Exemplo n.º 1
0
/**
 * Creates a personalized exam file.
 *
 * @param unknown $examid            
 * @return NULL
 */
function emarking_download_exam($examid, $multiplepdfs = false, $groupid = null, progress_bar $pbar = null, $sendprintorder = false, $idprinter = null, $printanswersheet = false, $debugprinting = false)
{
    global $DB, $CFG, $USER, $OUTPUT;
    require_once $CFG->dirroot . '/mod/emarking/lib/openbub/ans_pdf_open.php';
    // Validate emarking exam object
    if (!($downloadexam = $DB->get_record('emarking_exams', array('id' => $examid)))) {
        throw new Exception(get_string("invalidexamid", "mod_emarking"));
    }
    // Contexto del curso para verificar permisos
    $context = context_course::instance($downloadexam->course);
    if (!has_capability('mod/emarking:downloadexam', $context)) {
        throw new Exception(get_string("invalidaccess", "mod_emarking"));
    }
    // Verify that remote printing is enable, otherwise disable a printing order
    if ($sendprintorder && (!$CFG->emarking_enableprinting || $idprinter == null)) {
        throw new Exception('Printing is not enabled or printername was absent ' . $idprinter);
    }
    // Validate course
    if (!($course = $DB->get_record('course', array('id' => $downloadexam->course)))) {
        throw new Exception(get_string("invalidcourse", "mod_emarking"));
    }
    // Validate course category
    if (!($coursecat = $DB->get_record('course_categories', array('id' => $course->category)))) {
        throw new Exception(get_string("invalidcategoryid", "mod_emarking"));
    }
    // We tell the user we are setting up the printing
    if ($pbar) {
        $pbar->update(0, 1, get_string('settingupprinting', 'mod_emarking'));
    }
    // Default value for enrols that will be included
    if ($CFG->emarking_enrolincludes && strlen($CFG->emarking_enrolincludes) > 1) {
        $enrolincludes = $CFG->emarking_enrolincludes;
    }
    // If the exam sets enrolments, we use those
    if (isset($downloadexam->enrolments) && strlen($downloadexam->enrolments) > 1) {
        $enrolincludes = $downloadexam->enrolments;
    }
    // Convert enrolments to array
    $enrolincludes = explode(",", $enrolincludes);
    // Produce all PDFs first separatedly
    $filedir = $CFG->dataroot . "/temp/emarking/{$context->id}";
    $fileimg = $filedir . "/qr";
    $userimgdir = $filedir . "/u";
    $pdfdir = $filedir . "/pdf";
    emarking_initialize_directory($filedir, true);
    emarking_initialize_directory($fileimg, true);
    emarking_initialize_directory($userimgdir, true);
    emarking_initialize_directory($pdfdir, true);
    // Get all the files uploaded as forms for this exam
    $fs = get_file_storage();
    $files = $fs->get_area_files($context->id, 'mod_emarking', 'exams', $examid);
    // We filter only the PDFs
    $pdffileshash = array();
    foreach ($files as $filepdf) {
        if ($filepdf->get_mimetype() === 'application/pdf') {
            $pdffileshash[] = array('hash' => $filepdf->get_pathnamehash(), 'filename' => $filepdf->get_filename(), 'path' => emarking_get_path_from_hash($filedir, $filepdf->get_pathnamehash()));
        }
    }
    // Verify that at least we have a PDF
    if (count($pdffileshash) < 1) {
        throw new Exception(get_string("examhasnopdf", "mod_emarking"));
    }
    $students = emarking_get_students_for_printing($downloadexam->course);
    $studentinfo = array();
    $currenttemplate = 0;
    // Fill studentnames with student info (name, idnumber, id and picture)
    foreach ($students as $student) {
        $studentenrolments = explode(",", $student->enrol);
        // Verifies that the student is enrolled through a valid enrolment and that we haven't added her yet
