Mercurial > hg > orthanc-stone
annotate Framework/Radiography/RadiographyWidget.cpp @ 492:64d90190a08c am-touch-events
template GetLayer
author | Alain Mazy <alain@mazy.be> |
---|---|
date | Wed, 20 Feb 2019 20:57:43 +0100 |
parents | a750f11892ec |
children | 11fa6f00e33c |
rev | line source |
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413 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
439 | 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium |
413 | 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 "RadiographyWidget.h" | |
23 | |
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24 #include <Core/OrthancException.h> |
413 | 25 #include <Core/Images/Image.h> |
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26 #include <Core/Images/ImageProcessing.h> |
413 | 27 |
492 | 28 #include "RadiographyMaskLayer.h" |
413 | 29 |
30 namespace OrthancStone | |
31 { | |
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32 |
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33 bool RadiographyWidget::IsInvertedInternal() const |
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34 { |
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35 return (scene_->GetPreferredPhotomotricDisplayMode() == PhotometricDisplayMode_Monochrome1) ^ invert_; // MONOCHROME1 images must be inverted and the user can invert the image too -> XOR the two |
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36 } |
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37 |
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38 void RadiographyWidget::RenderBackground(Orthanc::ImageAccessor& image, float minValue, float maxValue) |
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39 { |
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40 // wipe background before rendering |
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41 float backgroundValue = minValue; |
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42 |
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43 switch (scene_->GetPreferredPhotomotricDisplayMode()) |
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44 { |
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45 case PhotometricDisplayMode_Monochrome1: |
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46 case PhotometricDisplayMode_Default: |
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47 if (IsInvertedInternal()) |
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48 backgroundValue = maxValue; |
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49 else |
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50 backgroundValue = minValue; |
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51 break; |
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52 case PhotometricDisplayMode_Monochrome2: |
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53 if (IsInvertedInternal()) |
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54 backgroundValue = minValue; |
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55 else |
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56 backgroundValue = maxValue; |
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57 break; |
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58 default: |
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59 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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60 } |
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61 |
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62 Orthanc::ImageProcessing::Set(image, backgroundValue); |
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63 } |
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64 |
413 | 65 bool RadiographyWidget::RenderInternal(unsigned int width, |
66 unsigned int height, | |
67 ImageInterpolation interpolation) | |
68 { | |
69 float windowCenter, windowWidth; | |
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70 scene_->GetWindowingWithDefault(windowCenter, windowWidth); |
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71 |
413 | 72 float x0 = windowCenter - windowWidth / 2.0f; |
73 float x1 = windowCenter + windowWidth / 2.0f; | |
74 | |
75 if (windowWidth <= 0.001f) // Avoid division by zero at (*) | |
76 { | |
77 return false; | |
78 } | |
79 else | |
80 { | |
81 if (floatBuffer_.get() == NULL || | |
82 floatBuffer_->GetWidth() != width || | |
83 floatBuffer_->GetHeight() != height) | |
84 { | |
85 floatBuffer_.reset(new Orthanc::Image(Orthanc::PixelFormat_Float32, width, height, false)); | |
86 } | |
87 | |
88 if (cairoBuffer_.get() == NULL || | |
89 cairoBuffer_->GetWidth() != width || | |
90 cairoBuffer_->GetHeight() != height) | |
91 { | |
92 cairoBuffer_.reset(new CairoSurface(width, height)); | |
93 } | |
94 | |
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95 RenderBackground(*floatBuffer_, x0, x1); |
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96 |
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97 scene_->Render(*floatBuffer_, GetView().GetMatrix(), interpolation); |
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98 |
413 | 99 // Conversion from Float32 to BGRA32 (cairo). Very similar to |
100 // GrayscaleFrameRenderer => TODO MERGE? | |
101 | |
102 Orthanc::ImageAccessor target; | |
103 cairoBuffer_->GetWriteableAccessor(target); | |
104 | |
105 float scaling = 255.0f / (x1 - x0); | |
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106 |
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107 bool invert = IsInvertedInternal(); |
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108 |
413 | 109 for (unsigned int y = 0; y < height; y++) |
110 { | |
111 const float* p = reinterpret_cast<const float*>(floatBuffer_->GetConstRow(y)); | |
112 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); | |
113 | |
114 for (unsigned int x = 0; x < width; x++, p++, q += 4) | |
115 { | |
116 uint8_t v = 0; | |
117 if (*p >= x1) | |
118 { | |
119 v = 255; | |
120 } | |
121 else if (*p <= x0) | |
