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correct.php
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correct.php
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<?php
// This file is part of mod_offlinequiz for Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* The manual correction interface for offlinequizzes
*
* @package mod
* @subpackage offlinequiz
* @author Juergen Zimmer <[email protected]>
* @copyright 2015 Academic Moodle Cooperation {@link http://www.academic-moodle-cooperation.org}
* @since Moodle 2.4
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*
**/
require_once('../../config.php');
require_once($CFG->dirroot . '/mod/offlinequiz/locallib.php');
require_once($CFG->dirroot . '/mod/offlinequiz/evallib.php');
require_once($CFG->dirroot . '/mod/offlinequiz/report/default.php');
require_once($CFG->dirroot . '/mod/offlinequiz/report/rimport/scanner.php');
$scannedpageid = optional_param('pageid', 0, PARAM_INT);
$overwrite = optional_param('overwrite', 0, PARAM_INT);
$action = optional_param('action', 'load', PARAM_TEXT);
$userchanged = optional_param('userchanged', 0, PARAM_INT);
if (!$scannedpage = $DB->get_record('offlinequiz_scanned_pages', array('id' => $scannedpageid))) {
print_error('noscannedpage', 'offlinequiz', $CFG->wwwroot . '/course/view.php?id=' . $COURSE->id, $scannedpageid);
}
if (!$offlinequiz = $DB->get_record('offlinequiz', array('id' => $scannedpage->offlinequizid))) {
print_error('noofflinequiz', 'offlinequiz', $CFG->wwwroot . '/course/view.php?id=' . $COURSE->id, $scannedpage->offlinequizid);
}
if (!$course = $DB->get_record('course', array('id' => $offlinequiz->course))) {
print_error('nocourse', 'offlinequiz', $CFG->wwwroot . '/course/view.php?id=' . $COURSE->id,
array('course' => $offlinequiz->course,
'offlinequiz' => $offlinequiz->id));
}
if (!$cm = get_coursemodule_from_instance("offlinequiz", $offlinequiz->id, $course->id)) {
print_error('cmmissing', 'offlinequiz', $CFG->wwwroot . '/course/view.php?id=' . $COURSE->id, $offlinequiz->id);
}
if (!$groups = $DB->get_records('offlinequiz_groups', array('offlinequizid' => $offlinequiz->id), 'number',
'*', 0, $offlinequiz->numgroups)) {
print_error('nogroups', 'offlinequiz', $CFG->wwwroot . '/course/view.php?id=' . $COURSE->id, $scannedpage->offlinequizid);
}
require_login($course->id, false, $cm);
$context = context_module::instance($cm->id);
$coursecontext = context_course::instance($course->id);
require_capability('mod/offlinequiz:viewreports', $context);
$url = new moodle_url('/mod/offlinequiz/correct.php', array('pageid' => $scannedpage->id));
$PAGE->set_url($url);
$PAGE->set_pagelayout('report');
offlinequiz_load_useridentification();
$offlinequizconfig = get_config('offlinequiz');
// Determine the maxanswers and maxquestions for the scannedpage.
$selectedgroups = $groups;
if ($overwrite && $scannedpage->resultid) {
$result = $DB->get_record('offlinequiz_results', array('id' => $scannedpage->resultid));
$resultgroup = $DB->get_record('offlinequiz_groups', array('id' => $result->offlinegroupid));
$selectedgroups = array($resultgroup);
}
list($maxquestions, $maxanswers, $formtype, $questionsperpage) = offlinequiz_get_question_numbers($offlinequiz, $selectedgroups);
// Get the corners either from the request parameters of from the offlinequiz_page_corners table.
$corners = array();
$nodbcorners = false;
if ($action == 'rotate') {
$corners[0] = new oq_point(853 - required_param('c-3-x', PARAM_INT), 1208 - required_param('c-3-y', PARAM_INT));
$corners[1] = new oq_point(853 - required_param('c-2-x', PARAM_INT), 1208 - required_param('c-2-y', PARAM_INT));
$corners[2] = new oq_point(853 - required_param('c-1-x', PARAM_INT), 1208 - required_param('c-1-y', PARAM_INT));
$corners[3] = new oq_point(853 - required_param('c-0-x', PARAM_INT), 1208 - required_param('c-0-y', PARAM_INT));
offlinequiz_save_page_corners($scannedpage, $corners);
} else if ($action == 'readjust') {
$corners[0] = new oq_point(required_param('c-0-x', PARAM_INT) + 7, required_param('c-0-y', PARAM_INT) + 7);
$corners[1] = new oq_point(required_param('c-1-x', PARAM_INT) + 7, required_param('c-1-y', PARAM_INT) + 7);
$corners[2] = new oq_point(required_param('c-2-x', PARAM_INT) + 7, required_param('c-2-y', PARAM_INT) + 7);
$corners[3] = new oq_point(required_param('c-3-x', PARAM_INT) + 7, required_param('c-3-y', PARAM_INT) + 7);
offlinequiz_save_page_corners($scannedpage, $corners);
} else if ($dbcorners = $DB->get_records('offlinequiz_page_corners', array('scannedpageid' => $scannedpage->id), 'position')) {
foreach ($dbcorners as $corner) {
$corners[] = new oq_point($corner->x, $corner->y);
}
} else {
// Define some default corners.
