mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-11-16 21:13:23 +01:00
85 lines
2.5 KiB
PHP
85 lines
2.5 KiB
PHP
|
<?php
|
||
|
|
/**************************************************************************\
|
||
|
|
* eGroupWare - calendar: rounded corners *
|
||
|
|
* http://www.egroupware.org *
|
||
|
|
* Written by RalfBecker@outdoor-training.de *
|
||
|
|
* -------------------------------------------- *
|
||
|
|
* This program is free software; you can redistribute it and/or modify it *
|
||
|
|
* under the terms of the GNU General Public License as published by the *
|
||
|
|
* Free Software Foundation; either version 2 of the License, or (at your *
|
||
|
|
* option) any later version. *
|
||
|
|
\**************************************************************************/
|
||
|
|
|
||
|
|
/* $Id$ */
|
||
|
|
|
||
|
|
// some constanst for pre php4.3
|
||
|
|
if (!defined('PHP_SHLIB_SUFFIX'))
|
||
|
|
{
|
||
|
|
define('PHP_SHLIB_SUFFIX',strtoupper(substr(PHP_OS, 0,3)) == 'WIN' ? 'dll' : 'so');
|
||
|
|
}
|
||
|
|
if (!defined('PHP_SHLIB_PREFIX'))
|
||
|
|
{
|
||
|
|
define('PHP_SHLIB_PREFIX',PHP_SHLIB_SUFFIX == 'dll' ? 'php_' : '');
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!extension_loaded('gd') && !@dl(PHP_SHLIB_PREFIX.'gd.'.PHP_SHLIB_SUFFIX))
|
||
|
|
{
|
||
|
|
die("Can't load the needed php-extension 'gd' !!!");
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach(array('width'=>1,'height'=>1,'color1'=>'000080','color2'=>'ffffff') as $name => $default)
|
||
|
|
{
|
||
|
|
$$name = isset($_GET[$name]) ? $_GET[$name] : $default;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach(array('color1','color2') as $name)
|
||
|
|
{
|
||
|
|
preg_match('/^#?([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})$/',$$name,$rgb) or
|
||
|
|
die("Wrong value '".$$name."' for $name, should be something like #80FFFF' !!!");
|
||
|
|
|
||
|
|
$$name = array('r'=>hexdec($rgb[1]),'g'=>hexdec($rgb[2]),'b'=>hexdec($rgb[3]));
|
||
|
|
}
|
||
|
|
$image = @imagecreate(abs($width),abs($height))
|
||
|
|
or die("Cannot Initialize new GD image stream");
|
||
|
|
|
||
|
|
$length = max($width,$height);
|
||
|
|
$dist = $length / 256;
|
||
|
|
if ($dist < 1) $dist = 1;
|
||
|
|
$anz = round($length / $dist);
|
||
|
|
foreach ($color1 as $c => $val)
|
||
|
|
{
|
||
|
|
$c_step[$c] = ($color2[$c] - $val) / $anz;
|
||
|
|
}
|
||
|
|
|
||
|
|
$rgb = $color1;
|
||
|
|
for ($l = 0; $l < $length; $l += $dist)
|
||
|
|
{
|
||
|
|
$color = imagecolorallocate($image,(int)$rgb['r'],(int)$rgb['g'],(int)$rgb['b']);
|
||
|
|
foreach($rgb as $c => $val)
|
||
|
|
{
|
||
|
|
$rgb[$c] += $c_step[$c];
|
||
|
|
}
|
||
|
|
if ($width > $height)
|
||
|
|
{
|
||
|
|
imagefilledrectangle($image,(int)$l,0,(int) ($l+$dist),$height-1,$color);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
imagefilledrectangle($image,0,(int)$l,$width-1,(int) ($l+$dist),$color);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
session_cache_limiter('public'); // allow caching
|
||
|
|
if (function_exists('imagegif'))
|
||
|
|
{
|
||
|
|
header("Content-type: image/gif");
|
||
|
|
imagegif($image);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
header("Content-type: image/png");
|
||
|
|
imagepng($image);
|
||
|
|
}
|
||
|
|
imagedestroy($image);
|
||
|
|
?>
|