        if (count(array_intersect($studentenrolments, $enrolincludes)) == 0 || isset($studentinfo[$student->id])) {
            continue;
        }
        // We create a student info object
        $studentobj = new stdClass();
        $studentobj->name = substr("{$student->lastname}, {$student->firstname}", 0, 65);
        $studentobj->idnumber = $student->idnumber;
        $studentobj->id = $student->id;
        $studentobj->picture = emarking_get_student_picture($student, $userimgdir);
        // Store student info in hash so every student is stored once
        $studentinfo[$student->id] = $studentobj;
    }
    // We validate the number of students as we are filtering by enrolment
    // type after getting the data
    $numberstudents = count($studentinfo);
    if ($numberstudents == 0) {
        throw new Exception('No students to print/create the exam');
    }
    // Add the extra students to the list
    for ($i = $numberstudents; $i < $numberstudents + $downloadexam->extraexams; $i++) {
        $studentobj = new stdClass();
        $studentobj->name = '..............................................................................';
        $studentobj->idnumber = 0;
        $studentobj->id = 0;
        $studentobj->picture = $CFG->dirroot . "/pix/u/f1.png";
        $studentinfo[] = $studentobj;
    }
    // Check if there is a logo file
    $logofilepath = emarking_get_logo_file($filedir);
    // If asked to do so we create a PDF witht the students list
    if ($downloadexam->printlist == 1) {
        $pdf = new FPDI();
        $pdf->SetPrintHeader(false);
        $pdf->SetPrintFooter(false);
        emarking_draw_student_list($pdf, $logofilepath, $downloadexam, $course, $studentinfo);
        $studentlistpdffile = $pdfdir . "/000-studentslist.pdf";
        $pdf->Output($studentlistpdffile, "F");
        // se genera el nuevo pdf
        $pdf = null;
    }
    // Here we produce a PDF file for each student
    $currentstudent = 0;
    foreach ($studentinfo as $stinfo) {
        // If we have a progress bar, we notify the new PDF being created
        if ($pbar) {
            $pbar->update($currentstudent + 1, count($studentinfo), $stinfo->name);
        }
        // We create the PDF file
        $pdf = new FPDI();
        $pdf->SetPrintHeader(false);
        $pdf->SetPrintFooter(false);
        // We use the next form available from the list of PDF forms sent
        if ($currenttemplate >= count($pdffileshash) - 1) {
            $currenttemplate = 0;
        } else {
            $currenttemplate++;
        }
        // Load the PDF from the filesystem as template
        $path = $pdffileshash[$currenttemplate]['path'];
        $originalpdfpages = $pdf->setSourceFile($path);
        $pdf->SetAutoPageBreak(false);
        // Add all pages in the template, adding the header if it corresponds
        for ($pagenumber = 1; $pagenumber <= $originalpdfpages + $downloadexam->extrasheets; $pagenumber++) {
            // Adding a page
            $pdf->AddPage();
            // If the page is not an extra page, we import the page from the template
            if ($pagenumber <= $originalpdfpages) {
                $template = $pdf->importPage($pagenumber);
                $pdf->useTemplate($template, 0, 0, 0, 0, true);
            }
            // If we have a personalized header, we add it
            if ($downloadexam->headerqr) {
                emarking_draw_header($pdf, $stinfo, $downloadexam->name, $pagenumber, $fileimg, $logofilepath, $course, $originalpdfpages + $downloadexam->extrasheets);
            }
        }
        // The filename will be the student id - course id - page number
        $qrstringtmp = $stinfo->id > 0 ? "{$stinfo->id}-{$course->id}-{$pagenumber}" : "NN{$currentstudent}+1-{$course->id}-{$pagenumber}";
