C++ KDateTime类代码示例

/******************************************************************************
* If the minimum and maximum date/times fall on the same date, set the minimum
* and maximum times in the time edit box.
*/
void AlarmTimeWidget::setMaxMinTimeIf(const KDateTime& now)
{
	int   mint = 0;
	QTime maxt = time_23_59;
	mMinMaxTimeSet = false;
	if (mMaxDateTime.isValid())
	{
		bool set = true;
		KDateTime minDT;
		if (mMinDateTimeIsNow)
			minDT = now.addSecs(60);
		else if (mMinDateTime.isValid())
			minDT = mMinDateTime;
		else
			set = false;
		if (set  &&  mMaxDateTime.date() == minDT.date())
		{
			// The minimum and maximum times are on the same date, so
			// constrain the time value.
			mint = minDT.time().hour()*60 + minDT.time().minute();
			maxt = mMaxDateTime.time();
			mMinMaxTimeSet = true;
		}
	}
	mTimeEdit->setMinimum(mint);
	mTimeEdit->setMaximum(maxt);
	mTimeEdit->setWrapping(!mint  &&  maxt == time_23_59);
}

bool Recurrence::recursAt( const KDateTime &dt ) const
{
  // Convert to recurrence's time zone for date comparisons, and for more efficient time comparisons
  KDateTime dtrecur = dt.toTimeSpec( d->mStartDateTime.timeSpec() );

  // if it's excluded anyway, don't bother to check if it recurs at all.
  if ( d->mExDateTimes.containsSorted( dtrecur ) ||
       d->mExDates.containsSorted( dtrecur.date() ) ) {
    return false;
  }
  int i, end;
  for ( i = 0, end = d->mExRules.count();  i < end;  ++i ) {
    if ( d->mExRules[i]->recursAt( dtrecur ) ) {
      return false;
    }
  }

  // Check explicit recurrences, then rrules.
  if ( startDateTime() == dtrecur || d->mRDateTimes.containsSorted( dtrecur ) ) {
    return true;
  }
  for ( i = 0, end = d->mRRules.count();  i < end;  ++i ) {
    if ( d->mRRules[i]->recursAt( dtrecur ) ) {
      return true;
    }
  }

  return false;
}

//! @return "opened x minutes ago" string or similar
static QString openedString(const QDateTime& _opened)
{
    const KDateTime cur(KDateTime::currentUtcDateTime());
    const KDateTime opened = KDateTime(_opened);
    if (!opened.isValid() || opened >= cur)
        return QString();
    
    const int days = opened.daysTo(cur);
    if (days <= 1 && opened.secsTo(cur) < 24*60*60) {
        const int minutes = opened.secsTo(cur) / 60;
        const int hours = minutes / 60;
        if (hours < 1) {
            if (minutes == 0)
                return i18n("Opened less than minute ago");
            else
                return i18np("Opened 1 minute ago", "Opened %1 minutes ago", minutes);
        } else {
            return i18np("Opened 1 hour ago", "Opened %1 hours ago", hours);
        }
    } else {
        if (days < 30)
            return i18np("Opened yesterday", "Opened %1 days ago", days);
        if (days < 365)
            return i18np("Opened over a month ago", "Opened %1 months ago", days / 30);
        return i18np("Opened one year ago", "Opened %1 years ago", days / 365);
    }
    return QString();
}

