Mercurial > hg > orthanc-stone

annotate Applications/Generic/GuiAdapter.h @ 1313:f30905f5d246 broker

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Added support for OnGenericSdlEvent to GuiAdapter. This makes it possible to piggyback app-specific logic to special events (here, to support the Viewport refresh events)
author Benjamin Golinvaux <bgo@osimis.io>
date Mon, 16 Mar 2020 11:12:39 +0100
parents 4f8c9065ee52
children cbfdba08e039
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rev   line source
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 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 #if ORTHANC_ENABLE_WASM != 1
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57 class SdlViewport;
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58 #endif
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59
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60 #if 0
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61
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62 // events are now handled directly by the VolumeSlicerWidget... The
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63 // GuiAdapter doesn't know about widgets anymore
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64
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65 /**
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66 This interface is used to store the widgets that are controlled by the
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67 GuiAdapter and receive event callbacks.
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68 The callbacks may possibly be downcast (using dynamic_cast, for safety) \
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69 to the actual widget type
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70 */
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71 class IGuiAdapterWidget
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72 {
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73 public:
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74 virtual ~IGuiAdapterWidget() {}
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75
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76 #if ORTHANC_ENABLE_WASM != 1
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77 /**
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78 Returns the SdlViewport that this widget contains. If the underlying
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79 viewport type is *not* SDL, then an error is returned.
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80 */
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81 virtual SdlViewport& GetSdlViewport() = 0;
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82 #endif
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83 };
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84
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85 #endif
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86
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87 enum GuiAdapterMouseButtonType
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88 {
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89 GUIADAPTER_MOUSEBUTTON_LEFT = 0,
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90 GUIADAPTER_MOUSEBUTTON_MIDDLE = 1,
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91 GUIADAPTER_MOUSEBUTTON_RIGHT = 2
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92 };
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93
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94
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95 enum GuiAdapterHidEventType
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96 {
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97 GUIADAPTER_EVENT_MOUSEDOWN = 1973,
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98 GUIADAPTER_EVENT_MOUSEMOVE = 1974,
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99 GUIADAPTER_EVENT_MOUSEDBLCLICK = 1975,
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100 GUIADAPTER_EVENT_MOUSEUP = 1976,
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101 GUIADAPTER_EVENT_WHEEL = 1977,
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102 GUIADAPTER_EVENT_KEYDOWN = 1978,
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103 GUIADAPTER_EVENT_KEYUP = 1979,
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104 };
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105
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106 const unsigned int GUIADAPTER_DELTA_PIXEL = 2973;
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107 const unsigned int GUIADAPTER_DELTA_LINE = 2974;
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108 const unsigned int GUIADAPTER_DELTA_PAGE = 2975;
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109
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110 struct GuiAdapterUiEvent;
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111 struct GuiAdapterMouseEvent;
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112 struct GuiAdapterWheelEvent;
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113 struct GuiAdapterKeyboardEvent;
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114
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115 #if 1
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116 typedef bool (*OnMouseEventFunc) (std::string canvasId, const GuiAdapterMouseEvent* mouseEvent, void* userData);
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117 typedef bool (*OnMouseWheelFunc) (std::string canvasId, const GuiAdapterWheelEvent* wheelEvent, void* userData);
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118 typedef bool (*OnKeyDownFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData);
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119 typedef bool (*OnKeyUpFunc) (std::string canvasId, const GuiAdapterKeyboardEvent* keyEvent, void* userData);
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120 typedef bool (*OnAnimationFrameFunc)(double time, void* userData);
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121 typedef bool (*OnSdlEventCallback) (std::string canvasId, const SDL_Event& sdlEvent, void* userData);
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122
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123 #if ORTHANC_ENABLE_WASM != 1
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124 typedef bool (*OnSdlWindowResizeFunc)(std::string canvasId,
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125 const GuiAdapterUiEvent* uiEvent,
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126 unsigned int width,
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127 unsigned int height,
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128 void* userData);
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129
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130
1312
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131 #endif
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132
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133 #else
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134
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135 #if ORTHANC_ENABLE_WASM == 1
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136 typedef EM_BOOL (*OnMouseEventFunc)(int eventType, const EmscriptenMouseEvent* mouseEvent, void* userData);
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137 typedef EM_BOOL (*OnMouseWheelFunc)(int eventType, const EmscriptenWheelEvent* wheelEvent, void* userData);
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138 typedef EM_BOOL (*OnKeyDownFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData);
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139 typedef EM_BOOL (*OnKeyUpFunc) (int eventType, const EmscriptenKeyboardEvent* keyEvent, void* userData);
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140
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141 typedef EM_BOOL (*OnAnimationFrameFunc)(double time, void* userData);
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142 typedef EM_BOOL (*OnWindowResizeFunc)(int eventType, const EmscriptenUiEvent* uiEvent, void* userData);
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143 #else
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144 typedef bool (*OnMouseEventFunc)(int eventType, const SDL_Event* mouseEvent, void* userData);
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145 typedef bool (*OnMouseWheelFunc)(int eventType, const SDL_Event* wheelEvent, void* userData);
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146 typedef bool (*OnKeyDownFunc) (int eventType, const SDL_Event* keyEvent, void* userData);
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147 typedef bool (*OnKeyUpFunc) (int eventType, const SDL_Event* keyEvent, void* userData);
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148
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149 typedef bool (*OnAnimationFrameFunc)(double time, void* userData);
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150 typedef bool (*OnWindowResizeFunc)(int eventType, const GuiAdapterUiEvent* uiEvent, void* userData);
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151 #endif
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152
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153 #endif
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154 struct GuiAdapterMouseEvent
