Mercurial > hg > orthanc-stone

annotate Framework/Widgets/WorldSceneWidget.cpp @ 561:1201b12eb9f8 dev

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author Alain Mazy <alain@mazy.be>
date Thu, 18 Apr 2019 09:30:00 +0200
parents 3b4df9925db6 aaeec7be8fb7
children 9a474e90e832
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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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22 #include "WorldSceneWidget.h"
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24 #include "PanMouseTracker.h"
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25 #include "ZoomMouseTracker.h"
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26 #include "PanZoomMouseTracker.h"
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28 #include <Core/Logging.h>
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29 #include <Core/OrthancException.h>
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31 #include <math.h>
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32 #include <memory>
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33 #include <cassert>
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35 namespace OrthancStone
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36 {
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37 // this is an adapter between a IWorldSceneMouseTracker
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38 // that is tracking a mouse in scene coordinates/mm and
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39 // an IMouseTracker that is tracking a mouse
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40 // in screen coordinates/pixels.
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41 class WorldSceneWidget::SceneMouseTracker : public IMouseTracker
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42 {
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43 private:
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44 ViewportGeometry view_;
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45 std::auto_ptr<IWorldSceneMouseTracker> tracker_;
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47 public:
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48 SceneMouseTracker(const ViewportGeometry& view,
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49 IWorldSceneMouseTracker* tracker) :
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50 view_(view),
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51 tracker_(tracker)
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52 {
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53 if (tracker == NULL)
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54 {
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55 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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56 }
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57 }
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59 virtual void Render(Orthanc::ImageAccessor& target)
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60 {
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61 if (tracker_->HasRender())
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62 {
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63 CairoSurface surface(target, false /* no alpha */);
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64 CairoContext context(surface);
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65 view_.ApplyTransform(context);
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66 tracker_->Render(context, view_.GetZoom());
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67 }
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68 }
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69
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70 virtual void MouseUp()
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71 {
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72 tracker_->MouseUp();
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73 }
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74
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75 virtual void MouseMove(int x,
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76 int y,
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77 const std::vector<Touch>& displayTouches)
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78 {
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79 double sceneX, sceneY;
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80 view_.MapPixelCenterToScene(sceneX, sceneY, x, y);
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82 std::vector<Touch> sceneTouches;
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83 for (size_t t = 0; t < displayTouches.size(); t++)
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84 {
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85 double sx, sy;
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86 view_.MapPixelCenterToScene(sx, sy, (int)displayTouches[t].x, (int)displayTouches[t].y);
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87 sceneTouches.push_back(Touch(sx, sy));
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88 }
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89 tracker_->MouseMove(x, y, sceneX, sceneY, displayTouches, sceneTouches);
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90 }
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91 };
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94 bool WorldSceneWidget::RenderCairo(CairoContext& context)
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95 {
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96 view_.ApplyTransform(context);
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97 return RenderScene(context, view_);
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98 }
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100
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101 void WorldSceneWidget::RenderMouseOverCairo(CairoContext& context,
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102 int x,
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103 int y)
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104 {
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105 ViewportGeometry view = GetView();
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106 view.ApplyTransform(context);
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107
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108 double sceneX, sceneY;
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109 view.MapPixelCenterToScene(sceneX, sceneY, x, y);
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111 if (interactor_)
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112 {
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113 interactor_->MouseOver(context, *this, view, sceneX, sceneY, GetStatusBar());
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114 }
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115 }
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117
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118 void WorldSceneWidget::SetSceneExtent(ViewportGeometry& view)
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119 {
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120 view.SetSceneExtent(GetSceneExtent());
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121 }
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124 void WorldSceneWidget::SetSize(unsigned int width,
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125 unsigned int height)
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126 {
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127 CairoWidget::SetSize(width, height);
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128 view_.SetDisplaySize(width, height);
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129 }
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131
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132 void WorldSceneWidget::SetInteractor(IWorldSceneInteractor& interactor)
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133 {
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134 interactor_ = &interactor;
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135 }
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137
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138 void WorldSceneWidget::FitContent()
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139 {
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140 SetSceneExtent(view_);
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141 view_.FitContent();
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142
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143 NotifyContentChanged();
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144 }
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145
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146
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147 void WorldSceneWidget::SetView(const ViewportGeometry& view)
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148 {
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149 view_ = view;
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150
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151 NotifyContentChanged();
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152 }
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153
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154
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155 IMouseTracker* WorldSceneWidget::CreateMouseTracker(MouseButton button,
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156 int x,
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157 int y,
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158 KeyboardModifiers modifiers,
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159 const std::vector<Touch>& touches)
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160 {
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161 double sceneX, sceneY;
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162 view_.MapPixelCenterToScene(sceneX, sceneY, x, y);
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163
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164 // asks the Widget Interactor to provide a mouse tracker
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165 std::auto_ptr<IWorldSceneMouseTracker> tracker;
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166
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167 if (interactor_)
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168 {
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169 tracker.reset(interactor_->CreateMouseTracker(*this, view_, button, modifiers, x, y, sceneX, sceneY, GetStatusBar(), touches));
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170 }
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171
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172 if (tracker.get() != NULL)
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173 {
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174 return new SceneMouseTracker(view_, tracker.release());
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175 }
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176 else if (hasDefaultMouseEvents_)
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177 {
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178 printf("has default mouse events\n");
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179 if (touches.size() == 2)
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180 {
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181 printf("2 touches !\n");
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182 return new SceneMouseTracker(view_, new PanZoomMouseTracker(*this, touches));
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183 }
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184 else
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185 {
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186 switch (button)
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187 {
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188 case MouseButton_Middle:
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189 return new SceneMouseTracker(view_, new PanMouseTracker(*this, x, y));
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190
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191 case MouseButton_Right:
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192 return new SceneMouseTracker(view_, new ZoomMouseTracker(*this, x, y));
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193
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194 default:
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195 return NULL;
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196 }
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197 }
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198 }
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199 else
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200 {
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201 return NULL;
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202 }
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203 }
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204
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205
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206 void WorldSceneWidget::MouseWheel(MouseWheelDirection direction,
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207 int x,
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208 int y,
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209 KeyboardModifiers modifiers)
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210 {
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211 if (interactor_)
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212 {
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213 interactor_->MouseWheel(*this, direction, modifiers, GetStatusBar());
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214 }
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215 }
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216
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217
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218 void WorldSceneWidget::KeyPressed(KeyboardKeys key,
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219 char keyChar,
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220 KeyboardModifiers modifiers)
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221 {
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222 if (interactor_)
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223 {
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224 interactor_->KeyPressed(*this, key, keyChar, modifiers, GetStatusBar());
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225 }
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226 }
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227 }