qt 6.5.1 original

examples/widgets/richtext/CMakeLists.txt

@@ -0,0 +1,7 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+qt_internal_add_example(calendar)
+qt_internal_add_example(orderform)
+qt_internal_add_example(syntaxhighlighter)
+qt_internal_add_example(textedit)

examples/widgets/richtext/README

@@ -0,0 +1,11 @@
+Qt provides powerful document-oriented rich text engine that supports Unicode
+and right-to-left scripts. Documents can be manipulated using a cursor-based
+API, and their contents can be imported and exported as both HTML and in a
+custom XML format.
+
+Text is rendered using anti-aliased outline fonts to provide the best
+possible on-screen representation.
+
+
+Documentation for these examples can be found via the Examples
+link in the main Qt documentation.

examples/widgets/richtext/calendar/CMakeLists.txt

@@ -0,0 +1,37 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(calendar LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/richtext/calendar")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(calendar
+    main.cpp
+    mainwindow.cpp mainwindow.h
+)
+
+set_target_properties(calendar PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(calendar PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+install(TARGETS calendar
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/widgets/richtext/calendar/calendar.pro

@@ -0,0 +1,10 @@
+QT += widgets
+requires(qtConfig(combobox))
+
+HEADERS     = mainwindow.h
+SOURCES     = main.cpp \
+              mainwindow.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/richtext/calendar
+INSTALLS += target

examples/widgets/richtext/calendar/main.cpp

@@ -0,0 +1,15 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    MainWindow window;
+    window.resize(640, 256);
+    window.show();
+    return app.exec();
+}

examples/widgets/richtext/calendar/mainwindow.cpp

@@ -0,0 +1,179 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "mainwindow.h"
+
+#include <QtWidgets>
+
+//! [0]
+MainWindow::MainWindow()
+{
+    selectedDate = QDate::currentDate();
+    fontSize = 10;
+
+    QWidget *centralWidget = new QWidget;
+//! [0]
+
+//! [1]
+    QLabel *dateLabel = new QLabel(tr("Date:"));
+    QComboBox *monthCombo = new QComboBox;
+
+    for (int month = 1; month <= 12; ++month)
+        monthCombo->addItem(QLocale::system().monthName(month));
+
+    QDateTimeEdit *yearEdit = new QDateTimeEdit;
+    yearEdit->setDisplayFormat("yyyy");
+    yearEdit->setDateRange(QDate(1753, 1, 1), QDate(8000, 1, 1));
+//! [1]
+
+    monthCombo->setCurrentIndex(selectedDate.month() - 1);
+    yearEdit->setDate(selectedDate);
+
+//! [2]
+    QLabel *fontSizeLabel = new QLabel(tr("Font size:"));
+    QSpinBox *fontSizeSpinBox = new QSpinBox;
+    fontSizeSpinBox->setRange(1, 64);
+
+    editor = new QTextBrowser;
+    insertCalendar();
+//! [2]
+
+//! [3]
+    connect(monthCombo, &QComboBox::activated,
+            this, &MainWindow::setMonth);
+    connect(yearEdit, &QDateTimeEdit::dateChanged,
+            this, &MainWindow::setYear);
+    connect(fontSizeSpinBox, &QSpinBox::valueChanged,
+            this, &MainWindow::setFontSize);
+//! [3]
+
+    fontSizeSpinBox->setValue(10);
+
+//! [4]
+    QHBoxLayout *controlsLayout = new QHBoxLayout;
+    controlsLayout->addWidget(dateLabel);
+    controlsLayout->addWidget(monthCombo);
+    controlsLayout->addWidget(yearEdit);
+    controlsLayout->addSpacing(24);
+    controlsLayout->addWidget(fontSizeLabel);
+    controlsLayout->addWidget(fontSizeSpinBox);
+    controlsLayout->addStretch(1);
+
+    QVBoxLayout *centralLayout = new QVBoxLayout;
+    centralLayout->addLayout(controlsLayout);
+    centralLayout->addWidget(editor, 1);
+    centralWidget->setLayout(centralLayout);
+
+    setCentralWidget(centralWidget);
+//! [4]
+}
+
+//! [5]
+void MainWindow::insertCalendar()
+{
+    editor->clear();
+    QTextCursor cursor = editor->textCursor();
+    cursor.beginEditBlock();
+
+    QDate date(selectedDate.year(), selectedDate.month(), 1);
+//! [5]
+
+//! [6]
+    QTextTableFormat tableFormat;
+    tableFormat.setAlignment(Qt::AlignHCenter);
+    tableFormat.setBackground(QColor("#e0e0e0"));
+    tableFormat.setCellPadding(2);
+    tableFormat.setCellSpacing(4);
+//! [6] //! [7]
+    QList<QTextLength> constraints;
+    constraints << QTextLength(QTextLength::PercentageLength, 14)
+                << QTextLength(QTextLength::PercentageLength, 14)
+                << QTextLength(QTextLength::PercentageLength, 14)
+                << QTextLength(QTextLength::PercentageLength, 14)
+                << QTextLength(QTextLength::PercentageLength, 14)
+                << QTextLength(QTextLength::PercentageLength, 14)
+                << QTextLength(QTextLength::PercentageLength, 14);
+    tableFormat.setColumnWidthConstraints(constraints);
+//! [7]
+
+//! [8]
+    QTextTable *table = cursor.insertTable(1, 7, tableFormat);
+//! [8]
+
+//! [9]
+    QTextFrame *frame = cursor.currentFrame();
+    QTextFrameFormat frameFormat = frame->frameFormat();
+    frameFormat.setBorder(1);
+    frame->setFrameFormat(frameFormat);
+//! [9]
+
+//! [10]
+    QTextCharFormat format = cursor.charFormat();
+    format.setFontPointSize(fontSize);
+
+    QTextCharFormat boldFormat = format;
+    boldFormat.setFontWeight(QFont::Bold);
+
+    QTextCharFormat highlightedFormat = boldFormat;
+    highlightedFormat.setBackground(Qt::yellow);
+//! [10]
+
+//! [11]
+    for (int weekDay = 1; weekDay <= 7; ++weekDay) {
+        QTextTableCell cell = table->cellAt(0, weekDay-1);
+//! [11] //! [12]
+        QTextCursor cellCursor = cell.firstCursorPosition();
+        cellCursor.insertText(QLocale::system().dayName(weekDay), boldFormat);
+    }
+//! [12]
+
+//! [13]
+    table->insertRows(table->rows(), 1);
+//! [13]
+
+    while (date.month() == selectedDate.month()) {
+        int weekDay = date.dayOfWeek();
+        QTextTableCell cell = table->cellAt(table->rows()-1, weekDay-1);
+        QTextCursor cellCursor = cell.firstCursorPosition();
+
+        if (date == QDate::currentDate())
+            cellCursor.insertText(QString("%1").arg(date.day()), highlightedFormat);
+        else
+            cellCursor.insertText(QString("%1").arg(date.day()), format);
+
+        date = date.addDays(1);
+        if (weekDay == 7 && date.month() == selectedDate.month())
+            table->insertRows(table->rows(), 1);
+    }
+
+    cursor.endEditBlock();
+//! [14]
+    setWindowTitle(tr("Calendar for %1 %2"
+        ).arg(QLocale::system().monthName(selectedDate.month())
+        ).arg(selectedDate.year()));
+}
+//! [14]
+
+//! [15]
+void MainWindow::setFontSize(int size)
+{
+    fontSize = size;
+    insertCalendar();
+}
+//! [15]
+
+//! [16]
+void MainWindow::setMonth(int month)
+{
+    selectedDate = QDate(selectedDate.year(), month + 1, selectedDate.day());
+    insertCalendar();
+}
+//! [16]
+
+//! [17]
+void MainWindow::setYear(QDate date)
+{
+    selectedDate = QDate(date.year(), selectedDate.month(), selectedDate.day());
+    insertCalendar();
+}
+//! [17]

examples/widgets/richtext/calendar/mainwindow.h

@@ -0,0 +1,36 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QDate>
+#include <QMainWindow>
+
+QT_BEGIN_NAMESPACE
+class QTextBrowser;
+QT_END_NAMESPACE
+
+//! [0]
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow();
+
+public slots:
+    void setFontSize(int size);
+    void setMonth(int month);
+    void setYear(QDate date);
+
+private:
+    void insertCalendar();
+
+    int fontSize;
+    QDate selectedDate;
+    QTextBrowser *editor;
+};
+//! [0]
+
+#endif // MAINWINDOW_H

examples/widgets/richtext/orderform/CMakeLists.txt

@@ -0,0 +1,42 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(orderform LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/richtext/orderform")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(orderform
+    detailsdialog.cpp detailsdialog.h
+    main.cpp
+    mainwindow.cpp mainwindow.h
+)
+
+set_target_properties(orderform PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(orderform PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+if(TARGET Qt6::PrintSupport)
+    target_link_libraries(orderform PRIVATE Qt6::PrintSupport)
+endif()
+
+install(TARGETS orderform
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/widgets/richtext/orderform/detailsdialog.cpp

@@ -0,0 +1,119 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QtWidgets>
+
+#include "detailsdialog.h"
+
+//! [0]
+DetailsDialog::DetailsDialog(const QString &title, QWidget *parent)
+    : QDialog(parent)
+{
+    nameLabel = new QLabel(tr("Name:"));
+    addressLabel = new QLabel(tr("Address:"));
+    addressLabel->setAlignment(Qt::AlignLeft | Qt::AlignTop);
+
+    nameEdit = new QLineEdit;
+    addressEdit = new QTextEdit;
+
+    offersCheckBox = new QCheckBox(tr("Send information about products and "
+                                      "special offers"));
+
+    setupItemsTable();
+
+    buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok
+                                     | QDialogButtonBox::Cancel);
+
+    connect(buttonBox, &QDialogButtonBox::accepted, this, &DetailsDialog::verify);
+    connect(buttonBox, &QDialogButtonBox::rejected, this, &DetailsDialog::reject);
+//! [0]
+
+//! [1]
+    QGridLayout *mainLayout = new QGridLayout;
+    mainLayout->addWidget(nameLabel, 0, 0);
+    mainLayout->addWidget(nameEdit, 0, 1);
+    mainLayout->addWidget(addressLabel, 1, 0);
+    mainLayout->addWidget(addressEdit, 1, 1);
+    mainLayout->addWidget(itemsTable, 0, 2, 2, 1);
+    mainLayout->addWidget(offersCheckBox, 2, 1, 1, 2);
+    mainLayout->addWidget(buttonBox, 3, 0, 1, 3);
+    setLayout(mainLayout);
+
+    setWindowTitle(title);
+}
+//! [1]
+
+//! [2]
+void DetailsDialog::setupItemsTable()
+{
+    items << tr("T-shirt") << tr("Badge") << tr("Reference book")
+          << tr("Coffee cup");
+
+    itemsTable = new QTableWidget(items.count(), 2);
+
+    for (int row = 0; row < items.count(); ++row) {
+        QTableWidgetItem *name = new QTableWidgetItem(items[row]);
+        name->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
+        itemsTable->setItem(row, 0, name);
+        QTableWidgetItem *quantity = new QTableWidgetItem("1");
+        itemsTable->setItem(row, 1, quantity);
+    }
+}
+//! [2]
+
+//! [3]
+QList<QPair<QString, int> > DetailsDialog::orderItems()
+{
+    QList<QPair<QString, int> > orderList;
+
+    for (int row = 0; row < items.count(); ++row) {
+        QPair<QString, int> item;
+        item.first = itemsTable->item(row, 0)->text();
+        int quantity = itemsTable->item(row, 1)->data(Qt::DisplayRole).toInt();
+        item.second = qMax(0, quantity);
+        orderList.append(item);
+    }
+
+    return orderList;
+}
+//! [3]
+
+//! [4]
+QString DetailsDialog::senderName() const
+{
+    return nameEdit->text();
+}
+//! [4]
+
+//! [5]
+QString DetailsDialog::senderAddress() const
+{
+    return addressEdit->toPlainText();
+}
+//! [5]
+
+//! [6]
+bool DetailsDialog::sendOffers()
+{
+    return offersCheckBox->isChecked();
+}
+//! [6]
+
+//! [7]
+void DetailsDialog::verify()
+{
+    if (!nameEdit->text().isEmpty() && !addressEdit->toPlainText().isEmpty()) {
+        accept();
+        return;
+    }
+
+    QMessageBox::StandardButton answer;
+    answer = QMessageBox::warning(this, tr("Incomplete Form"),
+        tr("The form does not contain all the necessary information.\n"
+           "Do you want to discard it?"),
+        QMessageBox::Yes | QMessageBox::No);
+
+    if (answer == QMessageBox::Yes)
+        reject();
+}
+//! [7]

