Mercurial > hg > orthanc-stone

annotate Samples/Sdl/SdlHelpers.h @ 1404:3e644f6fadd4

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Three-viewport is now OK in SDL and Wasm
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 29 Apr 2020 22:06:24 +0200
parents ffdb82850e98
children 5d7ee14dc1eb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #pragma once
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2
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3 #if ORTHANC_ENABLE_SDL != 1
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4 # error This file cannot be used if ORTHANC_ENABLE_SDL != 1
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5 #endif
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6
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7 #include <Framework/Viewport/SdlViewport.h>
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8
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9 #include <boost/shared_ptr.hpp>
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10
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11 #include <SDL.h>
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12
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13 #include <map>
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14 #include <string>
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15
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16 namespace OrthancStoneHelpers
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17 {
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18
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19 inline OrthancStone::KeyboardModifiers GetKeyboardModifiers(const uint8_t* keyboardState,
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20 const int scancodeCount)
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21 {
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22 using namespace OrthancStone;
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23 int result = KeyboardModifiers_None;
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24
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25 if (keyboardState != NULL)
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26 {
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27 if (SDL_SCANCODE_LSHIFT < scancodeCount &&
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28 keyboardState[SDL_SCANCODE_LSHIFT])
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29 {
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30 result |= KeyboardModifiers_Shift;
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31 }
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32
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33 if (SDL_SCANCODE_RSHIFT < scancodeCount &&
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34 keyboardState[SDL_SCANCODE_RSHIFT])
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35 {
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36 result |= KeyboardModifiers_Shift;
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37 }
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38
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39 if (SDL_SCANCODE_LCTRL < scancodeCount &&
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40 keyboardState[SDL_SCANCODE_LCTRL])
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41 {
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42 result |= KeyboardModifiers_Control;
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43 }
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44
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45 if (SDL_SCANCODE_RCTRL < scancodeCount &&
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46 keyboardState[SDL_SCANCODE_RCTRL])
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47 {
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48 result |= KeyboardModifiers_Control;
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49 }
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50
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51 if (SDL_SCANCODE_LALT < scancodeCount &&
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52 keyboardState[SDL_SCANCODE_LALT])
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53 {
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54 result |= KeyboardModifiers_Alt;
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55 }
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56
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57 if (SDL_SCANCODE_RALT < scancodeCount &&
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58 keyboardState[SDL_SCANCODE_RALT])
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59 {
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60 result |= KeyboardModifiers_Alt;
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61 }
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62 }
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63
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64 return static_cast<KeyboardModifiers>(result);
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65 }
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66
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67
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68 inline void GetPointerEvent(OrthancStone::PointerEvent& p,
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69 const OrthancStone::ICompositor& compositor,
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70 SDL_Event event,
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71 const uint8_t* keyboardState,
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72 const int scancodeCount)
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73 {
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74 using namespace OrthancStone;
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75 KeyboardModifiers modifiers = GetKeyboardModifiers(keyboardState, scancodeCount);
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76
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77 switch (event.button.button)
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78 {
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79 case SDL_BUTTON_LEFT:
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80 p.SetMouseButton(OrthancStone::MouseButton_Left);
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81 break;
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82
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83 case SDL_BUTTON_RIGHT:
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84 p.SetMouseButton(OrthancStone::MouseButton_Right);
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85 break;
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86
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87 case SDL_BUTTON_MIDDLE:
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88 p.SetMouseButton(OrthancStone::MouseButton_Middle);
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89 break;
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90
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91 default:
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92 p.SetMouseButton(OrthancStone::MouseButton_None);
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93 break;
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94 }
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95
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96 p.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y));
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97 p.SetAltModifier(modifiers & KeyboardModifiers_Alt);
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98 p.SetControlModifier(modifiers & KeyboardModifiers_Control);
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99 p.SetShiftModifier(modifiers & KeyboardModifiers_Shift);
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100 }
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101
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102 static boost::shared_ptr<OrthancStone::SdlViewport> GetSdlViewportFromWindowId(
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103 const std::vector<boost::shared_ptr<OrthancStone::SdlViewport> >& viewports,
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104 Uint32 windowID)
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105 {
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106 using namespace OrthancStone;
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107 for (size_t i = 0; i < viewports.size(); ++i)
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108 {
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109 boost::shared_ptr<IViewport> viewport = viewports[i];
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110 boost::shared_ptr<SdlViewport> sdlViewport = boost::dynamic_pointer_cast<SdlViewport>(viewport);
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111 Uint32 curWindowID = sdlViewport->GetSdlWindowId();
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112 if (windowID == curWindowID)
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113 return sdlViewport;
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114 }
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115 return NULL;
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116 }
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117
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118 inline void SdlRunLoop(const std::vector<boost::shared_ptr<OrthancStone::SdlViewport> >& viewports,
