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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<head>
<title>luaharfbuzz Documentation</title>
<link rel="stylesheet" href="../ldoc.css" type="text/css" />
</head>
<body>
<div id="container">
<div id="product">
<div id="product_logo"></div>
<div id="product_name"><big><b></b></big></div>
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<!-- Menu -->
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<br/>
<h1>luaharfbuzz</h1>
<h2>Examples</h2>
<ul class="nowrap">
<li><strong>core_types.lua</strong></li>
</ul>
<h2>Modules</h2>
<ul class="nowrap">
<li><a href="../index.html">harfbuzz</a></li>
</ul>
</div>
<div id="content">
<h2>core_types.lua</h2>
<pre>
<span class="keyword">local</span> harfbuzz = <span class="global">require</span>(<span class="string">'harfbuzz'</span>)
<span class="keyword">local</span> serpent = <span class="global">require</span>(<span class="string">'serpent'</span>) <span class="comment">-- luarocks install serpent
</span>
<span class="comment">-- Harfbuzz API Version
</span><span class="global">print</span>(<span class="string">"Harfbuzz API version"</span>, harfbuzz.version())
<span class="comment">-- Shapers available
</span><span class="global">print</span>(<span class="string">"Shapers:"</span>, serpent.line({ harfbuzz.shapers() }, {comment = <span class="keyword">false</span>}))
<span class="comment">-- harfbuzz.Face
</span><span class="keyword">local</span> face = harfbuzz.Face.new(<span class="string">'../fonts/notonastaliq.ttf'</span>)
<span class="global">print</span>(<span class="string">'\nFace upem = '</span>..face:get_upem())
<span class="comment">-- harfbuzz.Font
</span><span class="keyword">local</span> font = harfbuzz.Font.new(face)
<span class="keyword">local</span> xs, xy = font:get_scale()
<span class="global">print</span>(<span class="string">"\nDefault font scale = X: "</span>..xs..<span class="string">", Y: "</span>..xy)
<span class="comment">-- harfbuzz.Buffer
</span><span class="keyword">local</span> text = <span class="string">"یہ"</span> <span class="comment">-- U+06CC U+06C1
</span><span class="keyword">local</span> buf = harfbuzz.Buffer.new()
buf:add_utf8(text)
<span class="comment">-- harfbuzz.shape (Shapes text)
</span><span class="global">print</span>(<span class="string">"\nShaping '"</span>..text..<span class="string">"' set with Noto Nastaliq Urdu"</span>)
harfbuzz.shape(font, buf, { language = harfbuzz.Language.new(<span class="string">"urd"</span>), script = harfbuzz.Script.new(<span class="string">"Arab"</span>), direction = harfbuzz.Direction.RTL})
<span class="keyword">local</span> glyphs = buf:get_glyphs()
<span class="global">print</span>(<span class="string">"No. of glyphs"</span>, #glyphs)
<span class="global">print</span>(serpent.line(glyphs, {comment = <span class="keyword">false</span>}))
<span class="keyword">local</span> opts = { language = harfbuzz.Language.new(<span class="string">"eng"</span>), script = harfbuzz.Script.new(<span class="string">"Latn"</span>), direction = harfbuzz.Direction.LTR }
<span class="keyword">local</span> amiri_face = harfbuzz.Face.new(<span class="string">'../fonts/amiri-regular.ttf'</span>)
<span class="keyword">local</span> amiri_font = harfbuzz.Font.new(amiri_face)
<span class="comment">-- shaping '123' w/o features
</span><span class="global">print</span>(<span class="string">"\nShaping '123' set with Amiri Regular and no features"</span>)
buf= harfbuzz.Buffer.new()
buf:add_utf8(<span class="string">"123"</span>)
harfbuzz.shape(amiri_font, buf, opts)
glyphs = buf:get_glyphs()
<span class="global">print</span>(serpent.line(glyphs, {comment = <span class="keyword">false</span>}))
<span class="comment">-- shaping '123' with '+numr' (numerators)
</span><span class="global">print</span>(<span class="string">"\nShaping '123' set with Amiri Regular with 'numr' feature turned on"</span>)
buf= harfbuzz.Buffer.new()
buf:add_utf8(<span class="string">"123"</span>)
opts.features = <span class="string">"+numr"</span>
harfbuzz.shape(amiri_font, buf, opts)
glyphs = buf:get_glyphs()
<span class="global">print</span>(serpent.line(glyphs, {comment = <span class="keyword">false</span>}))</pre>
</div> <!-- id="content" -->
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<div id="about">
<i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
<i style="float:right;">Last updated 2019-07-31 18:39:39 </i>
</div> <!-- id="about" -->
</div> <!-- id="container" -->
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