freetype-fonts.xml

GTK+-2.0源码之pango-1.15.6.tar.gz

</para><variablelist role="params">
<varlistentry><term><parameter>pattern</parameter>&nbsp;:</term>
<listitem><simpara>the <type>FcPattern</type> to tweak.
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>data</parameter>&nbsp;:</term>
<listitem><simpara>user data.


</simpara></listitem></varlistentry>
</variablelist></refsect2>
<refsect2>
<title><anchor id="pango-ft2-font-map-set-default-substitute" role="function" condition="since:1.2"/>pango_ft2_font_map_set_default_substitute ()</title>
<indexterm role="1.2"><primary>pango_ft2_font_map_set_default_substitute</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ft2_font_map_set_default_substitute
                                            (<link linkend="PangoFT2FontMap">PangoFT2FontMap</link> *fontmap,
                                             <link linkend="PangoFT2SubstituteFunc">PangoFT2SubstituteFunc</link> func,
                                             <link linkend="gpointer">gpointer</link> data,
                                             <link linkend="GDestroyNotify">GDestroyNotify</link> notify);</programlisting>
<para>
Sets a function that will be called to do final configuration
substitution on a <link linkend="FcPattern"><type>FcPattern</type></link> before it is used to load
the font. This function can be used to do things like set
hinting and antialiasing options.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>fontmap</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoFT2FontMap"><type>PangoFT2FontMap</type></link>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>func</parameter>&nbsp;:</term>
<listitem><simpara> function to call to to do final config tweaking
       on <link linkend="FcPattern"><type>FcPattern</type></link> objects.
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>data</parameter>&nbsp;:</term>
<listitem><simpara> data to pass to <parameter>func</parameter>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>notify</parameter>&nbsp;:</term>
<listitem><simpara> function to call when <parameter>data</parameter> is no longer used.
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.2
</para></refsect2>
<refsect2>
<title><anchor id="pango-ft2-font-map-substitute-changed" role="function" condition="since:1.2"/>pango_ft2_font_map_substitute_changed ()</title>
<indexterm role="1.2"><primary>pango_ft2_font_map_substitute_changed</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ft2_font_map_substitute_changed
                                            (<link linkend="PangoFT2FontMap">PangoFT2FontMap</link> *fontmap);</programlisting>
<para>
Call this function any time the results of the
default substitution function set with
<link linkend="pango-ft2-font-map-set-default-substitute"><function>pango_ft2_font_map_set_default_substitute()</function></link> change.
That is, if your substitution function will return different
results for the same input pattern, you must call this function.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>fontmap</parameter>&nbsp;:</term>
<listitem><simpara> a <link linkend="PangoFT2Fontmap"><type>PangoFT2Fontmap</type></link>
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.2
</para></refsect2>
<refsect2>
<title><anchor id="pango-ft2-get-context" role="function" condition="deprecated:"/>pango_ft2_get_context ()</title>
<indexterm role="deprecated"><primary>pango_ft2_get_context</primary></indexterm><programlisting><link linkend="PangoContext">PangoContext</link>* pango_ft2_get_context         (<link linkend="double">double</link> dpi_x,
                                             <link linkend="double">double</link> dpi_y);</programlisting>
<warning><para><literal>pango_ft2_get_context</literal> is deprecated and should not be used in newly-written code.</para></warning>
<para>
Retrieves a <link linkend="PangoContext"><type>PangoContext</type></link> for the default PangoFT2 fontmap
(see <link linkend="pango-ft2-fontmap-get-for-display"><function>pango_ft2_fontmap_get_for_display()</function></link>) and sets the resolution
for the default fontmap to <parameter>dpi_x</parameter> by <parameter>dpi_y</parameter>.
</para>
<para>
Use of this function is deprecated; see <link linkend="pango-ft2-fontmap-create-context"><function>pango_ft2_fontmap_create_context()</function></link>
instead.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>dpi_x</parameter>&nbsp;:</term>
<listitem><simpara>  the horizontal DPI of the target device
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>dpi_y</parameter>&nbsp;:</term>
<listitem><simpara>  the vertical DPI of the target device
</simpara></listitem></varlistentry>
<varlistentry><term><emphasis>Returns</emphasis>&nbsp;:</term><listitem><simpara> the new <link linkend="PangoContext"><type>PangoContext</type></link>
</simpara></listitem></varlistentry>
</variablelist></refsect2>
<refsect2>
<title><anchor id="pango-ft2-render" role="function"/>pango_ft2_render ()</title>
<indexterm><primary>pango_ft2_render</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ft2_render                (<link linkend="FT-Bitmap">FT_Bitmap</link> *bitmap,
                                             <link linkend="PangoFont">PangoFont</link> *font,
                                             <link linkend="PangoGlyphString">PangoGlyphString</link> *glyphs,
                                             <link linkend="gint">gint</link> x,
                                             <link linkend="gint">gint</link> y);</programlisting>
<para>
Renders a <link linkend="PangoGlyphString"><type>PangoGlyphString</type></link> onto a FreeType2 bitmap.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>bitmap</parameter>&nbsp;:</term>
<listitem><simpara>  the FreeType2 bitmap onto which to draw the string
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>font</parameter>&nbsp;:</term>
<listitem><simpara>    the font in which to draw the string
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>glyphs</parameter>&nbsp;:</term>
<listitem><simpara>  the glyph string to draw
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>x</parameter>&nbsp;:</term>
<listitem><simpara>       the x position of the start of the string (in pixels)
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>y</parameter>&nbsp;:</term>
<listitem><simpara>       the y position of the baseline (in pixels)
</simpara></listitem></varlistentry>
</variablelist></refsect2>
<refsect2>
<title><anchor id="pango-ft2-render-transformed" role="function" condition="since:1.6"/>pango_ft2_render_transformed ()</title>
<indexterm role="1.6"><primary>pango_ft2_render_transformed</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ft2_render_transformed    (<link linkend="FT-Bitmap">FT_Bitmap</link> *bitmap,
                                             const <link linkend="PangoMatrix">PangoMatrix</link> *matrix,
                                             <link linkend="PangoFont">PangoFont</link> *font,
                                             <link linkend="PangoGlyphString">PangoGlyphString</link> *glyphs,
                                             <link linkend="int">int</link> x,
                                             <link linkend="int">int</link> y);</programlisting>
<para>
Renders a <link linkend="PangoGlyphString"><type>PangoGlyphString</type></link> onto a FreeType2 bitmap, possibly
transforming the layed-out coordinates through a transformation
matrix. Note that the transformation matrix for <parameter>font</parameter> is not
changed, so to produce correct rendering results, the <parameter>font</parameter>
must have been loaded using a <link linkend="PangoContext"><type>PangoContext</type></link> with an identical
transformation matrix to that passed in to this function.</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>bitmap</parameter>&nbsp;:</term>
<listitem><simpara>  the FreeType2 bitmap onto which to draw the string
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>matrix</parameter>&nbsp;:</term>
<listitem><simpara>  a <link linkend="PangoMatrix"><type>PangoMatrix</type></link>, or <link linkend="NULL:CAPS"><literal>NULL</literal></link> to use an identity transformation
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>font</parameter>&nbsp;:</term>
<listitem><simpara>    the font in which to draw the string
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>glyphs</parameter>&nbsp;:</term>
<listitem><simpara>  the glyph string to draw
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>x</parameter>&nbsp;:</term>
<listitem><simpara>       the x position of the start of the string (in Pango
          units in user space coordinates)
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>y</parameter>&nbsp;:</term>
<listitem><simpara>       the y position of the baseline (in Pango units
          in user space coordinates)
</simpara></listitem></varlistentry>
</variablelist><para>Since  1.6
</para></refsect2>
<refsect2>
<title><anchor id="pango-ft2-render-layout-line" role="function"/>pango_ft2_render_layout_line ()</title>
<indexterm><primary>pango_ft2_render_layout_line</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ft2_render_layout_line    (<link linkend="FT-Bitmap">FT_Bitmap</link> *bitmap,
                                             <link linkend="PangoLayoutLine">PangoLayoutLine</link> *line,
                                             <link linkend="int">int</link> x,
                                             <link linkend="int">int</link> y);</programlisting>
<para>
Render a <link linkend="PangoLayoutLine"><type>PangoLayoutLine</type></link> onto a FreeType2 bitmap</para>
<para>

