forked from extern/egroupware
89 lines
2.9 KiB
PHP
89 lines
2.9 KiB
PHP
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<?php
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/**************************************************************************\
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* eGroupWare - calendar: rounded corners *
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* http://www.egroupware.org *
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* Written by RalfBecker@outdoor-training.de *
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* -------------------------------------------- *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU General Public License as published by the *
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* Free Software Foundation; either version 2 of the License, or (at your *
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* option) any later version. *
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\**************************************************************************/
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/* $Id$ */
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// some constanst for pre php4.3
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if (!defined('PHP_SHLIB_SUFFIX'))
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{
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define('PHP_SHLIB_SUFFIX',strtoupper(substr(PHP_OS, 0,3)) == 'WIN' ? 'dll' : 'so');
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}
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if (!defined('PHP_SHLIB_PREFIX'))
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{
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define('PHP_SHLIB_PREFIX',PHP_SHLIB_SUFFIX == 'dll' ? 'php_' : '');
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}
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if (!extension_loaded('gd') && !@dl(PHP_SHLIB_PREFIX.'gd.'.PHP_SHLIB_SUFFIX))
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{
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die("Can't load the needed php-extension 'gd' !!!");
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}
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foreach(array('width'=>-20,'height'=>40,'border'=>1,'color'=>'000080','bgcolor'=>'0000FF') as $name => $default)
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{
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$$name = isset($_GET[$name]) ? $_GET[$name] : $default;
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}
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$image = @imagecreate(abs($width),abs($height))
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or die("Cannot Initialize new GD image stream");
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$white = imagecolorallocate($image, 254, 254, 254);
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imagecolortransparent($image, $white);
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foreach(array('color','bgcolor') as $name)
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{
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preg_match('/^#?([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})$/',$$name,$rgb) or
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die("Wrong value '".$$name."' for $name, should be something like #80FFFF' !!!");
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$$name = imagecolorallocate($image,hexdec($rgb[1]),hexdec($rgb[2]),hexdec($rgb[3]));
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}
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$radius = min(abs($width),abs($height));
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$center_x = $width > 0 ? abs($width)-$radius-1 : $radius;
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$center_y = $height < 0 ? abs($height)-$radius-1 : $radius;
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//echo "width=$width, height=$height => radius=$radius: center_x=$center_x, center_y=$center_y";
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if ($border) imagefilledellipse($image,$center_x,$center_y,2*$radius,2*$radius,$color);
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imagefilledellipse($image,$center_x,$center_y,2*($radius-$border),2*($radius-$border),$bgcolor);
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if (abs($height) > abs($width))
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{
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if ($height < 0) // lower corners
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{
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$y1 = 0;
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$y2 = abs($height)-$radius-1;
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}
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else
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{
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$y1 = $radius;
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$y2 = abs($height)-1;
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}
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imagefilledrectangle($image,0,$y1,abs($width),$y2,$bgcolor);
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if ($border)
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{
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$x1 = $width < 0 ? 0 : abs($width)-$border;
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$x2 = $width < 0 ? $border-1 : abs($width)-1;
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imagefilledrectangle($image,$x1,$y1,$x2,$y2,$color);
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}
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}
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session_cache_limiter('public'); // allow caching
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if (function_exists('imagegif'))
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{
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header("Content-type: image/gif");
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imagegif($image);
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}
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else
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{
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header("Content-type: image/png");
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imagepng($image);
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}
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imagedestroy($image);
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?>
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