<?php /** * eGroupWare Calendar: rounded corners * * @link http://www.egroupware.org * @author Ralf Becker <RalfBecker-AT-outdoor-training.de> * @package calendar * @copyright (c) 2004-9 by Ralf Becker <RalfBecker-AT-outdoor-training.de> * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License * @version $Id$ */ include_once('../../phpgwapi/inc/common_functions.inc.php'); check_load_extension('gd',true); // true = throw exception if not loadable foreach(array('width'=>-20,'height'=>40,'border'=>1,'color'=>'000080','bgcolor'=>'0000FF') as $name => $default) { $$name = isset($_GET[$name]) ? $_GET[$name] : $default; } $image = @imagecreate(abs($width),abs($height)) or die("Cannot Initialize new GD image stream"); $white = imagecolorallocate($image, 254, 254, 254); imagecolortransparent($image, $white); foreach(array('color','bgcolor') as $name) { preg_match('/^#?([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})([0-9A-Fa-f]{2})$/',$$name,$rgb) or die("Wrong value '".htmlspecialchars($$name)."' for $name, should be something like #80FFFF' !!!"); $$name = imagecolorallocate($image,hexdec($rgb[1]),hexdec($rgb[2]),hexdec($rgb[3])); } $radius = min(abs($width),abs($height)); $center_x = $width > 0 ? abs($width)-$radius-1 : $radius; $center_y = $height < 0 ? abs($height)-$radius-1 : $radius; //echo "width=$width, height=$height => radius=$radius: center_x=$center_x, center_y=$center_y"; if ($border) imagefilledellipse($image,$center_x,$center_y,2*$radius,2*$radius,$color); imagefilledellipse($image,$center_x,$center_y,2*($radius-$border),2*($radius-$border),$bgcolor); if (abs($height) > abs($width)) { if ($height < 0) // lower corners { $y1 = 0; $y2 = abs($height)-$radius-1; } else { $y1 = $radius; $y2 = abs($height)-1; } imagefilledrectangle($image,0,$y1,abs($width),$y2,$bgcolor); if ($border) { $x1 = $width < 0 ? 0 : abs($width)-$border; $x2 = $width < 0 ? $border-1 : abs($width)-1; imagefilledrectangle($image,$x1,$y1,$x2,$y2,$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);