$corners[0] = new oq_point(55, 39);
$corners[1] = new oq_point(805, 49);
$corners[2] = new oq_point(44, 1160);
$corners[3] = new oq_point(805, 1160);
$nodbcorners = true;
}
// Initialize a page scanner.
$scanner = new offlinequiz_page_scanner($offlinequiz, $context->id, $maxquestions, $maxanswers);
// Load the stored image file.
if (property_exists($scannedpage, 'id')) {
// If we re-adjust, rotate, or changed the user we have to delete the stored hotspots.
if ($action == 'readjust' || $action == 'rotate' || $action == 'checkuser') {
$DB->delete_records('offlinequiz_hotspots', array('scannedpageid' => $scannedpage->id));
}
// Load the stored image and the hotspots from the DB if they have not been deleted.
$sheetloaded = $scanner->load_stored_image($scannedpage->filename, $corners, $scannedpage->id);
} else {
// Load the stored image and adjust the hotspots from scratch.
$sheetloaded = $scanner->load_stored_image($scannedpage->filename, $corners);
}
// Make a first check.
if (!$scanner->check_deleted()) {
$scannedpage->status = 'error';
$scannedpage->error = 'notadjusted';
}
// O=======================================.
// O Step 1. Get the data from the stored scanned page.
// O=======================================.
if ($action == 'load') {
$filename = $scannedpage->filename;
$userkey = $scannedpage->userkey;
$usernumber = substr($userkey, strlen($offlinequizconfig->ID_prefix), $offlinequizconfig->ID_digits);
$groupnumber = intval($scannedpage->groupnumber);
$pagenumber = intval($scannedpage->pagenumber);
// Remember initial data for cancel action.
$origfilename = $filename;
$origuserkey = $userkey;
$origgroupnumber = $groupnumber;
$origpagenumber = $pagenumber;
$origstatus = $scannedpage->status;
$origerror = $scannedpage->error;
$origtime = $scannedpage->time;
} else {
if ($submitfilename = optional_param('filename', '', PARAM_RAW)) {
$scannedpage->filename = $submitfilename;
$filename = $submitfilename;
}
$origfilename = required_param('origfilename', PARAM_FILE);
$origuserkey = required_param('origuserkey', PARAM_ALPHANUM);
$origgroupnumber = required_param('origgroupnumber', PARAM_INT);
$origpagenumber = required_param('origpagenumber', PARAM_INT);
$origstatus = required_param('origstatus', PARAM_ALPHA);
$origerror = required_param('origerror', PARAM_ALPHA);
$origtime = required_param('origtime', PARAM_INT);
}
// If we still don't have corners, get them from the scanner.
if ($nodbcorners) {
$corners = $scanner->get_corners();
offlinequiz_save_page_corners($scannedpage, $corners);
}
// O=======================================.
// O Step 2. The user might have submitted data.
// O=======================================.
// O=============================================.
// O Action cancel.
// O=============================================.
if ($action == 'cancel') {
$scannedpage->filename = $origfilename;
$scannedpage->userkey = $origuserkey;
$scannedpage->groupnumber = $origgroupnumber;
$scannedpage->pagenumber = $origpagenumber;
$scannedpage->status = $origstatus;
$scannedpage->error = $origerror;
$scannedpage->time = $origtime;
$DB->update_record('offlinequiz_scanned_pages', $scannedpage);
// Display a button to close the window and die.
echo '<html>';
echo '<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head>';
echo "<center><input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('closewindow', 'offlinequiz').
"\" name=\"submitbutton4\" onClick=\"self.close(); return false;\"></center>";
echo '</html>';
die;
// O=============================================.
// O Action checkuser.
// O=============================================.
} else if ($action == 'checkuser') {
if (!confirm_sesskey()) {
print_error('invalidsesskey');
echo "<input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('cancel')."\" name=\"submitbutton4\"
onClick=\"self.close(); return false;\"><br />";
die;
}
// Maybe old errors have been fixed.
$scannedpage->status = 'ok';
$DB->set_field('offlinequiz_scanned_pages', 'status', 'ok', array('id' => $scannedpage->id));
$scannedpage->error = '';
$DB->set_field('offlinequiz_scanned_pages', 'error', '', array('id' => $scannedpage->id));
$groupnumber = required_param('groupnumber', PARAM_TEXT);
$groupnumber = intval($groupnumber);
// Old code if (!property_exists($scannedpage, 'groupnumber') || $scannedpage->groupnumber == 0) {.
$scanner->set_group($groupnumber);
$scannedpage->groupnumber = $groupnumber;
// O=======================================================.
// O Adjust the maxanswers of the scanner according to the offlinequiz group
// O=======================================================.
if ($newgroup = $DB->get_record('offlinequiz_groups', array('offlinequizid' => $offlinequiz->id, 'number' => $groupnumber))) {
$maxanswers = offlinequiz_get_maxanswers($offlinequiz, array($newgroup));
$scannedpage = $scanner->set_maxanswers($maxanswers, $scannedpage);
}
$usernumber = required_param('usernumber', PARAM_TEXT);
$xes = 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
// If we have only X's then we ignore the input.
$userkey = $offlinequizconfig->ID_prefix . $usernumber . $offlinequizconfig->ID_postfix;
if ($usernumber == substr($xes, 0, $offlinequizconfig->ID_digits)) {
$scannedpage->userkey = null;
$DB->set_field('offlinequiz_scanned_pages', 'userkey', null, array('id' => $scannedpage->id));
} else {
$scannedpage->userkey = $userkey;
}
// Now we check the scanned page with potentially updated information.
