Mercurial > hg > orthanc-stone

annotate Applications/Generic/GuiAdapter.h @ 879:12b591d5d63c am-dev

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some Qt integration (wip)
author Alain Mazy <alain@mazy.be>
date Fri, 05 Jul 2019 14:52:43 +0200
parents e3c56d4f863f
children 9953f16c304d
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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
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78 enum GuiAdapterMouseEventType
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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 };
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85
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86 const unsigned int GUIADAPTER_DELTA_PIXEL = 2973;
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87 const unsigned int GUIADAPTER_DELTA_LINE = 2974;
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88 const unsigned int GUIADAPTER_DELTA_PAGE = 2975;
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89
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90 struct GuiAdapterUiEvent;
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91 struct GuiAdapterMouseEvent;
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92 struct GuiAdapterWheelEvent;
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93 struct GuiAdapterKeyboardEvent;
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94
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95 class LockingEmitter;
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96
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97 #if 1
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98 typedef bool (*OnMouseEventFunc)(std::string canvasId, const GuiAdapterMouseEvent* mouseEvent, void* userData);
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99 typedef bool (*OnMouseWheelFunc)(std::string canvasId, const GuiAdapterWheelEvent* wheelEvent, void* userData);
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100 typedef bool (*OnKeyDownFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData);
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101 typedef bool (*OnKeyUpFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData);
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102
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103 typedef bool (*OnAnimationFrameFunc)(double time, void* userData);
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104 typedef bool (*OnWindowResizeFunc)(std::string canvasId, const GuiAdapterUiEvent* uiEvent, void* userData);
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105
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106 #else
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107
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108 #if ORTHANC_ENABLE_WASM == 1
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109 typedef EM_BOOL (*OnMouseEventFunc)(int eventType, const EmscriptenMouseEvent* mouseEvent, void* userData);
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110 typedef EM_BOOL (*OnMouseWheelFunc)(int eventType, const EmscriptenWheelEvent* wheelEvent, void* userData);
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111 typedef EM_BOOL (*OnKeyDownFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData);
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112 typedef EM_BOOL (*OnKeyUpFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData);
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113
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114 typedef EM_BOOL (*OnAnimationFrameFunc)(double time, void* userData);
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115 typedef EM_BOOL (*OnWindowResizeFunc)(int eventType, const EmscriptenUiEvent* uiEvent, void* userData);
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116 #else
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117 typedef bool (*OnMouseEventFunc)(int eventType, const SDL_Event* mouseEvent, void* userData);
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118 typedef bool (*OnMouseWheelFunc)(int eventType, const SDL_Event* wheelEvent, void* userData);
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119 typedef bool (*OnKeyDownFunc) (int eventType, const SDL_Event* keyEvent, void* userData);
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120 typedef bool (*OnKeyUpFunc) (int eventType, const SDL_Event* keyEvent, void* userData);
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121
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122 typedef bool (*OnAnimationFrameFunc)(double time, void* userData);
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123 typedef bool (*OnWindowResizeFunc)(int eventType, const GuiAdapterUiEvent* uiEvent, void* userData);
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124 #endif
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125
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126 #endif
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127 struct GuiAdapterMouseEvent {
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128 GuiAdapterMouseEventType type;
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129 //double timestamp;
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130 //long screenX;
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131 //long screenY;
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132 //long clientX;
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133 //long clientY;
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134 bool ctrlKey;
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135 bool shiftKey;
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136 bool altKey;
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137 //bool metaKey;
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138 unsigned short button;
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139 //unsigned short buttons;
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140 //long movementX;
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141 //long movementY;
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142 long targetX;
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143 long targetY;
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144 // 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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145 //long canvasX;
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146 //long canvasY;
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147 //long padding;
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148
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149 public:
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150 GuiAdapterMouseEvent()
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151 : ctrlKey(false),
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152 shiftKey(false),
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153 altKey(false)
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154 {
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155 }
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156 };
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157
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158 struct GuiAdapterWheelEvent {
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159 GuiAdapterMouseEvent mouse;
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160 double deltaX;
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161 double deltaY;
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162 unsigned long deltaMode;
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163 };
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164
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165 // we don't use any data now
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166 struct GuiAdapterUiEvent {};
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167
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168 // EmscriptenKeyboardEvent
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169 struct GuiAdapterKeyboardEvent
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170 {
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171 bool ctrlKey;
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172 bool shiftKey;
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173 bool altKey;
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174 };
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175
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176 std::ostream& operator<<(std::ostream& os, const GuiAdapterKeyboardEvent& event);
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177
843
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178 /*
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179 Mousedown event trigger when either the left or right (or middle) mouse is pressed
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180 on the object;
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181
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182 Mouseup event trigger when either the left or right (or middle) mouse is released
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183 above the object after triggered mousedown event and held.
