Mercurial > hg > orthanc-stone
annotate Applications/Generic/GuiAdapter.h @ 861:f0bf971a1e31
Keyboard event routing (handling done in app)
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Mon, 24 Jun 2019 14:57:55 +0200 |
parents | e3c56d4f863f |
children | 9953f16c304d |
rev | line source |
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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 #pragma once |
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21 |
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22 #include <string> |
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23 |
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24 #if ORTHANC_ENABLE_WASM != 1 |
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25 # ifdef __EMSCRIPTEN__ |
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26 # error __EMSCRIPTEN__ is defined and ORTHANC_ENABLE_WASM != 1 |
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27 # endif |
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28 #endif |
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29 |
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30 #if ORTHANC_ENABLE_WASM == 1 |
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31 # ifndef __EMSCRIPTEN__ |
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32 # error __EMSCRIPTEN__ is not defined and ORTHANC_ENABLE_WASM == 1 |
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33 # endif |
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34 #endif |
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35 |
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36 #if ORTHANC_ENABLE_WASM == 1 |
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37 # include <emscripten/html5.h> |
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38 #else |
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39 # if ORTHANC_ENABLE_SDL == 1 |
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40 # include <SDL.h> |
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41 # endif |
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42 #endif |
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43 |
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44 #include "../../Framework/StoneException.h" |
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45 |
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46 #if ORTHANC_ENABLE_THREADS != 1 |
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47 # include "../../Framework/Messages/LockingEmitter.h" |
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48 #endif |
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49 |
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50 #include <vector> |
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51 #include <boost/shared_ptr.hpp> |
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52 #include <boost/weak_ptr.hpp> |
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53 |
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54 namespace OrthancStone |
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55 { |
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56 |
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57 /** |
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58 This interface is used to store the widgets that are controlled by the |
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59 GuiAdapter and receive event callbacks. |
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60 The callbacks may possibly be downcast (using dynamic_cast, for safety) \ |
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61 to the actual widget type |
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62 */ |
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63 class IGuiAdapterWidget |
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64 { |
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65 public: |
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66 virtual ~IGuiAdapterWidget() {} |
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67 |
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68 }; |
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69 |
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70 enum GuiAdapterHidEventType |
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71 { |
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72 GUIADAPTER_EVENT_MOUSEDOWN = 1973, |
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73 GUIADAPTER_EVENT_MOUSEMOVE = 1974, |
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74 GUIADAPTER_EVENT_MOUSEUP = 1975, |
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75 GUIADAPTER_EVENT_WHEEL = 1976, |
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76 GUIADAPTER_EVENT_KEYDOWN = 1977, |
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77 GUIADAPTER_EVENT_KEYUP = 1978, |
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78 }; |
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79 |
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80 const unsigned int GUIADAPTER_DELTA_PIXEL = 2973; |
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81 const unsigned int GUIADAPTER_DELTA_LINE = 2974; |
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82 const unsigned int GUIADAPTER_DELTA_PAGE = 2975; |
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83 |
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84 struct GuiAdapterUiEvent; |
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85 struct GuiAdapterMouseEvent; |
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86 struct GuiAdapterWheelEvent; |
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87 struct GuiAdapterKeyboardEvent; |
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88 |
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89 class LockingEmitter; |
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90 |
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91 #if 1 |
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92 typedef bool (*OnMouseEventFunc)(std::string canvasId, const GuiAdapterMouseEvent* mouseEvent, void* userData); |
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93 typedef bool (*OnMouseWheelFunc)(std::string canvasId, const GuiAdapterWheelEvent* wheelEvent, void* userData); |
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94 typedef bool (*OnKeyDownFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData); |
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95 typedef bool (*OnKeyUpFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData); |
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96 |
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97 typedef bool (*OnAnimationFrameFunc)(double time, void* userData); |
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98 typedef bool (*OnWindowResizeFunc)(std::string canvasId, const GuiAdapterUiEvent* uiEvent, void* userData); |
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99 |
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100 #else |
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101 |
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102 #if ORTHANC_ENABLE_WASM == 1 |
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103 typedef EM_BOOL (*OnMouseEventFunc)(int eventType, const EmscriptenMouseEvent* mouseEvent, void* userData); |
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104 typedef EM_BOOL (*OnMouseWheelFunc)(int eventType, const EmscriptenWheelEvent* wheelEvent, void* userData); |
