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annotate Applications/Generic/GuiAdapter.h @ 1307:8a28a9bf8876 broker

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ViewportController now gets a ref to its parent viewport for proper lock usage
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 04 Mar 2020 10:07:37 +0100
parents 7ec8fea061b9
children 6ab03e429f06
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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) 2017-2020 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/Deprecated/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
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 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_MOUSEDBLCLICK = 1975,
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83 GUIADAPTER_EVENT_MOUSEUP = 1976,
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84 GUIADAPTER_EVENT_WHEEL = 1977,
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85 GUIADAPTER_EVENT_KEYDOWN = 1978,
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86 GUIADAPTER_EVENT_KEYUP = 1979,
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87 };
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88
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89 const unsigned int GUIADAPTER_DELTA_PIXEL = 2973;
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90 const unsigned int GUIADAPTER_DELTA_LINE = 2974;
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91 const unsigned int GUIADAPTER_DELTA_PAGE = 2975;
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92
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93 struct GuiAdapterUiEvent;
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94 struct GuiAdapterMouseEvent;
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95 struct GuiAdapterWheelEvent;
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96 struct GuiAdapterKeyboardEvent;
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97
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98 #if 1
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99 typedef bool (*OnMouseEventFunc)(std::string canvasId, const GuiAdapterMouseEvent* mouseEvent, void* userData);
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100 typedef bool (*OnMouseWheelFunc)(std::string canvasId, const GuiAdapterWheelEvent* wheelEvent, void* userData);
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101 typedef bool (*OnKeyDownFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData);
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102 typedef bool (*OnKeyUpFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData);
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103
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104 typedef bool (*OnAnimationFrameFunc)(double time, void* userData);
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105 typedef bool (*OnWindowResizeFunc)(std::string canvasId, const GuiAdapterUiEvent* uiEvent, void* userData);
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106
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107 #else
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108
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109 #if ORTHANC_ENABLE_WASM == 1
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110 typedef EM_BOOL (*OnMouseEventFunc)(int eventType, const EmscriptenMouseEvent* mouseEvent, void* userData);
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111 typedef EM_BOOL (*OnMouseWheelFunc)(int eventType, const EmscriptenWheelEvent* wheelEvent, void* userData);
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112 typedef EM_BOOL (*OnKeyDownFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData);
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113 typedef EM_BOOL (*OnKeyUpFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData);
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114
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115 typedef EM_BOOL (*OnAnimationFrameFunc)(double time, void* userData);
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116 typedef EM_BOOL (*OnWindowResizeFunc)(int eventType, const EmscriptenUiEvent* uiEvent, void* userData);
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117 #else
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118 typedef bool (*OnMouseEventFunc)(int eventType, const SDL_Event* mouseEvent, void* userData);
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119 typedef bool (*OnMouseWheelFunc)(int eventType, const SDL_Event* wheelEvent, void* userData);
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120 typedef bool (*OnKeyDownFunc) (int eventType, const SDL_Event* keyEvent, void* userData);
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121 typedef bool (*OnKeyUpFunc) (int eventType, const SDL_Event* keyEvent, void* userData);
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122
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123 typedef bool (*OnAnimationFrameFunc)(double time, void* userData);
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124 typedef bool (*OnWindowResizeFunc)(int eventType, const GuiAdapterUiEvent* uiEvent, void* userData);
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125 #endif
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126
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127 #endif
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128 struct GuiAdapterMouseEvent
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129 {
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130 GuiAdapterHidEventType type;
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131 //double timestamp;
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132 //long screenX;
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133 //long screenY;
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134 //long clientX;
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135 //long clientY;
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136 bool ctrlKey;
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137 bool shiftKey;
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138 bool altKey;
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139 //bool metaKey;
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140 unsigned short button;
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141 //unsigned short buttons;
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142 //long movementX;
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143 //long movementY;
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144 long targetX;
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145 long targetY;
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146 // 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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147 //long canvasX;
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148 //long canvasY;
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149 //long padding;
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150
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151 public:
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152 GuiAdapterMouseEvent()
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153 : ctrlKey(false),
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154 shiftKey(false),
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155 altKey(false)
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156 {
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157 }
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158 };
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159
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160 struct GuiAdapterWheelEvent {
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161 GuiAdapterMouseEvent mouse;
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162 double deltaX;
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163 double deltaY;
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164 unsigned long deltaMode;
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165 };
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166
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167 // we don't use any data now
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168 struct GuiAdapterUiEvent {};
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169
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170 // EmscriptenKeyboardEvent
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171 struct GuiAdapterKeyboardEvent
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172 {
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173 GuiAdapterHidEventType type;
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174 char sym[32];
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175 bool ctrlKey;
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176 bool shiftKey;
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177 bool altKey;
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178 };
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179
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180 std::ostream& operator<<(std::ostream& os, const GuiAdapterKeyboardEvent& event);
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181
843
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182 /*
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183 Mousedown event trigger when either the left or right (or middle) mouse is pressed
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184 on the object;
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185
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186 Mouseup event trigger when either the left or right (or middle) mouse is released
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187 above the object after triggered mousedown event and held.
