Joomla 3 Component - Upload Image and Convert with Imagick - php

Question

I am currently creating a component, where a user creates a new image and there's an upload button and a name input, all the basic gallery fields for an Image..
But I have come across two issues, the one is how would i write the following code so that it exports one image b/w and the other color scaled to amax width of 160, Here's the code I have:
function save(){
if(!defined('DS')) define('DS', DIRECTORY_SEPARATOR);
$input=JFactory::getApplication()->input;
$input->get('jform', NULL, NULL);
$file = JRequest::getVar('jform', null, 'files', 'array');
$data = JRequest::getVar( 'jform', null, 'post', 'array' );
$path = JPATH_ROOT;
//
//
// Make the file name safe.
jimport('joomla.filesystem.file');
$file['name']['logo'] = JFile::makeSafe($file['name']['logo']);
// Move the uploaded file into a permanent location.
if (isset($file['name']['logo'])) {
// Make sure that the full file path is safe.
$filepath = JPath::clean($path. DS ."images". DS ."associations". DS . strtolower($file['name']['logo']));
// Move the uploaded file.
JFile::upload( $file['tmp_name']['logo'], $filepath );
$data['logo'] = strtolower( $file['name']['logo'] );
//convert image
$image = $filepath;
$im = new Imagick();
$im->pingImage($image);
$im->readImage( $image );
$im->setImageResolution(72,72);
$im->resampleImage(72,72,imagick::FILTER_UNDEFINED,1);
$im->scaleImage(160,0);
$im->setImageFormat('jpeg');
$im->setImageCompression(imagick::COMPRESSION_JPEG);
$im->setImageCompressionQuality(60);
$im->modulateImage(100, 0, 100);
$im->writeImage($image);
$im->destroy();
}
$input->post->set('jform',$data);
return parent::save();
}
And Finally, How Would I manage this? it saves the image name in the database but once i return to this item it just has an upload field, where it would be rather useful to have the image name or the actual image with a delete function showing and a reupload...
Am I going the right way about this?... Any Help Greatly Appreciated... Thank you :)

Answer 1

How to produce 2 images
You have to create 2 resources out from the uploaded original, transform each and save in the separate file. For example I'be using the JImage package (note there's no limitcolors filter available)
$image_one = new JImage($filepath);
$image_one
->filter('grayscale')
->toFile($path_one, IMAGETYPE_JPEG, array('quality' => 60));
$image_two = new JImage($filePath);
$image_two
->filter('limitcolors', array('limit' => 160))
->toFile($path_two, IMAGETYPE_GIF);
Managing images
Depends on the reason, why there"s functionality being implemented and so relation of the uploaded image to other objects/ events.
If the uploaded images are used for user profiles, you should store a user id in the database along with image location. Next time check if current users has any images related to his/ her account and display.