156 lines
12 KiB
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156 lines
12 KiB
HTML
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<meta name="description" content="API documentation for the Rust `Canvas` struct in crate `qrcode`.">
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<meta name="keywords" content="rust, rustlang, rust-lang, Canvas">
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<title>qrcode::canvas::Canvas - Rust</title>
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<nav class="sidebar">
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<p class='location'><a href='../index.html'>qrcode</a>::<wbr><a href='index.html'>canvas</a></p><script>window.sidebarCurrent = {name: 'Canvas', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<section id='main' class="content struct">
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<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>qrcode</a>::<wbr><a href='index.html'>canvas</a>::<wbr><a class='struct' 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-696' class='srclink' href='../../src/qrcode/src/canvas.rs.html#88-101' title='goto source code'>[src]</a></span></h1>
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<pre class='rust struct'>pub struct Canvas {
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// some fields omitted
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}</pre><div class='docblock'><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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</div><h2 id='methods'>Methods</h2><h3 class='impl'><span class='in-band'><code>impl <a class='struct' href='../../qrcode/canvas/struct.Canvas.html' title='qrcode::canvas::Canvas'>Canvas</a></code></span><span class='out-of-band'><div class='ghost'></div><a id='src-708' class='srclink' href='../../src/qrcode/src/canvas.rs.html#103-160' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.new' class='method'><code>fn <a href='#method.new' class='fnname'>new</a>(version: <a class='enum' href='../../qrcode/types/enum.Version.html' title='qrcode::types::Version'>Version</a>, ec_level: <a class='enum' href='../../qrcode/types/enum.EcLevel.html' title='qrcode::types::EcLevel'>EcLevel</a>) -> <a class='struct' href='../../qrcode/canvas/struct.Canvas.html' title='qrcode::canvas::Canvas'>Canvas</a></code></h4>
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<div class='docblock'><p>Constructs a new canvas big enough for a QR code of the given version.</p>
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</div><h4 id='method.get' class='method'><code>fn <a href='#method.get' class='fnname'>get</a>(&self, x: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i16.html'>i16</a>, y: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i16.html'>i16</a>) -> <a class='enum' href='../../qrcode/canvas/enum.Module.html' title='qrcode::canvas::Module'>Module</a></code></h4>
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<div class='docblock'><p>Obtains a module at the given coordinates. For convenience, negative
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coordinates will wrap around.</p>
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</div><h4 id='method.get_mut' class='method'><code>fn <a href='#method.get_mut' class='fnname'>get_mut</a>(&mut self, x: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i16.html'>i16</a>, y: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i16.html'>i16</a>) -> &mut <a class='enum' href='../../qrcode/canvas/enum.Module.html' title='qrcode::canvas::Module'>Module</a></code></h4>
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<div class='docblock'><p>Obtains a mutable module at the given coordinates. For convenience,
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negative coordinates will wrap around.</p>
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</div><h4 id='method.put' class='method'><code>fn <a href='#method.put' class='fnname'>put</a>(&mut self, x: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i16.html'>i16</a>, y: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i16.html'>i16</a>, module: <a class='enum' href='../../qrcode/canvas/enum.Module.html' title='qrcode::canvas::Module'>Module</a>)</code></h4>
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<div class='docblock'><p>Sets the color of a module at the given coordinates. For convenience,
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negative coordinates will wrap around.</p>
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</div></div><h3 class='impl'><span class='in-band'><code>impl <a class='struct' href='../../qrcode/canvas/struct.Canvas.html' title='qrcode::canvas::Canvas'>Canvas</a></code></span><span class='out-of-band'><div class='ghost'></div><a id='src-813' class='srclink' href='../../src/qrcode/src/canvas.rs.html#877-891' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.draw_all_functional_patterns' class='method'><code>fn <a href='#method.draw_all_functional_patterns' class='fnname'>draw_all_functional_patterns</a>(&mut self)</code></h4>
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<div class='docblock'><p>Draw all functional patterns, before data placement.</p>
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<p>All functional patterns (e.g. the finder pattern) <em>except</em> the format
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info pattern will be filled in. The format info pattern will be filled
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with light modules instead. Data bits can then put in the empty modules.
