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Fix Qt date interfaces for times before 1970

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This seems to work around the crazy QDateTime::fromTime_t() problem in Qt.

It is *very* lightly tested. In fact, the only test is that "test0.xml"
change that is part of this patch.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Linus Torvalds 2016-04-28 16:31:37 -07:00 • committed by Dirk Hohndel
parent 84166a4ee7
commit 56ed3f1c61
4 changed files with 13 additions and 14 deletions
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17
core/subsurface-qt/DiveObjectHelper.cpp
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@ -73,7 +73,7 @@ int DiveObjectHelper::id() const
QString DiveObjectHelper::date() const
{
QDateTime localTime = QDateTime::fromTime_t(m_dive->when - gettimezoneoffset(m_dive->when));
QDateTime localTime = QDateTime::fromMSecsSinceEpoch(1000*m_dive->when, Qt::UTC);
localTime.setTimeSpec(Qt::UTC);
return localTime.date().toString(prefs.date_format);
}
@ -85,7 +85,7 @@ timestamp_t DiveObjectHelper::timestamp() const
QString DiveObjectHelper::time() const
{
QDateTime localTime = QDateTime::fromTime_t(m_dive->when - gettimezoneoffset(m_dive->when));
QDateTime localTime = QDateTime::fromMSecsSinceEpoch(1000*m_dive->when, Qt::UTC);
localTime.setTimeSpec(Qt::UTC);
return localTime.time().toString(prefs.time_format);
}
@ -288,13 +288,12 @@ QString DiveObjectHelper::tripMeta() const
QString title(dt->location);
if (title.isEmpty()) {
// so use the date range
timestamp_t firstTime = dt->when - gettimezoneoffset(dt->when);
QString firstMonth = QDateTime::fromTime_t(firstTime).toString("MMM");
QString firstYear = QDateTime::fromTime_t(firstTime).toString("yyyy");
struct dive *lastDive = dt->dives;
timestamp_t lastTime = lastDive->when - gettimezoneoffset(lastDive->when);
QString lastMonth = QDateTime::fromTime_t(lastTime).toString("MMM");
QString lastYear = QDateTime::fromTime_t(lastTime).toString("yyyy");
QDateTime firstTime = QDateTime::fromMSecsSinceEpoch(1000*dt->when, Qt::UTC);
QString firstMonth = firstTime.toString("MMM");
QString firstYear = firstTime.toString("yyyy");
QDateTime lastTime = QDateTime::fromMSecsSinceEpoch(1000*dt->dives->when, Qt::UTC);
QString lastMonth = lastTime.toString("MMM");
QString lastYear = lastTime.toString("yyyy");
if (lastMonth == firstMonth && lastYear == firstYear)
title = firstMonth + " " + firstYear;
else if (lastMonth != firstMonth && lastYear == firstYear)