Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2DViewport/ViewportController.h @ 1606:874e178f34e9
- ViewportController now has weak ptr to Viewport
- Measuring tools + related commands and all trackers now store only a weak_ptr to the Viewport and lock() on demand for usage
- LayerHolder and FixedPoint aligner store only a weak_ptr to the Viewport, too
- Fixed float/double warning in GrayscaleWindowingSceneTracker
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Wed, 28 Oct 2020 20:14:34 +0100 |
parents | 8563ea5d8ae4 |
children | fb62c1522193 |
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 Lesser 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 * Lesser 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 Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
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20 **/ |
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21 |
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22 #pragma once |
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23 |
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24 #include "PredeclaredTypes.h" |
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25 |
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26 #include "../Messages/IObservable.h" |
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27 #include "../Scene2D/Scene2D.h" |
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28 #include "../Scene2DViewport/IFlexiblePointerTracker.h" |
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30 |
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31 #include <Compatibility.h> |
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32 |
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33 #include <boost/enable_shared_from_this.hpp> |
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34 #include <stack> |
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35 |
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36 namespace OrthancStone |
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37 { |
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38 class UndoStack; |
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39 |
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40 const double ARC_RADIUS_CANVAS_COORD = 30.0; |
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41 const double TEXT_CENTER_DISTANCE_CANVAS_COORD = 90; |
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42 |
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43 const double HANDLE_SIDE_LENGTH_CANVAS_COORD = 10.0; |
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44 const double HIT_TEST_MAX_DISTANCE_CANVAS_COORD = 15.0; |
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45 |
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46 const uint8_t TEXT_COLOR_RED = 0; |
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47 const uint8_t TEXT_COLOR_GREEN = 223; |
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48 const uint8_t TEXT_COLOR_BLUE = 81; |
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49 |
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50 const uint8_t TOOL_ANGLE_LINES_COLOR_RED = 0; |
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51 const uint8_t TOOL_ANGLE_LINES_COLOR_GREEN = 183; |
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52 const uint8_t TOOL_ANGLE_LINES_COLOR_BLUE = 17; |
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53 |
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54 const uint8_t TOOL_ANGLE_LINES_HL_COLOR_RED = 0; |
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55 const uint8_t TOOL_ANGLE_LINES_HL_COLOR_GREEN = 17; |
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56 const uint8_t TOOL_ANGLE_LINES_HL_COLOR_BLUE = 183; |
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57 |
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58 const uint8_t TOOL_LINES_COLOR_RED = 0; |
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59 const uint8_t TOOL_LINES_COLOR_GREEN = 223; |
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60 const uint8_t TOOL_LINES_COLOR_BLUE = 21; |
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61 |
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62 const uint8_t TOOL_LINES_HL_COLOR_RED = 0; |
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63 const uint8_t TOOL_LINES_HL_COLOR_GREEN = 21; |
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64 const uint8_t TOOL_LINES_HL_COLOR_BLUE = 223; |
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65 |
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66 const uint8_t TEXT_OUTLINE_COLOR_RED = 0; |
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67 const uint8_t TEXT_OUTLINE_COLOR_GREEN = 56; |
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68 const uint8_t TEXT_OUTLINE_COLOR_BLUE = 21; |
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69 |
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70 /** |
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71 This object is responsible for hosting a scene, responding to messages from |
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72 the model and updating the scene accordingly. |
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73 |
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74 It contains the list of active measuring tools as well as the stack |
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75 where measuring tool commands are stored. |
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76 |
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77 The active tracker is also stored in the viewport controller. |
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78 |
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79 Each canvas or other GUI area where we want to display a 2D image, either |
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80 directly or through slicing must be assigned a ViewportController. |
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81 */ |
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82 class ViewportController : |
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83 public IObservable, |
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84 public boost::enable_shared_from_this<ViewportController> |
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85 { |
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86 public: |
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87 ORTHANC_STONE_DEFINE_ORIGIN_MESSAGE(__FILE__, __LINE__, \ |
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88 SceneTransformChanged, \ |
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89 ViewportController); |
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90 |
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91 explicit ViewportController(boost::weak_ptr<IViewport> viewport); |
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92 |
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93 ~ViewportController(); |
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94 |
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95 /** |
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96 This method returns the list of measure tools containing the supplied point |
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97 (in scene coords). A tracker can then be requested from the chosen |
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98 measure tool, if needed |
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99 */ |
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100 std::vector<boost::shared_ptr<MeasureTool> > HitTestMeasureTools( |
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101 ScenePoint2D p); |
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102 |
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103 /** |
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104 This function will traverse the measuring tools and will clear their |
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105 highlighted state |
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106 */ |
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107 void ResetMeasuringToolsHighlight(); |
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108 |
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109 /** |
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110 With this method, the object takes ownership of the supplied tracker and |
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111 updates it according to user interaction |
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112 */ |
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113 void AcquireActiveTracker(IFlexiblePointerTracker* tracker); |
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114 |
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115 /** Forwarded to the underlying scene */ |
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116 AffineTransform2D GetCanvasToSceneTransform() const; |
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117 |
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118 /** Forwarded to the underlying scene */ |
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119 AffineTransform2D GetSceneToCanvasTransform() const; |
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120 |
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121 /** Forwarded to the underlying scene, and broadcasted to the observers */ |
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122 void SetSceneToCanvasTransform(const AffineTransform2D& transform); |
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123 |
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124 /** Forwarded to the underlying scene, and broadcasted to the observers */ |
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125 void FitContent(unsigned int viewportWidth, |
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126 unsigned int viewportHeight); |
