Qt Reference Documentation

# softkeys.cpp Example File

widgets/softkeys/softkeys.cpp

     /****************************************************************************
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     ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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     ** This file is part of the examples of the Qt Toolkit.
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     #include "softkeys.h"

     MainWindow::MainWindow(QWidget *parent)
         : QMainWindow(parent)
     {
         central = new QWidget(this);
         central->setContextMenuPolicy(Qt::NoContextMenu); // explicitly forbid usage of context menu so actions item is not shown menu
         setCentralWidget(central);

         // Create text editor and set softkeys to it
         textEditor= new QTextEdit(tr("Navigate in UI to see context sensitive softkeys in action"), this);
         QAction* clear = new QAction(tr("Clear"), this);
         clear->setSoftKeyRole(QAction::NegativeSoftKey);

         textEditor->addAction(clear);

         ok = new QAction(tr("Ok"), this);
         ok->setSoftKeyRole(QAction::PositiveSoftKey);
         connect(ok, SIGNAL(triggered()), this, SLOT(okPressed()));

         cancel = new QAction(tr("Cancel"), this);
         cancel->setSoftKeyRole(QAction::NegativeSoftKey);
         connect(cancel, SIGNAL(triggered()), this, SLOT(cancelPressed()));

         infoLabel = new QLabel(tr(""), this);
         infoLabel->setContextMenuPolicy(Qt::NoContextMenu);

         toggleButton = new QPushButton(tr("Custom"), this);
         toggleButton->setContextMenuPolicy(Qt::NoContextMenu);
         toggleButton->setCheckable(true);

         modeButton = new QPushButton(tr("Loop SK window type"), this);
         modeButton->setContextMenuPolicy(Qt::NoContextMenu);

         modeLabel = new QLabel(tr("Normal maximized"), this);
         modeLabel->setContextMenuPolicy(Qt::NoContextMenu);

         pushButton = new QPushButton(tr("File Dialog"), this);
         pushButton->setContextMenuPolicy(Qt::NoContextMenu);

         QComboBox* comboBox = new QComboBox(this);
         comboBox->setContextMenuPolicy(Qt::NoContextMenu);
         comboBox->insertItems(0, QStringList()
          << QApplication::translate("MainWindow", "Selection1", 0, QApplication::UnicodeUTF8)
          << QApplication::translate("MainWindow", "Selection2", 0, QApplication::UnicodeUTF8)
          << QApplication::translate("MainWindow", "Selection3", 0, QApplication::UnicodeUTF8)
         );

         layout = new QGridLayout;
         layout->addWidget(textEditor, 0, 0, 1, 2);
         layout->addWidget(infoLabel, 1, 0, 1, 2);
         layout->addWidget(toggleButton, 2, 0);
         layout->addWidget(pushButton, 2, 1);
         layout->addWidget(comboBox, 3, 0, 1, 2);
         layout->addWidget(modeButton, 4, 0, 1, 2);
         layout->addWidget(modeLabel, 5, 0, 1, 2);
         central->setLayout(layout);

         fileMenu = menuBar()->addMenu(tr("&File"));
         exit = new QAction(tr("&Exit"), this);
         fileMenu->addAction(exit);

         connect(clear, SIGNAL(triggered()), this, SLOT(clearTextEditor()));
         connect(pushButton, SIGNAL(clicked()), this, SLOT(openDialog()));
         connect(exit, SIGNAL(triggered()), this, SLOT(exitApplication()));
         connect(toggleButton, SIGNAL(clicked()), this, SLOT(setCustomSoftKeys()));
         connect(modeButton, SIGNAL(clicked()), this, SLOT(setMode()));
         pushButton->setFocus();
     }

     MainWindow::~MainWindow()
     {
     }

     void MainWindow::clearTextEditor()
     {
         textEditor->setText(tr(""));
     }

     void MainWindow::openDialog()
     {
         QFileDialog::getOpenFileName(this);
     }

     void MainWindow::addSoftKeys()
     {
         addAction(ok);
         addAction(cancel);
     }

     void MainWindow::setCustomSoftKeys()
     {
         if (toggleButton->isChecked()) {
             infoLabel->setText(tr("Custom softkeys set"));
             addSoftKeys();
             }
         else {
             infoLabel->setText(tr("Custom softkeys removed"));
             removeAction(ok);
             removeAction(cancel);
         }
     }

     void MainWindow::setMode()
     {
         if(isMaximized()) {
             showFullScreen();
             modeLabel->setText(tr("Normal Fullscreen"));
         } else {
             Qt::WindowFlags flags = windowFlags();
             if(flags & Qt::WindowSoftkeysRespondHint) {
                 flags |= Qt::WindowSoftkeysVisibleHint;
                 flags &= ~Qt::WindowSoftkeysRespondHint;
                 setWindowFlags(flags); // Hides visible window
                 showFullScreen();
                 modeLabel->setText(tr("Fullscreen with softkeys"));
             } else if(flags & Qt::WindowSoftkeysVisibleHint) {
                 flags &= ~Qt::WindowSoftkeysVisibleHint;
                 flags &= ~Qt::WindowSoftkeysRespondHint;
                 setWindowFlags(flags); // Hides visible window
                 showMaximized();
                 modeLabel->setText(tr("Normal Maximized"));
             } else {
                 flags &= ~Qt::WindowSoftkeysVisibleHint;
                 flags |= Qt::WindowSoftkeysRespondHint;
                 setWindowFlags(flags); // Hides visible window
                 showFullScreen();
                 modeLabel->setText(tr("Fullscreen with SK respond"));
             }
         }
     }

     void MainWindow::exitApplication()
     {
         qApp->exit();
     }

     void MainWindow::okPressed()
     {
         infoLabel->setText(tr("OK pressed"));
     }

     void MainWindow::cancelPressed()
     {
         infoLabel->setText(tr("Cancel pressed"));
     }