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105 typedef EM_BOOL (*OnKeyDownFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData); |
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106 typedef EM_BOOL (*OnKeyUpFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData); |
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107 |
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108 typedef EM_BOOL (*OnAnimationFrameFunc)(double time, void* userData); |
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109 typedef EM_BOOL (*OnWindowResizeFunc)(int eventType, const EmscriptenUiEvent* uiEvent, void* userData); |
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110 #else |
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111 typedef bool (*OnMouseEventFunc)(int eventType, const SDL_Event* mouseEvent, void* userData); |
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112 typedef bool (*OnMouseWheelFunc)(int eventType, const SDL_Event* wheelEvent, void* userData); |
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113 typedef bool (*OnKeyDownFunc) (int eventType, const SDL_Event* keyEvent, void* userData); |
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114 typedef bool (*OnKeyUpFunc) (int eventType, const SDL_Event* keyEvent, void* userData); |
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115 |
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116 typedef bool (*OnAnimationFrameFunc)(double time, void* userData); |
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117 typedef bool (*OnWindowResizeFunc)(int eventType, const GuiAdapterUiEvent* uiEvent, void* userData); |
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118 #endif |
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119 |
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120 #endif |
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121 struct GuiAdapterMouseEvent |
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122 { |
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123 GuiAdapterHidEventType type; |
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124 //double timestamp; |
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125 //long screenX; |
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126 //long screenY; |
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127 //long clientX; |
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128 //long clientY; |
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129 bool ctrlKey; |
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130 bool shiftKey; |
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131 bool altKey; |
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132 //bool metaKey; |
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133 unsigned short button; |
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134 //unsigned short buttons; |
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135 //long movementX; |
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136 //long movementY; |
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137 long targetX; |
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138 long targetY; |
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139 // canvasX and canvasY are deprecated - there no longer exists a Module['canvas'] object, so canvasX/Y are no longer reported (register a listener on canvas directly to get canvas coordinates, or translate manually) |
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140 //long canvasX; |
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141 //long canvasY; |
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142 //long padding; |
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143 }; |
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144 |
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145 struct GuiAdapterWheelEvent { |
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146 GuiAdapterMouseEvent mouse; |
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147 double deltaX; |
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148 double deltaY; |
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149 unsigned long deltaMode; |
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150 }; |
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151 |
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152 // we don't use any data now |
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153 struct GuiAdapterUiEvent {}; |
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154 |
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155 // EmscriptenKeyboardEvent |
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156 struct GuiAdapterKeyboardEvent |
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157 { |
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158 GuiAdapterHidEventType type; |
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159 char sym[32]; |
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160 bool ctrlKey; |
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161 bool shiftKey; |
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162 bool altKey; |
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163 }; |
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164 |
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165 std::ostream& operator<<(std::ostream& os, const GuiAdapterKeyboardEvent& event); |
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166 |
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167 /* |
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168 Mousedown event trigger when either the left or right (or middle) mouse is pressed |
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169 on the object; |
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170 |
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171 Mouseup event trigger when either the left or right (or middle) mouse is released |
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172 above the object after triggered mousedown event and held. |
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173 |
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174 Click event trigger when the only left mouse button is pressed and released on the |
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175 same object, requires the Mousedown and Mouseup event happened before Click event. |
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176 |
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177 The normal expect trigger order: onMousedown >> onMouseup >> onClick |
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178 |
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179 Testing in Chrome v58, the time between onMouseup and onClick events are around |
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180 7ms to 15ms |
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181 |
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182 FROM: https://codingrepo.com/javascript/2017/05/19/javascript-difference-mousedown-mouseup-click-events/ |
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183 */ |
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184 #if ORTHANC_ENABLE_WASM == 1 |
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185 void ConvertFromPlatform(GuiAdapterUiEvent& dest, int eventType, const EmscriptenUiEvent& src); |
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186 |