// Removed $scannedpage = offlinequiz_check_for_changed_groupnumber($offlinequiz, $scanner, $scannedpage,
// $coursecontext, $questionsperpage, $offlinequizconfig);.
$oldresultid = $scannedpage->resultid;
$scannedpage = offlinequiz_check_for_changed_user($offlinequiz, $scanner, $scannedpage, $coursecontext,
$questionsperpage, $offlinequizconfig);
if ($oldresultid != $scannedpage->resultid) {
// A new result has been linked to the scanned page.
// Already process the answers but don't submit them yet.
$scannedpage = offlinequiz_process_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id,
$questionsperpage, $coursecontext, false);
$userchanged = 1;
}
if (!$overwrite) {
$scannedpage = offlinequiz_check_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id, $coursecontext);
if ($scannedpage->status == 'error' && $scannedpage->error == 'resultexists') {
// Already process the answers but don't submit them.
$scannedpage = offlinequiz_process_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id,
$questionsperpage, $coursecontext, false);
// Compare the old and the new result wrt. the choices.
$scannedpage = offlinequiz_check_different_result($scannedpage);
}
}
$userkey = $scannedpage->userkey;
$usernumber = substr($userkey, strlen($offlinequizconfig->ID_prefix), $offlinequizconfig->ID_digits);
$groupnumber = intval($scannedpage->groupnumber);
$pagenumber = intval($scannedpage->pagenumber);
$scanner->set_page($scannedpage->pagenumber);
// O=============================================.
// O Action update.
// O=============================================.
} else if ($action == 'update') {
if (!confirm_sesskey()) {
print_error('invalidsesskey');
echo "<input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('cancel')."\" name=\"submitbutton4\"
onClick=\"self.close(); return false;\"><br />";
die;
}
// Maybe old errors have been fixed.
$scannedpage->status = 'ok';
$scannedpage->error = '';
$scannedpage->warningfilename = '';
$groupnumber = required_param('groupnumber', PARAM_TEXT);
$scannedpage->groupnumber = $groupnumber;
$scanner->set_group($groupnumber);
$usernumber = required_param('usernumber', PARAM_TEXT);
// If we have only X's then we ignore the input.
if (!empty($usernumber)) {
$userkey = $offlinequizconfig->ID_prefix . $usernumber . $offlinequizconfig->ID_postfix;
$scannedpage->userkey = $userkey;
}
if ($overwrite && !$userchanged) {
// We want to overwrite an old result, so we have to create a new one.
// Don't delete the choices stored in the DB.
// Delete the old result and create a new one.
if ($scannedpage->resultid && $oldresult = $DB->get_record('offlinequiz_results', array('id' => $scannedpage->resultid))) {
$oldresultid = $scannedpage->resultid;
$scannedpage->resultid = 0;
$DB->set_field('offlinequiz_scanned_pages', 'resultid', 0, array('id' => $scannedpage->id));
}
// This should create a new result and set the resultid field of the scannedpage.
$scannedpage = offlinequiz_check_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id, $coursecontext);
if ($scannedpage->resultid) {
// Get all other pages of the old result and set their resultid number to the new one.
$sql = "SELECT *
FROM {offlinequiz_scanned_pages}
WHERE offlinequizid = :offlinequizid
AND resultid = :resultid
AND status = 'submitted'
AND id <> :currentpageid";
$params = array('offlinequizid' => $scannedpage->offlinequizid, 'resultid' => $oldresultid,
'currentpageid' => $scannedpage->id);
if ($oldpages = $DB->get_records_sql($sql, $params)) {
// Load the new result and the quba slots.
$newresult = $DB->get_record('offlinequiz_results', array('id' => $scannedpage->resultid));
$quba = question_engine::load_questions_usage_by_activity($newresult->usageid);
$pageslots = $quba->get_slots();
foreach ($oldpages as $page) {
$page->resultid = $scannedpage->resultid;
$DB->set_field('offlinequiz_scanned_pages', 'resultid', $scannedpage->resultid, array('id' => $page->id));
// Load the choices made before from the database. This might be empty.
$pagechoices = $DB->get_records('offlinequiz_choices', array('scannedpageid' => $page->id),
'slotnumber, choicenumber');
// Choicesdata contains the choices data from the DB indexed by slotnumber and choicenumber.
$pagechoicesdata = array();
if (!empty($pagechoices)) {
foreach ($pagechoices as $pagechoice) {
if (!isset($pagechoicesdata[$pagechoice->slotnumber]) ||
!is_array($pagechoicesdata[$pagechoice->slotnumber])) {
$pagechoicesdata[$pagechoice->slotnumber] = array();
}
$pagechoicesdata[$pagechoice->slotnumber][$pagechoice->choicenumber] = $pagechoice;
}
}
// Determine the slice of slots we are interested in.
// We start at the top of the page (e.g. 0, 96, etc).
$pagestartindex = min(($page->pagenumber - 1) * $questionsperpage, count($pageslots));
// We end on the bottom of the page or when the questions are gone (e.g., 95, 105).
$pageendindex = min($page->pagenumber * $questionsperpage, count($pageslots));
// Submit the choices of the other pages to the new result.
