mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-01 00:46:20 -05:00
6a2625664e
This is a subclass of QgsProcessingParameterNumber, but specifically for numeric parameters which represent distances. It is linked to a parent parameter, from which the distance unit will be determined, and is shown using a dedicated distance widget within the processing parameters panel. This widget shows the distance unit. This avoids the confusion when running algorithms which use distances where the unit depends on a layer or CRS parameter - e.g. the distance parameter in the buffer algorithm gives the distance in layer units... so now we can show those units directly within the dialog. Hopefully this leads to less user confusion and accidental "1000 degree buffers"! Additionally - if the unit is in degrees, a small warning icon is shown next to the parameter. The tooltip for this icon advises users to reproject data into a suitable projected local coordinate system. Initially implemented for the native buffer and single sided buffer algorithm only - but more will be added. Fixes #16290