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with <code>.draw_data()</code>.</p>
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</div></div><h3 class='impl'><span class='in-band'><code>impl <a class='struct' href='../../qrcode/canvas/struct.Canvas.html' title='qrcode::canvas::Canvas'>Canvas</a></code></span><span class='out-of-band'><div class='ghost'></div><a id='src-848' class='srclink' href='../../src/qrcode/src/canvas.rs.html#1273-1314' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.draw_data' class='method'><code>fn <a href='#method.draw_data' class='fnname'>draw_data</a>(&mut self, data: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.slice.html'>&[</a><a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u8.html'>u8</a><a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.slice.html'>]</a>, ec: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.slice.html'>&[</a><a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u8.html'>u8</a><a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.slice.html'>]</a>)</code></h4>
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<div class='docblock'><p>Draws the encoded data and error correction codes to the empty modules.</p>
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</div></div><h3 class='impl'><span class='in-band'><code>impl <a class='struct' href='../../qrcode/canvas/struct.Canvas.html' title='qrcode::canvas::Canvas'>Canvas</a></code></span><span class='out-of-band'><div class='ghost'></div><a id='src-933' class='srclink' href='../../src/qrcode/src/canvas.rs.html#1430-1481' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.apply_mask' class='method'><code>fn <a href='#method.apply_mask' class='fnname'>apply_mask</a>(&mut self, pattern: <a class='enum' href='../../qrcode/canvas/enum.MaskPattern.html' title='qrcode::canvas::MaskPattern'>MaskPattern</a>)</code></h4>
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<div class='docblock'><p>Applies a mask to the canvas. This method will also draw the format info
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patterns.</p>
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</div></div><h3 class='impl'><span class='in-band'><code>impl <a class='struct' href='../../qrcode/canvas/struct.Canvas.html' title='qrcode::canvas::Canvas'>Canvas</a></code></span><span class='out-of-band'><div class='ghost'></div><a id='src-1037' class='srclink' href='../../src/qrcode/src/canvas.rs.html#1850-1882' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.apply_best_mask' class='method'><code>fn <a href='#method.apply_best_mask' class='fnname'>apply_best_mask</a>(&self) -> <a class='struct' href='../../qrcode/canvas/struct.Canvas.html' title='qrcode::canvas::Canvas'>Canvas</a></code></h4>
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<div class='docblock'><p>Construct a new canvas and apply the best masking that gives the lowest
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penalty score.</p>
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</div><h4 id='method.to_bools' class='method'><code>fn <a href='#method.to_bools' class='fnname'>to_bools</a>(&self) -> <a class='struct' href='https://doc.rust-lang.org/nightly/collections/vec/struct.Vec.html' title='collections::vec::Vec'>Vec</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.bool.html'>bool</a>></code></h4>
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<div class='docblock'><p>Convert the modules into a vector of booleans.</p>
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</div></div><h2 id='implementations'>Trait Implementations</h2><h3 id='derived_implementations'>Derived Implementations </h3><h3 class='impl'><span class='in-band'><code>impl <a class='trait' href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html' title='core::clone::Clone'>Clone</a> for <a class='struct' href='../../qrcode/canvas/struct.Canvas.html' title='qrcode::canvas::Canvas'>Canvas</a></code></span><span class='out-of-band'><div class='ghost'></div><a id='src-701' class='srclink' href='../../src/qrcode/src/canvas.rs.html#87' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.clone' class='method'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> <a class='struct' href='../../qrcode/canvas/struct.Canvas.html' title='qrcode::canvas::Canvas'>Canvas</a></code></h4>
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<div class='docblock'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
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</div><h4 id='method.clone_from' class='method'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: &Self)</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div></h4>
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<div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
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