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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="Trait for casting a collection of colors from a collection of color components without copying."><title>FromComponents in cosmic::cosmic_theme::palette::cast - 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="#">From<wbr>Components</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#panics" title="Panics">Panics</a></li><li><a href="#examples" title="Examples">Examples</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.from_components" title="from_components">from_components</a></li></ul><h3><a href="#dyn-compatibility">Dyn Compatibility</a></h3><h3><a href="#implementors">Implementors</a></h3></section><div id="rustdoc-modnav"><h2><a href="index.html">In cosmic::<wbr>cosmic_<wbr>theme::<wbr>palette::<wbr>cast</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">cosmic_theme</a>::<wbr><a href="../index.html">palette</a>::<wbr><a href="index.html">cast</a></div><h1>Trait <span class="trait">FromComponents</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="https://docs.rs/palette/0.7.6/src/palette/cast/from_into_components_traits.rs.html#247">Source</a> </span></div><pre class="rust item-decl"><code>pub trait FromComponents<C> {
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// Required method
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fn <a href="#tymethod.from_components" class="fn">from_components</a>(components: C) -> Self;
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Trait for casting a collection of colors from a collection of color
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components without copying.</p>
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<p>This trait is meant as a more convenient alternative to the free functions
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in <a href="index.html" title="mod cosmic::cosmic_theme::palette::cast"><code>cast</code></a>, to allow method chaining among other things.</p>
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<h3 id="panics"><a class="doc-anchor" href="#panics">§</a>Panics</h3>
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<p>The cast will panic if the cast fails, such as when the length of the input
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is not a multiple of the color’s array length.</p>
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<h3 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h3>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>palette::{cast::FromComponents, Srgb};
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<span class="kw">let </span>array: [<span class="kw">_</span>; <span class="number">6</span>] = [<span class="number">64</span>, <span class="number">139</span>, <span class="number">10</span>, <span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>];
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<span class="kw">let </span>slice: <span class="kw-2">&</span>[<span class="kw">_</span>] = <span class="kw-2">&</span>[<span class="number">64</span>, <span class="number">139</span>, <span class="number">10</span>, <span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>];
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<span class="kw">let </span>slice_mut: <span class="kw-2">&mut </span>[<span class="kw">_</span>] = <span class="kw-2">&mut </span>[<span class="number">64</span>, <span class="number">139</span>, <span class="number">10</span>, <span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>];
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<span class="kw">let </span>vec: Vec<<span class="kw">_</span>> = <span class="macro">vec!</span>[<span class="number">64</span>, <span class="number">139</span>, <span class="number">10</span>, <span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>];
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<span class="macro">assert_eq!</span>(
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<[Srgb<u8>; <span class="number">2</span>]>::from_components(array),
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[Srgb::new(<span class="number">64u8</span>, <span class="number">139</span>, <span class="number">10</span>), Srgb::new(<span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>)]
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);
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<span class="macro">assert_eq!</span>(
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<<span class="kw-2">&</span>[Srgb<u8>]>::from_components(slice),
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[Srgb::new(<span class="number">64u8</span>, <span class="number">139</span>, <span class="number">10</span>), Srgb::new(<span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>)]
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);
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<span class="macro">assert_eq!</span>(
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<<span class="kw-2">&mut </span>[Srgb<u8>]>::from_components(slice_mut),
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[Srgb::new(<span class="number">64u8</span>, <span class="number">139</span>, <span class="number">10</span>), Srgb::new(<span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>)]
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);
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<span class="macro">assert_eq!</span>(
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Vec::<Srgb<u8>>::from_components(vec),
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<span class="macro">vec!</span>[Srgb::new(<span class="number">64u8</span>, <span class="number">139</span>, <span class="number">10</span>), Srgb::new(<span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>)]
