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592 | /* ============================================================
*
* This file is a part of digiKam project
* https://www.digikam.org
*
* Date : 1997-04-21
* Description : A date selection widget.
*
* SPDX-FileCopyrightText: 2011-2025 by Gilles Caulier <caulier dot gilles at gmail dot com>
* SPDX-FileCopyrightText: 1997 by Tim D. Gilman <tdgilman at best dot org>
* SPDX-FileCopyrightText: 1998-2001 by Mirko Boehm <mirko at kde dot org>
* SPDX-FileCopyrightText: 2007 by John Layt <john at layt dot net>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* ============================================================ */
#include "ddatepicker_p.h"
// Qt includes
#include <QApplication>
#include <QFont>
#include <QFontDatabase>
#include <QLayout>
#include <QKeyEvent>
#include <QMenu>
#include <QPainter>
#include <QStyle>
// KDE includes
#include <klocalizedstring.h>
// Local includes
#include "digikam_globals.h"
#include "ddatetable_p.h"
#include "dpopupframe.h"
namespace Digikam
{
DDatePicker::DDatePicker(QWidget* const parent)
: QFrame(parent),
d (new Private(this))
{
initWidget(QDate::currentDate());
}
DDatePicker::DDatePicker(const QDate& dt, QWidget* const parent)
: QFrame(parent),
d (new Private(this))
{
initWidget(dt);
}
void DDatePicker::initWidget(const QDate& dt)
{
const int spacingHint = layoutSpacing();
QBoxLayout* const topLayout = new QVBoxLayout(this);
topLayout->setSpacing(0);
topLayout->setContentsMargins(QMargins());
d->navigationLayout = new QHBoxLayout();
d->navigationLayout->setSpacing(0);
d->navigationLayout->setContentsMargins(QMargins());
topLayout->addLayout(d->navigationLayout);
d->navigationLayout->addStretch();
d->yearBackward = new QToolButton(this);
d->yearBackward->setAutoRaise(true);
d->navigationLayout->addWidget(d->yearBackward);
d->monthBackward = new QToolButton(this);
d->monthBackward ->setAutoRaise(true);
d->navigationLayout->addWidget(d->monthBackward);
d->navigationLayout->addSpacing(spacingHint);
d->selectMonth = new QToolButton(this);
d->selectMonth ->setAutoRaise(true);
d->navigationLayout->addWidget(d->selectMonth);
d->selectYear = new QToolButton(this);
d->selectYear->setCheckable(true);
d->selectYear->setAutoRaise(true);
d->navigationLayout->addWidget(d->selectYear);
d->navigationLayout->addSpacing(spacingHint);
d->monthForward = new QToolButton(this);
d->monthForward ->setAutoRaise(true);
d->navigationLayout->addWidget(d->monthForward);
d->yearForward = new QToolButton(this);
d->yearForward ->setAutoRaise(true);
d->navigationLayout->addWidget(d->yearForward);
d->navigationLayout->addStretch();
d->line = new QLineEdit(this);
d->val = new DatePickerValidator(this);
d->table = new DDateTable(this);
setFocusProxy(d->table);
d->fontsize = QFontDatabase::systemFont(QFontDatabase::GeneralFont).pointSize();
if (d->fontsize == -1)
{
d->fontsize = QFontInfo(QFontDatabase::systemFont(QFontDatabase::GeneralFont)).pointSize();
}
d->fontsize++; // Make a little bigger
d->selectWeek = new QComboBox(this); // read only week selection
d->selectWeek->setFocusPolicy(Qt::NoFocus);
d->todayButton = new QToolButton(this);
d->todayButton->setIcon(QIcon::fromTheme(QLatin1String("view-calendar")));
d->yearForward->setToolTip(i18n("Next year"));
d->yearBackward->setToolTip(i18n("Previous year"));
d->monthForward->setToolTip(i18n("Next month"));
d->monthBackward->setToolTip(i18n("Previous month"));
d->selectWeek->setToolTip(i18n("Select a week"));
d->selectMonth->setToolTip(i18n("Select a month"));
d->selectYear->setToolTip(i18n("Select a year"));
d->todayButton->setToolTip(i18n("Select the current day"));
// -----
setFontSize(d->fontsize);
