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Force uploaded images to be no greater than a particular size

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#1 usr.c


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Posted 04 May 2007 - 04:36 PM

This is a modification of the modification (how about that) that was originally posted in June 27, 2006 here.
Look in add.php for

//is user allowed to add?

and above that insert

//mod - added on May 4, 2007 in response to user request
//uncomment to use
$resize_orig_threshold = 1024;

Then look for

if($config['debug_mode'] == 1)   echo "Cannot change the mode of file ($path_server)";

and below that insert

//May 4, 2007 -- resize original image to $resize_orig_width x $resize_orig_height if it's bigger than it
                //added in response to user request (...)
                //uncomment the following lines and the ones at the top of the page ($resize_orig_width and $resize_orig_height) to resize all original
                //versions of uploaded pictures
                $arr_correct_dimensions = correctDimensions($uploaded_pwidth, $uploaded_pheight, $resize_orig_threshold); //new in v0.9.4 DEV
                $uploaded_pwidth = $arr_correct_dimensions[0];
                $uploaded_pheight = $arr_correct_dimensions[1];

                $imn = new ImageManipulator($config, $lang);
                $imn -> resizeOriginal($filename,$uploaded_pwidth,$uploaded_pheight,$final_upload_location, $final_upload_location_server,$config,$extension);

Finally, look for

$imn = new ImageManipulator($config, $lang);

and replace it with

//$imn = new ImageManipulator($config, $lang);

Save and close.

Now look in image_man.php for

}//end class

and above that insert

    //resizeOriginal(): resize original if it's bigger than $width x $height (Set in add.php)
    //User request.  Added on June 27, 2006
    function resizeOriginal($filename, $width, $height, $path, $path_server, $config, $type) {
        $path_server = $path_server.$filename;
        $msg = "1"; //initially, assume all is well
        $size = getimagesize($path_server); //get width/height  (path support from PHP 4.05)
        //resize original as normal
        if($type == "jpg" || $type == "jpeg")   $image = @imagecreatefromjpeg($path_server);
        elseif($type == "png")   $image = @imagecreatefrompng($path_server);
        elseif($type == "gif")   $image = @imagecreatefromgif($path_server);
        //resize only if bigger than than the allowed max size
        if($size[0]>$width || $size[1]>$height) {
            //echo "creating image";
            $image_resized = imagecreatetruecolor($width,$height);
            @imagecopyresampled($image_resized, $image, 0, 0, 0, 0, $width, $height, $size[0], $size[1]); //resize and resample image
            // try to save new image
            if($type == "jpg" || $type == "jpeg") {
                if (!@imagejpeg($image_resized, $path_server, 100))   $msg .= $lang['image_man_check'];
            elseif($type == "png") {
                if (!@imagepng($image_resized, $path_server))   $msg .= $lang['image_man_check'];
            elseif($type == "gif") {
                if (!@imagegif($image_resized, $path_server))   $msg .= $lang['image_man_check'];
        return $msg;

Save and close.

Finally, look in functions/f_global.php for (at the very bottom)


and above that insert

// correctDimensions(): maintains the ratio of the width and height args while making sure that the
// returned coords are less than the threshold (new in v0.9.4 DEV, user request: Bruwat)
// if desired, pass in height instead of width and vice versa to enforce a threshold on the height
// change / 2 to control granularity
function correctDimensions($width, $height, $width_threshold) {
    if($width <= $width_threshold || $width_threshold == "")   return array($width, $height);

    $width = ceil($width / 2);
    $height = ceil($height / 2);

    $arr = correctDimensions($width, $height, $width_threshold);
    return $arr;

Do a search for correctDimensions first since you may already have it, in which case you don't need to add it again.

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