Mercurial > hg > orthanc-stone

annotate Applications/Generic/GuiAdapter.h @ 880:9953f16c304d am-dev

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Merge
author Alain Mazy <alain@mazy.be>
date Fri, 05 Jul 2019 15:33:02 +0200
parents 12b591d5d63c f0bf971a1e31
children 401808e7ff2e
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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
845
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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
879
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70 enum GuiAdapterMouseButtonType
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71 {
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72 GUIADAPTER_MOUSEBUTTON_LEFT = 0,
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73 GUIADAPTER_MOUSEBUTTON_MIDDLE = 1,
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74 GUIADAPTER_MOUSEBUTTON_RIGHT = 2
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75 };
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76
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77
861
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78 enum GuiAdapterHidEventType
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79 {
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80 GUIADAPTER_EVENT_MOUSEDOWN = 1973,
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81 GUIADAPTER_EVENT_MOUSEMOVE = 1974,
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82 GUIADAPTER_EVENT_MOUSEUP = 1975,
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83 GUIADAPTER_EVENT_WHEEL = 1976,
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84 GUIADAPTER_EVENT_KEYDOWN = 1977,
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85 GUIADAPTER_EVENT_KEYUP = 1978,
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86 };
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87
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88 const unsigned int GUIADAPTER_DELTA_PIXEL = 2973;
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89 const unsigned int GUIADAPTER_DELTA_LINE = 2974;
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90 const unsigned int GUIADAPTER_DELTA_PAGE = 2975;
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91
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92 struct GuiAdapterUiEvent;
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93 struct GuiAdapterMouseEvent;
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94 struct GuiAdapterWheelEvent;
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95 struct GuiAdapterKeyboardEvent;
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96
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97 class LockingEmitter;
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98
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99 #if 1
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100 typedef bool (*OnMouseEventFunc)(std::string canvasId, const GuiAdapterMouseEvent* mouseEvent, void* userData);
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101 typedef bool (*OnMouseWheelFunc)(std::string canvasId, const GuiAdapterWheelEvent* wheelEvent, void* userData);
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102 typedef bool (*OnKeyDownFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData);
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103 typedef bool (*OnKeyUpFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData);
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104
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105 typedef bool (*OnAnimationFrameFunc)(double time, void* userData);
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106 typedef bool (*OnWindowResizeFunc)(std::string canvasId, const GuiAdapterUiEvent* uiEvent, void* userData);
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107
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108 #else
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109
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110 #if ORTHANC_ENABLE_WASM == 1
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111 typedef EM_BOOL (*OnMouseEventFunc)(int eventType, const EmscriptenMouseEvent* mouseEvent, void* userData);
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112 typedef EM_BOOL (*OnMouseWheelFunc)(int eventType, const EmscriptenWheelEvent* wheelEvent, void* userData);
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113 typedef EM_BOOL (*OnKeyDownFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData);
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114 typedef EM_BOOL (*OnKeyUpFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData);
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115
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116 typedef EM_BOOL (*OnAnimationFrameFunc)(double time, void* userData);
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117 typedef EM_BOOL (*OnWindowResizeFunc)(int eventType, const EmscriptenUiEvent* uiEvent, void* userData);
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118 #else
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119 typedef bool (*OnMouseEventFunc)(int eventType, const SDL_Event* mouseEvent, void* userData);
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120 typedef bool (*OnMouseWheelFunc)(int eventType, const SDL_Event* wheelEvent, void* userData);
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121 typedef bool (*OnKeyDownFunc) (int eventType, const SDL_Event* keyEvent, void* userData);
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122 typedef bool (*OnKeyUpFunc) (int eventType, const SDL_Event* keyEvent, void* userData);
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123
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124 typedef bool (*OnAnimationFrameFunc)(double time, void* userData);
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125 typedef bool (*OnWindowResizeFunc)(int eventType, const GuiAdapterUiEvent* uiEvent, void* userData);
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126 #endif
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127
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128 #endif
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129 struct GuiAdapterMouseEvent
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130 {
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131 GuiAdapterHidEventType type;
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132 //double timestamp;
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133 //long screenX;
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134 //long screenY;
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135 //long clientX;
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136 //long clientY;
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137 bool ctrlKey;
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138 bool shiftKey;
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139 bool altKey;
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140 //bool metaKey;
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141 unsigned short button;
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142 //unsigned short buttons;
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143 //long movementX;
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144 //long movementY;
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145 long targetX;
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146 long targetY;
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147 // 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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148 //long canvasX;
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149 //long canvasY;
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150 //long padding;
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151
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152 public:
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153 GuiAdapterMouseEvent()
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154 : ctrlKey(false),
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155 shiftKey(false),
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156 altKey(false)
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157 {
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158 }
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159 };
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160
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161 struct GuiAdapterWheelEvent {
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162 GuiAdapterMouseEvent mouse;
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163 double deltaX;
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164 double deltaY;
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165 unsigned long deltaMode;
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166 };
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167
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168 // we don't use any data now
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169 struct GuiAdapterUiEvent {};
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170
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171 // EmscriptenKeyboardEvent
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172 struct GuiAdapterKeyboardEvent
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173 {
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174 GuiAdapterHidEventType type;
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175 char sym[32];
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176 bool ctrlKey;
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177 bool shiftKey;
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178 bool altKey;
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179 };
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180
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181 std::ostream& operator<<(std::ostream& os, const GuiAdapterKeyboardEvent& event);
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182
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183 /*
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184 Mousedown event trigger when either the left or right (or middle) mouse is pressed
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185 on the object;
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186
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187 Mouseup event trigger when either the left or right (or middle) mouse is released
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188 above the object after triggered mousedown event and held.
