Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Platforms/Sdl/SdlWindow.cpp @ 2077:07964689cb0b

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upgrade to year 2023
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 12 Jul 2023 21:20:22 +0200
parents 917500c46fe0
children c23eef785569
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1899
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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
2077
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5 * Copyright (C) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2023 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
1899
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "SdlWindow.h"
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25
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26 #if ORTHANC_ENABLE_SDL == 1
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27
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28 #include <Logging.h>
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29 #include <OrthancException.h>
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30
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31 #ifdef WIN32
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32 #include <windows.h> // for SetProcessDpiAware
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33 #endif
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34 // WIN32
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35
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36 #include <SDL_render.h>
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37 #include <SDL_video.h>
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38 #include <SDL.h>
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39
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40 namespace OrthancStone
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41 {
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42 SdlWindow::SdlWindow(const std::string& title,
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43 unsigned int width,
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44 unsigned int height,
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45 bool enableOpenGl,
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46 bool allowDpiScaling) :
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47 maximized_(false)
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48 {
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49 // TODO Understand why, with SDL_WINDOW_OPENGL + MinGW32 + Release
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50 // build mode, the application crashes whenever the SDL window is
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51 // resized or maximized
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52
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53 uint32_t windowFlags, rendererFlags;
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54 if (enableOpenGl)
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55 {
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56 windowFlags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE;
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57 rendererFlags = SDL_RENDERER_ACCELERATED;
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58 }
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59 else
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60 {
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61 windowFlags = SDL_WINDOW_RESIZABLE;
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62 rendererFlags = SDL_RENDERER_SOFTWARE;
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63 }
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64
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65 // TODO: probably required on MacOS X, too
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66 #if defined(WIN32) && (_WIN32_WINNT >= 0x0600)
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67 if (!allowDpiScaling)
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68 {
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69 // if we do NOT allow DPI scaling, it means an SDL pixel will be a real
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70 // monitor pixel. This is needed for high-DPI applications
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71
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72 // Enable high-DPI support on Windows
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73
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74 // THE FOLLOWING HAS BEEN COMMENTED OUT BECAUSE IT WILL CRASH UNDER
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75 // OLD WINDOWS VERSIONS
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76 // ADD THIS AT THE TOP TO ENABLE IT:
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77 //
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78 //#pragma comment(lib, "Shcore.lib") THIS IS ONLY REQUIRED FOR SetProcessDpiAwareness
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79 //#include <windows.h>
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80 //#include <ShellScalingAPI.h> THIS IS ONLY REQUIRED FOR SetProcessDpiAwareness
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81 //#include <comdef.h> THIS IS ONLY REQUIRED FOR SetProcessDpiAwareness
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82 // SetProcessDpiAwareness(PROCESS_PER_MONITOR_DPI_AWARE);
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83
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84 // This is supported on Vista+
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85 SetProcessDPIAware();
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86
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87 windowFlags |= SDL_WINDOW_ALLOW_HIGHDPI;
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88 }
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89 #endif
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90 // WIN32
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91
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92 window_ = SDL_CreateWindow(title.c_str(),
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93 SDL_WINDOWPOS_UNDEFINED,
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94 SDL_WINDOWPOS_UNDEFINED,
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95 width, height, windowFlags);
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96
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97 if (window_ == NULL)
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98 {
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99 LOG(ERROR) << "Cannot create the SDL window: " << SDL_GetError();
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100 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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101 }
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102
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103 renderer_ = SDL_CreateRenderer(window_, -1, rendererFlags);
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104 if (!renderer_)
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105 {
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106 LOG(ERROR) << "Cannot create the SDL renderer: " << SDL_GetError();
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107 SDL_DestroyWindow(window_);
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108 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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109 }
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110 }
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111
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112
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113 SdlWindow::~SdlWindow()
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114 {
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115 if (renderer_ != NULL)
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116 {
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117 SDL_DestroyRenderer(renderer_);
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118 }
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119
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120 if (window_ != NULL)
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121 {
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122 SDL_DestroyWindow(window_);
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123 }
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124 }
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125
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126
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127 unsigned int SdlWindow::GetWidth() const
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128 {
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129 int w = -1;
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130 SDL_GetWindowSize(window_, &w, NULL);
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131
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132 if (w < 0)
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133 {
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134 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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135 }
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136 else
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137 {
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138 return static_cast<unsigned int>(w);
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139 }
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140 }
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141
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142
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143 unsigned int SdlWindow::GetHeight() const
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144 {
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145 int h = -1;
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146 SDL_GetWindowSize(window_, NULL, &h);
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147
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148 if (h < 0)
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149 {
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150 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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151 }
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152 else
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153 {
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154 return static_cast<unsigned int>(h);
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155 }
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156 }
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157
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158
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159 void SdlWindow::Render(SDL_Surface* surface)
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160 {
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161 /**
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162 * "You are strongly encouraged to call SDL_RenderClear() to
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163 * initialize the backbuffer before starting each new frame's
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164 * drawing, even if you plan to overwrite every pixel."
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165 * https://wiki.libsdl.org/SDL_RenderPresent
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166 **/
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167 SDL_SetRenderDrawColor(renderer_, 0, 0, 0, 255);
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168 SDL_RenderClear(renderer_); // Clear the entire screen to our selected color
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169
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170 SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer_, surface);
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171 if (texture != NULL)
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172 {
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173 SDL_RenderCopy(renderer_, texture, NULL, NULL);
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174 SDL_DestroyTexture(texture);
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175 }
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176
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177 SDL_RenderPresent(renderer_);
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178 }
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179
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180
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181 void SdlWindow::ToggleMaximize()
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182 {
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183 if (maximized_)
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184 {
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185 SDL_RestoreWindow(window_);
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186 maximized_ = false;
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187 }
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188 else
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189 {
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190 SDL_MaximizeWindow(window_);
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191 maximized_ = true;
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192 }
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193 }
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194
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195
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196 void SdlWindow::GlobalInitialize()
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197 {
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198 if (SDL_Init(SDL_INIT_VIDEO) != 0)
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199 {
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200 LOG(ERROR) << "Cannot initialize SDL";
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201 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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202 }
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203 }
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204
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205
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206 void SdlWindow::GlobalFinalize()
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207 {
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208 SDL_Quit();
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209 }
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210 }
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211
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212 #endif