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600
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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 // From Stone
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23 #include "../../Applications/Sdl/SdlOpenGLWindow.h"
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24 #include "../../Framework/Scene2D/CairoCompositor.h"
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25 #include "../../Framework/Scene2D/OpenGLCompositor.h"
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26 #include "../../Framework/Scene2D/Scene2D.h"
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27 #include "../../Framework/Scene2D/PanSceneTracker.h"
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28 #include "../../Framework/Scene2D/RotateSceneTracker.h"
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29 #include "../../Framework/Scene2D/ZoomSceneTracker.h"
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30 #include "../../Framework/Scene2D/ColorTextureSceneLayer.h"
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31
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32 // From Orthanc framework
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33 #include <Core/Logging.h>
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34 #include <Core/OrthancException.h>
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35 #include <Core/Images/Image.h>
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36 #include <Core/Images/ImageProcessing.h>
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37 #include <Core/Images/PngWriter.h>
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38
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39 #include <SDL.h>
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40 #include <stdio.h>
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41
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42 static const unsigned int FONT_SIZE = 64;
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43
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44
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45 void PrepareScene(OrthancStone::Scene2D& scene)
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46 {
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47 using namespace OrthancStone;
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48
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49 // Texture of 2x2 size
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50 {
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51 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false);
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52
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53 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0));
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54 p[0] = 255;
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55 p[1] = 0;
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56 p[2] = 0;
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57
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58 p[3] = 0;
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59 p[4] = 255;
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60 p[5] = 0;
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61
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62 p = reinterpret_cast<uint8_t*>(i.GetRow(1));
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63 p[0] = 0;
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64 p[1] = 0;
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65 p[2] = 255;
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66
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67 p[3] = 255;
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68 p[4] = 0;
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69 p[5] = 0;
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70
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71 scene.SetLayer(12, new ColorTextureSceneLayer(i));
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72
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73 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i));
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74 l->SetOrigin(-3, 2);
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75 l->SetPixelSpacing(1.5, 1);
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76 l->SetAngle(20.0 / 180.0 * M_PI);
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77 scene.SetLayer(14, l.release());
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78 }
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79
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80 // Texture of 1x1 size
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81 {
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82 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false);
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83
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84 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0));
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85 p[0] = 255;
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86 p[1] = 0;
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87 p[2] = 0;
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88
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89 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i));
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90 l->SetOrigin(-2, 1);
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91 l->SetAngle(20.0 / 180.0 * M_PI);
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92 scene.SetLayer(13, l.release());
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93 }
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94
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95 // Some lines
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96 {
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97 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer);
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98
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99 layer->SetThickness(1);
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100
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101 PolylineSceneLayer::Chain chain;
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102 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5));
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103 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5));
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104 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5));
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105 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5));
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106 layer->AddChain(chain, true);
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107
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108 chain.clear();
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109 chain.push_back(ScenePoint2D(-5, -5));
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110 chain.push_back(ScenePoint2D(5, -5));
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111 chain.push_back(ScenePoint2D(5, 5));
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112 chain.push_back(ScenePoint2D(-5, 5));
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113 layer->AddChain(chain, true);
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114
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115 double dy = 1.01;
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116 chain.clear();
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117 chain.push_back(ScenePoint2D(-4, -4));
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118 chain.push_back(ScenePoint2D(4, -4 + dy));
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119 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy));
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120 chain.push_back(ScenePoint2D(4, 2));
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121 layer->AddChain(chain, false);
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122
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123 layer->SetColor(0,255, 255);
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124 scene.SetLayer(50, layer.release());
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125 }
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126
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127 // Some text
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128 scene.SetLayer(170, new TextSceneLayer(0, 0, "Hello", 0, BitmapAnchor_Center, 20));
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129 }
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130
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131
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132 void TakeScreenshot(const std::string& target,
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133 const OrthancStone::Scene2D& scene,
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134 unsigned int canvasWidth,
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135 unsigned int canvasHeight)
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136 {
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137 // Take a screenshot, then save it as PNG file
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138 OrthancStone::CairoCompositor compositor(scene, canvasWidth, canvasHeight);
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139 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1);
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140 compositor.Refresh();
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141
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142 Orthanc::ImageAccessor canvas;
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143 compositor.GetCanvas().GetReadOnlyAccessor(canvas);
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144
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145 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false);
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146 Orthanc::ImageProcessing::Convert(png, canvas);
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147
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148 Orthanc::PngWriter writer;
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149 writer.WriteToFile(target, png);
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150 }
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151
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152
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153 void HandleApplicationEvent(OrthancStone::Scene2D& scene,
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154 const SDL_Event& event,
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155 std::auto_ptr<OrthancStone::IPointerTracker>& activeTracker,
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156 unsigned int windowWidth,
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157 unsigned int windowHeight)
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158 {
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159 if (event.type == SDL_MOUSEBUTTONDOWN)
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160 {
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161 OrthancStone::PointerEvent e;
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162 e.AddIntegerPosition(event.button.x, event.button.y);
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163
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164 switch (event.button.button)
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165 {
