Subsurface uses "local time" which in particular means we never
display time zone information to the user. The user (and our file
format) only sees times like 5pm or 17:00. A better name than
local time (which could mean "local at the dive spot) would
be "watch time", the time displayed by the diver's watch when
she entered the water.
Internally, we store times as time_t, seconds since Jan 1 1970 0:00
UTC. Our convention for conversion between 5pm and time_t as always
been to treat 5pm as if it were UTC.
Then confusion arose since Qt's QDateTime (which is tied to UI elements
like QTimeEdit and similar) is time zone aware and by default assumes
the system time zone. So when we set a QDateTime to 5pm and then later
convert it to time_t we have to take care about the difference between
UTC and the system time zone.
This patch unifies our solution to this problem: With it, we set all
QDateTime's time zone to UTC. This means we don't have to correct for
a time zone anymore when converting to time_t (note, however, the
signedness issue: Qt's idea of time_t is broken since it assumes it
to be unsigned thus not allowing for dates before 1970. Better use the
millisecont variants).
We only need to be careful about time zones when using the current time.
With this convention, when assigning the current time to a QDateTime, we
need to shift for the time zone since its value in UTC should actually be
the watch time of the user who is most likely used to the system time zone.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Commit b1ed04a means that DivePlannerPointsModel::rememberTanks() and related
functions and variables are no longer required
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Commit aa1446bed2 ("Make filters work again in master") makes filters
work again for the desktop app, but breaks building Subsurface-mobile.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Since 6cd711a1 filters don't work. This went unnoticed because the
commit wasn't applied on v4.5-branch.
Partially reverting it makes filters work again.
Signed-off-by: Salvador Cuñat <salvador.cunat@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Add option to calculate the best mix portion of O2 and He for the dive's max
depth if the user enters * in the MOD and MND cylinder fields. Gas portions
are automatically recalculated if the max depth of the dive changes.
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
The switch depth of a decompression gas is its MOD. By renaming the heading to
"Deco MOD", it is more clearly distinguished from the bottom MOD, and it is
more obvious how they relate to the Bottom pO2 and Deco pO2 preferences.
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Adds fields to the planner cylinder model for maximum operating depth (MOD)
for a bottom mix gas, and maximum narcotic depth (MND). Fields are read/write,
so changing MOD changes %O2 and vice-versa. Changing MND changes %He and
vice-versa.
When setting MOD directly, the %O2 is truncated (rounded down) to an integer,
which re-calculates the MOD, which is sometimes a few metres greater than the
input depth. This is desireable behaviour, as the rounding is conservative.
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This fix is reasonably straightforward when the divedatapoint structure stores
the cylinder rather than gasmix.
Fixes#970
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Determining the correct cylinder index from a known gas mix can be
complicated, but it is trivial to look up the gasmix from the cylinder_t
structure.
It makes sense to remember which cylinder is being used. This simplifies
handling changing a cylinder's gas mix, either directly by the user, or
indirectly in the planner. It also permits tracking of multiple cylinders of
the same mix, e.g. independent twins / sidemount.
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
A few basic rules for gas validation:
We can't have <0%, or >100% of either O2 or He
O2 + He must not be >100%
Switch depth can't be <0%
This places limits on user-input values
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This allows calculation and selection of best mix in the planner cylinder
entry, by entering the gas depth, followed by "b" for best (trimix) mix, or
"bn" for best nitrox mix.
The UI is not intuitive, but it is quick and easy. At the very least, it
should be documented.
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
If the value for "use" is negative or larger than the number of
elements in "enum cylinderuse", later CylindersModel::data() can
request a string in the lines of cylinderuse_text[cyl->cylinder_use],
which can SIGSEGV.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Most of the time we are adding all the dives, so do this in a single model
operation. This makes the case when adding a single dive (in the undo delete
function) slightly more complicated, but that seems totally worth it for the
speedup in the common case.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Having subsurface-core as a directory name really messes with
autocomplete and is obviously redundant. Simmilarly, qt-mobile caused an
autocomplete conflict and also was inconsistent with the desktop-widget
name for the directory containing the "other" UI.
And while cleaning up the resulting change in the path name for include
files, I decided to clean up those even more to make them consistent
overall.
This could have been handled in more commits, but since this requires a
make clean before the build, it seemed more sensible to do it all in one.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
In the planner, for recreational mode, there is a setting indicating
the pressure at which the diver should be back at the surface. This
pressure was hardcoded to bar.
Fixes#1027
[Dirk Hohndel: small modifications, more reasonable step for psi,
more reasonable maxima]
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This is in the context of the iOS port and shouldn't impact any of the
other builds.
[Dirk Hohndel: refactored the iOS patches]
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Oops, I forgot to take the sort model on top of the model into account.
Now everything should stay consistent - ListView order when accessed from
QML, but internal order when accessing the underlying array.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
The dive list might contain dives in the future, don't add the new dive to
then end but instead add it at the correct spot in the list
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This is questionable, but perhaps useful.
When showing imperial cylinder sizes, show both the nominal value (with
no compensation for compressibility of the gas) and the "actual" amount
of gas the cylinder contains.
So an AL80 will show as a size of "80 (77)cuft", because while 80 is the
nominal size, the actual amount of gas that will fit is just 77 cuft.
[Dirk Hohndel: adjusted to take translation of the unit into account]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
We had two totally different usage cases for "get_volume_string()": one
that did the obvious "show this volume as a string", and one that tried
to show a cylinder size.
The function used a magic third argument (the working pressure of the
cylinder) to distinguish between the two cases, but it still got it
wrong.
A metric cylinder doesn't necessarily have a working pressure at all,
and the size is a wet size in liters. We'd pass in zero as the working
pressure, and if the volume units were set to cubic feet, the logic in
"get_volume_string()" would happily convert the metric wet size into the
wet size in cubic feet.
But that's completely wrong. An imperial cylinder size simply isn't a
wet size. If you don't have a working pressure, you cannot convert the
cylinder size to cubic feet. End of story.
So instead of having "get_volume_string()" have magical behavior
depending on working pressure, and getting it wrong anyway, just make
get_volume_string do a pure volume conversion, and create a whole new
function for showing the size of a cylinder.
Now, if the cylinder doesn't have a working pressure, we just show the
metric size, even if the user had asked for cubic feet.
[Dirk Hohndel: added call to translation functions for the units]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
It's possible that this will create an out of order dive list, but it
seems the most consistent way to do things and to avoid more than one dive
with the same dive number (which could have happened if you add several
dives manually that are not the newest dives in the dive list).
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
I tried various things to do this from QML but it just doesn't seem to
work at all. So I gave up and instead added a trivial helper function.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
These can then be used from QML to map the index into the model (the sort
model corresponds directly to the indices in QML) to the dive id and back.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
