Mercurial > hg > orthanc-stone

annotate Framework/Scene2DViewport/ViewportController.h @ 1214:741201eab130 broker

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removing pointer to viewport from ViewportController
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 04 Dec 2019 19:12:08 +0100
parents 86a8266b8888
children 9efa66d8d3f8
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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 "PredeclaredTypes.h"
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24
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25 #include "../Viewport/IViewport.h"
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26 #include "../Scene2DViewport/IFlexiblePointerTracker.h"
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28 #include <boost/enable_shared_from_this.hpp>
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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 // TODO - Move this to another file
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34 class IViewportInteractor : public boost::noncopyable
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35 {
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36 public:
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37 virtual ~IViewportInteractor()
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38 {
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39 }
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40
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41 virtual IFlexiblePointerTracker* CreateTracker(boost::shared_ptr<ViewportController> controller,
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42 IViewport& viewport,
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43 const PointerEvent& event) = 0;
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44 };
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45
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46
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47 // TODO - Move this to another file
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48 class DefaultViewportInteractor : public IViewportInteractor
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49 {
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50 public:
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51 virtual IFlexiblePointerTracker* CreateTracker(boost::shared_ptr<ViewportController> controller,
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52 IViewport& viewport,
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53 const PointerEvent& event) ORTHANC_OVERRIDE;
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54 };
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55
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56
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57 class UndoStack;
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58
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59 const double ARC_RADIUS_CANVAS_COORD = 30.0;
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60 const double TEXT_CENTER_DISTANCE_CANVAS_COORD = 90;
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61
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62 const double HANDLE_SIDE_LENGTH_CANVAS_COORD = 10.0;
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63 const double HIT_TEST_MAX_DISTANCE_CANVAS_COORD = 15.0;
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64
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65 const uint8_t TEXT_COLOR_RED = 0;
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66 const uint8_t TEXT_COLOR_GREEN = 223;
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67 const uint8_t TEXT_COLOR_BLUE = 81;
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68
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69 const uint8_t TOOL_ANGLE_LINES_COLOR_RED = 0;
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70 const uint8_t TOOL_ANGLE_LINES_COLOR_GREEN = 183;
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71 const uint8_t TOOL_ANGLE_LINES_COLOR_BLUE = 17;
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72
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73 const uint8_t TOOL_ANGLE_LINES_HL_COLOR_RED = 0;
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74 const uint8_t TOOL_ANGLE_LINES_HL_COLOR_GREEN = 17;
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75 const uint8_t TOOL_ANGLE_LINES_HL_COLOR_BLUE = 183;
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76
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77 const uint8_t TOOL_LINES_COLOR_RED = 0;
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78 const uint8_t TOOL_LINES_COLOR_GREEN = 223;
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79 const uint8_t TOOL_LINES_COLOR_BLUE = 21;
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80
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81 const uint8_t TOOL_LINES_HL_COLOR_RED = 0;
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82 const uint8_t TOOL_LINES_HL_COLOR_GREEN = 21;
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83 const uint8_t TOOL_LINES_HL_COLOR_BLUE = 223;
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85 const uint8_t TEXT_OUTLINE_COLOR_RED = 0;
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86 const uint8_t TEXT_OUTLINE_COLOR_GREEN = 56;
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87 const uint8_t TEXT_OUTLINE_COLOR_BLUE = 21;
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88
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89 /**
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90 This object is responsible for hosting a scene, responding to messages from
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91 the model and updating the scene accordingly.
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92
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93 It contains the list of active measuring tools as well as the stack
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94 where measuring tool commands are stored.
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95
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96 The active tracker is also stored in the viewport controller.
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97
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98 Each canvas or other GUI area where we want to display a 2D image, either
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99 directly or through slicing must be assigned a ViewportController.