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184
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185 Click event trigger when the only left mouse button is pressed and released on the
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186 same object, requires the Mousedown and Mouseup event happened before Click event.
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187
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188 The normal expect trigger order: onMousedown >> onMouseup >> onClick
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189
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190 Testing in Chrome v58, the time between onMouseup and onClick events are around
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191 7ms to 15ms
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192
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193 FROM: https://codingrepo.com/javascript/2017/05/19/javascript-difference-mousedown-mouseup-click-events/
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194 */
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195 #if ORTHANC_ENABLE_WASM == 1
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196 void ConvertFromPlatform(
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197 GuiAdapterUiEvent& dest,
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198 int eventType,
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199 const EmscriptenUiEvent& src);
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200
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201 void ConvertFromPlatform(
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202 GuiAdapterMouseEvent& dest,
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203 int eventType,
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204 const EmscriptenMouseEvent& src);
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205
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206 void ConvertFromPlatform(
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207 GuiAdapterWheelEvent& dest,
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208 int eventType,
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209 const EmscriptenWheelEvent& src);
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210
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211 void ConvertFromPlatform(
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212 GuiAdapterKeyboardEvent& dest,
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213 const EmscriptenKeyboardEvent& src);
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214
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215 #else
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216
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217 # if ORTHANC_ENABLE_SDL == 1
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218 void ConvertFromPlatform(
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219 GuiAdapterMouseEvent& dest,
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220 bool ctrlPressed, bool shiftPressed, bool altPressed,
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221 const SDL_Event& source);
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222
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223 void ConvertFromPlatform(
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224 GuiAdapterWheelEvent& dest,
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225 bool ctrlPressed, bool shiftPressed, bool altPressed,
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226 const SDL_Event& source);
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227
843
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228 # endif
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229
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230 #endif
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231
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232 class GuiAdapter
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233 {
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234 public:
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235 #if ORTHANC_ENABLE_THREADS == 1
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236 GuiAdapter(LockingEmitter& lockingEmitter) : lockingEmitter_(lockingEmitter)
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237 #else
850
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238 GuiAdapter()
843
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239 #endif
850
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240 {
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241 static int instanceCount = 0;
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242 ORTHANC_ASSERT(instanceCount == 0);
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243 instanceCount = 1;
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244 }
843
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245
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246 void RegisterWidget(boost::shared_ptr<IGuiAdapterWidget> widget);
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247
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248 /**
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249 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize);
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250
858
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251 emscripten_set_wheel_callback("mycanvas1", widget1_.get(), false, OnXXXMouseWheel);
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252 emscripten_set_wheel_callback("mycanvas2", widget2_.get(), false, OnXXXMouseWheel);
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253 emscripten_set_wheel_callback("mycanvas3", widget3_.get(), false, OnXXXMouseWheel);
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254
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255 emscripten_set_keydown_callback("#window", NULL, false, OnKeyDown);
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256 emscripten_set_keyup_callback("#window", NULL, false, OnKeyUp);
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257
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258 emscripten_request_animation_frame_loop(OnAnimationFrame, NULL);
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259
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260 SDL:
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261 see https://wiki.libsdl.org/SDL_CaptureMouse
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262
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263 */
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264
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265 void SetMouseDownCallback(std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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266 void SetMouseMoveCallback(std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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267 void SetMouseUpCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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268 void SetWheelCallback (std::string canvasId, void* userData, bool capture, OnMouseWheelFunc func);
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269 void SetKeyDownCallback (std::string canvasId, void* userData, bool capture, OnKeyDownFunc func);
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270 void SetKeyUpCallback (std::string canvasId, void* userData, bool capture, OnKeyUpFunc func);
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271
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272 // if you pass "#window", under SDL, then any Window resize will trigger the callback
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273 void SetResizeCallback (std::string canvasId, void* userData, bool capture, OnWindowResizeFunc func);
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274
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275 void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData);
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276
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277 // TODO: implement and call to remove canvases [in SDL, although code should be generic]
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278 void SetOnExitCallback();
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279
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280 // void
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281 // OnWindowResize
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282 // oracle
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283 // broker
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284
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285 /**
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286 Under SDL, this function does NOT return until all windows have been closed.
