content/glyph/book/extending/layouts.html
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<h2>Layouts</h2>
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<div class="navigation"><a href="/glyph/book/extending/interpreting.html">Interpreting Glyph Code ←</a><a href="/glyph/book/index.html">Contents</a><a href="/glyph/book/extending/further_reading.html">→ Further Reading</a></div>
<p>When generating <a href="/glyph/book/text_editing/topics.html#topics">topic</a>-based outputs, Glyph uses <em>layouts</em> to render topics as standalone documents. By default, the following two layout are used:</p>
<ul>
<li><code>topic</code> — used to render standard topics.</li>
<li><code>index</code> — used to render the index page of your document.</li>
</ul>
<p>Layouts are nothing more than “fancy” Glyph macros defined using the Glyph language (i.e. by using <a href="/glyph/book/extending/interpreting.html#rewriting">macro rewriting</a>) within a single <code>.glyph</code> file.</p>
<div class="section">
<h5 id="h_84">Topic Layout</h5>
<p>The default layout used to render all web topics (the layout used for web5 topics is very similar) is defined as follows:</p>
<pre class="lazy"><span class="line-numbers"> 1 </span> document[
<span class="line-numbers"> 2 </span> head[
<span class="line-numbers"> 3 </span> style[default.css]
<span class="line-numbers"> 4 </span> ]
<span class="line-numbers"> 5 </span> body[
<span class="line-numbers"> 6 </span> @class[topic]
<span class="line-numbers"> 7 </span> section[
<span class="line-numbers"> 8 </span> @title[{{title}}]
<span class="line-numbers"> 9 </span> @id[{{id}}]
<span class="line-numbers"> 10 </span> navigation[{{id}}]
<span class="line-numbers"> 11 </span> {{contents}}
<span class="line-numbers"> 12 </span> navigation[{{id}}]
<span class="line-numbers"> 13 </span> ]
<span class="line-numbers"> 14 </span> ]
<span class="line-numbers"> 15 </span> ]
</pre>
<p>Note that it takes the following attributes, passed automatically by Glyph when processing each topic:</p>
<ul>
<li><code>title</code> — the title of the topic.</li>
<li><code>id</code> — the ID of the topic.</li>
<li><code>contents</code> — the body of the topic.</li>
</ul>
</div>
<div class="section">
<h5 id="index_layout">Index Layout</h5>
<p>The default layout used to render the web index page (the layout used for the web5 index is very similar) is defined as follows:</p>
<pre class="lazy"><span class="line-numbers"> 1 </span> document[
<span class="line-numbers"> 2 </span> head[
<span class="line-numbers"> 3 </span> style[default.css]
<span class="line-numbers"> 4 </span> ]
<span class="line-numbers"> 5 </span> body[
<span class="line-numbers"> 6 </span> @class[topic]
<span class="line-numbers"> 7 </span> halftitlepage[
<span class="line-numbers"> 8 </span> title[]
<span class="line-numbers"> 9 </span> subtitle[]
<span class="line-numbers"> 10 </span> author[]
<span class="line-numbers"> 11 </span> ]
<span class="line-numbers"> 12 </span> frontmatter[
<span class="line-numbers"> 13 </span> toc[]
<span class="line-numbers"> 14 </span> ]
<span class="line-numbers"> 15 </span> ]
<span class="line-numbers"> 16 </span> ]
</pre>
<p>Index layouts do not take any attribute or parameter (basically because they are used to produce only one page).</p>
</div>
<div class="section">
<h5 id="h_86">Creating a Custom Layout</h5>
<p>To create a custom layout, proceed as follows:</p>
<ul>
<li>Create a <code>.glyph</code> file in the <code>lib/layouts</code> directory, within your project, e.g. <code>mytopic.glyph</code></li>
<li>Add the layout code, making sure (for topic layouts) that all the attributes (<code>title</code>, <code>id</code>, <code>contents</code>) are specified correctly.</li>
<li>Set the <code>output.*.layouts.topic</code> setting to the name of the new layout (<code>mytopic</code>).</li>
</ul>
<div class="tip">
<span class="note-title">Tip</span>You can override which layout to use on a specific topic by specifying it in a <code>@layout</code> attribute.
</div>
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<div class="navigation"><a href="/glyph/book/extending/interpreting.html">Interpreting Glyph Code ←</a><a href="/glyph/book/index.html">Contents</a><a href="/glyph/book/extending/further_reading.html">→ Further Reading</a></div>
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