Mercurial > hg > orthanc-stone

annotate Framework/Radiography/RadiographyWidget.cpp @ 448:cc47e6eaefb0 bgo-commands-codegen

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Fixed dummy change
author bgo-osimis
date Wed, 16 Jan 2019 21:08:38 +0100
parents a750f11892ec
children 64d90190a08c aaeec7be8fb7
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "RadiographyWidget.h"
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23
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24 #include <Core/OrthancException.h>
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25 #include <Core/Images/Image.h>
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26 #include <Core/Images/ImageProcessing.h>
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28
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29 namespace OrthancStone
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30 {
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31
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32 bool RadiographyWidget::IsInvertedInternal() const
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33 {
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34 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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35 }
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36
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37 void RadiographyWidget::RenderBackground(Orthanc::ImageAccessor& image, float minValue, float maxValue)
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38 {
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39 // wipe background before rendering
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40 float backgroundValue = minValue;
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41
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42 switch (scene_->GetPreferredPhotomotricDisplayMode())
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43 {
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44 case PhotometricDisplayMode_Monochrome1:
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45 case PhotometricDisplayMode_Default:
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46 if (IsInvertedInternal())
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47 backgroundValue = maxValue;
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48 else
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49 backgroundValue = minValue;
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50 break;
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51 case PhotometricDisplayMode_Monochrome2:
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52 if (IsInvertedInternal())
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53 backgroundValue = minValue;
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54 else
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55 backgroundValue = maxValue;
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56 break;
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57 default:
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58 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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59 }
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60
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61 Orthanc::ImageProcessing::Set(image, backgroundValue);
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62 }
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63
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64 bool RadiographyWidget::RenderInternal(unsigned int width,
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65 unsigned int height,
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66 ImageInterpolation interpolation)
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67 {
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68 float windowCenter, windowWidth;
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69 scene_->GetWindowingWithDefault(windowCenter, windowWidth);
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70
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71 float x0 = windowCenter - windowWidth / 2.0f;
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72 float x1 = windowCenter + windowWidth / 2.0f;
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73
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74 if (windowWidth <= 0.001f) // Avoid division by zero at (*)
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75 {
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76 return false;
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77 }
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78 else
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79 {
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80 if (floatBuffer_.get() == NULL ||
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81 floatBuffer_->GetWidth() != width ||
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82 floatBuffer_->GetHeight() != height)
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83 {
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84 floatBuffer_.reset(new Orthanc::Image(Orthanc::PixelFormat_Float32, width, height, false));
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85 }
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86
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87 if (cairoBuffer_.get() == NULL ||
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88 cairoBuffer_->GetWidth() != width ||
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89 cairoBuffer_->GetHeight() != height)
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90 {
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91 cairoBuffer_.reset(new CairoSurface(width, height));
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92 }
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93
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94 RenderBackground(*floatBuffer_, x0, x1);
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95
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96 scene_->Render(*floatBuffer_, GetView().GetMatrix(), interpolation);
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97
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98 // Conversion from Float32 to BGRA32 (cairo). Very similar to
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99 // GrayscaleFrameRenderer => TODO MERGE?
