Commit graph

15414 commits

Author SHA1 Message Date
Dirk Hohndel
97ce7a3763 Fix map scrolling
The osm-gps-map default is to scroll-and-recenter around the mouse position.
That is BAT SHIT CRAZY. So this implements our own scroll handling instead.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-20 20:26:15 -08:00
Dirk Hohndel
3d248682ee Mark locations that have GPS location data attached
This is rather lame - we simply turn the location text into italics for those
dives where we have GPS location data. Underlining might be more natural, but
Gtk plays games with the underline attribute if the mouse hovers over text.

Ideally I would have prefered a little GPS logo next to the location text - but
I couldn't figure out how to do that without writing my own cell renderer which
seemed total overkill.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-20 17:32:55 -08:00
Dirk Hohndel
980ba9cb50 Reuse map windows
Instead of opening a new window / new map for every dive site we now have only
two windows / maps. One for the overview of all the dive sites, the other one
that is used to show the map for a specific dive site.

This also switches the position preference from CENTER to MOUSE - this way it's
less likely that the two map windows will be drawn exactly on top of each
other.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-20 17:07:07 -08:00
Dirk Hohndel
4ea90fcb0b Add modules file for building prerequisites on MacOS X
This should allow the user to build osm-gps-map with jhbuild (all other
required components are already build by the jhbuild default modules).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-19 16:19:11 -08:00
Dirk Hohndel
5c2d1af5ec Add CFLAGS to build rule for webservice.o
Otherwise it won't compile on MacOS X

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-19 16:06:24 -08:00
Dirk Hohndel
ed11851ae3 Improve handling for old XML files in Uemis downloader
In order to work in the most expected ways for people who have used
a version of Subsurface that didn't store the deviceid in the divecomputer
we relax the testing for when a divecomputer entry is assumed to match the
current divecomputer.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-18 13:01:08 -08:00
Dirk Hohndel
0a8038dba4 Consistently use uint32_t for deviceid
There were a handful of places that incorrectly used signed values for the
deviceid.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-18 12:58:45 -08:00
Dirk Hohndel
62c4ec20c7 Fix potential crash with old XML files
A file with no divecomputer section in a dive can trigger a SEGV as cur_dc
could be NULL.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-18 10:39:25 -08:00
Dirk Hohndel
edfdef1bbc Add libsoup to Windows installer
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-18 10:39:05 -08:00
Lubomir I. Ivanov
9fa6b224f7 Fixed some small issues in webservice.c
1) download_dialog_status_text() had some statements with no effect
due to missing return keywords. This fixes incorrect error reporting.

2) Optimize the traversion of the response XML. Assuming that the
status tag should be always under the root tag. We check if the
root tag has children and enter a loop until we find a the
"download" or "error" node names. If there are no children
we return a parser error.

3) Clamp the number of input characters to 30 in the user id
GtkEntry field.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-18 10:07:17 -08:00
Amit Chaudhuri
334e51988d Add facility to edit nicknames / remove nickname entry
This allows users to edit one or more nick name entries in a single
session. Entries can also be removed individually.

Based on mock up by Lubomir Ivanov and various conversations from Dirk.
Thanks to both.

[Dirk Hohndel: quite a bit of editing for coding style and whitespace]

Signed-off-by: Amit Chaudhuri <amit.k.chaudhuri@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-18 07:32:39 -08:00
Lubomir I. Ivanov
592c23cd9c Updated the Makefile to support libsoup and include webservice.[c|h]
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-17 22:29:41 -08:00
Lubomir I. Ivanov
a5ee2b66e1 Added client side communication to the Subsurface Web Service
A couple of new files webservice.c and webservice.h are added.

webservice.h exposes two methods at the moment:
- webservice_download_dialog():
this function creates the user interface for the download dialog
from the web service.
- webservice_request_user_xml()
this function is a direct call to retrieve XML for a specific
user identifier. the actual data, data length and error codes
are stored in passed pointers.

A menu entry is added in the Log menu:
"Download From Web Service"

The used backend for communication at the moment is provided
by libsoup.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-17 22:29:24 -08:00
Dirk Hohndel
d0d4bbece7 Hack Makefile, gtk-gui.c and divelist.c to allow building w/o osm-gps-map
While we are waiting for an autotools generated Makefile, this should allow
people to build that don't have osm-gps-map.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-17 11:17:48 -08:00
Dirk Hohndel
91d6d12416 Update gtk-osx-integration to version 2 of the API
In order to be able to work with Gtk3 introspection all the APIs had to be
renamed. Instead of quartz_application... and gtk_osxapplication... all the API
functions are now name gtkosx_application...

