Mercurial > hg > orthanc-stone
annotate Framework/Radiography/RadiographyWidget.cpp @ 428:751fb354149e am-vsol-upgrade
ability to change the scene of the RadiographyWidget
| author | am@osimis.io |
|---|---|
| date | Wed, 28 Nov 2018 10:44:28 +0100 |
| parents | 18b707fb8620 |
| children | 4eb96c6b4e96 |
| rev | line source |
|---|---|
| 413 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2018 Osimis S.A., 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 "RadiographyWidget.h" | |
| 23 | |
| 24 #include <Core/Images/Image.h> | |
| 25 | |
| 26 | |
| 27 namespace OrthancStone | |
| 28 { | |
| 29 bool RadiographyWidget::RenderInternal(unsigned int width, | |
| 30 unsigned int height, | |
| 31 ImageInterpolation interpolation) | |
| 32 { | |
| 33 float windowCenter, windowWidth; | |
|
428
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
34 scene_->GetWindowingWithDefault(windowCenter, windowWidth); |
| 413 | 35 |
| 36 float x0 = windowCenter - windowWidth / 2.0f; | |
| 37 float x1 = windowCenter + windowWidth / 2.0f; | |
| 38 | |
| 39 if (windowWidth <= 0.001f) // Avoid division by zero at (*) | |
| 40 { | |
| 41 return false; | |
| 42 } | |
| 43 else | |
| 44 { | |
| 45 if (floatBuffer_.get() == NULL || | |
| 46 floatBuffer_->GetWidth() != width || | |
| 47 floatBuffer_->GetHeight() != height) | |
| 48 { | |
| 49 floatBuffer_.reset(new Orthanc::Image(Orthanc::PixelFormat_Float32, width, height, false)); | |
| 50 } | |
| 51 | |
| 52 if (cairoBuffer_.get() == NULL || | |
| 53 cairoBuffer_->GetWidth() != width || | |
| 54 cairoBuffer_->GetHeight() != height) | |
| 55 { | |
| 56 cairoBuffer_.reset(new CairoSurface(width, height)); | |
| 57 } | |
| 58 | |
|
428
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
59 scene_->Render(*floatBuffer_, GetView().GetMatrix(), interpolation); |
| 413 | 60 |
| 61 // Conversion from Float32 to BGRA32 (cairo). Very similar to | |
| 62 // GrayscaleFrameRenderer => TODO MERGE? | |
| 63 | |
| 64 Orthanc::ImageAccessor target; | |
| 65 cairoBuffer_->GetWriteableAccessor(target); | |
| 66 | |
| 67 float scaling = 255.0f / (x1 - x0); | |
| 68 | |
| 69 for (unsigned int y = 0; y < height; y++) | |
| 70 { | |
| 71 const float* p = reinterpret_cast<const float*>(floatBuffer_->GetConstRow(y)); | |
| 72 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); | |
| 73 | |
| 74 for (unsigned int x = 0; x < width; x++, p++, q += 4) | |
| 75 { | |
| 76 uint8_t v = 0; | |
| 77 if (*p >= x1) | |
| 78 { | |
| 79 v = 255; | |
| 80 } | |
| 81 else if (*p <= x0) | |
| 82 { | |
| 83 v = 0; | |
| 84 } | |
| 85 else | |
| 86 { | |
| 87 // https://en.wikipedia.org/wiki/Linear_interpolation | |
| 88 v = static_cast<uint8_t>(scaling * (*p - x0)); // (*) | |
| 89 } | |
| 90 | |
| 91 if (invert_) | |
| 92 { | |
| 93 v = 255 - v; | |
| 94 } | |
| 95 | |
| 96 q[0] = v; | |
| 97 q[1] = v; | |
| 98 q[2] = v; | |
| 99 q[3] = 255; | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 return true; | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 | |
| 108 bool RadiographyWidget::RenderScene(CairoContext& context, | |
| 109 const ViewportGeometry& view) | |
| 110 { | |
| 111 cairo_t* cr = context.GetObject(); | |
| 112 | |
| 113 if (RenderInternal(context.GetWidth(), context.GetHeight(), interpolation_)) | |
| 114 { | |
| 115 // https://www.cairographics.org/FAQ/#paint_from_a_surface | |
| 116 cairo_save(cr); | |
| 117 cairo_identity_matrix(cr); | |
| 118 cairo_set_source_surface(cr, cairoBuffer_->GetObject(), 0, 0); | |
| 119 cairo_paint(cr); | |
| 120 cairo_restore(cr); | |
| 121 } | |
| 122 else | |
| 123 { | |
| 124 // https://www.cairographics.org/FAQ/#clear_a_surface | |
| 125 context.SetSourceColor(0, 0, 0); | |
| 126 cairo_paint(cr); | |
| 127 } | |
| 128 | |
| 129 if (hasSelection_) | |
| 130 { | |
|
428
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
131 scene_->DrawBorder(context, selectedLayer_, view.GetZoom()); |
| 413 | 132 } |
| 133 | |
| 134 return true; | |
