Mercurial > hg > orthanc-stone
annotate Framework/Scene2DViewport/ViewportController.h @ 858:e3c56d4f863f
GuiAdapter : mouse event routing in SDL + split the undo stack from the
ViewportController for multi-canvas apps + adapted the samples to this change
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Mon, 24 Jun 2019 10:31:04 +0200 |
parents | 2b245953b44b |
children | a29c13497557 |
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 "PredeclaredTypes.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 class UndoStack; |
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34 |
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35 const double ARC_RADIUS_CANVAS_COORD = 30.0; |
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36 const double TEXT_CENTER_DISTANCE_CANVAS_COORD = 90; |
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37 |
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38 const double HANDLE_SIDE_LENGTH_CANVAS_COORD = 10.0; |
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39 const double HIT_TEST_MAX_DISTANCE_CANVAS_COORD = 15.0; |
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40 |
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41 const uint8_t TEXT_COLOR_RED = 0; |
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42 const uint8_t TEXT_COLOR_GREEN = 223; |
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43 const uint8_t TEXT_COLOR_BLUE = 81; |
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44 |
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45 const uint8_t TOOL_LINES_COLOR_RED = 0; |
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46 const uint8_t TOOL_LINES_COLOR_GREEN = 223; |
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47 const uint8_t TOOL_LINES_COLOR_BLUE = 21; |
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48 |
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49 |
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50 const uint8_t TEXT_OUTLINE_COLOR_RED = 0; |
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51 const uint8_t TEXT_OUTLINE_COLOR_GREEN = 56; |
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52 const uint8_t TEXT_OUTLINE_COLOR_BLUE = 21; |
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53 |
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54 /** |
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55 This object is responsible for hosting a scene, responding to messages from |
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56 the model and updating the scene accordingly. |
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57 |
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58 It contains the list of active measuring tools as well as the stack |
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59 where measuring tool commands are stored. |
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60 |
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61 The active tracker is also stored in the viewport controller. |
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62 |
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63 Each canvas or other GUI area where we want to display a 2D image, either |
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64 directly or through slicing must be assigned a ViewportController. |
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65 */ |
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66 class ViewportController : public IObservable |
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67 { |
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68 public: |
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69 ORTHANC_STONE_DEFINE_ORIGIN_MESSAGE(__FILE__, __LINE__, \ |
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70 SceneTransformChanged, ViewportController); |
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71 |
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72 ViewportController(boost::weak_ptr<UndoStack> undoStackW, MessageBroker& broker); |
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73 |
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74 boost::shared_ptr<const Scene2D> GetScene() const; |
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75 boost::shared_ptr<Scene2D> GetScene(); |
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76 |
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77 /** |
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78 This method is called by the GUI system and should update/delete the |
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79 current tracker |
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80 */ |
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81 bool HandlePointerEvent(PointerEvent e); |
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82 |
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83 /** |
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84 This method returns the list of measure tools containing the supplied point |
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85 (in scene coords). A tracker can then be requested from the chosen |
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86 measure tool, if needed |
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87 */ |
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88 std::vector<boost::shared_ptr<MeasureTool> > HitTestMeasureTools(ScenePoint2D p); |
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89 |
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90 /** |
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91 With this method, the object takes ownership of the supplied tracker and |
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92 updates it according to user interaction |
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93 */ |
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94 void SetActiveTracker(boost::shared_ptr<IFlexiblePointerTracker> tracker); |
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95 |
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96 /** Forwarded to the underlying scene */ |
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97 const AffineTransform2D& GetCanvasToSceneTransform() const; |
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98 |
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99 /** Forwarded to the underlying scene */ |
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100 const AffineTransform2D& GetSceneToCanvasTransform() const; |
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101 |
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102 /** Forwarded to the underlying scene, and broadcasted to the observers */ |
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103 void SetSceneToCanvasTransform(const AffineTransform2D& transform); |
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104 |
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105 /** Forwarded to the underlying scene, and broadcasted to the observers */ |
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106 void FitContent(unsigned int canvasWidth, unsigned int canvasHeight); |
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107 |
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108 /** Adds a new measure tool */ |
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109 void AddMeasureTool(boost::shared_ptr<MeasureTool> measureTool); |
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110 |
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111 /** Removes a measure tool or throws if it cannot be found */ |
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112 void RemoveMeasureTool(boost::shared_ptr<MeasureTool> measureTool); |
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113 |
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114 /** |
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115 The square handle side length in *scene* coordinates |
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116 */ |
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117 double GetHandleSideLengthS() const; |
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118 |
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119 /** |
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120 The angle measure too arc radius in *scene* coordinates |
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121 |
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122 Note: you might wonder why this is not part of the AngleMeasureTool itself, |
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123 but we prefer to put all such constants in the same location, to ease |
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124 */ |
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125 double GetAngleToolArcRadiusS() const; |
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126 |
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127 /** |
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128 The hit test maximum distance in *scene* coordinates. |
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129 If a pointer event is less than GetHandleSideLengthS() to a GUI element, |
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130 the hit test for this GUI element is seen as true |
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131 */ |
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132 double GetHitTestMaximumDistanceS() const; |
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133 |
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134 /** |
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135 Distance between the top of the angle measuring tool and the center of |
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136 the label showing the actual measure, in *scene* coordinates |
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137 */ |
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138 double GetAngleTopTextLabelDistanceS() const; |
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139 |
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140 |
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141 /** forwarded to the UndoStack */ |
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142 void PushCommand(boost::shared_ptr<TrackerCommand> command); |
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143 |
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144 /** forwarded to the UndoStack */ |
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145 void Undo(); |
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146 |
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147 /** forwarded to the UndoStack */ |
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148 void Redo(); |
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149 |
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150 /** forwarded to the UndoStack */ |
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151 bool CanUndo() const; |
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152 |
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153 /** forwarded to the UndoStack */ |
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154 bool CanRedo() const; |
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155 |
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156 |
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157 private: |
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158 double GetCanvasToSceneFactor() const; |
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159 |
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160 boost::weak_ptr<UndoStack> undoStackW_; |
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161 |
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162 boost::shared_ptr<UndoStack> GetUndoStack(); |
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163 boost::shared_ptr<const UndoStack> GetUndoStack() const; |
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164 |
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165 std::vector<boost::shared_ptr<MeasureTool> > measureTools_; |
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166 boost::shared_ptr<Scene2D> scene_; |
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167 boost::shared_ptr<IFlexiblePointerTracker> tracker_; |
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168 |
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169 // this is cached |
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170 mutable double canvasToSceneFactor_; |
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171 }; |
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172 } |