{

size_t pageCount = 0;

for (size_t s = 0; s < getNumStudents(); s++)

{

Student& student = db()->getStudent(s);

// Use the student name to form the file name for the repot

QString clean = student.getStudentName();

// Convert all non alpha/num chars into an underscore

for (QString::iterator i = clean.begin(); i != clean.end(); i++)

{

if (!i->isLetterOrNumber())

*i = '_';

}

if (clean.length() == 0)

{

GINFODIALOG(QString("Cannot render PDF because student %1 does not have a name assigned").arg(s+1));

return;

}

QString pdfname (dirname + "/report-" + clean + ".pdf");

GDEBUG ("Generating PDF [%s] for student [%s]", qPrintable(pdfname), qPrintable(student.getStudentId()));

QPrinter printer (QPrinter::HighResolution);

printer.setOutputFormat (QPrinter::PdfFormat);

printer.setOutputFileName (pdfname);

printer.setPageSize(QPrinter::Letter);

printer.setResolution(150); // DPI for the printing

printer.setColorMode(QPrinter::GrayScale);

QPainter painter;

if (!painter.begin(&printer)) // Check for errors here

GFATAL("Failed to do QPainter begin()");

// Can use this code to change the text color, but causes larger PDF files

// since it must use a color output format instead.

//QPen penColor(QColor("#000090")); // Change text to dark blue

//painter.setPen(penColor);

for (size_t p = 0; p < getNumPagesPerStudent(); p++)

{

pageCount++;

// Add spaces at the end so the widget can resize into the reserved space without a re-layout

Global::getStatusLabel()->setText(QString("Generating PDF for student %1 of %2, page %3 of %4 (%5 percent) ").

arg(s+1).arg(getNumStudents()).arg(p+1).arg(getNumPagesPerStudent()).arg(rint(0.5+100.0*pageCount/(1.0*getNumPages()))));

// Flush out Qt events so that the UI update occurs inside this handler

Global::getQApplication()->processEvents();

GDEBUG ("Printing page %zu of %zu for report [%s]", p+1, getNumPagesPerStudent(), qPrintable(pdfname));

QPixmap pix = getPages()->getQPixmap(p+s*getNumPagesPerStudent());

// Scale the pixmap to fit the printer

pix = pix.scaled(printer.pageRect().width(), printer.pageRect().height(), Qt::KeepAspectRatio);

// Draw the pixmap to the printer

painter.drawPixmap (0, 0, pix);

// Print out the student details at the top of the page

QString title = QString("Name: %1 ID: %2 Page: %3 of %4 Final Grade: %5 of %6").arg(student.getStudentName()).arg(student.getStudentId()).arg(p+1).arg(getNumPagesPerStudent()).arg(student.getTotal()).arg(db()->getTotalMaximum());

painter.drawText(0, 0, title);

// Build up a results string to print onto the page

QString grades ("Results:");

size_t pageTotal = 0;

size_t pageMax = 0;

for (size_t q = 0; q < getNumQuestions(); q++)

{

// See if the question is on this page

GASSERT(Global::db()->getQuestionPage(q) != 0, "Cannot have page 0 assigned for question %zu", q);

if (Global::db()->getQuestionPage(q) < 0)

{

GINFODIALOG(QString("Cannot render PDF because question %1 does not have a page assigned").arg(q+1));

return;

}

if (Global::db()->getQuestionPage(q) == ((int)p+1))

{

if (student.getGrade(q) < 0)

{

GINFODIALOG(QString("Cannot render PDF for student [%1] because question %2 has no grade assigned").arg(student.getStudentName()).arg(q+1));

return;

}

pageTotal += student.getGrade(q);

pageMax += Global::db()->getQuestionMaximum(q);

grades += QString(" Q%1 = %2/%3").arg(q+1).arg(student.getGrade(q)).arg(Global::db()->getQuestionMaximum(q));

if (student.getFeedback(q) != "")

grades += QString(" [%1]").arg(student.getFeedback(q));

}

}

grades += QString(" Totals = %1/%2").arg(pageTotal).arg(pageMax);

if (pageMax == 0)

grades = QString("No Results For This Page");

// Wrap the text to fit a bounding box that is the width of the page, align to the bottom of the page

painter.drawText(0, 30, printer.pageRect().width(), printer.pageRect().height()-30, Qt::TextWordWrap | Qt::AlignBottom, grades);

// Insert a new page except on the last one

if (p < getNumPagesPerStudent()-1)

if (!printer.newPage()) // Check for errors here

GFATAL("Failed to do newPage() call");

}

painter.end();

}

Global::getStatusLabel()->setText("");

{

GASSERT(_db != NULL, "Cannot save empty database");

QFile fd (filename);

if (!fd.open(QIODevice::WriteOnly))

GEXITDIALOG("Could not open project file for writing " + filename);

QTextStream file (&fd);

file << "VERSION=" << DB_VERSION << "\n";

file << "IMAGE_PATH=.\n"; // Images are always in the same directory as the project file

file << "QUESTIONS_PER_STUDENT=" << Global::db()->getNumQuestions() << "\n";