examples/widgets/richtext/orderform/detailsdialog.h

@@ -0,0 +1,52 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef DETAILSDIALOG_H
+#define DETAILSDIALOG_H
+
+#include <QDialog>
+#include <QList>
+#include <QPair>
+
+QT_BEGIN_NAMESPACE
+class QCheckBox;
+class QDialogButtonBox;
+class QLabel;
+class QLineEdit;
+class QTableWidget;
+class QTextEdit;
+class QWidget;
+QT_END_NAMESPACE
+
+//! [0]
+class DetailsDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    DetailsDialog(const QString &title, QWidget *parent);
+
+public slots:
+    void verify();
+
+public:
+    QList<QPair<QString, int> > orderItems();
+    QString senderName() const;
+    QString senderAddress() const;
+    bool sendOffers();
+
+private:
+    void setupItemsTable();
+
+    QLabel *nameLabel;
+    QLabel *addressLabel;
+    QCheckBox *offersCheckBox;
+    QLineEdit *nameEdit;
+    QStringList items;
+    QTableWidget *itemsTable;
+    QTextEdit *addressEdit;
+    QDialogButtonBox *buttonBox;
+};
+//! [0]
+
+#endif // DETAILSDIALOG_H

examples/widgets/richtext/orderform/main.cpp

@@ -0,0 +1,18 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+
+#include "mainwindow.h"
+
+//! [0]
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    MainWindow window;
+    window.resize(640, 480);
+    window.show();
+    window.createSample();
+    return app.exec();
+}
+//! [0]

examples/widgets/richtext/orderform/mainwindow.cpp

@@ -0,0 +1,221 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QtWidgets>
+#if defined(QT_PRINTSUPPORT_LIB)
+#include <QtPrintSupport/qtprintsupportglobal.h>
+#if QT_CONFIG(printdialog)
+#include <QPrinter>
+#include <QPrintDialog>
+#endif
+#endif
+
+#include "detailsdialog.h"
+#include "mainwindow.h"
+
+//! [0]
+MainWindow::MainWindow()
+{
+    QMenu *fileMenu = new QMenu(tr("&File"), this);
+    QAction *newAction = fileMenu->addAction(tr("&New..."));
+    newAction->setShortcuts(QKeySequence::New);
+    printAction = fileMenu->addAction(tr("&Print..."), this, &MainWindow::printFile);
+    printAction->setShortcuts(QKeySequence::Print);
+    printAction->setEnabled(false);
+    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
+    quitAction->setShortcuts(QKeySequence::Quit);
+    menuBar()->addMenu(fileMenu);
+
+    letters = new QTabWidget;
+
+    connect(newAction, &QAction::triggered, this, &MainWindow::openDialog);
+    connect(quitAction, &QAction::triggered, this, &MainWindow::close);
+
+    setCentralWidget(letters);
+    setWindowTitle(tr("Order Form"));
+}
+//! [0]
+
+//! [1]
+void MainWindow::createLetter(const QString &name, const QString &address,
+                              QList<QPair<QString,int> > orderItems,
+                              bool sendOffers)
+{
+    QTextEdit *editor = new QTextEdit;
+    int tabIndex = letters->addTab(editor, name);
+    letters->setCurrentIndex(tabIndex);
+//! [1]
+
+//! [2]
+    QTextCursor cursor(editor->textCursor());
+    cursor.movePosition(QTextCursor::Start);
+//! [2] //! [3]
+    QTextFrame *topFrame = cursor.currentFrame();
+    QTextFrameFormat topFrameFormat = topFrame->frameFormat();
+    topFrameFormat.setPadding(16);
+    topFrame->setFrameFormat(topFrameFormat);
+
+    QTextCharFormat textFormat;
+    QTextCharFormat boldFormat;
+    boldFormat.setFontWeight(QFont::Bold);
+
+    QTextFrameFormat referenceFrameFormat;
+    referenceFrameFormat.setBorder(1);
+    referenceFrameFormat.setPadding(8);
+    referenceFrameFormat.setPosition(QTextFrameFormat::FloatRight);
+    referenceFrameFormat.setWidth(QTextLength(QTextLength::PercentageLength, 40));
+    cursor.insertFrame(referenceFrameFormat);
+
+    cursor.insertText("A company", boldFormat);
+    cursor.insertBlock();
+    cursor.insertText("321 City Street");
+    cursor.insertBlock();
+    cursor.insertText("Industry Park");
+    cursor.insertBlock();
+    cursor.insertText("Another country");
+//! [3]
+
+//! [4]
+    cursor.setPosition(topFrame->lastPosition());
+
+    cursor.insertText(name, textFormat);
+    const QStringList lines = address.split('\n');
+    for (const QString &line : lines) {
+        cursor.insertBlock();
+        cursor.insertText(line);
+    }
+//! [4] //! [5]
+    cursor.insertBlock();
+    cursor.insertBlock();
+
+    QDate date = QDate::currentDate();
+    cursor.insertText(tr("Date: %1").arg(date.toString("d MMMM yyyy")),
+                      textFormat);
+    cursor.insertBlock();
+
+    QTextFrameFormat bodyFrameFormat;
+    bodyFrameFormat.setWidth(QTextLength(QTextLength::PercentageLength, 100));
+    cursor.insertFrame(bodyFrameFormat);
+//! [5]
+
+//! [6]
+    cursor.insertText(tr("I would like to place an order for the following "
+                         "items:"), textFormat);
+    cursor.insertBlock();
+//! [6] //! [7]
+    cursor.insertBlock();
+//! [7]
+
+//! [8]
+    QTextTableFormat orderTableFormat;
+    orderTableFormat.setAlignment(Qt::AlignHCenter);
+    QTextTable *orderTable = cursor.insertTable(1, 2, orderTableFormat);
+
+    QTextFrameFormat orderFrameFormat = cursor.currentFrame()->frameFormat();
+    orderFrameFormat.setBorder(1);
+    cursor.currentFrame()->setFrameFormat(orderFrameFormat);
+//! [8]
+
+//! [9]
+    cursor = orderTable->cellAt(0, 0).firstCursorPosition();
+    cursor.insertText(tr("Product"), boldFormat);
+    cursor = orderTable->cellAt(0, 1).firstCursorPosition();
+    cursor.insertText(tr("Quantity"), boldFormat);
+//! [9]
+
+//! [10]
+    for (int i = 0; i < orderItems.count(); ++i) {
+        QPair<QString,int> item = orderItems[i];
+        int row = orderTable->rows();
+
+        orderTable->insertRows(row, 1);
+        cursor = orderTable->cellAt(row, 0).firstCursorPosition();
+        cursor.insertText(item.first, textFormat);
+        cursor = orderTable->cellAt(row, 1).firstCursorPosition();
+        cursor.insertText(QString("%1").arg(item.second), textFormat);
+    }
+//! [10]
+
+//! [11]
+    cursor.setPosition(topFrame->lastPosition());
+
+    cursor.insertBlock();
+//! [11] //! [12]
+    cursor.insertText(tr("Please update my records to take account of the "
+                         "following privacy information:"));
+    cursor.insertBlock();
+//! [12]
+
+//! [13]
+    QTextTable *offersTable = cursor.insertTable(2, 2);
+
+    cursor = offersTable->cellAt(0, 1).firstCursorPosition();
+    cursor.insertText(tr("I want to receive more information about your "
+                         "company's products and special offers."), textFormat);
+    cursor = offersTable->cellAt(1, 1).firstCursorPosition();
+    cursor.insertText(tr("I do not want to receive any promotional information "
+                         "from your company."), textFormat);
+
+    if (sendOffers)
+        cursor = offersTable->cellAt(0, 0).firstCursorPosition();
+    else
+        cursor = offersTable->cellAt(1, 0).firstCursorPosition();
+
+    cursor.insertText("X", boldFormat);
+//! [13]
+
+//! [14]
+    cursor.setPosition(topFrame->lastPosition());
+    cursor.insertBlock();
+    cursor.insertText(tr("Sincerely,"), textFormat);
+    cursor.insertBlock();
+    cursor.insertBlock();
+    cursor.insertBlock();
+    cursor.insertText(name);
+
+    printAction->setEnabled(true);
+}
+//! [14]
+
+//! [15]
+void MainWindow::createSample()
+{
+    DetailsDialog dialog("Dialog with default values", this);
+    createLetter("Mr. Smith", "12 High Street\nSmall Town\nThis country",
+                 dialog.orderItems(), true);
+}
+//! [15]
+
+//! [16]
+void MainWindow::openDialog()
+{
+    DetailsDialog dialog(tr("Enter Customer Details"), this);
+
+    if (dialog.exec() == QDialog::Accepted) {
+        createLetter(dialog.senderName(), dialog.senderAddress(),
+                     dialog.orderItems(), dialog.sendOffers());
+    }
+}
+//! [16]
+
+//! [17]
+void MainWindow::printFile()
+{
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
+    QTextEdit *editor = static_cast<QTextEdit*>(letters->currentWidget());
+//! [18]
+    QPrinter printer;
+
+    QPrintDialog dialog(&printer, this);
+    dialog.setWindowTitle(tr("Print Document"));
+    if (editor->textCursor().hasSelection())
+        dialog.setOption(QAbstractPrintDialog::PrintSelection);
+    if (dialog.exec() != QDialog::Accepted) {
+        return;
+    }
+//! [18]
+
+    editor->print(&printer);
+#endif
+}
+//! [17]

examples/widgets/richtext/orderform/mainwindow.h

@@ -0,0 +1,39 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QList>
+#include <QMainWindow>
+#include <QPair>
+
+QT_BEGIN_NAMESPACE
+class QAction;
+class QTabWidget;
+QT_END_NAMESPACE
+
+//! [0]
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow();
+    void createSample();
+
+public slots:
+    void openDialog();
+    void printFile();
+
+private:
+    void createLetter(const QString &name, const QString &address,
+                      QList<QPair<QString,int> > orderItems,
+                      bool sendOffers);
+
+    QAction *printAction;
+    QTabWidget *letters;
+};
+//! [0]
+
+#endif // MAINWINDOW_H

examples/widgets/richtext/orderform/orderform.pro

@@ -0,0 +1,13 @@
+QT += widgets
+requires(qtConfig(tablewidget))
+qtHaveModule(printsupport): QT += printsupport
+
+HEADERS     = detailsdialog.h \
+              mainwindow.h
+SOURCES     = detailsdialog.cpp \
+              main.cpp \
+              mainwindow.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/richtext/orderform
+INSTALLS += target

examples/widgets/richtext/richtext.pro

@@ -0,0 +1,5 @@
+TEMPLATE    = subdirs
+SUBDIRS     = calendar \
+              orderform \
+              syntaxhighlighter \
+              textedit

examples/widgets/richtext/syntaxhighlighter/CMakeLists.txt

@@ -0,0 +1,38 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(syntaxhighlighter LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/richtext/syntaxhighlighter")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(syntaxhighlighter
+    highlighter.cpp highlighter.h
+    main.cpp
+    mainwindow.cpp mainwindow.h
+)
+
+set_target_properties(syntaxhighlighter PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(syntaxhighlighter PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+install(TARGETS syntaxhighlighter
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/widgets/richtext/syntaxhighlighter/highlighter.cpp

