crop.php

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<?php
$guid = get_input('guid');
$owner = get_entity($guid);

if (!$owner || !($owner instanceof ElggUser) || !$owner->canEdit()) {
    register_error(elgg_echo('avatar:crop:fail'));
    forward(REFERER);
}

$x1 = (int) get_input('x1', 0);
$y1 = (int) get_input('y1', 0);
$x2 = (int) get_input('x2', 0);
$y2 = (int) get_input('y2', 0);

$filehandler = new ElggFile();
$filehandler->owner_guid = $owner->getGUID();
$filehandler->setFilename("profile/" . $owner->guid . "master" . ".jpg");
$filename = $filehandler->getFilenameOnFilestore();

// ensuring the avatar image exists in the first place
if (!file_exists($filename)) {
    register_error(elgg_echo('avatar:crop:fail'));
    forward(REFERER);
}

$icon_sizes = elgg_get_config('icon_sizes');
unset($icon_sizes['master']);

// get the images and save their file handlers into an array
// so we can do clean up if one fails.
$files = array();
foreach ($icon_sizes as $name => $size_info) {
    $resized = get_resized_image_from_existing_file($filename, $size_info['w'], $size_info['h'], $size_info['square'], $x1, $y1, $x2, $y2, $size_info['upscale']);

    if ($resized) {
        //@todo Make these actual entities.  See exts #348.
        $file = new ElggFile();
        $file->owner_guid = $guid;
        $file->setFilename("profile/{$guid}{$name}.jpg");
        $file->open('write');
        $file->write($resized);
        $file->close();
        $files[] = $file;
    } else {
        // cleanup on fail
        foreach ($files as $file) {
            $file->delete();
        }

        register_error(elgg_echo('avatar:resize:fail'));
        forward(REFERER);
    }
}

$owner->icontime = time();

$owner->x1 = $x1;
$owner->x2 = $x2;
$owner->y1 = $y1;
$owner->y2 = $y2;

system_message(elgg_echo('avatar:crop:success'));
$view = 'river/user/default/profileiconupdate';
elgg_delete_river(array('subject_guid' => $owner->guid, 'view' => $view));
elgg_create_river_item(array(
    'view' => $view,
    'action_type' => 'update',
    'subject_guid' => $owner->guid,
    'object_guid' => $owner->guid,
));


forward(REFERER);