Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayerWidget.cpp @ 93:5945e81734a3 wasm
decoding of JPEG images
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 29 May 2017 17:28:31 +0200 |
| parents | 961ee171d933 |
| children | f47349f4815c |
| rev | line source |
|---|---|
| 66 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017 Osimis, Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 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. | |
| 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 | |
| 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 | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "LayerWidget.h" | |
| 23 | |
| 24 #include "../../Resources/Orthanc/Core/Logging.h" | |
| 85 | 25 #include "../Layers/MissingLayerRenderer.h" |
| 26 | |
| 27 static const double THIN_SLICE_THICKNESS = 100.0 * std::numeric_limits<double>::epsilon(); | |
| 66 | 28 |
| 29 namespace OrthancStone | |
| 30 { | |
| 31 class LayerWidget::Scene : public boost::noncopyable | |
| 32 { | |
| 33 private: | |
| 34 SliceGeometry slice_; | |
| 35 size_t countMissing_; | |
| 36 std::vector<ILayerRenderer*> renderers_; | |
| 37 | |
| 38 void DeleteLayer(size_t index) | |
| 39 { | |
| 40 if (index >= renderers_.size()) | |
| 41 { | |
| 42 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 43 } | |
| 44 | |
| 45 assert(countMissing_ <= renderers_.size()); | |
| 46 | |
| 47 if (renderers_[index] != NULL) | |
| 48 { | |
| 49 assert(countMissing_ < renderers_.size()); | |
| 50 delete renderers_[index]; | |
| 51 renderers_[index] = NULL; | |
| 52 countMissing_++; | |
| 53 } | |
| 54 } | |
| 55 | |
| 56 public: | |
| 57 Scene(const SliceGeometry& slice, | |
| 58 size_t countLayers) : | |
| 59 slice_(slice), | |
| 60 countMissing_(countLayers), | |
| 61 renderers_(countLayers, NULL) | |
| 62 { | |
| 63 } | |
| 64 | |
| 65 ~Scene() | |
| 66 { | |
| 67 for (size_t i = 0; i < renderers_.size(); i++) | |
| 68 { | |
| 69 DeleteLayer(i); | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 void SetLayer(size_t index, | |
| 74 ILayerRenderer* renderer) // Takes ownership | |
| 75 { | |
| 76 if (renderer == NULL) | |
| 77 { | |
| 78 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 79 } | |
| 80 | |
| 81 DeleteLayer(index); | |
| 82 | |
| 83 renderers_[index] = renderer; | |
| 84 countMissing_--; | |
| 85 } | |
| 86 | |
| 87 const SliceGeometry& GetSlice() const | |
| 88 { | |
| 89 return slice_; | |
| 90 } | |
| 91 | |
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92 bool HasRenderer(size_t index) |
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93 { |
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94 return renderers_[index] != NULL; |
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95 } |
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96 |
| 66 | 97 bool IsComplete() const |
| 98 { | |
| 99 return countMissing_ == 0; | |
| 100 } | |
| 101 | |
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102 unsigned int GetCountMissing() const |
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103 { |
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104 return countMissing_; |
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105 } |
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106 |
| 66 | 107 bool RenderScene(CairoContext& context, |
| 108 const ViewportGeometry& view) | |
| 109 { | |
| 110 bool fullQuality = true; | |
| 111 | |
| 112 for (size_t i = 0; i < renderers_.size(); i++) | |
| 113 { | |
| 114 if (renderers_[i] != NULL && | |
| 77 | 115 !renderers_[i]->RenderLayer(context, view, slice_)) |
| 66 | 116 { |
| 117 return false; | |
| 118 } | |
| 119 | |
| 120 if (renderers_[i] != NULL && | |
| 121 !renderers_[i]->IsFullQuality()) | |
| 122 { | |
| 123 fullQuality = false; | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 if (!fullQuality) | |
| 128 { | |
| 129 double x, y; | |
| 130 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
| 131 | |
| 132 cairo_t *cr = context.GetObject(); | |
| 133 cairo_translate(cr, x, y); | |
| 134 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); | |
| 135 cairo_set_line_width(cr, 2.0 / view.GetZoom()); | |
| 136 cairo_set_source_rgb(cr, 1, 1, 1); | |
| 137 cairo_stroke_preserve(cr); | |
| 138 cairo_set_source_rgb(cr, 1, 0, 0); | |
| 139 cairo_fill(cr); | |
| 140 } | |
| 141 | |
| 142 return true; | |
| 143 } | |
| 144 | |
| 145 void SetLayerStyle(size_t index, | |
| 146 const RenderStyle& style) | |
| 147 { | |
| 148 if (renderers_[index] != NULL) | |
| 149 { | |