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119 OrthancStone::IViewportInteractor& interactor)
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120 {
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121 using namespace OrthancStone;
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122 {
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123 int scancodeCount = 0;
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124 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount);
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125
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126 bool stop = false;
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127 while (!stop)
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128 {
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129 bool paint = false;
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130 SDL_Event event;
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131 while (SDL_PollEvent(&event))
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132 {
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133 if (event.type == SDL_QUIT)
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134 {
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135 stop = true;
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136 break;
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137 }
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138 else if (event.type == SDL_WINDOWEVENT &&
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139 (event.window.event == SDL_WINDOWEVENT_RESIZED ||
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140 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED))
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141 {
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142 boost::shared_ptr<SdlViewport> viewport = GetSdlViewportFromWindowId(
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143 viewports, event.window.windowID);
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144 viewport->UpdateSize(event.window.data1, event.window.data2);
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145 }
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146 else if (event.type == SDL_WINDOWEVENT &&
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147 (event.window.event == SDL_WINDOWEVENT_SHOWN ||
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148 event.window.event == SDL_WINDOWEVENT_EXPOSED))
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149 {
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150 boost::shared_ptr<SdlViewport> viewport = GetSdlViewportFromWindowId(
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151 viewports, event.window.windowID);
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152 viewport->Paint();
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153 }
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154 else if (event.type == SDL_KEYDOWN &&
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155 event.key.repeat == 0 /* Ignore key bounce */)
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156 {
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157 boost::shared_ptr<SdlViewport> viewport = GetSdlViewportFromWindowId(
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158 viewports, event.window.windowID);
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159
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160 switch (event.key.keysym.sym)
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161 {
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162 case SDLK_f:
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163 viewport->ToggleMaximize();
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164 break;
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165
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166 case SDLK_s:
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167 {
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168 std::unique_ptr<OrthancStone::IViewport::ILock> lock(viewport->Lock());
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169 lock->GetCompositor().FitContent(lock->GetController().GetScene());
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170 lock->Invalidate();
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171 }
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172 break;
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173
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174 case SDLK_q:
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175 stop = true;
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176 break;
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177
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178 default:
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179 break;
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180 }
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181 }
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182 else if (event.type == SDL_MOUSEBUTTONDOWN ||
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183 event.type == SDL_MOUSEMOTION ||
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184 event.type == SDL_MOUSEBUTTONUP)
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185 {
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186 boost::shared_ptr<SdlViewport> viewport = GetSdlViewportFromWindowId(
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187 viewports, event.window.windowID);
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188
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189 std::auto_ptr<OrthancStone::IViewport::ILock> lock(viewport->Lock());
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190 if (lock->HasCompositor())
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191 {
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192 OrthancStone::PointerEvent p;
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193 OrthancStoneHelpers::GetPointerEvent(p, lock->GetCompositor(),
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194 event, keyboardState, scancodeCount);
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195
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196 switch (event.type)
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197 {
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198 case SDL_MOUSEBUTTONDOWN:
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199 lock->GetController().HandleMousePress(interactor, p,
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200 lock->GetCompositor().GetCanvasWidth(),
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201 lock->GetCompositor().GetCanvasHeight());
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202 lock->Invalidate();
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203 break;
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204
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205 case SDL_MOUSEMOTION:
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206 if (lock->GetController().HandleMouseMove(p))
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207 {
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208 lock->Invalidate();
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209 }
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210 break;
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211
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212 case SDL_MOUSEBUTTONUP:
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213 lock->GetController().HandleMouseRelease(p);
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214 lock->Invalidate();
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215 break;
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216
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217 default:
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218 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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219 }
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220 }
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221 }
1404
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222 else
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223 {
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224 for (size_t i = 0; i < viewports.size(); ++i)
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225 {
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226 boost::shared_ptr<SdlViewport> viewport = viewports[i];
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227 if (viewport->IsRefreshEvent(event))
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228 viewport->Paint();
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229 }
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230 }
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231 }
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232 }
1404
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233 // Small delay to avoid using 100% of CPU
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234 SDL_Delay(1);
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235 }
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236 }
1404
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237 }
1392
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238
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diff changeset
239