296 lines
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296 lines
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<meta name="description" content="API documentation for the Rust `pnmixerlib` crate.">
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<meta name="keywords" content="rust, rustlang, rust-lang, pnmixerlib">
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<title>pnmixerlib - Rust</title>
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This old browser is unsupported and will most likely display funky
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<![endif]-->
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<nav class="sidebar">
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<p class='location'>Crate pnmixerlib</p><div class="block items"><ul><li><a href="#reexports">Reexports</a></li><li><a href="#modules">Modules</a></li><li><a href="#macros">Macros</a></li></ul></div><p class='location'></p><script>window.sidebarCurrent = {name: 'pnmixerlib', ty: 'mod', relpath: '../'};</script>
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placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Crate <a class="mod" href=''>pnmixerlib</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../src/pnmixerlib/lib.rs.html#1-90' title='goto source code'>[src]</a></span></h1>
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<div class='docblock'><p>PNMixer-rs is a mixer for the system tray.</p>
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<h1 id='design-overview' class='section-header'><a href='#design-overview'>Design Overview</a></h1>
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<p>The lowest level part of the code is the sound backend. Only Alsa is supported
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at the moment, but more backends may be added in the future.</p>
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<p>The backend is hidden behind a frontend, defined in <code>audio.rs</code>. Only <code>audio.rs</code>
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deals with audio backends. This means that the whole of the code is blissfully
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ignorant of the audio backend in use.</p>
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<p><code>audio.rs</code> is also in charge of emitting signals whenever a change happens.
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This means that PNMixer-rs design is quite signal-oriented, so to say.</p>
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<p>The ui code is nothing fancy. Each ui element...</p>
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<ul>
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<li>is defined in a single file</li>
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<li>strives to be standalone</li>
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<li>accesses the sound system with function calls</li>
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<li>listens to signals from the audio subsystem to update its appearance</li>
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</ul>
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<p>There's something you should keep in mind. Audio on a computer is a shared
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resource. PNMixer-rs isn't the only one that can change it. At any moment the
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audio volume may be modified by someone else, and we must update the ui
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accordingly. So listening to changes from the audio subsystem (and therefore
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having a signal-oriented design) is the most obvious solution to solve that
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problem.</p>
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</div><h2 id='reexports' class='section-header'><a href="#reexports">Reexports</a></h2>
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<table><tr><td><code>pub extern crate <a class="mod" href="../flexi_logger/index.html" title="mod flexi_logger">flexi_logger</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../log/index.html" title="mod log">log</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../error_chain/index.html" title="mod error_chain">error_chain</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../serde_derive/index.html" title="mod serde_derive">serde_derive</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../toml/index.html" title="mod toml">toml</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../serde/index.html" title="mod serde">serde</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../alsa/index.html" title="mod alsa">alsa</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../alsa_sys/index.html" title="mod alsa_sys">alsa_sys</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../ffi/index.html" title="mod ffi">ffi</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../gdk/index.html" title="mod gdk">gdk</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../gdk_pixbuf/index.html" title="mod gdk_pixbuf">gdk_pixbuf</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../gdk_pixbuf_sys/index.html" title="mod gdk_pixbuf_sys">gdk_pixbuf_sys</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../gdk_sys/index.html" title="mod gdk_sys">gdk_sys</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../gio/index.html" title="mod gio">gio</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../glib/index.html" title="mod glib">glib</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../glib_sys/index.html" title="mod glib_sys">glib_sys</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../gobject_sys/index.html" title="mod gobject_sys">gobject_sys</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../gtk/index.html" title="mod gtk">gtk</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../gtk_sys/index.html" title="mod gtk_sys">gtk_sys</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../libc/index.html" title="mod libc">libc</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../png/index.html" title="mod png">png</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../which/index.html" title="mod which">which</a>;</code></td></tr><tr><td><code>pub extern crate <a class="mod" href="../xdg/index.html" title="mod xdg">xdg</a>;</code></td></tr></table><h2 id='modules' class='section-header'><a href="#modules">Modules</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="mod" href="alsa_card/index.html"
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title='mod pnmixerlib::alsa_card'>alsa_card</a></td>
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<td class='docblock-short'>
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<p>Alsa audio subsystem.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="app_state/index.html"
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title='mod pnmixerlib::app_state'>app_state</a></td>
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<td class='docblock-short'>
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<p>Global application state.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="audio/index.html"
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title='mod pnmixerlib::audio'>audio</a></td>
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<td class='docblock-short'>
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<p>High-level audio subsystem.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="errors/index.html"
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title='mod pnmixerlib::errors'>errors</a></td>
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<td class='docblock-short'>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="glade_helpers/index.html"
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title='mod pnmixerlib::glade_helpers'>glade_helpers</a></td>
