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#include <QtGui>

#include "mainwindow.h"

//! [0]

MainWindow::MainWindow()

{

    QWidget *widget = new QWidget;

    setCentralWidget(widget);

//! [0]

//! [1]

    QWidget *topFiller = new QWidget;

    topFiller->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

    infoLabel = new QLabel(tr("<i>Choose a menu option, or right-click to "

                              "invoke a context menu</i>"));

    infoLabel->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);

    infoLabel->setAlignment(Qt::AlignCenter);

    QWidget *bottomFiller = new QWidget;

    bottomFiller->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

    QVBoxLayout *layout = new QVBoxLayout;

    layout->setMargin(5);

    layout->addWidget(topFiller);

    layout->addWidget(infoLabel);

    layout->addWidget(bottomFiller);

    widget->setLayout(layout);

//! [1]

//! [2]

    createActions();

    createMenus();

    QString message = tr("A context menu is available by right-clicking");

    statusBar()->showMessage(message);

    setWindowTitle(tr("Menus"));

    setMinimumSize(160, 160);

    resize(480, 320);

}

//! [2]

//! [3]

void MainWindow::contextMenuEvent(QContextMenuEvent *event)

{

    QMenu menu(this);

    menu.addAction(cutAct);

    menu.addAction(copyAct);

    menu.addAction(pasteAct);

    menu.exec(event->globalPos());

}

//! [3]

void MainWindow::newFile()

{

    infoLabel->setText(tr("Invoked <b>File|New</b>"));

}

void MainWindow::open()

{

    infoLabel->setText(tr("Invoked <b>File|Open</b>"));

}

void MainWindow::save()

{

    infoLabel->setText(tr("Invoked <b>File|Save</b>"));

}

void MainWindow::print()

{

    infoLabel->setText(tr("Invoked <b>File|Print</b>"));

}

void MainWindow::undo()

{

    infoLabel->setText(tr("Invoked <b>Edit|Undo</b>"));

}

void MainWindow::redo()

{

    infoLabel->setText(tr("Invoked <b>Edit|Redo</b>"));

}

void MainWindow::cut()

{

    infoLabel->setText(tr("Invoked <b>Edit|Cut</b>"));

}

void MainWindow::copy()

{

    infoLabel->setText(tr("Invoked <b>Edit|Copy</b>"));

}

void MainWindow::paste()

{

    infoLabel->setText(tr("Invoked <b>Edit|Paste</b>"));

}

void MainWindow::bold()

{

    infoLabel->setText(tr("Invoked <b>Edit|Format|Bold</b>"));

}

void MainWindow::italic()

{

    infoLabel->setText(tr("Invoked <b>Edit|Format|Italic</b>"));

}

void MainWindow::leftAlign()

{

    infoLabel->setText(tr("Invoked <b>Edit|Format|Left Align</b>"));

}

void MainWindow::rightAlign()

{

    infoLabel->setText(tr("Invoked <b>Edit|Format|Right Align</b>"));

}

void MainWindow::justify()

{

    infoLabel->setText(tr("Invoked <b>Edit|Format|Justify</b>"));

}

void MainWindow::center()

{

    infoLabel->setText(tr("Invoked <b>Edit|Format|Center</b>"));

}

void MainWindow::setLineSpacing()

{

    infoLabel->setText(tr("Invoked <b>Edit|Format|Set Line Spacing</b>"));

}

void MainWindow::setParagraphSpacing()

{

    infoLabel->setText(tr("Invoked <b>Edit|Format|Set Paragraph Spacing</b>"));

}

void MainWindow::about()

{

    infoLabel->setText(tr("Invoked <b>Help|About</b>"));

    QMessageBox::about(this, tr("About Menu"),

            tr("The <b>Menu</b> example shows how to create "

               "menu-bar menus and context menus."));

}

void MainWindow::aboutQt()

{

    infoLabel->setText(tr("Invoked <b>Help|About Qt</b>"));