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287 Under wasm, it returns without doing anything, since the event loop is managed
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288 by the browser.
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289 */
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290 void Run();
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291
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292 #if ORTHANC_ENABLE_WASM != 1
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293 /**
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294 This method must be called in order for callback handler to be allowed to
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295 be registered.
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296
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297 We'll retrieve its name and use it as the canvas name in all subsequent
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298 calls
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299 */
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300 //void RegisterSdlWindow(SDL_Window* window);
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301 //void UnregisterSdlWindow(SDL_Window* window);
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302 #endif
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303
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304 private:
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305
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306 #if ORTHANC_ENABLE_THREADS == 1
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307 /**
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308 This object is used by the multithreaded Oracle to serialize access to
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309 shared data. We need to use it as soon as we access the state.
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310 */
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311 LockingEmitter& lockingEmitter_;
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312 #endif
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313
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314 /**
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315 In SDL, this executes all the registered headers
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316 */
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317 void OnAnimationFrame();
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318
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319 //void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData);
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320 std::vector<std::pair<OnAnimationFrameFunc, void*> >
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321 animationFrameHandlers_;
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322
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323 void OnResize();
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324
858
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325 #if ORTHANC_ENABLE_SDL == 1
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326 template<typename Func>
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327 struct EventHandlerData
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328 {
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329 EventHandlerData(std::string canvasName, Func func, void* userData)
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330 : canvasName(canvasName)
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331 , func(func)
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332 , userData(userData)
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333 {
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334 }
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335
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336 std::string canvasName;
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337 Func func;
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338 void* userData;
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339 };
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340 std::vector<EventHandlerData<OnWindowResizeFunc> > resizeHandlers_;
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341 std::vector<EventHandlerData<OnMouseEventFunc > > mouseDownHandlers_;
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342 std::vector<EventHandlerData<OnMouseEventFunc > > mouseMoveHandlers_;
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343 std::vector<EventHandlerData<OnMouseEventFunc > > mouseUpHandlers_;
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344 std::vector<EventHandlerData<OnMouseWheelFunc > > mouseWheelHandlers_;
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345
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346
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347 /**
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348 This executes all the registered headers if needed (in wasm, the browser
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349 deals with this)
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350 */
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351 void OnMouseEvent(uint32_t windowID, const GuiAdapterMouseEvent& event);
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352
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353 /**
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354 Same remark as OnMouseEvent
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355 */
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356 void OnMouseWheelEvent(uint32_t windowID, const GuiAdapterWheelEvent& event);
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357
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358 boost::shared_ptr<IGuiAdapterWidget> GetWidgetFromWindowId();
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359
843
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360 #endif
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361
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362 /**
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363 This executes all the registered headers if needed (in wasm, the browser
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364 deals with this)
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365 */
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366 void ViewportsUpdateSize();
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367
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368 std::vector<boost::weak_ptr<IGuiAdapterWidget> > widgets_;
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369
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370 template<typename F> void VisitWidgets(F func)
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371 {
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372 for (size_t i = 0; i < widgets_.size(); i++)
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373 {
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374 boost::shared_ptr<IGuiAdapterWidget> widget = widgets_[i].lock();
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375 func(widget);
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376 }
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377 }
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378 };
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379 }