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annotate DPF-Prymula-audioplugins/dpf/dgl/src/WindowPrivateData.hpp @ 6:542e305f23f4

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author prymula <prymula76@outlook.com>
date Wed, 31 Jan 2024 20:40:57 +0100
parents 84e66ea83026
children
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1 /*
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2 * DISTRHO Plugin Framework (DPF)
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3 * Copyright (C) 2012-2022 Filipe Coelho <falktx@falktx.com>
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4 *
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5 * Permission to use, copy, modify, and/or distribute this software for any purpose with
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6 * or without fee is hereby granted, provided that the above copyright notice and this
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7 * permission notice appear in all copies.
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8 *
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9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
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10 * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
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11 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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12 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
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13 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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15 */
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16
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17 #ifndef DGL_WINDOW_PRIVATE_DATA_HPP_INCLUDED
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18 #define DGL_WINDOW_PRIVATE_DATA_HPP_INCLUDED
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20 #include "../Window.hpp"
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21 #include "../Widget.hpp"
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22 #include "ApplicationPrivateData.hpp"
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23
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24 #include "pugl.hpp"
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25
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26 #include <list>
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27
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28 START_NAMESPACE_DGL
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29
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30 class TopLevelWidget;
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31
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32 // -----------------------------------------------------------------------
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33
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34 struct Window::PrivateData : IdleCallback {
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35 /** Reference to the DGL Application class this (private data) window associates with. */
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36 Application& app;
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37
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38 /** Direct access to the DGL Application private data where we registers ourselves in. */
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39 Application::PrivateData* const appData;
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40
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41 /** Pointer to the the DGL Window class that this private data belongs to. */
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42 Window* const self;
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43
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44 /** Pugl view instance. */
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45 PuglView* view;
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46
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47 /** Reserved space for graphics context. */
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48 mutable uint8_t graphicsContext[sizeof(void*)];
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49
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50 /** The top-level widgets associated with this Window. */
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51 std::list<TopLevelWidget*> topLevelWidgets;
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52
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53 /** Whether this Window is closed (not visible or counted in the Application it is tied to).
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54 Defaults to true unless embed (embed windows are never closed). */
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55 bool isClosed;
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56
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57 /** Whether this Window is currently visible/mapped. Defaults to false. */
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58 bool isVisible;
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59
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60 /** Whether this Window is embed into another (usually not DGL-controlled) Window. */
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61 const bool isEmbed;
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62
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63 /** Whether to ignore resize requests and feed them into the host instead. used for VST3 */
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64 const bool usesSizeRequest;
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65
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66 /** Scale factor to report to widgets on request, purely informational. */
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67 double scaleFactor;
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68
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69 /** Automatic scaling to apply on widgets, implemented internally. */
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70 bool autoScaling;
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71 double autoScaleFactor;
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72
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73 /** Pugl geometry constraints access. */
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74 uint minWidth, minHeight;
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75 bool keepAspectRatio;
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76
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77 /** Whether to ignore idle callback requests, useful for temporary windows. */
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78 bool ignoreIdleCallbacks;
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79
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80 /** Whether we are waiting to receive clipboard data, ignoring some events in the process. */
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81 bool waitingForClipboardData;
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82 bool waitingForClipboardEvents;
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83
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84 /** The type id returned by the last onClipboardDataOffer call. */
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85 uint32_t clipboardTypeId;
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86
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87 /** Render to a picture file when non-null, automatically free+unset after saving. */
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88 char* filenameToRenderInto;
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89
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90 #ifndef DGL_FILE_BROWSER_DISABLED
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91 /** Handle for file browser dialog operations. */
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92 DGL_NAMESPACE::FileBrowserHandle fileBrowserHandle;
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93 #endif
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94
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95 /** Modal window setup. */
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96 struct Modal {
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97 PrivateData* parent; // parent of this window (so we can become modal)
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98 PrivateData* child; // child window to give focus to when modal mode is enabled
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99 bool enabled; // wherever modal mode is enabled (only possible if parent != null)
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100
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101 /** Constructor for a non-modal window. */