$page = offlinequiz_submit_scanned_page($offlinequiz, $page, $pagechoicesdata, $pagestartindex, $pageendindex);
}
}
// Finally, delete the old result.
offlinequiz_delete_result($oldresultid, $context);
} else {
// Otherwise keep the old resultid.
$scannedpage->resultid = $oldresultid;
$DB->update_record('offlinequiz_scanned_pages', $scannedpage);
}
// TODO we have to figure out what to do with the other pages in case of a multipage test.
}
if (!$overwrite) {
$scannedpage = offlinequiz_check_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id, $coursecontext);
if ($scannedpage->status == 'error' && $scannedpage->error == 'resultexists') {
// Already process the answers but don't submit them.
$scannedpage = offlinequiz_process_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id,
$questionsperpage, $coursecontext, false);
// Compare the old and the new result wrt. the choices.
$scannedpage = offlinequiz_check_different_result($scannedpage);
}
}
$userkey = $scannedpage->userkey;
$usernumber = substr($userkey, strlen($offlinequizconfig->ID_prefix), $offlinequizconfig->ID_digits);
$groupnumber = intval($scannedpage->groupnumber);
$pagenumber = intval($scannedpage->pagenumber);
$DB->update_record('offlinequiz_scanned_pages', $scannedpage);
// The updated item information (crosses), will be processed later.
$rawitemdata = required_param_array('item', PARAM_RAW);
// O=============================================.
// O Action rotate.
// O=============================================.
} else if ($action == 'rotate') {
if (!confirm_sesskey()) {
print_error('invalidsesskey');
echo "<input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('cancel')."\" name=\"submitbutton4\"
onClick=\"self.close(); return false;\"><br />";
die;
}
if ($newfile = $scanner->rotate_180()) {
// Maybe old errors have been fixed.
$scannedpage->status = 'ok';
$scannedpage->error = '';
$scannedpage->userkey = null;
$scannedpage->pagenumber = null;
$scannedpage->groupnumber = null;
$scannedpage->filename = $newfile->get_filename();
$filename = $newfile->get_filename();
// Create a completely new scanner.
$scanner = new offlinequiz_page_scanner($offlinequiz, $context->id, $maxquestions, $maxanswers);
$sheetloaded = $scanner->load_stored_image($scannedpage->filename, array());
if ($sheetloaded && !$overwrite) {
$scannedpage = offlinequiz_check_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id, $coursecontext);
if ($scannedpage->status == 'error' && $scannedpage->error == 'resultexists') {
// Already process the answers but don't submit them.
$scannedpage = offlinequiz_process_scanned_page($offlinequiz, $scanner, $scannedpage, $job->importuserid,
$questionsperpage, $coursecontext, false);
// Compare the old and the new result wrt. the choices.
$scannedpage = offlinequiz_check_different_result($scannedpage);
}
}
$userkey = $scannedpage->userkey;
$usernumber = substr($userkey, strlen($offlinequizconfig->ID_prefix), $offlinequizconfig->ID_digits);
$groupnumber = intval($scannedpage->groupnumber);
$pagenumber = intval($scannedpage->pagenumber);
$DB->update_record('offlinequiz_scanned_pages', $scannedpage);
}
// O=============================================.
// O Action setpage.
// O=============================================.
} else if ($action == 'setpage') {
if (!confirm_sesskey()) {
print_error('invalidsesskey');
echo "<input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('cancel')."\" name=\"submitbutton4\"
onClick=\"self.close(); return false;\"><br />";
die;
}
// If the page number was invalid and the user selected a pagenumber, take that and hope that page is OK now.
$scannedpage->pagenumber = optional_param('page', 0, PARAM_INT);
$pagenumber = $scannedpage->pagenumber;
$scannedpage->status = 'ok';
$scannedpage->error = '';
if (!$overwrite) {
$scannedpage = offlinequiz_check_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id, $coursecontext);
if ($scannedpage->status == 'error' && $scannedpage->error == 'resultexists') {
// Already process the answers but don't submit them.
$scannedpage = offlinequiz_process_scanned_page($offlinequiz, $scanner, $scannedpage, $job->importuserid,
$questionsperpage, $coursecontext, false);
// Compare the old and the new result wrt. the choices.
$scannedpage = offlinequiz_check_different_result($scannedpage);
}
}
$userkey = $scannedpage->userkey;
$usernumber = substr($userkey, strlen($offlinequizconfig->ID_prefix), $offlinequizconfig->ID_digits);
$groupnumber = intval($scannedpage->groupnumber);
$pagenumber = intval($scannedpage->pagenumber);
// O=============================================.
// O Action readjust.
// O=============================================.
} else if ($action == 'readjust') {
if (!confirm_sesskey()) {
print_error('invalidsesskey');
echo "<input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('cancel')."\" name=\"submitbutton4\"
onClick=\"self.close(); return false;\"><br />";
die;
}
$scannedpage->status = 'ok';
$scannedpage->error = '';
// We reset all user information s.t. it is retrieved again from the scanner.
$scannedpage->userkey = null;
$scannedpage->pagenumber = null;
$scannedpage->groupnumber = null;
$scannedpage = offlinequiz_check_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id, $coursecontext);
$userkey = $scannedpage->userkey;
$usernumber = substr($userkey, strlen($offlinequizconfig->ID_prefix), $offlinequizconfig->ID_digits);
$groupnumber = intval($scannedpage->groupnumber);
$pagenumber = intval($scannedpage->pagenumber);
$DB->update_record('offlinequiz_scanned_pages', $scannedpage);
} else if ($action == 'enrol' && $offlinequizconfig->oneclickenrol) {
// O=============================================.