This will break the build for people who haven't upgraded to the latest - but
supporting both would be unspeakably ugly.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-17 11:14:47 -08:00
Dirk Hohndel
aa3eb364bc Add GFlow/GFhigh settings in dive planner
The planner interactively responds to changes to the GFlow and GFhigh in
the dialog and calculates an appropriate profile. If there is a previous
dive within the 48 hours prior to this dive then its saturation is
correctly taken into account if the gradient factors are changed - so if
they are aggressively lowered it is possible to start the dive with
already an existing ceiling (simply increase the surface interval to 'fix'
that).

Once the plan is accepted the GF values are reset to the current
preferences. This can cause the ceiling in the plot to change and the deco
stops to no longer match the ceiling - but that's a logical consequence of
the ability to change a temporary copy of GFlow/GFhigh during the planning
process and not the actual preferences (which would be counter intuitive,
I think).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-16 15:40:38 -08:00
Dirk Hohndel
2cee400ad1 Correctly mark divelist changed after accepting dive plan
Commit 293126257b20 ("Mark divelist as changed if user accepts planned
dive") had the correct commit message but an incorrect implementation.

This moves the mark_divelist_changed() call into the GTK_RESPONSE_ACCEPT
clause where it belongs.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-16 14:44:11 -08:00
Henrik Brautaset Aronsen
71c8234413 Update dive flag image.
The previous flag didn't work on Windows somehow.  I guess Photoshop
added some headers that GdkPixbuf didn't like.  I've reconverted it
with ImageMagick, which made the file less than half the size. Bonus!

Signed-off-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-16 14:09:57 -08:00
Linus Torvalds
30d090cee2 Only offer to show dive on map if we have location information
This adds the "Show in map" menu entry to the divelist only if we
actually have a location to show.

Of course, having some way to visually see whether we have a GPS
location even before we show the menu would probably be good. Maybe a
marker in the "location" string or something. But in the meanwhile, at
least we don't have that menu entry if we have nothing to show.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-16 13:04:31 -08:00
Henrik Brautaset Aronsen
e9953fa5e6 Show single dives in map.
This adds a "Show in map" entry in the dive list context menu.  It will
zoom to the dive location if it exists, otherwise the full map will be
displayed.

I've also switched map tiles from OpenStreetMap to Google Maps just to
show off that we can.

Signed-off-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:41:57 -08:00
Salvador Cuñat
3fb80bcaeb Clean up null pointer printout in weightsystem description
If there's no weightsystem description, as in most imported
dives, print a literal "unknown" instead of null pointer
or blank.

Signed-off-by: Salvador Cuñat <salvador.cunat@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:37:42 -08:00
Dirk Hohndel
348c590ac6 Mark divelist as changed if user accepts planned dive
When the user clicks OK in the dive planner and the dive is added to the
divelist the divelist needs to be marked as changed so Subsurface prompts
the user to save the file before quitting.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:35:29 -08:00
Dirk Hohndel
db8de4233d Calculate the gas used during the planned dive
This works on the assumption that the diver uses the deco SAC rate while
on a calculated deco stop and the bottom SAC rate during the rest of the
dive (including the time they move from deco stop to deco stop).

This is making the planning function mostly useful for open circuit
diving.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:35:14 -08:00
Dirk Hohndel
c3a08ff056 Add diveplan to the dive notes
This makes it easy to print out a dive plan - it's simply stored in the
notes of the simulated dive we create.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:34:51 -08:00
Dirk Hohndel
189cba7fd2 Add code to enter SAC rates for dive planning
This just provides the infrastructure to enter the data, nothing is
calculated, yet.

This adds a new get_thousandths() helper function so we can enter
information of the 'mili-' type as decimal values. So things like
"14.5 l/min" or "0.75 cuft/min" are parsed correctly and converted
into a ml value.

