159 lines
7.3 KiB
HTML
159 lines
7.3 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="generator" content="rustdoc">
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<meta name="description" content="API documentation for the Rust `canvas` mod in crate `qrcode`.">
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<meta name="keywords" content="rust, rustlang, rust-lang, canvas">
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<title>qrcode::canvas - Rust</title>
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<link rel="stylesheet" type="text/css" href="../../rustdoc.css">
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<link rel="stylesheet" type="text/css" href="../../main.css">
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</head>
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<body class="rustdoc">
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<!--[if lte IE 8]>
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<div class="warning">
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This old browser is unsupported and will most likely display funky
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things.
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</div>
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<![endif]-->
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<nav class="sidebar">
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<p class='location'><a href='../index.html'>qrcode</a></p><script>window.sidebarCurrent = {name: 'canvas', ty: 'mod', relpath: '../'};</script><script defer src="../sidebar-items.js"></script>
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</nav>
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<nav class="sub">
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<form class="search-form js-only">
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<div class="search-container">
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<input class="search-input" name="search"
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autocomplete="off"
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placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
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type="search">
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</div>
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</form>
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</nav>
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<section id='main' class="content mod">
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<h1 class='fqn'><span class='in-band'>Module <a href='../index.html'>qrcode</a>::<wbr><a class='mod' href=''>canvas</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 id='src-650' class='srclink' href='../../src/qrcode/src/canvas.rs.html#1-1882' title='goto source code'>[src]</a></span></h1>
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<div class='docblock'><p>The <code>canvas</code> module puts raw bits into the QR code canvas.</p>
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<pre class='rust rust-example-rendered'>
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<span class='kw'>use</span> <span class='ident'>qrcode</span>::<span class='ident'>types</span>::{<span class='ident'>Version</span>, <span class='ident'>EcLevel</span>};
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<span class='kw'>use</span> <span class='ident'>qrcode</span>::<span class='ident'>canvas</span>::{<span class='ident'>Canvas</span>, <span class='ident'>MaskPattern</span>};
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<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>c</span> <span class='op'>=</span> <span class='ident'>Canvas</span>::<span class='ident'>new</span>(<span class='ident'>Version</span>::<span class='ident'>Normal</span>(<span class='number'>1</span>), <span class='ident'>EcLevel</span>::<span class='ident'>L</span>);
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<span class='ident'>c</span>.<span class='ident'>draw_all_functional_patterns</span>();
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<span class='ident'>c</span>.<span class='ident'>draw_data</span>(<span class='string'>b"data_here"</span>, <span class='string'>b"ec_code_here"</span>);
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<span class='ident'>c</span>.<span class='ident'>apply_mask</span>(<span class='ident'>MaskPattern</span>::<span class='ident'>Checkerboard</span>);
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<span class='kw'>let</span> <span class='ident'>bools</span> <span class='op'>=</span> <span class='ident'>c</span>.<span class='ident'>to_bools</span>();</pre>
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</div><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class='struct' href='struct.Canvas.html'
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title='qrcode::canvas::Canvas'>Canvas</a></td>
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<td class='docblock short'>
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<p><code>Canvas</code> is an intermediate helper structure to render error-corrected data
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into a QR code.</p>
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</td>
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</tr></table><h2 id='enums' class='section-header'><a href="#enums">Enums</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class='enum' href='enum.MaskPattern.html'
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title='qrcode::canvas::MaskPattern'>MaskPattern</a></td>
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<td class='docblock short'>
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<p>The mask patterns. Since QR code and Micro QR code do not use the same
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pattern number, we name them according to their shape instead of the number.</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='enum' href='enum.Module.html'
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title='qrcode::canvas::Module'>Module</a></td>
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<td class='docblock short'>
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<p>The color of a module (pixel) in the QR code.</p>
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</td>
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</tr></table><h2 id='functions' class='section-header'><a href="#functions">Functions</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class='fn' href='fn.is_functional.html'
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title='qrcode::canvas::is_functional'>is_functional</a></td>
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<td class='docblock short'>
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<p>Gets whether the module at the given coordinates represents a functional
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module.</p>
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</td>
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</tr></table></section>
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<section id='search' class="content hidden"></section>
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<section class="footer"></section>
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<aside id="help" class="hidden">
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<div>
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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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<dl>
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<dt>?</dt>
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<dd>Show this help dialog</dd>
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<dt>S</dt>
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<dd>Focus the search field</dd>
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<dt>⇤</dt>
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<dd>Move up in search results</dd>
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<dt>⇥</dt>
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<dd>Move down in search results</dd>
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<dt>⏎</dt>
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<dd>Go to active search result</dd>
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<dt>+</dt>
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<dd>Collapse/expand all sections</dd>
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</dl>
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</div>
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<div class="infos">
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<h2>Search Tricks</h2>
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<p>
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Prefix searches with a type followed by a colon (e.g.
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<code>fn:</code>) to restrict the search to a given type.
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</p>
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<p>
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Accepted types are: <code>fn</code>, <code>mod</code>,
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<code>struct</code>, <code>enum</code>,
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<code>trait</code>, <code>type</code>, <code>macro</code>,
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and <code>const</code>.
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</p>
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<p>
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Search functions by type signature (e.g.
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<code>vec -> usize</code> or <code>* -> vec</code>)
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</p>
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</div>
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</div>
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</aside>
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<script>
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window.rootPath = "../../";
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window.currentCrate = "qrcode";
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window.playgroundUrl = "";
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</script>
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<script src="../../jquery.js"></script>
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<script src="../../main.js"></script>
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<script defer src="../../search-index.js"></script>
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</body>
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</html>
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