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John Layt 18322bfabc QDateTime - Change date/time storage to msecs
Change from storing the date and time as QDate and QTime to a serialised
msecs format.  This format is a direct translation of the QDate and
QTime values, it is not the actual msecs since the Unix epoch.  This
msecs format ensures we are always able to recreate the original QDate
and QTime values, but should still simplify the code and improve
performance.

Because we no longer store the explicit date and time we need to store
their isNull()/isValid() status separately.

The changes in storage results in the same memory footprint as before.

Note that this change does not optimize the code nor set out to fix the
known bugs, it only seeks to maintain the current behavior, although
some bugs are fixed implicitly.  More bug fixes and optimizations will
follow.

[ChangeLog][Important Behavior Changes] The supported date range in
QDateTime has been reduced to about +/- 292 million years, the range
supported by the number of msecs since the Unix epoch of 1 Jan 1970
as stored in a qint64, and as able to be used in the
setMSecsSinceEpoch() and toMSecsSinceEpoch() methods.

Change-Id: I98804d8781909555d3313a3a7080eb8e70cb46ad
Reviewed-by: Sérgio Martins <sergio.martins@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2013-09-20 23:45:06 +02:00
bin Merge "Merge remote-tracking branch 'origin/release' into stable" into refs/staging/stable 2013-06-15 22:39:25 +02:00
config.tests Allow Clang to compile without libc++ 2013-09-09 23:04:48 +02:00
dist Merge remote-tracking branch 'origin/stable' into dev 2013-09-07 16:18:32 +02:00
doc Merge branch 'stable' into dev 2013-09-13 18:04:17 +02:00
examples Remove qSort usages from qtbase examples 2013-09-14 13:12:40 +02:00
lib
mkspecs WinRT: Basic global support 2013-09-20 13:53:59 +02:00
qmake qmake: added WMAppManifest generation for winphone target 2013-09-17 23:09:24 +02:00
src QDateTime - Change date/time storage to msecs 2013-09-20 23:45:06 +02:00
tests QDateTime - Change date/time storage to msecs 2013-09-20 23:45:06 +02:00
tools Disable sqlite for Windows Phone 8 builds 2013-09-15 18:18:46 +02:00
util Doc: Link to external docs in QOpenGLFunctions_* classes 2013-09-09 10:40:37 +02:00
.gitattributes Update the git-archive export options 2012-09-07 15:39:31 +02:00
.gitignore Long live QCommandLineParser! 2013-08-24 21:33:39 +02:00
.qmake.conf Enable -Werror for all of qtbase 2013-09-04 01:50:10 +02:00
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configure Bring back Qt4 X11 session management functionality. 2013-09-13 11:47:06 +02:00
configure.bat get rid of syncqt wrapper scripts 2013-05-13 21:54:48 +02:00
header.BSD Update copyright year in Digia's license headers 2013-01-18 09:07:35 +01:00
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INSTALL INSTALL: Fix URL of Installing Qt documentation 2013-04-11 16:09:07 +02:00
LGPL_EXCEPTION.txt Change copyrights from Nokia to Digia 2012-09-22 19:20:11 +02:00
LICENSE.FDL
LICENSE.GPL
LICENSE.LGPL Update copyright year in Digia's license headers 2013-01-18 09:07:35 +01:00
LICENSE.PREVIEW.COMMERCIAL Update LICENSE.PREVIEW.COMMERCIAL license 2013-06-03 20:04:26 +02:00
qtbase.pro Merge remote-tracking branch 'origin/stable' into dev 2013-06-27 13:06:38 +02:00
sync.profile put ANGLE includes in a QtANGLE subdir 2013-06-10 21:12:13 +02:00