$max_height) {
$height = $max_height;
}
imagecopyresampled($thumbnail,$img,0,0,0,0,$thumb_width,$thumb_height,$width,$height);
return $thumbnail;
}
// sends the thumbnail back to browser. if the thumbnail does not already exist,
// it is generated. if $save is set to 'true', the image is cached
function thumb_print($dir,$file_thumb,$save,$mdir,$thumb_width,$thumb_height)
{
// if thumbnail does not exist already, create it
if (!(file_exists($mdir.$file_thumb))) {
list($width,$height,$pictype) = getimagesize($dir.$file_thumb);
switch ($pictype) {
case 1 : $img = imagecreatefromgif($dir.$file_thumb); break;
case 2 : $img = imagecreatefromjpeg($dir.$file_thumb); break;
case 3 : $img = imagecreatefrompng($dir.$file_thumb); break;
}
if ($img) {
$thumbnail = thumb_create($img,$width,$height,$thumb_width,$thumb_height);
if ($save) {
switch ($pictype) {
case 1 : imagegif($thumbnail,$mdir.$file_thumb); break;
case 2 : imagejpeg($thumbnail,$mdir.$file_thumb); break;
case 3 : imagepng($thumbnail,$mdir.$file_thumb); break;
}
}
switch ($pictype) {
case 1 : imagegif($thumbnail); break;
case 2 : imagejpeg($thumbnail); break;
case 3 : imagepng($thumbnail); break;
}
}
} else {
// thumbnail file already exists, return it to browser
list(,,$pictype) = getimagesize($mdir.$file_thumb);
switch ($pictype) {
case 1 : $img = imagecreatefromgif($mdir.$file_thumb); break;
case 2 : $img = imagecreatefromjpeg($mdir.$file_thumb); break;
case 3 : $img = imagecreatefrompng($mdir.$file_thumb); break;
}
switch ($pictype) {
case 1 : imagegif($img); break;
case 2 : imagejpeg($img); break;
case 3 : imagepng($img); break;
}
}
}
// read the list of image files in the specified directory
function read_data($data_dir,$ext)
{
$dir_handle = @opendir($data_dir);
if ($dir_handle) {
while ($file = readdir($dir_handle)) {
if (eregi($ext,$file)) {
$files[] = $file;
}
}
closedir($dir_handle);
}
if (gettype($files) == "array") {
sort($files);
} else {
$files = false;
}
return $files;
}
// prints out the HTML for the index page. thumbnail images are calls to self
// with cmd=min
function index_print($dir,$ext,$template,$cols,$maxperpage,$start,$w,$h)
{
$lines = file($template);
$line = implode("",$lines);
$selflink = $GLOBALS["PHP_SELF"];
$images = read_data($dir,$ext);
if ($images) {
$table = $GLOBALS["infocaption"]."
\r\n";
$max = count($images)-1;
$end = $start+$maxperpage-1;
$counter = 0;
while (list($key,$image) = each($images)) {
if (($key >= $start) && ($key <= $end)) {
$piclink = $PHP_SELF."?cmd=min&pic=".$image;
if ($f) {$piclink .= "&f=1"; }
$biglink = $PHP_SELF."?cmd=max&start=".$start."&pic=".$image;
$table .= "![](\"$piclink\") | ";
$counter++;
if (((($counter) % $cols) == 0) && ($key < $end)) {
$table .= "
";
}
}
}
$table .= "
";
// print the page numbers at the bottom
for ($i = 0; $i < sizeof($images)/$maxperpage; $i++) {
$page = $i + 1;
$nstart = $i * $maxperpage;
// if current page, then no need to put
if ($nstart == $start) {
$table .= "Page $page - ";
} else {
$table .= "Page $page - ";
}
}
} else {
$table = "No files in $dir";
}
$line = str_replace("###pictable###",$table,$line);
return $line;
}
// prints the HTML for full size image page with appropriate links
function image_print($dir,$pic,$template,$start,$ext)
{
// find the next and previous images
$image_arr = read_data($dir,$ext);
$prev = "?cmd=max&start=$start&pic=";
$next = "?cmd=max&start=$start&pic=";
for ($i = 0; $i < sizeof($image_arr); $i++) {
if ($image_arr[$i] == $pic) {
if ($i == 0) {
$prev = "";
} else {
$prev .= $image_arr[$i-1];
}
if ($i == (sizeof($image_arr)-1)) {
$next = "";
} else {
$next .= $image_arr[$i+1];
}
break;
}
}
// print out the HTML
$lines = file($template);
$line = implode("",$lines);
$selflink = $GLOBALS["PHP_SELF"];
list(,,,$sizestr) = getimagesize($pic);
// patch work to make background gray
$piclink = "";
$piclink .= "[ previous | ";
$piclink .= "index";
$piclink .= " | next ]
";
$src=$dir.$pic;
$piclink .= "![](\"$src\")
";
$line = str_replace("###pictable###",$piclink,$line);
return $line;
}
// routes commands based on the 'cmd' parameter
// min - returns a thumbnail
// max - returns the full size image
// prints the index otherwise (default)
function main($cmd,$dir,$pic,$template,$cols,$save,$mdir,$w,$h,$maxperpage,$start,$ext=".jpg")
{
switch ($cmd) {
case "min" :
thumb_print($dir,$pic,$save,$mdir,$w,$h);
break;
case "max" :
echo image_print($dir,$pic,$template,$start,$ext);
break;
default :
echo "Sumit Birla: Photo Album: ";
echo $GLOBALS["REQUEST_URI"]."";
// you may comment out the includes. this works only for my setup
include("../../header.inc");
echo index_print($dir,$ext,$template,$cols,$maxperpage,$start,$w,$h);
include("../../footer.inc");
}
}
main($cmd,$img_dir,$pic,$templatefile,$columns,$save,$thumbs_dir,$thumb_width,$thumb_height,$maxperpage,$start,$ext_pattern);
?>