Mercurial > hg > orthanc-stone
annotate Framework/Widgets/WorldSceneWidget.cpp @ 134:4cff7b1ed31d
upgrade to year 2018
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 02 Jan 2018 09:51:36 +0100 |
| parents | 28956ed68280 |
| children | fccffbf99ba1 |
| 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 | |
|
134
4cff7b1ed31d
upgrade to year 2018
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
47
diff
changeset
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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. | |
| 16 * | |
| 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 | |
| 16 | 24 #include "../../Resources/Orthanc/Core/OrthancException.h" |
| 0 | 25 |
| 26 namespace OrthancStone | |
| 27 { | |
| 28 static void MapMouseToScene(double& sceneX, | |
| 29 double& sceneY, | |
| 30 const ViewportGeometry& view, | |
| 31 int mouseX, | |
| 32 int mouseY) | |
| 33 { | |
| 34 // Take the center of the pixel | |
| 35 double x, y; | |
| 36 x = static_cast<double>(mouseX) + 0.5; | |
| 37 y = static_cast<double>(mouseY) + 0.5; | |
| 38 | |
| 39 view.MapDisplayToScene(sceneX, sceneY, x, y); | |
| 40 } | |
| 41 | |
| 42 | |
| 43 struct WorldSceneWidget::ViewChangeFunctor | |
| 44 { | |
| 45 const ViewportGeometry& view_; | |
| 46 | |
| 47 ViewChangeFunctor(const ViewportGeometry& view) : | |
| 48 view_(view) | |
| 49 { | |
| 50 } | |
| 51 | |
| 52 void operator() (IWorldObserver& observer, | |
| 53 const WorldSceneWidget& source) | |
| 54 { | |
| 55 observer.NotifyViewChange(source, view_); | |
| 56 } | |
| 57 }; | |
| 58 | |
| 59 | |
| 60 struct WorldSceneWidget::SizeChangeFunctor | |
| 61 { | |
| 62 ViewportGeometry& view_; | |
| 63 | |
| 64 SizeChangeFunctor(ViewportGeometry& view) : | |
| 65 view_(view) | |
| 66 { | |
| 67 } | |
| 68 | |
| 69 void operator() (IWorldObserver& observer, | |
| 70 const WorldSceneWidget& source) | |
| 71 { | |
| 72 observer.NotifySizeChange(source, view_); | |
| 73 } | |
| 74 }; | |
| 75 | |
| 76 | |
| 77 class WorldSceneWidget::SceneMouseTracker : public IMouseTracker | |
| 78 { | |
| 79 private: | |
| 80 ViewportGeometry view_; | |
| 81 std::auto_ptr<IWorldSceneMouseTracker> tracker_; | |
| 82 | |
| 83 public: | |
| 84 SceneMouseTracker(const ViewportGeometry& view, | |
| 85 IWorldSceneMouseTracker* tracker) : | |
| 86 view_(view), | |
| 87 tracker_(tracker) | |
| 88 { | |
| 89 assert(tracker != NULL); | |
| 90 } | |
| 91 | |
| 92 virtual void Render(Orthanc::ImageAccessor& target) | |
| 93 { | |
| 94 CairoSurface surface(target); | |
| 95 CairoContext context(surface); | |
| 96 view_.ApplyTransform(context); | |
| 97 tracker_->Render(context, view_.GetZoom()); | |
| 98 } | |
| 99 | |
| 100 virtual void MouseUp() | |
| 101 { | |
| 102 tracker_->MouseUp(); | |
| 103 } | |
| 104 | |
| 105 virtual void MouseMove(int x, | |
| 106 int y) | |
| 107 { | |
| 108 double sceneX, sceneY; | |
| 109 MapMouseToScene(sceneX, sceneY, view_, x, y); | |
| 110 tracker_->MouseMove(sceneX, sceneY); | |
| 111 } | |
| 112 }; | |
| 113 | |
| 114 | |
| 115 class WorldSceneWidget::PanMouseTracker : public IMouseTracker | |
| 116 { | |
| 117 private: | |
| 118 WorldSceneWidget& that_; | |
