qt-everywhere-src-5.15.1/qtbase/tests/manual/qlocale/calendar.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2017 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the test suite of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:GPL-EXCEPT$
 ** 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.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3 as published by the Free Software
 ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
 ** included in the packaging of this file. Please review the following
 ** information to ensure the GNU General Public License requirements will
 ** be met: https://www.gnu.org/licenses/gpl-3.0.html.
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "calendar.h"

 #include <QComboBox>
 #include <QGridLayout>
 #include <QGroupBox>
 #include <QCalendarWidget>
 #include <QLabel>
 #include <QDateEdit>
 #include <QCheckBox>
 #include <QTextCharFormat>

 CalendarWidget::CalendarWidget()
 {
     createPreviewGroupBox();
     createGeneralOptionsGroupBox();
     createDatesGroupBox();
     createTextFormatsGroupBox();

     QGridLayout *layout = new QGridLayout;
     layout->addWidget(previewGroupBox, 0, 0);
     layout->addWidget(generalOptionsGroupBox, 0, 1);
     layout->addWidget(datesGroupBox, 1, 0);
     layout->addWidget(textFormatsGroupBox, 1, 1);
     layout->setSizeConstraint(QLayout::SetFixedSize);
     setLayout(layout);

     previewLayout->setRowMinimumHeight(0, calendar->sizeHint().height());
     previewLayout->setColumnMinimumWidth(0, calendar->sizeHint().width());

     setWindowTitle(tr("Calendar Widget"));
 }

 void CalendarWidget::localeChanged(QLocale locale)
 {
     calendar->setLocale(locale);
     firstDayCombo->setCurrentIndex(locale.firstDayOfWeek()-1);
     updateWeekendDays();
 }

 void CalendarWidget::firstDayChanged(int index)
 {
     calendar->setFirstDayOfWeek(Qt::DayOfWeek(
                                 firstDayCombo->itemData(index).toInt()));
 }

 void CalendarWidget::selectionModeChanged(int index)
 {
     calendar->setSelectionMode(QCalendarWidget::SelectionMode(
                                selectionModeCombo->itemData(index).toInt()));
 }

 void CalendarWidget::horizontalHeaderChanged(int index)
 {
     calendar->setHorizontalHeaderFormat(QCalendarWidget::HorizontalHeaderFormat(
         horizontalHeaderCombo->itemData(index).toInt()));
 }

 void CalendarWidget::verticalHeaderChanged(int index)
 {
     calendar->setVerticalHeaderFormat(QCalendarWidget::VerticalHeaderFormat(
         verticalHeaderCombo->itemData(index).toInt()));
 }

 void CalendarWidget::selectedDateChanged()
 {
     currentDateEdit->setDate(calendar->selectedDate());
 }

 void CalendarWidget::minimumDateChanged(QDate date)
 {
     calendar->setMinimumDate(date);
     maximumDateEdit->setDate(calendar->maximumDate());
 }

 void CalendarWidget::maximumDateChanged(QDate date)
 {
     calendar->setMaximumDate(date);
     minimumDateEdit->setDate(calendar->minimumDate());
 }

 bool CalendarWidget::isWeekendDay(Qt::DayOfWeek day) {
     QList<Qt::DayOfWeek> week = calendar->locale().weekdays();
     return !week.contains(day);
 }

 void CalendarWidget::updateWeekendDays() {
     QTextCharFormat weekFormat, weekendFormat;
     weekFormat.setForeground(qvariant_cast<QColor>(
         weekdayColorCombo->itemData(weekdayColorCombo->currentIndex())));
     weekendFormat.setForeground(qvariant_cast<QColor>(
         weekendColorCombo->itemData(weekendColorCombo->currentIndex())));

     calendar->setWeekdayTextFormat(Qt::Monday, isWeekendDay(Qt::Monday) ? weekendFormat : weekFormat);
     calendar->setWeekdayTextFormat(Qt::Tuesday, isWeekendDay(Qt::Tuesday) ? weekendFormat : weekFormat);
     calendar->setWeekdayTextFormat(Qt::Wednesday, isWeekendDay(Qt::Wednesday) ? weekendFormat : weekFormat);
     calendar->setWeekdayTextFormat(Qt::Thursday, isWeekendDay(Qt::Thursday) ? weekendFormat : weekFormat);
     calendar->setWeekdayTextFormat(Qt::Friday, isWeekendDay(Qt::Friday) ? weekendFormat : weekFormat);
     calendar->setWeekdayTextFormat(Qt::Saturday, isWeekendDay(Qt::Saturday) ? weekendFormat : weekFormat);
     calendar->setWeekdayTextFormat(Qt::Sunday, isWeekendDay(Qt::Sunday) ? weekendFormat : weekFormat);
 }

