Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayerWidget.cpp @ 90:64e60018943f wasm
fix and observer refactoring
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 29 May 2017 11:04:18 +0200 |
parents | f244018a4e4b |
children | 961ee171d933 |
rev | line source |
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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 | |
92 bool IsComplete() const | |
93 { | |
94 return countMissing_ == 0; | |
95 } | |
96 | |
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97 unsigned int GetCountMissing() const |
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98 { |
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99 return countMissing_; |
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100 } |
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101 |
66 | 102 bool RenderScene(CairoContext& context, |
103 const ViewportGeometry& view) | |
104 { | |
105 bool fullQuality = true; | |
106 | |
107 for (size_t i = 0; i < renderers_.size(); i++) | |
108 { | |
109 if (renderers_[i] != NULL && | |
77 | 110 !renderers_[i]->RenderLayer(context, view, slice_)) |
66 | 111 { |
112 return false; | |
113 } | |
114 | |
115 if (renderers_[i] != NULL && | |
116 !renderers_[i]->IsFullQuality()) | |
117 { | |
118 fullQuality = false; | |
119 } | |
120 } | |
121 | |
122 if (!fullQuality) | |
123 { | |
124 double x, y; | |
125 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
126 | |
127 cairo_t *cr = context.GetObject(); | |
128 cairo_translate(cr, x, y); | |
129 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); | |
130 cairo_set_line_width(cr, 2.0 / view.GetZoom()); | |
131 cairo_set_source_rgb(cr, 1, 1, 1); | |
132 cairo_stroke_preserve(cr); | |
133 cairo_set_source_rgb(cr, 1, 0, 0); | |
134 cairo_fill(cr); | |
135 } | |
136 | |
137 return true; | |
138 } | |
139 | |
140 void SetLayerStyle(size_t index, | |
141 const RenderStyle& style) | |
142 { | |
143 if (renderers_[index] != NULL) | |
144 { | |
145 renderers_[index]->SetLayerStyle(style); | |
146 } | |
147 } | |
148 }; | |
149 | |
150 | |
151 bool LayerWidget::LookupLayer(size_t& index /* out */, | |
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152 const ILayerSource& layer) const |
66 | 153 { |
154 LayersIndex::const_iterator found = layersIndex_.find(&layer); | |
155 | |
156 if (found == layersIndex_.end()) | |
157 { | |
158 return false; | |
159 } | |
160 else | |
161 { | |
162 index = found->second; | |
163 assert(index < layers_.size() && | |
164 layers_[index] == &layer); | |
165 return true; | |
166 } | |
167 } | |
168 | |
85 | 169 |
170 bool LayerWidget::GetAndFixExtent(double& x1, | |
171 double& y1, | |
172 double& x2, | |
173 double& y2, | |
174 ILayerSource& source) const | |
175 { | |
176 if (source.GetExtent(x1, y1, x2, y2, slice_)) | |
177 { | |
178 if (x1 > x2) | |
179 { | |
180 std::swap(x1, x2); | |
181 } | |
182 | |
183 if (y1 > y2) | |
184 { | |
185 std::swap(y1, y2); | |
186 } | |
187 | |
188 return true; | |
189 } | |
190 else | |
191 { | |
192 return false; | |
193 } | |
194 } | |
195 | |
66 | 196 |
197 void LayerWidget::GetSceneExtent(double& x1, | |
198 double& y1, | |
199 double& x2, | |
200 double& y2) | |
201 { | |
202 bool first = true; | |
203 | |
204 for (size_t i = 0; i < layers_.size(); i++) | |
205 { | |
206 double ax, ay, bx, by; | |
207 | |
208 assert(layers_[i] != NULL); | |
85 | 209 if (GetAndFixExtent(ax, ay, bx, by, *layers_[i])) |
66 | 210 { |
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211 LOG(INFO) << "Extent of layer " << i << ": (" << ax << "," << ay << ")->(" << bx << "," << by << ")"; |
66 | 212 |
213 if (first) | |
214 { | |
215 x1 = ax; | |
216 y1 = ay; | |
217 x2 = bx; | |
218 y2 = by; | |
219 first = false; | |
220 } | |
221 else | |
222 { | |
223 x1 = std::min(x1, ax); | |
224 y1 = std::min(y1, ay); | |
225 x2 = std::max(x2, bx); | |
226 y2 = std::max(y2, by); | |
227 } | |
228 } | |
229 } | |
230 | |
231 if (first) | |
232 { | |
233 // Set a default extent of (-1,-1) -> (0,0) | |
234 x1 = -1; | |
235 y1 = -1; | |
236 x2 = 1; | |
237 y2 = 1; | |
238 } | |
239 | |
240 // Ensure the extent is non-empty | |
241 if (x1 >= x2) | |
242 { | |
243 double tmp = x1; | |
244 x1 = tmp - 0.5; | |
245 x2 = tmp + 0.5; | |
246 } | |
247 | |
248 if (y1 >= y2) | |
249 { | |
250 double tmp = y1; | |
251 y1 = tmp - 0.5; | |
252 y2 = tmp + 0.5; | |
253 } | |
254 } | |
255 | |
256 | |
257 bool LayerWidget::RenderScene(CairoContext& context, | |
258 const ViewportGeometry& view) | |
259 { | |
260 if (currentScene_.get() != NULL) | |
261 { | |
262 return currentScene_->RenderScene(context, view); | |
263 } | |
264 else | |
265 { | |
266 return true; | |
267 } | |
268 } | |
269 | |
270 | |
271 void LayerWidget::ResetPendingScene() | |
272 { | |
273 pendingScene_.reset(new Scene(slice_, layers_.size())); | |