| 150 renderers_[index]->SetLayerStyle(style); | |
| 151 } | |
| 152 } | |
| 153 }; | |
| 154 | |
| 155 | |
| 156 bool LayerWidget::LookupLayer(size_t& index /* out */, | |
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157 const ILayerSource& layer) const |
| 66 | 158 { |
| 159 LayersIndex::const_iterator found = layersIndex_.find(&layer); | |
| 160 | |
| 161 if (found == layersIndex_.end()) | |
| 162 { | |
| 163 return false; | |
| 164 } | |
| 165 else | |
| 166 { | |
| 167 index = found->second; | |
| 168 assert(index < layers_.size() && | |
| 169 layers_[index] == &layer); | |
| 170 return true; | |
| 171 } | |
| 172 } | |
| 173 | |
| 85 | 174 |
| 175 bool LayerWidget::GetAndFixExtent(double& x1, | |
| 176 double& y1, | |
| 177 double& x2, | |
| 178 double& y2, | |
| 179 ILayerSource& source) const | |
| 180 { | |
| 181 if (source.GetExtent(x1, y1, x2, y2, slice_)) | |
| 182 { | |
| 183 if (x1 > x2) | |
| 184 { | |
| 185 std::swap(x1, x2); | |
| 186 } | |
| 187 | |
| 188 if (y1 > y2) | |
| 189 { | |
| 190 std::swap(y1, y2); | |
| 191 } | |
| 192 | |
| 193 return true; | |
| 194 } | |
| 195 else | |
| 196 { | |
| 197 return false; | |
| 198 } | |
| 199 } | |
| 200 | |
| 66 | 201 |
| 202 void LayerWidget::GetSceneExtent(double& x1, | |
| 203 double& y1, | |
| 204 double& x2, | |
| 205 double& y2) | |
| 206 { | |
| 207 bool first = true; | |
| 208 | |
| 209 for (size_t i = 0; i < layers_.size(); i++) | |
| 210 { | |
| 211 double ax, ay, bx, by; | |
| 212 | |
| 213 assert(layers_[i] != NULL); | |
| 85 | 214 if (GetAndFixExtent(ax, ay, bx, by, *layers_[i])) |
| 66 | 215 { |
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216 LOG(INFO) << "Extent of layer " << i << ": (" << ax << "," << ay |
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217 << ")->(" << bx << "," << by << ")"; |
| 66 | 218 |
| 219 if (first) | |
| 220 { | |
| 221 x1 = ax; | |
| 222 y1 = ay; | |
| 223 x2 = bx; | |
| 224 y2 = by; | |
| 225 first = false; | |
| 226 } | |
| 227 else | |
| 228 { | |
| 229 x1 = std::min(x1, ax); | |
| 230 y1 = std::min(y1, ay); | |
| 231 x2 = std::max(x2, bx); | |
| 232 y2 = std::max(y2, by); | |
| 233 } | |
| 234 } | |
| 235 } | |
| 236 | |
| 237 if (first) | |
| 238 { | |
| 239 // Set a default extent of (-1,-1) -> (0,0) | |
| 240 x1 = -1; | |
| 241 y1 = -1; | |
| 242 x2 = 1; | |
| 243 y2 = 1; | |
| 244 } | |
| 245 | |
| 246 // Ensure the extent is non-empty | |
| 247 if (x1 >= x2) | |
| 248 { | |
| 249 double tmp = x1; | |
| 250 x1 = tmp - 0.5; | |
| 251 x2 = tmp + 0.5; | |
| 252 } | |
| 253 | |
| 254 if (y1 >= y2) | |
| 255 { | |
| 256 double tmp = y1; | |
| 257 y1 = tmp - 0.5; | |
| 258 y2 = tmp + 0.5; | |
| 259 } | |
| 260 } | |
| 261 | |
| 262 | |
| 263 bool LayerWidget::RenderScene(CairoContext& context, | |
| 264 const ViewportGeometry& view) | |
| 265 { | |
| 266 if (currentScene_.get() != NULL) | |
| 267 { | |
| 268 return currentScene_->RenderScene(context, view); | |
| 269 } | |
| 270 else | |
| 271 { | |
| 272 return true; | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 | |
| 277 void LayerWidget::ResetPendingScene() | |
| 278 { | |
| 279 pendingScene_.reset(new Scene(slice_, layers_.size())); | |
| 280 } | |
| 281 | |
| 282 | |
| 283 void LayerWidget::UpdateLayer(size_t index, | |
| 284 ILayerRenderer* renderer, | |
| 77 | 285 const Slice& slice) |
| 66 | 286 { |
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287 LOG(INFO) << "Updating layer " << index; |
| 66 | 288 |
| 289 std::auto_ptr<ILayerRenderer> tmp(renderer); | |
| 290 | |
| 291 if (renderer == NULL) | |
| 292 { | |
| 293 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 294 } | |
| 295 | |
| 296 if (index >= layers_.size()) | |
| 297 { | |
| 298 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 299 } | |
| 300 | |
| 301 assert(layers_.size() == styles_.size()); | |
| 302 renderer->SetLayerStyle(styles_[index]); | |
| 303 | |
| 304 if (currentScene_.get() != NULL && | |
| 78 | 305 slice.ContainsPlane(currentScene_->GetSlice())) |
| 66 | 306 { |
| 307 currentScene_->SetLayer(index, tmp.release()); | |
| 308 NotifyChange(); | |
| 309 } | |
| 310 else if (pendingScene_.get() != NULL && | |
| 78 | 311 slice.ContainsPlane(pendingScene_->GetSlice())) |
| 66 | 312 { |
| 313 pendingScene_->SetLayer(index, tmp.release()); | |
| 314 | |
| 315 if (currentScene_.get() == NULL || | |
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316 !currentScene_->IsComplete() || |
| 66 | 317 pendingScene_->IsComplete()) |
| 318 { | |
| 319 currentScene_ = pendingScene_; | |