GASSERT(_numPagesPerStudent > 0, "_numPagesPerStudent %zu is not valid", _numPagesPerStudent);

file << "PAGES_PER_STUDENT=" << _numPagesPerStudent << "\n";

file << "TOTAL_STUDENTS=" << Global::db()->getNumStudents() << "\n";

file << "SAVE_DATE_TIME=" << QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss") << "\n";

file << "NUM_IMAGES=" << Global::getPages()->size() << "\n";

if (Global::getPages()->size() != Global::db()->getNumStudents() * _numPagesPerStudent)

{

GDEBUG("Detected mismatch in number of pages %zu, number of students %zu, and number of pages per student %zu",

Global::getPages()->size(), Global::db()->getNumStudents(), _numPagesPerStudent);

GINFODIALOG("Detected page mismatch during save, but will continue anyway");

}

file << "-2\tPAGE\tPAGE\t" << -1;

for (size_t q = 0; q < Global::db()->getNumQuestions(); q++)

file << "\t" << Global::db()->getQuestionPage(q);

for (size_t q = 0; q < Global::db()->getNumQuestions(); q++)

file << "\t" << "NF"; // Emit empty feedback columns

file << "\n";

file << "-1\tMAX\tMAX\t" << Global::db()->getTotalMaximum();

for (size_t q = 0; q < Global::db()->getNumQuestions(); q++)

file << "\t" << Global::db()->getQuestionMaximum(q);

for (size_t q = 0; q < Global::db()->getNumQuestions(); q++)

file << "\t" << "NF"; // Emit empty feedback columns

file << "\n";

for (size_t s = 0; s < Global::db()->getNumStudents(); s++)

{

Student& student = Global::db()->getStudent(s);

file << s << "\t" << student.getStudentId() << "\t" << student.getStudentName();

file << "\t" << student.getTotal();

for (size_t q = 0; q < Global::db()->getNumQuestions(); q++)

file << "\t" << student.getGrade(q);

for (size_t q = 0; q < Global::db()->getNumQuestions(); q++)

file << "\t" << student.getFeedback(q);

file << "\n";

}

// Verify that the write actually worked ok

fd.flush();

if (fd.error() != QFile::NoError)

GINFODIALOG ("Failed to write out complete project file - will not exit, but you need to re-save your work!");

fd.close();

// TODO: We could also dump out the Qt table as well as a backup in a different file

{

GASSERT(_db == NULL, "Cannot initialize database twice");

QFile fd (filename);

if (!fd.open(QIODevice::ReadOnly))

GEXITDIALOG("Could not open project file for reading " + filename);

QTextStream file (&fd);

// The first five lines contain the following information

// VERSION=%s

// IMAGE_PATH=%s

// QUESTIONS_PER_STUDENT=%d

// PAGES_PER_STUDENT=%d

// TOTAL_STUDENTS=%d

// SAVE_DATE_TIME=%s

// NUM_IMAGES=%d

struct _keyvalue { QString key; QString string; size_t number; };

_keyvalue intro[7];

QString header_names[7] = { "VERSION", "IMAGE_PATH", "QUESTIONS_PER_STUDENT", "PAGES_PER_STUDENT", "TOTAL_STUDENTS", "SAVE_DATE_TIME", "NUM_IMAGES" };

bool expect_numbers[7] = { false, false, true, true, true, false, true };

for (size_t i = 0; i < 7; i++)

{

if (file.atEnd())

GEXITDIALOG(QString("Encountered end of file reading line %1").arg(i));

QString in = file.readLine();

QStringList fields = in.split("=");

if (fields.size() != 2)

GEXITDIALOG(QString("Could not find key/value pair separated by = in [%1] reading line %2").arg(in).arg(i));

intro[i].key = fields.at(0);

if (header_names[i] != fields.at(0))

GEXITDIALOG(QString("Line %1 header was not [%2] but found instead [%3]").arg(i).arg(header_names[i]).arg(intro[i].key));

intro[i].string = fields.at(1);

if (fields.at(0).size() == 0)

GEXITDIALOG(QString("Key in [%1] was empty reading line %2").arg(in).arg(i));

if (fields.at(1).size() == 0)

GEXITDIALOG(QString("Value in [%1] was empty reading line %2").arg(in).arg(i));

intro[i].number = -1;

if (expect_numbers[i])

{

bool ok;

int num = fields.at(1).toInt(&ok);

if (!ok)

GEXITDIALOG(QString("Value [%1] in [%2] was not an integer").arg(fields.at(1)).arg(in));

if (num <= 0)

GEXITDIALOG(QString("Value [%1] in [%2] was not a positive integer").arg(fields.at(1)).arg(in));

intro[i].number = num;

}

if (expect_numbers[i])

GDEBUG ("Parsed key [%s] = number [%zu]", qPrintable(intro[i].key), intro[i].number);

else

GDEBUG ("Parsed key [%s] = string [%s]", qPrintable(intro[i].key), qPrintable(intro[i].string));

}

QString version = intro[0].string;

QString image_path = intro[1].string;

size_t numQuestions = intro[2].number;

size_t numPagesPerStudent = intro[3].number;

size_t numStudents = intro[4].number;

QString unused_date_time = intro[5].string;

size_t numImages = intro[6].number;

// Initialize the database since we know all the dimensions now

initDatabase(numStudents, numQuestions, numPagesPerStudent);

// Check the version is what we are expecting

if (version != DB_VERSION)

GEXITDIALOG(QString("Found version [%1] when only version [%2] is supported").arg(version).arg(DB_VERSION));

// Image paths should always be . right now, nothing else is supported

if (image_path != ".")