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187 void ConvertFromPlatform(GuiAdapterMouseEvent& dest, int eventType, const EmscriptenMouseEvent& src); |
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188 |
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189 void ConvertFromPlatform(GuiAdapterWheelEvent& dest, int eventType, const EmscriptenWheelEvent& src); |
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190 |
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191 void ConvertFromPlatform(GuiAdapterKeyboardEvent& dest, const EmscriptenKeyboardEvent& src); |
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192 #else |
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193 |
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194 # if ORTHANC_ENABLE_SDL == 1 |
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195 void ConvertFromPlatform(GuiAdapterMouseEvent& dest, bool ctrlPressed, bool shiftPressed, bool altPressed, const SDL_Event& source); |
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196 |
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197 void ConvertFromPlatform(GuiAdapterWheelEvent& dest, bool ctrlPressed, bool shiftPressed, bool altPressed, const SDL_Event& source); |
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198 |
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199 void ConvertFromPlatform(GuiAdapterKeyboardEvent& dest, const SDL_Event& source); |
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200 |
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201 # endif |
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202 |
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203 #endif |
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204 |
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205 class GuiAdapter |
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206 { |
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207 public: |
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208 #if ORTHANC_ENABLE_THREADS == 1 |
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209 GuiAdapter(LockingEmitter& lockingEmitter) : lockingEmitter_(lockingEmitter) |
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210 #else |
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211 GuiAdapter() |
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212 #endif |
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213 { |
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214 static int instanceCount = 0; |
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215 ORTHANC_ASSERT(instanceCount == 0); |
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216 instanceCount = 1; |
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217 } |
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218 |
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219 void RegisterWidget(boost::shared_ptr<IGuiAdapterWidget> widget); |
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220 |
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221 /** |
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222 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize); |
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223 |
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224 emscripten_set_wheel_callback("mycanvas1", widget1_.get(), false, OnXXXMouseWheel); |
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225 emscripten_set_wheel_callback("mycanvas2", widget2_.get(), false, OnXXXMouseWheel); |
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226 emscripten_set_wheel_callback("mycanvas3", widget3_.get(), false, OnXXXMouseWheel); |
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227 |
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228 emscripten_set_keydown_callback("#window", NULL, false, OnKeyDown); |
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229 emscripten_set_keyup_callback("#window", NULL, false, OnKeyUp); |
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230 |
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231 emscripten_request_animation_frame_loop(OnAnimationFrame, NULL); |
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232 |
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233 SDL: |
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234 see https://wiki.libsdl.org/SDL_CaptureMouse |
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235 |
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236 */ |
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237 |
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238 void SetMouseDownCallback(std::string canvasId, void* userData, bool capture, OnMouseEventFunc func); |
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239 void SetMouseMoveCallback(std::string canvasId, void* userData, bool capture, OnMouseEventFunc func); |
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240 void SetMouseUpCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func); |
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241 void SetWheelCallback (std::string canvasId, void* userData, bool capture, OnMouseWheelFunc func); |
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242 void SetKeyDownCallback (std::string canvasId, void* userData, bool capture, OnKeyDownFunc func); |
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243 void SetKeyUpCallback (std::string canvasId, void* userData, bool capture, OnKeyUpFunc func); |
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244 |
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245 // if you pass "#window", under SDL, then any Window resize will trigger the callback |
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246 void SetResizeCallback (std::string canvasId, void* userData, bool capture, OnWindowResizeFunc func); |
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247 |
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248 void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData); |
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249 |
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250 // TODO: implement and call to remove canvases [in SDL, although code should be generic] |
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251 void SetOnExitCallback(); |
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252 |
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253 // void |
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254 // OnWindowResize |
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255 // oracle |
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256 // broker |
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257 |
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258 /** |
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259 Under SDL, this function does NOT return until all windows have been closed. |
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260 Under wasm, it returns without doing anything, since the event loop is managed |
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261 by the browser. |
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262 */ |
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263 void Run(); |
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264 |
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265 #if ORTHANC_ENABLE_WASM != 1 |
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266 /** |
