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[UI] Measure dialog: display friendly name for ellipsoid.

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Currently for a project using WGS 84, the measure dialog displays
the EPSG:7030 acronym as the ellipsoid name. Use the ellipsoid
description ("WGS 84 (EPSG:7030)") instead to be more user friendly.
This commit is contained in:
Even Rouault 2022-06-06 18:52:30 +02:00 committed by Nyall Dawson
parent e895677b47
commit 277daa2800
1 changed files with 22 additions and 2 deletions
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24
src/app/qgsmeasuredialog.cpp
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@ -376,6 +376,26 @@ void QgsMeasureDialog::updateUi()
mDa.setEllipsoid( QgsProject::instance()->ellipsoid() );
mConvertToDisplayUnits = true;
const auto getEllipsoidFriendlyName = [this]()
{
// If mDa.ellipsoid is an acronym (e.g "EPSG:7030"), retrieve the user
// friendly name ("WGS 84 (EPSG:7030)")
QString ellipsoid = mDa.ellipsoid();
if ( ellipsoid.contains( ':' ) )
{
const auto ellipsoidList = QgsEllipsoidUtils::definitions();
for ( const auto &ellpsDefinition : ellipsoidList )
{
if ( ellpsDefinition.acronym == ellipsoid )
{
ellipsoid = ellpsDefinition.description;
break;
}
}
}
return ellipsoid;
};
if ( mMeasureArea )
{
if ( mCartesian->isChecked() || !mCanvas->mapSettings().destinationCrs().isValid() )
@ -410,7 +430,7 @@ void QgsMeasureDialog::updateUi()
{
resultUnit = QgsUnitTypes::AreaSquareMeters;
toolTip += "<br> * " + tr( "Project ellipsoidal calculation is selected." ) + ' ';
toolTip += "<br> * " + tr( "The coordinates are transformed to the chosen ellipsoid (%1), and the area is calculated in %2." ).arg( mDa.ellipsoid(),
toolTip += "<br> * " + tr( "The coordinates are transformed to the chosen ellipsoid (%1), and the area is calculated in %2." ).arg( getEllipsoidFriendlyName(),
QgsUnitTypes::toString( resultUnit ) );
}
else
@ -488,7 +508,7 @@ void QgsMeasureDialog::updateUi()
{
resultUnit = QgsUnitTypes::DistanceMeters;
toolTip += "<br> * " + tr( "Project ellipsoidal calculation is selected." ) + ' ';
toolTip += "<br> * " + tr( "The coordinates are transformed to the chosen ellipsoid (%1), and the distance is calculated in %2." ).arg( mDa.ellipsoid(),
toolTip += "<br> * " + tr( "The coordinates are transformed to the chosen ellipsoid (%1), and the distance is calculated in %2." ).arg( getEllipsoidFriendlyName(),
QgsUnitTypes::toString( resultUnit ) );
}
else