Mercurial > hg > orthanc-stone
annotate Framework/Widgets/WorldSceneWidget.cpp @ 329:b10dfdb96866 am-2
removing WorldSceneWidget::IWorldObserver
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 17 Oct 2018 12:30:32 +0200 |
| parents | 8716176ff7f0 |
| children | 7a364e44fbb4 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 47 | 8 * modify it under the terms of the GNU Affero General Public License |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 0 | 11 * |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 47 | 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 * Affero General Public License for more details. | |
| 281 | 16 * |
| 47 | 17 * You should have received a copy of the GNU Affero General Public License |
| 0 | 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "WorldSceneWidget.h" | |
| 23 | |
|
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24 #include <math.h> |
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25 #include <memory> |
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26 #include <cassert> |
| 313 | 27 #include "Core/Logging.h" |
| 0 | 28 |
| 29 namespace OrthancStone | |
| 30 { | |
| 31 static void MapMouseToScene(double& sceneX, | |
| 32 double& sceneY, | |
| 33 const ViewportGeometry& view, | |
| 34 int mouseX, | |
| 35 int mouseY) | |
| 36 { | |
| 37 // Take the center of the pixel | |
| 38 double x, y; | |
| 39 x = static_cast<double>(mouseX) + 0.5; | |
| 40 y = static_cast<double>(mouseY) + 0.5; | |
| 41 | |
| 42 view.MapDisplayToScene(sceneX, sceneY, x, y); | |
| 43 } | |
| 44 | |
| 45 | |
| 281 | 46 // this is an adapter between a IWorldSceneMouseTracker |
| 47 // that is tracking a mouse in scene coordinates/mm and | |
| 48 // an IMouseTracker that is tracking a mouse | |
| 49 // in screen coordinates/pixels. | |
| 0 | 50 class WorldSceneWidget::SceneMouseTracker : public IMouseTracker |
| 51 { | |
| 52 private: | |
| 53 ViewportGeometry view_; | |
| 54 std::auto_ptr<IWorldSceneMouseTracker> tracker_; | |
| 281 | 55 |
| 0 | 56 public: |
| 57 SceneMouseTracker(const ViewportGeometry& view, | |
| 58 IWorldSceneMouseTracker* tracker) : | |
| 59 view_(view), | |
| 60 tracker_(tracker) | |
| 61 { | |
| 62 assert(tracker != NULL); | |
| 63 } | |
| 64 | |
| 65 virtual void Render(Orthanc::ImageAccessor& target) | |
| 66 { | |
| 67 CairoSurface surface(target); | |
| 281 | 68 CairoContext context(surface); |
| 0 | 69 view_.ApplyTransform(context); |
| 70 tracker_->Render(context, view_.GetZoom()); | |
| 71 } | |
| 72 | |
| 281 | 73 virtual void MouseUp() |
| 0 | 74 { |
| 75 tracker_->MouseUp(); | |
| 76 } | |
| 77 | |
| 281 | 78 virtual void MouseMove(int x, |
| 0 | 79 int y) |
| 80 { | |
| 81 double sceneX, sceneY; | |
| 82 MapMouseToScene(sceneX, sceneY, view_, x, y); | |
| 83 tracker_->MouseMove(sceneX, sceneY); | |
| 84 } | |
| 85 }; | |
| 86 | |
| 87 | |
| 281 | 88 WorldSceneWidget::PanMouseTracker::PanMouseTracker(WorldSceneWidget& that, |
| 89 int x, | |
| 90 int y) : | |
| 91 that_(that), | |
| 92 downX_(x), | |
| 93 downY_(y) | |
| 0 | 94 { |
| 281 | 95 that_.view_.GetPan(previousPanX_, previousPanY_); |
| 96 } | |
| 97 | |
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98 |
| 281 | 99 void WorldSceneWidget::PanMouseTracker::MouseMove(int x, int y) |
| 100 { | |
| 101 that_.view_.SetPan(previousPanX_ + x - downX_, | |
| 102 previousPanY_ + y - downY_); | |