d->line->setValidator(d->val);
d->line->installEventFilter(this);
if (QApplication::isRightToLeft())
{
d->yearForward->setIcon(QIcon::fromTheme(QLatin1String("arrow-left-double")));
d->yearBackward->setIcon(QIcon::fromTheme(QLatin1String("arrow-right-double")));
d->monthForward->setIcon(QIcon::fromTheme(QLatin1String("go-previous")));
d->monthBackward->setIcon(QIcon::fromTheme(QLatin1String("go-next")));
}
else
{
d->yearForward->setIcon(QIcon::fromTheme(QLatin1String("arrow-right-double")));
d->yearBackward->setIcon(QIcon::fromTheme(QLatin1String("arrow-left-double")));
d->monthForward->setIcon(QIcon::fromTheme(QLatin1String("go-next")));
d->monthBackward->setIcon(QIcon::fromTheme(QLatin1String("go-previous")));
}
connect(d->table, SIGNAL(dateChanged(QDate)),
this, SLOT(dateChangedSlot(QDate)));
connect(d->table, &DDateTable::tableClicked,
this, &DDatePicker::tableClickedSlot);
connect(d->monthForward, &QAbstractButton::clicked,
this, &DDatePicker::monthForwardClicked);
connect(d->monthBackward, &QAbstractButton::clicked,
this, &DDatePicker::monthBackwardClicked);
connect(d->yearForward, &QAbstractButton::clicked,
this, &DDatePicker::yearForwardClicked);
connect(d->yearBackward, &QAbstractButton::clicked,
this, &DDatePicker::yearBackwardClicked);
connect(d->selectWeek, SIGNAL(activated(int)),
this, SLOT(weekSelected(int)));
connect(d->todayButton, &QAbstractButton::clicked,
this, &DDatePicker::todayButtonClicked);
connect(d->selectMonth, &QAbstractButton::clicked,
this, &DDatePicker::selectMonthClicked);
connect(d->selectYear, &QAbstractButton::toggled,
this, &DDatePicker::selectYearClicked);
connect(d->line, &QLineEdit::returnPressed,
this, &DDatePicker::lineEnterPressed);
topLayout->addWidget(d->table);
QBoxLayout* const bottomLayout = new QHBoxLayout();
bottomLayout->setContentsMargins(QMargins());
bottomLayout->setSpacing(0);
topLayout->addLayout(bottomLayout);
bottomLayout->addWidget(d->todayButton);
bottomLayout->addWidget(d->line);
bottomLayout->addWidget(d->selectWeek);
d->table->setDate(dt);
dateChangedSlot(dt); // needed because table emits changed only when newDate != oldDate
}
DDatePicker::~DDatePicker()
{
delete d;
}
bool DDatePicker::eventFilter(QObject* o, QEvent* e)
{
if (e->type() == QEvent::KeyPress)
{
QKeyEvent* const k = (QKeyEvent*)e;<--- C-style pointer casting [+]C-style pointer casting detected. C++ offers four different kinds of casts as replacements: static_cast, const_cast, dynamic_cast and reinterpret_cast. A C-style cast could evaluate to any of those automatically, thus it is considered safer if the programmer explicitly states which kind of cast is expected.
if (
(k->key() == Qt::Key_PageUp) ||
(k->key() == Qt::Key_PageDown) ||
(k->key() == Qt::Key_Up) ||
(k->key() == Qt::Key_Down)
)
{
QApplication::sendEvent(d->table, e);
d->table->setFocus();
return true; // eat event
}
}
return QFrame::eventFilter(o, e);
}
void DDatePicker::resizeEvent(QResizeEvent* e)
{
QWidget::resizeEvent(e);
}
void DDatePicker::dateChangedSlot(const QDate& dt)
{
QString dateFormat = locale().dateFormat(QLocale::ShortFormat);
if (!dateFormat.contains(QLatin1String("yyyy")))
{
dateFormat.replace(QLatin1String("yy"),
QLatin1String("yyyy"));
}
d->line->setText(dt.toString(dateFormat));
d->selectMonth->setText(locale().standaloneMonthName(dt.month(), QLocale::LongFormat));
d->fillWeeksCombo();
// calculate the item num in the week combo box; normalize selected day so as if 1.1. is the first day of the week
QDate firstDay(dt.year(), 1, 1);
// If we cannot successfully create the 1st of the year, this can only mean that
// the 1st is before the earliest valid date in the current calendar system, so use
// the earliestValidDate as the first day.