| 135 } | |
| 136 | |
| 137 | |
| 138 RadiographyWidget::RadiographyWidget(MessageBroker& broker, | |
|
428
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
139 boost::shared_ptr<RadiographyScene> scene, |
| 413 | 140 const std::string& name) : |
| 141 WorldSceneWidget(name), | |
| 142 IObserver(broker), | |
| 143 invert_(false), | |
| 144 interpolation_(ImageInterpolation_Nearest), | |
| 145 hasSelection_(false), | |
| 146 selectedLayer_(0) // Dummy initialization | |
| 147 { | |
|
428
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
148 SetScene(scene); |
| 413 | 149 } |
| 150 | |
| 151 | |
| 152 void RadiographyWidget::Select(size_t layer) | |
| 153 { | |
| 154 hasSelection_ = true; | |
| 155 selectedLayer_ = layer; | |
| 156 } | |
| 157 | |
| 158 | |
| 159 bool RadiographyWidget::LookupSelectedLayer(size_t& layer) | |
| 160 { | |
| 161 if (hasSelection_) | |
| 162 { | |
| 163 layer = selectedLayer_; | |
| 164 return true; | |
| 165 } | |
| 166 else | |
| 167 { | |
| 168 return false; | |
| 169 } | |
| 170 } | |
| 171 | |
| 172 | |
| 173 void RadiographyWidget::OnGeometryChanged(const RadiographyScene::GeometryChangedMessage& message) | |
| 174 { | |
| 175 LOG(INFO) << "Geometry has changed"; | |
| 176 FitContent(); | |
| 177 } | |
| 178 | |
| 179 | |
| 180 void RadiographyWidget::OnContentChanged(const RadiographyScene::ContentChangedMessage& message) | |
| 181 { | |
| 182 LOG(INFO) << "Content has changed"; | |
| 183 NotifyContentChanged(); | |
| 184 } | |
| 185 | |
| 186 | |
| 187 void RadiographyWidget::SetInvert(bool invert) | |
| 188 { | |
| 189 if (invert_ != invert) | |
| 190 { | |
| 191 invert_ = invert; | |
| 192 NotifyContentChanged(); | |
| 193 } | |
| 194 } | |
| 195 | |
| 196 | |
| 197 void RadiographyWidget::SwitchInvert() | |
| 198 { | |
| 199 invert_ = !invert_; | |
| 200 NotifyContentChanged(); | |
| 201 } | |
| 202 | |
| 203 | |
| 204 void RadiographyWidget::SetInterpolation(ImageInterpolation interpolation) | |
| 205 { | |
| 206 if (interpolation_ != interpolation) | |
| 207 { | |
| 208 interpolation_ = interpolation; | |
| 209 NotifyContentChanged(); | |
| 210 } | |
| 211 } | |
|
428
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
212 |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
213 void RadiographyWidget::SetScene(boost::shared_ptr<RadiographyScene> scene) |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
214 { |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
215 if (scene_ != NULL) |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
216 { |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
217 scene_->Unregister(this); |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
218 } |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
219 |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
220 scene_ = scene; |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
221 |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
222 scene_->RegisterObserverCallback( |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
223 new Callable<RadiographyWidget, RadiographyScene::GeometryChangedMessage> |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
224 (*this, &RadiographyWidget::OnGeometryChanged)); |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
225 |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
226 scene_->RegisterObserverCallback( |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
227 new Callable<RadiographyWidget, RadiographyScene::ContentChangedMessage> |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
228 (*this, &RadiographyWidget::OnContentChanged)); |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
229 |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
230 // force redraw |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
231 FitContent(); |
|
751fb354149e
ability to change the scene of the RadiographyWidget
am@osimis.io
parents:
413
diff
changeset
|
232 } |
| 413 | 233 } |