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100
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101 Orthanc::ImageAccessor target;
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102 cairoBuffer_->GetWriteableAccessor(target);
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103
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104 float scaling = 255.0f / (x1 - x0);
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105
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106 bool invert = IsInvertedInternal();
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107
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108 for (unsigned int y = 0; y < height; y++)
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109 {
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110 const float* p = reinterpret_cast<const float*>(floatBuffer_->GetConstRow(y));
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111 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y));
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112
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113 for (unsigned int x = 0; x < width; x++, p++, q += 4)
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114 {
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115 uint8_t v = 0;
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116 if (*p >= x1)
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117 {
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118 v = 255;
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119 }
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120 else if (*p <= x0)
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121 {
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122 v = 0;
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123 }
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124 else
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125 {
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126 // https://en.wikipedia.org/wiki/Linear_interpolation
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127 v = static_cast<uint8_t>(scaling * (*p - x0)); // (*)
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128 }
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129
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130 if (invert)
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131 {
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132 v = 255 - v;
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133 }
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134
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135 q[0] = v;
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136 q[1] = v;
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137 q[2] = v;
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138 q[3] = 255;
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139 }
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140 }
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141
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142 return true;
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143 }
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144 }
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145
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146
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147 bool RadiographyWidget::RenderScene(CairoContext& context,
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148 const ViewportGeometry& view)
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149 {
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150 cairo_t* cr = context.GetObject();
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151
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152 if (RenderInternal(context.GetWidth(), context.GetHeight(), interpolation_))
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153 {
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154 // https://www.cairographics.org/FAQ/#paint_from_a_surface
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155 cairo_save(cr);
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156 cairo_identity_matrix(cr);
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157 cairo_set_source_surface(cr, cairoBuffer_->GetObject(), 0, 0);
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158 cairo_paint(cr);
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159 cairo_restore(cr);
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160 }
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161 else
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162 {
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163 // https://www.cairographics.org/FAQ/#clear_a_surface
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164 context.SetSourceColor(0, 0, 0);
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165 cairo_paint(cr);
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166 }
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167
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168 if (hasSelection_)
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169 {
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170 scene_->DrawBorder(context, selectedLayer_, view.GetZoom());
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171 }
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172
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173 return true;
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174 }
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175
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176
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177 RadiographyWidget::RadiographyWidget(MessageBroker& broker,
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178 boost::shared_ptr<RadiographyScene> scene,
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179 const std::string& name) :
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180 WorldSceneWidget(name),
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181 IObserver(broker),
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182 invert_(false),
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183 interpolation_(ImageInterpolation_Nearest),
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184 hasSelection_(false),
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185 selectedLayer_(0) // Dummy initialization
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186 {
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187 SetScene(scene);
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188 }
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189
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190
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191 void RadiographyWidget::Select(size_t layer)
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192 {
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193 hasSelection_ = true;
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194 selectedLayer_ = layer;
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195 }
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196
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197
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198 bool RadiographyWidget::LookupSelectedLayer(size_t& layer)
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199 {
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200 if (hasSelection_)
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201 {
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202 layer = selectedLayer_;
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203 return true;
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204 }
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205 else
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206 {
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207 return false;
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208 }
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209 }
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210
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211
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212 void RadiographyWidget::OnGeometryChanged(const RadiographyScene::GeometryChangedMessage& message)
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213 {
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214 LOG(INFO) << "Scene geometry has changed";
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215
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216 FitContent();
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217 }
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218
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219
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220 void RadiographyWidget::OnContentChanged(const RadiographyScene::ContentChangedMessage& message)
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221 {
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222 LOG(INFO) << "Scene content has changed";
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223 NotifyContentChanged();
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224 }
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225
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226
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227 void RadiographyWidget::SetInvert(bool invert)
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228 {
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229 if (invert_ != invert)
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230 {
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231 invert_ = invert;
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232 NotifyContentChanged();
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233 }
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234 }
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235
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236
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237 void RadiographyWidget::SwitchInvert()
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238 {
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239 invert_ = !invert_;
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240 NotifyContentChanged();
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241 }
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242
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243
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244 void RadiographyWidget::SetInterpolation(ImageInterpolation interpolation)
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245 {
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246 if (interpolation_ != interpolation)
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247 {
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248 interpolation_ = interpolation;
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249 NotifyContentChanged();
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250 }
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251 }
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252
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253 void RadiographyWidget::SetScene(boost::shared_ptr<RadiographyScene> scene)
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254 {
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255 if (scene_ != NULL)
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256 {
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257 scene_->Unregister(this);
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258 }
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259
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260 scene_ = scene;
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261
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262 scene_->RegisterObserverCallback(
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263 new Callable<RadiographyWidget, RadiographyScene::GeometryChangedMessage>
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264 (*this, &RadiographyWidget::OnGeometryChanged));
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265
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266 scene_->RegisterObserverCallback(
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267 new Callable<RadiographyWidget, RadiographyScene::ContentChangedMessage>
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268 (*this, &RadiographyWidget::OnContentChanged));
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269
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270 NotifyContentChanged();
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271
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272 // force redraw
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273 FitContent();
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274 }
413
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275 }