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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.imageloadfont" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>imageloadfont</refname>
<refpurpose>Load a new font</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type class="union"><type>GdFont</type><type>false</type></type><methodname>imageloadfont</methodname>
<methodparam><type>string</type><parameter>filename</parameter></methodparam>
</methodsynopsis>
<para>
<function>imageloadfont</function> loads a user-defined bitmap and returns
its identifier.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>filename</parameter></term>
<listitem>
<para>
The font file format is currently binary and architecture
dependent. This means you should generate the font files on the
same type of CPU as the machine you are running PHP on.
</para>
<para>
<table>
<title>Font file format</title>
<tgroup cols="3">
<thead>
<row>
<entry>byte position</entry>
<entry>C data type</entry>
<entry>description</entry>
</row>
</thead>
<tbody>
<row>
<entry>byte 0-3</entry>
<entry>int</entry>
<entry>number of characters in the font</entry>
</row>
<row>
<entry>byte 4-7</entry>
<entry>int</entry>
<entry>
value of first character in the font (often 32 for space)
</entry>
</row>
<row>
<entry>byte 8-11</entry>
<entry>int</entry>
<entry>pixel width of each character</entry>
</row>
<row>
<entry>byte 12-15</entry>
<entry>int</entry>
<entry>pixel height of each character</entry>
</row>
<row>
<entry>byte 16-</entry>
<entry>char</entry>
<entry>
array with character data, one byte per pixel in each
character, for a total of (nchars*width*height) bytes.
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns an <classname>GdFont</classname> instance,&return.falseforfailure;.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.1.0</entry>
<entry>
Returns an <classname>GdFont</classname> instance now;
previously, an &integer; was returned.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>imageloadfont</function> usage example</title>
<programlisting role="php">
<![CDATA[
<?php
// Create a new image instance
$im = imagecreatetruecolor(50, 20);
$black = imagecolorallocate($im, 0, 0, 0);
$white = imagecolorallocate($im, 255, 255, 255);
// Make the background white
imagefilledrectangle($im, 0, 0, 49, 19, $white);
// Load the gd font and write 'Hello'
$font = imageloadfont('./04b.gdf');
imagestring($im, $font, 0, 0, 'Hello', $black);
// Output to browser
header('Content-type: image/png');
imagepng($im);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><function>imagefontwidth</function></member>
<member><function>imagefontheight</function></member>
<member><function>imagestring</function></member>
</simplelist>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
|
