvasTransform() const; |
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146 |
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147 /** Forwarded to the underlying scene, and broadcasted to the observers */ |
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148 void SetSceneToCanvasTransform(const AffineTransform2D& transform); |
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149 |
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150 /** Info broadcasted to the observers */ |
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152 |
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153 /** Forwarded to the underlying scene, and broadcasted to the observers */ |
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154 void FitContent(unsigned int viewportWidth, |
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155 unsigned int viewportHeight); |
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156 |
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157 /** Adds a new measure tool */ |
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158 void AddMeasureTool(boost::shared_ptr<MeasureTool> measureTool); |
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159 |
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160 /** Removes a measure tool or throws if it cannot be found */ |
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161 void RemoveMeasureTool(boost::shared_ptr<MeasureTool> measureTool); |
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162 |
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163 /** |
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164 The square handle side length in *scene* coordinates |
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165 */ |
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166 double GetHandleSideLengthS() const; |
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167 |
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168 /** |
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169 The angle measure too arc radius in *scene* coordinates |
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170 |
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171 Note: you might wonder why this is not part of the AngleMeasureTool itself, |
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172 but we prefer to put all such constants in the same location, to ease |
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173 */ |
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174 double GetAngleToolArcRadiusS() const; |
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175 |
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176 /** |
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177 The hit test maximum distance in *scene* coordinates. |
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178 If a pointer event is less than GetHandleSideLengthS() to a GUI element, |
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179 the hit test for this GUI element is seen as true |
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180 */ |
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181 double GetHitTestMaximumDistanceS() const; |
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182 |
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183 /** |
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184 Distance between the top of the angle measuring tool and the center of |
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185 the label showing the actual measure, in *scene* coordinates |
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186 */ |
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187 double GetAngleTopTextLabelDistanceS() const; |
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188 |
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189 |
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190 /** forwarded to the UndoStack */ |
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191 void PushCommand(boost::shared_ptr<MeasureCommand> command); |
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192 |
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193 /** forwarded to the UndoStack */ |
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194 void Undo(); |
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195 |
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196 /** forwarded to the UndoStack */ |
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197 void Redo(); |
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198 |
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199 /** forwarded to the UndoStack */ |
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200 bool CanUndo() const; |
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201 |
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202 /** forwarded to the UndoStack */ |
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203 bool CanRedo() const; |
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204 |
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205 |
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206 // Must be expressed in canvas coordinates |
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207 void HandleMousePress(IViewportInteractor& interactor, |
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208 const PointerEvent& event, |
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209 unsigned int viewportWidth, |
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210 unsigned int viewportHeight); |
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211 |
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212 // Must be expressed in canvas coordinates. Returns "true" if the |
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213 // state has changed, so that "Invalidate()" can be called. |
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214 bool HandleMouseMove(const PointerEvent& event); |
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215 |
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216 // Must be expressed in canvas coordinates |
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217 void HandleMouseRelease(const PointerEvent& event); |
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218 |
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219 const Scene2D& GetScene() const |
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220 { |
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221 return *scene_; |
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222 } |
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223 |
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224 Scene2D& GetScene() |
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225 { |
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226 return *scene_; |
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227 } |
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228 |
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229 /** |
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230 This method is used in a move pattern: when the ownership of the scene |
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231 managed by this viewport controller must be transferred to another |
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232 controller. |
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233 */ |
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234 Scene2D* ReleaseScene() |
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235 { |
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236 return scene_.release(); |
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237 } |
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238 |
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239 /** |
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240 This method is used when one wishes to replace the scene that is currently |
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241 managed by the controller. The previous scene is deleted and the controller |
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242 now has ownership of the new one. |
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243 */ |
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244 void AcquireScene(Scene2D* scene) |
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245 { |
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246 scene_.reset(scene); |
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247 } |
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248 |
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249 /** |
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250 Sets the undo stack that is used by PushCommand, Undo... |
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251 */ |
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252 void SetUndoStack(boost::weak_ptr<UndoStack> undoStackW) |
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253 { |
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254 undoStackW_ = undoStackW; |
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255 } |
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256 |
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257 bool HasActiveTracker() const |
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258 { |
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259 return activeTracker_.get() != NULL; |
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260 } |
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261 |
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262 private: |
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263 double GetCanvasToSceneFactor() const; |
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264 |
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265 // The scene can be used by the higher-level objects (including the |
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266 // measuring tools), possibly in their destructor, and so it must be |
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267 // deleted last (and, thus, constructed first) |
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268 std::unique_ptr<Scene2D> scene_; |
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269 |
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270 boost::weak_ptr<IViewport> viewport_; |
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271 |
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272 boost::weak_ptr<UndoStack> undoStackW_; // Global stack, possibly shared by all viewports |
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273 std::vector<boost::shared_ptr<MeasureTool> > measureTools_; |
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274 boost::shared_ptr<IFlexiblePointerTracker> activeTracker_; // TODO - Couldn't this be a "std::unique_ptr"? |
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275 |
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276 |
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277 // this is cached |
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278 double canvasToSceneFactor_; |
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279 }; |
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280 } |