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66
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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 Osimis, 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 "LayerWidget.h"
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23
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24 #include "../../Resources/Orthanc/Core/Logging.h"
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25
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26 namespace OrthancStone
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27 {
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28 class LayerWidget::Scene : public boost::noncopyable
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29 {
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30 private:
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31 SliceGeometry slice_;
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32 size_t countMissing_;
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33 std::vector<ILayerRenderer*> renderers_;
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34
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35 void DeleteLayer(size_t index)
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36 {
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37 if (index >= renderers_.size())
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38 {
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39 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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40 }
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41
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42 assert(countMissing_ <= renderers_.size());
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43
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44 if (renderers_[index] != NULL)
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45 {
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46 assert(countMissing_ < renderers_.size());
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47 delete renderers_[index];
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48 renderers_[index] = NULL;
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49 countMissing_++;
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50 }
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51 }
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52
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53 public:
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54 Scene(const SliceGeometry& slice,
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55 size_t countLayers) :
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56 slice_(slice),
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57 countMissing_(countLayers),
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58 renderers_(countLayers, NULL)
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59 {
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60 }
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61
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62 ~Scene()
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63 {
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64 for (size_t i = 0; i < renderers_.size(); i++)
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65 {
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66 DeleteLayer(i);
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67 }
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68 }
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69
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70 void SetLayer(size_t index,
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71 ILayerRenderer* renderer) // Takes ownership
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72 {
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73 if (renderer == NULL)
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74 {
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75 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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76 }
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77
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78 DeleteLayer(index);
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79
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80 renderers_[index] = renderer;
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81 countMissing_--;
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82 }
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83
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84 const SliceGeometry& GetSlice() const
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85 {
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86 return slice_;
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87 }
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88
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89 bool IsComplete() const
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90 {
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91 return countMissing_ == 0;
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92 }
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93
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94 bool IsSamePlane(const SliceGeometry& slice,
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95 double sliceThickness)
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96 {
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97 return slice_.IsSamePlane(slice, sliceThickness);
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98 }
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99
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100 bool RenderScene(CairoContext& context,
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101 const ViewportGeometry& view)
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102 {
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103 bool fullQuality = true;
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104
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105 for (size_t i = 0; i < renderers_.size(); i++)
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106 {
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107 if (renderers_[i] != NULL &&
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108 !renderers_[i]->RenderLayer(context, view))
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109 {
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110 return false;
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111 }
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112
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113 if (renderers_[i] != NULL &&
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114 !renderers_[i]->IsFullQuality())
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115 {
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116 fullQuality = false;
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117 }
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118 }
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119
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120 if (!fullQuality)
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121 {
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122 double x, y;
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123 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10);
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124
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125 cairo_t *cr = context.GetObject();
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126 cairo_translate(cr, x, y);
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127 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI);
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128 cairo_set_line_width(cr, 2.0 / view.GetZoom());
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129 cairo_set_source_rgb(cr, 1, 1, 1);
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130 cairo_stroke_preserve(cr);
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131 cairo_set_source_rgb(cr, 1, 0, 0);
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132 cairo_fill(cr);
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133 }
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134
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135 return true;
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136 }
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137
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138 void SetLayerStyle(size_t index,
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139 const RenderStyle& style)
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140 {
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141 if (renderers_[index] != NULL)
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142 {
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143 renderers_[index]->SetLayerStyle(style);
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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
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149 bool LayerWidget::LookupLayer(size_t& index /* out */,
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150 ILayerSource& layer) const
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151 {
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152 LayersIndex::const_iterator found = layersIndex_.find(&layer);
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153
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154 if (found == layersIndex_.end())
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155 {
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156 return false;
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157 }
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158 else
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159 {
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160 index = found->second;
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161 assert(index < layers_.size() &&
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162 layers_[index] == &layer);
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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
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168 void LayerWidget::GetSceneExtent(double& x1,
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169 double& y1,