@@ -0,0 +1,108 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "highlighter.h"
+
+//! [0]
+Highlighter::Highlighter(QTextDocument *parent)
+    : QSyntaxHighlighter(parent)
+{
+    HighlightingRule rule;
+
+    keywordFormat.setForeground(Qt::darkBlue);
+    keywordFormat.setFontWeight(QFont::Bold);
+    const QString keywordPatterns[] = {
+        QStringLiteral("\\bchar\\b"), QStringLiteral("\\bclass\\b"), QStringLiteral("\\bconst\\b"),
+        QStringLiteral("\\bdouble\\b"), QStringLiteral("\\benum\\b"), QStringLiteral("\\bexplicit\\b"),
+        QStringLiteral("\\bfriend\\b"), QStringLiteral("\\binline\\b"), QStringLiteral("\\bint\\b"),
+        QStringLiteral("\\blong\\b"), QStringLiteral("\\bnamespace\\b"), QStringLiteral("\\boperator\\b"),
+        QStringLiteral("\\bprivate\\b"), QStringLiteral("\\bprotected\\b"), QStringLiteral("\\bpublic\\b"),
+        QStringLiteral("\\bshort\\b"), QStringLiteral("\\bsignals\\b"), QStringLiteral("\\bsigned\\b"),
+        QStringLiteral("\\bslots\\b"), QStringLiteral("\\bstatic\\b"), QStringLiteral("\\bstruct\\b"),
+        QStringLiteral("\\btemplate\\b"), QStringLiteral("\\btypedef\\b"), QStringLiteral("\\btypename\\b"),
+        QStringLiteral("\\bunion\\b"), QStringLiteral("\\bunsigned\\b"), QStringLiteral("\\bvirtual\\b"),
+        QStringLiteral("\\bvoid\\b"), QStringLiteral("\\bvolatile\\b"), QStringLiteral("\\bbool\\b")
+    };
+    for (const QString &pattern : keywordPatterns) {
+        rule.pattern = QRegularExpression(pattern);
+        rule.format = keywordFormat;
+        highlightingRules.append(rule);
+//! [0] //! [1]
+    }
+//! [1]
+
+//! [2]
+    classFormat.setFontWeight(QFont::Bold);
+    classFormat.setForeground(Qt::darkMagenta);
+    rule.pattern = QRegularExpression(QStringLiteral("\\bQ[A-Za-z]+\\b"));
+    rule.format = classFormat;
+    highlightingRules.append(rule);
+//! [2]
+
+//! [3]
+    singleLineCommentFormat.setForeground(Qt::red);
+    rule.pattern = QRegularExpression(QStringLiteral("//[^\n]*"));
+    rule.format = singleLineCommentFormat;
+    highlightingRules.append(rule);
+
+    multiLineCommentFormat.setForeground(Qt::red);
+//! [3]
+
+//! [4]
+    quotationFormat.setForeground(Qt::darkGreen);
+    rule.pattern = QRegularExpression(QStringLiteral("\".*\""));
+    rule.format = quotationFormat;
+    highlightingRules.append(rule);
+//! [4]
+
+//! [5]
+    functionFormat.setFontItalic(true);
+    functionFormat.setForeground(Qt::blue);
+    rule.pattern = QRegularExpression(QStringLiteral("\\b[A-Za-z0-9_]+(?=\\()"));
+    rule.format = functionFormat;
+    highlightingRules.append(rule);
+//! [5]
+
+//! [6]
+    commentStartExpression = QRegularExpression(QStringLiteral("/\\*"));
+    commentEndExpression = QRegularExpression(QStringLiteral("\\*/"));
+}
+//! [6]
+
+//! [7]
+void Highlighter::highlightBlock(const QString &text)
+{
+    for (const HighlightingRule &rule : std::as_const(highlightingRules)) {
+        QRegularExpressionMatchIterator matchIterator = rule.pattern.globalMatch(text);
+        while (matchIterator.hasNext()) {
+            QRegularExpressionMatch match = matchIterator.next();
+            setFormat(match.capturedStart(), match.capturedLength(), rule.format);
+        }
+    }
+//! [7] //! [8]
+    setCurrentBlockState(0);
+//! [8]
+
+//! [9]
+    int startIndex = 0;
+    if (previousBlockState() != 1)
+        startIndex = text.indexOf(commentStartExpression);
+
+//! [9] //! [10]
+    while (startIndex >= 0) {
+//! [10] //! [11]
+        QRegularExpressionMatch match = commentEndExpression.match(text, startIndex);
+        int endIndex = match.capturedStart();
+        int commentLength = 0;
+        if (endIndex == -1) {
+            setCurrentBlockState(1);
+            commentLength = text.length() - startIndex;
+        } else {
+            commentLength = endIndex - startIndex
+                            + match.capturedLength();
+        }
+        setFormat(startIndex, commentLength, multiLineCommentFormat);
+        startIndex = text.indexOf(commentStartExpression, startIndex + commentLength);
+    }
+}
+//! [11]

examples/widgets/richtext/syntaxhighlighter/highlighter.h

@@ -0,0 +1,46 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef HIGHLIGHTER_H
+#define HIGHLIGHTER_H
+
+#include <QSyntaxHighlighter>
+#include <QTextCharFormat>
+#include <QRegularExpression>
+
+QT_BEGIN_NAMESPACE
+class QTextDocument;
+QT_END_NAMESPACE
+
+//! [0]
+class Highlighter : public QSyntaxHighlighter
+{
+    Q_OBJECT
+
+public:
+    Highlighter(QTextDocument *parent = nullptr);
+
+protected:
+    void highlightBlock(const QString &text) override;
+
+private:
+    struct HighlightingRule
+    {
+        QRegularExpression pattern;
+        QTextCharFormat format;
+    };
+    QList<HighlightingRule> highlightingRules;
+
+    QRegularExpression commentStartExpression;
+    QRegularExpression commentEndExpression;
+
+    QTextCharFormat keywordFormat;
+    QTextCharFormat classFormat;
+    QTextCharFormat singleLineCommentFormat;
+    QTextCharFormat multiLineCommentFormat;
+    QTextCharFormat quotationFormat;
+    QTextCharFormat functionFormat;
+};
+//! [0]
+
+#endif // HIGHLIGHTER_H

examples/widgets/richtext/syntaxhighlighter/main.cpp

@@ -0,0 +1,15 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "mainwindow.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    MainWindow window;
+    window.resize(640, 512);
+    window.show();
+    return app.exec();
+}

examples/widgets/richtext/syntaxhighlighter/mainwindow.cpp

@@ -0,0 +1,88 @@
+// 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 *parent)
+    : QMainWindow(parent)
+{
+    setupFileMenu();
+    setupHelpMenu();
+    setupEditor();
+
+    setCentralWidget(editor);
+    setWindowTitle(tr("Syntax Highlighter"));
+}
+//! [0]
+
+void MainWindow::about()
+{
+    QMessageBox::about(this, tr("About Syntax Highlighter"),
+                tr("<p>The <b>Syntax Highlighter</b> example shows how " \
+                   "to perform simple syntax highlighting by subclassing " \
+                   "the QSyntaxHighlighter class and describing " \
+                   "highlighting rules using regular expressions.</p>"));
+}
+
+void MainWindow::newFile()
+{
+    editor->clear();
+}
+
+void MainWindow::openFile(const QString &path)
+{
+    QString fileName = path;
+
+    if (fileName.isNull())
+        fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "", "C++ Files (*.cpp *.h)");
+
+    if (!fileName.isEmpty()) {
+        QFile file(fileName);
+        if (file.open(QFile::ReadOnly | QFile::Text))
+            editor->setPlainText(file.readAll());
+    }
+}
+
+//! [1]
+void MainWindow::setupEditor()
+{
+    QFont font;
+    font.setFamily("Courier");
+    font.setFixedPitch(true);
+    font.setPointSize(10);
+
+    editor = new QTextEdit;
+    editor->setFont(font);
+
+    highlighter = new Highlighter(editor->document());
+
+    QFile file("mainwindow.h");
+    if (file.open(QFile::ReadOnly | QFile::Text))
+        editor->setPlainText(file.readAll());
+}
+//! [1]
+
+void MainWindow::setupFileMenu()
+{
+    QMenu *fileMenu = new QMenu(tr("&File"), this);
+    menuBar()->addMenu(fileMenu);
+
+    fileMenu->addAction(tr("&New"), QKeySequence::New,
+                        this, &MainWindow::newFile);
+    fileMenu->addAction(tr("&Open..."), QKeySequence::Open,
+                        this, [this](){ openFile(); });
+    fileMenu->addAction(tr("E&xit"), QKeySequence::Quit,
+                        qApp, &QApplication::quit);
+}
+
+void MainWindow::setupHelpMenu()
+{
+    QMenu *helpMenu = new QMenu(tr("&Help"), this);
+    menuBar()->addMenu(helpMenu);
+
+    helpMenu->addAction(tr("&About"), this, &MainWindow::about);
+    helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt);
+}

examples/widgets/richtext/syntaxhighlighter/mainwindow.h

@@ -0,0 +1,38 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include "highlighter.h"
+
+#include <QMainWindow>
+
+QT_BEGIN_NAMESPACE
+class QTextEdit;
+QT_END_NAMESPACE
+
+//! [0]
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = nullptr);
+
+public slots:
+    void about();
+    void newFile();
+    void openFile(const QString &path = QString());
+
+private:
+    void setupEditor();
+    void setupFileMenu();
+    void setupHelpMenu();
+
+    QTextEdit *editor;
+    Highlighter *highlighter;
+};
+//! [0]
+
+#endif // MAINWINDOW_H

examples/widgets/richtext/syntaxhighlighter/syntaxhighlighter.pro

@@ -0,0 +1,12 @@
+QT += widgets
+requires(qtConfig(filedialog))
+
+HEADERS         = highlighter.h \
+                  mainwindow.h
+SOURCES         = highlighter.cpp \
+                  mainwindow.cpp \
+                  main.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/richtext/syntaxhighlighter
+INSTALLS += target

