Mercurial > hg > orthanc-stone

annotate Framework/Radiography/RadiographyWidget.cpp @ 492:64d90190a08c am-touch-events

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template GetLayer
author Alain Mazy <alain@mazy.be>
date Wed, 20 Feb 2019 20:57:43 +0100
parents a750f11892ec
children 11fa6f00e33c
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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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27
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28 #include "RadiographyMaskLayer.h"
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29
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30 namespace OrthancStone
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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
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65 bool RadiographyWidget::RenderInternal(unsigned int width,
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66 unsigned int height,
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67 ImageInterpolation interpolation)
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68 {
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69 float windowCenter, windowWidth;
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70 scene_->GetWindowingWithDefault(windowCenter, windowWidth);
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71
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72 float x0 = windowCenter - windowWidth / 2.0f;
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73 float x1 = windowCenter + windowWidth / 2.0f;
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74
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75 if (windowWidth <= 0.001f) // Avoid division by zero at (*)
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76 {
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77 return false;
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78 }
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79 else
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80 {
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81 if (floatBuffer_.get() == NULL ||
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82 floatBuffer_->GetWidth() != width ||
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83 floatBuffer_->GetHeight() != height)
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84 {
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85 floatBuffer_.reset(new Orthanc::Image(Orthanc::PixelFormat_Float32, width, height, false));
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86 }
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87
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88 if (cairoBuffer_.get() == NULL ||
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89 cairoBuffer_->GetWidth() != width ||
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90 cairoBuffer_->GetHeight() != height)
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91 {
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92 cairoBuffer_.reset(new CairoSurface(width, height));
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93 }
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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
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99 // Conversion from Float32 to BGRA32 (cairo). Very similar to
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100 // GrayscaleFrameRenderer => TODO MERGE?
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101
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102 Orthanc::ImageAccessor target;
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103 cairoBuffer_->GetWriteableAccessor(target);
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104
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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
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109 for (unsigned int y = 0; y < height; y++)
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110 {
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111 const float* p = reinterpret_cast<const float*>(floatBuffer_->GetConstRow(y));
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112 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y));
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113
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114 for (unsigned int x = 0; x < width; x++, p++, q += 4)
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115 {
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116 uint8_t v = 0;
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117 if (*p >= x1)
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118 {
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119 v = 255;
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120 }
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121 else if (*p <= x0)
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122 {
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123 v = 0;
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124 }
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125 else
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126 {
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127 // https://en.wikipedia.org/wiki/Linear_interpolation
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128 v = static_cast<uint8_t>(scaling * (*p - x0)); // (*)
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129 }
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130
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131 if (invert)
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132 {
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133 v = 255 - v;
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134 }
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135
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136 q[0] = v;
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137 q[1] = v;
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138 q[2] = v;
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139 q[3] = 255;
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140 }
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141 }
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142
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143 return true;
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144 }
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145 }
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146
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147
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148 bool RadiographyWidget::RenderScene(CairoContext& context,
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149 const ViewportGeometry& view)
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150 {
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151 cairo_t* cr = context.GetObject();
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152
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153 if (RenderInternal(context.GetWidth(), context.GetHeight(), interpolation_))
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154 {
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155 // https://www.cairographics.org/FAQ/#paint_from_a_surface
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156 cairo_save(cr);
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157 cairo_identity_matrix(cr);
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158 cairo_set_source_surface(cr, cairoBuffer_->GetObject(), 0, 0);
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159 cairo_paint(cr);
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160 cairo_restore(cr);
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161 }
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162 else
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163 {
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164 // https://www.cairographics.org/FAQ/#clear_a_surface
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165 context.SetSourceColor(0, 0, 0);
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166 cairo_paint(cr);
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167 }
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168
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169 if (hasSelection_)
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170 {
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171 scene_->DrawBorder(context, selectedLayer_, view.GetZoom());
413
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172 }
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173
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174 return true;
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175 }
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176
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177
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178 RadiographyWidget::RadiographyWidget(MessageBroker& broker,
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179 boost::shared_ptr<RadiographyScene> scene,
413
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180 const std::string& name) :
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181 WorldSceneWidget(name),
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182 IObserver(broker),
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183 invert_(false),
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184 interpolation_(ImageInterpolation_Nearest),
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185 hasSelection_(false),
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186 selectedLayer_(0) // Dummy initialization
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187 {
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188 SetScene(scene);
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189 }
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190
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191
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192 void RadiographyWidget::Select(size_t layer)
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193 {
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194 hasSelection_ = true;
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195 selectedLayer_ = layer;
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196 }
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197
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198 bool RadiographyWidget::SelectMaskLayer(size_t index)
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199 {
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200 std::vector<size_t> layerIndexes;
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201 size_t count = 0;
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202 scene_->GetLayersIndexes(layerIndexes);
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203
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204 for (size_t i = 0; i < layerIndexes.size(); ++i)
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205 {
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206 const RadiographyMaskLayer* maskLayer = dynamic_cast<const RadiographyMaskLayer*>(&(scene_->GetLayer(layerIndexes[i])));
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207 if (maskLayer != NULL)
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208 {
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209 if (count == index)
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210 {
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211 Select(layerIndexes[i]);
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212 return true;
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213 }
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214 count++;
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215 }
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216 }
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217
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218 return false;
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219 }
413
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220
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221 bool RadiographyWidget::LookupSelectedLayer(size_t& layer)
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222 {
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223 if (hasSelection_)
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224 {
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225 layer = selectedLayer_;
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226 return true;
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227 }
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228 else
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229 {
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230 return false;
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231 }
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232 }
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233
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234
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235 void RadiographyWidget::OnGeometryChanged(const RadiographyScene::GeometryChangedMessage& message)
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236 {
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237 LOG(INFO) << "Scene geometry has changed";
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238
413
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239 FitContent();
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240 }
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241
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242
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243 void RadiographyWidget::OnContentChanged(const RadiographyScene::ContentChangedMessage& message)
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244 {
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245 LOG(INFO) << "Scene content has changed";
413
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246 NotifyContentChanged();
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247 }
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248
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249
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250 void RadiographyWidget::SetInvert(bool invert)
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251 {
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252 if (invert_ != invert)
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253 {
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254 invert_ = invert;
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255 NotifyContentChanged();
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256 }
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257 }
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258
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259
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260 void RadiographyWidget::SwitchInvert()
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261 {
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262 invert_ = !invert_;
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263 NotifyContentChanged();
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264 }
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265
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266
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267 void RadiographyWidget::SetInterpolation(ImageInterpolation interpolation)
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268 {
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269 if (interpolation_ != interpolation)
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270 {
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271 interpolation_ = interpolation;
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272 NotifyContentChanged();
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273 }
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274 }
428
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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(
432
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286 new Callable<RadiographyWidget, RadiographyScene::GeometryChangedMessage>
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287 (*this, &RadiographyWidget::OnGeometryChanged));
428
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diff changeset
288
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diff changeset
289 scene_->RegisterObserverCallback(
432
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290 new Callable<RadiographyWidget, RadiographyScene::ContentChangedMessage>
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diff changeset
291 (*this, &RadiographyWidget::OnContentChanged));
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diff changeset
292
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293 NotifyContentChanged();
428
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diff changeset
294
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diff changeset
295 // force redraw
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diff changeset
296 FitContent();
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diff changeset
297 }
413
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298 }