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188
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189 Click event trigger when the only left mouse button is pressed and released on the
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190 same object, requires the Mousedown and Mouseup event happened before Click event.
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191
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192 The normal expect trigger order: onMousedown >> onMouseup >> onClick
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193
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194 Testing in Chrome v58, the time between onMouseup and onClick events are around
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195 7ms to 15ms
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196
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197 FROM: https://codingrepo.com/javascript/2017/05/19/javascript-difference-mousedown-mouseup-click-events/
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198 */
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199 #if ORTHANC_ENABLE_WASM == 1
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200 void ConvertFromPlatform(GuiAdapterUiEvent& dest, int eventType, const EmscriptenUiEvent& src);
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201
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202 void ConvertFromPlatform(GuiAdapterMouseEvent& dest, int eventType, const EmscriptenMouseEvent& src);
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203
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204 void ConvertFromPlatform(GuiAdapterWheelEvent& dest, int eventType, const EmscriptenWheelEvent& src);
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205
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206 void ConvertFromPlatform(GuiAdapterKeyboardEvent& dest, const EmscriptenKeyboardEvent& src);
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207 #else
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208
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209 # if ORTHANC_ENABLE_SDL == 1
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210 void ConvertFromPlatform(GuiAdapterMouseEvent& dest, bool ctrlPressed, bool shiftPressed, bool altPressed, const SDL_Event& source);
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211
861
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212 void ConvertFromPlatform(GuiAdapterWheelEvent& dest, bool ctrlPressed, bool shiftPressed, bool altPressed, const SDL_Event& source);
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213
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214 void ConvertFromPlatform(GuiAdapterKeyboardEvent& dest, const SDL_Event& source);
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215
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216 # endif
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217
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218 #endif
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219
937
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220 typedef void (*GuiAdapterRunFunc)(void*);
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221
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222 class GuiAdapter
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223 {
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224 public:
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225 #if ORTHANC_ENABLE_THREADS == 1
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226 GuiAdapter(Deprecated::LockingEmitter& lockingEmitter) : lockingEmitter_(lockingEmitter)
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227 #else
850
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228 GuiAdapter()
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229 #endif
850
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230 {
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231 static int instanceCount = 0;
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232 ORTHANC_ASSERT(instanceCount == 0);
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233 instanceCount = 1;
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234 }
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235
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236 void RegisterWidget(boost::shared_ptr<IGuiAdapterWidget> widget);
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237
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238 /**
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239 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize);
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240
858
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241 emscripten_set_wheel_callback("mycanvas1", widget1_.get(), false, OnXXXMouseWheel);
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242 emscripten_set_wheel_callback("mycanvas2", widget2_.get(), false, OnXXXMouseWheel);
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243 emscripten_set_wheel_callback("mycanvas3", widget3_.get(), false, OnXXXMouseWheel);
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244
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245 emscripten_set_keydown_callback("#window", NULL, false, OnKeyDown);
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246 emscripten_set_keyup_callback("#window", NULL, false, OnKeyUp);
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247
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248 emscripten_request_animation_frame_loop(OnAnimationFrame, NULL);
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249
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250 SDL:
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251 see https://wiki.libsdl.org/SDL_CaptureMouse
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252
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253 */
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254
1020
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255 void SetMouseDownCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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256 void SetMouseDblClickCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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257 void SetMouseMoveCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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258 void SetMouseUpCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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259 void SetWheelCallback (std::string canvasId, void* userData, bool capture, OnMouseWheelFunc func);
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260 void SetKeyDownCallback (std::string canvasId, void* userData, bool capture, OnKeyDownFunc func);
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261 void SetKeyUpCallback (std::string canvasId, void* userData, bool capture, OnKeyUpFunc func);
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262
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263 // if you pass "#window", under SDL, then any Window resize will trigger the callback
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264 void SetResizeCallback (std::string canvasId, void* userData, bool capture, OnWindowResizeFunc func);
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265
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266 void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData);
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267
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268 // TODO: implement and call to remove canvases [in SDL, although code should be generic]
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269 void SetOnExitCallback();
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270
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271 // void
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272 // OnWindowResize
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273 // oracle
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274 // broker
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275
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276 /**
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277 Under SDL, this function does NOT return until all windows have been closed.