//@cond PRIVATE
bool Todo::Private::recurTodo( Todo *todo )
{
  if ( todo->recurs() ) {
    Recurrence *r = todo->recurrence();
    KDateTime endDateTime = r->endDateTime();
    KDateTime nextDate = r->getNextDateTime( todo->dtDue() );

    if ( ( r->duration() == -1 ||
           ( nextDate.isValid() && endDateTime.isValid() &&
             nextDate <= endDateTime ) ) ) {

      while ( !todo->recursAt( nextDate ) ||
              nextDate <= KDateTime::currentUtcDateTime() ) {

        if ( !nextDate.isValid() ||
             ( nextDate > endDateTime && r->duration() != -1 ) ) {

          return false;
        }

        nextDate = r->getNextDateTime( nextDate );
      }

      todo->setDtDue( nextDate );
      todo->setCompleted( false );
      todo->setRevision( todo->revision() + 1 );

      return true;
    }
  }

  return false;
}

void ComparisonVisitorTest::testEventComparison()
{
  const QString summary = QLatin1String( "Testing comparison" );
  const QString desc    = QLatin1String( "Testing ComparisonVisitor" );
  const KDateTime now   = KDateTime::currentUtcDateTime();
  const KDateTime later = now.addSecs( 3600 );

  Event reference;
  reference.setSummary( summary );
  reference.setDescription( desc );
  reference.setDtStart( now );
  reference.setDtEnd( later );

  // create a copy of the reference incidence
  Event event( reference );
  
  IncidenceBase *baseReference = &reference;
  IncidenceBase *baseIncidence = &event;

  QVERIFY( mComparator.compare( baseIncidence, baseReference ) );

  // change a property of Event (but not of IncidenceBase)
  event.setHasEndDate( !event.hasEndDate() );
  QVERIFY( !mComparator.compare( baseIncidence, baseReference ) );
}

QString DateStringBuilder::getDateString(const KDateTime &dateTime, bool grouped)
{
    if (!dateTime.isValid() || dateTime.isNull()) {
        return QString();
    }
    QString day;
    if (QDateTime().currentDateTime().date() == dateTime.date()) {
        day = i18nc( "today", "Today" );
    }
    if (QDateTime().currentDateTime().date().addDays(1) == dateTime.date()) {
        day = i18nc( "tomorrow", "Tomorrow" );
    }
    if (QDateTime().currentDateTime().date() == dateTime.date().addDays(1)) {
        day = i18nc( "yesterday", "Yesterday" );
    }
    if (!grouped && !day.isEmpty()) {
        return day.append("/t").append(dateTime.toString("%d.%m.%Y"));
    }

    if (!grouped && day.isEmpty()) {
        return dateTime.toString("%:a %d.%m.%Y");
    }

    if (QDateTime().currentDateTime().date().weekNumber() == dateTime.date().weekNumber()) {
        return dateTime.toString("%A");
    }

    //TODO last week

    return dateTime.toString("%B");
    //KGlobal::locale()->formatDate(pimitem->getPrimaryDate().dateTime());
    //return pimitem->getPrimaryDate().dateTime().toString("ddd dd.MM hh:mm");
    //return dateTime.toString("%:a %d.%m.%Y");
}

void DateRangeFilterProxyModel::setEndDate( const KDateTime &date )
{
  if ( date.isValid() ) {
    d->mEnd = date.toUtc();
    invalidateFilter();
  }
}

void TodoTest::testSetCompleted()
{

    Todo todo1, todo2, todo3;
    todo1.setSummary(QStringLiteral("Todo Summary"));
    todo2.setSummary(QStringLiteral("Todo Summary"));
    todo3.setSummary(QStringLiteral("Todo Summary"));
    KDateTime today = KDateTime::currentUtcDateTime();

    // due yesterday
    KDateTime originalDueDate = today.addDays(-1);

    todo1.setDtStart(originalDueDate);
    todo1.setDtDue(originalDueDate);
    todo1.recurrence()->setDaily(1);
    todo1.setCompleted(today);

    todo2.setCompleted(true);

    todo3.setStatus(Incidence::StatusCompleted);