 void CalendarWidget::weekdayFormatChanged()
 {
     updateWeekendDays();
 }

 void CalendarWidget::weekendFormatChanged()
 {
     updateWeekendDays();
 }

 void CalendarWidget::reformatHeaders()
 {
     QString text = headerTextFormatCombo->currentText();
     QTextCharFormat format;

     if (text == tr("Bold")) {
         format.setFontWeight(QFont::Bold);
     } else if (text == tr("Italic")) {
         format.setFontItalic(true);
     } else if (text == tr("Green")) {
         format.setForeground(Qt::green);
     }
     calendar->setHeaderTextFormat(format);
 }

 void CalendarWidget::reformatCalendarPage()
 {
     if (firstFridayCheckBox->isChecked()) {
         QDate firstFriday(calendar->yearShown(), calendar->monthShown(), 1);
         while (firstFriday.dayOfWeek() != Qt::Friday)
             firstFriday = firstFriday.addDays(1);
         QTextCharFormat firstFridayFormat;
         firstFridayFormat.setForeground(Qt::blue);
         calendar->setDateTextFormat(firstFriday, firstFridayFormat);
     }

     //May First in Red takes precedence
     if (mayFirstCheckBox->isChecked()) {
         const QDate mayFirst(calendar->yearShown(), 5, 1);
         QTextCharFormat mayFirstFormat;
         mayFirstFormat.setForeground(Qt::red);
         calendar->setDateTextFormat(mayFirst, mayFirstFormat);
     }
 }

 void CalendarWidget::createPreviewGroupBox()
 {
     previewGroupBox = new QGroupBox(tr("Preview"));

     calendar = new QCalendarWidget;
     calendar->setMinimumDate(QDate(1900, 1, 1));
     calendar->setMaximumDate(QDate(3000, 1, 1));
     calendar->setGridVisible(true);

     connect(calendar, SIGNAL(currentPageChanged(int,int)),
             this, SLOT(reformatCalendarPage()));

     previewLayout = new QGridLayout;
     previewLayout->addWidget(calendar, 0, 0, Qt::AlignCenter);
     previewGroupBox->setLayout(previewLayout);
 }

 void CalendarWidget::createGeneralOptionsGroupBox()
 {
     generalOptionsGroupBox = new QGroupBox(tr("General Options"));

     firstDayCombo = new QComboBox;
     firstDayCombo->addItem(tr("Monday"), Qt::Monday);
     firstDayCombo->addItem(tr("Tuesday"), Qt::Tuesday);
     firstDayCombo->addItem(tr("Wednesday"), Qt::Wednesday);
     firstDayCombo->addItem(tr("Thursday"), Qt::Thursday);
     firstDayCombo->addItem(tr("Friday"), Qt::Friday);
     firstDayCombo->addItem(tr("Saturday"), Qt::Saturday);
     firstDayCombo->addItem(tr("Sunday"), Qt::Sunday);

     firstDayLabel = new QLabel(tr("Wee&k starts on:"));
     firstDayLabel->setBuddy(firstDayCombo);

     selectionModeCombo = new QComboBox;
     selectionModeCombo->addItem(tr("Single selection"),
                                 QCalendarWidget::SingleSelection);
     selectionModeCombo->addItem(tr("None"), QCalendarWidget::NoSelection);

     selectionModeLabel = new QLabel(tr("&Selection mode:"));
     selectionModeLabel->setBuddy(selectionModeCombo);

     gridCheckBox = new QCheckBox(tr("&Grid"));
     gridCheckBox->setChecked(calendar->isGridVisible());

     navigationCheckBox = new QCheckBox(tr("&Navigation bar"));
     navigationCheckBox->setChecked(true);

     horizontalHeaderCombo = new QComboBox;
     horizontalHeaderCombo->addItem(tr("Single letter day names"),
                                    QCalendarWidget::SingleLetterDayNames);
     horizontalHeaderCombo->addItem(tr("Short day names"),
                                    QCalendarWidget::ShortDayNames);
     horizontalHeaderCombo->addItem(tr("None"),
                                    QCalendarWidget::NoHorizontalHeader);
     horizontalHeaderCombo->setCurrentIndex(1);