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189
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190 Click event trigger when the only left mouse button is pressed and released on the
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191 same object, requires the Mousedown and Mouseup event happened before Click event.
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192
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193 The normal expect trigger order: onMousedown >> onMouseup >> onClick
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194
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195 Testing in Chrome v58, the time between onMouseup and onClick events are around
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196 7ms to 15ms
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197
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198 FROM: https://codingrepo.com/javascript/2017/05/19/javascript-difference-mousedown-mouseup-click-events/
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199 */
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200 #if ORTHANC_ENABLE_WASM == 1
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201 void ConvertFromPlatform(GuiAdapterUiEvent& dest, int eventType, const EmscriptenUiEvent& src);
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202
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203 void ConvertFromPlatform(GuiAdapterMouseEvent& dest, int eventType, const EmscriptenMouseEvent& src);
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204
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205 void ConvertFromPlatform(GuiAdapterWheelEvent& dest, int eventType, const EmscriptenWheelEvent& src);
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206
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207 void ConvertFromPlatform(GuiAdapterKeyboardEvent& dest, const EmscriptenKeyboardEvent& src);
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208 #else
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209
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210 # if ORTHANC_ENABLE_SDL == 1
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211 void ConvertFromPlatform(GuiAdapterMouseEvent& dest, bool ctrlPressed, bool shiftPressed, bool altPressed, const SDL_Event& source);
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212
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213 void ConvertFromPlatform(GuiAdapterWheelEvent& dest, bool ctrlPressed, bool shiftPressed, bool altPressed, const SDL_Event& source);
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214
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215 void ConvertFromPlatform(GuiAdapterKeyboardEvent& dest, const SDL_Event& source);
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216
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217 # endif
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218
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219 #endif
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220
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221 class GuiAdapter
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222 {
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223 public:
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224 #if ORTHANC_ENABLE_THREADS == 1
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225 GuiAdapter(LockingEmitter& lockingEmitter) : lockingEmitter_(lockingEmitter)
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226 #else
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227 GuiAdapter()
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228 #endif
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229 {
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230 static int instanceCount = 0;
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231 ORTHANC_ASSERT(instanceCount == 0);
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232 instanceCount = 1;
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233 }
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234
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235 void RegisterWidget(boost::shared_ptr<IGuiAdapterWidget> widget);
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236
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237 /**
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238 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize);
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239
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240 emscripten_set_wheel_callback("mycanvas1", widget1_.get(), false, OnXXXMouseWheel);
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241 emscripten_set_wheel_callback("mycanvas2", widget2_.get(), false, OnXXXMouseWheel);
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242 emscripten_set_wheel_callback("mycanvas3", widget3_.get(), false, OnXXXMouseWheel);
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243
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244 emscripten_set_keydown_callback("#window", NULL, false, OnKeyDown);
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245 emscripten_set_keyup_callback("#window", NULL, false, OnKeyUp);
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246
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247 emscripten_request_animation_frame_loop(OnAnimationFrame, NULL);
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248
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249 SDL:
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250 see https://wiki.libsdl.org/SDL_CaptureMouse
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251
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252 */
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253
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254 void SetMouseDownCallback(std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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255 void SetMouseMoveCallback(std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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256 void SetMouseUpCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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257 void SetWheelCallback (std::string canvasId, void* userData, bool capture, OnMouseWheelFunc func);
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258 void SetKeyDownCallback (std::string canvasId, void* userData, bool capture, OnKeyDownFunc func);
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259 void SetKeyUpCallback (std::string canvasId, void* userData, bool capture, OnKeyUpFunc func);
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260
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261 // if you pass "#window", under SDL, then any Window resize will trigger the callback
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262 void SetResizeCallback (std::string canvasId, void* userData, bool capture, OnWindowResizeFunc func);
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263
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264 void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData);
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265
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266 // TODO: implement and call to remove canvases [in SDL, although code should be generic]
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267 void SetOnExitCallback();
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268
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269 // void
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270 // OnWindowResize
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271 // oracle
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272 // broker
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273
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274 /**
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275 Under SDL, this function does NOT return until all windows have been closed.