In the process of implementing that I also fixed a bug introduced in
commit ab7aecf16e ("Simplify dive planning code") which broke the
get_tenth() function.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:31:27 -08:00
Dirk Hohndel
417391a801 Add small helper function to make planner gui function easier to read
This is just preparation for the next set of changes.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:31:03 -08:00
Jan Schubert
322410a845 Trivial pressure related fixes
This patch removes the need for the "string" pressurebuf in planner.c.

It also adds a unit to the partial pressures displayed in the mouse
overlay which are always displayed in bar.

BTW: Has anyone seen a pO2 shown in PSI?

Signed-off-by: Jan Schubert <Jan.Schubert@GMX.li>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 10:13:33 -08:00
Dirk Hohndel
3b7d68c091 Correct the start time of planned dives
Subsurface follows the lead of most divecomputers to use times without
timezone - so all times are implicitly assumed to be local time of the
dive location; so in order to give the current time in that way we
actually need to add the timezone offset.

Instead of relying on OS specific members of struct tm we use the glib
timezone functions to get the timezone offset for us. Of course, the
function used to do this is only in glib 2.26 or newer, which once again
means that Debian stable won't be supported. But since that doesn't build
other parts of Subsurface, either, I think I'll live with that.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 10:09:42 -08:00
Lubomir I. Ivanov
2fb7aa1172 Attempt to override the URI handler in the about dialog
The previous patch in this series adds the function
subsurface_launch_for_uri(), which has to be called from the about
dialog instead of the default function for the URI calls to work
on Windows - i.e. opening links from the dialog.

gtk_about_dialog_set_url_hook() is a deprecated method, but seems
to be the only reasonable way to make the override between GTK 2.20 -
2.24 possible. The "activate-link" signal is recomended instead,
but is not portable for GTK bellow 2.24.

An alternative would be to somehow hack into the GtkAboutDialog
and override the callback for each clickable link.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 08:52:18 -08:00
Lubomir I. Ivanov
678fffdcf4 Added the OS dependent function subsurface_launch_for_uri()
Opening URI addresses from Subsurface does not work on Windows using
the latest GTK bundle from the Gnome website. The reason lies in GIO
and GLib and how it obtains assigned applications for protocols and MIME
types.

While gtk_show_uri() should be viable for both linux.c and macos.c,
in windows.c ShellExecute() is used, which provides proper support
for the URI calls.

subsurface_launch_for_uri() returns TRUE on success.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 08:51:32 -08:00
Lubomir I. Ivanov
2330f9b379 Use the legacy GDK keyboard definitions in gps.c
display-gtk.h has a check if gdkkeysyms-compat.h or gdkkeysyms.h
has to be used. In gps.c, from such as "GDK_Up" has to be used,
so that this file compiles on older GTK.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-14 20:17:20 -08:00
Jan Schubert
90d3c5614a Centralising and redefining values as integers
This patch centralizes the definition for surface pressure, oxygen in
air, (re)defines all such values as plain integers and adapts calculations.

It eliminates 11 (!) occurrences of definitions for surface pressure and
also a few for oxygen in air.

It also rewrites the calculation for EAD, END and EADD using the new
definitons, harmonizing it for OC and CC and fixes a bug for EADD OC
calculation.

And finally it removes the unneeded variable entry_ead in gtk-gui.c.

Jan

Signed-off-by: Jan Schubert <Jan.Schubert@GMX.li>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-14 20:12:40 -08:00
Linus Torvalds
2e53a41525 Fix odd calculated deco "ripples"
Previously we calculate the ceiling at every single second, using the
interpolated depth but then only *save* the ceiling at the points where we
have a profile event (the whole deco_allowed_depth() function doesn't
change any state, so we can just drop it entirely at points that we aren't
going to save)

Why is it incorrect? I'll try to walk through my understanding of it, by
switching things around a bit.

- the whole "minimum tissue tolerance" thing could equally well be
  rewritten to be about "maximum ceiling". And that's easier to think
  about (since it's what we actually show), so let's do that.

- so turning "min_pressure" into "max_ceiling", doing the whole
  comparison inside the loop means is that we are calculating the
  maximum ceiling value for the duration of the last sample. And then
  instead of visualizing the ceiling AT THE TIME OF MAXIMUM CEILING, we
  visualize that maximal ceiling value AT THE TIME OF THE SAMPLE.

End result: we visualize the ceiling at the wrong time. We visualize
what was *a* ceiling somewhere in between that sample and the previous
one, but we then assign that value to the time of the sample itself.

So it ends up having random odd effects.

