path: root/src/mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
 #include <QMessageBox>

// ____________________________________________________________________________
MainWindow::MainWindow(char *argv[], QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow),
    user(argv[1]),
    file(argv[2]) {
  // Initialize cups
  num_dests = cupsGetDests(&dests);

  // Initialize UI
  initializeUI();
}

// ____________________________________________________________________________
MainWindow::~MainWindow() {
  cupsFreeDests(num_dests, dests);
  delete ui;
}

// ____________________________________________________________________________
void MainWindow::initializeUI() {
  ui->setupUi(this);
  ui->horizontalLayoutButtons->setAlignment(Qt::AlignRight);

  /*  Initialize Treeview  */

  ui->printerList->setColumnCount(3);
  ui->printerList->setSizePolicy(QSizePolicy::Minimum,QSizePolicy::Minimum);

  // Rename headers
  QStringList h;
  h.append("Drucker");
  h.append("Information");
  h.append("Standort");
  ui->printerList->setHeaderLabels(h);

  // Fill treewidget with data from cups dests;
  cups_dest_t *dest = dests;
  for (int i = num_dests; i>0; ++dest, --i )
    if (dest->instance == NULL) {
      QTreeWidgetItem *wi = new QTreeWidgetItem();
      wi->setText(0, QString(dest->name));
      wi->setText(1, QString(cupsGetOption("printer-info", dest->num_options, dest->options)));
      wi->setText(2, QString(cupsGetOption("printer-location", dest->num_options, dest->options)));
      ui->printerList->addTopLevelItem(wi);
      if (dest->is_default)
        ui->printerList->setCurrentItem(wi);
    }

  // Resize columns to contents
  for (int i = 0; i < 3; ++i)
    ui->printerList->resizeColumnToContents(i);

  /*  Main Window properties  */

  // Disable close button
  this->setWindowFlags(windowFlags() & ~Qt::WindowCloseButtonHint);
  // center dialog on screen center
  QRect desktopRect = QApplication::desktop()->screenGeometry(this);
  this->move( desktopRect.width()/2-this->width()/2,
              desktopRect.height()/2-this->height()/2);
}

// ____________________________________________________________________________
void MainWindow::on_printerList_currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous) {
  ui->printerList->setFocus();

  cups_dest_t *dest =cupsGetNamedDest (CUPS_HTTP_DEFAULT, current->text(0).toAscii(), NULL);


  /* * Check printer properties (auth, color, duplex, copies) * */
  // get printer capabilities
  int res = ::atoi(cupsGetOption("printer-type",
                                 dest->num_options,
                                 dest->options));

  // Check authentication
  if (res & CUPS_PRINTER_AUTHENTICATED) {
    ui->labelUser->setEnabled(true);
    ui->labelPass->setEnabled(true);
    ui->lineEditUser->setEnabled(true);
    ui->lineEditPass->setEnabled(true);
  } else {
    ui->labelUser->setEnabled(false);
    ui->labelPass->setEnabled(false);
    ui->lineEditUser->setEnabled(false);
    ui->lineEditPass->setEnabled(false);
  }

  // Check color capabilities
  if (res & CUPS_PRINTER_COLOR) {
    ui->comboBoxColor->setEnabled(true);
    ui->comboBoxColor->setCurrentIndex(1);
  } else {
    ui->comboBoxColor->setEnabled(false);
    ui->comboBoxColor->setCurrentIndex(0);
  }

  // Check duplex capabilities
  if (res & CUPS_PRINTER_DUPLEX) {
    ui->comboBoxSides->setEnabled(true);
  } else {
    ui->comboBoxSides->setEnabled(false);
    ui->comboBoxSides->setCurrentIndex(0);
  }

  // Check copy capabilities
  if (res & CUPS_PRINTER_COPIES) {
    ui->lineEditCopies->setEnabled(true);
    ui->labelCopies->setEnabled(true);
  } else {
    ui->lineEditCopies->setEnabled(false);
    ui->lineEditCopies->setText("1");
    ui->labelCopies->setEnabled(false);
  }

