/FuChi/ushahidi/application/controllers/swatch.php

<?php defined('SYSPATH') or die('No direct script access.');
/**
 * Swatch Controller
 *
 * PHP version 5
 * LICENSE: This source file is subject to LGPL license 
 * that is available through the world-wide-web at the following URI:
 * http://www.gnu.org/copyleft/lesser.html
 * @author     Ushahidi Team <team@ushahidi.com> 
 * @package    Ushahidi - http://source.ushahididev.com
 * @module     Swatch Controller  
 * @copyright  Ushahidi - http://www.ushahidi.com
 * @license    http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License (LGPL) 
*/

class Swatch_Controller extends Controller
{
    function index()
    {
        // Image Color
        if (!isset($_GET['c'])) {
            $main_color    = "990000";
        }
        else
        {
            $main_color     = $_GET['c'];
        }
    
        
        // Image Width
        if (!isset($_GET['w']) || !is_numeric($_GET['w'])) {
            $width = "16";
        }
        else
        {
            $width    = $_GET['w'];
        }
    
        // Image Height
        if (!isset($_GET['h']) || !is_numeric($_GET['h'])) {
            $height = "16";
        }
        else
        {
            $height = $_GET['h'];
        }
    
        // Image Border Color
        if (!isset($_GET['b'])) {
            $brdr_color = "990000";
        }
        else
        {
            $brdr_color = $_GET['b'];
        }
        
        // Image Type (Circle or Rectangle?)
        if (!isset($_GET['t']) || ($_GET['t'] != "rec" && $_GET['t'] != "cir") ) {
            $image_type = "rec";
        }
        else
        {
            $image_type    = $_GET['t'];
        }

        $mc_red    =    hexdec(substr($main_color, 0, 2));
        $mc_green  =    hexdec(substr($main_color, 2, 2));
        $mc_blue   =    hexdec(substr($main_color, 4, 2));

        $bc_red    =    hexdec(substr($brdr_color, 0, 2));
        $bc_green  =    hexdec(substr($brdr_color, 2, 2));
        $bc_blue   =    hexdec(substr($brdr_color, 4, 2));
        
        
        if ($image_type == 'rec')
        {
            $image         = imagecreate( $width, $height );
            $main_color    = imagecolorallocate( $image, $mc_red, $mc_green, $mc_blue );
            $brdr_color    = imagecolorallocate( $image, $bc_red, $bc_green, $bc_blue );
            
            imagefill( $image, 0, 0, $brdr_color);
            imagefilledrectangle( $image, 1, 1, ($width-2), ($height-2), $main_color);
        }
        else
        { // Use imagecolorallocatealpha to set transparency level
            
            $a = $width;
            $b = $a*4;
            $c = $b/2;
            $d = $b;
            $e = $d-(2*8);
            
            $image         = imagecreate( $a, $a );
            $image2        = imagecreate( ($b), ($b) );
            $main_color    = imagecolorallocatealpha( $image2, $mc_red, $mc_green, $mc_blue, 20 );
            $brdr_color    = imagecolorallocatealpha( $image2, $bc_red, $bc_green, $bc_blue, 0 );
            $bkg_color     = imagecolorallocatealpha($image2, 0, 0, 0, 127);
            
            imagefill($image2, 0, 0, $bkg_color);
            imagefilledellipse( $image2, $c, $c, $d, $d, $brdr_color);
            imagefilledellipse( $image2, $c, $c, $e, $e, $main_color);
            
            imagecopyresampled($image,$image2,0,0,0,0,$a,$a,$b,$b);
        }
        
        
        header("Content-type: image/png");
        imagepng($image);
        imagedestroy($image);
    }
}