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100 */
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101 class ViewportController :
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102 public IObservable,
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103 public boost::enable_shared_from_this<ViewportController>
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104 {
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105 public:
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106 ORTHANC_STONE_DEFINE_ORIGIN_MESSAGE(__FILE__, __LINE__, \
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107 SceneTransformChanged, ViewportController);
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108
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109 ViewportController(boost::weak_ptr<UndoStack> undoStackW);
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110
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111 ~ViewportController();
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112
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113 /**
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114 This method returns the list of measure tools containing the supplied point
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115 (in scene coords). A tracker can then be requested from the chosen
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116 measure tool, if needed
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117 */
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118 std::vector<boost::shared_ptr<MeasureTool> > HitTestMeasureTools(ScenePoint2D p);
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119
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120 /**
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121 This function will traverse the measuring tools and will clear their
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122 highlighted state
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123 */
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124 void ResetMeasuringToolsHighlight();
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125
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126 /**
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127 With this method, the object takes ownership of the supplied tracker and
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128 updates it according to user interaction
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129 */
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130 void AcquireActiveTracker(IFlexiblePointerTracker* tracker);
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131
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132 /** Forwarded to the underlying scene */
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133 AffineTransform2D GetCanvasToSceneTransform() const;
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134
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135 /** Forwarded to the underlying scene */
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136 AffineTransform2D GetSceneToCanvasTransform() const;
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137
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138 /** Forwarded to the underlying scene, and broadcasted to the observers */
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139 void SetSceneToCanvasTransform(const AffineTransform2D& transform);
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140
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141 /** Forwarded to the underlying scene, and broadcasted to the observers */
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142 void FitContent(IViewport& viewport);
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143
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144 /** Adds a new measure tool */
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145 void AddMeasureTool(boost::shared_ptr<MeasureTool> measureTool);
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146
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147 /** Removes a measure tool or throws if it cannot be found */
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148 void RemoveMeasureTool(boost::shared_ptr<MeasureTool> measureTool);
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149
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150 /**
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151 The square handle side length in *scene* coordinates
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152 */
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153 double GetHandleSideLengthS() const;
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154
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155 /**
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156 The angle measure too arc radius in *scene* coordinates
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157
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158 Note: you might wonder why this is not part of the AngleMeasureTool itself,
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159 but we prefer to put all such constants in the same location, to ease
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160 */
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161 double GetAngleToolArcRadiusS() const;
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162
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163 /**
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164 The hit test maximum distance in *scene* coordinates.
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165 If a pointer event is less than GetHandleSideLengthS() to a GUI element,
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166 the hit test for this GUI element is seen as true
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167 */
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168 double GetHitTestMaximumDistanceS() const;
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169
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170 /**
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171 Distance between the top of the angle measuring tool and the center of
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172 the label showing the actual measure, in *scene* coordinates
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173 */
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174 double GetAngleTopTextLabelDistanceS() const;
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175
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176
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177 /** forwarded to the UndoStack */
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178 void PushCommand(boost::shared_ptr<MeasureCommand> command);
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179
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180 /** forwarded to the UndoStack */
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181 void Undo();
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182
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183 /** forwarded to the UndoStack */
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184 void Redo();
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185
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186 /** forwarded to the UndoStack */
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187 bool CanUndo() const;
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188
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189 /** forwarded to the UndoStack */
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190 bool CanRedo() const;
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191
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192
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193 // Must be expressed in canvas coordinates
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194 void HandleMousePress(IViewport& viewport,
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195 IViewportInteractor& interactor,
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196 const PointerEvent& event);
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197
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198 // Must be expressed in canvas coordinates
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199 void HandleMouseMove(const PointerEvent& event);
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200
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201 // Must be expressed in canvas coordinates
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202 void HandleMouseRelease(const PointerEvent& event);
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203
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204 const Scene2D& GetScene() const
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205 {
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206 return scene_;
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207 }
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208
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209 Scene2D& GetScene()
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210 {
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211 return scene_;
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212 }
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213
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214 private:
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215 double GetCanvasToSceneFactor() const;
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216
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217 boost::weak_ptr<UndoStack> undoStackW_; // Global stack, possibly shared by all viewports
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218 std::vector<boost::shared_ptr<MeasureTool> > measureTools_;
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219 boost::shared_ptr<IFlexiblePointerTracker> activeTracker_; // TODO - Couldn't this be a "std::auto_ptr"?
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220
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221 Scene2D scene_;
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222
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223 // this is cached
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224 double canvasToSceneFactor_;
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225 };
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226 }