// O Action enrol.
// O=============================================.
if (!confirm_sesskey()) {
print_error('invalidsesskey');
echo "<input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('cancel')."\" name=\"submitbutton4\"
onClick=\"self.close(); return false;\"><br />";
die;
}
require_once($CFG->libdir . '/enrollib.php');
require_once($CFG->dirroot.'/enrol/manual/locallib.php');
// Check that the user has the permission to manual enrol.
require_capability('enrol/manual:enrol', $coursecontext);
$userid = $DB->get_field('user', 'id', array($offlinequizconfig->ID_field => $scannedpage->userkey), MUST_EXIST);
// Get the manual enrolment plugin.
$enrol = enrol_get_plugin('manual');
if (empty($enrol)) {
throw new moodle_exception('manualpluginnotinstalled', 'enrol_manual');
}
if (!is_enrolled($coursecontext, $userid)) {
// Now we need the correct instance of the manual enrolment plugin.
if (!$instance = $DB->get_record('enrol', array('courseid' => $course->id, 'enrol' => 'manual'), '*', IGNORE_MISSING)) {
if ($instanceid = $enrol->add_default_instance($course)) {
$instance = $DB->get_record('enrol', array('courseid' => $course->id, 'enrol' => 'manual'), '*', MUST_EXIST);
}
}
if ($instance != false) {
$enrol->enrol_user($instance, $userid, $offlinequizconfig->oneclickrole);
}
}
// Now we look for other pages with that user and reset their status.
$sql = "SELECT *
FROM {offlinequiz_scanned_pages}
WHERE offlinequizid = :offlinequizid
AND status = 'error'
AND error = 'usernotincourse'
AND userkey = :currentuserkey
AND id <> :currentpageid";
$params = array('offlinequizid' => $offlinequiz->id,
'currentuserkey' => $scannedpage->userkey,
'currentpageid' => $scannedpage->id);
$otherpages = $DB->get_records_sql($sql, $params);
foreach ($otherpages as $otherpage) {
$otherpage->status = 'ok';
$otherpage->error = '';
$tempscanner = new offlinequiz_page_scanner($offlinequiz, $context->id, $maxquestions, $maxanswers);
$tempcorners = array();
if ($dbcorners = $DB->get_records('offlinequiz_page_corners', array('scannedpageid' => $otherpage->id), 'position')) {
foreach ($dbcorners as $corner) {
$tempcorners[] = new oq_point($corner->x, $corner->y);
}
} else {
$tempcorners[0] = new oq_point(55, 39);
$tempcorners[1] = new oq_point(805, 49);
$tempcorners[2] = new oq_point(44, 1160);
$tempcorners[3] = new oq_point(805, 1160);
}
$tempscanner->load_stored_image($otherpage->filename, $tempcorners);
$otherpage = offlinequiz_check_scanned_page($offlinequiz, $tempscanner, $otherpage, $USER->id, $coursecontext);
if ($otherpage->status == 'ok') {
$otherpage = offlinequiz_process_scanned_page($offlinequiz, $tempscanner, $otherpage, $USER->id,
$questionsperpage, $coursecontext, true);
}
$DB->update_record('offlinequiz_scanned_pages', $otherpage);
}
// Now reset the status of the original page and check it again.
$scannedpage->status = 'ok';
$scannedpage->error = '';
// Now check the scanned page again. The user should be enrolled now.
$scannedpage = offlinequiz_check_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id, $coursecontext);
$userkey = $scannedpage->userkey;
$usernumber = substr($userkey, strlen($offlinequizconfig->ID_prefix), $offlinequizconfig->ID_digits);
$groupnumber = intval($scannedpage->groupnumber);
$pagenumber = intval($scannedpage->pagenumber);
}
// We count the old choices to decide whether to process the page again.
$oldchoices = $DB->count_records('offlinequiz_choices', array('scannedpageid' => $scannedpage->id));
// If we have an OK page and the action was checkuser, setpage, etc. we should process the page.
if (($scannedpage->status == 'ok' || $scannedpage->status == 'suspended') && ($action == 'readjust' ||
$action == 'checkuser' || $action == 'enrol' || $action == 'setpage' || $action == 'rotate' ||
($action == 'load' && !$oldchoices))) {
// Process the scanned page and write the answers in the offlinequiz_choices table.
$scannedpage = offlinequiz_process_scanned_page($offlinequiz, $scanner, $scannedpage, $USER->id,
$questionsperpage, $coursecontext);
}
// Load the choices made before from the database. This might be empty.
$choices = $DB->get_records('offlinequiz_choices', array('scannedpageid' => $scannedpage->id), 'slotnumber, choicenumber');
// Choicesdata contains the choices data from the DB indexed by slotnumber and choicenumber.