examples/widgets/richtext/textedit/CMakeLists.txt

@@ -0,0 +1,105 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(textedit LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/richtext/textedit")
+
+find_package(Qt6
+    REQUIRED COMPONENTS Core Gui Widgets
+    OPTIONAL_COMPONENTS PrintSupport
+)
+
+qt_standard_project_setup()
+
+qt_add_executable(textedit
+    main.cpp
+    textedit.cpp textedit.h
+)
+
+set_target_properties(textedit PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(textedit PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+if (TARGET Qt6::PrintSupport)
+    target_link_libraries(textedit PRIVATE Qt6::PrintSupport)
+endif()
+
+# Resources:
+set(textedit_resource_files
+    "example.html"
+    "images/logo32.png"
+    "images/mac/checkbox-checked.png"
+    "images/mac/checkbox.png"
+    "images/mac/editcopy.png"
+    "images/mac/editcut.png"
+    "images/mac/editpaste.png"
+    "images/mac/editredo.png"
+    "images/mac/editundo.png"
+    "images/mac/exportpdf.png"
+    "images/mac/filenew.png"
+    "images/mac/fileopen.png"
+    "images/mac/fileprint.png"
+    "images/mac/filesave.png"
+    "images/mac/format-indent-less.png"
+    "images/mac/format-indent-more.png"
+    "images/mac/textbold.png"
+    "images/mac/textcenter.png"
+    "images/mac/textitalic.png"
+    "images/mac/textjustify.png"
+    "images/mac/textleft.png"
+    "images/mac/textright.png"
+    "images/mac/textunder.png"
+    "images/mac/textundercolor.png"
+    "images/mac/zoomin.png"
+    "images/mac/zoomout.png"
+    "images/win/checkbox-checked.png"
+    "images/win/checkbox.png"
+    "images/win/editcopy.png"
+    "images/win/editcut.png"
+    "images/win/editpaste.png"
+    "images/win/editredo.png"
+    "images/win/editundo.png"
+    "images/win/exportpdf.png"
+    "images/win/filenew.png"
+    "images/win/fileopen.png"
+    "images/win/fileprint.png"
+    "images/win/filesave.png"
+    "images/win/format-indent-less.png"
+    "images/win/format-indent-more.png"
+    "images/win/textbold.png"
+    "images/win/textcenter.png"
+    "images/win/textitalic.png"
+    "images/win/textjustify.png"
+    "images/win/textleft.png"
+    "images/win/textright.png"
+    "images/win/textunder.png"
+    "images/win/textundercolor.png"
+    "images/win/zoomin.png"
+    "images/win/zoomout.png"
+)
+
+qt_add_resources(textedit "textedit"
+    PREFIX
+        "/"
+    FILES
+        ${textedit_resource_files}
+)
+
+install(TARGETS textedit
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/widgets/richtext/textedit/example.html

@@ -0,0 +1,84 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
+<html><head><meta name="qrichtext" content="1" /><meta charset="utf-8" /><title>QTextEdit Example</title><style type="text/css">
+p, li { white-space: pre-wrap; }
+hr { height: 1px; border-width: 0; }
+</style></head><body style=" font-family:'Helvetica'; font-size:9pt; font-weight:400; font-style:normal;">
+<h1 align="center" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-size:20pt; font-weight:600;">QTextEdit</span></h1>
+<p align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-size:11pt;">The QTextEdit widget is an advanced editor that supports formatted rich text. It can be used to display HTML and other rich document formats. Internally, QTextEdit uses the QTextDocument class to describe both the high-level structure of each document and the low-level formatting of paragraphs.</span></p>
+<p align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;">If you are viewing this document in the <span style=" font-style:italic;">textedit</span> example, you can edit this document to explore Qt's rich text editing features. We have included some comments in each of the following sections to encourage you to experiment.  </p>
+<h2 style=" margin-top:16px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:18pt; font-weight:600;"><span style=" font-size:16pt;">Font and Paragraph Styles</span></h2>
+<p align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-size:11pt;">QTextEdit supports </span><span style=" font-size:11pt; font-weight:600;">bold</span><span style=" font-size:11pt;">, </span><span style=" font-size:11pt; font-style:italic;">italic</span><span style=" font-size:11pt;">, and </span><span style=" font-size:11pt; text-decoration: underline;">underlined</span><span style=" font-size:11pt;"> font styles, and can display </span><span style=" font-size:11pt; font-weight:600; color:#00007f;">multicolored</span><span style=" font-size:11pt;"> </span><span style=" font-size:11pt; font-weight:600; color:#aa0000;">text</span><span style=" font-size:11pt;">. Font families such as </span><span style=" font-family:'Times New Roman'; font-size:11pt; font-weight:600;">Times New Roman</span><span style=" font-size:11pt;"> and </span><span style=" font-family:'Courier'; font-size:11pt; font-weight:600;">Courier</span><span style=" font-size:11pt;"> can also be used directly. </span><span style=" font-size:11pt; font-style:italic;">If you place the cursor in a region of styled text, the controls in the tool bars will change to reflect the current style.</span></p>
+<p align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;">Paragraphs can be formatted so that the text is left-aligned, right-aligned, centered, or fully justified.</p>
+<p align="center" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"><span style=" font-style:italic;">Try changing the alignment of some text and resize the editor to see how the text layout changes.</span> </p>
+<h2 align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-size:16pt; font-weight:600;">Lists</span></h2>
+<p align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:16pt; font-weight:600;"><span style=" font-size:11pt; font-weight:400;">Different kinds of lists can be included in rich text documents. Standard bullet lists can be nested, using different symbols for each level of the list: </span></p>
+<ul style="-qt-list-indent: 1;"><li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Disc symbols are typically used for top-level list items. </li></ul>
+<ul type=circle style="-qt-list-indent: 2;"><li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Circle symbols can be used to distinguish between items in lower-level lists.</li></ul>
+<ul type=square style="-qt-list-indent: 3;"><li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Square symbols provide a reasonable alternative to discs and circles. </li></ul>
+<p style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;">Ordered lists can be created that can be used for tables of contents. Different characters can be used to enumerate items, and we can use both Roman and Arabic numerals in the same list structure: </p>
+<ol style="-qt-list-indent: 1;"><li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Introduction</li>
+<li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Qt Tools </li></ol>
+<ol type=a style="-qt-list-indent: 2;"><li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Qt Assistant</li>
+<li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Qt Designer</li>
+<ol type=A style="-qt-list-indent: 3;"><li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Form Editor</li>
+<li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Component Architecture</li></ol>
+<li style=" font-size:11pt;" style=" margin-top:0px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Qt Linguist</li></ol>
+<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"></p>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;">The list will automatically be renumbered if you add or remove items. <span style=" font-style:italic;">Try adding new sections to the above list or removing existing item to see the numbers change.</span> </p>
+<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"></p>
+<h2 style=" margin-top:0px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"><span style=" font-size:16pt; font-weight:600;">Images</span></h2>
+<p style=" margin-top:0px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:16pt; font-weight:600;"><span style=" font-size:11pt; font-weight:400;">Inline images are treated like ordinary ranges of characters in the text editor, so they flow with the surrounding text. Images can also be selected in the same way as text, making it easy to cut, copy, and paste them. </span></p>
+<p align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"><img src=":/images/logo32.png" /><span style=" font-style:italic;"> Try to select this image by clicking and dragging over it with the mouse, or use the text cursor to select it by holding down Shift and using the arrow keys. You can then cut or copy it, and paste it into different parts of this document.</span></p>
+<h2 align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-size:16pt; font-weight:600;">Horizontal Rule</span></h2>
+<p style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Here is an example:</p>
+<hr width="50%" style=" background-color:green;"/>
+<h2 align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"><span style=" font-size:16pt; font-weight:600;">Tables</span></h2>
+<p align="justify" style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:16pt; font-weight:600;"><span style=" font-size:11pt; font-weight:400;">QTextEdit can arrange and format tables, supporting features such as row and column spans, text formatting within cells, and size constraints for columns. </span></p>
+<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"></p>
+<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"></p>
+<table border="1" align="center" width="90%" cellspacing="0" cellpadding="4">
+<tr>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"> </p></td>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-weight:600;">Development Tools </span></p></td>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-weight:600;">Programming Techniques </span></p></td>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-weight:600;">Graphical User Interfaces </span></p></td></tr>
+<tr>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-weight:600;">9:00 - 11:00 </span></p></td>
+<td colspan="3">
+<p align="center" style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Introduction to <span style=" font-style:italic;">Qt </span></p></td></tr>
+<tr>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-weight:600;">11:00 - 13:00 </span></p></td>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Using <span style=" font-style:italic;">qmake</span> </p></td>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Object-oriented Programming </p></td>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Layouts in <span style=" font-style:italic;">Qt</span> </p></td></tr>
+<tr>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-weight:600;">13:00 - 15:00 </span></p></td>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-style:italic;">Qt Designer</span> Tutorial </p></td>
+<td rowspan="2">
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Extreme Programming </p></td>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Writing Custom Styles </p></td></tr>
+<tr>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-weight:600;">15:00 - 17:00 </span></p></td>
+<td>
+<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-style:italic;">Qt Linguist</span> and Internationalization </p></td>
+<td></td></tr></table>
+<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"></p>
+<p style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt; font-style:italic;">Try adding text to the cells in the table and experiment with the alignment of the paragraphs.</p>
+<h2 style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"><span style=" font-size:16pt; font-weight:600;">Hyperlinks</span></h2>
+<p style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-size:11pt;">QTextEdit is designed to support hyperlinks between documents, and this feature is used extensively in </span><span style=" font-size:11pt; font-style:italic;">Qt Assistant</span><span style=" font-size:11pt;">. Hyperlinks are automatically created when an HTML file is imported into an editor. Since the rich text framework supports hyperlinks natively, they can also be created programmatically.</span></p>
+<h2 style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"><span style=" font-size:16pt; font-weight:600;">Undo and Redo</span></h2>
+<p style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;">Full support for undo and redo operations is built into QTextEdit and the underlying rich text framework. Operations on a document can be packaged together to make editing a more comfortable experience for the user.</p>
+<p style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:11pt;"><span style=" font-style:italic;">Try making changes to this document and press Ctrl+Z to undo them. You can always recover  the original contents of the document.</span> </p></body></html>