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155 {
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156 GuiAdapterHidEventType type;
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157 //double timestamp;
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158 //long screenX;
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159 //long screenY;
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160 //long clientX;
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161 //long clientY;
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162 bool ctrlKey;
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163 bool shiftKey;
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164 bool altKey;
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165 //bool metaKey;
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166 unsigned short button;
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167 //unsigned short buttons;
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168 //long movementX;
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169 //long movementY;
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170 long targetX;
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171 long targetY;
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172 // 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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173 //long canvasX;
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174 //long canvasY;
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175 //long padding;
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176
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177 public:
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178 GuiAdapterMouseEvent()
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179 : ctrlKey(false),
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180 shiftKey(false),
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181 altKey(false)
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182 {
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183 }
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184 };
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185
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186 struct GuiAdapterWheelEvent {
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187 GuiAdapterMouseEvent mouse;
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188 double deltaX;
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189 double deltaY;
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190 unsigned long deltaMode;
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191 };
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192
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193 // we don't use any data now
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194 struct GuiAdapterUiEvent {};
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195
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196 // EmscriptenKeyboardEvent
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197 struct GuiAdapterKeyboardEvent
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198 {
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199 GuiAdapterHidEventType type;
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200 char sym[32];
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201 bool ctrlKey;
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202 bool shiftKey;
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203 bool altKey;
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204 };
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205
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206 std::ostream& operator<<(std::ostream& os, const GuiAdapterKeyboardEvent& event);
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207
843
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208 /*
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209 Mousedown event trigger when either the left or right (or middle) mouse is pressed
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210 on the object;
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211
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212 Mouseup event trigger when either the left or right (or middle) mouse is released
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213 above the object after triggered mousedown event and held.
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214
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215 Click event trigger when the only left mouse button is pressed and released on the
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216 same object, requires the Mousedown and Mouseup event happened before Click event.
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217
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218 The normal expect trigger order: onMousedown >> onMouseup >> onClick
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219
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220 Testing in Chrome v58, the time between onMouseup and onClick events are around
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221 7ms to 15ms
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222
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223 FROM: https://codingrepo.com/javascript/2017/05/19/javascript-difference-mousedown-mouseup-click-events/
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224 */
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225 #if ORTHANC_ENABLE_WASM == 1
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226 void ConvertFromPlatform(GuiAdapterUiEvent& dest, int eventType, const EmscriptenUiEvent& src);
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227
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228 void ConvertFromPlatform(GuiAdapterMouseEvent& dest, int eventType, const EmscriptenMouseEvent& src);
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229
861
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230 void ConvertFromPlatform(GuiAdapterWheelEvent& dest, int eventType, const EmscriptenWheelEvent& src);
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231
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232 void ConvertFromPlatform(GuiAdapterKeyboardEvent& dest, const EmscriptenKeyboardEvent& src);
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233 #else
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234
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235 # if ORTHANC_ENABLE_SDL == 1
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236 void ConvertFromPlatform(GuiAdapterMouseEvent& dest, bool ctrlPressed, bool shiftPressed, bool altPressed, const SDL_Event& source);
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237
861
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238 void ConvertFromPlatform(GuiAdapterWheelEvent& dest, bool ctrlPressed, bool shiftPressed, bool altPressed, const SDL_Event& source);
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239
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240 void ConvertFromPlatform(GuiAdapterKeyboardEvent& dest, const SDL_Event& source);
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241
843
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242 # endif
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243
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244 #endif
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245
937
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246 typedef void (*GuiAdapterRunFunc)(void*);
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247
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248 class GuiAdapter
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249 {
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250 public:
850
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251 GuiAdapter()
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252 {
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253 static int instanceCount = 0;
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254 ORTHANC_ASSERT(instanceCount == 0);
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255 instanceCount = 1;
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256 }
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257
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258 /**
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259 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize);
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260
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261 emscripten_set_wheel_callback("mycanvas1", widget1_.get(), false, OnXXXMouseWheel);
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262 emscripten_set_wheel_callback("mycanvas2", widget2_.get(), false, OnXXXMouseWheel);
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263 emscripten_set_wheel_callback("mycanvas3", widget3_.get(), false, OnXXXMouseWheel);
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264
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265 emscripten_set_keydown_callback("#window", NULL, false, OnKeyDown);
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266 emscripten_set_keyup_callback("#window", NULL, false, OnKeyUp);
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267
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268 emscripten_request_animation_frame_loop(OnAnimationFrame, NULL);
