opentype.xml

GTK+-2.0源码之pango-1.15.6.tar.gz

</variablelist><para>Since  1.4
</para></refsect2>
<refsect2>
<title><anchor id="pango-ot-buffer-destroy" role="function" condition="since:1.4"/>pango_ot_buffer_destroy ()</title>
<indexterm role="1.4"><primary>pango_ot_buffer_destroy</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_buffer_destroy         (<link linkend="PangoOTBuffer">PangoOTBuffer</link> *buffer);</programlisting>
<para>
Destroys a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link> and free all associated memory.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>buffer</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.4
</para></refsect2>
<refsect2>
<title><anchor id="pango-ot-buffer-clear" role="function" condition="since:1.4"/>pango_ot_buffer_clear ()</title>
<indexterm role="1.4"><primary>pango_ot_buffer_clear</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_buffer_clear           (<link linkend="PangoOTBuffer">PangoOTBuffer</link> *buffer);</programlisting>
<para>
Empties a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>, make it ready to add glyphs to.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>buffer</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.4
</para></refsect2>
<refsect2>
<title><anchor id="pango-ot-buffer-add-glyph" role="function" condition="since:1.4"/>pango_ot_buffer_add_glyph ()</title>
<indexterm role="1.4"><primary>pango_ot_buffer_add_glyph</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_buffer_add_glyph       (<link linkend="PangoOTBuffer">PangoOTBuffer</link> *buffer,
                                             <link linkend="guint">guint</link> glyph,
                                             <link linkend="guint">guint</link> properties,
                                             <link linkend="guint">guint</link> cluster);</programlisting>
<para>
Appends a glyph to a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>, with <parameter>properties</parameter> identifying which
features should be applied on this glyph.  See <link linkend="pango-ruleset-add-feature"><function>pango_ruleset_add_feature()</function></link>.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>buffer</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>glyph</parameter>&nbsp;:</term>
<listitem><simpara> the glyph index to add, like a <link linkend="PangoGlyph"><type>PangoGlyph</type></link>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>properties</parameter>&nbsp;:</term>
<listitem><simpara> the glyph properties
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>cluster</parameter>&nbsp;:</term>
<listitem><simpara> the cluster that this glyph belongs to
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.4
</para></refsect2>
<refsect2>
<title><anchor id="pango-ot-buffer-set-rtl" role="function" condition="since:1.4"/>pango_ot_buffer_set_rtl ()</title>
<indexterm role="1.4"><primary>pango_ot_buffer_set_rtl</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_buffer_set_rtl         (<link linkend="PangoOTBuffer">PangoOTBuffer</link> *buffer,
                                             <link linkend="gboolean">gboolean</link> rtl);</programlisting>
<para>
Sets whether glyphs will be rendered right-to-left.  This setting
is needed for proper horizontal positioning of right-to-left scripts.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>buffer</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>rtl</parameter>&nbsp;:</term>
<listitem><simpara> <link linkend="TRUE:CAPS"><literal>TRUE</literal></link> for right-to-left text
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.4
</para></refsect2>
<refsect2>
<title><anchor id="pango-ot-buffer-set-zero-width-marks" role="function" condition="since:1.6"/>pango_ot_buffer_set_zero_width_marks ()</title>
<indexterm role="1.6"><primary>pango_ot_buffer_set_zero_width_marks</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_buffer_set_zero_width_marks
                                            (<link linkend="PangoOTBuffer">PangoOTBuffer</link> *buffer,
                                             <link linkend="gboolean">gboolean</link> zero_width_marks);</programlisting>
<para>
Sets whether characters with a mark class should be forced to zero width.
This setting is needed for proper positioning of Arabic accents,
but will produce incorrect results with standard OpenType Indic
fonts.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>buffer</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>zero_width_marks</parameter>&nbsp;:</term>
<listitem><simpara> <link linkend="TRUE:CAPS"><literal>TRUE</literal></link> if characters with a mark class should
 be forced to zero width.
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.6
</para></refsect2>
<refsect2>
<title><anchor id="pango-ot-buffer-get-glyphs" role="function" condition="since:1.4"/>pango_ot_buffer_get_glyphs ()</title>
<indexterm role="1.4"><primary>pango_ot_buffer_get_glyphs</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_buffer_get_glyphs      (<link linkend="PangoOTBuffer">PangoOTBuffer</link> *buffer,
                                             <link linkend="PangoOTGlyph">PangoOTGlyph</link> **glyphs,
                                             <link linkend="int">int</link> *n_glyphs);</programlisting>
<para>
Gets the glyph array contained in a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>.  The glyphs are
owned by the buffer and should not be freed, and are only valid as long
as buffer is not modified.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>buffer</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>glyphs</parameter>&nbsp;:</term>
<listitem><simpara> location to store the array of glyphs, or <link linkend="NULL:CAPS"><literal>NULL</literal></link>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>n_glyphs</parameter>&nbsp;:</term>
