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annotate Framework/Viewport/SdlViewport.h @ 1216:5147277850cf broker

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better abstraction for IViewport
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 05 Dec 2019 16:36:40 +0100
parents 9efa66d8d3f8
children 0ca50d275b9a
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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 #pragma once
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22
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23 #if !defined(ORTHANC_ENABLE_SDL)
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24 # error Macro ORTHANC_ENABLE_SDL must be defined
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25 #endif
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26
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27 #if ORTHANC_ENABLE_SDL != 1
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28 # error SDL must be enabled to use this file
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29 #endif
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30
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31 #if !defined(ORTHANC_ENABLE_OPENGL)
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32 # error The macro ORTHANC_ENABLE_OPENGL must be defined
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33 #endif
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34
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35 #if ORTHANC_ENABLE_OPENGL != 1
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36 # error Support for OpenGL is disabled
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37 #endif
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38
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39 #include "../OpenGL/SdlOpenGLContext.h"
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40 #include "../Scene2D/OpenGLCompositor.h"
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41 #include "../Scene2D/CairoCompositor.h"
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42 #include "IViewport.h"
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43
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44 #include <SDL_events.h>
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45
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46 namespace OrthancStone
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47 {
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48 class SdlViewport : public IViewport
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49 {
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50 private:
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51 boost::mutex mutex_;
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52 uint32_t refreshEvent_;
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53 boost::shared_ptr<ViewportController> controller_;
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54 std::auto_ptr<ICompositor> compositor_;
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55
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56 void SendRefreshEvent();
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57
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58 protected:
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59 class SdlLock : public ILock
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60 {
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61 private:
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62 SdlViewport& that_;
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63 boost::mutex::scoped_lock lock_;
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64
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65 public:
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66 SdlLock(SdlViewport& that) :
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67 that_(that),
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68 lock_(that.mutex_)
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69 {
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70 }
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71
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72 virtual bool HasCompositor() const ORTHANC_OVERRIDE
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73 {
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74 return true;
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75 }
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76
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77 virtual ICompositor& GetCompositor() ORTHANC_OVERRIDE;
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78
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79 virtual ViewportController& GetController() ORTHANC_OVERRIDE
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80 {
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81 return *that_.controller_;
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82 }
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83
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84 virtual void Invalidate() ORTHANC_OVERRIDE
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85 {
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86 that_.SendRefreshEvent();
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87 }
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88 };
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89
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90 void ClearCompositor()
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91 {
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92 compositor_.reset();
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93 }
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94
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95 void AcquireCompositor(ICompositor* compositor /* takes ownership */);
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96
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97 public:
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98 SdlViewport();
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99
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100 bool IsRefreshEvent(const SDL_Event& event) const
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101 {
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102 return (event.type == refreshEvent_);
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103 }
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104
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105 virtual ILock* Lock() ORTHANC_OVERRIDE
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106 {
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107 return new SdlLock(*this);
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108 }
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109
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110 virtual void UpdateSize(unsigned int width,
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111 unsigned int height) = 0;
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112
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113 virtual void ToggleMaximize() = 0;
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114
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115 // Must be invoked from the main SDL thread
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116 virtual void Paint() = 0;
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117 };
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118
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119
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120 class SdlOpenGLViewport : public SdlViewport
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121 {
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122 private:
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123 SdlOpenGLContext context_;
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124
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125 public:
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126 SdlOpenGLViewport(const char* title,
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127 unsigned int width,
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128 unsigned int height,
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129 bool allowDpiScaling = true);
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130
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131 virtual ~SdlOpenGLViewport();
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132
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133 virtual void Paint() ORTHANC_OVERRIDE;
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134
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135 virtual void UpdateSize(unsigned int width,
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136 unsigned int height) ORTHANC_OVERRIDE;
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137
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138 virtual void ToggleMaximize() ORTHANC_OVERRIDE;
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139 };
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142 class SdlCairoViewport : public SdlViewport
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143 {
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144 private:
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145 SdlWindow window_;
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146 SDL_Surface* sdlSurface_;
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147
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148 void CreateSdlSurfaceFromCompositor(CairoCompositor& compositor);
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149
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150 public:
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151 SdlCairoViewport(const char* title,
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152 unsigned int width,
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153 unsigned int height,
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154 bool allowDpiScaling = true);
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155
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156 virtual ~SdlCairoViewport();
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157
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158 virtual void Paint() ORTHANC_OVERRIDE;
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159
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160 virtual void UpdateSize(unsigned int width,
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161 unsigned int height) ORTHANC_OVERRIDE;
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162
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163 virtual void ToggleMaximize() ORTHANC_OVERRIDE;
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164 };
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165 }