}

//! [4]

void MainWindow::createActions()

{

//! [5]

    newAct = new QAction(tr("&New"), this);

    newAct->setShortcuts(QKeySequence::New);

    newAct->setStatusTip(tr("Create a new file"));

    connect(newAct, SIGNAL(triggered()), this, SLOT(newFile()));

//! [4]

    openAct = new QAction(tr("&Open..."), this);

    openAct->setShortcuts(QKeySequence::Open);

    openAct->setStatusTip(tr("Open an existing file"));

    connect(openAct, SIGNAL(triggered()), this, SLOT(open()));

//! [5]

    saveAct = new QAction(tr("&Save"), this);

    saveAct->setShortcuts(QKeySequence::Save);

    saveAct->setStatusTip(tr("Save the document to disk"));

    connect(saveAct, SIGNAL(triggered()), this, SLOT(save()));

    printAct = new QAction(tr("&Print..."), this);

    printAct->setShortcuts(QKeySequence::Print);

    printAct->setStatusTip(tr("Print the document"));

    connect(printAct, SIGNAL(triggered()), this, SLOT(print()));

    exitAct = new QAction(tr("E&xit"), this);

    exitAct->setShortcuts(QKeySequence::Quit);

    exitAct->setStatusTip(tr("Exit the application"));

    connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));

    undoAct = new QAction(tr("&Undo"), this);

    undoAct->setShortcuts(QKeySequence::Undo);

    undoAct->setStatusTip(tr("Undo the last operation"));

    connect(undoAct, SIGNAL(triggered()), this, SLOT(undo()));

    redoAct = new QAction(tr("&Redo"), this);

    redoAct->setShortcuts(QKeySequence::Redo);

    redoAct->setStatusTip(tr("Redo the last operation"));

    connect(redoAct, SIGNAL(triggered()), this, SLOT(redo()));

    cutAct = new QAction(tr("Cu&t"), this);

    cutAct->setShortcuts(QKeySequence::Cut);

    cutAct->setStatusTip(tr("Cut the current selection's contents to the "

                            "clipboard"));

    connect(cutAct, SIGNAL(triggered()), this, SLOT(cut()));

    copyAct = new QAction(tr("&Copy"), this);

    copyAct->setShortcuts(QKeySequence::Copy);

    copyAct->setStatusTip(tr("Copy the current selection's contents to the "

                             "clipboard"));

    connect(copyAct, SIGNAL(triggered()), this, SLOT(copy()));

    pasteAct = new QAction(tr("&Paste"), this);

    pasteAct->setShortcuts(QKeySequence::Paste);

    pasteAct->setStatusTip(tr("Paste the clipboard's contents into the current "

                              "selection"));

    connect(pasteAct, SIGNAL(triggered()), this, SLOT(paste()));

    boldAct = new QAction(tr("&Bold"), this);

    boldAct->setCheckable(true);

    boldAct->setShortcut(QKeySequence::Bold);

    boldAct->setStatusTip(tr("Make the text bold"));

    connect(boldAct, SIGNAL(triggered()), this, SLOT(bold()));

    QFont boldFont = boldAct->font();

    boldFont.setBold(true);

    boldAct->setFont(boldFont);

    italicAct = new QAction(tr("&Italic"), this);

    italicAct->setCheckable(true);

    italicAct->setShortcut(QKeySequence::Italic);

    italicAct->setStatusTip(tr("Make the text italic"));

    connect(italicAct, SIGNAL(triggered()), this, SLOT(italic()));

    QFont italicFont = italicAct->font();

    italicFont.setItalic(true);

    italicAct->setFont(italicFont);

    setLineSpacingAct = new QAction(tr("Set &Line Spacing..."), this);

    setLineSpacingAct->setStatusTip(tr("Change the gap between the lines of a "

