module_icon.php

<?php
# import from GIJOE's pico
# $Id: module_icon.php,v 1.2 2008/02/03 15:28:51 nobu Exp $

define( 'ICON_ASIS', 'module_icon.png' );
define( 'ICON_IMAGE', 'images/eguide_slogo2.png' );

$mydirpath        = __DIR__;
$mydirname        = basename( $mydirpath );
$icon_cache_limit = 3600; // default 3600sec == 1hour

session_cache_limiter( 'public' );
header( "Expires: " . date( 'r', (int) ( time() / $icon_cache_limit ) * $icon_cache_limit + $icon_cache_limit ) );

header( "Cache-Control: public, max-age=$icon_cache_limit" );
header( "Last-Modified: " . date( 'r', (int) ( time() / $icon_cache_limit ) * $icon_cache_limit ) );
header( "Content-type: image/png" );

if ( file_exists( $mydirpath . '/module_icon.png' ) ) {
	$use_custom_icon = true;
	$icon_fullpath   = $mydirpath . '/' . ICON_TEMPLATE;
} else {
	$use_custom_icon = false;
	$icon_fullpath   = $mydirpath . '/' . ICON_IMAGE;
}

if ( ! $use_custom_icon && function_exists( 'imagecreatefrompng' ) && function_exists( 'imagecolorallocate' ) && function_exists( 'imagestring' ) && function_exists( 'imagepng' ) ) {
	$im = imagecreatefrompng( $icon_fullpath );

	$color = imagecolorallocate( $im, 0, 0, 0 ); // black
	$px    = ( 92 - 6 * strlen( $mydirname ) ) / 2;
	$bg    = imagecolorat( $im, $px, 34 );
	imagefilledrectangle( $im, 3, 34, 84, 47, $bg );
	imagestring( $im, 3, $px, 34, $mydirname, $color );
	imagepng( $im );
	imagedestroy( $im );

} else {

	readfile( $icon_fullpath );

}