$choicesdata = array();
if (!empty($choices)) {
foreach ($choices as $choice) {
if (!isset($choicesdata[$choice->slotnumber]) || !is_array($choicesdata[$choice->slotnumber])) {
$choicesdata[$choice->slotnumber] = array();
}
$choicesdata[$choice->slotnumber][$choice->choicenumber] = $choice;
}
}
// Retrieve the offlinequiz group.
if (is_numeric($groupnumber) && $groupnumber > 0 && $groupnumber <= $offlinequiz->numgroups) {
if (!$group = $DB->get_record('offlinequiz_groups', array('offlinequizid' => $offlinequiz->id, 'number' => $groupnumber))) {
print_error('nogroup', 'offlinequiz', $CFG->wwwroot . '/course/view.php?id=' . $COURSE->id, $offlinequiz->id);
}
} else {
$group = null;
}
// Check whether the user exists in Moodle.
$user = $DB->get_record('user', array($offlinequizconfig->ID_field => $userkey));
// Check whether the user is enrolled in the current course.
$notincourse = false;
$coursestudents = get_role_users(5, $coursecontext);
if ($user && empty($coursestudents[$user->id])) {
$scannedpage->status = 'error';
$scannedpage->error = 'usernotincourse';
}
// Retrieve the result from the database.
$result = null;
if ($group && $user && $result = $DB->get_record('offlinequiz_results', array('id' => $scannedpage->resultid))) {
$quba = question_engine::load_questions_usage_by_activity($result->usageid);
$slots = $quba->get_slots();
// Determine the slice of slots we are interested in.
// We start at the top of the page (e.g. 0, 96, etc).
$startindex = min(($pagenumber - 1) * $questionsperpage, count($slots));
// We end on the bottom of the page or when the questions are gone (e.g., 95, 105).
$endindex = min( $pagenumber * $questionsperpage, count($slots) );
if ($action == 'update') {
echo $OUTPUT->heading(get_string('resultimport', 'offlinequiz'));
$changed = array();
$questioncounter = 0;
$unknown = false;
// If we have the result slots, we update the choicesdata with the data sent by the user.
if (!empty($rawitemdata) && !empty($slots)) {
for ($slotindex = $startindex; $slotindex < $endindex; $slotindex++) {
$slot = $slots[$slotindex];
$slotquestion = $quba->get_question($slot);
$attempt = $quba->get_question_attempt($slot);
$order = $slotquestion->get_order($attempt); // Order of the answers.
foreach ($order as $key => $notused) {
if ($rawitemdata[$slot . '-' . $key] == -1) {
$unknown = true;
}
if ($choicesdata[$slot][$key]->value != $rawitemdata[$slot . '-' . $key]) {
$changed[] = array('question' => $questioncounter,
'answer' => $key);
}
if (is_array($choicesdata[$slot]) && is_object($choicesdata[$slot][$key])) {
// Remember the changed fields in case we want to display them to the user.
$choicesdata[$slot][$key]->value = $rawitemdata[$slot . '-' . $key];
$DB->set_field('offlinequiz_choices', 'value', $choicesdata[$slot][$key]->value,
array('id' => $choicesdata[$slot][$key]->id));
} else {
$choice = new stdClass();
$choice->scannedpageid = $scannedpage->id;
$choice->slotnumber = $slot;
$choice->choicenumber = $key;
$choice->value = $rawitemdata[$slot . '-' . $key];
$choice->id = $DB->insert_record('offlinequiz_choices', $choice);
if (!isset($choicesdata[$choice->slotnumber]) || !is_array($choicesdata[$choice->slotnumber])) {
$choicesdata[$choice->slotnumber] = array();
}
$choicesdata[$slot][$key] = $choice;
}
}
$questioncounter++;
}
}
if ($show = optional_param('show', false, PARAM_BOOL)) {
$scanner->create_warning_image(substr($origuserkey, strlen($offlinequizconfig->ID_prefix),
$offlinequizconfig->ID_digits),
substr($user->{$offlinequizconfig->ID_field},
strlen($offlinequizconfig->ID_prefix),
$offlinequizconfig->ID_digits),
$origgroupnumber,
$group->number,
$changed);
$filerecord = array(
'contextid' => $context->id,
'component' => 'mod_offlinequiz',
'filearea' => 'imagefiles',
'itemid' => 0,
'filepath' => '/',
'filename' => $scanner->filename . '_warning');
// Create a unique temp dir.
srand(microtime() * 1000000);
$unique = str_replace('.', '', microtime(true) . rand(0, 100000));
$dirname = "{$CFG->tempdir}/offlinequiz/import/$unique";
check_dir_exists($dirname, true, true);
$warningpathname = $dirname . '/' . $filerecord['filename'];
imagepng($scanner->image, $warningpathname);
$newfile = $scanner->save_image($filerecord, $warningpathname);
$scannedpage->warningfilename = $newfile->get_filename();
$DB->set_field('offlinequiz_scanned_pages', 'warningfilename', $newfile->get_filename(),
array('id' => $scannedpage->id));
unlink($warningpathname);
remove_dir($dirname);
}
if (!$unknown) {
$scannedpage = offlinequiz_submit_scanned_page($offlinequiz, $scannedpage, $choicesdata, $startindex, $endindex);
if ($scannedpage->status == 'submitted') {
$result = $DB->get_record('offlinequiz_results', array('id' => $scannedpage->resultid));
echo '<p>';
if (offlinequiz_check_result_completed($offlinequiz, $group, $result)) {
echo get_string('userimported', 'offlinequiz', fullname($user) . " (" .
$user->{$offlinequizconfig->ID_field}.")" );
} else {
echo get_string('userpageimported', 'offlinequiz', fullname($user) . " (" .
