/**
* Generate a new PDF with the original submission + annotations
* @param $submissionid
* @return bool - true if successful
*/
public function create_response_pdf($submissionid)
{
global $DB;
$context = $this->assignment->get_context();
$fs = get_file_storage();
$file = $fs->get_file($context->id, 'assignsubmission_pdf', ASSIGNSUBMISSION_PDF_FA_FINAL, $submissionid, $this->get_subfolder(), ASSIGNSUBMISSION_PDF_FILENAME);
if (!$file) {
throw new moodle_exception('errornosubmission2', 'assignfeedback_pdf');
}
$temparea = $this->get_temp_folder($submissionid) . 'sub';
if (!file_exists($temparea)) {
if (!mkdir($temparea, 0777, true)) {
throw new moodle_exception('errortempfolder', 'assignfeedback_pdf');
}
}
$sourcefile = $temparea . '/submission.pdf';
$destfile = $temparea . '/response.pdf';
$file->copy_content_to($sourcefile);
$mypdf = new AssignPDFLib();
$mypdf->load_pdf($sourcefile);
$comments = $DB->get_records('assignfeedback_pdf_cmnt', array('submissionid' => $submissionid), 'pageno');
$annotations = $DB->get_records('assignfeedback_pdf_annot', array('submissionid' => $submissionid), 'pageno');
if ($comments) {
$comment = current($comments);
} else {
$comment = false;
}
if ($annotations) {
$annotation = current($annotations);
} else {
$annotation = false;
}
while (true) {
if ($comment) {
$nextpage = $comment->pageno;
if ($annotation) {
if ($annotation->pageno < $nextpage) {
$nextpage = $annotation->pageno;
}
}
} else {
if ($annotation) {
$nextpage = $annotation->pageno;
} else {
break;
}
}
while ($nextpage > $mypdf->current_page()) {
if (!$mypdf->copy_page()) {
break 2;
}
}
while ($comment && $comment->pageno == $mypdf->current_page()) {
$mypdf->add_comment($comment->rawtext, $comment->posx, $comment->posy, $comment->width, $comment->colour);
$comment = next($comments);
}
while ($annotation && $annotation->pageno == $mypdf->current_page()) {
if ($annotation->type == 'freehand') {
$path = explode(',', $annotation->path);
$mypdf->add_annotation(0, 0, 0, 0, $annotation->colour, 'freehand', $path);
} else {
$mypdf->add_annotation($annotation->startx, $annotation->starty, $annotation->endx, $annotation->endy, $annotation->colour, $annotation->type, $annotation->path);
}
$annotation = next($annotations);
}
}
$mypdf->copy_remaining_pages();
$mypdf->save_pdf($destfile);
// Delete any previous response file.
if ($file = $fs->get_file($context->id, 'assignfeedback_pdf', ASSIGNFEEDBACK_PDF_FA_RESPONSE, $submissionid, $this->get_subfolder(), ASSIGNFEEDBACK_PDF_FILENAME)) {
$file->delete();
}
$fileinfo = array('contextid' => $context->id, 'component' => 'assignfeedback_pdf', 'filearea' => ASSIGNFEEDBACK_PDF_FA_RESPONSE, 'itemid' => $submissionid, 'filepath' => $this->get_subfolder(), 'filename' => ASSIGNFEEDBACK_PDF_FILENAME);
$fs->create_file_from_pathname($fileinfo, $destfile);
@unlink($sourcefile);
@unlink($destfile);
@rmdir($temparea);
@rmdir(dirname($temparea));
return true;
}