    QVERIFY(originalDueDate != todo1.dtDue());
    QVERIFY(!todo1.isCompleted());
    QVERIFY(todo2.isCompleted());
    QCOMPARE(todo2.status(), Incidence::StatusCompleted);
    QVERIFY(todo3.isCompleted());
    todo2.setCompleted(false);
    QVERIFY(!todo2.isCompleted());
}

void KdeObservatory::engineError(const QString &source, const QString &error)
{
    kDebug() << "Source:" << source << "Error:" << error;
    if (source == "fatal" && m_sourceCounter > 0)
    {
        m_viewTransitionTimer->stop();

        foreach(QGraphicsWidget *widget, m_views)
            widget->hide();

        m_views.clear();

        graphicsWidget();
        m_updateLabel->setStyleSheet(QString("QLabel{color:rgb(255, 0, 0);}"));
        m_updateLabel->setText(error);
        setBusy(false);
        
        return;
    }

    --m_sourceCounter;

    if (m_sourceCounter == 0)
    {
        KDateTime currentTime = KDateTime::currentLocalDateTime();
        KLocale *locale = KGlobal::locale();
        m_updateLabel->setStyleSheet(QString("QLabel{color:rgb(0, 0, 0);}"));
        m_updateLabel->setText(i18n("Last update: %1 %2", currentTime.toString(locale->dateFormatShort()), currentTime.toString(locale->timeFormat())));
        setBusy(false);
        updateViews();
    }
}

void KdeObservatory::dataUpdated(const QString &sourceName, const Plasma::DataEngine::Data &data)
{
    // Prevent for being updated from another instance update request
    if (data["appletId"].toUInt() != id())
        return;

    QString project = data["project"].toString();

    if (sourceName != "topActiveProjects" && !data.contains(project) && !data.contains("error"))
        return;

    if (sourceName == "topActiveProjects")
        m_viewProviders[i18n("Top Active Projects")]->updateViews(data);
    else if (sourceName == "topProjectDevelopers" && !project.isEmpty())
        m_viewProviders[i18n("Top Developers")]->updateViews(data);
    else if (sourceName == "commitHistory" && !project.isEmpty())
        m_viewProviders[i18n("Commit History")]->updateViews(data);
    else if (sourceName == "krazyReport" && !project.isEmpty())
        m_viewProviders[i18n("Krazy Report")]->updateViews(data);

    --m_sourceCounter;
    m_collectorProgress->setValue(m_collectorProgress->maximum() -  m_sourceCounter);

    if (m_sourceCounter == 0)
    {
        KDateTime currentTime = KDateTime::currentLocalDateTime();
        KLocale *locale = KGlobal::locale();
        m_updateLabel->setStyleSheet(QString("QLabel{color:rgb(0, 0, 0);}"));
        m_updateLabel->setText(i18n("Last update: %1 %2", currentTime.toString(locale->dateFormatShort()), currentTime.toString(locale->timeFormat())));
        setBusy(false);
        updateViews();
    }
}

void KCalResourceSlox::parseEventAttribute( const QDomElement &e,
                                            Event *event )
{
  QString tag = e.tagName();
  QString text = decodeText( e.text() );
  if ( text.isEmpty() ) return;

  if ( tag == fieldName( EventBegin ) ) {
    KDateTime dt;
    if ( event->allDay() ) {
      if ( type() == "ox" )
        dt = WebdavHandler::sloxToKDateTime( text, timeSpec() );
      else
        dt = WebdavHandler::sloxToKDateTime( text ); // ### is this really correct for SLOX?
      dt.setDateOnly( true );
    } else
      dt = WebdavHandler::sloxToKDateTime( text );
    event->setDtStart( dt );
  } else if ( tag == fieldName( EventEnd ) ) {
    KDateTime dt;
    if ( event->allDay() ) {
      dt = WebdavHandler::sloxToKDateTime( text );
      dt = dt.addSecs( -1 );
    }
    else dt = WebdavHandler::sloxToKDateTime( text );
    event->setDtEnd( dt );
  } else if ( tag == fieldName( Location ) ) {
    event->setLocation( text );
  }
}

