This is a continuation of:
- #8db3dead87e385f2798356d
- #5c97d22b16320874dbe1
This commit only affects users that have multiple GRASS installations on
their Macs. Using the most recent GRASS version is what we do on Linux too.
After @Nyalldawson suggestion [1], we've implemented a Processing plugin
that exposes a GRASS Addon [2]. In order to do this we had to subclass
`Grass7AlgorithmProvider` and override `createAlgsList()`.
`createAlgsList()` had to be overriden in order to change the
"description folder" location.
Nyall wrote:
> And if you do it right (and only import existing
> processing grass code, minimising the copy/paste of this code), then
> your provider will automatically inherit any future fixes and
> features added to the main grass provider.
With this commit we convert the `descriptionFolder` to a class attribute
and in this way, subclasses of `Grass7AlgorithmProvider` will no longer
have to override `createAlgsList()` and will be able to continue inheriting
future enhancements.
References:
1. https://lists.osgeo.org/pipermail/qgis-developer/2019-February/056155.html
2. 948820b1c0/estimap_recreation_provider.py (L40-59)
We no longer require the seperate CRS parameter, because the extent
parameter contains the CRS information itself. This means the algorithm
is simplified to just picking the layer and drawing the desired area
on the canvas.
generated filename for outputs
Previously they were just echoing the input parameter value,
which isn't always a string and accordingly was broken for
temporary outputs. This caused models to break when the output
of a GDAL algorithm was used in a subsequent model step.
Brings back QGIS 2.18's ability to directly convert a Processing model
to an equivalent Processing Python script algorithm, correctly
updated and working in the 3.x API.
Available from the model dialog, and from the right-click context
menu on an existing model.
Sponsored by Solspec
- fix parameter can get converted to plain number parameter after edits
- allow parameter to be linked to parent parameters, so that the
correct distance unit and choices are shown for the parameter