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);</code></pre></div>
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<p>Owning types can be cast as slices, too:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>palette::{cast::FromComponents, Srgb};
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<span class="kw">let </span>array: [<span class="kw">_</span>; <span class="number">6</span>] = [<span class="number">64</span>, <span class="number">139</span>, <span class="number">10</span>, <span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>];
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<span class="kw">let </span><span class="kw-2">mut </span>vec: Vec<<span class="kw">_</span>> = <span class="macro">vec!</span>[<span class="number">64</span>, <span class="number">139</span>, <span class="number">10</span>, <span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>];
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<span class="macro">assert_eq!</span>(
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<<span class="kw-2">&</span>[Srgb<u8>]>::from_components(<span class="kw-2">&</span>array),
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[Srgb::new(<span class="number">64u8</span>, <span class="number">139</span>, <span class="number">10</span>), Srgb::new(<span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>)]
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);
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<span class="macro">assert_eq!</span>(
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<<span class="kw-2">&mut </span>[Srgb<u8>]>::from_components(<span class="kw-2">&mut </span>vec),
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[Srgb::new(<span class="number">64u8</span>, <span class="number">139</span>, <span class="number">10</span>), Srgb::new(<span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>)]
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);</code></pre></div>
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<p>This panics:</p>
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<div class="example-wrap should_panic"><a href="#" class="tooltip" title="This example panics">ⓘ</a><pre class="rust rust-example-rendered"><code><span class="kw">use </span>palette::{cast::FromComponents, Srgb};
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<span class="kw">let </span>components = <span class="kw-2">&</span>[<span class="number">64</span>, <span class="number">139</span>, <span class="number">10</span>, <span class="number">93</span>, <span class="number">18</span>, <span class="number">214</span>, <span class="number">0</span>, <span class="number">123</span>]; <span class="comment">// Not a multiple of 3
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</span><<span class="kw-2">&</span>[Srgb<u8>]>::from_components(components);</code></pre></div>
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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.from_components" class="method"><a class="src rightside" href="https://docs.rs/palette/0.7.6/src/palette/cast/from_into_components_traits.rs.html#254">Source</a><h4 class="code-header">fn <a href="#tymethod.from_components" class="fn">from_components</a>(components: C) -> Self</h4></section></summary><div class="docblock"><p>Cast a collection of color components into an collection of colors.</p>
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<h6 id="panics-1"><a class="doc-anchor" href="#panics-1">§</a>Panics</h6>
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<p>If the conversion can’t be done, such as when the number of items in
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<code>components</code> isn’t a multiple of the number of components in the color
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type.</p>
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</div></details></div><h2 id="dyn-compatibility" class="section-header">Dyn Compatibility<a href="#dyn-compatibility" class="anchor">§</a></h2><div class="dyn-compatibility-info"><p>This trait is <b>not</b> <a href="https://doc.rust-lang.org/nightly/reference/items/traits.html#dyn-compatibility">dyn compatible</a>.</p><p><i>In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.</i></p></div><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><section id="impl-FromComponents%3CC%3E-for-T" class="impl"><a class="src rightside" href="https://docs.rs/palette/0.7.6/src/palette/cast/from_into_components_traits.rs.html#257-260">Source</a><a href="#impl-FromComponents%3CC%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, C> <a class="trait" href="trait.FromComponents.html" title="trait cosmic::cosmic_theme::palette::cast::FromComponents">FromComponents</a><C> for T<div class="where">where
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T: <a class="trait" href="trait.TryFromComponents.html" title="trait cosmic::cosmic_theme::palette::cast::TryFromComponents">TryFromComponents</a><C>,
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<T as <a class="trait" href="trait.TryFromComponents.html" title="trait cosmic::cosmic_theme::palette::cast::TryFromComponents">TryFromComponents</a><C>>::<a class="associatedtype" href="trait.TryFromComponents.html#associatedtype.Error" title="type cosmic::cosmic_theme::palette::cast::TryFromComponents::Error">Error</a>: <a class="trait" href="../../../cctk/sctk/reexports/client/backend/smallvec/alloc/fmt/trait.Debug.html" title="trait cosmic::cctk::sctk::reexports::client::backend::smallvec::alloc::fmt::Debug">Debug</a>,</div></h3></section></div><script src="../../../../trait.impl/palette/cast/from_into_components_traits/trait.FromComponents.js" async></script></section></div></main></body></html> |