122 { | |
123 v = 0; | |
124 } | |
125 else | |
126 { | |
127 // https://en.wikipedia.org/wiki/Linear_interpolation | |
128 v = static_cast<uint8_t>(scaling * (*p - x0)); // (*) | |
129 } | |
130 | |
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131 if (invert) |
413 | 132 { |
133 v = 255 - v; | |
134 } | |
135 | |
136 q[0] = v; | |
137 q[1] = v; | |
138 q[2] = v; | |
139 q[3] = 255; | |
140 } | |
141 } | |
142 | |
143 return true; | |
144 } | |
145 } | |
146 | |
147 | |
148 bool RadiographyWidget::RenderScene(CairoContext& context, | |
149 const ViewportGeometry& view) | |
150 { | |
151 cairo_t* cr = context.GetObject(); | |
152 | |
153 if (RenderInternal(context.GetWidth(), context.GetHeight(), interpolation_)) | |
154 { | |
155 // https://www.cairographics.org/FAQ/#paint_from_a_surface | |
156 cairo_save(cr); | |
157 cairo_identity_matrix(cr); | |
158 cairo_set_source_surface(cr, cairoBuffer_->GetObject(), 0, 0); | |
159 cairo_paint(cr); | |
160 cairo_restore(cr); | |
161 } | |
162 else | |
163 { | |
164 // https://www.cairographics.org/FAQ/#clear_a_surface | |
165 context.SetSourceColor(0, 0, 0); | |
166 cairo_paint(cr); | |
167 } | |
168 | |
169 if (hasSelection_) | |
170 { | |
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171 scene_->DrawBorder(context, selectedLayer_, view.GetZoom()); |
413 | 172 } |
173 | |
174 return true; | |
175 } | |
176 | |
177 | |
178 RadiographyWidget::RadiographyWidget(MessageBroker& broker, | |
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179 boost::shared_ptr<RadiographyScene> scene, |
413 | 180 const std::string& name) : |
181 WorldSceneWidget(name), | |
182 IObserver(broker), | |
183 invert_(false), | |
184 interpolation_(ImageInterpolation_Nearest), | |
185 hasSelection_(false), | |
186 selectedLayer_(0) // Dummy initialization | |
187 { | |
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188 SetScene(scene); |
413 | 189 } |
190 | |
191 | |
192 void RadiographyWidget::Select(size_t layer) | |
193 { | |
194 hasSelection_ = true; | |
195 selectedLayer_ = layer; | |
196 } | |
197 | |
492 | 198 bool RadiographyWidget::SelectMaskLayer(size_t index) |
199 { | |
200 std::vector<size_t> layerIndexes; | |
201 size_t count = 0; | |
202 scene_->GetLayersIndexes(layerIndexes); | |
203 | |
204 for (size_t i = 0; i < layerIndexes.size(); ++i) | |
205 { | |
206 const RadiographyMaskLayer* maskLayer = dynamic_cast<const RadiographyMaskLayer*>(&(scene_->GetLayer(layerIndexes[i]))); | |
207 if (maskLayer != NULL) | |
208 { | |
209 if (count == index) | |
210 { | |
211 Select(layerIndexes[i]); | |
212 return true; | |
213 } | |
214 count++; | |
215 } | |
216 } | |
217 | |
218 return false; | |
219 } | |
413 | 220 |
221 bool RadiographyWidget::LookupSelectedLayer(size_t& layer) | |
222 { | |
223 if (hasSelection_) | |
224 { | |
225 layer = selectedLayer_; | |
226 return true; | |
227 } | |
228 else | |
229 { | |
230 return false; | |
231 } | |
232 } | |
233 | |
234 | |
235 void RadiographyWidget::OnGeometryChanged(const RadiographyScene::GeometryChangedMessage& message) | |
236 { | |
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237 LOG(INFO) << "Scene geometry has changed"; |
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238 |
413 | 239 FitContent(); |
240 } | |
241 | |
242 | |
243 void RadiographyWidget::OnContentChanged(const RadiographyScene::ContentChangedMessage& message) | |
244 { | |
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245 LOG(INFO) << "Scene content has changed"; |
413 | 246 NotifyContentChanged(); |
247 } | |
248 | |
249 | |
250 void RadiographyWidget::SetInvert(bool invert) | |
251 { | |
252 if (invert_ != invert) | |
253 { | |
254 invert_ = invert; | |
255 NotifyContentChanged(); | |
256 } | |
257 } | |
258 | |
259 | |
260 void RadiographyWidget::SwitchInvert() | |
261 { | |
262 invert_ = !invert_; | |
263 NotifyContentChanged(); | |
264 } | |
265 | |
266 | |
267 void RadiographyWidget::SetInterpolation(ImageInterpolation interpolation) | |
268 { | |
269 if (interpolation_ != interpolation) | |
270 { | |
271 interpolation_ = interpolation; | |
272 NotifyContentChanged(); | |
273 } | |
274 } | |
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275 |
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276 void RadiographyWidget::SetScene(boost::shared_ptr<RadiographyScene> scene) |
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277 { |
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278 if (scene_ != NULL) |
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279 { |
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280 scene_->Unregister(this); |
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281 } |
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282 |
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283 scene_ = scene; |
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284 |
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285 scene_->RegisterObserverCallback( |
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286 new Callable<RadiographyWidget, RadiographyScene::GeometryChangedMessage> |
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287 (*this, &RadiographyWidget::OnGeometryChanged)); |
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288 |
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289 scene_->RegisterObserverCallback( |
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290 new Callable<RadiographyWidget, RadiographyScene::ContentChangedMessage> |
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291 (*this, &RadiographyWidget::OnContentChanged)); |
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292 |
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293 NotifyContentChanged(); |
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294 |
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295 // force redraw |
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296 FitContent(); |
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297 } |
413 | 298 } |