$user->{$offlinequizconfig->ID_field}.")");
}
echo '</p>';
echo '<html>';
echo '<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head>';
if ($overwrite) {
echo "<input type=\"button\" value=\"".get_string('closewindow') .
"\" onClick=\"window.opener.location.replace('" .
$CFG->wwwroot . '/mod/offlinequiz/review.php?q=' . $offlinequiz->id . '&resultid=' .
$scannedpage->resultid . "'); window.close(); return false;\">";
} else {
echo "<input type=\"button\" value=\"".get_string('closewindow') .
"\" onClick=\"window.opener.location.reload(1); self.close(); return false;\">";
}
echo '<html>';
return;
}
} else {
// We found some insecure markings, which is weird, because they should have been found earlier...
$scannedpage->status = 'error';
$scannedpage->error = 'insecuremarkings';
$scannedpage->time = time();
$DB->update_record('offlinequiz_scanned_pages', $scannedpage);
}
}
}
$itemdata = array();
// Itemdata contains the values of the HTML inputs indexed by slotnumber and choicenumber.
// Itemdata is always set, even if we don't have any choices data in the DB.
if (!empty($slots)) {
// We start at the top of the page (e.g. 0, 96, etc).
$startindex = min( ($pagenumber - 1) * $questionsperpage, count($slots));
// We end on the bottom of the page or when the questions are gone (e.g., 95, 105).
$endindex = min( $pagenumber * $questionsperpage, count($slots) );
for ($slotindex = $startindex; $slotindex < $endindex; $slotindex++) {
$slot = $slots[$slotindex];
if (!isset($itemdata[$slot]) || !is_array($itemdata[$slot])) {
$itemdata[$slot] = array();
}
$slotquestion = $quba->get_question($slot);
$attempt = $quba->get_question_attempt($slot);
$order = $slotquestion->get_order($attempt); // Order of the answers.
foreach ($order as $key => $notused) {
if (isset($choicesdata[$slot]) and is_object($choicesdata[$slot][$key])) {
// If we have choices in the DB, take them.
$itemdata[$slot][$key] = $choicesdata[$slot][$key]->value;
} else {
// Otherwise the choice is undetermined.
$itemdata[$slot][$key] = 0;
}
}
}
}
if ($group && $pagenumber > 0 and $pagenumber <= $group->numberofpages) {
$scanner->set_page($pagenumber);
}
// O=======================================================================.
// O OUTPUT THE PAGE HTML.
// O=======================================================================.
echo '<html>';
echo "<style>\n";
echo "body {margin:0px; font-family:Arial,Verdana,Helvetica,sans-serif;}\n";
echo ".imagebutton {width:250px; height:24px; text-align:left; margin-bottom:10px;}\n";
echo "</style>\n";
echo '<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head>';
echo html_writer::script('', $CFG->wwwroot.'/mod/offlinequiz/lib/jquery/jquery-1.4.3.min.js');
echo html_writer::script('', $CFG->wwwroot.'/mod/offlinequiz/lib/jquery/ui/jquery.ui.core.js');
echo html_writer::script('', $CFG->wwwroot.'/mod/offlinequiz/lib/jquery/ui/jquery.ui.widget.js');
echo html_writer::script('', $CFG->wwwroot.'/mod/offlinequiz/lib/jquery/ui/jquery.ui.mouse.js');
echo html_writer::script('', $CFG->wwwroot.'/mod/offlinequiz/lib/jquery/ui/jquery.ui.draggable.js');
$javascript = "<script language=\"JavaScript\">
function checkinput() {
// Get all item elements. We have jquery!
items = $('input[name^=\"item\"]');
for (i=0; i < items.length; i++) {
if (items[i].value == '-1') {
parts = items[i].name.split('[');
numbers = parts[1].split('-');
alert(\"" . get_string('insecuremarkingsforquestion', 'offlinequiz') . " \" + numbers[0]);
return false;
}
}
if (document.forms.cform.usernumber.value.indexOf('X') >= 0) {
alert(\"" . get_string('insecuremarkings', 'offlinequiz') . ": \"+document.forms.cform.usernumber.value+\" (userid)\");
return false;
}
if (document.forms.cform.groupnumber.value.indexOf('X') >= 0) {
alert(\"" . get_string('insecuremarkings', 'offlinequiz') . ": \"+document.forms.cform.groupnumber.value+\" (group)\");
return false;
}
}
function set_userid(image, x, y) {
for (i=0; i<=9; i++) {
key = 'u'+x+i;
document.images[key].src=\"$CFG->wwwroot/mod/offlinequiz/pix/spacer.gif\";
}
image.src=\"$CFG->wwwroot/mod/offlinequiz/pix/green.gif\";
document.forms.cform.usernumber.value = document.forms.cform.usernumber.value.substr(0,x) + y +
document.forms.cform.usernumber.value.substr(x+1);
}
function set_group(image, x) {
for (i=0; i<=5; i++) {
document.images['g'+i].src=\"$CFG->wwwroot/mod/offlinequiz/pix/spacer.gif\";
}
image.src=\"$CFG->wwwroot/mod/offlinequiz/pix/green.gif\"
document.forms.cform.groupnumber.value = x+1;
document.forms.cform.elements['action'].value='checkuser';
document.forms.cform.submit();
}
function set_item(image, x, y) {
key = 'item['+x+'-'+y+']';