examples/widgets/richtext/textedit/example.md

@@ -0,0 +1,104 @@
+# QTextEdit
+
+The QTextEdit widget is an advanced editor that supports formatted rich text.
+It can be used to display HTML and other rich document formats. Internally,
+QTextEdit uses the QTextDocument class to describe both the high-level
+structure of each document and the low-level formatting of paragraphs.
+
+If you are viewing this document in the textedit example, you can edit this
+document to explore Qt's rich text editing features. We have included some
+comments in each of the following sections to encourage you to experiment.
+
+## Font and Paragraph Styles
+
+QTextEdit supports **bold**, *italic*, _underline_ & ~~strikethrough~~ font
+styles, and can display
+<span style="font-size:10pt; font-weight:600; color:#00007f;"> multicolored</span>
+text. Font families such as
+<span style="font-family:Times New Roman">Times New Roman</span> and
+<span style="font-family:Courier">Courier</span>
+can also be used directly. *If you place the cursor in a region of styled text,
+the controls in the tool bars will change to reflect the current style.*
+
+Paragraphs can be formatted so that the text is left-aligned, right-aligned,
+centered, or fully justified.
+
+*Try changing the alignment of some text and resize the editor to see how the
+text layout changes.*
+
+## Lists
+
+Different kinds of lists can be included in rich text documents. Standard
+bullet lists can be nested, using different symbols for each level of the list:
+
+- Disc symbols are typically used for top-level list items.
+  * Circle symbols can be used to distinguish between items in lower-level
+    lists.
+    + Square symbols provide a reasonable alternative to discs and circles.
+
+Ordered lists can be created that can be used for tables of contents. Different
+characters can be used to enumerate items, and we can use both Roman and Arabic
+numerals in the same list structure:
+
+1. Introduction
+2. Qt Tools
+    1) Qt Assistant
+    2) Qt Designer
+        1. Form Editor
+        2. Component Architecture
+    3) Qt Linguist
+
+The list will automatically be renumbered if you add or remove items. *Try
+adding new sections to the above list or removing existing item to see the
+numbers change.*
+
+Task lists can be used to track progress on projects:
+
+- [ ] This is not yet done
+- This is just a bullet point
+- [x] This is done
+
+## Images
+
+Inline images are treated like ordinary ranges of characters in the text
+editor, so they flow with the surrounding text. Images can also be selected in
+the same way as text, making it easy to cut, copy, and paste them.
+
+![logo](images/logo32.png "logo") *Try to select this image by clicking and
+dragging over it with the mouse, or use the text cursor to select it by holding
+down Shift and using the arrow keys. You can then cut or copy it, and paste it
+into different parts of this document.*
+
+## Tables
+
+QTextEdit can arrange and format tables, supporting features such as row and
+column spans, text formatting within cells, and size constraints for columns.
+
+|               | Development Tools | Programming Techniques | Graphical User Interfaces |
+| ------------: | ----------------- | ---------------------- | ------------------------- |
+| 9:00 - 11:00  |                     Introduction to Qt                               |||
+| 11:00 - 13:00 | Using qmake       | Object-oriented Programming | Layouts in Qt        |
+| 13:00 - 15:00 | Qt Designer Tutorial | Extreme Programming | Writing Custom Styles     |
+| 15:00 - 17:00 | Qt Linguist and Internationalization | &nbsp; | &nbsp; |
+
+*Try adding text to the cells in the table and experiment with the alignment of
+the paragraphs.*
+
+## Hyperlinks
+
+QTextEdit is designed to support hyperlinks between documents, and this feature
+is used extensively in 
+[Qt Assistant](http://doc.qt.io/qt-5/qtassistant-index.html). Hyperlinks are
+automatically created when an HTML file is imported into an editor. Since the
+rich text framework supports hyperlinks natively, they can also be created
+programmatically.
+
+## Undo and Redo
+
+Full support for undo and redo operations is built into QTextEdit and the
+underlying rich text framework. Operations on a document can be packaged
+together to make editing a more comfortable experience for the user.
+
+*Try making changes to this document and press `Ctrl+Z` to undo them. You can
+always recover the original contents of the document.*
+

examples/widgets/richtext/textedit/main.cpp

@@ -0,0 +1,38 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "textedit.h"
+
+#include <QApplication>
+#include <QCommandLineParser>
+#include <QCommandLineOption>
+#include <QScreen>
+
+int main(int argc, char *argv[])
+{
+    Q_INIT_RESOURCE(textedit);
+
+    QApplication a(argc, argv);
+    QCoreApplication::setOrganizationName("QtProject");
+    QCoreApplication::setApplicationName("Rich Text");
+    QCoreApplication::setApplicationVersion(QT_VERSION_STR);
+    QCommandLineParser parser;
+    parser.setApplicationDescription(QCoreApplication::applicationName());
+    parser.addHelpOption();
+    parser.addVersionOption();
+    parser.addPositionalArgument("file", "The file to open.");
+    parser.process(a);
+
+    TextEdit mw;
+
+    const QRect availableGeometry = mw.screen()->availableGeometry();
+    mw.resize(availableGeometry.width() / 2, (availableGeometry.height() * 2) / 3);
+    mw.move((availableGeometry.width() - mw.width()) / 2,
+            (availableGeometry.height() - mw.height()) / 2);
+
+    if (!mw.load(parser.positionalArguments().value(0, QLatin1String(":/example.html"))))
+        mw.fileNew();
+
+    mw.show();
+    return a.exec();
+}