     horizontalHeaderLabel = new QLabel(tr("&Horizontal header:"));
     horizontalHeaderLabel->setBuddy(horizontalHeaderCombo);

     verticalHeaderCombo = new QComboBox;
     verticalHeaderCombo->addItem(tr("ISO week numbers"),
                                  QCalendarWidget::ISOWeekNumbers);
     verticalHeaderCombo->addItem(tr("None"), QCalendarWidget::NoVerticalHeader);

     verticalHeaderLabel = new QLabel(tr("&Vertical header:"));
     verticalHeaderLabel->setBuddy(verticalHeaderCombo);

     connect(firstDayCombo, SIGNAL(currentIndexChanged(int)),
             this, SLOT(firstDayChanged(int)));
     connect(selectionModeCombo, SIGNAL(currentIndexChanged(int)),
             this, SLOT(selectionModeChanged(int)));
     connect(gridCheckBox, SIGNAL(toggled(bool)),
             calendar, SLOT(setGridVisible(bool)));
     connect(navigationCheckBox, SIGNAL(toggled(bool)),
             calendar, SLOT(setNavigationBarVisible(bool)));
     connect(horizontalHeaderCombo, SIGNAL(currentIndexChanged(int)),
             this, SLOT(horizontalHeaderChanged(int)));
     connect(verticalHeaderCombo, SIGNAL(currentIndexChanged(int)),
             this, SLOT(verticalHeaderChanged(int)));

     QHBoxLayout *checkBoxLayout = new QHBoxLayout;
     checkBoxLayout->addWidget(gridCheckBox);
     checkBoxLayout->addStretch();
     checkBoxLayout->addWidget(navigationCheckBox);

     QGridLayout *outerLayout = new QGridLayout;
     outerLayout->addWidget(firstDayLabel, 0, 0);
     outerLayout->addWidget(firstDayCombo, 0, 1);
     outerLayout->addWidget(selectionModeLabel, 1, 0);
     outerLayout->addWidget(selectionModeCombo, 1, 1);
     outerLayout->addLayout(checkBoxLayout, 2, 0, 1, 2);
     outerLayout->addWidget(horizontalHeaderLabel, 3, 0);
     outerLayout->addWidget(horizontalHeaderCombo, 3, 1);
     outerLayout->addWidget(verticalHeaderLabel, 4, 0);
     outerLayout->addWidget(verticalHeaderCombo, 4, 1);
     generalOptionsGroupBox->setLayout(outerLayout);

     firstDayChanged(firstDayCombo->currentIndex());
     selectionModeChanged(selectionModeCombo->currentIndex());
     horizontalHeaderChanged(horizontalHeaderCombo->currentIndex());
     verticalHeaderChanged(verticalHeaderCombo->currentIndex());
 }

 void CalendarWidget::createDatesGroupBox()
 {
     datesGroupBox = new QGroupBox(tr("Dates"));

     minimumDateEdit = new QDateEdit;
     minimumDateEdit->setDisplayFormat("MMM d yyyy");
     minimumDateEdit->setDateRange(calendar->minimumDate(),
                                   calendar->maximumDate());
     minimumDateEdit->setDate(calendar->minimumDate());

     minimumDateLabel = new QLabel(tr("&Minimum Date:"));
     minimumDateLabel->setBuddy(minimumDateEdit);

     currentDateEdit = new QDateEdit;
     currentDateEdit->setDisplayFormat("MMM d yyyy");
     currentDateEdit->setDate(calendar->selectedDate());
     currentDateEdit->setDateRange(calendar->minimumDate(),
                                   calendar->maximumDate());

     currentDateLabel = new QLabel(tr("&Current Date:"));
     currentDateLabel->setBuddy(currentDateEdit);

     maximumDateEdit = new QDateEdit;
     maximumDateEdit->setDisplayFormat("MMM d yyyy");
     maximumDateEdit->setDateRange(calendar->minimumDate(),
                                   calendar->maximumDate());
     maximumDateEdit->setDate(calendar->maximumDate());

     maximumDateLabel = new QLabel(tr("Ma&ximum Date:"));
     maximumDateLabel->setBuddy(maximumDateEdit);

     connect(currentDateEdit, SIGNAL(dateChanged(QDate)),
             calendar, SLOT(setSelectedDate(QDate)));
     connect(calendar, SIGNAL(selectionChanged()),
             this, SLOT(selectedDateChanged()));
     connect(minimumDateEdit, SIGNAL(dateChanged(QDate)),
             this, SLOT(minimumDateChanged(QDate)));
     connect(maximumDateEdit, SIGNAL(dateChanged(QDate)),
             this, SLOT(maximumDateChanged(QDate)));

