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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 "CairoCompositor.h"
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23
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24 #include "Internals/CairoColorTextureRenderer.h"
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25 #include "Internals/CairoFloatTextureRenderer.h"
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26 #include "Internals/CairoInfoPanelRenderer.h"
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27 #include "Internals/CairoPolylineRenderer.h"
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28 #include "Internals/CairoTextRenderer.h"
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29
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30 #include <Core/OrthancException.h>
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31
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32 namespace OrthancStone
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33 {
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34 cairo_t* CairoCompositor::GetCairoContext()
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35 {
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36 if (context_.get() == NULL)
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37 {
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38 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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39 }
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40 else
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41 {
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42 return context_->GetObject();
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43 }
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44 }
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45
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46
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47 Internals::CompositorHelper::ILayerRenderer* CairoCompositor::Create(const ISceneLayer& layer)
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48 {
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49 switch (layer.GetType())
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50 {
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51 case ISceneLayer::Type_Polyline:
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52 return new Internals::CairoPolylineRenderer(*this, layer);
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53
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54 case ISceneLayer::Type_InfoPanel:
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55 return new Internals::CairoInfoPanelRenderer(*this, layer);
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56
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57 case ISceneLayer::Type_ColorTexture:
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58 return new Internals::CairoColorTextureRenderer(*this, layer);
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59
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60 case ISceneLayer::Type_FloatTexture:
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61 return new Internals::CairoFloatTextureRenderer(*this, layer);
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62
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63 case ISceneLayer::Type_Text:
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64 {
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65 const TextSceneLayer& l = dynamic_cast<const TextSceneLayer&>(layer);
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66
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67 Fonts::const_iterator found = fonts_.find(l.GetFontIndex());
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68 if (found == fonts_.end())
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69 {
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70 return NULL;
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71 }
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72 else
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73 {
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74 assert(found->second != NULL);
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75 return new Internals::CairoTextRenderer(*this, *found->second, l);
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76 }
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77 }
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78
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79 default:
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80 return NULL;
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81 }
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82 }
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83
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84
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85 CairoCompositor::CairoCompositor(Scene2D& scene,
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86 unsigned int canvasWidth,
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87 unsigned int canvasHeight) :
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88 helper_(scene, *this)
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89 {
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90 canvas_.SetSize(canvasWidth, canvasHeight, false);
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91 }
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92
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93
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94 CairoCompositor::~CairoCompositor()
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95 {
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96 for (Fonts::iterator it = fonts_.begin(); it != fonts_.end(); ++it)
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97 {
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98 assert(it->second != NULL);
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99 delete it->second;
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100 }
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101 }
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102
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103
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104 void CairoCompositor::SetFont(size_t index,
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105 GlyphBitmapAlphabet* dict) // Takes ownership
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106 {
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107 if (dict == NULL)
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108 {
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109 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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110 }
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111 else
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112 {
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113 std::auto_ptr<GlyphBitmapAlphabet> protection(dict);
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114
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115 Fonts::iterator found = fonts_.find(index);
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116
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117 if (found == fonts_.end())
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118 {
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119 fonts_[index] = protection.release();
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120 }
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121 else
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122 {
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123 assert(found->second != NULL);
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124 delete found->second;
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125
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126 found->second = protection.release();
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127 }
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128 }
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129 }
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130
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131
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132 #if ORTHANC_ENABLE_LOCALE == 1
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133 void CairoCompositor::SetFont(size_t index,
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134 Orthanc::EmbeddedResources::FileResourceId resource,
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135 unsigned int fontSize,
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136 Orthanc::Encoding codepage)
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137 {
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138 FontRenderer renderer;
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139 renderer.LoadFont(font, fontSize);
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140
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141 std::auto_ptr<GlyphBitmapAlphabet> alphabet(new GlyphBitmapAlphabet);
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142 alphabet->LoadCodepage(renderer, codepage);
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143
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144 SetFont(index, alphabet.release());
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145 }
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146 #endif
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147
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148
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149 void CairoCompositor::Refresh()
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150 {
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151 context_.reset(new CairoContext(canvas_));
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152
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153 // https://www.cairographics.org/FAQ/#clear_a_surface
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154 cairo_set_source_rgba(context_->GetObject(), 0, 0, 0, 255);
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155 cairo_paint(context_->GetObject());
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156
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157 helper_.Refresh(canvas_.GetWidth(), canvas_.GetHeight());
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158 context_.reset();
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159 }
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160
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161
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162 Orthanc::ImageAccessor* CairoCompositor::RenderText(size_t fontIndex,
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163 const std::string& utf8) const
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164 {
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165 Fonts::const_iterator found = fonts_.find(fontIndex);
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166
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167 if (found == fonts_.end())
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168 {
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169 return NULL;
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170 }
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171 else
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172 {
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173 assert(found->second != NULL);
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174 return found->second->RenderText(utf8);
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175 }
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176 }
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177 }
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