examples/widgets/richtext/textedit/textedit.cpp

@@ -0,0 +1,851 @@
+// Copyright (C) 2021 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "textedit.h"
+
+#include <QActionGroup>
+#include <QApplication>
+#include <QClipboard>
+#include <QColorDialog>
+#include <QComboBox>
+#include <QFontComboBox>
+#include <QFile>
+#include <QFileDialog>
+#include <QFileInfo>
+#include <QFontDatabase>
+#include <QMenu>
+#include <QMenuBar>
+#include <QTextEdit>
+#include <QStatusBar>
+#include <QToolBar>
+#include <QTextCursor>
+#include <QTextDocumentWriter>
+#include <QTextList>
+#include <QtDebug>
+#include <QCloseEvent>
+#include <QMessageBox>
+#include <QMimeData>
+#include <QMimeDatabase>
+#include <QStringDecoder>
+#if defined(QT_PRINTSUPPORT_LIB)
+#include <QtPrintSupport/qtprintsupportglobal.h>
+#if QT_CONFIG(printer)
+#if QT_CONFIG(printdialog)
+#include <QPrintDialog>
+#endif
+#include <QPrinter>
+#if QT_CONFIG(printpreviewdialog)
+#include <QPrintPreviewDialog>
+#endif
+#endif
+#endif
+
+#ifdef Q_OS_MAC
+const QString rsrcPath = ":/images/mac";
+#else
+const QString rsrcPath = ":/images/win";
+#endif
+
+TextEdit::TextEdit(QWidget *parent)
+    : QMainWindow(parent)
+{
+#ifdef Q_OS_MACOS
+    setUnifiedTitleAndToolBarOnMac(true);
+#endif
+    setWindowTitle(QCoreApplication::applicationName());
+
+    textEdit = new QTextEdit(this);
+    connect(textEdit, &QTextEdit::currentCharFormatChanged,
+            this, &TextEdit::currentCharFormatChanged);
+    connect(textEdit, &QTextEdit::cursorPositionChanged,
+            this, &TextEdit::cursorPositionChanged);
+    setCentralWidget(textEdit);
+
+    setToolButtonStyle(Qt::ToolButtonFollowStyle);
+    setupFileActions();
+    setupEditActions();
+    setupTextActions();
+
+    {
+        QMenu *helpMenu = menuBar()->addMenu(tr("Help"));
+        helpMenu->addAction(tr("About"), this, &TextEdit::about);
+        helpMenu->addAction(tr("About &Qt"), qApp, &QApplication::aboutQt);
+    }
+
+    QFont textFont("Helvetica");
+    textFont.setStyleHint(QFont::SansSerif);
+    textEdit->setFont(textFont);
+    fontChanged(textEdit->font());
+    colorChanged(textEdit->textColor());
+    alignmentChanged(textEdit->alignment());
+
+    auto *document = textEdit->document();
+    connect(document, &QTextDocument::modificationChanged,
+            actionSave, &QAction::setEnabled);
+    connect(document, &QTextDocument::modificationChanged,
+            this, &QWidget::setWindowModified);
+    connect(document, &QTextDocument::undoAvailable,
+            actionUndo, &QAction::setEnabled);
+    connect(document, &QTextDocument::redoAvailable,
+            actionRedo, &QAction::setEnabled);
+
+    setWindowModified(document->isModified());
+    actionSave->setEnabled(document->isModified());
+    actionUndo->setEnabled(document->isUndoAvailable());
+    actionRedo->setEnabled(document->isRedoAvailable());
+
+#ifndef QT_NO_CLIPBOARD
+    actionCut->setEnabled(false);
+    connect(textEdit, &QTextEdit::copyAvailable, actionCut, &QAction::setEnabled);
+    actionCopy->setEnabled(false);
+    connect(textEdit, &QTextEdit::copyAvailable, actionCopy, &QAction::setEnabled);
+
+    connect(QGuiApplication::clipboard(), &QClipboard::dataChanged,
+            this, &TextEdit::clipboardDataChanged);
+#endif
+
+    textEdit->setFocus();
+    setCurrentFileName(QString());
+
+#ifdef Q_OS_MACOS
+    // Use dark text on light background on macOS, also in dark mode.
+    QPalette pal = textEdit->palette();
+    pal.setColor(QPalette::Base, QColor(Qt::white));
+    pal.setColor(QPalette::Text, QColor(Qt::black));
+    textEdit->setPalette(pal);
+#endif
+}
+
+void TextEdit::closeEvent(QCloseEvent *e)
+{
+    if (maybeSave())
+        e->accept();
+    else
+        e->ignore();
+}
+
+void TextEdit::setupFileActions()
+{
+    QToolBar *tb = addToolBar(tr("File Actions"));
+    QMenu *menu = menuBar()->addMenu(tr("&File"));
+
+    const QIcon newIcon = QIcon::fromTheme("document-new", QIcon(rsrcPath + "/filenew.png"));
+    QAction *a = menu->addAction(newIcon,  tr("&New"), this, &TextEdit::fileNew);
+    tb->addAction(a);
+    a->setPriority(QAction::LowPriority);
+    a->setShortcut(QKeySequence::New);
+
+    const QIcon openIcon = QIcon::fromTheme("document-open", QIcon(rsrcPath + "/fileopen.png"));
+    a = menu->addAction(openIcon, tr("&Open..."), this, &TextEdit::fileOpen);
+    a->setShortcut(QKeySequence::Open);
+    tb->addAction(a);
+
+    menu->addSeparator();
+
+    const QIcon saveIcon = QIcon::fromTheme("document-save", QIcon(rsrcPath + "/filesave.png"));
+    actionSave = menu->addAction(saveIcon, tr("&Save"), this, &TextEdit::fileSave);
+    actionSave->setShortcut(QKeySequence::Save);
+    actionSave->setEnabled(false);
+    tb->addAction(actionSave);
+
+    a = menu->addAction(tr("Save &As..."), this, &TextEdit::fileSaveAs);
+    a->setPriority(QAction::LowPriority);
+    menu->addSeparator();
+
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
+    const QIcon printIcon = QIcon::fromTheme("document-print", QIcon(rsrcPath + "/fileprint.png"));
+    a = menu->addAction(printIcon, tr("&Print..."), this, &TextEdit::filePrint);
+    a->setPriority(QAction::LowPriority);
+    a->setShortcut(QKeySequence::Print);
+    tb->addAction(a);
+
+    const QIcon filePrintIcon = QIcon::fromTheme("fileprint", QIcon(rsrcPath + "/fileprint.png"));
+    menu->addAction(filePrintIcon, tr("Print Preview..."), this, &TextEdit::filePrintPreview);
+
+    const QIcon exportPdfIcon = QIcon::fromTheme("exportpdf", QIcon(rsrcPath + "/exportpdf.png"));
+    a = menu->addAction(exportPdfIcon, tr("&Export PDF..."), this, &TextEdit::filePrintPdf);
+    a->setPriority(QAction::LowPriority);
+    a->setShortcut(Qt::CTRL | Qt::Key_D);
+    tb->addAction(a);
+
+    menu->addSeparator();
+#endif
+
+    a = menu->addAction(tr("&Quit"), qApp, &QCoreApplication::quit);
+    a->setShortcut(Qt::CTRL | Qt::Key_Q);
+}
+
+void TextEdit::setupEditActions()
+{
+    QToolBar *tb = addToolBar(tr("Edit Actions"));
+    QMenu *menu = menuBar()->addMenu(tr("&Edit"));
+
+    const QIcon undoIcon = QIcon::fromTheme("edit-undo", QIcon(rsrcPath + "/editundo.png"));
+    actionUndo = menu->addAction(undoIcon, tr("&Undo"), textEdit, &QTextEdit::undo);
+    actionUndo->setShortcut(QKeySequence::Undo);
+    tb->addAction(actionUndo);
+
+    const QIcon redoIcon = QIcon::fromTheme("edit-redo", QIcon(rsrcPath + "/editredo.png"));
+    actionRedo = menu->addAction(redoIcon, tr("&Redo"), textEdit, &QTextEdit::redo);
+    actionRedo->setPriority(QAction::LowPriority);
+    actionRedo->setShortcut(QKeySequence::Redo);
+    tb->addAction(actionRedo);
+    menu->addSeparator();
+
+#ifndef QT_NO_CLIPBOARD
+    const QIcon cutIcon = QIcon::fromTheme("edit-cut", QIcon(rsrcPath + "/editcut.png"));
+    actionCut = menu->addAction(cutIcon, tr("Cu&t"), textEdit, &QTextEdit::cut);
+    actionCut->setPriority(QAction::LowPriority);
+    actionCut->setShortcut(QKeySequence::Cut);
+    tb->addAction(actionCut);
+
+    const QIcon copyIcon = QIcon::fromTheme("edit-copy", QIcon(rsrcPath + "/editcopy.png"));
+    actionCopy = menu->addAction(copyIcon, tr("&Copy"), textEdit, &QTextEdit::copy);
+    actionCopy->setPriority(QAction::LowPriority);
+    actionCopy->setShortcut(QKeySequence::Copy);
+    tb->addAction(actionCopy);
+
+    const QIcon pasteIcon = QIcon::fromTheme("edit-paste", QIcon(rsrcPath + "/editpaste.png"));
+    actionPaste = menu->addAction(pasteIcon, tr("&Paste"), textEdit, &QTextEdit::paste);
+    actionPaste->setPriority(QAction::LowPriority);
+    actionPaste->setShortcut(QKeySequence::Paste);
+    tb->addAction(actionPaste);
+    if (const QMimeData *md = QGuiApplication::clipboard()->mimeData())
+        actionPaste->setEnabled(md->hasText());
+#endif
+}
+
+void TextEdit::setupTextActions()
+{
+    QToolBar *tb = addToolBar(tr("Format Actions"));
+    QMenu *menu = menuBar()->addMenu(tr("F&ormat"));
+
+    const QIcon boldIcon = QIcon::fromTheme("format-text-bold", QIcon(rsrcPath + "/textbold.png"));
+    actionTextBold = menu->addAction(boldIcon, tr("&Bold"), this, &TextEdit::textBold);
+    actionTextBold->setShortcut(Qt::CTRL | Qt::Key_B);
+    actionTextBold->setPriority(QAction::LowPriority);
+    QFont bold;
+    bold.setBold(true);
+    actionTextBold->setFont(bold);
+    tb->addAction(actionTextBold);
+    actionTextBold->setCheckable(true);
+
+    const QIcon italicIcon = QIcon::fromTheme("format-text-italic", QIcon(rsrcPath + "/textitalic.png"));
+    actionTextItalic = menu->addAction(italicIcon, tr("&Italic"), this, &TextEdit::textItalic);
+    actionTextItalic->setPriority(QAction::LowPriority);
+    actionTextItalic->setShortcut(Qt::CTRL | Qt::Key_I);
+    QFont italic;
+    italic.setItalic(true);
+    actionTextItalic->setFont(italic);
+    tb->addAction(actionTextItalic);
+    actionTextItalic->setCheckable(true);
+
+    const QIcon underlineIcon = QIcon::fromTheme("format-text-underline", QIcon(rsrcPath + "/textunder.png"));
+    actionTextUnderline = menu->addAction(underlineIcon, tr("&Underline"), this, &TextEdit::textUnderline);
+    actionTextUnderline->setShortcut(Qt::CTRL | Qt::Key_U);
+    actionTextUnderline->setPriority(QAction::LowPriority);
+    QFont underline;
+    underline.setUnderline(true);
+    actionTextUnderline->setFont(underline);
+    tb->addAction(actionTextUnderline);
+    actionTextUnderline->setCheckable(true);
+
+    menu->addSeparator();
+
+    const QIcon leftIcon = QIcon::fromTheme("format-justify-left", QIcon(rsrcPath + "/textleft.png"));
+    actionAlignLeft = new QAction(leftIcon, tr("&Left"), this);
+    actionAlignLeft->setShortcut(Qt::CTRL | Qt::Key_L);
+    actionAlignLeft->setCheckable(true);
+    actionAlignLeft->setPriority(QAction::LowPriority);
+    const QIcon centerIcon = QIcon::fromTheme("format-justify-center", QIcon(rsrcPath + "/textcenter.png"));
+    actionAlignCenter = new QAction(centerIcon, tr("C&enter"), this);
+    actionAlignCenter->setShortcut(Qt::CTRL | Qt::Key_E);
+    actionAlignCenter->setCheckable(true);
+    actionAlignCenter->setPriority(QAction::LowPriority);
+    const QIcon rightIcon = QIcon::fromTheme("format-justify-right", QIcon(rsrcPath + "/textright.png"));
+    actionAlignRight = new QAction(rightIcon, tr("&Right"), this);
+    actionAlignRight->setShortcut(Qt::CTRL | Qt::Key_R);
+    actionAlignRight->setCheckable(true);
+    actionAlignRight->setPriority(QAction::LowPriority);
+    const QIcon fillIcon = QIcon::fromTheme("format-justify-fill", QIcon(rsrcPath + "/textjustify.png"));
+    actionAlignJustify = new QAction(fillIcon, tr("&Justify"), this);
+    actionAlignJustify->setShortcut(Qt::CTRL | Qt::Key_J);
+    actionAlignJustify->setCheckable(true);
+    actionAlignJustify->setPriority(QAction::LowPriority);
+    const QIcon indentMoreIcon = QIcon::fromTheme("format-indent-more", QIcon(rsrcPath + "/format-indent-more.png"));
+    actionIndentMore = menu->addAction(indentMoreIcon, tr("&Indent"), this, &TextEdit::indent);
+    actionIndentMore->setShortcut(Qt::CTRL | Qt::Key_BracketRight);
+    actionIndentMore->setPriority(QAction::LowPriority);
+    const QIcon indentLessIcon = QIcon::fromTheme("format-indent-less", QIcon(rsrcPath + "/format-indent-less.png"));
+    actionIndentLess = menu->addAction(indentLessIcon, tr("&Unindent"), this, &TextEdit::unindent);
+    actionIndentLess->setShortcut(Qt::CTRL | Qt::Key_BracketLeft);
+    actionIndentLess->setPriority(QAction::LowPriority);
+
+    // Make sure the alignLeft is always left of the alignRight
+    QActionGroup *alignGroup = new QActionGroup(this);
+    connect(alignGroup, &QActionGroup::triggered, this, &TextEdit::textAlign);
+
+    if (QGuiApplication::isLeftToRight()) {
+        alignGroup->addAction(actionAlignLeft);
+        alignGroup->addAction(actionAlignCenter);
+        alignGroup->addAction(actionAlignRight);
+    } else {
+        alignGroup->addAction(actionAlignRight);
+        alignGroup->addAction(actionAlignCenter);
+        alignGroup->addAction(actionAlignLeft);
+    }
+    alignGroup->addAction(actionAlignJustify);
+
+    tb->addActions(alignGroup->actions());
+    menu->addActions(alignGroup->actions());
+    tb->addAction(actionIndentMore);
+    tb->addAction(actionIndentLess);
+    menu->addAction(actionIndentMore);
+    menu->addAction(actionIndentLess);
+
+    menu->addSeparator();
+
+    QPixmap pix(16, 16);
+    pix.fill(Qt::black);
+    actionTextColor = menu->addAction(pix, tr("&Color..."), this, &TextEdit::textColor);
+    tb->addAction(actionTextColor);
+
+    const QIcon underlineColorIcon(rsrcPath + "/textundercolor.png");
+    actionUnderlineColor = menu->addAction(underlineColorIcon, tr("Underline color..."), this, &TextEdit::underlineColor);
+    tb->addAction(actionUnderlineColor);
+
+    menu->addSeparator();
+
+    const QIcon checkboxIcon = QIcon::fromTheme("status-checkbox-checked", QIcon(rsrcPath + "/checkbox-checked.png"));
+    actionToggleCheckState = menu->addAction(checkboxIcon, tr("Chec&ked"), this, &TextEdit::setChecked);
+    actionToggleCheckState->setShortcut(Qt::CTRL | Qt::Key_K);
+    actionToggleCheckState->setCheckable(true);
+    actionToggleCheckState->setPriority(QAction::LowPriority);
+    tb->addAction(actionToggleCheckState);
+
+    tb = addToolBar(tr("Format Actions"));
+    tb->setAllowedAreas(Qt::TopToolBarArea | Qt::BottomToolBarArea);
+    addToolBarBreak(Qt::TopToolBarArea);
+    addToolBar(tb);
+
+    comboStyle = new QComboBox(tb);
+    tb->addWidget(comboStyle);
+    comboStyle->addItems({"Standard",
+                          "Bullet List (Disc)",
+                          "Bullet List (Circle)",
+                          "Bullet List (Square)",
+                          "Task List (Unchecked)",
+                          "Task List (Checked)",
+                          "Ordered List (Decimal)",
+                          "Ordered List (Alpha lower)",
+                          "Ordered List (Alpha upper)",
+                          "Ordered List (Roman lower)",
+                          "Ordered List (Roman upper)",
+                          "Heading 1",
+                          "Heading 2",
+                          "Heading 3",
+                          "Heading 4",
+                          "Heading 5",
+                          "Heading 6"}),
+
+    connect(comboStyle, &QComboBox::activated, this, &TextEdit::textStyle);
+
+    comboFont = new QFontComboBox(tb);
+    tb->addWidget(comboFont);
+    connect(comboFont, &QComboBox::textActivated, this, &TextEdit::textFamily);
+
+    comboSize = new QComboBox(tb);
+    comboSize->setObjectName("comboSize");
+    tb->addWidget(comboSize);
+    comboSize->setEditable(true);
+
+    const QList<int> standardSizes = QFontDatabase::standardSizes();
+    for (int size : standardSizes)
+        comboSize->addItem(QString::number(size));
+    comboSize->setCurrentIndex(standardSizes.indexOf(QApplication::font().pointSize()));
+
+    connect(comboSize, &QComboBox::textActivated, this, &TextEdit::textSize);
+}
+
+bool TextEdit::load(const QString &f)
+{
+    if (!QFile::exists(f))
+        return false;
+    QFile file(f);