/** static */
KDateTime AlarmDialog::triggerDateForIncidence( const Incidence::Ptr &incidence,
                                                const QDateTime &reminderAt,
                                                QString &displayStr )
{
  KDateTime result;

  if ( incidence->alarms().isEmpty() ) {
    return result;
  }

  Alarm::Ptr alarm = incidence->alarms().first();

  if ( incidence->recurs() ) {
    result = incidence->recurrence()->getNextDateTime(
      KDateTime( reminderAt, KDateTime::Spec::LocalZone( ) ) );

      displayStr = KGlobal::locale()->formatDateTime( result.toLocalZone() );
  }

  if ( !result.isValid() ) {
    result = incidence->dateTime( Incidence::RoleAlarm );
    displayStr = IncidenceFormatter::dateTimeToString( result, false,
                                                       true,
                                                       KDateTime::Spec::LocalZone() );
  }

  return result;
}

void CalSettings::loadSpecial(const QUrl& url, const QColor& color)
{
    if (url.isEmpty())
    {
        qCDebug(DIGIKAM_GENERAL_LOG) << "Loading calendar from file failed: No valid url provided!";
        return;
    }

    KCalCore::MemoryCalendar::Ptr memCal(new KCalCore::MemoryCalendar(QString::fromLatin1("UTC")));
    KCalCore::FileStorage::Ptr fileStorage(new KCalCore::FileStorage(memCal, url.toLocalFile(), new KCalCore::ICalFormat));

    qCDebug(DIGIKAM_GENERAL_LOG) << "Loading calendar from file " << url.toLocalFile();

    if (!fileStorage->load())
    {
        qCDebug(DIGIKAM_GENERAL_LOG) << "Failed!";
    }
    else
    {
        CalSystem calSys;
        QDate     qFirst, qLast;

        qFirst = calSys.date(params.year, 1, 1);
        qLast  = calSys.date(params.year + 1, 1, 1);
        qLast  = qLast.addDays(-1);

        KDateTime dtFirst(qFirst);
        KDateTime dtLast(qLast);
        KDateTime dtCurrent;

        int counter                = 0;
        KCalCore::Event::List list = memCal->rawEvents(qFirst, qLast);

        foreach(const KCalCore::Event::Ptr event, list)
        {
            qCDebug(DIGIKAM_GENERAL_LOG) << event->summary() << endl << "--------";
            counter++;

            if (event->recurs())
            {
                KCalCore::Recurrence* const recur = event->recurrence();

                for (dtCurrent = recur->getNextDateTime(dtFirst.addDays(-1));
                     (dtCurrent <= dtLast) && dtCurrent.isValid();
                     dtCurrent = recur->getNextDateTime(dtCurrent))
                {
                    addSpecial(dtCurrent.date(), Day(color, event->summary()));
                }
            }
            else
            {
                addSpecial(event->dtStart().date(), Day(color, event->summary()));
            }
        }

        qCDebug(DIGIKAM_GENERAL_LOG) << "Loaded " << counter << " events";
        memCal->close();
        fileStorage->close();
    }

/******************************************************************************
* Set the minimum date/time to track the current time.
*/
void AlarmTimeWidget::setMinDateTimeIsCurrent()
{
	mMinDateTimeIsNow = true;
	mMinDateTime = KDateTime();
	KDateTime now = KDateTime::currentDateTime(mTimeSpec);
	mDateEdit->setMinDate(now.date());
	setMaxMinTimeIf(now);
}

FreeBusyManagerPrivate::FreeBusyProvidersRequestsQueue::FreeBusyProvidersRequestsQueue(
  const KDateTime &start, const KDateTime &end )
  : mHandlersCount( 0 ), mResultingFreeBusy( 0 )
 {
   mStartTime = start.toString();
   mEndTime = end.toString();
   mResultingFreeBusy = KCalCore::FreeBusy::Ptr( new KCalCore::FreeBusy( start, end ) );
 }