</para><variablelist role="params">
<varlistentry><term><parameter>bitmap</parameter>&nbsp;:</term>
<listitem><simpara>    a <type>FT_Bitmap</type> to render the line onto
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>line</parameter>&nbsp;:</term>
<listitem><simpara>      a <link linkend="PangoLayoutLine"><type>PangoLayoutLine</type></link>
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>x</parameter>&nbsp;:</term>
<listitem><simpara>         the x position of start of string (in pixels)
</simpara></listitem></varlistentry>
<varlistentry><term><parameter>y</parameter>&nbsp;:</term>
<listitem><simpara>         the y position of baseline (in pixels)
</simpara></listitem></varlistentry>
</variablelist></refsect2>
<refsect2>
<title><anchor id="pango-ft2-render-layout-line-subpixel" role="function" condition="since:1.6"/>pango_ft2_render_layout_line_subpixel ()</title>
<indexterm role="1.6"><primary>pango_ft2_render_layout_line_subpixel</primary></indexterm><programlisting><link linkend="void">void</link>        pango_ft2_render_layout_line_subpixel
                                            (<link linkend="FT-Bitmap">FT_Bitmap</link> *bitmap,
                                             <link linkend="PangoLayoutLine">PangoLayoutLine</link> *line,
                                             <link linkend="int">int</link> x,
                                             <link linkend="int">int</link> y);</programlisting>
<para>
Render a <link linkend="PangoLayoutLine"><type>PangoLayoutLine</type></link> onto a FreeType2 bitmap, with he
location specified in fixed-point Pango units rather than
pixels. (Using this will avoid extra inaccuracies from
rounding to integer pixels multiple times, even if the
final glyph positions are integers.)</para>
<para>

</para><variablelist role="params">