// In particular covers the case of Gregorian where 1/1/-4713 is not a valid QDate
d->selectWeek->setCurrentIndex((dt.dayOfYear() + firstDay.dayOfWeek() - 2) / 7);
d->selectYear->setText(QString::number(dt.year()).rightJustified(4, QLatin1Char('0')));
Q_EMIT dateChanged(dt);
}
void DDatePicker::tableClickedSlot()
{
Q_EMIT dateSelected(date());
Q_EMIT tableClicked();
}
const QDate &DDatePicker::date() const
{
return d->table->date();
}
bool DDatePicker::setDate(const QDate& dt)
{
// the table setDate does validity checking for us
// this also emits dateChanged() which then calls our dateChangedSlot()
return d->table->setDate(dt);
}
void DDatePicker::monthForwardClicked()
{
if (!setDate(date().addMonths(1)))
{
QApplication::beep();
}
d->table->setFocus();
}
void DDatePicker::monthBackwardClicked()
{
if (!setDate(date().addMonths(-1)))
{
QApplication::beep();
}
d->table->setFocus();
}
void DDatePicker::yearForwardClicked()
{
if (!setDate(d->table->date().addYears(1)))
{
QApplication::beep();
}
d->table->setFocus();
}
void DDatePicker::yearBackwardClicked()
{
if (!setDate(d->table->date().addYears(-1)))
{
QApplication::beep();
}
d->table->setFocus();
}
void DDatePicker::weekSelected(int index)
{
QDate targetDay = d->selectWeek->itemData(index).toDateTime().date();
if (!setDate(targetDay))
{
QApplication::beep();
}
d->table->setFocus();
}
void DDatePicker::selectMonthClicked()
{
QDate thisDate(date());
d->table->setFocus();
QMenu popup(d->selectMonth);
// Populate the pick list with all the month names, this may change by year
// Do we need to do something here for months that fall outside valid range?
const int monthsInYear = QDate(thisDate.year() + 1, 1, 1).addDays(-1).month();
for (int m = 1 ; m <= monthsInYear ; ++m)
{
popup.addAction(locale().standaloneMonthName(m))->setData(m);
}
QAction* item = popup.actions().value(thisDate.month() - 1);
// if this happens the above should already given an assertion
if (item)
{
popup.setActiveAction(item);
}
// cancelled
if ((item = popup.exec(d->selectMonth->mapToGlobal(QPoint(0, 0)), item)) == nullptr)
{
return;
}
// We need to create a valid date in the month selected so we can find out how many days are
// in the month.
QDate newDate(thisDate.year(), item->data().toInt(), 1);
// If we have succeeded in creating a date in the new month, then try to create the new date,
// checking we don't set a day after the last day of the month
newDate.setDate(newDate.year(), newDate.month(), qMin(thisDate.day(), newDate.daysInMonth()));
// Set the date, if it's invalid in any way then alert user and don't update
if (!setDate(newDate))
{
QApplication::beep();
}
}
void DDatePicker::selectYearClicked()
{
if (!d->selectYear->isChecked())
{
return;
}
QDate thisDate(date());
DPopupFrame* const popup = new DPopupFrame(this);
DatePickerYearSelector* const picker = new DatePickerYearSelector(date(), popup);
picker->resize(picker->sizeHint());
picker->setYear(thisDate.year());
picker->selectAll();
popup->setMainWidget(picker);
connect(picker, SIGNAL(closeMe(int)),
popup, SLOT(close(int)));
picker->setFocus();
if (popup->exec(d->selectYear->mapToGlobal(QPoint(0, d->selectMonth->height()))))
{
// We need to create a valid date in the year/month selected so we can find out how many
// days are in the month.