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276 Under wasm, it returns without doing anything, since the event loop is managed
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277 by the browser.
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278 */
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279 void Run();
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280
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281 #if ORTHANC_ENABLE_WASM != 1
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282 /**
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283 This method must be called in order for callback handler to be allowed to
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284 be registered.
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285
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286 We'll retrieve its name and use it as the canvas name in all subsequent
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287 calls
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288 */
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289 //void RegisterSdlWindow(SDL_Window* window);
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290 //void UnregisterSdlWindow(SDL_Window* window);
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291 #endif
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292
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293 private:
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294
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295 #if ORTHANC_ENABLE_THREADS == 1
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296 /**
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297 This object is used by the multithreaded Oracle to serialize access to
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298 shared data. We need to use it as soon as we access the state.
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299 */
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300 LockingEmitter& lockingEmitter_;
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301 #endif
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302
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303 /**
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304 In SDL, this executes all the registered headers
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305 */
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306 void OnAnimationFrame();
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307
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308 //void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData);
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309 std::vector<std::pair<OnAnimationFrameFunc, void*> >
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310 animationFrameHandlers_;
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311
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312 void OnResize();
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313
858
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314 #if ORTHANC_ENABLE_SDL == 1
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315 template<typename Func>
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316 struct EventHandlerData
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317 {
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318 EventHandlerData(std::string canvasName, Func func, void* userData)
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319 : canvasName(canvasName)
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320 , func(func)
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321 , userData(userData)
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322 {
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323 }
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324
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325 std::string canvasName;
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326 Func func;
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327 void* userData;
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328 };
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329 std::vector<EventHandlerData<OnWindowResizeFunc> > resizeHandlers_;
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330 std::vector<EventHandlerData<OnMouseEventFunc > > mouseDownHandlers_;
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331 std::vector<EventHandlerData<OnMouseEventFunc > > mouseMoveHandlers_;
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332 std::vector<EventHandlerData<OnMouseEventFunc > > mouseUpHandlers_;
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333 std::vector<EventHandlerData<OnMouseWheelFunc > > mouseWheelHandlers_;
861
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334 std::vector<EventHandlerData<OnKeyDownFunc > > keyDownHandlers_;
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335 std::vector<EventHandlerData<OnKeyUpFunc > > keyUpHandlers_;
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336
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337 /**
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338 This executes all the registered headers if needed (in wasm, the browser
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339 deals with this)
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340 */
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341 void OnMouseEvent(uint32_t windowID, const GuiAdapterMouseEvent& event);
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342
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343 void OnKeyboardEvent(uint32_t windowID, const GuiAdapterKeyboardEvent& event);
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344
858
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345 /**
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346 Same remark as OnMouseEvent
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347 */
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348 void OnMouseWheelEvent(uint32_t windowID, const GuiAdapterWheelEvent& event);
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349
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350 boost::shared_ptr<IGuiAdapterWidget> GetWidgetFromWindowId();
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351
843
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352 #endif
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353
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354 /**
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355 This executes all the registered headers if needed (in wasm, the browser
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356 deals with this)
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357 */
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358 void ViewportsUpdateSize();
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359
845
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360 std::vector<boost::weak_ptr<IGuiAdapterWidget> > widgets_;
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361
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362 template<typename F> void VisitWidgets(F func)
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363 {
845
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364 for (size_t i = 0; i < widgets_.size(); i++)
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365 {
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366 boost::shared_ptr<IGuiAdapterWidget> widget = widgets_[i].lock();
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367 func(widget);
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368 }
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369 }
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370 };
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371 }