GEXITDIALOG("Non-empty path found for image loading");

int slash = filename.lastIndexOf("/");

if (slash < 0)

GEXITDIALOG("Could not find ending slash in file name");

QString full_image_path = filename.left(slash);

GDEBUG("Using image path [%s] from input file [%s]", qPrintable(full_image_path), qPrintable(filename));

initPages(full_image_path);

// Check that the number of images loaded matches what we are expecting

GDEBUG ("Loaded in %zu images from [%s], input file says %zu images", getPages()->size(), qPrintable(image_path), numImages);

if (getPages()->size() != numImages)

GEXITDIALOG(QString("Found different number of images than was used for the save"));

// Now populate the database. Each entry is of the following form:

// IDNUM,STUDENTID,STUDENTNAME,TOTAL,Q0,Q1,..,QN,Feed0,Feed1,..,FeedN

// All fields will contain something except for Feed0..FeedN

for (int student = -2; student < (int)numStudents; student++)

{

if (file.atEnd())

GEXITDIALOG(QString("Encountered end of file reading student %1 of %2").arg(student+1).arg(numStudents));

QString in = file.readLine();

QStringList fields = in.split("\t");

if (fields.size() != (2*(int)numQuestions + 4))

GEXITDIALOG(QString("Found only %1 columns in [%2] for student %3 of %4 when expected 2x%5+4 columns").arg(fields.size()).arg(in).arg(student+1).arg(numStudents).arg(numQuestions));

for (size_t col = 4; col < numQuestions+4; col++) // Do not search student id/name, or any feedback, since these can be empty

if (fields.at(col) == "")

GEXITDIALOG(QString("Found empty column %1 for student %3 of %4").arg(col+1).arg(student+1).arg(numStudents));

bool ok;

{

int num = fields.at(0).toInt(&ok);

if ((!ok) || (num != student))

GEXITDIALOG(QString("Expected row number %1 but found [%2] instead for student %3 of %4").arg(student).arg(fields.at(0)).arg(student+1).arg(numStudents));

}

if (student == -2)

{

if ((fields.at(1) != "PAGE") && (fields.at(2) != "PAGE"))

GEXITDIALOG(QString("Expected PAGE headers for first row of data, but found [%1] [%2] instead").arg(fields.at(1).arg(fields.at(2))));

for (size_t q = 0; q < numQuestions; q++)

{

int page = fields.at(q+4).toInt(&ok);

if ((!ok) || (page < -1))

GEXITDIALOG(QString("Page value [%1] for question %2 was not valid for maximum values").arg(fields.at(q+4)).arg(q+1));

Global::db()->setQuestionPage(q, page, false);

}

int total = fields.at(3).toInt(&ok);

if ((!ok) || (total != -1))

GEXITDIALOG(QString("Page total in file [%1] was not -1").arg(fields.at(3)));

}

else if (student == -1)

{

if ((fields.at(1) != "MAX") && (fields.at(2) != "MAX"))

GEXITDIALOG(QString("Expected MAX headers for first row of data, but found [%1] [%2] instead").arg(fields.at(1).arg(fields.at(2))));

for (size_t q = 0; q < numQuestions; q++)

{

int score = fields.at(q+4).toInt(&ok);

if ((!ok) || (score < -1))

GEXITDIALOG(QString("Score value [%1] for question %2 was not valid for maximum values").arg(fields.at(q+4)).arg(q+1));

Global::db()->setQuestionMaximum(q, score, false);

}

int total = fields.at(3).toInt(&ok);

if ((!ok) || (total != Global::db()->getTotalMaximum()))

GEXITDIALOG(QString("Maximum total in file [%1] did not match calculated maximum total %2").arg(fields.at(3)).arg(Global::db()->getTotalMaximum()));

}

else

{

Student &entry = Global::db()->getStudent(student);

entry.setStudentId(fields.at(1), false);

entry.setStudentName(fields.at(2), false);

for (size_t q = 0; q < numQuestions; q++)

{

int score = fields.at(q+4).toInt(&ok);

if ((!ok) || (score < -1) || (score > Global::db()->getQuestionMaximum(q)))

GEXITDIALOG(QString("Score value [%1] for question %2 was not valid student %3 of %4").arg(fields.at(q+4)).arg(q+1).arg(student+1).arg(numStudents));

entry.setGrade(q, score, false);

}

for (size_t q = 0; q < numQuestions; q++)

entry.setFeedback(q, fields.at(q+4+numQuestions), false);

int total = fields.at(3).toInt(&ok);

if ((!ok) || (total != entry.getTotal()))

GEXITDIALOG(QString("Total in file [%1] did not match calculated total %2").arg(fields.at(3)).arg(entry.getTotal()));

}

}