     QGridLayout *dateBoxLayout = new QGridLayout;
     dateBoxLayout->addWidget(currentDateLabel, 1, 0);
     dateBoxLayout->addWidget(currentDateEdit, 1, 1);
     dateBoxLayout->addWidget(minimumDateLabel, 0, 0);
     dateBoxLayout->addWidget(minimumDateEdit, 0, 1);
     dateBoxLayout->addWidget(maximumDateLabel, 2, 0);
     dateBoxLayout->addWidget(maximumDateEdit, 2, 1);
     dateBoxLayout->setRowStretch(3, 1);

     datesGroupBox->setLayout(dateBoxLayout);
 }

 void CalendarWidget::createTextFormatsGroupBox()
 {
     textFormatsGroupBox = new QGroupBox(tr("Text Formats"));

     weekdayColorCombo = createColorComboBox();
     weekdayColorCombo->setCurrentIndex(
             weekdayColorCombo->findText(tr("Black")));

     weekdayColorLabel = new QLabel(tr("&Weekday color:"));
     weekdayColorLabel->setBuddy(weekdayColorCombo);

     weekendColorCombo = createColorComboBox();
     weekendColorCombo->setCurrentIndex(
             weekendColorCombo->findText(tr("Red")));

     weekendColorLabel = new QLabel(tr("Week&end color:"));
     weekendColorLabel->setBuddy(weekendColorCombo);

     headerTextFormatCombo = new QComboBox;
     headerTextFormatCombo->addItem(tr("Bold"));
     headerTextFormatCombo->addItem(tr("Italic"));
     headerTextFormatCombo->addItem(tr("Plain"));

     headerTextFormatLabel = new QLabel(tr("&Header text:"));
     headerTextFormatLabel->setBuddy(headerTextFormatCombo);

     firstFridayCheckBox = new QCheckBox(tr("&First Friday in blue"));

     mayFirstCheckBox = new QCheckBox(tr("May &1 in red"));

     connect(weekdayColorCombo, SIGNAL(currentIndexChanged(int)),
             this, SLOT(weekdayFormatChanged()));
     connect(weekendColorCombo, SIGNAL(currentIndexChanged(int)),
             this, SLOT(weekendFormatChanged()));
     connect(headerTextFormatCombo, SIGNAL(currentIndexChanged(QString)),
             this, SLOT(reformatHeaders()));
     connect(firstFridayCheckBox, SIGNAL(toggled(bool)),
             this, SLOT(reformatCalendarPage()));
     connect(mayFirstCheckBox, SIGNAL(toggled(bool)),
             this, SLOT(reformatCalendarPage()));

     QHBoxLayout *checkBoxLayout = new QHBoxLayout;
     checkBoxLayout->addWidget(firstFridayCheckBox);
     checkBoxLayout->addStretch();
     checkBoxLayout->addWidget(mayFirstCheckBox);

     QGridLayout *outerLayout = new QGridLayout;
     outerLayout->addWidget(weekdayColorLabel, 0, 0);
     outerLayout->addWidget(weekdayColorCombo, 0, 1);
     outerLayout->addWidget(weekendColorLabel, 1, 0);
     outerLayout->addWidget(weekendColorCombo, 1, 1);
     outerLayout->addWidget(headerTextFormatLabel, 2, 0);
     outerLayout->addWidget(headerTextFormatCombo, 2, 1);
     outerLayout->addLayout(checkBoxLayout, 3, 0, 1, 2);
     textFormatsGroupBox->setLayout(outerLayout);

     weekdayFormatChanged();
     weekendFormatChanged();
     reformatHeaders();
     reformatCalendarPage();
 }

