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annotate DPF-Prymula-audioplugins/dpf/dgl/Application.hpp @ 3:84e66ea83026

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DPF-Prymula-audioplugins-0.231015-2
author prymula <prymula76@outlook.com>
date Mon, 16 Oct 2023 21:53:34 +0200
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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_APP_HPP_INCLUDED
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18 #define DGL_APP_HPP_INCLUDED
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19
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20 #include "Base.hpp"
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21
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22 #ifdef DISTRHO_NAMESPACE
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23 START_NAMESPACE_DISTRHO
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24 class PluginApplication;
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25 END_NAMESPACE_DISTRHO
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26 #endif
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27
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28 START_NAMESPACE_DGL
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29
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30 // --------------------------------------------------------------------------------------------------------------------
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31
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32 /**
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33 Base DGL Application class.
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34
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35 One application instance is required for creating a window.
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36 There's no single/global application instance in DGL, and multiple windows can share the same app instance.
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37
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38 In standalone mode an application will automatically quit its event-loop when all its windows are closed.
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39
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40 Unless stated otherwise, functions within this class are not thread-safe.
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41 */
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42 class DISTRHO_API Application
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43 {
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44 public:
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45 /**
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46 Constructor.
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47 */
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48 // NOTE: the default value is not yet passed, so we catch where we use this
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49 Application(bool isStandalone = true);
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50
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51 /**
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52 Destructor.
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53 */
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54 virtual ~Application();
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55
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56 /**
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57 Idle function.
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58 This runs the application event-loop once.
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59 */
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60 void idle();
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61
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62 /**
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63 Run the application event-loop until all Windows are closed.
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64 idle() is called at regular intervals.
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65 @note This function is meant for standalones only, *never* call this from plugins.
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66 */
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67 void exec(uint idleTimeInMs = 30);
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68
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69 /**
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70 Quit the application.
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71 This stops the event-loop and closes all Windows.
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72 This function is thread-safe.
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73 */
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74 void quit();
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75
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76 /**
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77 Check if the application is about to quit.
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78 Returning true means there's no event-loop running at the moment (or it's just about to stop).
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79 This function is thread-safe.
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80 */
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81 bool isQuitting() const noexcept;
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82
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83 /**
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84 Check if the application is standalone, otherwise running as a module or plugin.
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85 This function is thread-safe.
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86 */
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87 bool isStandalone() const noexcept;
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88
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89 /**
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90 Return the time in seconds.
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91
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92 This is a monotonically increasing clock with high resolution.@n
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93 The returned time is only useful to compare against other times returned by this function,
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94 its absolute value has no meaning.
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95 */
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96 double getTime() const;
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97
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98 /**
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99 Add a callback function to be triggered on every idle cycle.
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100 You can add more than one, and remove them at anytime with removeIdleCallback().
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101 Idle callbacks trigger right after OS event handling and Window idle events (within the same cycle).
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102 There are no guarantees in terms of timing, use Window::addIdleCallback for time-relative callbacks.
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103 */
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104 void addIdleCallback(IdleCallback* callback);
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105
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106 /**
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107 Remove an idle callback previously added via addIdleCallback().
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108 */
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109 void removeIdleCallback(IdleCallback* callback);
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110
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111 /**
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112 Get the class name of the application.
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113
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114 This is a stable identifier for the application, used as the window class/instance name on X11 and Windows.
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115 It is not displayed to the user, but can be used in scripts and by window managers,
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116 so it should be the same for every instance of the application, but different from other applications.
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117
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118 Plugins created with DPF have their class name automatically set based on DGL_NAMESPACE and plugin name.
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119 */
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120 const char* getClassName() const noexcept;
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121
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122 /**
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123 Set the class name of the application.
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124 @see getClassName
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125 */
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126 void setClassName(const char* name);
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127
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128 private:
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129 struct PrivateData;
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130 PrivateData* const pData;
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131 friend class Window;
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132 #ifdef DISTRHO_NAMESPACE
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133 friend class DISTRHO_NAMESPACE::PluginApplication;
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134 #endif
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135
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136 DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(Application)
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137 };
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138
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139 // --------------------------------------------------------------------------------------------------------------------
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140
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141 END_NAMESPACE_DGL
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142
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143 #endif // DGL_APP_HPP_INCLUDED