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https://github.com/sigmasternchen/php-doc-en
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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@137938 c90b9560-bf6c-de11-be94-00142212c4b1
122 lines
4.6 KiB
XML
122 lines
4.6 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.8 $ -->
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<!-- splitted from ./en/functions/image.xml, last change in rev 1.2 -->
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<refentry id="function.imagettftext">
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<refnamediv>
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<refname>imagettftext</refname>
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<refpurpose>Write text to the image using TrueType fonts</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>array</type><methodname>imagettftext</methodname>
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<methodparam><type>resource</type><parameter>image</parameter></methodparam>
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<methodparam><type>int</type><parameter>size</parameter></methodparam>
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<methodparam><type>int</type><parameter>angle</parameter></methodparam>
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<methodparam><type>int</type><parameter>x</parameter></methodparam>
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<methodparam><type>int</type><parameter>y</parameter></methodparam>
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<methodparam><type>int</type><parameter>color</parameter></methodparam>
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<methodparam><type>string</type><parameter>fontfile</parameter></methodparam>
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<methodparam><type>string</type><parameter>text</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>imagettftext</function> draws the string
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<parameter>text</parameter> in the image identified by
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<parameter>image</parameter>, starting at coordinates
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<parameter>x</parameter>, <parameter>y</parameter> (top left is 0, 0), at
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an angle of <parameter>angle</parameter> in color
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<parameter>color</parameter>, using the TrueType font file identified by
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<parameter>fontfile</parameter>. Depending on which version of the GD
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library that PHP is using, when <parameter>fontfile</parameter> does not
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begin with a leading '/', '.ttf' will be appended to the filename and
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the library will attempt to search for that filename along a
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library-defined font path.
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</para>
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<para>
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The coordinates given by <parameter>x</parameter>,
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<parameter>y</parameter> will define the basepoint of the first
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character (roughly the lower-left corner of the character). This
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is different from the <function>imagestring</function>, where x,
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y define the upper-right corner of the first character.
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</para>
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<para>
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<parameter>angle</parameter> is in degrees, with 0 degrees being
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left-to-right reading text (3 o'clock direction), and higher
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values representing a counter-clockwise rotation. (i.e., a value
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of 90 would result in bottom-to-top reading text).
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</para>
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<para>
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<parameter>fontfile</parameter> is the path to the TrueType font
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you wish to use.
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</para>
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<para>
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<parameter>text</parameter> is the text string which may include
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UTF-8 character sequences (of the form: &#123;) to access
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characters in a font beyond the first 255.
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</para>
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<para>
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<parameter>color</parameter> is the color index. Using the
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negative of a color index has the effect of turning off
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antialiasing.
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</para>
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<para>
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<function>imagettftext</function> returns an array with 8
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elements representing four points making the bounding box of the
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text. The order of the points is lower left, lower right, upper
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right, upper left. The points are relative to the text
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regardless of the angle, so "upper left" means in the top
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left-hand corner when you see the text horizontallty.
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</para>
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<para>
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This example script will produce a black JPEG 400x30 pixels, with
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the words "Testing..." in white in the font Arial.
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<example>
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<title><function>imagettftext</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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header("Content-type: image/jpeg");
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$im = imagecreate(400,30);
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$white = imagecolorallocate($im, 255,255,255);
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$black = imagecolorallocate($im, 0,0,0);
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// Replace path by your own font path
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imagettftext($im, 20, 0, 10, 20, $black, "/path/arial.ttf",
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"Testing... Omega: &#937;");
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imagejpeg($im);
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imagedestroy($im);
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?>
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]]>
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</programlisting>
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</example>
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</para>
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<para>
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This function requires both the GD library and the <ulink
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url="&url.freetype;">FreeType</ulink> library.
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</para>
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<para>
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See also <function>imagettfbbox</function>.
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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