274 } | |
275 | |
276 | |
277 void LayerWidget::UpdateLayer(size_t index, | |
278 ILayerRenderer* renderer, | |
77 | 279 const Slice& slice) |
66 | 280 { |
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281 LOG(INFO) << "Updating layer " << index; |
66 | 282 |
283 std::auto_ptr<ILayerRenderer> tmp(renderer); | |
284 | |
285 if (renderer == NULL) | |
286 { | |
287 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
288 } | |
289 | |
290 if (index >= layers_.size()) | |
291 { | |
292 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
293 } | |
294 | |
295 assert(layers_.size() == styles_.size()); | |
296 renderer->SetLayerStyle(styles_[index]); | |
297 | |
298 if (currentScene_.get() != NULL && | |
78 | 299 slice.ContainsPlane(currentScene_->GetSlice())) |
66 | 300 { |
301 currentScene_->SetLayer(index, tmp.release()); | |
302 NotifyChange(); | |
303 } | |
304 else if (pendingScene_.get() != NULL && | |
78 | 305 slice.ContainsPlane(pendingScene_->GetSlice())) |
66 | 306 { |
307 pendingScene_->SetLayer(index, tmp.release()); | |
308 | |
309 if (currentScene_.get() == NULL || | |
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310 !currentScene_->IsComplete() || |
66 | 311 pendingScene_->IsComplete()) |
312 { | |
313 currentScene_ = pendingScene_; | |
314 NotifyChange(); | |
315 } | |
316 } | |
317 } | |
318 | |
319 | |
320 LayerWidget::LayerWidget() : | |
78 | 321 started_(false) |
66 | 322 { |
323 SetBackgroundCleared(true); | |
324 } | |
325 | |
326 | |
327 LayerWidget::~LayerWidget() | |
328 { | |
329 for (size_t i = 0; i < layers_.size(); i++) | |
330 { | |
331 delete layers_[i]; | |
332 } | |
333 } | |
334 | |
335 | |
336 size_t LayerWidget::AddLayer(ILayerSource* layer) // Takes ownership | |
337 { | |
338 if (layer == NULL) | |
339 { | |
340 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
341 } | |
342 | |
343 size_t index = layers_.size(); | |
344 layers_.push_back(layer); | |
345 styles_.push_back(RenderStyle()); | |
346 layersIndex_[layer] = index; | |
347 | |
348 ResetPendingScene(); | |
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349 layer->Register(*this); |
66 | 350 |
351 return index; | |
352 } | |
353 | |
354 | |
355 void LayerWidget::SetLayerStyle(size_t layer, | |
356 const RenderStyle& style) | |
357 { | |
358 if (layer >= layers_.size()) | |
359 { | |
360 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
361 } | |
362 | |
363 assert(layers_.size() == styles_.size()); | |
364 styles_[layer] = style; | |
365 | |
366 if (currentScene_.get() != NULL) | |
367 { | |
368 currentScene_->SetLayerStyle(layer, style); | |
369 } | |
370 | |
371 if (pendingScene_.get() != NULL) | |
372 { | |
373 pendingScene_->SetLayerStyle(layer, style); | |
374 } | |
375 | |
376 NotifyChange(); | |
377 } | |
378 | |
379 | |
78 | 380 void LayerWidget::SetSlice(const SliceGeometry& slice) |
66 | 381 { |
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382 Slice displayedSlice(slice_, THIN_SLICE_THICKNESS); |
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383 |
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384 if (!displayedSlice.ContainsPlane(slice)) |
66 | 385 { |
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386 if (currentScene_.get() == NULL || |
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387 (pendingScene_.get() != NULL && |
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388 pendingScene_->IsComplete())) |
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389 { |
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390 currentScene_ = pendingScene_; |
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391 } |
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392 |
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393 slice_ = slice; |
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394 ResetPendingScene(); |
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395 |
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396 InvalidateAllLayers(); |
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397 } |
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398 } |
66 | 399 |
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400 |
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401 void LayerWidget::NotifyGeometryReady(const ILayerSource& source) |
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402 { |
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403 size_t i; |
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404 if (LookupLayer(i, source)) |
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405 { |
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406 LOG(INFO) << "Geometry ready for layer " << i; |
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407 layers_[i]->ScheduleLayerCreation(slice_); |