        // Create the PDF file for the student
        $pdffile = $pdfdir . "/" . $qrstringtmp . ".pdf";
        $pdf->Output($pdffile, "F");
        // Store the exam file for printing later
        $stinfo->examfile = $pdffile;
        $stinfo->number = $currentstudent + 1;
        $stinfo->pdffilename = $qrstringtmp;
        $currentstudent++;
    }
    $sqlprinter = "SELECT id, name, command\n\t\t\tFROM {emarking_printers}\n\t\t\tWHERE id = ?";
    $printerinfo = $DB->get_record_sql($sqlprinter, array($idprinter));
    // If we have to print directly
    $debugprintingmsg = '';
    if ($sendprintorder) {
        // Check if we have to print the students list
        if ($downloadexam->printlist == 1) {
            $printresult = emarking_print_file($printerinfo->name, $printerinfo->command, $studentlistpdffile, $debugprinting);
            if (!$printresult) {
                $debugprintingmsg .= 'Problems printing ' . $studentlistpdffile . '<hr>';
            } else {
                $debugprintingmsg .= $printresult . '<hr>';
            }
        }
        // Print each student
        $currentstudent = 0;
        foreach ($studentinfo as $stinfo) {
            $currentstudent++;
            if ($pbar != null) {
                $pbar->update($currentstudent, count($studentinfo), get_string('printing', 'mod_emarking') . ' ' . $stinfo->name);
            }
            if (!isset($stinfo->examfile) || !file_exists($stinfo->examfile)) {
                continue;
            }
            $printresult = emarking_print_file($printerinfo->name, $printerinfo->command, $stinfo->examfile, $debugprinting);
            if (!$printresult) {
                $debugprintingmsg .= 'Problems printing ' . $stinfo->examfile . '<hr>';
            } else {
                $debugprintingmsg .= $printresult . '<hr>';
            }
        }
        if ($CFG->debug || $debugprinting) {
            echo $debugprintingmsg;
        }
        // Notify everyone that the exam was printed
        emarking_send_examprinted_notification($downloadexam, $course);
        $downloadexam->status = EMARKING_EXAM_SENT_TO_PRINT;
        $downloadexam->printdate = time();
        $DB->update_record('emarking_exams', $downloadexam);
        return true;
    }
    $examfilename = emarking_clean_filename($course->shortname, true) . "_" . emarking_clean_filename($downloadexam->name, true);
    $zipdebugmsg = '';
    if ($multiplepdfs) {
        $zip = new ZipArchive();
        $zipfilename = $filedir . "/" . $examfilename . ".zip";
        if ($zip->open($zipfilename, ZipArchive::CREATE) !== true) {
            throw new Exception('Could not create zip file');
        }
        // Check if we have to print the students list
        if ($downloadexam->printlist == 1) {
            $zip->addFile($studentlistpdffile);
        }
        // Add every student PDF to zip file
        $currentstudent = 0;
        foreach ($studentinfo as $stinfo) {
            $currentstudent++;
            if ($pbar != null) {
                $pbar->update($currentstudent, count($studentinfo), get_string('printing', 'mod_emarking') . ' ' . $stinfo->name);
            }
            if (!isset($stinfo->examfile) || !file_exists($stinfo->examfile)) {
                continue;
            }
            if (!$zip->addFile($stinfo->examfile, $stinfo->pdffilename . '.pdf')) {
                $zipdebugmsg .= "Problems adding {$stinfo->examfile} to ZIP file using name {$stinfo->pdffilename} <hr>";
            }
        }
        $zip->close();
        if ($CFG->debug || $debugprinting) {
            echo $zipdebugmsg;
        }
        // Notify everyone that the exam was downloaded