                                       "paragraph"));

    connect(setLineSpacingAct, SIGNAL(triggered()), this, SLOT(setLineSpacing()));

    setParagraphSpacingAct = new QAction(tr("Set &Paragraph Spacing..."), this);

    setLineSpacingAct->setStatusTip(tr("Change the gap between paragraphs"));

    connect(setParagraphSpacingAct, SIGNAL(triggered()),

            this, SLOT(setParagraphSpacing()));

    aboutAct = new QAction(tr("&About"), this);

    aboutAct->setStatusTip(tr("Show the application's About box"));

    connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));

    aboutQtAct = new QAction(tr("About &Qt"), this);

    aboutQtAct->setStatusTip(tr("Show the Qt library's About box"));

    connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));

    connect(aboutQtAct, SIGNAL(triggered()), this, SLOT(aboutQt()));

    leftAlignAct = new QAction(tr("&Left Align"), this);

    leftAlignAct->setCheckable(true);

    leftAlignAct->setShortcut(tr("Ctrl+L"));

    leftAlignAct->setStatusTip(tr("Left align the selected text"));

    connect(leftAlignAct, SIGNAL(triggered()), this, SLOT(leftAlign()));

    rightAlignAct = new QAction(tr("&Right Align"), this);

    rightAlignAct->setCheckable(true);

    rightAlignAct->setShortcut(tr("Ctrl+R"));

    rightAlignAct->setStatusTip(tr("Right align the selected text"));

    connect(rightAlignAct, SIGNAL(triggered()), this, SLOT(rightAlign()));

    justifyAct = new QAction(tr("&Justify"), this);

    justifyAct->setCheckable(true);

    justifyAct->setShortcut(tr("Ctrl+J"));

    justifyAct->setStatusTip(tr("Justify the selected text"));

    connect(justifyAct, SIGNAL(triggered()), this, SLOT(justify()));

    centerAct = new QAction(tr("&Center"), this);

    centerAct->setCheckable(true);

    centerAct->setShortcut(tr("Ctrl+E"));

    centerAct->setStatusTip(tr("Center the selected text"));

    connect(centerAct, SIGNAL(triggered()), this, SLOT(center()));

//! [6] //! [7]

    alignmentGroup = new QActionGroup(this);

    alignmentGroup->addAction(leftAlignAct);

    alignmentGroup->addAction(rightAlignAct);

    alignmentGroup->addAction(justifyAct);

    alignmentGroup->addAction(centerAct);

    leftAlignAct->setChecked(true);

//! [6]

}

//! [7]

//! [8]

void MainWindow::createMenus()

{

//! [9] //! [10]

    fileMenu = menuBar()->addMenu(tr("&File"));

    fileMenu->addAction(newAct);

//! [9]

    fileMenu->addAction(openAct);

//! [10]

    fileMenu->addAction(saveAct);

    fileMenu->addAction(printAct);

//! [11]

    fileMenu->addSeparator();

//! [11]

    fileMenu->addAction(exitAct);

    editMenu = menuBar()->addMenu(tr("&Edit"));

    editMenu->addAction(undoAct);

    editMenu->addAction(redoAct);

    editMenu->addSeparator();

    editMenu->addAction(cutAct);

    editMenu->addAction(copyAct);

    editMenu->addAction(pasteAct);

    editMenu->addSeparator();

    helpMenu = menuBar()->addMenu(tr("&Help"));

    helpMenu->addAction(aboutAct);

    helpMenu->addAction(aboutQtAct);

//! [8]

//! [12]

    formatMenu = editMenu->addMenu(tr("&Format"));

    formatMenu->addAction(boldAct);

    formatMenu->addAction(italicAct);

    formatMenu->addSeparator()->setText(tr("Alignment"));

    formatMenu->addAction(leftAlignAct);

    formatMenu->addAction(rightAlignAct);

    formatMenu->addAction(justifyAct);

    formatMenu->addAction(centerAct);

    formatMenu->addSeparator();

    formatMenu->addAction(setLineSpacingAct);

    formatMenu->addAction(setParagraphSpacingAct);

}

//! [12]