Qt C++

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** General Public License version 2.1 as published by the Free Software
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** Alternatively, this file may be used under the terms of the GNU
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** packaging of this file.  Please review the following information to
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****************************************************************************/
#ifndef WINDOW_H
#define WINDOW_H
#include 
QT_BEGIN_NAMESPACE
class QCalendarWidget;
class QCheckBox;
class QComboBox;
class QDate;
class QDateEdit;
class QGridLayout;
class QGroupBox;
class QLabel;
QT_END_NAMESPACE
class Window : public QWidget
{
    Q_OBJECT
public:
    Window();
private slots:
    void localeChanged(int index);
    void firstDayChanged(int index);
    void selectionModeChanged(int index);
    void horizontalHeaderChanged(int index);
    void verticalHeaderChanged(int index);
    void selectedDateChanged();
    void minimumDateChanged(const QDate &date);
    void maximumDateChanged(const QDate &date);
    void weekdayFormatChanged();
    void weekendFormatChanged();
    void reformatHeaders();
    void reformatCalendarPage();
private:
    void createPreviewGroupBox();
    void createGeneralOptionsGroupBox();
    void createDatesGroupBox();
    void createTextFormatsGroupBox();
    QComboBox *createColorComboBox();
    QGroupBox *previewGroupBox;
    QGridLayout *previewLayout;
    QCalendarWidget *calendar;
    QGroupBox *generalOptionsGroupBox;
    QLabel *localeLabel;
    QLabel *firstDayLabel;
    QLabel *selectionModeLabel;
    QLabel *horizontalHeaderLabel;
    QLabel *verticalHeaderLabel;
    QComboBox *localeCombo;
    QComboBox *firstDayCombo;
    QComboBox *selectionModeCombo;
    QCheckBox *gridCheckBox;
    QCheckBox *navigationCheckBox;
    QComboBox *horizontalHeaderCombo;
    QComboBox *verticalHeaderCombo;
    QGroupBox *datesGroupBox;
    QLabel *currentDateLabel;
    QLabel *minimumDateLabel;
    QLabel *maximumDateLabel;
    QDateEdit *currentDateEdit;
    QDateEdit *minimumDateEdit;
    QDateEdit *maximumDateEdit;
    QGroupBox *textFormatsGroupBox;
    QLabel *weekdayColorLabel;
    QLabel *weekendColorLabel;
    QLabel *headerTextFormatLabel;
    QComboBox *weekdayColorCombo;
    QComboBox *weekendColorCombo;
    QComboBox *headerTextFormatCombo;
    QCheckBox *firstFridayCheckBox;
    QCheckBox *mayFirstCheckBox;
};
#endif
#include 
#include "window.h"
Window::Window()
{
    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 Window::localeChanged(int index)
{
    calendar->setLocale(localeCombo->itemData(index).toLocale());
}
void Window::firstDayChanged(int index)
{
    calendar->setFirstDayOfWeek(Qt::DayOfWeek(
                                firstDayCombo->itemData(index).toInt()));
}
void Window::selectionModeChanged(int index)
{
    calendar->setSelectionMode(QCalendarWidget::SelectionMode(
                               selectionModeCombo->itemData(index).toInt()));
}
void Window::horizontalHeaderChanged(int index)
{
    calendar->setHorizontalHeaderFormat(QCalendarWidget::HorizontalHeaderFormat(
        horizontalHeaderCombo->itemData(index).toInt()));
}
void Window::verticalHeaderChanged(int index)
{
    calendar->setVerticalHeaderFormat(QCalendarWidget::VerticalHeaderFormat(
        verticalHeaderCombo->itemData(index).toInt()));
}
void Window::selectedDateChanged()
{
    currentDateEdit->setDate(calendar->selectedDate());
}
void Window::minimumDateChanged(const QDate &date)
{
    calendar->setMinimumDate(date);
    maximumDateEdit->setDate(calendar->maximumDate());
}
void Window::maximumDateChanged(const QDate &date)
{
    calendar->setMaximumDate(date);
    minimumDateEdit->setDate(calendar->minimumDate());
}
void Window::weekdayFormatChanged()
{
    QTextCharFormat format;
    format.setForeground(qvariant_cast(
        weekdayColorCombo->itemData(weekdayColorCombo->currentIndex())));
    calendar->setWeekdayTextFormat(Qt::Monday, format);
    calendar->setWeekdayTextFormat(Qt::Tuesday, format);
    calendar->setWeekdayTextFormat(Qt::Wednesday, format);
    calendar->setWeekdayTextFormat(Qt::Thursday, format);
    calendar->setWeekdayTextFormat(Qt::Friday, format);
}
void Window::weekendFormatChanged()
{
    QTextCharFormat format;