| 119 double previousPanX_; | |
| 120 double previousPanY_; | |
| 121 double downX_; | |
| 122 double downY_; | |
| 123 | |
| 124 public: | |
| 125 PanMouseTracker(WorldSceneWidget& that, | |
| 126 int x, | |
| 127 int y) : | |
| 128 that_(that), | |
| 129 downX_(x), | |
| 130 downY_(y) | |
| 131 { | |
| 132 SharedValue<ViewportGeometry>::Locker locker(that_.view_); | |
| 133 locker.GetValue().GetPan(previousPanX_, previousPanY_); | |
| 134 } | |
| 135 | |
| 136 virtual void Render(Orthanc::ImageAccessor& surface) | |
| 137 { | |
| 138 } | |
| 139 | |
| 140 virtual void MouseUp() | |
| 141 { | |
| 142 } | |
| 143 | |
| 144 virtual void MouseMove(int x, | |
| 145 int y) | |
| 146 { | |
| 147 SharedValue<ViewportGeometry>::Locker locker(that_.view_); | |
| 148 locker.GetValue().SetPan(previousPanX_ + x - downX_, | |
| 149 previousPanY_ + y - downY_); | |
| 150 | |
| 151 ViewChangeFunctor functor(locker.GetValue()); | |
| 152 that_.observers_.Notify(&that_, functor); | |
| 153 } | |
| 154 }; | |
| 155 | |
| 156 | |
| 157 class WorldSceneWidget::ZoomMouseTracker : public IMouseTracker | |
| 158 { | |
| 159 private: | |
| 160 WorldSceneWidget& that_; | |
| 161 int downX_; | |
| 162 int downY_; | |
| 163 double centerX_; | |
| 164 double centerY_; | |
| 165 double oldZoom_; | |
| 166 | |
| 167 public: | |
| 168 ZoomMouseTracker(WorldSceneWidget& that, | |
| 169 int x, | |
| 170 int y) : | |
| 171 that_(that), | |
| 172 downX_(x), | |
| 173 downY_(y) | |
| 174 { | |
| 175 SharedValue<ViewportGeometry>::Locker locker(that_.view_); | |
| 176 oldZoom_ = locker.GetValue().GetZoom(); | |
| 177 MapMouseToScene(centerX_, centerY_, locker.GetValue(), downX_, downY_); | |
| 178 } | |
| 179 | |
| 180 virtual void Render(Orthanc::ImageAccessor& surface) | |
| 181 { | |
| 182 } | |
| 183 | |
| 184 virtual void MouseUp() | |
| 185 { | |
| 186 } | |
| 187 | |
| 188 virtual void MouseMove(int x, | |
| 189 int y) | |
| 190 { | |
| 191 static const double MIN_ZOOM = -4; | |
| 192 static const double MAX_ZOOM = 4; | |
| 193 | |
| 194 SharedValue<ViewportGeometry>::Locker locker(that_.view_); | |
| 195 | |
| 196 if (locker.GetValue().GetDisplayHeight() <= 3) | |
| 197 { | |
| 198 return; // Cannot zoom on such a small image | |
| 199 } | |
| 200 | |
| 201 double dy = (static_cast<double>(y - downY_) / | |
| 202 static_cast<double>(locker.GetValue().GetDisplayHeight() - 1)); // In the range [-1,1] | |
| 203 double z; | |
| 204 | |
| 205 // Linear interpolation from [-1, 1] to [MIN_ZOOM, MAX_ZOOM] | |
| 206 if (dy < -1.0) | |
| 207 { | |
| 208 z = MIN_ZOOM; | |
| 209 } | |
| 210 else if (dy > 1.0) | |
| 211 { | |
| 212 z = MAX_ZOOM; | |
| 213 } | |
| 214 else | |
| 215 { | |
| 216 z = MIN_ZOOM + (MAX_ZOOM - MIN_ZOOM) * (dy + 1.0) / 2.0; | |
| 217 } | |
| 218 | |
| 219 z = pow(2.0, z); | |
| 220 | |
| 221 locker.GetValue().SetZoom(oldZoom_ * z); | |
| 222 | |
| 223 // Correct the pan so that the original click point is kept at | |
| 224 // the same location on the display | |
| 225 double panX, panY; | |
| 226 locker.GetValue().GetPan(panX, panY); | |
| 227 | |
| 228 int tx, ty; | |
