<?php /* -*- C++ -*- */

/* $Id: thumbnail.php,v 1.1 2001/11/01 06:50:05 asleep Exp $ */

/*
 * Creates thumbnail of images by mike@filespanker.com (Image thumbnail0r)
 */

/* use: thumbnail.php?img=images/mypic.png?w=30&h=30&mode=0 */

//require_once 'config.php';
$relative_root='';
if ($browse) {
  $img = $relative_root.$img;
}
else {
  $img = $relative_root.$img;
}

if (!isset($w)) {
  $w = $thumb_w;
}

if (!isset($h)) {
  $h = $thumb_h;
}

SetType($mode, 'integer'); 
SetType($w, 'integer'); 
SetType($h, 'integer'); 
SetType($img, 'string' ); 

function percent($p, $w) 
{
  return (real)(100 * ($p / $w)); 
}

function unpercent($percent, $whole) 
{
  return (real)(($percent * $whole) / 100);
}

// Initialization 

// Make sure the file exists... 
if (!file_exists($img)) {
  echo "Error: could not find file: $img.";
  exit();
}

// If the user defined a type to use. 
if (!isset($type)) {
  $ext = explode('.', $img); 
  $ext = $ext[count($ext)-1]; 
  switch(strtolower($ext)) {
    case 'jpeg'  :  
      $type = 'jpg'; 
      break; 
  default : 
    $type = $ext; 
    break; 
  } 
} 

// Create the image... 
switch (strtolower($type)) {
 case 'jpg': 
   $tmp = imagecreatefromjpeg($img);    
   break; 
 case 'gif': 
   $tmp = @imagecreatefromgif($img);    
   break; 
 case 'png': 
   $tmp = @imagecreatefrompng($img);    
   break; 
 default: 
   echo 'Error: Unrecognized image format.'; 
   exit(); 
   break; 
} 

if ($tmp) {
  // Resize it 
     
  $ow  = imagesx ($tmp);    // Original image width 
  $oh  = imagesy ($tmp);    // Original image height 

  if ($mode) {
    // Just smash it up to fit the dimensions 
    $nw = $w; 
    $nh = $h; 
  } 
  else {
    // Make it proportional. 
    if ($ow > $oh) {
      $nw  = $w; 
      $nh = unpercent(percent($nw, $ow), $oh);         
    } 
    else if ($oh > $ow) {
      $nh = $h; 
      $nw = unpercent(percent($nh, $oh), $ow); 
    } 
    else {
      $nh = $h; 
      $nw = $w; 
    } 
  } 

  $out = imagecreatetruecolor($nw, $nh); 
  imagecopyresampled($out, $tmp, 0, 0, 0, 0, $nw, $nh, $ow, $oh); 
  imagedestroy($tmp); 
} 
else {
  echo 'Could not create image resource.'; 
  exit; 
} 

if ($out) {
  switch (strtolower($type)) {
  case 'jpg': 
    header('Content-type: image/jpeg'); 
    imagejpeg($out); 
    break;
  case 'gif': 
    header('Content-type: image/gif'); 
    imagegif($out); 
    break;
  case 'png': 
    header('Content-type: image/png'); 
    imagepng($out); 
    break; 
  } 
  imagedestroy($out); 
} 
else {
  echo 'ERROR: Could not create resized image.'; 
}
?>