QDate newDate(picker->year(), thisDate.month(), 1);
// If we have succeeded in creating a date in the new month, then try to create the new
// date, checking we don't set a day after the last day of the month
newDate = QDate(newDate.year(), newDate.month(), qMin(thisDate.day(), newDate.daysInMonth()));
// Set the date, if it's invalid in any way then alert user and don't update
if (!setDate(newDate))
{
QApplication::beep();
}
}
delete popup;
d->selectYear->setChecked(false);
}
void DDatePicker::uncheckYearSelector()
{
d->selectYear->setChecked(false);
d->selectYear->update();
}
void DDatePicker::changeEvent(QEvent* e)
{
if (e && (e->type() == QEvent::EnabledChange))
{
if (isEnabled())
{
d->table->setFocus();
}
}
}
DDateTable *DDatePicker::dateTable() const
{
return d->table;
}
void DDatePicker::lineEnterPressed()
{
QString dateFormat = locale().dateFormat(QLocale::ShortFormat);
if (!dateFormat.contains(QLatin1String("yyyy")))
{
dateFormat.replace(QLatin1String("yy"),
QLatin1String("yyyy"));
}
QDate newDate = QDate::fromString(d->line->text(), dateFormat);
if (newDate.isValid())
{
Q_EMIT dateEntered(newDate);
setDate(newDate);
d->table->setFocus();
}
else
{
QApplication::beep();
}
}
void DDatePicker::todayButtonClicked()
{
setDate(QDate::currentDate());
d->table->setFocus();
}
QSize DDatePicker::sizeHint() const
{
return QWidget::sizeHint();
}
void DDatePicker::setFontSize(int s)
{
QWidget* const buttons[] =
{
d->selectMonth,
d->selectYear
};
const int NoOfButtons = sizeof(buttons) / sizeof(buttons[0]);
int count;
QFont font;
QRect r;
// -----
d->fontsize = s;
for (count = 0 ; count < NoOfButtons ; ++count)
{
font = buttons[count]->font();
font.setPointSize(s);
buttons[count]->setFont(font);
}
d->table->setFontSize(s);
QFontMetrics metrics(d->selectMonth->fontMetrics());
QString longestMonth;
for (int i = 1 ; ; ++i)
{
QString str = locale().standaloneMonthName(i, QLocale::LongFormat);
if (str.isNull())
{
break;
}
r = metrics.boundingRect(str);
if (r.width() > d->maxMonthRect.width())
{
d->maxMonthRect.setWidth(r.width());
longestMonth = str;
}
if (r.height() > d->maxMonthRect.height())
{
d->maxMonthRect.setHeight(r.height());
}
}
QStyleOptionToolButton opt;
opt.initFrom(d->selectMonth);
opt.text = longestMonth;
// stolen from QToolButton
QSize textSize = metrics.size(Qt::TextShowMnemonic, longestMonth);
textSize.setWidth(textSize.width() + metrics.horizontalAdvance(QLatin1Char(' ')) * 2);
int w = textSize.width();
int h = textSize.height();
opt.rect.setHeight(h); // PM_MenuButtonIndicator depends on the height
QSize metricBound = style()->sizeFromContents(QStyle::CT_ToolButton, &opt, QSize(w, h), d->selectMonth);
d->selectMonth->setMinimumSize(metricBound);
}
int DDatePicker::fontSize() const
{
return d->fontsize;
}
void DDatePicker::setCloseButton(bool enable)
{
if (enable == (d->closeButton != nullptr))
{
return;
}
if (enable)
{
d->closeButton = new QToolButton(this);
d->closeButton->setAutoRaise(true);
const int spacingHint = layoutSpacing();
d->navigationLayout->addSpacing(spacingHint);
d->navigationLayout->addWidget(d->closeButton);
d->closeButton->setToolTip(i18nc("@action:button", "Close"));
d->closeButton->setIcon(QIcon::fromTheme(QLatin1String("window-close")));
connect(d->closeButton, &QAbstractButton::clicked,
topLevelWidget(), &QWidget::close);
}
else
{
delete d->closeButton;
d->closeButton = nullptr;
}
updateGeometry();
}
bool DDatePicker::hasCloseButton() const
{
return (d->closeButton);
}
} // namespace Digikam
#include "moc_ddatepicker.cpp"
|