<?php
/*
   ----------------------------------------------------------------
   banner.php

   generates a banner out of random images. 	  
   
   By Craig Eisler 03/24/06
   Updated 7/21/04 to generate image map scripts
   
   You may copy and modify this code, but may not delete the attribution.

   Command line parameters:
   
   width:          width of banner. default is 902. number of images that it takes to fill it is variable depending on height    
   height:         height of images in banner.  default is 90.  banner height is height+extra_height
   extra_height:   extra fill height for banner.  default is 0.  fill color determinted by bg_r, bg_b, bg_b
   image_start:    how far down images start in banner.   default is 0.   used in conjunction with extra_height to allow fill color on either side of image strip.
   bg_r,bg_g,bg_b: R,G,B value of fill color for extra area in banner.  default is white (255,255,255)
   align:          values are center,top,bottom.   this is alignment of banner text.  default is center
   align_adjust:   number of pixels to move text up or down by.  default is zero, values can be positive to move text down or negative to move text up.
   r,g,b:          R,G,B value of color of banner text.  default is is white (255,255,255)
   fontsize:       size of font for banner text
   fontname:       name of font.   must be in /fonts directory and in the form fontname.ttf
   quality:        quality of banner jpg, value 0-100 (higher is better).  default is 90.  
   filename:       filename of banner. default is newlogo.jpg
   
   count:          number of banners to produce.  default is 1.
   
   Current way I call it:
   http://www.blah.com/php/newbanner.php?height=110&extra_height=20&bg_r=128&bg_g=128&bg_b=128&align=bottom&align_adjust=-1&count=400
   It creates the banners in reverse order, so that if your server times out (Yahoo often does), you can just restart setting count at the last logo that was generated
   
   ----------------------------------------------------------------
 */
include 'picture_common.php';


/*
 * MakeThumbnail
 *
 * build a thumbnail of a file with a specified width
 */
function MakeThumbnail( $image_url, $target_height = 65 ) 
{
	
	/*
	 * get the image
	 */
	$original_image = imageCreateFromJPEG($image_url) ;
	$original_width = imagesx( $original_image );
	$original_height = imagesy( $original_image );

	/*
	 * don't scale up!
	 */
	if( $original_height < $target_height )
	{
		return $original_image;
	}
		
	/*
	 * scale down the image
	 */
	$target_width = round( $original_width * $target_height / $original_height ) ; 
	$tmp_image = imageCreateTrueColor( $target_width,$target_height );
		
	imageCopyResampled( $tmp_image, $original_image, 0, 0, 0, 0, $target_width, $target_height, $original_width, $original_height );
		
	imageDestroy( $original_image );

	return $tmp_image;
		
} /* MakeThumbnail */

/*
 * prepare to spew image header
 */

set_time_limit ( 1000 );

reset($HTTP_GET_VARS); 
$align = $HTTP_GET_VARS['align'];
if( $align == "" )
{
	$align = "center";
}

$count = (int) $HTTP_GET_VARS['count'];
$nonumber = 0;
if( $count == 0 )
{
	$count = 1;
	$nonumber = 1;
	header("Content-type: image/jpeg");
}
$align_adjust = (int) $HTTP_GET_VARS['align_adjust'];
$extra_height = (int) $HTTP_GET_VARS['extra_height'];
$image_start = (int) $HTTP_GET_VARS['image_start'];

$height = (int) $HTTP_GET_VARS['height'];
if( $height == 0 )
{
	$height = 90;
}
$width = (int) $HTTP_GET_VARS['width'];
if( $width == 0 )
{
	$width = 902;
}
$filename = $HTTP_GET_VARS['filename'];
if( $filename == "" )
{
	$filename = "newlogo";
}
$quality = (int) $HTTP_GET_VARS['quality'];
if( $quality == 0 )
{
	$quality = 90;
}
$r1 = $HTTP_GET_VARS['r'];
$r = (int) 255;
if( $r1 != "" )
{
	$r = (int) $r1;
}
$g1 = $HTTP_GET_VARS['g'];
$g = (int) 255;
if( $g1 != "" )
{
	$g = (int) $g1;
}
$b1 = $HTTP_GET_VARS['b'];
$b = (int) 255;
if( $b1 != "" )
{
	$b = (int) $b1;
}

$r1 = $HTTP_GET_VARS['bg_r'];
$bg_r = (int) 255;
if( $r1 != "" )
{
	$bg_r = (int) $r1;
}
$g1 = $HTTP_GET_VARS['bg_g'];
$bg_g = (int) 255;
if( $g1 != "" )
{
	$bg_g = (int) $g1;
}
$b1 = $HTTP_GET_VARS['bg_b'];
$bg_b = (int) 255;
if( $b1 != "" )
{
	$bg_b = (int) $b1;
}

$fontsize = (int) $HTTP_GET_VARS['fontsize'];
if( $fontsize == 0 )
{
	$fontsize = 20;
}