| 320 NotifyChange(); | |
| 321 } | |
| 322 } | |
| 323 } | |
| 324 | |
| 325 | |
| 326 LayerWidget::LayerWidget() : | |
| 78 | 327 started_(false) |
| 66 | 328 { |
| 329 SetBackgroundCleared(true); | |
| 330 } | |
| 331 | |
| 332 | |
| 333 LayerWidget::~LayerWidget() | |
| 334 { | |
| 335 for (size_t i = 0; i < layers_.size(); i++) | |
| 336 { | |
| 337 delete layers_[i]; | |
| 338 } | |
| 339 } | |
| 340 | |
| 341 | |
| 342 size_t LayerWidget::AddLayer(ILayerSource* layer) // Takes ownership | |
| 343 { | |
| 344 if (layer == NULL) | |
| 345 { | |
| 346 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 347 } | |
| 348 | |
| 349 size_t index = layers_.size(); | |
| 350 layers_.push_back(layer); | |
| 351 styles_.push_back(RenderStyle()); | |
| 352 layersIndex_[layer] = index; | |
| 353 | |
| 354 ResetPendingScene(); | |
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355 layer->Register(*this); |
| 66 | 356 |
| 357 return index; | |
| 358 } | |
| 359 | |
| 360 | |
| 361 void LayerWidget::SetLayerStyle(size_t layer, | |
| 362 const RenderStyle& style) | |
| 363 { | |
| 364 if (layer >= layers_.size()) | |
| 365 { | |
| 366 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 367 } | |
| 368 | |
| 369 assert(layers_.size() == styles_.size()); | |
| 370 styles_[layer] = style; | |
| 371 | |
| 372 if (currentScene_.get() != NULL) | |
| 373 { | |
| 374 currentScene_->SetLayerStyle(layer, style); | |
| 375 } | |
| 376 | |
| 377 if (pendingScene_.get() != NULL) | |
| 378 { | |
| 379 pendingScene_->SetLayerStyle(layer, style); | |
| 380 } | |
| 381 | |
| 382 NotifyChange(); | |
| 383 } | |
| 384 | |
| 385 | |
| 78 | 386 void LayerWidget::SetSlice(const SliceGeometry& slice) |
| 66 | 387 { |
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388 LOG(INFO) << "Setting slice origin: (" << slice.GetOrigin()[0] |
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389 << "," << slice.GetOrigin()[1] |
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390 << "," << slice.GetOrigin()[2] << ")"; |
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391 |
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392 Slice displayedSlice(slice_, THIN_SLICE_THICKNESS); |
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393 |
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394 if (!displayedSlice.ContainsPlane(slice)) |
| 66 | 395 { |
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396 if (currentScene_.get() == NULL || |
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397 (pendingScene_.get() != NULL && |
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398 pendingScene_->IsComplete())) |
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399 { |
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400 currentScene_ = pendingScene_; |
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401 } |
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402 |
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403 slice_ = slice; |
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404 ResetPendingScene(); |
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405 |
| 92 | 406 InvalidateAllLayers(); // TODO Removing this line avoid loading twice the image in WASM |
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407 } |
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408 } |
| 66 | 409 |
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410 |
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411 void LayerWidget::NotifyGeometryReady(const ILayerSource& source) |
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412 { |
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413 size_t i; |
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414 if (LookupLayer(i, source)) |
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415 { |
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416 LOG(INFO) << "Geometry ready for layer " << i; |
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417 layers_[i]->ScheduleLayerCreation(slice_); |
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418 } |
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419 } |
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420 |
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421 |
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422 void LayerWidget::NotifyGeometryError(const ILayerSource& source) |
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423 { |
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424 LOG(ERROR) << "Cannot get geometry"; |
