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Show altitude corresponding to surface pressure

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In the information tab, presenting atmospheric pressure is a bit
unintuitive because the diver cannot easily relate that to altitude.

For the Atm. Pressure widget in the Information tab this code does:
If the atmospheric pressure for a dive exists and the user selects
the 'm' or 'ft' option from the combobox, then the estimated altitude
is shown in the text box.

Signed-off-by: willemferguson <willemferguson@zoology.up.ac.za>
This commit is contained in:
willemferguson 2019-11-11 08:19:05 +02:00 committed by Dirk Hohndel
parent e434b5aa40
commit ebaac21ef5
1 changed files with 12 additions and 2 deletions
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14
desktop-widgets/tab-widgets/TabDiveInformation.cpp
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@ -249,9 +249,11 @@ void TabDiveInformation::updateTextBox(int event) // Either the text box has bee
double altitudeVal; // maintained even though two independent events trigger saving the text box contents.
if (current_dive) {
switch (ui->atmPressType->currentIndex()) {
case 0: // If an atm pressure has been specified in mbar:
case 0: // If atm pressure in mbar has been selected:
if (event == TEXT_EDITED) // this is only triggered by on_atmPressVal_editingFinished()
atmpress.mbar = ui->atmPressVal->text().toInt(); // use the specified mbar pressure
else // if no pressure has been typed, then show existing dive pressure
ui->atmPressVal->setText(QString::number(current_dive->surface_pressure.mbar));
break;
case 1: // If an altitude has been specified:
if (event == TEXT_EDITED) { // this is only triggered by on_atmPressVal_editingFinished()
@ -264,7 +266,15 @@ void TabDiveInformation::updateTextBox(int event) // Either the text box has bee
ui->atmPressVal->setText(ui->atmPressVal->text().sprintf("%d",atmpress.mbar));
ui->atmPressType->setCurrentIndex(0); // reset combobox to mbar
} else { // i.e. event == COMBO_CHANGED, that is, "m" or "ft" was selected from combobox
ui->atmPressVal->clear(); // Clear the text box so that altitude can be typed
// Show estimated altitude
bool ok;
double convertVal = 0.0010; // Metric conversion fro mm to m
int pressure_as_integer = ui->atmPressVal->text().toInt(&ok,10);
if (ok && ui->atmPressVal->text().length()) { // Show existing atm press as an altitude:
if (prefs.units.length == units::FEET) // For imperial units
convertVal = mm_to_feet(1); // convert from mm to ft
ui->atmPressVal->setText(QString::number((int)(pressure_to_altitude(pressure_as_integer) * convertVal)));
}
}
break;
case 2: // i.e. event = COMBO_CHANGED, that is, the option "Use dc" was selected from combobox