| 103 } | |
| 0 | 104 |
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105 |
| 281 | 106 WorldSceneWidget::ZoomMouseTracker::ZoomMouseTracker(WorldSceneWidget& that, |
| 107 int x, | |
| 108 int y) : | |
| 109 that_(that), | |
| 110 downX_(x), | |
| 111 downY_(y) | |
| 112 { | |
| 113 oldZoom_ = that_.view_.GetZoom(); | |
| 114 MapMouseToScene(centerX_, centerY_, that_.view_, downX_, downY_); | |
| 115 } | |
| 116 | |
| 117 void WorldSceneWidget::ZoomMouseTracker::MouseMove(int x, | |
| 118 int y) | |
| 119 { | |
| 120 static const double MIN_ZOOM = -4; | |
| 121 static const double MAX_ZOOM = 4; | |
| 122 | |
| 123 if (that_.view_.GetDisplayHeight() <= 3) | |
| 0 | 124 { |
| 313 | 125 LOG(WARNING) << "image is too small to zoom (current height = " << that_.view_.GetDisplayHeight() << ")"; |
| 126 return; | |
| 0 | 127 } |
| 128 | |
| 281 | 129 double dy = (static_cast<double>(y - downY_) / |
| 130 static_cast<double>(that_.view_.GetDisplayHeight() - 1)); // In the range [-1,1] | |
| 131 double z; | |
| 0 | 132 |
| 281 | 133 // Linear interpolation from [-1, 1] to [MIN_ZOOM, MAX_ZOOM] |
| 134 if (dy < -1.0) | |
| 0 | 135 { |
| 281 | 136 z = MIN_ZOOM; |
| 0 | 137 } |
| 281 | 138 else if (dy > 1.0) |
| 0 | 139 { |
| 281 | 140 z = MAX_ZOOM; |
| 0 | 141 } |
| 281 | 142 else |
| 0 | 143 { |
| 281 | 144 z = MIN_ZOOM + (MAX_ZOOM - MIN_ZOOM) * (dy + 1.0) / 2.0; |
| 0 | 145 } |
| 146 | |
| 281 | 147 z = pow(2.0, z); |
| 0 | 148 |
| 281 | 149 that_.view_.SetZoom(oldZoom_ * z); |
| 0 | 150 |
| 281 | 151 // Correct the pan so that the original click point is kept at |
| 152 // the same location on the display | |
| 153 double panX, panY; | |
| 154 that_.view_.GetPan(panX, panY); | |
| 0 | 155 |
| 281 | 156 int tx, ty; |
| 157 that_.view_.MapSceneToDisplay(tx, ty, centerX_, centerY_); | |
| 158 that_.view_.SetPan(panX + static_cast<double>(downX_ - tx), | |
| 159 panY + static_cast<double>(downY_ - ty)); | |
| 160 } | |
| 0 | 161 |
| 162 | |
| 163 bool WorldSceneWidget::RenderCairo(CairoContext& context) | |
| 164 { | |
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165 view_.ApplyTransform(context); |
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166 return RenderScene(context, view_); |
| 0 | 167 } |
| 168 | |
| 169 | |
| 170 void WorldSceneWidget::RenderMouseOverCairo(CairoContext& context, | |
| 171 int x, | |
| 172 int y) | |
| 173 { | |
| 174 ViewportGeometry view = GetView(); | |
| 175 view.ApplyTransform(context); | |
| 176 | |
| 177 double sceneX, sceneY; | |
| 178 MapMouseToScene(sceneX, sceneY, view, x, y); | |
| 179 RenderSceneMouseOver(context, view, sceneX, sceneY); | |
| 180 } | |
| 181 | |
| 182 | |
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183 void WorldSceneWidget::SetSceneExtent(ViewportGeometry& view) |
| 0 | 184 { |
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185 view.SetSceneExtent(GetSceneExtent()); |
| 0 | 186 } |
| 187 | |
| 188 | |
| 189 void WorldSceneWidget::SetSize(unsigned int width, | |
| 190 unsigned int height) | |
| 191 { | |
| 192 CairoWidget::SetSize(width, height); | |
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193 view_.SetDisplaySize(width, height); |
| 0 | 194 } |
| 195 | |
| 196 | |
| 197 void WorldSceneWidget::SetInteractor(IWorldSceneInteractor& interactor) | |
| 198 { | |
| 199 interactor_ = &interactor; | |
| 200 } | |
| 201 | |