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102 Modal() noexcept
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103 : parent(nullptr),
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104 child(nullptr),
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105 enabled(false) {}
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106
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107 /** Constructor for a modal window (with a parent). */
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108 Modal(PrivateData* const p) noexcept
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109 : parent(p),
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110 child(nullptr),
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111 enabled(false) {}
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112
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113 /** Destructor. */
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114 ~Modal() noexcept
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115 {
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116 DISTRHO_SAFE_ASSERT(! enabled);
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117 }
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118
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119 DISTRHO_DECLARE_NON_COPYABLE(Modal)
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120 DISTRHO_PREVENT_HEAP_ALLOCATION
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121 } modal;
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122
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123 /** Constructor for a regular, standalone window. */
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124 explicit PrivateData(Application& app, Window* self);
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125
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126 /** Constructor for a modal window. */
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127 explicit PrivateData(Application& app, Window* self, PrivateData* ppData);
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128
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129 /** Constructor for an embed Window, with a few extra hints from the host side. */
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130 explicit PrivateData(Application& app, Window* self, uintptr_t parentWindowHandle, double scaling, bool resizable);
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131
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132 /** Constructor for an embed Window, with a few extra hints from the host side. */
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133 explicit PrivateData(Application& app, Window* self, uintptr_t parentWindowHandle,
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134 uint width, uint height, double scaling, bool resizable, bool isVST3);
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135
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136 /** Destructor. */
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137 ~PrivateData() override;
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138
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139 /** Helper initialization function called at the end of all this class constructors. */
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140 void initPre(uint width, uint height, bool resizable);
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141 /** Helper initialization function called on the Window constructor after we are done. */
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142 bool initPost();
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143
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144 /** Hide window and notify application of a window close event.
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145 * Does nothing if window is embed (that is, not standalone).
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146 * The application event-loop will stop when all windows have been closed.
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147 *
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148 * @note It is possible to hide the window while not stopping the event-loop.
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149 * A closed window is always hidden, but the reverse is not always true.
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150 */
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151 void close();
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152
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153 void show();
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154 void hide();
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155
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156 void focus();
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157
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158 void setResizable(bool resizable);
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159
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160 const GraphicsContext& getGraphicsContext() const noexcept;
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161
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162 // idle callback stuff
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163 void idleCallback() override;
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164 bool addIdleCallback(IdleCallback* callback, uint timerFrequencyInMs);
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165 bool removeIdleCallback(IdleCallback* callback);
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166
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167 #ifndef DGL_FILE_BROWSER_DISABLED
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168 // file handling
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169 bool openFileBrowser(const DGL_NAMESPACE::FileBrowserOptions& options);
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170 #endif
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171
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172 static void renderToPicture(const char* filename, const GraphicsContext& context, uint width, uint height);
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173
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174 // modal handling
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175 void startModal();
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176 void stopModal();
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177 void runAsModal(bool blockWait);
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178
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179 // pugl events
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180 void onPuglConfigure(double width, double height);
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181 void onPuglExpose();
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182 void onPuglClose();
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183 void onPuglFocus(bool focus, CrossingMode mode);
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184 void onPuglKey(const Widget::KeyboardEvent& ev);
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185 void onPuglText(const Widget::CharacterInputEvent& ev);
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186 void onPuglMouse(const Widget::MouseEvent& ev);
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187 void onPuglMotion(const Widget::MotionEvent& ev);
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188 void onPuglScroll(const Widget::ScrollEvent& ev);
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189
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190 // clipboard related handling
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191 const void* getClipboard(size_t& dataSize);
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192 uint32_t onClipboardDataOffer();
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193 void onClipboardData(uint32_t typeId);
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194
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195 // Pugl event handling entry point
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196 static PuglStatus puglEventCallback(PuglView* view, const PuglEvent* event);
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197
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198 DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(PrivateData)
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199 };
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200
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201 // -----------------------------------------------------------------------
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202
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203 END_NAMESPACE_DGL
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204
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205 #endif // DGL_WINDOW_PRIVATE_DATA_HPP_INCLUDED