if (document.forms.cform.elements[key].value == '1') {
image.src=\"$CFG->wwwroot/mod/offlinequiz/pix/spacer.gif\";
document.forms.cform.elements[key].value = 0;
} else {
image.src=\"$CFG->wwwroot/mod/offlinequiz/pix/green.gif\";
document.forms.cform.elements[key].value = 1;
}
}
function submitReadjust() {
changed = false;
for (i=0; i<=3; i++) {
corner = document.getElementById('c-'+i);
document.forms.cform.elements['c-'+i+'-x'].value = corner.style.left.replace('px','');
document.forms.cform.elements['c-'+i+'-y'].value = corner.style.top.replace('px','');
if (document.forms.cform.elements['c-'+i+'-x'].value != document.forms.cform.elements['c-old-'+i+'-x'].value) {
changed = true;
}
if (document.forms.cform.elements['c-'+i+'-y'].value != document.forms.cform.elements['c-old-'+i+'-y'].value) {
changed = true;
}
}
if (!changed) {
alert('" . get_string('movecorners', 'offlinequiz') . "');
} else {
document.forms.cform.elements['action'].value='readjust';
document.forms.cform.submit();
}
}
function submitCancel() {
document.forms.cform.elements['action'].value='cancel';
document.forms.cform.submit();
}
function submitPage() {
for (i=0; i<=3; i++) {
corner = document.getElementById('c-'+i);
document.forms.cform.elements['c-'+i+'-x'].value = corner.style.left.replace('px','');
document.forms.cform.elements['c-'+i+'-y'].value = corner.style.top.replace('px','');
}
document.forms.cform.elements['action'].value='setpage';
document.forms.cform.submit();
}
function submitCheckuser() {
for (i=0; i<=3; i++) {
// Reset possible readjustment.
document.forms.cform.elements['c-'+i+'-x'].value = document.forms.cform.elements['c-old-'+i+'-x'].value;
document.forms.cform.elements['c-'+i+'-y'].value = document.forms.cform.elements['c-old-'+i+'-y'].value;
}
document.forms.cform.elements['action'].value='checkuser';
document.forms.cform.submit();
}
function submitEnrol() {
document.forms.cform.elements['action'].value='enrol';
document.forms.cform.submit();
}
function submitRotated() {
document.forms.cform.elements['action'].value='rotate';
document.forms.cform.submit();
}
function toggleImage() {
img = $('#scannedimage').toggle();
}
</script>";
echo $javascript;
$fs = get_file_storage();
$imagefile = $fs->get_file($context->id, 'mod_offlinequiz', 'imagefiles', 0, '/', $scannedpage->filename);
// Print image of the form sheet.
echo '<img id="scannedimage" name="formimage" src="' . $CFG->wwwroot .
"/pluginfile.php/$context->id/mod_offlinequiz/imagefiles/0/" .
$imagefile->get_filename() .'" border="1" width="' . OQ_IMAGE_WIDTH .
'" style="position:absolute; top:0px; left:0px; display: block;">';
// Print user name, number, and the page number.
echo "<div style=\"position:absolute; top: 20px; left: 130px\">\n";
if ($user && $user->firstname != '' and $user->lastname != '') {
echo "<strong style=\"color: green\">" . fullname($user) . " (" . $userkey . ")</strong>\n";
} else if (!empty($userkey)) {
echo "<strong style=\"color: red\">" . get_string('userdoesnotexist', 'offlinequiz', $userkey) . "</strong>\n";
}
if (!empty($pagenumber)) {
echo " " . get_string('page') . ": " . $pagenumber;
if ($group && $group->numberofpages) {
echo "/" . $group->numberofpages . "\n";
}
}
if ($scannedpage->status == 'error') {
echo " <strong style=\"color: red\">(" . get_string('error' .
$scannedpage->error, 'offlinequiz_rimport') . ")</strong>\n";
}
echo "</div>\n";
// Print action buttons and form.
echo "<form method=\"post\" action=\"correct.php?pageid=$scannedpage->id\" id=\"cform\">\n";
echo "<div style=\"position:absolute; top:10px; left:" . (OQ_IMAGE_WIDTH + 10) . "px; width:280px\">\n";
echo "<div style=\"margin:4px;margin-bottom:8px\"><u>";
print_string('actions');
echo ":</u></div>\n";
echo "<input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('cancel')."\" name=\"submitbutton4\"
onClick=\"submitCancel(); return false;\"><br />";
echo "<input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('rotate', 'offlinequiz')."\" name=\"submitbutton5\"
onClick=\"submitRotated(); return false;\"><br />";
echo "<input class=\"imagebutton\" type=\"submit\" value=\"" . get_string('readjust', 'offlinequiz')."\" name=\"submitbutton3\"
onClick=\"submitReadjust(); return false;\"><br />";
if ($scannedpage->status == 'ok' ||
$scannedpage->status == 'submitted' ||
$scannedpage->status == 'suspended' ||
$scannedpage->error == 'insecuremarkings' ||
$scannedpage->error == 'nonexistinguser' ||
$scannedpage->error == 'usernotincourse' ||
$scannedpage->error == 'resultexists' ||
$scannedpage->error == 'doublepage' ||
$scannedpage->error == 'differentresultexists' ||
$scannedpage->error == 'grouperror') {