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170 double& x2,
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171 double& y2)
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172 {
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173 bool first = true;
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174
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175 for (size_t i = 0; i < layers_.size(); i++)
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176 {
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177 double ax, ay, bx, by;
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178
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179 assert(layers_[i] != NULL);
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180 if (layers_[i]->GetExtent(ax, ay, bx, by, slice_))
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181 {
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182 if (ax > bx)
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183 {
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184 std::swap(ax, bx);
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185 }
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186
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187 if (ay > by)
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188 {
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189 std::swap(ay, by);
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190 }
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191
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192 //LOG(INFO) << "Extent of layer " << i << ": (" << ax << "," << ay << ")->(" << bx << "," << by << ")";
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193 printf("Extent %d: (%f,%f) -> (%f,%f)\n", (int) i, ax, ay, bx, by);
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194
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195 if (first)
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196 {
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197 x1 = ax;
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198 y1 = ay;
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199 x2 = bx;
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200 y2 = by;
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201 first = false;
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202 }
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203 else
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204 {
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205 x1 = std::min(x1, ax);
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206 y1 = std::min(y1, ay);
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207 x2 = std::max(x2, bx);
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208 y2 = std::max(y2, by);
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209 }
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210 }
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211 }
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212
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213 if (first)
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214 {
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215 // Set a default extent of (-1,-1) -> (0,0)
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216 x1 = -1;
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217 y1 = -1;
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218 x2 = 1;
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219 y2 = 1;
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220 }
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221
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222 // Ensure the extent is non-empty
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223 if (x1 >= x2)
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224 {
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225 double tmp = x1;
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226 x1 = tmp - 0.5;
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227 x2 = tmp + 0.5;
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228 }
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229
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230 if (y1 >= y2)
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231 {
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232 double tmp = y1;
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233 y1 = tmp - 0.5;
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234 y2 = tmp + 0.5;
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235 }
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236 }
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237
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238
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239 bool LayerWidget::RenderScene(CairoContext& context,
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240 const ViewportGeometry& view)
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241 {
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242 if (currentScene_.get() != NULL)
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243 {
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244 return currentScene_->RenderScene(context, view);
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245 }
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246 else
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247 {
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248 return true;
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249 }
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250 }
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251
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252
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253 void LayerWidget::ResetPendingScene()
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254 {
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255 pendingScene_.reset(new Scene(slice_, layers_.size()));
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256 }
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257
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258
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259 void LayerWidget::UpdateLayer(size_t index,
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260 ILayerRenderer* renderer,
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261 const SliceGeometry& slice)
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262 {
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263 printf("Updating layer %d\n", (int) index);
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264
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265 std::auto_ptr<ILayerRenderer> tmp(renderer);
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266
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267 if (renderer == NULL)
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268 {
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269 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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270 }
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271
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272 if (index >= layers_.size())
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273 {
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274 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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275 }
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276
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277 assert(layers_.size() == styles_.size());
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278 renderer->SetLayerStyle(styles_[index]);
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279
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280 if (currentScene_.get() != NULL &&
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281 currentScene_->IsSamePlane(slice, sliceThickness_))
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282 {
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283 currentScene_->SetLayer(index, tmp.release());
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284 NotifyChange();
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285 }
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286 else if (pendingScene_.get() != NULL &&
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287 pendingScene_->IsSamePlane(slice, sliceThickness_))
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288 {
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289 pendingScene_->SetLayer(index, tmp.release());
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290
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291 if (currentScene_.get() == NULL ||
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292 pendingScene_->IsComplete())
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293 {
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294 currentScene_ = pendingScene_;
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295 NotifyChange();
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296 }
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297 }
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298 }
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299
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300
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301 LayerWidget::LayerWidget() :
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302 started_(false),
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303 sliceThickness_(1)
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304 {
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305 SetBackgroundCleared(true);
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306 }
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307
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308
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309 LayerWidget::~LayerWidget()
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310 {
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311 for (size_t i = 0; i < layers_.size(); i++)
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312 {
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313 delete layers_[i];
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314 }
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315 }
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316
