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Helpers: add get_cylinder_used_gas_string()

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get_cylinder_used_gas_string() retrieves used gas per cylinder
with optional units display.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Lubomir I. Ivanov 2013-10-03 17:50:38 +03:00 • committed by Dirk Hohndel
parent c478ea30cb
commit 50e74f4565
2 changed files with 32 additions and 0 deletions
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1
helpers.h
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@ -16,6 +16,7 @@ QString get_depth_string(int mm, bool showunit = false, bool showdecimal = true)
QString get_depth_unit();
QString get_weight_string(weight_t weight, bool showunit = false);
QString get_weight_unit();
QString get_cylinder_used_gas_string(cylinder_t *cyl, bool showunit = false);
QString get_temperature_string(temperature_t temp, bool showunit = false);
QString get_temp_unit();
QString get_volume_string(volume_t volume, bool showunit = false);

31
qt-gui.cpp
View file

@ -233,6 +233,37 @@ QString get_weight_unit()
return "lbs";
}
/* these methods retrieve used gas per cylinder */
static unsigned start_pressure(cylinder_t *cyl)
{
return cyl->start.mbar ? : cyl->sample_start.mbar;
}
static unsigned end_pressure(cylinder_t *cyl)
{
return cyl->end.mbar ? : cyl->sample_end.mbar;
}
QString get_cylinder_used_gas_string(cylinder_t *cyl, bool showunit)
{
int decimals;
const char *unit;
double gas_usage;
/* Get the cylinder gas use in mbar */
gas_usage = start_pressure(cyl) - end_pressure(cyl);
/* Can we turn it into a volume? */
if (cyl->type.size.mliter) {
gas_usage = bar_to_atm(gas_usage / 1000);
gas_usage *= cyl->type.size.mliter;
gas_usage = get_volume_units(gas_usage, &decimals, &unit);
} else {
gas_usage = get_pressure_units(gas_usage, &unit);
decimals = 0;
}
// tr("%.*f %s"
return QString("%1 %2").arg(gas_usage, 0, 'f', decimals).arg(showunit ? unit : "");
}
QString get_temperature_string(temperature_t temp, bool showunit)
{
if (prefs.units.temperature == units::CELSIUS) {