| 229 locker.GetValue().MapSceneToDisplay(tx, ty, centerX_, centerY_); | |
| 230 locker.GetValue().SetPan(panX + static_cast<double>(downX_ - tx), | |
| 231 panY + static_cast<double>(downY_ - ty)); | |
| 232 | |
| 233 ViewChangeFunctor functor(locker.GetValue()); | |
| 234 that_.observers_.Notify(&that_, functor); | |
| 235 } | |
| 236 }; | |
| 237 | |
| 238 | |
| 239 void WorldSceneWidget::UpdateStep() | |
| 240 { | |
| 241 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 242 } | |
| 243 | |
| 244 | |
| 245 bool WorldSceneWidget::RenderCairo(CairoContext& context) | |
| 246 { | |
| 247 ViewportGeometry view; | |
| 248 | |
| 249 { | |
| 250 SharedValue<ViewportGeometry>::Locker locker(view_); | |
| 251 view = locker.GetValue(); | |
| 252 } | |
| 253 | |
| 254 view.ApplyTransform(context); | |
| 255 | |
| 256 return RenderScene(context, view); | |
| 257 } | |
| 258 | |
| 259 | |
| 260 void WorldSceneWidget::RenderMouseOverCairo(CairoContext& context, | |
| 261 int x, | |
| 262 int y) | |
| 263 { | |
| 264 ViewportGeometry view = GetView(); | |
| 265 view.ApplyTransform(context); | |
| 266 | |
| 267 double sceneX, sceneY; | |
| 268 MapMouseToScene(sceneX, sceneY, view, x, y); | |
| 269 RenderSceneMouseOver(context, view, sceneX, sceneY); | |
| 270 } | |
| 271 | |
| 272 | |
| 273 void WorldSceneWidget::SetSceneExtent(SharedValue<ViewportGeometry>::Locker& locker) | |
| 274 { | |
| 275 double x1, y1, x2, y2; | |
| 276 GetSceneExtent(x1, y1, x2, y2); | |
| 277 locker.GetValue().SetSceneExtent(x1, y1, x2, y2); | |
| 278 } | |
| 279 | |
| 280 | |
| 281 void WorldSceneWidget::SetSize(unsigned int width, | |
| 282 unsigned int height) | |
| 283 { | |
| 284 CairoWidget::SetSize(width, height); | |
| 285 | |
| 286 { | |
| 287 SharedValue<ViewportGeometry>::Locker locker(view_); | |
| 288 locker.GetValue().SetDisplaySize(width, height); | |
| 289 | |
| 290 if (observers_.IsEmpty()) | |
| 291 { | |
| 292 // Without a size observer, use the default view | |
| 293 locker.GetValue().SetDefaultView(); | |
| 294 } | |
| 295 else | |
| 296 { | |
| 297 // With a size observer, let it decide which view to use | |
| 298 SizeChangeFunctor functor(locker.GetValue()); | |
| 299 observers_.Notify(this, functor); | |
| 300 } | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 | |
| 305 void WorldSceneWidget::SetInteractor(IWorldSceneInteractor& interactor) | |
| 306 { | |
| 307 if (IsStarted()) | |
| 308 { | |
| 309 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 310 } | |
| 311 | |
| 312 interactor_ = &interactor; | |
| 313 } | |
| 314 | |
| 315 | |
| 316 void WorldSceneWidget::Start() | |
| 317 { | |
| 318 ViewportGeometry geometry; | |
| 319 | |
| 320 { | |
| 321 SharedValue<ViewportGeometry>::Locker locker(view_); | |
| 322 SetSceneExtent(locker); | |
| 323 geometry = locker.GetValue(); | |
| 324 } | |
| 325 | |
| 326 WidgetBase::Start(); | |
| 327 | |
| 328 ViewChangeFunctor functor(geometry); | |
| 329 observers_.Notify(this, functor); | |
| 330 } | |
| 331 | |
| 332 | |
| 333 void WorldSceneWidget::SetDefaultView() | |
| 334 { | |
| 335 ViewportGeometry geometry; | |
| 336 | |
| 337 { | |
| 338 SharedValue<ViewportGeometry>::Locker locker(view_); | |
