Mercurial > hg > orthanc-stone
annotate Framework/Scene2DViewport/ViewportController.h @ 819:a68cd7ae8838
fix
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 29 May 2019 13:39:31 +0200 |
parents | 66ac7a2d1e3a |
children | e42b491f1fb2 |
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) 2017-2019 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 "PointerTypes.h" |
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24 |
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25 #include "../Scene2D/Scene2D.h" |
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26 #include "../Scene2D/PointerEvent.h" |
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27 #include "../Scene2DViewport/IFlexiblePointerTracker.h" |
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28 |
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29 #include <stack> |
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30 |
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31 namespace OrthancStone |
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32 { |
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33 /** |
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34 These constats are used |
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35 |
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36 */ |
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37 const double ARC_RADIUS_CANVAS_COORD = 30.0; |
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38 const double TEXT_CENTER_DISTANCE_CANVAS_COORD = 90; |
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39 |
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40 const double HANDLE_SIDE_LENGTH_CANVAS_COORD = 10.0; |
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41 const double HIT_TEST_MAX_DISTANCE_CANVAS_COORD = 15.0; |
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42 |
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43 const uint8_t TEXT_COLOR_RED = 0; |
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44 const uint8_t TEXT_COLOR_GREEN = 223; |
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45 const uint8_t TEXT_COLOR_BLUE = 81; |
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46 |
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47 const uint8_t TOOL_LINES_COLOR_RED = 0; |
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48 const uint8_t TOOL_LINES_COLOR_GREEN = 223; |
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49 const uint8_t TOOL_LINES_COLOR_BLUE = 21; |
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50 |
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51 |
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52 const uint8_t TEXT_OUTLINE_COLOR_RED = 0; |
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53 const uint8_t TEXT_OUTLINE_COLOR_GREEN = 56; |
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54 const uint8_t TEXT_OUTLINE_COLOR_BLUE = 21; |
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55 |
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56 /** |
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57 This object is responsible for hosting a scene, responding to messages from |
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58 the model and updating the scene accordingly. |
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59 |
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60 It contains the list of active measuring tools as well as the stack |
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61 where measuring tool commands are stored. |
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62 |
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63 The active tracker is also stored in the viewport controller. |
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64 |
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65 Each canvas or other GUI area where we want to display a 2D image, either |
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66 directly or through slicing must be assigned a ViewportController. |
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67 */ |
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68 class ViewportController : public IObservable |
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69 { |
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70 public: |
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71 ORTHANC_STONE_DEFINE_ORIGIN_MESSAGE(__FILE__, __LINE__, \ |
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72 SceneTransformChanged, ViewportController); |
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73 |
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74 ViewportController(MessageBroker& broker); |
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75 |
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76 Scene2DConstPtr GetScene() const; |
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77 Scene2DPtr GetScene(); |
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78 |
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79 /** |
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80 This method is called by the GUI system and should update/delete the |
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81 current tracker |
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82 */ |
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83 bool HandlePointerEvent(PointerEvent e); |
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84 |
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85 /** |
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86 This method returns the list of measure tools containing the supplied point |
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87 (in scene coords). A tracker can then be requested from the chosen |
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88 measure tool, if needed |
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89 */ |
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90 std::vector<MeasureToolPtr> HitTestMeasureTools(ScenePoint2D p); |
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91 |
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92 /** |
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93 With this method, the object takes ownership of the supplied tracker and |
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94 updates it according to user interaction |
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95 */ |
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96 void SetActiveTracker(FlexiblePointerTrackerPtr tracker); |
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97 |
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98 /** Forwarded to the underlying scene */ |
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99 const AffineTransform2D& GetCanvasToSceneTransform() const; |
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100 |
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101 /** Forwarded to the underlying scene */ |
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102 const AffineTransform2D& GetSceneToCanvasTransform() const; |
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103 |
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104 /** Forwarded to the underlying scene, and broadcasted to the observers */ |
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105 void SetSceneToCanvasTransform(const AffineTransform2D& transform); |
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106 |
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107 /** Forwarded to the underlying scene, and broadcasted to the observers */ |
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108 void FitContent(unsigned int canvasWidth, unsigned int canvasHeight); |
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109 |
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110 /** |
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111 Stores a command : |
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112 - this first trims the undo stack to keep the first numAppliedCommands_ |
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113 - then it adds the supplied command at the top of the undo stack |
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114 |
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115 In other words, when a new command is pushed, all the undone (and not |
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116 redone) commands are removed. |
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117 */ |
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118 void PushCommand(TrackerCommandPtr command); |
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119 |
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120 /** |
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121 Undoes the command at the top of the undo stack, or throws if there is no |
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122 command to undo. |
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123 You can check "CanUndo" first to protect against extraneous redo. |
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124 */ |
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125 void Undo(); |
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126 |
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127 /** |
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128 Redoes the command that is just above the last applied command in the undo |
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129 stack or throws if there is no command to redo. |
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130 You can check "CanRedo" first to protect against extraneous redo. |
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131 */ |
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132 void Redo(); |
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133 |
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134 /** selfexpl */ |
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135 bool CanUndo() const; |
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136 |
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137 /** selfexpl */ |
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138 bool CanRedo() const; |
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139 |
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140 /** Adds a new measure tool */ |
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141 void AddMeasureTool(MeasureToolPtr measureTool); |
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142 |
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143 /** Removes a measure tool or throws if it cannot be found */ |
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144 void RemoveMeasureTool(MeasureToolPtr measureTool); |
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145 |
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146 /** |
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147 The square handle side length in *scene* coordinates |
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148 */ |
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149 double GetHandleSideLengthS() const; |
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150 |
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151 /** |
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152 The angle measure too arc radius in *scene* coordinates |
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153 |
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154 Note: you might wonder why this is not part of the AngleMeasureTool itself, |
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155 but we prefer to put all such constants in the same location, to ease |
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156 */ |
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157 double GetAngleToolArcRadiusS() const; |
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158 |
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159 /** |
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160 The hit test maximum distance in *scene* coordinates. |
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161 If a pointer event is less than GetHandleSideLengthS() to a GUI element, |
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162 the hit test for this GUI element is seen as true |
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163 */ |
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164 double GetHitTestMaximumDistanceS() const; |
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165 |
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166 /** |
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167 Distance between the top of the angle measuring tool and the center of |
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168 the label showing the actual measure, in *scene* coordinates |
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169 */ |
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170 double GetAngleTopTextLabelDistanceS() const; |
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171 |
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172 private: |
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173 double GetCanvasToSceneFactor() const; |
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174 |
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175 std::vector<TrackerCommandPtr> commandStack_; |
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176 |
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177 /** |
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178 This is always between >= 0 and <= undoStack_.size() and gives the |
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179 position where the controller is in the undo stack. |
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180 - If numAppliedCommands_ > 0, one can undo |
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181 - If numAppliedCommands_ < numAppliedCommands_.size(), one can redo |
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182 */ |
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183 size_t numAppliedCommands_; |
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184 std::vector<MeasureToolPtr> measureTools_; |
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185 Scene2DPtr scene_; |
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186 FlexiblePointerTrackerPtr tracker_; |
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187 |
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188 // this is cached |
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189 mutable double canvasToSceneFactor_; |
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190 }; |
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191 } |