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<td class='docblock-short'>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="prefs/index.html"
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title='mod pnmixerlib::prefs'>prefs</a></td>
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<td class='docblock-short'>
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<p>The preferences subsystem.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="support_alsa/index.html"
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title='mod pnmixerlib::support_alsa'>support_alsa</a></td>
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<td class='docblock-short'>
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<p>Alsa audio helper functions.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="support_audio/index.html"
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title='mod pnmixerlib::support_audio'>support_audio</a></td>
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<td class='docblock-short'>
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<p>Helper functions of the audio subsystem.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="support_cmd/index.html"
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title='mod pnmixerlib::support_cmd'>support_cmd</a></td>
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<td class='docblock-short'>
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<p>Helper functions for invoking system commands.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="support_ui/index.html"
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title='mod pnmixerlib::support_ui'>support_ui</a></td>
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<td class='docblock-short'>
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<p>Helper functions for the UI, mostly pixbuf functions.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="ui_entry/index.html"
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title='mod pnmixerlib::ui_entry'>ui_entry</a></td>
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<td class='docblock-short'>
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<p>Global GUI state.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="ui_popup_menu/index.html"
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title='mod pnmixerlib::ui_popup_menu'>ui_popup_menu</a></td>
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<td class='docblock-short'>
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<p>The popup menu subsystem when the user right-clicks on the tray icon.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="ui_popup_window/index.html"
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title='mod pnmixerlib::ui_popup_window'>ui_popup_window</a></td>
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<td class='docblock-short'>
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<p>The popup window subsystem when the user left-clicks on the tray icon.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="ui_prefs_dialog/index.html"
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title='mod pnmixerlib::ui_prefs_dialog'>ui_prefs_dialog</a></td>
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<td class='docblock-short'>
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<p>The preferences window subsystem, when the user clicks the "Preferences"
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menu item on the popup menu.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="mod" href="ui_tray_icon/index.html"
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title='mod pnmixerlib::ui_tray_icon'>ui_tray_icon</a></td>
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<td class='docblock-short'>
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<p>The tray icon subsystem.</p>
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</td>
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</tr></table><h2 id='macros' class='section-header'><a href="#macros">Macros</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="macro" href="macro.create_builder_item.html"
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title='macro pnmixerlib::create_builder_item'>create_builder_item</a></td>
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<td class='docblock-short'>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="macro" href="macro.pixbuf_new_from_png.html"
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title='macro pnmixerlib::pixbuf_new_from_png'>pixbuf_new_from_png</a></td>
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<td class='docblock-short'>
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<p>Create a pixbuf from the given PNG file. Includes the file as bytes
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in the binary and decodes it.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="macro" href="macro.try_e.html"
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title='macro pnmixerlib::try_e'>try_e</a></td>
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<td class='docblock-short'>
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<p>Try to unwrap a <code>Result<T, E></code>. If there is a value <code>T</code>, yield it,
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otherwise print an error and exit the program.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="macro" href="macro.try_r.html"
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title='macro pnmixerlib::try_r'>try_r</a></td>
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<td class='docblock-short'>
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<p>Try to unwrap a <code>Result<T, E></code>. If there is a value <code>T</code>, yield it,
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otherwise return from the function with the given value.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="macro" href="macro.try_w.html"
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title='macro pnmixerlib::try_w'>try_w</a></td>
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<td class='docblock-short'>
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<p>Try to unwrap a <code>Result<T, E></code>. If there is a value <code>T</code>, yield it,
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otherwise print a warning and <code>return ()</code> from the function.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="macro" href="macro.try_wr.html"
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title='macro pnmixerlib::try_wr'>try_wr</a></td>
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<td class='docblock-short'>
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<p>Try to unwrap a <code>Result<T, E></code>. If there is a value <code>T</code>, yield it,
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otherwise print a warning and return from the function with the given value.</p>
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</td>
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</tr></table></section>
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<section class="footer"></section>
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<h1 class="hidden">Help</h1>
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<div class="shortcuts">
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<h2>Keyboard Shortcuts</h2>
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<dd>Show this help dialog</dd>
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Accepted types are: <code>fn</code>, <code>mod</code>,
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<code>trait</code>, <code>type</code>, <code>macro</code>,
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Search functions by type signature (e.g.
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