 QComboBox *CalendarWidget::createColorComboBox()
 {
     QComboBox *comboBox = new QComboBox;
     comboBox->addItem(tr("Red"), QColor(Qt::red));
     comboBox->addItem(tr("Blue"), QColor(Qt::blue));
     comboBox->addItem(tr("Black"), QColor(Qt::black));
     comboBox->addItem(tr("Magenta"), QColor(Qt::magenta));
     return comboBox;
 }
	/****************************************************************************
	**
	** Copyright (C) 2017 The Qt Company Ltd.
	** Contact: https://www.qt.io/licensing/
	**
	** This file is part of the test suite of the Qt Toolkit.
	**
	** $QT_BEGIN_LICENSE:GPL-EXCEPT$
	** 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.
	**
	** GNU General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU
	** General Public License version 3 as published by the Free Software
	** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
	** included in the packaging of this file. Please review the following
	** information to ensure the GNU General Public License requirements will
	** be met: https://www.gnu.org/licenses/gpl-3.0.html.
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#include "calendar.h"

	#include <QComboBox>
	#include <QGridLayout>
	#include <QGroupBox>
	#include <QCalendarWidget>
	#include <QLabel>
	#include <QDateEdit>
	#include <QCheckBox>
	#include <QTextCharFormat>

	CalendarWidget::CalendarWidget()
	{
	createPreviewGroupBox();
	createGeneralOptionsGroupBox();
	createDatesGroupBox();
	createTextFormatsGroupBox();

	QGridLayout *layout = new QGridLayout;
	layout->addWidget(previewGroupBox, 0, 0);
	layout->addWidget(generalOptionsGroupBox, 0, 1);
	layout->addWidget(datesGroupBox, 1, 0);
	layout->addWidget(textFormatsGroupBox, 1, 1);
	layout->setSizeConstraint(QLayout::SetFixedSize);
	setLayout(layout);

	previewLayout->setRowMinimumHeight(0, calendar->sizeHint().height());
	previewLayout->setColumnMinimumWidth(0, calendar->sizeHint().width());

	setWindowTitle(tr("Calendar Widget"));
	}

	void CalendarWidget::localeChanged(QLocale locale)
	{
	calendar->setLocale(locale);
	firstDayCombo->setCurrentIndex(locale.firstDayOfWeek()-1);
	updateWeekendDays();
	}

	void CalendarWidget::firstDayChanged(int index)
	{
	calendar->setFirstDayOfWeek(Qt::DayOfWeek(
	firstDayCombo->itemData(index).toInt()));
	}

	void CalendarWidget::selectionModeChanged(int index)
	{
	calendar->setSelectionMode(QCalendarWidget::SelectionMode(
	selectionModeCombo->itemData(index).toInt()));
	}

	void CalendarWidget::horizontalHeaderChanged(int index)
	{
	calendar->setHorizontalHeaderFormat(QCalendarWidget::HorizontalHeaderFormat(
	horizontalHeaderCombo->itemData(index).toInt()));
	}

	void CalendarWidget::verticalHeaderChanged(int index)
	{
	calendar->setVerticalHeaderFormat(QCalendarWidget::VerticalHeaderFormat(
	verticalHeaderCombo->itemData(index).toInt()));
	}

	void CalendarWidget::selectedDateChanged()
	{
	currentDateEdit->setDate(calendar->selectedDate());
	}

	void CalendarWidget::minimumDateChanged(QDate date)
	{
	calendar->setMinimumDate(date);
	maximumDateEdit->setDate(calendar->maximumDate());
	}

	void CalendarWidget::maximumDateChanged(QDate date)
	{
	calendar->setMaximumDate(date);
	minimumDateEdit->setDate(calendar->minimumDate());
	}

	bool CalendarWidget::isWeekendDay(Qt::DayOfWeek day) {
	QList<Qt::DayOfWeek> week = calendar->locale().weekdays();
	return !week.contains(day);
	}

	void CalendarWidget::updateWeekendDays() {
	QTextCharFormat weekFormat, weekendFormat;
	weekFormat.setForeground(qvariant_cast<QColor>(
	weekdayColorCombo->itemData(weekdayColorCombo->currentIndex())));
	weekendFormat.setForeground(qvariant_cast<QColor>(
	weekendColorCombo->itemData(weekendColorCombo->currentIndex())));

	calendar->setWeekdayTextFormat(Qt::Monday, isWeekendDay(Qt::Monday) ? weekendFormat : weekFormat);
	calendar->setWeekdayTextFormat(Qt::Tuesday, isWeekendDay(Qt::Tuesday) ? weekendFormat : weekFormat);
	calendar->setWeekdayTextFormat(Qt::Wednesday, isWeekendDay(Qt::Wednesday) ? weekendFormat : weekFormat);
	calendar->setWeekdayTextFormat(Qt::Thursday, isWeekendDay(Qt::Thursday) ? weekendFormat : weekFormat);
	calendar->setWeekdayTextFormat(Qt::Friday, isWeekendDay(Qt::Friday) ? weekendFormat : weekFormat);
	calendar->setWeekdayTextFormat(Qt::Saturday, isWeekendDay(Qt::Saturday) ? weekendFormat : weekFormat);
	calendar->setWeekdayTextFormat(Qt::Sunday, isWeekendDay(Qt::Sunday) ? weekendFormat : weekFormat);
	}

