function emarking_create_anonymous_page_from_storedfile(stored_file $file, $student)
{
if (!$file) {
throw new Exception('Stored file does not exist');
}
// Get file storage and copy file to temp folder.
$fs = get_file_storage();
$tmppath = $file->copy_content_to_temp('emarking', 'anonymous');
// Treat the file as an image, get its size and draw a white rectangle.
$size = getimagesize($tmppath, $info);
$imagemime = exif_imagetype($tmppath);
if ($imagemime == IMAGETYPE_PNG) {
$image = imagecreatefrompng($tmppath);
} elseif ($imagemime == IMAGETYPE_JPEG) {
$image = imagecreatefromjpeg($tmppath);
} else {
throw new Exception('Unsupported file type for pages');
}
if (!$image) {
throw new Exception('Could not read image from ' . $info[0] . ' ' . $tmppath);
}
$white = imagecolorallocate($image, 255, 255, 255);
$y2 = round($size[1] / 10, 0);
imagefilledrectangle($image, 0, 0, $size[0], $y2, $white);
// Save the new image to replace the file.
if ($imagemime == IMAGETYPE_PNG) {
if (!imagepng($image, $tmppath)) {
throw new Exception('Could not save image as PNG to ' . $tmppath);
}
} elseif ($imagemime == IMAGETYPE_JPEG) {
if (!imagejpeg($image, $tmppath, 100)) {
throw new Exception('Could not save image as JPEG to ' . $tmppath);
}
} else {
throw new Exception('Unsupported file type for saving page');
}
clearstatcache();
$filenameanonymous = emarking_get_anonymous_filename($file->get_filename());
// Copy file from temp folder to Moodle's filesystem.
$filerecordanonymous = array('contextid' => $file->get_contextid(), 'component' => 'mod_emarking', 'filearea' => 'pages', 'itemid' => $file->get_itemid(), 'filepath' => '/', 'filename' => $filenameanonymous, 'timecreated' => $file->get_timecreated(), 'timemodified' => time(), 'userid' => $student->id, 'author' => $student->firstname . ' ' . $student->lastname, 'license' => 'allrightsreserved');
$previousfile = $fs->get_file($file->get_contextid(), 'mod_emarking', 'pages', $file->get_itemid(), '/', $filenameanonymous);
if ($previousfile) {
$previousfile->delete();
}
$fileinfo = $fs->create_file_from_pathname($filerecordanonymous, $tmppath);
if (!$fileinfo) {
throw new Exception('Could not create anonymous version of a stored file');
}
return $fileinfo;
}
$PAGE->requires->jquery_plugin('ui-css');
// Save uploaded file in Moodle filesystem and check.
$fs = get_file_storage();
if ($action === 'delete') {
require_capability('mod/emarking:uploadexam', $context);
$d = $_POST['d'];
if (!is_array($d)) {
print_error('Invalid parameters');
}
foreach ($d as $fileidtodelete) {
if (!is_number($fileidtodelete)) {
continue;
}
$filetodelete = $fs->get_file_by_id($fileidtodelete);
// Calculate anonymous file name from original file name.
$anonymousfilename = emarking_get_anonymous_filename($filetodelete->get_filename());
$filetodelete->delete();
$anonymousfile = $fs->get_file($context->id, 'mod_emarking', 'orphanpages', $emarking->id, '/', $anonymousfilename);
if ($anonymousfile) {
$anonymousfile->delete();
}
}
redirect($url, get_string('transactionsuccessfull', 'mod_emarking'), 3);
die;
}
if ($action === 'rotate') {
require_capability('mod/emarking:uploadexam', $context);
$fileidtorotate = required_param('file', PARAM_INT);
$newpath = emarking_rotate_image_file($fileidtorotate);
redirect($url, get_string('transactionsuccessfull', 'mod_emarking'), 3);
die;
function emarking_create_anonymous_page_from_storedfile(stored_file $file)
{
if (!$file) {
throw new Exception('Stored file does not exist');
}
// Get file storage and copy file to temp folder.
$fs = get_file_storage();
$tmppath = $file->copy_content_to_temp('emarking', 'anonymous');
// Treat the file as an image, get its size and draw a white rectangle.
$size = getimagesize($tmppath);
$image = imagecreatefrompng($tmppath);
$white = imagecolorallocate($image, 255, 255, 255);
$y2 = round($size[1] / 10, 0);
imagefilledrectangle($image, 0, 0, $size[0], $y2, $white);
// Save the new image to replace the file.
if (!imagepng($image, $tmppath)) {
return false;
}
clearstatcache();
$filenameanonymous = emarking_get_anonymous_filename($file->get_filename());
// Copy file from temp folder to Moodle's filesystem.
$filerecordanonymous = array('contextid' => $file->get_contextid(), 'component' => 'mod_emarking', 'filearea' => 'pages', 'itemid' => $file->get_itemid(), 'filepath' => '/', 'filename' => $filenameanonymous, 'timecreated' => $file->get_timecreated(), 'timemodified' => time(), 'userid' => $file->get_userid(), 'author' => $file->get_author(), 'license' => 'allrightsreserved');
$previousfile = $fs->get_file($file->get_contextid(), 'mod_emarking', 'pages', $file->get_itemid(), '/', $filenameanonymous);
if ($previousfile) {
$previousfile->delete();
}
$fileinfo = $fs->create_file_from_pathname($filerecordanonymous, $tmppath);
return $fileinfo;
}