| 339 SetSceneExtent(locker); | |
| 340 locker.GetValue().SetDefaultView(); | |
| 341 geometry = locker.GetValue(); | |
| 342 } | |
| 343 | |
| 344 NotifyChange(); | |
| 345 | |
| 346 ViewChangeFunctor functor(geometry); | |
| 347 observers_.Notify(this, functor); | |
| 348 } | |
| 349 | |
| 350 | |
| 351 void WorldSceneWidget::SetView(const ViewportGeometry& view) | |
| 352 { | |
| 353 { | |
| 354 SharedValue<ViewportGeometry>::Locker locker(view_); | |
| 355 locker.GetValue() = view; | |
| 356 } | |
| 357 | |
| 358 NotifyChange(); | |
| 359 | |
| 360 ViewChangeFunctor functor(view); | |
| 361 observers_.Notify(this, functor); | |
| 362 } | |
| 363 | |
| 364 | |
| 365 ViewportGeometry WorldSceneWidget::GetView() | |
| 366 { | |
| 367 SharedValue<ViewportGeometry>::Locker locker(view_); | |
| 368 return locker.GetValue(); | |
| 369 } | |
| 370 | |
| 371 | |
| 372 IMouseTracker* WorldSceneWidget::CreateMouseTracker(MouseButton button, | |
| 373 int x, | |
| 374 int y, | |
| 375 KeyboardModifiers modifiers) | |
| 376 { | |
| 377 ViewportGeometry view = GetView(); | |
| 378 | |
| 379 double sceneX, sceneY; | |
| 380 MapMouseToScene(sceneX, sceneY, view, x, y); | |
| 381 | |
| 382 std::auto_ptr<IWorldSceneMouseTracker> tracker(CreateMouseSceneTracker(view, button, sceneX, sceneY, modifiers)); | |
| 383 if (tracker.get() != NULL) | |
| 384 { | |
| 385 return new SceneMouseTracker(view, tracker.release()); | |
| 386 } | |
| 387 | |
| 388 switch (button) | |
| 389 { | |
| 390 case MouseButton_Middle: | |
| 391 return new PanMouseTracker(*this, x, y); | |
| 392 | |
| 393 case MouseButton_Right: | |
| 394 return new ZoomMouseTracker(*this, x, y); | |
| 395 | |
| 396 default: | |
| 397 return NULL; | |
| 398 } | |
| 399 } | |
| 400 | |
| 401 | |
| 402 void WorldSceneWidget::RenderSceneMouseOver(CairoContext& context, | |
| 403 const ViewportGeometry& view, | |
| 404 double x, | |
| 405 double y) | |
| 406 { | |
| 407 if (interactor_) | |
| 408 { | |
| 409 interactor_->MouseOver(context, *this, GetSlice(), view, x, y, GetStatusBar()); | |
| 410 } | |
| 411 } | |
| 412 | |
| 413 IWorldSceneMouseTracker* WorldSceneWidget::CreateMouseSceneTracker(const ViewportGeometry& view, | |
| 414 MouseButton button, | |
| 415 double x, | |
| 416 double y, | |
| 417 KeyboardModifiers modifiers) | |
| 418 { | |
| 419 if (interactor_) | |
| 420 { | |
| 421 return interactor_->CreateMouseTracker(*this, GetSlice(), view, button, x, y, GetStatusBar()); | |
| 422 } | |
| 423 else | |
| 424 { | |
| 425 return NULL; | |
| 426 } | |
| 427 } | |
| 428 | |
| 429 | |
| 430 void WorldSceneWidget::MouseWheel(MouseWheelDirection direction, | |
| 431 int x, | |
| 432 int y, | |
| 433 KeyboardModifiers modifiers) | |
| 434 { | |
| 435 if (interactor_) | |
| 436 { | |
| 437 interactor_->MouseWheel(*this, direction, modifiers, GetStatusBar()); | |
| 438 } | |
| 439 } | |
| 440 | |
| 441 | |
| 442 void WorldSceneWidget::KeyPressed(char key, | |
| 443 KeyboardModifiers modifiers) | |
| 444 { | |
| 445 if (interactor_) | |
| 446 { | |
| 447 interactor_->KeyPressed(*this, key, modifiers, GetStatusBar()); | |
| 448 } | |
| 449 } | |
| 450 } |