$fontname = $HTTP_GET_VARS['fontname'];
if( $fontname == "" )
{
	$fontname = "comic";
}
$font = '/fonts/'  . $fontname . '.ttf';



/* 
 * generate the individual thumbnails
 */
global $szKeyWords;
$file = "http://www.blah.com/picturelist.txt";
$szKeywords =  GetFileData( $file );

while( $count > 0 )
{

    $imagecount = 0;
    $images[0] = NULL;
    $totalwidth = 0;
    $urls[0] = NULL;
    $titles[0] = NULL;
	         
    while( 1 )
    {
       /*
        * find a random directory
        */
    	$cnt = (int) $entries- 1;
    	$index = randNum( 0, $cnt );
    	$a = $szKeywords[$index];
    	$dir = $a[DIRECTORY];
    	$url = $a[URL];
    	$title = $a[TITLE];
    	$path = sprintf( "%s/images", $dir );
    	$urls[$imagecount] = $url . $dir;
    	$titles[$imagecount] = $title;
    
        /* 
         * get a random file from that directory
         */
    	$files = GetDirContents( $path );
    	$numfiles = count( $files );
    	$numfiles = $numfiles-1;
    	$file_index = randNum( 0,$numfiles );
        $url .= $files[$file_index];
    
        /*
         * get a thumbnail of that random file file
         */
         $images[$imagecount] = makeThumbnail($url, $height );
        
        /*
         * once we have enough pixels to make a full image, quit
         */
         $totalwidth += imagesx( $images[$imagecount] );
         $imagecount++;
         if( $totalwidth  >= $width )
         {
         	break;
         }
         if( $imagecount > 99 )  // bug trapper
         {
         	break;
         }
        
    } /* while */
    
    /*
     * create the base image
     */
    $image = imagecreatetruecolor($width, $height+$extra_height);
    $bg_color = imagecolorallocate( $image, $bg_r, $bg_g, $bg_b);
    imagefill($image, 0, 0, $bg_color);
    
    /*
     * compute what we need to trim from each image
     */
    $tmp = $totalwidth-$width;
    $trim = floor( $tmp/$imagecount );
    $trim_left = floor( $trim/2 );
    $trim_right = $trim-$trim_left;

    /*
     * map script for this file
     */
	$mapfile = "map".$count.".js";
	$mf = fopen( $mapfile, "w" );
	$tmp = "map = getMap(document.images.item(\"logoimage\"));\r\n";
	fwrite( $mf, $tmp );

    /*
     * now paste them all together
     */
    $x = 0;
    for( $i=0; $i<$imagecount; $i++ )
    {
    	$im = $images[$i];
    	$im_width = imagesx( $im );
    	//bool imagecopy ( resource dst_im, resource src_im, int dst_x, int dst_y, int src_x, int src_y, int src_w, int src_h )
    	imagecopy( $image, $im, $x, $image_start, $trim_left, 0, $im_width-$trim, $height );
    	imageDestroy( $im );

		$tmp = sprintf( "addArea( map, \"%d,%d,%d,%d\",\"%s\", \"%s\" );\r\n", $x, $image_start, $x+($im_width-$trim), $image_start+$height, $urls[$i], $titles[$i] );
		fwrite( $mf, $tmp );
    
    	$x = $x + $im_width - $trim; 
    	
    } /* for */
    
	$tmp = sprintf( "addArea( map, \"%d,%d,%d,%d\",\"http://www.blah.com\",\"Home\" );\r\n", 0, $image_start+$height, $totalwidth-1, $height+$extra_height-1 );
  	fwrite( $mf, $tmp );
  
    fclose( $mf );
    
    /*
     * add the text
     */
    $text = "ANGUS AND DUNCAN'S EXCELLENT ADVENTURE";
    $text_color = imagecolorallocate( $image, $r, $g, $b);
    
    $bbox = imageftbbox( $fontsize, 0, $font, $text, array("linespacing" => 1) );
    $text_width = abs($bbox[0]) + abs($bbox[2]); // distance from left to right
    $text_height = abs($bbox[1]) + abs($bbox[7]); // distance from top to bottom
    $text_x = floor( ($width - $text_width) / 2 );   
    if( $align == "top" )
    {
    	$text_y = $text_height;
    }
    else if( $align == "bottom" )
    {
    	$text_y = $extra_height+$height-2;
    }
    else
    {
    	$text_y = floor( ($height - $text_height) / 2 + $text_height);
    }
    $text_y += $align_adjust;
    
    imagettftext( $image, $fontsize, 0, $text_x, $text_y, $text_color, $font, $text );
    
    /*
     * write the image
     */
    if( $nonumber )
    {
   	 $filen = $filename . ".jpg";
 	 imagejpeg( $image, "", $quality );
    }
    else
    {
    	$filen = $filename . $count . ".jpg";
    } 
    imagejpeg( $image, $filen, $quality );
    imageDestroy( $image );
    $count = $count-1;
}

echo "DONE - count = $count;";

?>