Equipment edit: for some reason we need a local copy of index

Calling enableEdition appears to corrupt the index that is passed into
this slot.

This doesn't fix the problem that we can't edit the cylinder start and end
pressure of a manually added dive, but at least we no longer try to edit
and invalid index.

See #582

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Add dive: remove cylinder pressures from samples

These cylinder pressures are actually just artefacts of the way we track
gas consumption in the code shared between planner and add dive. We don't
want them in the actual dive.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Don't show gaschange events at the beginning of a dive

The initial gas change event is really special - it just specifies the gas
mix from the dive computer. So don't show it as an event if that already
matches the initial gas.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Create Dive Computer configuration dialog

Create a dialog for reading and writing settings to and
from dive computers, with a menu entry in MainWindow to
open the dialog.

I will build up on this dialog and change it as needed.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Load vendor list and product list

Using code from 'downloadfromdivecomputer' class, this code
loads the vendors and products to the respective comboboxes.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Read basic details from dive computer

Added classes for reading data from dive computer. This is
at the basic level and I will expand it as I go along.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Create class to write settings to dive computer

Adds a class to write settings to dive computer, and modifies
the existing ones to integrate it.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Change dive computer family detection

Following suggestions on the mailing list, this changes the
method used to detect the dive computer family. Detection is
now done using: dc_device_get_type.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Improve writing of date and time to dive computer

Improves writing of date and time to the dive computer. This
has been tested using the Heinrichs Weikamp OSTC-3.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Improve writing of device name to dive computers.

Improves the writing of device name to the dive computer. The
code has been updated to use a switch statement.

This will make it easier to add new devices in the future.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Add brightness setting

Adds a setting to control the device's brightness. Currently I
have only the OSTC 3. Will add more afterwards.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Move divecomputer configuration code to different files

This splits the code in configuredivecomputer.cpp into multiple files.
The read and write threads are moved to configuredivecomputerthreads.h/cpp,
and the device details class is moved to devicedetails.h/.cpp

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Polish up on classes

This patch polishes up on all classes added for dive computer
configuration to give a clean workflow. The classes can now
write and read data from the OSTC 3.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Port writing of date and time to new classes

After splitting dive computer configuration classes, the date/time
setting had not been ported. This adds the same to the classes.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Backup basic settings as XML

This patch enables XML backup. We can now save the settings
to an XML file. Currently this backs up just the basic stuff
such as custom text, language and brightness.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Working XML Backup and Restore

The ConfigureDiveComputer class now has functions for complete
XML backup and restore. These dump the loaded settings on a
dive computer to an XML file, and there is an option to
restore them.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Add Support for more OSTC 3 Settings

Adds support for more OSTC 3 Settings to the reading, writing,
backup and restore functions. These settings are: last deco,
units, sampling rate, salinity, dive mode colour and compass
gain.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Change ConfigureDiveComputerDialog to use tabbed interface

Changes the dive computer configuration dialog to use a
tabbed interface. This will make it easier to add new
dive computer models to the interface.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Add more OSTC 3 settings

I am adding more OSTC 3 settings as I go along. Here, I have
added dive mode and saturation.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Remove extra entries of ConfigureDiveComputerDialog in subsurface.pro

During git rebasing, I ended up with multiple entries of this class. This
patch fixes that.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>