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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"><title>Font Options</title><meta name="generator" content="DocBook XSL Stylesheets V1.68.1"><link rel="start" href="index.html" title="Cairo: A Vector Graphics Library"><link rel="up" href="Fonts.html" title="Fonts"><link rel="prev" href="cairo-Scaled-Fonts.html" title="Scaled Fonts"><link rel="next" href="cairo-FreeType-Fonts.html" title="FreeType Fonts"><meta name="generator" content="GTK-Doc V1.6 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="part" href="pt01.html" title="Part I. Tutorial"><link rel="part" href="pt02.html" title="Part II. Reference"><link rel="chapter" href="Drawing.html" title="Drawing"><link rel="chapter" href="Fonts.html" title="Fonts"><link rel="chapter" href="Surfaces.html" title="Surfaces"><link rel="chapter" href="Support.html" title="Utilities"><link rel="index" href="ix01.html" title="Index"><link rel="appendix" href="language-bindings.html" title="Appendix A. Creating a language binding for cairo"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"><td><a accesskey="p" href="cairo-Scaled-Fonts.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="Fonts.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td><td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td><th width="100%" align="center">Cairo: A Vector Graphics Library</th><td><a accesskey="n" href="cairo-FreeType-Fonts.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td></tr><tr><td colspan="5" class="shortcuts"><nobr><a href="#top_of_page" class="shortcut">Top</a>  |  <a href="#desc" class="shortcut">Description</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="cairo-Font-Options"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><span class="refentrytitle"><a name="top_of_page"></a>Font Options</span></h2><p>Font Options — How a font should be rendered</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><a name="synopsis"></a><h2>Synopsis</h2><pre class="synopsis">typedef <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a>;<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a>* <a href="cairo-Font-Options.html#cairo-font-options-create">cairo_font_options_create</a> (void);<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a>* <a href="cairo-Font-Options.html#cairo-font-options-copy">cairo_font_options_copy</a> (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *original);void <a href="cairo-Font-Options.html#cairo-font-options-destroy">cairo_font_options_destroy</a> (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);<a href="cairo-Error-handling.html#cairo-status-t">cairo_status_t</a> <a href="cairo-Font-Options.html#cairo-font-options-status">cairo_font_options_status</a> (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);void <a href="cairo-Font-Options.html#cairo-font-options-merge">cairo_font_options_merge</a> (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options, const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *other);unsigned long <a href="cairo-Font-Options.html#cairo-font-options-hash">cairo_font_options_hash</a> (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);<a href="cairo-Types.html#cairo-bool-t">cairo_bool_t</a> <a href="cairo-Font-Options.html#cairo-font-options-equal">cairo_font_options_equal</a> (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options, const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *other);void <a href="cairo-Font-Options.html#cairo-font-options-set-antialias">cairo_font_options_set_antialias</a> (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options, <a href="cairo-cairo-t.html#cairo-antialias-t">cairo_antialias_t</a> antialias);<a href="cairo-cairo-t.html#cairo-antialias-t">cairo_antialias_t</a> <a href="cairo-Font-Options.html#cairo-font-options-get-antialias">cairo_font_options_get_antialias</a> (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);enum <a href="cairo-Font-Options.html#cairo-subpixel-order-t">cairo_subpixel_order_t</a>;void <a href="cairo-Font-Options.html#cairo-font-options-set-subpixel-order">cairo_font_options_set_subpixel_order</a> (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options, <a href="cairo-Font-Options.html#cairo-subpixel-order-t">cairo_subpixel_order_t</a> subpixel_order);<a href="cairo-Font-Options.html#cairo-subpixel-order-t">cairo_subpixel_order_t</a> <a href="cairo-Font-Options.html#cairo-font-options-get-subpixel-order">cairo_font_options_get_subpixel_order</a> (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);enum <a href="cairo-Font-Options.html#cairo-hint-style-t">cairo_hint_style_t</a>;void <a href="cairo-Font-Options.html#cairo-font-options-set-hint-style">cairo_font_options_set_hint_style</a> (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options, <a href="cairo-Font-Options.html#cairo-hint-style-t">cairo_hint_style_t</a> hint_style);<a href="cairo-Font-Options.html#cairo-hint-style-t">cairo_hint_style_t</a> <a href="cairo-Font-Options.html#cairo-font-options-get-hint-style">cairo_font_options_get_hint_style</a> (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);enum <a href="cairo-Font-Options.html#cairo-hint-metrics-t">cairo_hint_metrics_t</a>;void <a href="cairo-Font-Options.html#cairo-font-options-set-hint-metrics">cairo_font_options_set_hint_metrics</a> (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options, <a href="cairo-Font-Options.html#cairo-hint-metrics-t">cairo_hint_metrics_t</a> hint_metrics);<a href="cairo-Font-Options.html#cairo-hint-metrics-t">cairo_hint_metrics_t</a> <a href="cairo-Font-Options.html#cairo-font-options-get-hint-metrics">cairo_font_options_get_hint_metrics</a> (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);</pre></div><div class="refsect1" lang="en"><a name="desc"></a><h2>Description</h2><p></p></div><div class="refsect1" lang="en"><a name="details"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id2580467"></a><h3><a name="cairo-font-options-t"></a>cairo_font_options_t</h3><a class="indexterm" name="id2580478"></a><pre class="programlisting">typedef struct _cairo_font_options cairo_font_options_t;</pre><p></p></div><hr><div class="refsect2" lang="en"><a name="id2580494"></a><h3><a name="cairo-font-options-create"></a>cairo_font_options_create ()</h3><a class="indexterm" name="id2580505"></a><pre class="programlisting"><a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a>* cairo_font_options_create (void);</pre></div><hr><div class="refsect2" lang="en"><a name="id2580523"></a><h3><a name="cairo-font-options-copy"></a>cairo_font_options_copy ()</h3><a class="indexterm" name="id2580534"></a><pre class="programlisting"><a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a>* cairo_font_options_copy (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *original);</pre></div><hr><div class="refsect2" lang="en"><a name="id2580558"></a><h3><a name="cairo-font-options-destroy"></a>cairo_font_options_destroy ()</h3><a class="indexterm" name="id2580570"></a><pre class="programlisting">void cairo_font_options_destroy (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);</pre></div><hr><div class="refsect2" lang="en"><a name="id2580593"></a><h3><a name="cairo-font-options-status"></a>cairo_font_options_status ()</h3><a class="indexterm" name="id2580605"></a><pre class="programlisting"><a href="cairo-Error-handling.html#cairo-status-t">cairo_status_t</a> cairo_font_options_status (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);</pre></div><hr><div class="refsect2" lang="en"><a name="id2580629"></a><h3><a name="cairo-font-options-merge"></a>cairo_font_options_merge ()</h3><a class="indexterm" name="id2580640"></a><pre class="programlisting">void cairo_font_options_merge (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options, const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *other);</pre></div><hr><div class="refsect2" lang="en"><a name="id2580670"></a><h3><a name="cairo-font-options-hash"></a>cairo_font_options_hash ()</h3><a class="indexterm" name="id2580681"></a><pre class="programlisting">unsigned long cairo_font_options_hash (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);</pre></div><hr><div class="refsect2" lang="en"><a name="id2577906"></a><h3><a name="cairo-font-options-equal"></a>cairo_font_options_equal ()</h3><a class="indexterm" name="id2577917"></a><pre class="programlisting"><a href="cairo-Types.html#cairo-bool-t">cairo_bool_t</a> cairo_font_options_equal (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options, const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *other);</pre></div><hr><div class="refsect2" lang="en"><a name="id2577947"></a><h3><a name="cairo-font-options-set-antialias"></a>cairo_font_options_set_antialias ()</h3><a class="indexterm" name="id2577961"></a><pre class="programlisting">void cairo_font_options_set_antialias (<a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options, <a href="cairo-cairo-t.html#cairo-antialias-t">cairo_antialias_t</a> antialias);</pre></div><hr><div class="refsect2" lang="en"><a name="id2577993"></a><h3><a name="cairo-font-options-get-antialias"></a>cairo_font_options_get_antialias ()</h3><a class="indexterm" name="id2578006"></a><pre class="programlisting"><a href="cairo-cairo-t.html#cairo-antialias-t">cairo_antialias_t</a> cairo_font_options_get_antialias (const <a href="cairo-Font-Options.html#cairo-font-options-t">cairo_font_options_t</a> *options);</pre></div><hr><div class="refsect2" lang="en"><a name="id2578031"></a><h3><a name="cairo-subpixel-order-t"></a>enum cairo_subpixel_order_t</h3><a class="indexterm" name="id2578043"></a><pre class="programlisting">typedef enum _cairo_subpixel_order { CAIRO_SUBPIXEL_ORDER_DEFAULT, CAIRO_SUBPIXEL_ORDER_RGB, CAIRO_SUBPIXEL_ORDER_BGR, CAIRO_SUBPIXEL_ORDER_VRGB, CAIRO_SUBPIXEL_ORDER_VBGR} cairo_subpixel_order_t;</pre><p>The subpixel order specifies the order of color elements withineach pixel on the display device when rendering with anantialiasing mode of <a href="cairo-cairo-t.html#CAIRO-ANTIALIAS-SUBPIXEL:CAPS"><code class="literal">CAIRO_ANTIALIAS_SUBPIXEL</code></a>.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><span class="term"><a name="CAIRO-SUBPIXEL-ORDER-DEFAULT:CAPS"></a><code class="literal">CAIRO_SUBPIXEL_ORDER_DEFAULT</code></span></td><td> Use the default subpixel order for for the target device⌨️ 快捷键说明
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