<listitem><simpara> location to store the number of glyphs, or <link linkend="NULL:CAPS"><literal>NULL</literal></link>
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.4
</para></refsect2>
<refsect2>
<title><anchor id="pango-ot-buffer-output" role="function" condition="since:1.4"/>pango_ot_buffer_output ()</title>
<indexterm role="1.4"><primary>pango_ot_buffer_output</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_buffer_output          (<link linkend="PangoOTBuffer">PangoOTBuffer</link> *buffer,
                                             <link linkend="PangoGlyphString">PangoGlyphString</link> *glyphs);</programlisting>
<para>
Exports the glyphs in a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link> into a <link linkend="PangoGlyphString"><type>PangoGlyphString</type></link>.  This is
typically used after the OpenType layout processing is over, to convert the
resulting glyphs into a generic Pango glyph string.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>buffer</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>glyphs</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoGlyphString"><type>PangoGlyphString</type></link>
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.4
</para></refsect2>
<refsect2>
<title><anchor id="pango-ot-ruleset-new" role="function"/>pango_ot_ruleset_new ()</title>
<indexterm><primary>pango_ot_ruleset_new</primary></indexterm><programlisting><link linkend="PangoOTRuleset">PangoOTRuleset</link>* pango_ot_ruleset_new        (<link linkend="PangoOTInfo">PangoOTInfo</link> *info);</programlisting>
<para>
Creates a new <link linkend="PangoOTRuleset"><type>PangoOTRuleset</type></link> for the given OpenType info.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>info</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTInfo"><type>PangoOTInfo</type></link>.
</simpara></listitem></varlistentry>
<varlistentry><term><emphasis>Returns</emphasis>&nbsp;:</term><listitem><simpara> the newly allocated <link linkend="PangoOTRuleset"><type>PangoOTRuleset</type></link>, which
              should be freed with <link linkend="g-object-unref"><function>g_object_unref()</function></link>.
</simpara></listitem></varlistentry>
</variablelist></refsect2>
<refsect2>
<title><anchor id="pango-ot-ruleset-add-feature" role="function"/>pango_ot_ruleset_add_feature ()</title>
<indexterm><primary>pango_ot_ruleset_add_feature</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_ruleset_add_feature    (<link linkend="PangoOTRuleset">PangoOTRuleset</link> *ruleset,
                                             <link linkend="PangoOTTableType">PangoOTTableType</link> table_type,
                                             <link linkend="guint">guint</link> feature_index,
                                             <link linkend="gulong">gulong</link> property_bit);</programlisting>
<para>
Adds a feature to the ruleset.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>ruleset</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTRuleset"><type>PangoOTRuleset</type></link>.
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>table_type</parameter>&nbsp;:</term>
<listitem><simpara> the table type to add a feature to.
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>feature_index</parameter>&nbsp;:</term>
<listitem><simpara> the index of the feature to add.
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>property_bit</parameter>&nbsp;:</term>
<listitem><simpara> the property bit to use for this feature. Used to identify
               the glyphs that this feature should be applied to, or
               <link linkend="PANGO-OT-ALL-GLYPHS:CAPS"><literal>PANGO_OT_ALL_GLYPHS</literal></link> if it should be applied to all glyphs.
</simpara></listitem></varlistentry>
</variablelist></refsect2>
<refsect2>
<title><anchor id="pango-ot-ruleset-substitute" role="function" condition="since:1.4"/>pango_ot_ruleset_substitute ()</title>
<indexterm role="1.4"><primary>pango_ot_ruleset_substitute</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_ruleset_substitute     (<link linkend="PangoOTRuleset">PangoOTRuleset</link> *ruleset,
                                             <link linkend="PangoOTBuffer">PangoOTBuffer</link> *buffer);</programlisting>
<para>
Performs the OpenType GSUB substitution on <parameter>buffer</parameter> using the features
in <parameter>ruleset</parameter></para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>ruleset</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTRuleset"><type>PangoOTRuleset</type></link>.
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>buffer</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>.
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.4
</para></refsect2>
<refsect2>
<title><anchor id="pango-ot-ruleset-position" role="function" condition="since:1.4"/>pango_ot_ruleset_position ()</title>
<indexterm role="1.4"><primary>pango_ot_ruleset_position</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ot_ruleset_position       (<link linkend="PangoOTRuleset">PangoOTRuleset</link> *ruleset,
                                             <link linkend="PangoOTBuffer">PangoOTBuffer</link> *buffer);</programlisting>
<para>
Performs the OpenType GPOS positioning on <parameter>buffer</parameter> using the features
in <parameter>ruleset</parameter></para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>ruleset</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTRuleset"><type>PangoOTRuleset</type></link>.
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>buffer</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoOTBuffer"><type>PangoOTBuffer</type></link>.
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.4
</para></refsect2>

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