| 202 | |
| 203 void WorldSceneWidget::SetDefaultView() | |
| 204 { | |
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205 SetSceneExtent(view_); |
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206 view_.SetDefaultView(); |
| 0 | 207 |
| 278 | 208 NotifyContentChanged(); |
| 0 | 209 } |
| 210 | |
| 211 | |
| 212 void WorldSceneWidget::SetView(const ViewportGeometry& view) | |
| 213 { | |
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214 view_ = view; |
| 0 | 215 |
| 278 | 216 NotifyContentChanged(); |
| 0 | 217 } |
| 218 | |
| 219 | |
| 220 ViewportGeometry WorldSceneWidget::GetView() | |
| 221 { | |
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222 return view_; |
| 0 | 223 } |
| 224 | |
| 225 | |
| 226 IMouseTracker* WorldSceneWidget::CreateMouseTracker(MouseButton button, | |
| 227 int x, | |
| 228 int y, | |
| 229 KeyboardModifiers modifiers) | |
| 230 { | |
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231 double sceneX, sceneY; |
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232 MapMouseToScene(sceneX, sceneY, view_, x, y); |
| 0 | 233 |
| 281 | 234 // asks the Widget Interactor to provide a mouse tracker |
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235 std::auto_ptr<IWorldSceneMouseTracker> tracker |
| 281 | 236 (CreateMouseSceneTracker(view_, button, sceneX, sceneY, modifiers)); |
| 0 | 237 |
| 238 if (tracker.get() != NULL) | |
| 239 { | |
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240 return new SceneMouseTracker(view_, tracker.release()); |
| 0 | 241 } |
| 281 | 242 //TODO: allow Interactor to create Pan & Zoom |
| 0 | 243 switch (button) |
| 244 { | |
| 281 | 245 case MouseButton_Middle: |
| 246 return new PanMouseTracker(*this, x, y); | |
| 0 | 247 |
| 281 | 248 case MouseButton_Right: |
| 249 return new ZoomMouseTracker(*this, x, y); | |
| 0 | 250 |
| 281 | 251 default: |
| 252 return NULL; | |
| 0 | 253 } |
| 254 } | |
| 255 | |
| 256 | |
| 257 void WorldSceneWidget::RenderSceneMouseOver(CairoContext& context, | |
| 258 const ViewportGeometry& view, | |
| 259 double x, | |
| 260 double y) | |
| 261 { | |
| 262 if (interactor_) | |
| 263 { | |
| 59 | 264 interactor_->MouseOver(context, *this, view, x, y, GetStatusBar()); |
| 0 | 265 } |
| 266 } | |
| 267 | |
| 268 IWorldSceneMouseTracker* WorldSceneWidget::CreateMouseSceneTracker(const ViewportGeometry& view, | |
| 269 MouseButton button, | |
| 270 double x, | |
| 271 double y, | |
| 272 KeyboardModifiers modifiers) | |
| 273 { | |
| 274 if (interactor_) | |
| 275 { | |
| 281 | 276 return interactor_->CreateMouseTracker(*this, view, button, modifiers, x, y, GetStatusBar()); |
| 0 | 277 } |
| 278 else | |
| 279 { | |
| 280 return NULL; | |
| 281 } | |
| 282 } | |
| 283 | |
| 284 | |
| 285 void WorldSceneWidget::MouseWheel(MouseWheelDirection direction, | |
| 286 int x, | |
| 287 int y, | |
| 281 | 288 KeyboardModifiers modifiers) |
| 0 | 289 { |
| 290 if (interactor_) | |
| 291 { | |
| 292 interactor_->MouseWheel(*this, direction, modifiers, GetStatusBar()); | |
| 293 } | |
| 294 } | |
| 295 | |
| 296 | |
| 327 | 297 void WorldSceneWidget::KeyPressed(KeyboardKeys key, |
| 298 char keyChar, | |
| 0 | 299 KeyboardModifiers modifiers) |
| 300 { | |
| 301 if (interactor_) | |
| 302 { | |
| 327 | 303 interactor_->KeyPressed(*this, key, keyChar, modifiers, GetStatusBar()); |
| 0 | 304 } |
| 305 } | |
| 306 } |