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#include <QtGui>

#include "window.h"

//! [0]

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"));

}

//! [0]

void Window::localeChanged(int index)

{

    calendar->setLocale(localeCombo->itemData(index).toLocale());

}

//! [1]

void Window::firstDayChanged(int index)

{

    calendar->setFirstDayOfWeek(Qt::DayOfWeek(

                                firstDayCombo->itemData(index).toInt()));

}

//! [1]

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()));

}

//! [2]

void Window::selectedDateChanged()

{

    currentDateEdit->setDate(calendar->selectedDate());

}

//! [2]

//! [3]

void Window::minimumDateChanged(const QDate &date)

{

    calendar->setMinimumDate(date);

    maximumDateEdit->setDate(calendar->maximumDate());

}

//! [3]

//! [4]

void Window::maximumDateChanged(const QDate &date)

{

    calendar->setMaximumDate(date);

    minimumDateEdit->setDate(calendar->minimumDate());

}

//! [4]

//! [5]

void Window::weekdayFormatChanged()

{

    QTextCharFormat format;

    format.setForeground(qvariant_cast<QColor>(

        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);

}

//! [5]

//! [6]

void Window::weekendFormatChanged()

{

    QTextCharFormat format;

    format.setForeground(qvariant_cast<QColor>(

        weekendColorCombo->itemData(weekendColorCombo->currentIndex())));

    calendar->setWeekdayTextFormat(Qt::Saturday, format);

    calendar->setWeekdayTextFormat(Qt::Sunday, format);

}

//! [6]

//! [7]

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);

}

//! [7]

//! [8]

void Window::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);

    }

}

//! [8]

//! [9]

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);

}

//! [9]

//! [10]

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<QLocale::Language>(_lang);

        QList<QLocale::Country> 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);

//! [10]

    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);

//! [11]

    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)));

//! [11]

    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);

//! [12]

    firstDayChanged(firstDayCombo->currentIndex());

    selectionModeChanged(selectionModeCombo->currentIndex());

    horizontalHeaderChanged(horizontalHeaderCombo->currentIndex());

    verticalHeaderChanged(verticalHeaderCombo->currentIndex());

}

//! [12]

//! [13]

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);

//! [13] //! [14]

    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)));

//! [14]

    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);

//! [15]

}

//! [15]

//! [16]

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);

//! [16] //! [17]

    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"));

//! [17] //! [18]

    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()));

//! [18]

    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();

//! [19]

    reformatHeaders();

    reformatCalendarPage();

}

//! [19]

//! [20]

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;

}

//! [20]