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425 } |
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426 |
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427 |
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428 void LayerWidget::InvalidateAllLayers() |
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429 { |
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430 for (size_t i = 0; i < layers_.size(); i++) |
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431 { |
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432 assert(layers_[i] != NULL); |
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433 layers_[i]->ScheduleLayerCreation(slice_); |
| 66 | 434 } |
| 435 } | |
| 436 | |
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437 |
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438 void LayerWidget::InvalidateLayer(size_t layer) |
| 66 | 439 { |
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440 if (layer >= layers_.size()) |
| 83 | 441 { |
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442 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
| 83 | 443 } |
| 66 | 444 |
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445 assert(layers_[layer] != NULL); |
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446 layers_[layer]->ScheduleLayerCreation(slice_); |
| 77 | 447 } |
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448 |
| 77 | 449 |
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450 void LayerWidget::NotifyContentChange(const ILayerSource& source) |
| 66 | 451 { |
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452 size_t index; |
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453 if (LookupLayer(index, source)) |
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454 { |
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455 layers_[index]->ScheduleLayerCreation(slice_); |
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456 } |
| 66 | 457 } |
| 458 | |
| 459 | |
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460 void LayerWidget::NotifySliceChange(const ILayerSource& source, |
| 77 | 461 const Slice& slice) |
| 66 | 462 { |
| 77 | 463 if (slice.ContainsPlane(slice_)) |
| 66 | 464 { |
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465 size_t index; |
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466 if (LookupLayer(index, source)) |
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467 { |
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468 layers_[index]->ScheduleLayerCreation(slice_); |
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469 } |
| 66 | 470 } |
| 471 } | |
| 472 | |
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473 |
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474 void LayerWidget::NotifyLayerReady(std::auto_ptr<ILayerRenderer>& renderer, |
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475 const ILayerSource& source, |
| 77 | 476 const Slice& slice) |
| 66 | 477 { |
| 478 size_t index; | |
| 85 | 479 if (LookupLayer(index, source) && |
| 480 slice.ContainsPlane(slice_)) // Whether the slice comes from an older request | |
| 66 | 481 { |
| 77 | 482 LOG(INFO) << "Renderer ready for layer " << index; |
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483 UpdateLayer(index, renderer.release(), slice); |
| 66 | 484 } |
| 485 } | |
| 486 | |
| 487 | |
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488 void LayerWidget::NotifyLayerError(const ILayerSource& source, |
| 85 | 489 const SliceGeometry& slice) |
| 66 | 490 { |
| 85 | 491 size_t index; |
| 492 | |
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493 Slice expected(slice_, THIN_SLICE_THICKNESS); |
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494 |
| 85 | 495 if (LookupLayer(index, source) && |
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496 expected.ContainsPlane(slice)) // Whether the slice comes from an older request |
| 85 | 497 { |
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498 LOG(INFO) << "Unable to load a slice from layer " << index; |
| 85 | 499 |
| 500 double x1, y1, x2, y2; | |
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501 if (GetAndFixExtent(x1, y1, x2, y2, *layers_[index])) |
| 85 | 502 { |
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503 printf("**%d** %f %f %f %f\n", index, x1, y1, x2, y2); |
| 85 | 504 UpdateLayer(index, new MissingLayerRenderer(x1, y1, x2, y2), Slice(slice, THIN_SLICE_THICKNESS)); |
| 505 } | |
| 506 } | |
| 66 | 507 } |
| 508 } |