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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QtWidgets>
++
++ #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->setContentsMargins(5, 5, 5, 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]
++ #ifndef QT_NO_CONTEXTMENU
++ void MainWindow::contextMenuEvent(QContextMenuEvent *event)
++ {
++ QMenu menu(this);
++ menu.addAction(cutAct);
++ menu.addAction(copyAct);
++ menu.addAction(pasteAct);
++ menu.exec(event->globalPos());
++ }
++ #endif // QT_NO_CONTEXTMENU
++ //! [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(QIcon::fromTheme(QIcon::ThemeIcon::DocumentNew),
++ tr("&New"), this);
++ newAct->setShortcuts(QKeySequence::New);
++ newAct->setStatusTip(tr("Create a new file"));
++ connect(newAct, &QAction::triggered, this, &MainWindow::newFile);
++ //! [4]
++
++ openAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::DocumentOpen),
++ tr("&Open..."), this);
++ openAct->setShortcuts(QKeySequence::Open);
++ openAct->setStatusTip(tr("Open an existing file"));
++ connect(openAct, &QAction::triggered, this, &MainWindow::open);
++ //! [5]
++
++ saveAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::DocumentSave),
++ tr("&Save"), this);
++ saveAct->setShortcuts(QKeySequence::Save);
++ saveAct->setStatusTip(tr("Save the document to disk"));
++ connect(saveAct, &QAction::triggered, this, &MainWindow::save);
++
++ printAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::DocumentPrint),
++ tr("&Print..."), this);
++ printAct->setShortcuts(QKeySequence::Print);
++ printAct->setStatusTip(tr("Print the document"));
++ connect(printAct, &QAction::triggered, this, &MainWindow::print);
++
++ exitAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::ApplicationExit),
++ tr("E&xit"), this);
++ exitAct->setShortcuts(QKeySequence::Quit);
++ exitAct->setStatusTip(tr("Exit the application"));
++ connect(exitAct, &QAction::triggered, this, &QWidget::close);
++
++ undoAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::EditUndo),
++ tr("&Undo"), this);
++ undoAct->setShortcuts(QKeySequence::Undo);
++ undoAct->setStatusTip(tr("Undo the last operation"));
++ connect(undoAct, &QAction::triggered, this, &MainWindow::undo);
++
++ redoAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::EditRedo),
++ tr("&Redo"), this);
++ redoAct->setShortcuts(QKeySequence::Redo);
++ redoAct->setStatusTip(tr("Redo the last operation"));
++ connect(redoAct, &QAction::triggered, this, &MainWindow::redo);
++
++ cutAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::EditCut),
++ tr("Cu&t"), this);
++ cutAct->setShortcuts(QKeySequence::Cut);
++ cutAct->setStatusTip(tr("Cut the current selection's contents to the "
++ "clipboard"));
++ connect(cutAct, &QAction::triggered, this, &MainWindow::cut);
++
++ copyAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::EditCopy),
++ tr("&Copy"), this);
++ copyAct->setShortcuts(QKeySequence::Copy);
++ copyAct->setStatusTip(tr("Copy the current selection's contents to the "
++ "clipboard"));
++ connect(copyAct, &QAction::triggered, this, &MainWindow::copy);
++
++ pasteAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::EditPaste),
++ tr("&Paste"), this);
++ pasteAct->setShortcuts(QKeySequence::Paste);
++ pasteAct->setStatusTip(tr("Paste the clipboard's contents into the current "
++ "selection"));
++ connect(pasteAct, &QAction::triggered, this, &MainWindow::paste);
++
++ boldAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::FormatTextBold),
++ tr("&Bold"), this);
++ boldAct->setCheckable(true);
++ boldAct->setShortcut(QKeySequence::Bold);
++ boldAct->setStatusTip(tr("Make the text bold"));
++ connect(boldAct, &QAction::triggered, this, &MainWindow::bold);
++
++ QFont boldFont = boldAct->font();
++ boldFont.setBold(true);
++ boldAct->setFont(boldFont);
++
++ italicAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::FormatTextItalic),
++ tr("&Italic"), this);
++ italicAct->setCheckable(true);
++ italicAct->setShortcut(QKeySequence::Italic);
++ italicAct->setStatusTip(tr("Make the text italic"));
++ connect(italicAct, &QAction::triggered, this, &MainWindow::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, &QAction::triggered, this, &MainWindow::setLineSpacing);
++
++ setParagraphSpacingAct = new QAction(tr("Set &Paragraph Spacing..."), this);
++ setParagraphSpacingAct->setStatusTip(tr("Change the gap between paragraphs"));
++ connect(setParagraphSpacingAct, &QAction::triggered,
++ this, &MainWindow::setParagraphSpacing);
++
++ aboutAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::HelpAbout),
++ tr("&About"), this);
++ aboutAct->setStatusTip(tr("Show the application's About box"));
++ connect(aboutAct, &QAction::triggered, this, &MainWindow::about);
++
++ aboutQtAct = new QAction(tr("About &Qt"), this);
++ aboutQtAct->setStatusTip(tr("Show the Qt library's About box"));
++ connect(aboutQtAct, &QAction::triggered, qApp, &QApplication::aboutQt);
++ connect(aboutQtAct, &QAction::triggered, this, &MainWindow::aboutQt);
++
++ leftAlignAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::FormatJustifyLeft),
++ tr("&Left Align"), this);
++ leftAlignAct->setCheckable(true);
++ leftAlignAct->setShortcut(tr("Ctrl+L"));
++ leftAlignAct->setStatusTip(tr("Left align the selected text"));
++ connect(leftAlignAct, &QAction::triggered, this, &MainWindow::leftAlign);
++
++ rightAlignAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::FormatJustifyRight),
++ tr("&Right Align"), this);
++ rightAlignAct->setCheckable(true);
++ rightAlignAct->setShortcut(tr("Ctrl+R"));
++ rightAlignAct->setStatusTip(tr("Right align the selected text"));
++ connect(rightAlignAct, &QAction::triggered, this, &MainWindow::rightAlign);
++
++ justifyAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::FormatJustifyFill),
++ tr("&Justify"), this);
++ justifyAct->setCheckable(true);
++ justifyAct->setShortcut(tr("Ctrl+J"));
++ justifyAct->setStatusTip(tr("Justify the selected text"));
++ connect(justifyAct, &QAction::triggered, this, &MainWindow::justify);
++
++ centerAct = new QAction(QIcon::fromTheme(QIcon::ThemeIcon::FormatJustifyCenter),
++ tr("&Center"), this);
++ centerAct->setCheckable(true);
++ centerAct->setShortcut(tr("Ctrl+E"));
++ centerAct->setStatusTip(tr("Center the selected text"));
++ connect(centerAct, &QAction::triggered, this, &MainWindow::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]