  // Check availability
  if (res & CUPS_PRINTER_REJECTING) {
    ui->buttonPrint->setEnabled(false);
  } else {
    ui->buttonPrint->setEnabled(true);
  }
}

// ____________________________________________________________________________
void MainWindow::on_buttonCancel_clicked() {
  // Quit with code 1
  QCoreApplication::instance()->exit(1);
}

// ____________________________________________________________________________
void MainWindow::on_buttonPrint_clicked() {
  QString cmd;

  // Wenn Farbe möglich ist. Aber trotzdem Graustufen gewählt
  // Schieb file durch ghostscript
  if (ui->comboBoxColor->isEnabled() && ui->comboBoxColor->currentIndex() == 0) {
    // Run ghostscript to make file grayscale
    cmd = QString("gs -sDEVICE=psgray -dNOPAUSE -dBATCH -dQUIET -dSAFER  -sOutputFile=\"%22\" \"%1\"").arg(
                file,
                file);
    if (system(cmd.toAscii()))
      return; // TODO WARN ABOUT MISSED GS JOB

  }

  /* * Print via cups lib * */

  // Username
  cupsSetUser(user);

  // Destination / Queue
  cups_dest_t *dest = cupsGetDest(
              ui->printerList->currentItem()->text(0).toAscii(),
              NULL,
              num_dests,
              dests);

  // Duplex
  if (ui->comboBoxSides->isEnabled()) {
    switch (ui->comboBoxSides->currentIndex()) {
    case 0:
      dest->num_options = cupsAddOption ("Duplex",
                                         "None",
                                         dest->num_options,
                                         &(dest->options));
      break;
    case 1:
      dest->num_options = cupsAddOption ("Duplex",
                                         "DuplexNoTumble",
                                         dest->num_options,
                                         &(dest->options));
      break;
    case 2:
      dest->num_options = cupsAddOption ("Duplex",
                                         "DuplexTumble",
                                         dest->num_options,
                                         &(dest->options));
      break;
    }
  }

  // Kopien
  if (ui->lineEditCopies->isEnabled()) {
    dest->num_options = cupsAddOption ("copies",
                                       ui->lineEditCopies->text().toAscii(),
                                       dest->num_options,
                                       &(dest->options));
  }

  // Drucken
  if( 0 == cupsPrintFile(dest->name,
                         file,
                         NULL,
                         dest->num_options,
                         dest->options)) {
    QMessageBox msgBox;
    msgBox.setText(cupsLastErrorString());
    msgBox.exec();
  } else // Quit with code 0
    QCoreApplication::instance()->quit();

}


///////////////////////////////  CODE PAPIERKORB  /////////////////////////////

/* * Print via sysctem command * */
//    // Username, part of whoami source
//    register uid_t uid = geteuid();
//    const char *username = getpwuid(uid)->pw_name;
//    cmd = QString("lp -U %1").arg(username);
//    // Duplex
//    if (ui->comboBoxSides->isEnabled())
//    {
//        switch (ui->comboBoxSides->currentIndex()){
//        case 0:
//            cmd.append(" -o sides=one-sided");
//            break;
//        case 1:
//            cmd.append(" -o sides=two-sided-long-edge");
//            break;
//        case 2:
//            cmd.append(" -o sides=two-sided-long-edge");
//            break;
//        }
//    }
//    // Kopien
//    if (ui->lineEditCopies->isEnabled())
//        cmd.append(QString(" -n %1").arg(ui->lineEditCopies->text()));
//    // Queue
//    cmd.append(QString(" -d %1").arg(ui->printerList->currentItem()->text(0)));
//    // File
//    cmd.append(QString(" -- \"%1\"").arg(file));
//    // Print results to stdout
//    QTextStream (stdout, QIODevice::WriteOnly) << cmd;
//    // Execute the command
//    system(cmd.toAscii());