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267 This method must be called in order for callback handler to be allowed to |
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268 be registered. |
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269 |
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270 We'll retrieve its name and use it as the canvas name in all subsequent |
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271 calls |
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272 */ |
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273 //void RegisterSdlWindow(SDL_Window* window); |
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274 //void UnregisterSdlWindow(SDL_Window* window); |
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275 #endif |
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276 |
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277 private: |
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278 |
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279 #if ORTHANC_ENABLE_THREADS == 1 |
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280 /** |
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281 This object is used by the multithreaded Oracle to serialize access to |
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282 shared data. We need to use it as soon as we access the state. |
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283 */ |
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284 LockingEmitter& lockingEmitter_; |
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285 #endif |
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286 |
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287 /** |
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288 In SDL, this executes all the registered headers |
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289 */ |
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290 void OnAnimationFrame(); |
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291 |
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292 //void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData); |
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293 std::vector<std::pair<OnAnimationFrameFunc, void*> > |
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294 animationFrameHandlers_; |
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295 |
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296 void OnResize(); |
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297 |
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298 #if ORTHANC_ENABLE_SDL == 1 |
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299 template<typename Func> |
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300 struct EventHandlerData |
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301 { |
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302 EventHandlerData(std::string canvasName, Func func, void* userData) |
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303 : canvasName(canvasName) |
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304 , func(func) |
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305 , userData(userData) |
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306 { |
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307 } |
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308 |
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309 std::string canvasName; |
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310 Func func; |
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311 void* userData; |
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312 }; |
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313 std::vector<EventHandlerData<OnWindowResizeFunc> > resizeHandlers_; |
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314 std::vector<EventHandlerData<OnMouseEventFunc > > mouseDownHandlers_; |
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315 std::vector<EventHandlerData<OnMouseEventFunc > > mouseMoveHandlers_; |
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316 std::vector<EventHandlerData<OnMouseEventFunc > > mouseUpHandlers_; |
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317 std::vector<EventHandlerData<OnMouseWheelFunc > > mouseWheelHandlers_; |
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318 std::vector<EventHandlerData<OnKeyDownFunc > > keyDownHandlers_; |
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319 std::vector<EventHandlerData<OnKeyUpFunc > > keyUpHandlers_; |
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320 |
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321 /** |
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322 This executes all the registered headers if needed (in wasm, the browser |
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323 deals with this) |
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324 */ |
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325 void OnMouseEvent(uint32_t windowID, const GuiAdapterMouseEvent& event); |
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326 |
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327 void OnKeyboardEvent(uint32_t windowID, const GuiAdapterKeyboardEvent& event); |
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328 |
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329 /** |
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330 Same remark as OnMouseEvent |
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331 */ |
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332 void OnMouseWheelEvent(uint32_t windowID, const GuiAdapterWheelEvent& event); |
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333 |
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334 boost::shared_ptr<IGuiAdapterWidget> GetWidgetFromWindowId(); |
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335 |
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336 #endif |
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337 |
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338 /** |
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339 This executes all the registered headers if needed (in wasm, the browser |
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340 deals with this) |
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341 */ |
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342 void ViewportsUpdateSize(); |
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343 |
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344 std::vector<boost::weak_ptr<IGuiAdapterWidget> > widgets_; |
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345 |
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346 template<typename F> void VisitWidgets(F func) |
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347 { |
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348 for (size_t i = 0; i < widgets_.size(); i++) |
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349 { |
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Sebastien Jodogne <s.jodogne@gmail.com>
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350 boost::shared_ptr<IGuiAdapterWidget> widget = widgets_[i].lock(); |
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351 func(widget); |
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352 } |
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353 } |
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354 }; |
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355 } |