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annotate Framework/Radiography/RadiographyWidget.cpp @ 1220:9ee6b28f53e8

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RadiographyTextLayer: support multiple fonts
author Alain Mazy <alain@mazy.be>
date Sat, 07 Dec 2019 17:47:23 +0100
parents 922d2e61aa5d
children 37bc7f115f81 c14fde4a595c
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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 // MONOCHROME1 images must be inverted and the user can invert the
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36 // image, too -> XOR the two
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37 return (scene_->GetPreferredPhotomotricDisplayMode() ==
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38 RadiographyPhotometricDisplayMode_Monochrome1) ^ invert_;
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39 }
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40
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41 void RadiographyWidget::RenderBackground(
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42 Orthanc::ImageAccessor& image, float minValue, float maxValue)
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43 {
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44 // wipe background before rendering
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45 float backgroundValue = minValue;
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46
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47 switch (scene_->GetPreferredPhotomotricDisplayMode())
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48 {
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49 case RadiographyPhotometricDisplayMode_Monochrome1:
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50 case RadiographyPhotometricDisplayMode_Default:
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51 if (IsInvertedInternal())
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52 backgroundValue = maxValue;
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53 else
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54 backgroundValue = minValue;
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55 break;
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56 case RadiographyPhotometricDisplayMode_Monochrome2:
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57 if (IsInvertedInternal())
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58 backgroundValue = minValue;
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59 else
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60 backgroundValue = maxValue;
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61 break;
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62 default:
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63 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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64 }
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65
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66 Orthanc::ImageProcessing::Set(image, static_cast<int64_t>(backgroundValue));
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67 }
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68
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69 bool RadiographyWidget::RenderInternal(unsigned int width,
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70 unsigned int height,
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71 ImageInterpolation interpolation)
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72 {
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73 if (floatBuffer_.get() == NULL ||
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74 floatBuffer_->GetWidth() != width ||
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75 floatBuffer_->GetHeight() != height)
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76 {
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77 floatBuffer_.reset(new Orthanc::Image(
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78 Orthanc::PixelFormat_Float32, width, height, false));
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79 }
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80
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81 if (cairoBuffer_.get() == NULL ||
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82 cairoBuffer_->GetWidth() != width ||
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83 cairoBuffer_->GetHeight() != height)
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84 {
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85 cairoBuffer_.reset(new CairoSurface(width, height, false /* no alpha */));
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86 }
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87
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88 RenderBackground(*floatBuffer_, 0.0, 65535.0);
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89
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90 scene_->Render(*floatBuffer_, GetView().GetMatrix(), interpolation, true);
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91
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92 // Conversion from Float32 to BGRA32 (cairo). Very similar to
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93 // GrayscaleFrameRenderer => TODO MERGE?
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94 Orthanc::ImageAccessor target;
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95 cairoBuffer_->GetWriteableAccessor(target);
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96
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97 bool invert = IsInvertedInternal();
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98
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99 for (unsigned int y = 0; y < height; y++)
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100 {
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101 const float* p = reinterpret_cast<const float*>(floatBuffer_->GetConstRow(y));
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102 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y));
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103
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104 for (unsigned int x = 0; x < width; x++, p++, q += 4)
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105 {
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106 uint8_t v = 0;
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107 if (*p >= 65535.0)
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108 {
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109 v = 255;
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110 }
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111 else if (*p <= 0.0)
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112 {
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113 v = 0;
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114 }
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115 else
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116 {
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117 v = static_cast<uint8_t>(*p / 256.0);
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118 }
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119
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120 if (invert)
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121 {
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122 v = 255 - v;
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123 }
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124
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125 q[0] = v;
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126 q[1] = v;
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127 q[2] = v;
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128 q[3] = 255;
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129 }
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130 }
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131
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132 return true;
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133 }
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134
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135
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136 bool RadiographyWidget::RenderScene(CairoContext& context,
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137 const Deprecated::ViewportGeometry& view)
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138 {
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139 cairo_t* cr = context.GetObject();
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140
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141 if (RenderInternal(context.GetWidth(), context.GetHeight(), interpolation_))
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142 {
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143 // https://www.cairographics.org/FAQ/#paint_from_a_surface
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144 cairo_save(cr);
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145 cairo_identity_matrix(cr);
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146 cairo_set_source_surface(cr, cairoBuffer_->GetObject(), 0, 0);
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147 cairo_paint(cr);
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148 cairo_restore(cr);
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149 }
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150 else
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151 {
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152 // https://www.cairographics.org/FAQ/#clear_a_surface
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153 context.SetSourceColor(0, 0, 0);
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154 cairo_paint(cr);
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155 }
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156
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157 if (hasSelection_)
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158 {