	void CalendarWidget::weekdayFormatChanged()
	{
	updateWeekendDays();
	}

	void CalendarWidget::weekendFormatChanged()
	{
	updateWeekendDays();
	}

	void CalendarWidget::reformatHeaders()
	{
	QString text = headerTextFormatCombo->currentText();
	QTextCharFormat format;

	if (text == tr("Bold")) {
	format.setFontWeight(QFont::Bold);
	} else if (text == tr("Italic")) {
	format.setFontItalic(true);
	} else if (text == tr("Green")) {
	format.setForeground(Qt::green);
	}
	calendar->setHeaderTextFormat(format);
	}

	void CalendarWidget::reformatCalendarPage()
	{
	if (firstFridayCheckBox->isChecked()) {
	QDate firstFriday(calendar->yearShown(), calendar->monthShown(), 1);
	while (firstFriday.dayOfWeek() != Qt::Friday)
	firstFriday = firstFriday.addDays(1);
	QTextCharFormat firstFridayFormat;
	firstFridayFormat.setForeground(Qt::blue);
	calendar->setDateTextFormat(firstFriday, firstFridayFormat);
	}

	//May First in Red takes precedence
	if (mayFirstCheckBox->isChecked()) {
	const QDate mayFirst(calendar->yearShown(), 5, 1);
	QTextCharFormat mayFirstFormat;
	mayFirstFormat.setForeground(Qt::red);
	calendar->setDateTextFormat(mayFirst, mayFirstFormat);
	}
	}

	void CalendarWidget::createPreviewGroupBox()
	{
	previewGroupBox = new QGroupBox(tr("Preview"));

	calendar = new QCalendarWidget;
	calendar->setMinimumDate(QDate(1900, 1, 1));
	calendar->setMaximumDate(QDate(3000, 1, 1));
	calendar->setGridVisible(true);

	connect(calendar, SIGNAL(currentPageChanged(int,int)),
	this, SLOT(reformatCalendarPage()));

	previewLayout = new QGridLayout;
	previewLayout->addWidget(calendar, 0, 0, Qt::AlignCenter);
	previewGroupBox->setLayout(previewLayout);
	}

	void CalendarWidget::createGeneralOptionsGroupBox()
	{
	generalOptionsGroupBox = new QGroupBox(tr("General Options"));

	firstDayCombo = new QComboBox;
	firstDayCombo->addItem(tr("Monday"), Qt::Monday);
	firstDayCombo->addItem(tr("Tuesday"), Qt::Tuesday);
	firstDayCombo->addItem(tr("Wednesday"), Qt::Wednesday);
	firstDayCombo->addItem(tr("Thursday"), Qt::Thursday);
	firstDayCombo->addItem(tr("Friday"), Qt::Friday);
	firstDayCombo->addItem(tr("Saturday"), Qt::Saturday);
	firstDayCombo->addItem(tr("Sunday"), Qt::Sunday);

	firstDayLabel = new QLabel(tr("Wee&k starts on:"));
	firstDayLabel->setBuddy(firstDayCombo);

	selectionModeCombo = new QComboBox;
	selectionModeCombo->addItem(tr("Single selection"),
	QCalendarWidget::SingleSelection);
	selectionModeCombo->addItem(tr("None"), QCalendarWidget::NoSelection);

	selectionModeLabel = new QLabel(tr("&Selection mode:"));
	selectionModeLabel->setBuddy(selectionModeCombo);

	gridCheckBox = new QCheckBox(tr("&Grid"));
	gridCheckBox->setChecked(calendar->isGridVisible());

	navigationCheckBox = new QCheckBox(tr("&Navigation bar"));
	navigationCheckBox->setChecked(true);

	horizontalHeaderCombo = new QComboBox;
	horizontalHeaderCombo->addItem(tr("Single letter day names"),
	QCalendarWidget::SingleLetterDayNames);
	horizontalHeaderCombo->addItem(tr("Short day names"),
	QCalendarWidget::ShortDayNames);
	horizontalHeaderCombo->addItem(tr("None"),
	QCalendarWidget::NoHorizontalHeader);
	horizontalHeaderCombo->setCurrentIndex(1);