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278 Under wasm, it returns without doing anything, since the event loop is managed
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279 by the browser.
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280 */
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86ac61a040c9 Added getters and notifications to allow clients of the loaders (DicomStructureSetLoader, OrthancSeriesVolumeProgressiveLoader and OrthancMultiframeVolumeLoader) to know when the loading is finished + added ability for SDL event loop to execute a callback repeatedly (used to check the view loading state)
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281 void Run(GuiAdapterRunFunc func = NULL, void* cookie = NULL);
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282
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283 #if ORTHANC_ENABLE_WASM != 1
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284 /**
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285 This method must be called in order for callback handler to be allowed to
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286 be registered.
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287
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288 We'll retrieve its name and use it as the canvas name in all subsequent
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289 calls
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290 */
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291 //void RegisterSdlWindow(SDL_Window* window);
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292 //void UnregisterSdlWindow(SDL_Window* window);
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293 #endif
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294
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295 private:
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296
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297 #if ORTHANC_ENABLE_THREADS == 1
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298 /**
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299 This object is used by the multithreaded Oracle to serialize access to
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300 shared data. We need to use it as soon as we access the state.
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301 */
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302 Deprecated::LockingEmitter& lockingEmitter_;
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303 #endif
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304
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305 /**
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306 In SDL, this executes all the registered headers
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307 */
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308 void OnAnimationFrame();
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309
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310 //void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData);
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311 std::vector<std::pair<OnAnimationFrameFunc, void*> >
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312 animationFrameHandlers_;
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313
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314 void OnResize();
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315
858
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316 #if ORTHANC_ENABLE_SDL == 1
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317 template<typename Func>
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318 struct EventHandlerData
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319 {
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320 EventHandlerData(std::string canvasName, Func func, void* userData)
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321 : canvasName(canvasName)
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322 , func(func)
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323 , userData(userData)
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324 {
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325 }
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326
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327 std::string canvasName;
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328 Func func;
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329 void* userData;
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330 };
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331 std::vector<EventHandlerData<OnWindowResizeFunc> > resizeHandlers_;
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332 std::vector<EventHandlerData<OnMouseEventFunc > > mouseDownHandlers_;
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333 std::vector<EventHandlerData<OnMouseEventFunc > > mouseDblCickHandlers_;
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334 std::vector<EventHandlerData<OnMouseEventFunc > > mouseMoveHandlers_;
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335 std::vector<EventHandlerData<OnMouseEventFunc > > mouseUpHandlers_;
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336 std::vector<EventHandlerData<OnMouseWheelFunc > > mouseWheelHandlers_;
861
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337 std::vector<EventHandlerData<OnKeyDownFunc > > keyDownHandlers_;
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338 std::vector<EventHandlerData<OnKeyUpFunc > > keyUpHandlers_;
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339
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340 /**
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341 This executes all the registered headers if needed (in wasm, the browser
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342 deals with this)
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343 */
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344 void OnMouseEvent(uint32_t windowID, const GuiAdapterMouseEvent& event);
861
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345
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346 void OnKeyboardEvent(uint32_t windowID, const GuiAdapterKeyboardEvent& event);
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347
858
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348 /**
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349 Same remark as OnMouseEvent
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350 */
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351 void OnMouseWheelEvent(uint32_t windowID, const GuiAdapterWheelEvent& event);
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352
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353 boost::shared_ptr<IGuiAdapterWidget> GetWidgetFromWindowId();
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354
843
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355 #endif
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356
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357 /**
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358 This executes all the registered headers if needed (in wasm, the browser
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359 deals with this)
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360 */
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361 void ViewportsUpdateSize();
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362
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363 std::vector<boost::weak_ptr<IGuiAdapterWidget> > widgets_;
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364
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365 template<typename F> void VisitWidgets(F func)
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366 {
845
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367 for (size_t i = 0; i < widgets_.size(); i++)
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368 {
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369 boost::shared_ptr<IGuiAdapterWidget> widget = widgets_[i].lock();
935
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370
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371 // TODO: we need to clean widgets!
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372 if (widget.get() != NULL)
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373 {
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374 func(widget);
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375 }
843
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376 }
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377 }
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378 };
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379 }