Provide for a dive_computer_type variable within dc structure

 This patch lays the foundation for differentiating
 between open-circuit(OC)dives and rebreather dives
 (CCR). The following were done:
 1) In dive.h add an enum type dive_computer_type
 2) In dive.h add two more fields to the dc structure:
    a) dctype  (an enum field indicating dc type)
    b) no_o2sensor (indicating number of o2 sensors for this dc)
 3) In parse-xml.c add a function trimspace that strips any
    whitespace from a string. This is used by two functions:
    utf8_string as well as by get_dc_type, described below.
    The pointer to buffer is not changed in order to ensure
    consistency when the buffer is freed.
 4) In parse-xml.c add a function get_dc_type. This parses the
    dc_type string from xml and assigns an enum value which will
    later be returned to the function that parses
    the dc variables.

Signed-off-by: Willem Ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Simplify code

Since trimspace() null terminates the string, we can simply use strdup()
here.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Add beginning of pretend CCR XML file

Note that we are missing code to write out the new attributes, so saving
this test dive back to a file loses them.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Planner: New plannerSettingsWidget

In planner mode, this replaces the globe with the dive plan and introduces
a new plannerSettingsWidget in the diveListPane. All new fields are still
disfunctional. This is WIP.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Planner: update tabstop order again

Robert's commit 708f19830e2a ("Planner: New plannerSettingsWidget")
moved several of the widgets from the maintab area to the new planner
settings widget.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Planner: don't show the planner panes by default

With commit 708f19830e2a ("Planner: New plannerSettingsWidget") we
suddenly started out showing the planner widget. Not useful. So let's
switch us back to the default screen :-)

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Delay loading of some settings until later

This early in init_ui() the settings may not be available, yet.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Much needed clean on the HTML export dialog code.

Correct usage of QFile, QString and code cleanup.

[Dirk Hohndel: plus whitespace cleanup and removal of qDebug() calls]

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Don't copy the current dive ontop of editedDive after edit has started

If you switch to edit mode by making a change to cylinders or weights,
then the data in the editedDive was changed and afterwards the current
dive was once again copied into the editedDive - even though we already
did that earlier when setting up the display.

Fixes #539

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Correct pO2 formula in CNS calculation.

In commit e58f54cac1d0 ("Fix ATM-vs-bar confusion") Linus broke the CNS
calculations; The partial pressure is fraction of gas times ambient
pressure, not divided by.

[Dirk Hohndel: identical patch sent by Robert and Anton; I combined the
               commit messages and added the ACK from the perpetrator]

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Anton Lundin <glance@acc.umu.se>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Fix tank size display

In commit 11380a5deb07 ("Really display liters with script el")
I inadvertantly broke the display of cylinder sizes in the imperial case.
This patch restores that and also tries to give slightly more useful
guidance on the number of decimals to display.

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>
Fix small whitespace issue

Fixes small whitespace issue in subsurface.pro

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