+    if (!file.open(QFile::ReadOnly))
+        return false;
+
+    QByteArray data = file.readAll();
+    QMimeDatabase db;
+    const QString &mimeTypeName = db.mimeTypeForFileNameAndData(f, data).name();
+    if (mimeTypeName == u"text/html") {
+        auto encoding = QStringDecoder::encodingForHtml(data);
+        QString str = QStringDecoder(encoding ? *encoding : QStringDecoder::Utf8)(data);
+        QUrl fileUrl = f.startsWith(u':') ? QUrl(f) : QUrl::fromLocalFile(f);
+        textEdit->document()->setBaseUrl(fileUrl.adjusted(QUrl::RemoveFilename));
+        textEdit->setHtml(str);
+#if QT_CONFIG(textmarkdownreader)
+    } else if (mimeTypeName == u"text/markdown") {
+        textEdit->setMarkdown(QString::fromUtf8(data));
+#endif
+    } else {
+        textEdit->setPlainText(QString::fromUtf8(data));
+    }
+
+    setCurrentFileName(f);
+    return true;
+}
+
+bool TextEdit::maybeSave()
+{
+    if (!textEdit->document()->isModified())
+        return true;
+
+    const QMessageBox::StandardButton ret =
+        QMessageBox::warning(this, QCoreApplication::applicationName(),
+                             tr("The document has been modified.\n"
+                                "Do you want to save your changes?"),
+                             QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel);
+    if (ret == QMessageBox::Save)
+        return fileSave();
+    if (ret == QMessageBox::Cancel)
+        return false;
+    return true;
+}
+
+void TextEdit::setCurrentFileName(const QString &fileName)
+{
+    this->fileName = fileName;
+    textEdit->document()->setModified(false);
+
+    QString shownName;
+    if (fileName.isEmpty())
+        shownName = "untitled.txt";
+    else
+        shownName = QFileInfo(fileName).fileName();
+
+    setWindowTitle(tr("%1[*] - %2").arg(shownName, QCoreApplication::applicationName()));
+    setWindowModified(false);
+}
+
+void TextEdit::fileNew()
+{
+    if (maybeSave()) {
+        textEdit->clear();
+        setCurrentFileName({});
+    }
+}
+
+void TextEdit::fileOpen()
+{
+    QFileDialog fileDialog(this, tr("Open File..."));
+    fileDialog.setAcceptMode(QFileDialog::AcceptOpen);
+    fileDialog.setFileMode(QFileDialog::ExistingFile);
+    fileDialog.setMimeTypeFilters({
+#if QT_CONFIG(texthtmlparser)
+                                   "text/html",
+#endif
+#if QT_CONFIG(textmarkdownreader)
+
+                                   "text/markdown",
+#endif
+                                   "text/plain"});
+    if (fileDialog.exec() != QDialog::Accepted)
+        return;
+    const QString fn = fileDialog.selectedFiles().constFirst();
+    if (load(fn))
+        statusBar()->showMessage(tr("Opened \"%1\"").arg(QDir::toNativeSeparators(fn)));
+    else
+        statusBar()->showMessage(tr("Could not open \"%1\"").arg(QDir::toNativeSeparators(fn)));
+}
+
+bool TextEdit::fileSave()
+{
+    if (fileName.isEmpty() || fileName.startsWith(u":/"))
+        return fileSaveAs();
+
+    QTextDocumentWriter writer(fileName);
+    bool success = writer.write(textEdit->document());
+    if (success) {
+        textEdit->document()->setModified(false);
+        statusBar()->showMessage(tr("Wrote \"%1\"").arg(QDir::toNativeSeparators(fileName)));
+    } else {
+        statusBar()->showMessage(tr("Could not write to file \"%1\"")
+                                 .arg(QDir::toNativeSeparators(fileName)));
+    }
+    return success;
+}
+
+bool TextEdit::fileSaveAs()
+{
+    QFileDialog fileDialog(this, tr("Save as..."));
+    fileDialog.setAcceptMode(QFileDialog::AcceptSave);
+    QStringList mimeTypes{"text/plain",
+#if QT_CONFIG(textodfwriter)
+                          "application/vnd.oasis.opendocument.text",
+#endif
+#if QT_CONFIG(textmarkdownwriter)
+                           "text/markdown",
+#endif
+                           "text/html"};
+    fileDialog.setMimeTypeFilters(mimeTypes);
+#if QT_CONFIG(textodfwriter)
+    fileDialog.setDefaultSuffix("odt");
+#endif
+    if (fileDialog.exec() != QDialog::Accepted)
+        return false;
+    const QString fn = fileDialog.selectedFiles().constFirst();
+    setCurrentFileName(fn);
+    return fileSave();
+}
+
+void TextEdit::filePrint()
+{
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printdialog)
+    QPrinter printer(QPrinter::HighResolution);
+    QPrintDialog dlg(&printer, this);
+    if (textEdit->textCursor().hasSelection())
+        dlg.setOption(QAbstractPrintDialog::PrintSelection);
+    dlg.setWindowTitle(tr("Print Document"));
+    if (dlg.exec() == QDialog::Accepted)
+        textEdit->print(&printer);
+#endif
+}
+
+void TextEdit::filePrintPreview()
+{
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printpreviewdialog)
+    QPrinter printer(QPrinter::HighResolution);
+    QPrintPreviewDialog preview(&printer, this);
+    connect(&preview, &QPrintPreviewDialog::paintRequested, textEdit, &QTextEdit::print);
+    preview.exec();
+#endif
+}
+
+void TextEdit::filePrintPdf()
+{
+#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
+//! [0]
+    QFileDialog fileDialog(this, tr("Export PDF"));
+    fileDialog.setAcceptMode(QFileDialog::AcceptSave);
+    fileDialog.setMimeTypeFilters(QStringList("application/pdf"));
+    fileDialog.setDefaultSuffix("pdf");
+    if (fileDialog.exec() != QDialog::Accepted)
+        return;
+    QString pdfFileName = fileDialog.selectedFiles().constFirst();
+    QPrinter printer(QPrinter::HighResolution);
+    printer.setOutputFormat(QPrinter::PdfFormat);
+    printer.setOutputFileName(pdfFileName);
+    textEdit->document()->print(&printer);
+    statusBar()->showMessage(tr("Exported \"%1\"")
+                             .arg(QDir::toNativeSeparators(pdfFileName)));
+//! [0]
+#endif
+}
+
+void TextEdit::textBold()
+{
+    QTextCharFormat fmt;
+    fmt.setFontWeight(actionTextBold->isChecked() ? QFont::Bold : QFont::Normal);
+    mergeFormatOnWordOrSelection(fmt);
+}
+
+void TextEdit::textUnderline()
+{
+    QTextCharFormat fmt;
+    fmt.setFontUnderline(actionTextUnderline->isChecked());
+    mergeFormatOnWordOrSelection(fmt);
+}
+
+void TextEdit::textItalic()
+{
+    QTextCharFormat fmt;
+    fmt.setFontItalic(actionTextItalic->isChecked());
+    mergeFormatOnWordOrSelection(fmt);
+}
+
+void TextEdit::textFamily(const QString &f)
+{
+    QTextCharFormat fmt;
+    fmt.setFontFamilies({f});
+    mergeFormatOnWordOrSelection(fmt);
+}
+
+void TextEdit::textSize(const QString &p)
+{
+    qreal pointSize = p.toFloat();
+    if (pointSize > 0) {
+        QTextCharFormat fmt;
+        fmt.setFontPointSize(pointSize);
+        mergeFormatOnWordOrSelection(fmt);
+    }
+}
+
+void TextEdit::textStyle(int styleIndex)
+{
+    QTextCursor cursor = textEdit->textCursor();
+    QTextListFormat::Style style = QTextListFormat::ListStyleUndefined;
+    QTextBlockFormat::MarkerType marker = QTextBlockFormat::MarkerType::NoMarker;
+
+    switch (styleIndex) {
+    case 1:
+        style = QTextListFormat::ListDisc;
+        break;
+    case 2:
+        style = QTextListFormat::ListCircle;
+        break;
+    case 3:
+        style = QTextListFormat::ListSquare;
+        break;
+    case 4:
+        if (cursor.currentList())
+            style = cursor.currentList()->format().style();
+        else
+            style = QTextListFormat::ListDisc;
+        marker = QTextBlockFormat::MarkerType::Unchecked;
+        break;
+    case 5:
+        if (cursor.currentList())
+            style = cursor.currentList()->format().style();
+        else
+            style = QTextListFormat::ListDisc;
+        marker = QTextBlockFormat::MarkerType::Checked;
+        break;
+    case 6:
+        style = QTextListFormat::ListDecimal;
+        break;
+    case 7:
+        style = QTextListFormat::ListLowerAlpha;
+        break;
+    case 8:
+        style = QTextListFormat::ListUpperAlpha;
+        break;
+    case 9:
+        style = QTextListFormat::ListLowerRoman;
+        break;
+    case 10:
+        style = QTextListFormat::ListUpperRoman;
+        break;
+    default:
+        break;
+    }
+
+    cursor.beginEditBlock();
+
+    QTextBlockFormat blockFmt = cursor.blockFormat();
+
+    if (style == QTextListFormat::ListStyleUndefined) {
+        blockFmt.setObjectIndex(-1);
+        int headingLevel = styleIndex >= 11 ? styleIndex - 11 + 1 : 0; // H1 to H6, or Standard
+        blockFmt.setHeadingLevel(headingLevel);
+        cursor.setBlockFormat(blockFmt);
+
+        int sizeAdjustment = headingLevel ? 4 - headingLevel : 0; // H1 to H6: +3 to -2
+        QTextCharFormat fmt;
+        fmt.setFontWeight(headingLevel ? QFont::Bold : QFont::Normal);
+        fmt.setProperty(QTextFormat::FontSizeAdjustment, sizeAdjustment);
+        cursor.select(QTextCursor::LineUnderCursor);
+        cursor.mergeCharFormat(fmt);
+        textEdit->mergeCurrentCharFormat(fmt);
+    } else {
+        blockFmt.setMarker(marker);
+        cursor.setBlockFormat(blockFmt);
+        QTextListFormat listFmt;
+        if (cursor.currentList()) {
+            listFmt = cursor.currentList()->format();
+        } else {
+            listFmt.setIndent(blockFmt.indent() + 1);
+            blockFmt.setIndent(0);
+            cursor.setBlockFormat(blockFmt);
+        }
+        listFmt.setStyle(style);
+        cursor.createList(listFmt);
+    }
+
+    cursor.endEditBlock();
+}
+
+void TextEdit::textColor()
+{
+    QColor col = QColorDialog::getColor(textEdit->textColor(), this);
+    if (!col.isValid())
+        return;
+    QTextCharFormat fmt;
+    fmt.setForeground(col);
+    mergeFormatOnWordOrSelection(fmt);
+    colorChanged(col);
+}
+
+void TextEdit::underlineColor()
+{
+    QColor col = QColorDialog::getColor(Qt::black, this);
+    if (!col.isValid())
+        return;
+    QTextCharFormat fmt;
+    fmt.setUnderlineColor(col);
+    mergeFormatOnWordOrSelection(fmt);
+    colorChanged(col);
+}
+
+void TextEdit::textAlign(QAction *a)
+{
+    if (a == actionAlignLeft)
+        textEdit->setAlignment(Qt::AlignLeft | Qt::AlignAbsolute);
+    else if (a == actionAlignCenter)
+        textEdit->setAlignment(Qt::AlignHCenter);
+    else if (a == actionAlignRight)
+        textEdit->setAlignment(Qt::AlignRight | Qt::AlignAbsolute);
+    else if (a == actionAlignJustify)
+        textEdit->setAlignment(Qt::AlignJustify);
+}
+
+void TextEdit::setChecked(bool checked)
+{
+    textStyle(checked ? 5 : 4);
+}
+
+void TextEdit::indent()
+{
+    modifyIndentation(1);
+}
+
+void TextEdit::unindent()
+{
+    modifyIndentation(-1);
+}
+
+void TextEdit::modifyIndentation(int amount)
+{
+    QTextCursor cursor = textEdit->textCursor();
+    cursor.beginEditBlock();
+    if (cursor.currentList()) {
+        QTextListFormat listFmt = cursor.currentList()->format();
+        // See whether the line above is the list we want to move this item into,
+        // or whether we need a new list.
+        QTextCursor above(cursor);
+        above.movePosition(QTextCursor::Up);
+        if (above.currentList() && listFmt.indent() + amount == above.currentList()->format().indent()) {
+            above.currentList()->add(cursor.block());
+        } else {
+            listFmt.setIndent(listFmt.indent() + amount);
+            cursor.createList(listFmt);
+        }
+    } else {
+        QTextBlockFormat blockFmt = cursor.blockFormat();
+        blockFmt.setIndent(blockFmt.indent() + amount);
+        cursor.setBlockFormat(blockFmt);
+    }
+    cursor.endEditBlock();
+}
+
+void TextEdit::currentCharFormatChanged(const QTextCharFormat &format)
+{
+    fontChanged(format.font());
+    colorChanged(format.foreground().color());
+}
+
+void TextEdit::cursorPositionChanged()
+{
+    alignmentChanged(textEdit->alignment());
+    QTextList *list = textEdit->textCursor().currentList();
+    if (list) {
+        switch (list->format().style()) {
+        case QTextListFormat::ListDisc:
+            comboStyle->setCurrentIndex(1);
+            break;
+        case QTextListFormat::ListCircle:
+            comboStyle->setCurrentIndex(2);
+            break;
+        case QTextListFormat::ListSquare:
+            comboStyle->setCurrentIndex(3);
+            break;
+        case QTextListFormat::ListDecimal:
+            comboStyle->setCurrentIndex(6);
+            break;
+        case QTextListFormat::ListLowerAlpha:
+            comboStyle->setCurrentIndex(7);
+            break;
+        case QTextListFormat::ListUpperAlpha:
+            comboStyle->setCurrentIndex(8);
+            break;
+        case QTextListFormat::ListLowerRoman:
+            comboStyle->setCurrentIndex(9);
+            break;
+        case QTextListFormat::ListUpperRoman:
+            comboStyle->setCurrentIndex(10);
+            break;
+        default:
+            comboStyle->setCurrentIndex(-1);
+            break;
+        }
+        switch (textEdit->textCursor().block().blockFormat().marker()) {
+        case QTextBlockFormat::MarkerType::NoMarker:
+            actionToggleCheckState->setChecked(false);
+            break;
+        case QTextBlockFormat::MarkerType::Unchecked:
+            comboStyle->setCurrentIndex(4);
+            actionToggleCheckState->setChecked(false);
+            break;
+        case QTextBlockFormat::MarkerType::Checked:
+            comboStyle->setCurrentIndex(5);
+            actionToggleCheckState->setChecked(true);
+            break;
+        }
+    } else {
+        int headingLevel = textEdit->textCursor().blockFormat().headingLevel();
+        comboStyle->setCurrentIndex(headingLevel ? headingLevel + 10 : 0);
+    }
+}
+
+void TextEdit::clipboardDataChanged()
+{
+#ifndef QT_NO_CLIPBOARD
+    if (const QMimeData *md = QGuiApplication::clipboard()->mimeData())
+        actionPaste->setEnabled(md->hasText());
+#endif
+}
+
+void TextEdit::about()
+{
+    QMessageBox::about(this, tr("About"), tr("This example demonstrates Qt's "
+        "rich text editing facilities in action, providing an example "
+        "document for you to experiment with."));
+}
+
+void TextEdit::mergeFormatOnWordOrSelection(const QTextCharFormat &format)
+{
+    QTextCursor cursor = textEdit->textCursor();
+    if (!cursor.hasSelection())
+        cursor.select(QTextCursor::WordUnderCursor);
+    cursor.mergeCharFormat(format);
+    textEdit->mergeCurrentCharFormat(format);
+}
+
+void TextEdit::fontChanged(const QFont &f)
+{
+    comboFont->setCurrentIndex(comboFont->findText(QFontInfo(f).family()));
+    comboSize->setCurrentIndex(comboSize->findText(QString::number(f.pointSize())));
+    actionTextBold->setChecked(f.bold());
+    actionTextItalic->setChecked(f.italic());
+    actionTextUnderline->setChecked(f.underline());
+}
+
+void TextEdit::colorChanged(const QColor &c)
+{
+    QPixmap pix(16, 16);
+    pix.fill(c);
+    actionTextColor->setIcon(pix);
+}
+
+void TextEdit::alignmentChanged(Qt::Alignment a)
+{
+    if (a.testFlag(Qt::AlignLeft))
+        actionAlignLeft->setChecked(true);
+    else if (a.testFlag(Qt::AlignHCenter))
+        actionAlignCenter->setChecked(true);
+    else if (a.testFlag(Qt::AlignRight))
+        actionAlignRight->setChecked(true);
+    else if (a.testFlag(Qt::AlignJustify))
+        actionAlignJustify->setChecked(true);
+}
+