	horizontalHeaderLabel = new QLabel(tr("&Horizontal header:"));
	horizontalHeaderLabel->setBuddy(horizontalHeaderCombo);

	verticalHeaderCombo = new QComboBox;
	verticalHeaderCombo->addItem(tr("ISO week numbers"),
	QCalendarWidget::ISOWeekNumbers);
	verticalHeaderCombo->addItem(tr("None"), QCalendarWidget::NoVerticalHeader);

	verticalHeaderLabel = new QLabel(tr("&Vertical header:"));
	verticalHeaderLabel->setBuddy(verticalHeaderCombo);

	connect(firstDayCombo, SIGNAL(currentIndexChanged(int)),
	this, SLOT(firstDayChanged(int)));
	connect(selectionModeCombo, SIGNAL(currentIndexChanged(int)),
	this, SLOT(selectionModeChanged(int)));
	connect(gridCheckBox, SIGNAL(toggled(bool)),
	calendar, SLOT(setGridVisible(bool)));
	connect(navigationCheckBox, SIGNAL(toggled(bool)),
	calendar, SLOT(setNavigationBarVisible(bool)));
	connect(horizontalHeaderCombo, SIGNAL(currentIndexChanged(int)),
	this, SLOT(horizontalHeaderChanged(int)));
	connect(verticalHeaderCombo, SIGNAL(currentIndexChanged(int)),
	this, SLOT(verticalHeaderChanged(int)));

	QHBoxLayout *checkBoxLayout = new QHBoxLayout;
	checkBoxLayout->addWidget(gridCheckBox);
	checkBoxLayout->addStretch();
	checkBoxLayout->addWidget(navigationCheckBox);

	QGridLayout *outerLayout = new QGridLayout;
	outerLayout->addWidget(firstDayLabel, 0, 0);
	outerLayout->addWidget(firstDayCombo, 0, 1);
	outerLayout->addWidget(selectionModeLabel, 1, 0);
	outerLayout->addWidget(selectionModeCombo, 1, 1);
	outerLayout->addLayout(checkBoxLayout, 2, 0, 1, 2);
	outerLayout->addWidget(horizontalHeaderLabel, 3, 0);
	outerLayout->addWidget(horizontalHeaderCombo, 3, 1);
	outerLayout->addWidget(verticalHeaderLabel, 4, 0);
	outerLayout->addWidget(verticalHeaderCombo, 4, 1);
	generalOptionsGroupBox->setLayout(outerLayout);

	firstDayChanged(firstDayCombo->currentIndex());
	selectionModeChanged(selectionModeCombo->currentIndex());
	horizontalHeaderChanged(horizontalHeaderCombo->currentIndex());
	verticalHeaderChanged(verticalHeaderCombo->currentIndex());
	}

	void CalendarWidget::createDatesGroupBox()
	{
	datesGroupBox = new QGroupBox(tr("Dates"));

	minimumDateEdit = new QDateEdit;
	minimumDateEdit->setDisplayFormat("MMM d yyyy");
	minimumDateEdit->setDateRange(calendar->minimumDate(),
	calendar->maximumDate());
	minimumDateEdit->setDate(calendar->minimumDate());

	minimumDateLabel = new QLabel(tr("&Minimum Date:"));
	minimumDateLabel->setBuddy(minimumDateEdit);

	currentDateEdit = new QDateEdit;
	currentDateEdit->setDisplayFormat("MMM d yyyy");
	currentDateEdit->setDate(calendar->selectedDate());
	currentDateEdit->setDateRange(calendar->minimumDate(),
	calendar->maximumDate());

	currentDateLabel = new QLabel(tr("&Current Date:"));
	currentDateLabel->setBuddy(currentDateEdit);

	maximumDateEdit = new QDateEdit;
	maximumDateEdit->setDisplayFormat("MMM d yyyy");
	maximumDateEdit->setDateRange(calendar->minimumDate(),
	calendar->maximumDate());
	maximumDateEdit->setDate(calendar->maximumDate());

	maximumDateLabel = new QLabel(tr("Ma&ximum Date:"));
	maximumDateLabel->setBuddy(maximumDateEdit);

	connect(currentDateEdit, SIGNAL(dateChanged(QDate)),
	calendar, SLOT(setSelectedDate(QDate)));
	connect(calendar, SIGNAL(selectionChanged()),
	this, SLOT(selectedDateChanged()));
	connect(minimumDateEdit, SIGNAL(dateChanged(QDate)),
	this, SLOT(minimumDateChanged(QDate)));
	connect(maximumDateEdit, SIGNAL(dateChanged(QDate)),
	this, SLOT(maximumDateChanged(QDate)));