    format.setForeground(qvariant_cast(
        weekendColorCombo->itemData(weekendColorCombo->currentIndex())));
    calendar->setWeekdayTextFormat(Qt::Saturday, format);
    calendar->setWeekdayTextFormat(Qt::Sunday, format);
}
void Window::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 Window::reformatCalendarPage()
{
    QTextCharFormat mayFirstFormat;
    if (mayFirstCheckBox->isChecked())
        mayFirstFormat.setForeground(Qt::red);
    QTextCharFormat firstFridayFormat;
    if (firstFridayCheckBox->isChecked())
        firstFridayFormat.setForeground(Qt::blue);
    QDate date(calendar->yearShown(), calendar->monthShown(), 1); 
    calendar->setDateTextFormat(QDate(date.year(), 5, 1), mayFirstFormat);
    date.setDate(date.year(), date.month(), 1);
    while (date.dayOfWeek() != Qt::Friday)
        date = date.addDays(1);
    calendar->setDateTextFormat(date, firstFridayFormat);
}
void Window::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 Window::createGeneralOptionsGroupBox()
{
    generalOptionsGroupBox = new QGroupBox(tr("General Options"));
    localeCombo = new QComboBox;
    int curLocaleIndex = -1;
    int index = 0;
    for (int _lang = QLocale::C; _lang <= QLocale::LastLanguage; ++_lang) {
        QLocale::Language lang = static_cast(_lang);
        QList countries = QLocale::countriesForLanguage(lang);
        for (int i = 0; i < countries.count(); ++i) {
            QLocale::Country country = countries.at(i);
            QString label = QLocale::languageToString(lang);
            label += QLatin1Char('/');
            label += QLocale::countryToString(country);
            QLocale locale(lang, country);
            if (this->locale().language() == lang && this->locale().country() == country)
                curLocaleIndex = index;
            localeCombo->addItem(label, locale);
            ++index;
        }
    }
    if (curLocaleIndex != -1)
        localeCombo->setCurrentIndex(curLocaleIndex);
    localeLabel = new QLabel(tr("&Locale"));
    localeLabel->setBuddy(localeCombo);
    firstDayCombo = new QComboBox;
    firstDayCombo->addItem(tr("Sunday"), Qt::Sunday);
    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);
    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(localeCombo, SIGNAL(currentIndexChanged(int)),
            this, SLOT(localeChanged(int)));
    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(localeLabel, 0, 0);
    outerLayout->addWidget(localeCombo, 0, 1);
    outerLayout->addWidget(firstDayLabel, 1, 0);
    outerLayout->addWidget(firstDayCombo, 1, 1);
    outerLayout->addWidget(selectionModeLabel, 2, 0);
    outerLayout->addWidget(selectionModeCombo, 2, 1);
    outerLayout->addLayout(checkBoxLayout, 3, 0, 1, 2);
    outerLayout->addWidget(horizontalHeaderLabel, 4, 0);
    outerLayout->addWidget(horizontalHeaderCombo, 4, 1);
    outerLayout->addWidget(verticalHeaderLabel, 5, 0);
    outerLayout->addWidget(verticalHeaderCombo, 5, 1);
    generalOptionsGroupBox->setLayout(outerLayout);
    firstDayChanged(firstDayCombo->currentIndex());
    selectionModeChanged(selectionModeCombo->currentIndex());
    horizontalHeaderChanged(horizontalHeaderCombo->currentIndex());
    verticalHeaderChanged(verticalHeaderCombo->currentIndex());
}
void Window::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(const QDate &)),
            calendar, SLOT(setSelectedDate(const QDate &)));
    connect(calendar, SIGNAL(selectionChanged()),
            this, SLOT(selectedDateChanged()));
    connect(minimumDateEdit, SIGNAL(dateChanged(const QDate &)),
            this, SLOT(minimumDateChanged(const QDate &)));
    connect(maximumDateEdit, SIGNAL(dateChanged(const QDate &)),
            this, SLOT(maximumDateChanged(const 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 Window::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(const 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 *Window::createColorComboBox()
{
    QComboBox *comboBox = new QComboBox;
    comboBox->addItem(tr("Red"), Qt::red);
    comboBox->addItem(tr("Blue"), Qt::blue);
    comboBox->addItem(tr("Black"), Qt::black);
    comboBox->addItem(tr("Magenta"), Qt::magenta);
    return comboBox;
}
#include 
#include "window.h"
int main(int argv, char *args[])
{
    QApplication app(argv, args);
    Window window;
    window.show();
    return app.exec();
}