examples/widgets/richtext/textedit/textedit.h

@@ -0,0 +1,103 @@
+// Copyright (C) 2021 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef TEXTEDIT_H
+#define TEXTEDIT_H
+
+#include <QMainWindow>
+
+QT_BEGIN_NAMESPACE
+class QAction;
+class QComboBox;
+class QFontComboBox;
+class QTextEdit;
+class QTextCharFormat;
+class QMenu;
+class QPrinter;
+QT_END_NAMESPACE
+
+class TextEdit : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    TextEdit(QWidget *parent = nullptr);
+
+    bool load(const QString &f);
+
+public slots:
+    void fileNew();
+
+protected:
+    void closeEvent(QCloseEvent *e) override;
+
+private slots:
+    void fileOpen();
+    bool fileSave();
+    bool fileSaveAs();
+    void filePrint();
+    void filePrintPreview();
+    void filePrintPdf();
+
+    void textBold();
+    void textUnderline();
+    void textItalic();
+    void textFamily(const QString &f);
+    void textSize(const QString &p);
+    void textStyle(int styleIndex);
+    void textColor();
+    void underlineColor();
+    void textAlign(QAction *a);
+    void setChecked(bool checked);
+    void indent();
+    void unindent();
+
+    void currentCharFormatChanged(const QTextCharFormat &format);
+    void cursorPositionChanged();
+
+    void clipboardDataChanged();
+    void about();
+
+private:
+    void setupFileActions();
+    void setupEditActions();
+    void setupTextActions();
+    bool maybeSave();
+    void setCurrentFileName(const QString &fileName);
+    void modifyIndentation(int amount);
+
+    void mergeFormatOnWordOrSelection(const QTextCharFormat &format);
+    void fontChanged(const QFont &f);
+    void colorChanged(const QColor &c);
+    void alignmentChanged(Qt::Alignment a);
+
+    QAction *actionSave;
+    QAction *actionTextBold;
+    QAction *actionTextUnderline;
+    QAction *actionTextItalic;
+    QAction *actionTextColor;
+    QAction *actionUnderlineColor;
+    QAction *actionAlignLeft;
+    QAction *actionAlignCenter;
+    QAction *actionAlignRight;
+    QAction *actionAlignJustify;
+    QAction *actionIndentLess;
+    QAction *actionIndentMore;
+    QAction *actionToggleCheckState;
+    QAction *actionUndo;
+    QAction *actionRedo;
+#ifndef QT_NO_CLIPBOARD
+    QAction *actionCut;
+    QAction *actionCopy;
+    QAction *actionPaste;
+#endif
+
+    QComboBox *comboStyle;
+    QFontComboBox *comboFont;
+    QComboBox *comboSize;
+
+    QString fileName;
+    QTextEdit *textEdit;
+};
+
+#endif // TEXTEDIT_H

examples/widgets/richtext/textedit/textedit.pro

@@ -0,0 +1,22 @@
+QT += widgets
+requires(qtConfig(filedialog))
+qtHaveModule(printsupport): QT += printsupport
+
+TEMPLATE        = app
+TARGET          = textedit
+
+HEADERS         = textedit.h
+SOURCES         = textedit.cpp \
+                  main.cpp
+
+RESOURCES += textedit.qrc
+build_all:!build_pass {
+    CONFIG -= build_all
+    CONFIG += release
+}
+
+EXAMPLE_FILES = textedit.qdoc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/richtext/textedit
+INSTALLS += target

examples/widgets/richtext/textedit/textedit.qdoc

@@ -0,0 +1,20 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
+
+/*!   \page textedit-example.html
+
+  \ingroup examples
+  \title Text Edit Example
+
+  \brief This example displays a text editor with the user interface written
+  in pure C++.
+
+  A similar example which uses Qt Designer to produce the user
+  interface is in the \l {Qt Designer Manual}.
+
+
+  See \c{$QTDIR/examples/textedit} for the source code.
+
+*/
+
+

examples/widgets/richtext/textedit/textedit.qrc

@@ -0,0 +1,54 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/">
+  <file>images/logo32.png</file>
+  <file>images/mac/checkbox.png</file>
+  <file>images/mac/checkbox-checked.png</file>
+  <file>images/mac/editcopy.png</file>
+  <file>images/mac/editcut.png</file>
+  <file>images/mac/editpaste.png</file>
+  <file>images/mac/editredo.png</file>
+  <file>images/mac/editundo.png</file>
+  <file>images/mac/exportpdf.png</file>
+  <file>images/mac/filenew.png</file>
+  <file>images/mac/fileopen.png</file>
+  <file>images/mac/fileprint.png</file>
+  <file>images/mac/filesave.png</file>
+  <file>images/mac/format-indent-less.png</file>
+  <file>images/mac/format-indent-more.png</file>
+  <file>images/mac/textbold.png</file>
+  <file>images/mac/textcenter.png</file>
+  <file>images/mac/textitalic.png</file>
+  <file>images/mac/textjustify.png</file>
+  <file>images/mac/textleft.png</file>
+  <file>images/mac/textright.png</file>
+  <file>images/mac/textunder.png</file>
+  <file>images/mac/textundercolor.png</file>
+  <file>images/mac/zoomin.png</file>
+  <file>images/mac/zoomout.png</file>
+  <file>images/win/checkbox.png</file>
+  <file>images/win/checkbox-checked.png</file>
+  <file>images/win/editcopy.png</file>
+  <file>images/win/editcut.png</file>
+  <file>images/win/editpaste.png</file>
+  <file>images/win/editredo.png</file>
+  <file>images/win/editundo.png</file>
+  <file>images/win/exportpdf.png</file>
+  <file>images/win/filenew.png</file>
+  <file>images/win/fileopen.png</file>
+  <file>images/win/fileprint.png</file>
+  <file>images/win/filesave.png</file>
+  <file>images/win/format-indent-less.png</file>
+  <file>images/win/format-indent-more.png</file>
+  <file>images/win/textbold.png</file>
+  <file>images/win/textcenter.png</file>
+  <file>images/win/textitalic.png</file>
+  <file>images/win/textjustify.png</file>
+  <file>images/win/textleft.png</file>
+  <file>images/win/textright.png</file>
+  <file>images/win/textunder.png</file>
+  <file>images/win/textundercolor.png</file>
+  <file>images/win/zoomin.png</file>
+  <file>images/win/zoomout.png</file>
+  <file>example.html</file>
+</qresource>
+</RCC>