function GenerateThumbFile($from_name, $to_name, $n_wid, $n_hgt)
{
$max_x = $n_wid;
$max_y = $n_hgt;
$cut_x = 0;
$cut_y = 0;
$save_to_file = true;
$image_type = -1;
$quality = 100;
// if src is URL then download file first
$temp = false;
if (substr($from_name, 0, 7) == 'http://') {
$tmpfname = tempnam("tmp/", "TmP-");
$temp = @fopen($tmpfname, "w");
if ($temp) {
@fwrite($temp, @file_get_contents($from_name)) or die("Cannot download image");
@fclose($temp);
$from_name = $tmpfname;
} else {
die("Cannot create temp file");
}
}
// check if file exists
if (!file_exists($from_name)) {
die("Source image does not exist!");
}
// get source image size (width/height/type)
// orig_img_type 1 = GIF, 2 = JPG, 3 = PNG
list($orig_x, $orig_y, $orig_img_type, $img_sizes) = @GetImageSize($from_name);
// cut image if specified by user
if ($cut_x > 0) {
$orig_x = min($cut_x, $orig_x);
}
if ($cut_y > 0) {
$orig_y = min($cut_y, $orig_y);
}
// should we override thumb image type?
$image_type = $image_type != -1 ? $image_type : $orig_img_type;
// check for allowed image types
if ($orig_img_type < 1 or $orig_img_type > 3) {
die("Image type not supported");
}
if ($orig_x > $max_x or $orig_y > $max_y) {
// resize
$per_x = $orig_x / $max_x;
$per_y = $orig_y / $max_y;
if ($per_y > $per_x) {
$max_x = $orig_x / $per_y;
} else {
$max_y = $orig_y / $per_x;
}
} else {
// keep original sizes, i.e. just copy
if ($save_to_file) {
@copy($from_name, $to_name);
} else {
switch ($image_type) {
case 1:
header("Content-type: image/gif");
readfile($from_name);
break;
case 2:
header("Content-type: image/jpeg");
readfile($from_name);
break;
case 3:
header("Content-type: image/png");
readfile($from_name);
break;
}
}
return;
}
if ($image_type == 1) {
// should use this function for gifs (gifs are palette images)
$ni = imagecreate($max_x, $max_y);
} else {
// Create a new true color image
$ni = ImageCreateTrueColor($max_x, $max_y);
}
// Fill image with white background (255,255,255)
$white = imagecolorallocate($ni, 255, 255, 255);
imagefilledrectangle($ni, 0, 0, $max_x, $max_y, $white);
// Create a new image from source file
$im = ImageCreateFromType($orig_img_type, $from_name);
// Copy the palette from one image to another
imagepalettecopy($ni, $im);
// Copy and resize part of an image with resampling
imagecopyresampled($ni, $im, 0, 0, 0, 0, $max_x, $max_y, $orig_x, $orig_y);
// srcW, srcH
// save thumb file
SaveImage($ni, $to_name, $image_type, $save_to_file, $quality);
if ($temp) {
unlink($tmpfname);
// this removes the file
}
}
function GenerateThumbFile($from_name, $to_name, $max_x, $max_y)
{
global $save_to_file, $image_type, $image_quality;
$image_flag = 0;
$resize_flag = 0;
// get source image size (width/height/type)
// orig_img_type 1 = GIF, 2 = JPG, 3 = PNG
list($orig_x, $orig_y, $orig_img_type, $img_sizes) = GetImageSize($from_name);
/*echo "original x =".$orig_x."<br>";
echo "original y =".$orig_y."<br>";
echo "image sizes =".$img_sizes."<br>";
echo "max x =".$max_x."<br>";
echo "max y =".$max_y."<br>";
exit;*/
//$a = GetImageSize($from_name);
// should we override thumb image type?
$image_type = $image_type != -1 ? $image_type : $orig_img_type;
// check for allowed image types
// if ($orig_img_type < 1 or $orig_img_type > 3) die("Image type not supported");
if ($orig_x < $max_x and $orig_y < $max_y) {
$resize_flag = 1;
//header('Location:'.$_SERVER['HTTP_REFERER']);
// exit;
//return $resize_flag;
}
if ($resize_flag != 1) {
if ($orig_x > $max_x or $orig_y > $max_y) {
/*-------if original image size is less than the specified size to resize no need to resize------------- */
/*$per_x = $orig_x / $max_x;
$per_y = $orig_y / $max_y;
if ($per_y > $per_x)
{
$max_x = $orig_x / $per_y;
}
else
{
$max_y = $orig_y / $per_x;
}*/
} else {
// keep original sizes, i.e. just copy
if ($save_to_file) {
@copy($from_name, $to_name);
// echo "testing";
//exit;
} else {
switch ($image_type) {
case 1:
header("Content-type: image/gif");
include $from_name;
break;
case 2:
header("Content-type: image/jpeg");
include $from_name;
break;
case 3:
header("Content-type: image/png");
include $from_name;
break;
}
}
return;
}
//if($resize_flag == 0)
//{
if ($image_type == 1) {
// should use this function for gifs (gifs are palette images)
$ni = imagecreate($max_x, $max_y);
//echo "1ni=".$ni;
//exit;
} else {
// Create a new true color image
$ni = ImageCreateTrueColor($max_x, $max_y);
//echo "2ni=".$ni;
//exit;
}
// Fill image with white background (255,255,255)
$white = imagecolorallocate($ni, 255, 255, 255);
imagefilledrectangle($ni, 0, 0, $max_x, $max_y, $white);
// Create a new image from source file
$im = ImageCreateFromType($orig_img_type, $from_name);
if (!$im) {
$image_flag = 1;
} else {
//imagepng($im);
// Copy the palette from one image to another
imagepalettecopy($ni, $im);
// Copy and resize part of an image with resampling
imagecopyresampled($ni, $im, 0, 0, 0, 0, $max_x, $max_y, $orig_x, $orig_y);
// srcW, srcH
// save thumb file
SaveImage($image_type, $ni, $to_name, $image_quality, $save_to_file);
// }
}
}
return $image_flag;
}
