cairo-font-options.xml

按照官方的说法：Cairo is a vector graphics library with cross-device output support. 翻译过来

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<refentry id="cairo-Font-Options">
<refmeta>
<refentrytitle id="top_of_page">Font Options</refentrytitle>
<manvolnum>3</manvolnum>
<refmiscinfo>CAIRO Library</refmiscinfo>
</refmeta>

<refnamediv>
<refname>Font Options</refname>
<refpurpose>How a font should be rendered</refpurpose>
<!--[<xref linkend="desc" endterm="desc.title"/>]-->
</refnamediv>

<refsynopsisdiv id="synopsis">
<title id="synopsis.title">Synopsis</title>

<synopsis>



typedef     <link linkend="cairo-font-options-t">cairo_font_options_t</link>;
<link linkend="cairo-font-options-t">cairo_font_options_t</link>* <link linkend="cairo-font-options-create">cairo_font_options_create</link>
                                            (void);
<link linkend="cairo-font-options-t">cairo_font_options_t</link>* <link linkend="cairo-font-options-copy">cairo_font_options_copy</link>
                                            (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *original);
<link linkend="void">void</link>        <link linkend="cairo-font-options-destroy">cairo_font_options_destroy</link>      (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);
<link linkend="cairo-status-t">cairo_status_t</link> <link linkend="cairo-font-options-status">cairo_font_options_status</link>    (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);
<link linkend="void">void</link>        <link linkend="cairo-font-options-merge">cairo_font_options_merge</link>        (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options,
                                             const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *other);
unsigned <link linkend="long">long</link> <link linkend="cairo-font-options-hash">cairo_font_options_hash</link>       (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);
<link linkend="cairo-bool-t">cairo_bool_t</link> <link linkend="cairo-font-options-equal">cairo_font_options_equal</link>       (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *options,
                                             const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *other);
<link linkend="void">void</link>        <link linkend="cairo-font-options-set-antialias">cairo_font_options_set_antialias</link>
                                            (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options,
                                             <link linkend="cairo-antialias-t">cairo_antialias_t</link> antialias);
<link linkend="cairo-antialias-t">cairo_antialias_t</link> <link linkend="cairo-font-options-get-antialias">cairo_font_options_get_antialias</link>
                                            (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);
enum        <link linkend="cairo-subpixel-order-t">cairo_subpixel_order_t</link>;
<link linkend="void">void</link>        <link linkend="cairo-font-options-set-subpixel-order">cairo_font_options_set_subpixel_order</link>
                                            (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options,
                                             <link linkend="cairo-subpixel-order-t">cairo_subpixel_order_t</link> subpixel_order);
<link linkend="cairo-subpixel-order-t">cairo_subpixel_order_t</link> <link linkend="cairo-font-options-get-subpixel-order">cairo_font_options_get_subpixel_order</link>
                                            (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);
enum        <link linkend="cairo-hint-style-t">cairo_hint_style_t</link>;
<link linkend="void">void</link>        <link linkend="cairo-font-options-set-hint-style">cairo_font_options_set_hint_style</link>
                                            (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options,
                                             <link linkend="cairo-hint-style-t">cairo_hint_style_t</link> hint_style);
<link linkend="cairo-hint-style-t">cairo_hint_style_t</link> <link linkend="cairo-font-options-get-hint-style">cairo_font_options_get_hint_style</link>
                                            (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);
enum        <link linkend="cairo-hint-metrics-t">cairo_hint_metrics_t</link>;
<link linkend="void">void</link>        <link linkend="cairo-font-options-set-hint-metrics">cairo_font_options_set_hint_metrics</link>
                                            (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options,
                                             <link linkend="cairo-hint-metrics-t">cairo_hint_metrics_t</link> hint_metrics);
<link linkend="cairo-hint-metrics-t">cairo_hint_metrics_t</link> <link linkend="cairo-font-options-get-hint-metrics">cairo_font_options_get_hint_metrics</link>
                                            (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);
</synopsis>
</refsynopsisdiv>









<refsect1 id="desc">
<title id="desc.title">Description</title>
<para>

</para>
</refsect1>

<refsect1 id="details">
<title id="details.title">Details</title>
<refsect2>
<title><anchor id="cairo-font-options-t" role="typedef"/>cairo_font_options_t</title>
<indexterm><primary>cairo_font_options_t</primary></indexterm><programlisting>typedef struct _cairo_font_options cairo_font_options_t;
</programlisting>
<para>

