doc-en/reference/imagick/imagickdraw/setgravity.xml at master · php/doc-en · GitHub

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="imagickdraw.setgravity">
 <refnamediv>
  <refname>ImagickDraw::setGravity</refname>
  <refpurpose>Sets the text placement gravity</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <modifier>public</modifier> <type>bool</type><methodname>ImagickDraw::setGravity</methodname>
   <methodparam><type>int</type><parameter>gravity</parameter></methodparam>
  </methodsynopsis>
  &warn.undocumented.func;
  <para>
   Sets the text placement gravity to use when annotating with text.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>gravity</parameter></term>
     <listitem>
      <para>
       One of the <link linkend="imagick.constants.gravity">GRAVITY</link> constant
       (<literal>imagick::GRAVITY_*</literal>).
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>

 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.void;
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
    <example>
      <title><function>ImagickDraw::setGravity</function> example</title>
      <programlisting role="php">
      <![CDATA[
<?php
function setGravity($fillColor, $strokeColor, $backgroundColor) {

    $draw = new \ImagickDraw();
    $draw->setStrokeColor($strokeColor);
    $draw->setFillColor($fillColor);
    $draw->setStrokeWidth(1);
    $draw->setFontSize(24);

    $gravitySettings = array(
        \Imagick::GRAVITY_NORTHWEST => 'NorthWest',
        \Imagick::GRAVITY_NORTH => 'North',
        \Imagick::GRAVITY_NORTHEAST => 'NorthEast',
        \Imagick::GRAVITY_WEST => 'West',
        \Imagick::GRAVITY_CENTER => 'Centre',
        \Imagick::GRAVITY_SOUTHWEST => 'SouthWest',
        \Imagick::GRAVITY_SOUTH => 'South',
        \Imagick::GRAVITY_SOUTHEAST => 'SouthEast',
        \Imagick::GRAVITY_EAST => 'East'
    );

    $draw->setFont("../fonts/Arial.ttf");

    foreach ($gravitySettings as $type => $description) {
        $draw->setGravity($type);
        $draw->annotation(50, 50, '"' . $description . '"');
    }

    $imagick = new \Imagick();
    $imagick->newImage(500, 500, $backgroundColor);
    $imagick->setImageFormat("png");
    $imagick->drawImage($draw);

    header("Content-Type: image/png");
    echo $imagick->getImageBlob();
}

?>
]]>
      </programlisting>
    </example>
  </para>
 </refsect1>

</refentry>

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