Home · All Classes · All Functions · Overviews

mainwindow.cpp Example File
richtext/calendar/mainwindow.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain additional
 ** rights.  These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
 ** If you have questions regarding the use of this file, please contact
 ** Nokia at qt-info@nokia.com.
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtGui>

 #include "mainwindow.h"

 MainWindow::MainWindow()
 {
     selectedDate = QDate::currentDate();
     fontSize = 10;

     QWidget *centralWidget = new QWidget;

     QLabel *dateLabel = new QLabel(tr("Date:"));
     QComboBox *monthCombo = new QComboBox;

     for (int month = 1; month <= 12; ++month)
         monthCombo->addItem(QDate::longMonthName(month));

     QDateTimeEdit *yearEdit = new QDateTimeEdit;
     yearEdit->setDisplayFormat("yyyy");
     yearEdit->setDateRange(QDate(1753, 1, 1), QDate(8000, 1, 1));

     monthCombo->setCurrentIndex(selectedDate.month() - 1);
     yearEdit->setDate(selectedDate);

     QLabel *fontSizeLabel = new QLabel(tr("Font size:"));
     QSpinBox *fontSizeSpinBox = new QSpinBox;
     fontSizeSpinBox->setRange(1, 64);
     fontSizeSpinBox->setValue(10);

     editor = new QTextBrowser;
     insertCalendar();

     connect(monthCombo, SIGNAL(activated(int)), this, SLOT(setMonth(int)));
     connect(yearEdit, SIGNAL(dateChanged(QDate)), this, SLOT(setYear(QDate)));
     connect(fontSizeSpinBox, SIGNAL(valueChanged(int)),
             this, SLOT(setFontSize(int)));

     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);
 }

 void MainWindow::insertCalendar()
 {
     editor->clear();
     QTextCursor cursor = editor->textCursor();
     cursor.beginEditBlock();

     QDate date(selectedDate.year(), selectedDate.month(), 1);

     QTextTableFormat tableFormat;
     tableFormat.setAlignment(Qt::AlignHCenter);
     tableFormat.setBackground(QColor("#e0e0e0"));
     tableFormat.setCellPadding(2);
     tableFormat.setCellSpacing(4);
     QVector<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);

     QTextTable *table = cursor.insertTable(1, 7, tableFormat);

     QTextFrame *frame = cursor.currentFrame();
     QTextFrameFormat frameFormat = frame->frameFormat();
     frameFormat.setBorder(1);
     frame->setFrameFormat(frameFormat);

     QTextCharFormat format = cursor.charFormat();
     format.setFontPointSize(fontSize);

     QTextCharFormat boldFormat = format;
     boldFormat.setFontWeight(QFont::Bold);

     QTextCharFormat highlightedFormat = boldFormat;
     highlightedFormat.setBackground(Qt::yellow);

     for (int weekDay = 1; weekDay <= 7; ++weekDay) {
         QTextTableCell cell = table->cellAt(0, weekDay-1);
         QTextCursor cellCursor = cell.firstCursorPosition();
         cellCursor.insertText(QString("%1").arg(QDate::longDayName(weekDay)),
                               boldFormat);
     }

     table->insertRows(table->rows(), 1);

     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();
     setWindowTitle(tr("Calendar for %1 %2"
         ).arg(QDate::longMonthName(selectedDate.month())
         ).arg(selectedDate.year()));
 }

 void MainWindow::setFontSize(int size)
 {
     fontSize = size;
     insertCalendar();
 }

 void MainWindow::setMonth(int month)
 {
     selectedDate = QDate(selectedDate.year(), month + 1, selectedDate.day());
     insertCalendar();
 }

 void MainWindow::setYear(QDate date)
 {
     selectedDate = QDate(date.year(), selectedDate.month(), selectedDate.day());
     insertCalendar();
 }


Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.6.3