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diff --git a/examples/widgets/richtext/calendar/mainwindow.cpp b/examples/widgets/richtext/calendar/mainwindow.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in
-** the documentation and/or other materials provided with the
-** distribution.
-** * Neither the name of The Qt Company Ltd nor the names of its
-** contributors may be used to endorse or promote products derived
-** from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#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]