        emarking_send_examdownloaded_notification($downloadexam, $course);
        $downloadexam->status = EMARKING_EXAM_SENT_TO_PRINT;
        $downloadexam->printdate = time();
        $DB->update_record('emarking_exams', $downloadexam);
        // Read zip file from disk and send to the browser
        $file_name = basename($zipfilename);
        header("Content-Type: application/zip");
        header("Content-Disposition: attachment; filename=" . $examfilename . ".zip");
        header("Content-Length: " . filesize($zipfilename));
        readfile($zipfilename);
        exit;
    }
    // We create the final big PDF file
    $pdf = new FPDI();
    $pdf->SetPrintHeader(false);
    $pdf->SetPrintFooter(false);
    // We import the students list if required
    if ($downloadexam->printlist) {
        emarking_import_pdf_into_pdf($pdf, $studentlistpdffile);
    }
    // Add every student PDF to zip file
    $currentstudent = 0;
    foreach ($studentinfo as $stinfo) {
        $currentstudent++;
        if (!isset($stinfo->examfile) || !file_exists($stinfo->examfile)) {
            continue;
        }
        emarking_import_pdf_into_pdf($pdf, $stinfo->examfile);
    }
    // Notify everyone that the exam was downloaded
    emarking_send_examdownloaded_notification($downloadexam, $course);
    $downloadexam->status = EMARKING_EXAM_SENT_TO_PRINT;
    $downloadexam->printdate = time();
    $DB->update_record('emarking_exams', $downloadexam);
    $pdf->Output($examfilename . '.pdf', 'D');
}
Exemplo n.º 2
0
/**
 *
 * @param unknown $pdf            
 * @param unknown $filedir            
 * @param unknown $stinfo            
 * @param unknown $logofilepath            
 * @param unknown $path            
 * @param unknown $fileimg            
 * @param unknown $course            
 * @param unknown $examname            
 * @param unknown $answers            
 * @param unknown $attemptid            
 */
function emarking_add_answer_sheet($pdf, $filedir, $stinfo, $logofilepath, $path, $fileimg, $course, $examname, $answers, $attemptid)
{
    global $CFG;
    require_once $CFG->dirroot . '/mod/assign/feedback/editpdf/fpdi/fpdi2tcpdf_bridge.php';
    require_once $CFG->dirroot . '/mod/assign/feedback/editpdf/fpdi/fpdi.php';
    if ($answers == null) {
        return;
    }
    $answerspdffilename = $filedir . '/answer' . random_string(15) . '.pdf';
    $answerspdf = emarking_create_omr_answer_sheet($answers);
    $answerspdf->Output($answerspdffilename, 'F');
    $pdf->setSourceFile($answerspdffilename);
    $tplidx = $pdf->ImportPage(1);
    $s = $pdf->getTemplatesize($tplidx);
    $pdf->AddPage('P', array($s['w'], $s['h']));
    $pdf->useTemplate($tplidx);
    if ($path) {
        $pdf->setSourceFile($path);
    }
    $top = 50;
    $left = 10;
    $width = $s['w'] - 20;
    $height = $s['h'] - 65;
    // Corners
    $style = array('width' => 0.25, 'cap' => 'butt', 'join' => 'miter', 'dash' => 0, 'color' => array(0, 0, 0));
    $pdf->Circle($left, $top, 9, 0, 360, 'F', $style, array(0, 0, 0));
    $pdf->Circle($left, $top, 4, 0, 360, 'F', $style, array(255, 255, 255));
    $pdf->Circle($left + $width, $top, 9, 0, 360, 'F', $style, array(0, 0, 0));
    $pdf->Circle($left + $width, $top, 4, 0, 360, 'F', $style, array(255, 255, 255));
    $pdf->Circle($left, $top + $height, 9, 0, 360, 'F', $style, array(0, 0, 0));
    $pdf->Circle($left, $top + $height, 4, 0, 360, 'F', $style, array(255, 255, 255));
    $pdf->Circle($left + $width, $top + $height, 9, 0, 360, 'F', $style, array(0, 0, 0));
    $pdf->Circle($left + $width, $top + $height, 4, 0, 360, 'F', $style, array(255, 255, 255));
    emarking_draw_header($pdf, $stinfo, $examname, 1, $fileimg, $logofilepath, $course, null, false, true, $attemptid);
}