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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="The theme logic of some `Application`."><title>ThemeFn in cosmic::iced::application - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../static.files/rustdoc-aa0817cf.css"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="cosmic" data-themes="" data-resource-suffix="" data-rustdoc-version="1.90.0-nightly (3048886e5 2025-07-30)" data-channel="nightly" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../../static.files/storage-68b7e25d.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../../static.files/main-eebb9057.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-044be391.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../cosmic/index.html">cosmic</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">ThemeFn</a></h2><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.theme" title="theme">theme</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><div id="rustdoc-modnav"><h2><a href="index.html">In cosmic::<wbr>iced::<wbr>application</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../index.html">cosmic</a>::<wbr><a href="../index.html">iced</a>::<wbr><a href="index.html">application</a></div><h1>Trait <span class="trait">ThemeFn</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"></span></div><pre class="rust item-decl"><code>pub trait ThemeFn<State, Theme> {
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// Required method
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fn <a href="#tymethod.theme" class="fn">theme</a>(&self, state: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&State</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><Theme>;
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>The theme logic of some <a href="../struct.Application.html" title="struct cosmic::iced::Application"><code>Application</code></a>.</p>
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<p>Any implementors of this trait can be provided as an argument to
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<a href="../struct.Application.html#method.theme" title="method cosmic::iced::Application::theme"><code>Application::theme</code></a>.</p>
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<p><code>iced</code> provides two implementors:</p>
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<ul>
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<li>the built-in <a href="../enum.Theme.html" title="enum cosmic::iced::Theme"><code>Theme</code></a> itself</li>
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<li>and any <code>Fn(&State) -> impl Into<Option<Theme>></code>.</li>
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</ul>
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</div></details><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.theme" class="method"><h4 class="code-header">fn <a href="#tymethod.theme" class="fn">theme</a>(&self, state: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&State</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><Theme></h4></section></summary><div class="docblock"><p>Returns the theme of the <a href="../struct.Application.html" title="struct cosmic::iced::Application"><code>Application</code></a> for the current state.</p>
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<p>If <code>None</code> is returned, <code>iced</code> will try to use a theme that
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matches the system color scheme.</p>
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</div></details></div><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><section id="impl-ThemeFn%3CState,+Theme%3E-for-F" class="impl"><a href="#impl-ThemeFn%3CState,+Theme%3E-for-F" class="anchor">§</a><h3 class="code-header">impl<F, T, State, Theme> <a class="trait" href="trait.ThemeFn.html" title="trait cosmic::iced::application::ThemeFn">ThemeFn</a><State, Theme> for F<div class="where">where
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F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&State</a>) -> T,
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T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><Theme>>,</div></h3></section><section id="impl-ThemeFn%3CState,+Theme%3E-for-Theme" class="impl"><a href="#impl-ThemeFn%3CState,+Theme%3E-for-Theme" class="anchor">§</a><h3 class="code-header">impl<State> <a class="trait" href="trait.ThemeFn.html" title="trait cosmic::iced::application::ThemeFn">ThemeFn</a><State, <a class="enum" href="../enum.Theme.html" title="enum cosmic::iced::Theme">Theme</a>> for <a class="enum" href="../enum.Theme.html" title="enum cosmic::iced::Theme">Theme</a></h3></section></div><script src="../../../trait.impl/iced/application/trait.ThemeFn.js" data-ignore-extern-crates="iced_core" async></script></section></div></main></body></html> |