</para></refsect2>
<refsect2>
<title><anchor id="cairo-font-options-create" role="function"/>cairo_font_options_create ()</title>
<indexterm><primary>cairo_font_options_create</primary></indexterm><programlisting><link linkend="cairo-font-options-t">cairo_font_options_t</link>* cairo_font_options_create
                                            (void);</programlisting>
</refsect2>
<refsect2>
<title><anchor id="cairo-font-options-copy" role="function"/>cairo_font_options_copy ()</title>
<indexterm><primary>cairo_font_options_copy</primary></indexterm><programlisting><link linkend="cairo-font-options-t">cairo_font_options_t</link>* cairo_font_options_copy
                                            (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *original);</programlisting>
</refsect2>
<refsect2>
<title><anchor id="cairo-font-options-destroy" role="function"/>cairo_font_options_destroy ()</title>
<indexterm><primary>cairo_font_options_destroy</primary></indexterm><programlisting><link linkend="void">void</link>        cairo_font_options_destroy      (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);</programlisting>
</refsect2>
<refsect2>
<title><anchor id="cairo-font-options-status" role="function"/>cairo_font_options_status ()</title>
<indexterm><primary>cairo_font_options_status</primary></indexterm><programlisting><link linkend="cairo-status-t">cairo_status_t</link> cairo_font_options_status    (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);</programlisting>
</refsect2>
<refsect2>
<title><anchor id="cairo-font-options-merge" role="function"/>cairo_font_options_merge ()</title>
<indexterm><primary>cairo_font_options_merge</primary></indexterm><programlisting><link linkend="void">void</link>        cairo_font_options_merge        (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options,
                                             const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *other);</programlisting>
</refsect2>
<refsect2>
<title><anchor id="cairo-font-options-hash" role="function"/>cairo_font_options_hash ()</title>
<indexterm><primary>cairo_font_options_hash</primary></indexterm><programlisting>unsigned <link linkend="long">long</link> cairo_font_options_hash       (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);</programlisting>
</refsect2>
<refsect2>
<title><anchor id="cairo-font-options-equal" role="function"/>cairo_font_options_equal ()</title>
<indexterm><primary>cairo_font_options_equal</primary></indexterm><programlisting><link linkend="cairo-bool-t">cairo_bool_t</link> cairo_font_options_equal       (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *options,
                                             const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *other);</programlisting>
</refsect2>
<refsect2>
<title><anchor id="cairo-font-options-set-antialias" role="function"/>cairo_font_options_set_antialias ()</title>
<indexterm><primary>cairo_font_options_set_antialias</primary></indexterm><programlisting><link linkend="void">void</link>        cairo_font_options_set_antialias
                                            (<link linkend="cairo-font-options-t">cairo_font_options_t</link> *options,
                                             <link linkend="cairo-antialias-t">cairo_antialias_t</link> antialias);</programlisting>
</refsect2>
<refsect2>
<title><anchor id="cairo-font-options-get-antialias" role="function"/>cairo_font_options_get_antialias ()</title>
<indexterm><primary>cairo_font_options_get_antialias</primary></indexterm><programlisting><link linkend="cairo-antialias-t">cairo_antialias_t</link> cairo_font_options_get_antialias
                                            (const <link linkend="cairo-font-options-t">cairo_font_options_t</link> *options);</programlisting>
</refsect2>
<refsect2>
<title><anchor id="cairo-subpixel-order-t" role="enum"/>enum cairo_subpixel_order_t</title>
<indexterm><primary>cairo_subpixel_order_t</primary></indexterm><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;
</programlisting>
<para>
The subpixel order specifies the order of color elements within
each pixel on the display device when rendering with an
antialiasing mode of <link linkend="CAIRO-ANTIALIAS-SUBPIXEL:CAPS"><literal>CAIRO_ANTIALIAS_SUBPIXEL</literal></link>.</para>
<para>

</para><variablelist role="enum">
<varlistentry>
<term><anchor id="CAIRO-SUBPIXEL-ORDER-DEFAULT:CAPS" role="constant"/><literal>CAIRO_SUBPIXEL_ORDER_DEFAULT</literal></term>
<listitem><simpara> Use the default subpixel order for
  for the target device
</simpara></listitem>