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408 } |
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409 } |
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410 |
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411 |
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412 void LayerWidget::NotifyGeometryError(const ILayerSource& source) |
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413 { |
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414 LOG(ERROR) << "Cannot get geometry"; |
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415 } |
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416 |
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417 |
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418 void LayerWidget::InvalidateAllLayers() |
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419 { |
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420 for (size_t i = 0; i < layers_.size(); i++) |
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421 { |
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422 assert(layers_[i] != NULL); |
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423 layers_[i]->ScheduleLayerCreation(slice_); |
66 | 424 } |
425 } | |
426 | |
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427 |
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428 void LayerWidget::InvalidateLayer(size_t layer) |
66 | 429 { |
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430 if (layer >= layers_.size()) |
83 | 431 { |
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432 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
83 | 433 } |
66 | 434 |
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435 assert(layers_[layer] != NULL); |
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436 layers_[layer]->ScheduleLayerCreation(slice_); |
77 | 437 } |
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438 |
77 | 439 |
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440 void LayerWidget::NotifyContentChange(const ILayerSource& source) |
66 | 441 { |
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442 size_t index; |
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443 if (LookupLayer(index, source)) |
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444 { |
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445 layers_[index]->ScheduleLayerCreation(slice_); |
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446 } |
66 | 447 } |
448 | |
449 | |
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450 void LayerWidget::NotifySliceChange(const ILayerSource& source, |
77 | 451 const Slice& slice) |
66 | 452 { |
77 | 453 if (slice.ContainsPlane(slice_)) |
66 | 454 { |
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455 size_t index; |
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456 if (LookupLayer(index, source)) |
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457 { |
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458 layers_[index]->ScheduleLayerCreation(slice_); |
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459 } |
66 | 460 } |
461 } | |
462 | |
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463 |
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464 void LayerWidget::NotifyLayerReady(std::auto_ptr<ILayerRenderer>& renderer, |
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465 const ILayerSource& source, |
77 | 466 const Slice& slice) |
66 | 467 { |
468 size_t index; | |
85 | 469 if (LookupLayer(index, source) && |
470 slice.ContainsPlane(slice_)) // Whether the slice comes from an older request | |
66 | 471 { |
77 | 472 LOG(INFO) << "Renderer ready for layer " << index; |
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473 UpdateLayer(index, renderer.release(), slice); |
66 | 474 } |
475 } | |
476 | |
477 | |
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478 void LayerWidget::NotifyLayerError(const ILayerSource& source, |
85 | 479 const SliceGeometry& slice) |
66 | 480 { |
85 | 481 size_t index; |
482 | |
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483 Slice expected(slice_, THIN_SLICE_THICKNESS); |
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484 |
85 | 485 if (LookupLayer(index, source) && |
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486 expected.ContainsPlane(slice)) // Whether the slice comes from an older request |
85 | 487 { |
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488 LOG(INFO) << "Unable to load a slice from layer " << index; |
85 | 489 |
490 double x1, y1, x2, y2; | |
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491 if (GetAndFixExtent(x1, y1, x2, y2, *layers_[index])) |
85 | 492 { |
493 UpdateLayer(index, new MissingLayerRenderer(x1, y1, x2, y2), Slice(slice, THIN_SLICE_THICKNESS)); | |
494 } | |
495 } | |
66 | 496 } |
497 } |