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166 case SDL_BUTTON_MIDDLE:
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167 activeTracker.reset(new OrthancStone::PanSceneTracker(scene, e));
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168 break;
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169
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170 case SDL_BUTTON_RIGHT:
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171 activeTracker.reset(new OrthancStone::ZoomSceneTracker
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172 (scene, e, windowWidth, windowHeight));
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173 break;
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174
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175 case SDL_BUTTON_LEFT:
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176 activeTracker.reset(new OrthancStone::RotateSceneTracker
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177 (scene, e, windowWidth, windowHeight));
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178 break;
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179
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180 default:
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181 break;
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182 }
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183 }
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184 else if (event.type == SDL_KEYDOWN &&
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185 event.key.repeat == 0 /* Ignore key bounce */)
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186 {
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187 switch (event.key.keysym.sym)
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188 {
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189 case SDLK_s:
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190 scene.FitContent(windowWidth, windowHeight);
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191 break;
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192
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193 case SDLK_c:
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194 TakeScreenshot("screenshot.png", scene, windowWidth, windowHeight);
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195 break;
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196
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197 default:
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198 break;
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199 }
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200 }
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201 }
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202
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203
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204 static void GLAPIENTRY
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205 OpenGLMessageCallback(GLenum source,
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206 GLenum type,
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207 GLuint id,
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208 GLenum severity,
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209 GLsizei length,
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210 const GLchar* message,
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211 const void* userParam )
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212 {
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213 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION)
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214 {
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215 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n",
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216 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ),
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217 type, severity, message );
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218 }
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219 }
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220
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221
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222 void Run(OrthancStone::Scene2D& scene)
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223 {
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224 OrthancStone::SdlOpenGLWindow window("Hello", 1024, 768);
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225 scene.FitContent(window.GetCanvasWidth(), window.GetCanvasHeight());
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226
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227 glEnable(GL_DEBUG_OUTPUT);
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228 glDebugMessageCallback(OpenGLMessageCallback, 0 );
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229
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230 OrthancStone::OpenGLCompositor compositor(window, scene);
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231 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT,
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232 FONT_SIZE, Orthanc::Encoding_Latin1);
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233
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234 std::auto_ptr<OrthancStone::IPointerTracker> tracker;
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235
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236 bool stop = false;
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237 while (!stop)
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238 {
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239 compositor.Refresh();
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240
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241 SDL_Event event;
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242 while (!stop &&
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243 SDL_PollEvent(&event))
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244 {
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245 if (event.type == SDL_QUIT)
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246 {
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247 stop = true;
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248 break;
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249 }
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250 else if (event.type == SDL_MOUSEMOTION)
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251 {
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252 if (tracker.get() != NULL)
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253 {
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254 OrthancStone::PointerEvent e;
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255 e.AddIntegerPosition(event.button.x, event.button.y);
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256 tracker->Update(e);
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257 }
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258 }
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259 else if (event.type == SDL_MOUSEBUTTONUP)
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260 {
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261 if (tracker.get() != NULL)
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262 {
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263 tracker->Release();
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264 tracker.reset(NULL);
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265 }
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266 }
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267 else if (event.type == SDL_WINDOWEVENT &&
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268 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED)
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269 {
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270 tracker.reset(NULL);
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271 compositor.UpdateSize();
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272 }
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273 else if (event.type == SDL_KEYDOWN &&
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274 event.key.repeat == 0 /* Ignore key bounce */)
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275 {
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276 switch (event.key.keysym.sym)
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277 {
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278 case SDLK_f:
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279 window.GetWindow().ToggleMaximize();
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280 break;
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281
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282 case SDLK_q:
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283 stop = true;
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284 break;
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285
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286 default:
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287 HandleApplicationEvent(scene, event, tracker, window.GetCanvasWidth(), window.GetCanvasHeight());
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288 break;
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289 }
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290 }
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291 else
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292 {
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293 HandleApplicationEvent(scene, event, tracker, window.GetCanvasWidth(), window.GetCanvasHeight());
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294 }
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295 }
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296
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297 SDL_Delay(1);
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298 }
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299 }
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300
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301
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302 int main()
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303 {
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304 Orthanc::Logging::Initialize();
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305 OrthancStone::SdlWindow::GlobalInitialize();
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306
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307 try
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308 {
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309 OrthancStone::Scene2D scene;
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310 PrepareScene(scene);
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311 Run(scene);
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312 }
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313 catch (Orthanc::OrthancException& e)
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314 {
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315 LOG(ERROR) << "EXCEPTION: " << e.What();
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316 }
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317
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318 OrthancStone::SdlWindow::GlobalFinalize();
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319 Orthanc::Logging::Finalize();
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320
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321 return 0;
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322 }
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