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127 |
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128 /** Adds a new measure tool */ |
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129 void AddMeasureTool(boost::shared_ptr<MeasureTool> measureTool); |
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130 |
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131 /** Removes a measure tool or throws if it cannot be found */ |
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132 void RemoveMeasureTool(boost::shared_ptr<MeasureTool> measureTool); |
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133 |
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134 /** |
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135 The square handle side length in *scene* coordinates |
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136 */ |
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137 double GetHandleSideLengthS() const; |
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138 |
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139 /** |
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140 The angle measure too arc radius in *scene* coordinates |
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141 |
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142 Note: you might wonder why this is not part of the AngleMeasureTool itself, |
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143 but we prefer to put all such constants in the same location, to ease |
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144 */ |
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145 double GetAngleToolArcRadiusS() const; |
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146 |
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147 /** |
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148 The hit test maximum distance in *scene* coordinates. |
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149 If a pointer event is less than GetHandleSideLengthS() to a GUI element, |
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150 the hit test for this GUI element is seen as true |
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151 */ |
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152 double GetHitTestMaximumDistanceS() const; |
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153 |
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154 /** |
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155 Distance between the top of the angle measuring tool and the center of |
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156 the label showing the actual measure, in *scene* coordinates |
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157 */ |
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158 double GetAngleTopTextLabelDistanceS() const; |
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159 |
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160 |
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161 /** forwarded to the UndoStack */ |
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162 void PushCommand(boost::shared_ptr<MeasureCommand> command); |
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163 |
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164 /** forwarded to the UndoStack */ |
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165 void Undo(); |
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166 |
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167 /** forwarded to the UndoStack */ |
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168 void Redo(); |
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169 |
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170 /** forwarded to the UndoStack */ |
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171 bool CanUndo() const; |
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172 |
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173 /** forwarded to the UndoStack */ |
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174 bool CanRedo() const; |
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175 |
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176 |
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177 // Must be expressed in canvas coordinates |
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178 void HandleMousePress(IViewportInteractor& interactor, |
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179 const PointerEvent& event, |
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180 unsigned int viewportWidth, |
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181 unsigned int viewportHeight); |
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182 |
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183 // Must be expressed in canvas coordinates. Returns "true" if the |
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184 // state has changed, so that "Invalidate()" can be called. |
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185 bool HandleMouseMove(const PointerEvent& event); |
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186 |
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187 // Must be expressed in canvas coordinates |
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188 void HandleMouseRelease(const PointerEvent& event); |
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189 |
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190 const Scene2D& GetScene() const |
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191 { |
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192 return *scene_; |
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193 } |
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194 |
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195 Scene2D& GetScene() |
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196 { |
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197 return *scene_; |
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198 } |
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199 |
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200 /** |
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201 This method is used in a move pattern: when the ownership of the scene |
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202 managed by this viewport controller must be transferred to another |
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203 controller. |
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204 */ |
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205 Scene2D* ReleaseScene() |
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206 { |
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207 return scene_.release(); |
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208 } |
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209 |
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210 /** |
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211 This method is used when one wishes to replace the scene that is currently |
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212 managed by the controller. The previous scene is deleted and the controller |
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213 now has ownership of the new one. |
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214 */ |
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215 void AcquireScene(Scene2D* scene) |
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216 { |
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217 scene_.reset(scene); |
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218 } |
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219 |
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220 /** |
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221 Sets the undo stack that is used by PushCommand, Undo... |
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222 */ |
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223 void SetUndoStack(boost::weak_ptr<UndoStack> undoStackW) |
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224 { |
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225 undoStackW_ = undoStackW; |
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226 } |
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227 |
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228 bool HasActiveTracker() const |
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229 { |
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230 return activeTracker_.get() != NULL; |
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231 } |
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232 |
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233 private: |
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234 double GetCanvasToSceneFactor() const; |
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235 |
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236 boost::weak_ptr<IViewport> viewport_; |
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237 boost::weak_ptr<UndoStack> undoStackW_; // Global stack, possibly shared by all viewports |
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238 std::vector<boost::shared_ptr<MeasureTool> > measureTools_; |
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239 boost::shared_ptr<IFlexiblePointerTracker> activeTracker_; // TODO - Couldn't this be a "std::unique_ptr"? |
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240 |
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241 std::unique_ptr<Scene2D> scene_; |
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242 |
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243 // this is cached |
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244 double canvasToSceneFactor_; |
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245 }; |
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246 } |