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159 scene_->DrawBorder(
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160 context, static_cast<unsigned int>(selectedLayer_), view.GetZoom());
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161 }
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162
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163 return true;
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164 }
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165
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166
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167 RadiographyWidget::RadiographyWidget(MessageBroker& broker,
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168 boost::shared_ptr<RadiographyScene> scene,
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169 const std::string& name) :
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170 WorldSceneWidget(name),
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171 IObserver(broker),
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172 IObservable(broker),
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173 invert_(false),
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174 interpolation_(ImageInterpolation_Nearest),
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175 hasSelection_(false),
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176 selectedLayer_(0) // Dummy initialization
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177 {
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178 SetScene(scene);
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179 }
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180
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181
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182 void RadiographyWidget::Select(size_t layer)
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183 {
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184 hasSelection_ = true;
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185 selectedLayer_ = layer;
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186
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187 NotifyContentChanged();
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188 BroadcastMessage(SelectionChangedMessage(*this));
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189 }
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190
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191 void RadiographyWidget::Unselect()
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192 {
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193 hasSelection_ = false;
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194 BroadcastMessage(SelectionChangedMessage(*this));
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195 }
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196
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197 bool RadiographyWidget::LookupSelectedLayer(size_t& layer)
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198 {
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199 if (hasSelection_)
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200 {
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201 layer = selectedLayer_;
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202 return true;
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203 }
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204 else
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205 {
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206 return false;
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207 }
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208 }
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209
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210
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211 void RadiographyWidget::OnGeometryChanged(const RadiographyScene::GeometryChangedMessage& message)
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212 {
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213 // LOG(INFO) << "Scene geometry has changed";
413
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214 FitContent();
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215 }
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216
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217
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218 void RadiographyWidget::OnContentChanged(const RadiographyScene::ContentChangedMessage& message)
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219 {
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220 // LOG(INFO) << "Scene content has changed";
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221 NotifyContentChanged();
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222 }
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223
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224 void RadiographyWidget::OnLayerRemoved(const RadiographyScene::LayerRemovedMessage& message)
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225 {
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226 size_t removedLayerIndex = message.GetLayerIndex();
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227 if (hasSelection_ && selectedLayer_ == removedLayerIndex)
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228 {
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diff changeset
229 Unselect();
1131
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230 }
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231 NotifyContentChanged();
1131
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232 }
413
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233
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234 void RadiographyWidget::SetInvert(bool invert)
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235 {
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236 if (invert_ != invert)
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237 {
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238 invert_ = invert;
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239 NotifyContentChanged();
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240 }
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241 }
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242
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243
1131
4663f158c748 RadiographyWidget is now notified when a layer is removed from the scene
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244 void RadiographyWidget::SwitchInvert()
413
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245 {
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246 invert_ = !invert_;
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247 NotifyContentChanged();
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248 }
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249
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250
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251 void RadiographyWidget::SetInterpolation(ImageInterpolation interpolation)
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252 {
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253 if (interpolation_ != interpolation)
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254 {
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255 interpolation_ = interpolation;
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256 NotifyContentChanged();
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257 }
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258 }
428
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259
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260 void RadiographyWidget::SetScene(boost::shared_ptr<RadiographyScene> scene)
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261 {
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diff changeset
262 if (scene_ != NULL)
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263 {
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264 scene_->Unregister(this);
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265 }
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266
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267 scene_ = scene;
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268
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diff changeset
269 scene_->RegisterObserverCallback(
432
4eb96c6b4e96 improved handling of MONOCHROME1, background and invertion
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270 new Callable<RadiographyWidget, RadiographyScene::GeometryChangedMessage>
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diff changeset
271 (*this, &RadiographyWidget::OnGeometryChanged));
428
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272
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273 scene_->RegisterObserverCallback(
432
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274 new Callable<RadiographyWidget, RadiographyScene::ContentChangedMessage>
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diff changeset
275 (*this, &RadiographyWidget::OnContentChanged));
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276
1131
4663f158c748 RadiographyWidget is now notified when a layer is removed from the scene
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277 scene_->RegisterObserverCallback(
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278 new Callable<RadiographyWidget, RadiographyScene::LayerRemovedMessage>
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279 (*this, &RadiographyWidget::OnLayerRemoved));
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280
432
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281 NotifyContentChanged();
428
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282
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283 // force redraw
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284 FitContent();
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diff changeset
285 }
413
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286 }