And that also explains why you only see the effect during the ascent.
During the descent, the max ceiling will be at the end of our
linearization of the sampling, which is - surprise surprise - the position
of the sample itself. So we end up seeing the right ceiling at the right
time while descending. So the visualization matches the math.

But during desaturation, the maximum ceiling is not at the end of the
sample period, it's at the beginning. So the whole "max ceiling" thing has
basically turned what should be a smooth graph into something that
approaches being a step-wise graph at each sample. Ergo: a ripple.

And doing the "max_ceiling during the sample interval" thing may sound
like the safe thing to do, but the thing is, that really *is* a false
sense of safety. The ceiling value is *not* what we compute. The ceiling
value is just a visualization of what we computed. Playing games with it
can only make the visualization of the real data worse, not better.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-14 11:13:33 -08:00
Dirk Hohndel
e0b53a5d31 Scroll the divelist to show the planned dive
Just put the code to do so in a function and reuse that function elsewhere
as well.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-13 21:36:50 -08:00
Dirk Hohndel
1ea445102e Correctly show the planned dive in the divelist
Previously we would simply show the first dive in the divelist - which
worked fine in the default sort by trip setting and assuming that there
are no dives from the future in the divelist.

With this commit we actually find the correct dive in the divelist and
select it instead. If you sort by depth you will see the dive move around
in the divelist, but it will stay selected and visible in the profile.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-13 21:01:52 -08:00
Dirk Hohndel
c8a9986451 Make sure init_decompression works for dive 0 as well
The loop would actually get entered for dive 0 and try to compare things
with dive -1. Which of course fails.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-13 21:00:49 -08:00
Dirk Hohndel
b94a93d061 During multi-dive deco calculations don't look at dives from other trips
Previously the code in init_decompression() would mindlessly walk back the
dive_table until it found a gap of at least 48h and take all those dives
into consideration when calculating tissue saturation. This goes horribly
wrong if you load dives from two divers into the same data file.

With this commit things will still turn out correctly, as long as the
dives are in separate trips in for each of the divers. So with this I can
load both Linus' and my divelog and things stay sane even on our shared
dive trips.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-13 19:37:41 -08:00
Dirk Hohndel
23ce727e62 Add support for MOD, EAD, AND and EADD in the mouse over display
- MOD: Maximum Operation Depth based on a configurable limit
- EAD: Equivalent Air Depth considering N2 and (!) O2 narcotic
- END: Equivalent Nitrogen (Narcotic) Depth considering just N2 narcotic
       (ignoring O2)
- EADD: Equivalent Air Density Depth

Please note that some people and even diving organisations have opposite
definitions for EAD and END. Considering A stands for Air, lets choose the
above. And considering N for Nitrogen it also fits in this scheme.

This patch moves N2_IN_AIR from deco.c to dive.h as this is already used
in several places and might be useful for future use also. It also
respecifies N2_IN_AIR to a more correct value of 78,084%, the former one
also included all other gases than oxygen appearing in air. If someone
needs to use the former value it would be more correct to use 1-O2_IN_AIR
instead.

Signed-off-by: Jan Schubert / Jan.Schubert@GMX.li
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-13 16:26:35 -08:00
Henrik Brautaset Aronsen
53dbccb87a Scale partial pressure graphs according to enabled gases
The max Y value of the partial pressure graph grid tends to be way too
high when only pO2 or pHe is enabled.

Signed-off-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-13 10:30:42 -08:00
Henrik Brautaset Aronsen
693ee686df Add GPS locations to some of the test dives
With Pierre-Yves' commit with a map widget, here are a couple of example
GPS locations from my own dives.

Signed-off-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-13 10:23:38 -08:00
Pierre-Yves Chibon
8ff350387d Work on a dive localisation tool using GPS coordinates
For each dive recorded, place their GPS coordinates onto a map using the
OSM-GPS-MAP library.

This map is accessible via the "log" menu or the shortcut ctrl+M (M as map).

We check for the GPS coordinates "0, 0" which are the default when we do not
have real GPS coordinates set.

[Dirk Hohndel: fixed int/float math confusion, fixed some whitespace and
               coding style issues, cleaned up some comments, added a
	       missing cast to prevent a compiler warning]

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>
Signed-Off-By: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-13 10:08:07 -08:00
Linus Torvalds
6a10700ca5 Add default filename and divelist font to prefs structure
.. and add the usual logic to not save the default values.