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269
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270 SDL:
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271 see https://wiki.libsdl.org/SDL_CaptureMouse
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272
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273 */
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274
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275 void SetMouseDownCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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276 void SetMouseDblClickCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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277 void SetMouseMoveCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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278 void SetMouseUpCallback (std::string canvasId, void* userData, bool capture, OnMouseEventFunc func);
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279 void SetWheelCallback (std::string canvasId, void* userData, bool capture, OnMouseWheelFunc func);
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280 void SetKeyDownCallback (std::string canvasId, void* userData, bool capture, OnKeyDownFunc func);
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281 void SetKeyUpCallback (std::string canvasId, void* userData, bool capture, OnKeyUpFunc func);
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282 void SetGenericSdlEventCallback (std::string canvasId, void* userData, bool capture, OnSdlEventCallback func);
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283
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284 typedef bool (*OnSdlEventCallback) (std::string canvasId, const SDL_Event& sdlEvent, void* userData);
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285
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286
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287 #if ORTHANC_ENABLE_WASM != 1
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288 // if you pass "#window", then any Window resize will trigger the callback
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289 void SetSdlResizeCallback(std::string canvasId,
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290 void* userData,
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291 bool capture,
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292 OnSdlWindowResizeFunc func);
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293 #endif
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294
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295 void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData);
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296
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297 // TODO: implement and call to remove canvases [in SDL, although code should be generic]
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298 void SetOnExitCallback();
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299
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300 /**
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301 Under SDL, this function does NOT return until all windows have been closed.
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302 Under wasm, it returns without doing anything, since the event loop is managed
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303 by the browser.
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304 */
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305 void Run(GuiAdapterRunFunc func = NULL, void* cookie = NULL);
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306
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307 private:
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308
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309 #if ORTHANC_ENABLE_WASM != 1
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310 /**
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311 Gives observers a chance to react based on generic event handlers. This
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312 is used, for instance, when the viewport lock interface is invalidated.
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313 */
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314 void OnSdlGenericEvent(const SDL_Event& sdlEvent);
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315 #endif
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316
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317 /**
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318 In SDL, this executes all the registered headers
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319 */
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320 void OnAnimationFrame();
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321
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322 //void RequestAnimationFrame(OnAnimationFrameFunc func, void* userData);
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323 std::vector<std::pair<OnAnimationFrameFunc, void*> >
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324 animationFrameHandlers_;
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325
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326 void OnResize(unsigned int width, unsigned int height);
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327
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328 #if ORTHANC_ENABLE_SDL == 1
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329 template<typename Func>
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330 struct EventHandlerData
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331 {
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332 EventHandlerData(std::string canvasName, Func func, void* userData)
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333 : canvasName(canvasName)
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334 , func(func)
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335 , userData(userData)
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336 {
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337 }
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338
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339 std::string canvasName;
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340 Func func;
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341 void* userData;
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342 };
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343 std::vector<EventHandlerData<OnSdlWindowResizeFunc> > resizeHandlers_;
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344 std::vector<EventHandlerData<OnMouseEventFunc > > mouseDownHandlers_;
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345 std::vector<EventHandlerData<OnMouseEventFunc > > mouseDblCickHandlers_;
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346 std::vector<EventHandlerData<OnMouseEventFunc > > mouseMoveHandlers_;
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347 std::vector<EventHandlerData<OnMouseEventFunc > > mouseUpHandlers_;
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348 std::vector<EventHandlerData<OnMouseWheelFunc > > mouseWheelHandlers_;
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349 std::vector<EventHandlerData<OnKeyDownFunc > > keyDownHandlers_;
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350 std::vector<EventHandlerData<OnKeyUpFunc > > keyUpHandlers_;
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351 std::vector<EventHandlerData<OnSdlEventCallback > > sdlEventHandlers_;
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352
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353 /**
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354 This executes all the registered headers if needed (in wasm, the browser
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355 deals with this)
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356 */
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357 void OnMouseEvent(uint32_t windowID, const GuiAdapterMouseEvent& event);
861
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358
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359 void OnKeyboardEvent(uint32_t windowID, const GuiAdapterKeyboardEvent& event);
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360
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361 /**
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362 Same remark as OnMouseEvent
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363 */
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364 void OnMouseWheelEvent(uint32_t windowID, const GuiAdapterWheelEvent& event);
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365
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366 #endif
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367
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368 /**
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369 This executes all the registered headers if needed (in wasm, the browser
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370 deals with this)
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371 */
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372 void ViewportsUpdateSize();
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373 };
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374 }