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317
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318 size_t LayerWidget::AddLayer(ILayerSource* layer) // Takes ownership
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319 {
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320 if (layer == NULL)
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321 {
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322 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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323 }
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324
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325 size_t index = layers_.size();
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326 layers_.push_back(layer);
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327 styles_.push_back(RenderStyle());
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328 layersIndex_[layer] = index;
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329
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330 ResetPendingScene();
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331 layer->SetObserver(*this);
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332
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333 return index;
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334 }
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335
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336
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337 void LayerWidget::SetLayerStyle(size_t layer,
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338 const RenderStyle& style)
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339 {
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340 if (layer >= layers_.size())
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341 {
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342 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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343 }
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344
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345 assert(layers_.size() == styles_.size());
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346 styles_[layer] = style;
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347
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348 if (currentScene_.get() != NULL)
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349 {
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350 currentScene_->SetLayerStyle(layer, style);
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351 }
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352
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353 if (pendingScene_.get() != NULL)
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354 {
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355 pendingScene_->SetLayerStyle(layer, style);
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356 }
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357
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358 NotifyChange();
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359 }
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360
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361
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362 void LayerWidget::SetSlice(const SliceGeometry& slice,
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363 double sliceThickness)
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364 {
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365 if (!slice_.IsSamePlane(slice, 100.0 * std::numeric_limits<double>::epsilon()))
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366 {
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367 if (currentScene_.get() == NULL ||
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368 (pendingScene_.get() != NULL &&
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369 pendingScene_->IsComplete()))
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370 {
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371 currentScene_ = pendingScene_;
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372 }
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373
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374 slice_ = slice;
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375 sliceThickness_ = sliceThickness;
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376 ResetPendingScene();
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377
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378 if (started_)
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379 {
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380 for (size_t i = 0; i < layers_.size(); i++)
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381 {
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382 assert(layers_[i] != NULL);
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383 layers_[i]->ScheduleLayerCreation(slice_);
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384 }
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385 }
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386 }
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387 }
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388
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389
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390 void LayerWidget::NotifyGeometryReady(ILayerSource& source)
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391 {
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392 size_t i;
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393 if (LookupLayer(i, source))
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394 printf("Geometry ready for layer %d\n", (int) i);
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395
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396 SetDefaultView();
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397 layers_[i]->ScheduleLayerCreation(slice_);
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398 }
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399
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400
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401 void LayerWidget::NotifySourceChange(ILayerSource& source)
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402 {
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403 source.ScheduleLayerCreation(slice_);
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404 }
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405
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406
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407 void LayerWidget::NotifySliceChange(ILayerSource& source,
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408 const SliceGeometry& slice)
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409 {
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410 if (slice_.IsSamePlane(slice, sliceThickness_))
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411 {
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412 source.ScheduleLayerCreation(slice_);
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413 }
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414 }
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415
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416
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417 void LayerWidget::NotifyLayerReady(ILayerRenderer* renderer,
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418 ILayerSource& source,
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419 const SliceGeometry& viewportSlice)
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420 {
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421 std::auto_ptr<ILayerRenderer> tmp(renderer);
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422
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423 size_t i;
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424 if (LookupLayer(i, source))
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425 printf("Renderer ready for layer %d\n", (int) i);
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426
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427 size_t index;
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428 if (LookupLayer(index, source))
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429 {
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430 UpdateLayer(index, tmp.release(), viewportSlice);
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431 }
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432 }
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433
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434
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435 void LayerWidget::NotifyLayerError(ILayerSource& source,
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436 const SliceGeometry& viewportSlice)
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437 {
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438 size_t i;
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439 if (LookupLayer(i, source))
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440 LOG(ERROR) << "Error on layer " << i;
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441 }
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442
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443
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444 void LayerWidget::Start()
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445 {
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446 if (started_)
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447 {
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448 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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449 }
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450
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451 for (size_t i = 0; i < layers_.size(); i++)
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452 {
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453 assert(layers_[i] != NULL);
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454 layers_[i]->Start();
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455 }
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456 }
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457 }
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