	QGridLayout *dateBoxLayout = new QGridLayout;
	dateBoxLayout->addWidget(currentDateLabel, 1, 0);
	dateBoxLayout->addWidget(currentDateEdit, 1, 1);
	dateBoxLayout->addWidget(minimumDateLabel, 0, 0);
	dateBoxLayout->addWidget(minimumDateEdit, 0, 1);
	dateBoxLayout->addWidget(maximumDateLabel, 2, 0);
	dateBoxLayout->addWidget(maximumDateEdit, 2, 1);
	dateBoxLayout->setRowStretch(3, 1);

	datesGroupBox->setLayout(dateBoxLayout);
	}

	void CalendarWidget::createTextFormatsGroupBox()
	{
	textFormatsGroupBox = new QGroupBox(tr("Text Formats"));

	weekdayColorCombo = createColorComboBox();
	weekdayColorCombo->setCurrentIndex(
	weekdayColorCombo->findText(tr("Black")));

	weekdayColorLabel = new QLabel(tr("&Weekday color:"));
	weekdayColorLabel->setBuddy(weekdayColorCombo);

	weekendColorCombo = createColorComboBox();
	weekendColorCombo->setCurrentIndex(
	weekendColorCombo->findText(tr("Red")));

	weekendColorLabel = new QLabel(tr("Week&end color:"));
	weekendColorLabel->setBuddy(weekendColorCombo);

	headerTextFormatCombo = new QComboBox;
	headerTextFormatCombo->addItem(tr("Bold"));
	headerTextFormatCombo->addItem(tr("Italic"));
	headerTextFormatCombo->addItem(tr("Plain"));

	headerTextFormatLabel = new QLabel(tr("&Header text:"));
	headerTextFormatLabel->setBuddy(headerTextFormatCombo);

	firstFridayCheckBox = new QCheckBox(tr("&First Friday in blue"));

	mayFirstCheckBox = new QCheckBox(tr("May &1 in red"));

	connect(weekdayColorCombo, SIGNAL(currentIndexChanged(int)),
	this, SLOT(weekdayFormatChanged()));
	connect(weekendColorCombo, SIGNAL(currentIndexChanged(int)),
	this, SLOT(weekendFormatChanged()));
	connect(headerTextFormatCombo, SIGNAL(currentIndexChanged(QString)),
	this, SLOT(reformatHeaders()));
	connect(firstFridayCheckBox, SIGNAL(toggled(bool)),
	this, SLOT(reformatCalendarPage()));
	connect(mayFirstCheckBox, SIGNAL(toggled(bool)),
	this, SLOT(reformatCalendarPage()));

	QHBoxLayout *checkBoxLayout = new QHBoxLayout;
	checkBoxLayout->addWidget(firstFridayCheckBox);
	checkBoxLayout->addStretch();
	checkBoxLayout->addWidget(mayFirstCheckBox);

	QGridLayout *outerLayout = new QGridLayout;
	outerLayout->addWidget(weekdayColorLabel, 0, 0);
	outerLayout->addWidget(weekdayColorCombo, 0, 1);
	outerLayout->addWidget(weekendColorLabel, 1, 0);
	outerLayout->addWidget(weekendColorCombo, 1, 1);
	outerLayout->addWidget(headerTextFormatLabel, 2, 0);
	outerLayout->addWidget(headerTextFormatCombo, 2, 1);
	outerLayout->addLayout(checkBoxLayout, 3, 0, 1, 2);
	textFormatsGroupBox->setLayout(outerLayout);

	weekdayFormatChanged();
	weekendFormatChanged();
	reformatHeaders();
	reformatCalendarPage();
	}

	QComboBox *CalendarWidget::createColorComboBox()
	{
	QComboBox *comboBox = new QComboBox;
	comboBox->addItem(tr("Red"), QColor(Qt::red));
	comboBox->addItem(tr("Blue"), QColor(Qt::blue));
	comboBox->addItem(tr("Black"), QColor(Qt::black));
	comboBox->addItem(tr("Magenta"), QColor(Qt::magenta));
	return comboBox;
	}