This also simplifies the initial system-specific setup of both of these:
since we have defaults for all the preferences that get set up at
startup, we can just initialize those defaults to the system-specific
fonts then and there.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-11 17:46:00 -08:00
Linus Torvalds
954290c70b Fix default gradient factor setting
Testing the new "don't even bother saving default values" showed that the
default values for the deco gradient factors were undefined.

Or rather, they were over-defined.

We had defaults for the UI (30 and 75 for GFlow/GFhigh respectively - the
config ones are in percent), *and* we had defaults in deco.c for the deco
code itself (0.35 and 0.75 respectively - in deco.c they are represented
as fractions, not percent).

And if the config entries had never been written, and were assumed to be
the defaults, the UI code thought the defaults were 30/75, but they had
never been *set* to those defaults, so actual default calculations
silently used the 35/75 in deco.c, which is very confusing (you could go
to the preferences page, see the 30/75 there, and it would not actually
match th evalues used for computation).

Of course, with an old config file that saves even default entries, you'd
never see that if you ever changed anything in the preferences, because
you'd always have explicit gflow/high values. But now it's much easier to
see the conflicting default values.

Fix it by just always using the UI defaults (or set values) to set the
actual deco values.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-11 12:39:54 -08:00
Linus Torvalds
c44755878c Fix SIGSEGV if no pre-existing nickname information
Loading an xml file with dive computer information without any
preexisting nickname data would try to "remember" that NULL nickname.
Causing a SIGSEGV if there was no nickname information.

The bug was introduced by commit ec38d3708d ("Move device_info handling
into a new 'device.c' file") when I inadvertently removed a bit too much
code. It actually wants to remember a missing DC nickname as an empty one.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-11 12:19:50 -08:00
Linus Torvalds
e8a896b64d Update preference saving for numeric values
This does the "don't save defaults" for numeric values too.

Also, move the preferences loading/saving to a new "prefs.c" file.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-11 12:19:34 -08:00
Lubomir I. Ivanov
c4ae58d589 gtk-gui.c: Move the download dialog related code to a new file
A new file download-dialog.c now contains all code related
to the download dialog, which was previously defined in gtk-gui.c.

Also, a new file callbacks-gtk.h now has two macros
OPTIONCALLBACK, UNITCALLBACK shared only between
download-dialog.c and gtk-gui.c.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-11 05:54:35 -08:00
Dirk Hohndel
ac376ea379 Fix Mac build
Just make the code compile on MacOS X

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-10 20:45:22 -08:00
Dirk Hohndel
6c0289daa0 Fix Windows build
Just making the code in the last commit (cross) compile on Windows.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-10 20:40:04 -08:00
Linus Torvalds
8dea49ffe2 Clean up preference saving code
The old code (on purpose) didn't try to differentiate "nonexisting
boolean configuration" with "existing boolean configuration set to
false", which is problematic if we optimize the saving to not save
default preferences at all.

Which this does.

So in addition to the logic to know about default preferences, this has
to change the interfaces for the PREF_BOOL reading code so that you can
tell the difference between "no value" and "false".

And since the previous calling convention was an abomination of doing
pointer casting and having case-statements for the config types, change
that while at it.  Both from a usage perspective *and* from a back-end
perspective it is actually much simpler to just have different functions
for the string vs boolean config read/write versions.  The OSX versions
in particular end up being one-liners.

(The GConf library is a nightmare, and doesn't seem to have any way to
know whether a boolean value exists or not, so you have to read it as a
GConfVal and then turn it into a gboolean rather than just get the "oh,
it didn't exist" as an error value).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-10 20:30:54 -08:00
Linus Torvalds
21f38190d3 Make the default preferences explicit
This makes it explicit what the default preferences are, so that we can
more easily avoid unnecessarily saving default settings.  It also makes
imperial metrics the default for the US (Burma and Liberia always get
forgotten!)

Right now we tend to be somewhat confused about defaults.  We do have
them, but then even if something has a default value, we tend to write
it out to the config file.  Which is not just unnecessary, but makes it
really hard to see after-the-fact whether the user actually wanted that
*specific* value, or whether they just wanted the default behavior.

So this prepares for having explicit configuration for when we want
something different than the defaults.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-10 20:30:45 -08:00