[Feature] Selection of variables for filter editor

[larienna]

What I find annoying is that the filters have no parameters like in other software. You need to dig through the filter effect combination and search for variables to modify that could do something you like. But if you have no clue how the filter works, you just chance all the values one by one until you somewhat get what you want.

My suggestion would be that the designer of a filter could select variables which are meaningful to modify. Then, in the filter editor, you would only see these variables instead of the complex filter structure. Then if you really want to get into the details, you could click an advanced button and see the whole filter structure.

[su_v (suv-lp)]

Related blueprints:
* Custom predefined filters
<https://blueprints.launchpad.net/inkscape/+spec/custom-predefined-filters>
* Improving the Filter Effects Dialog with better visualization and flow
<https://blueprints.launchpad.net/inkscape/+spec/improved-filter-effects-dialog>
* A filter effects dialog for non-advanced users with higher level abstraction of effects
<https://blueprints.launchpad.net/inkscape/+spec/non-advanced-filters-ui>

Related feature requests:
Bug #506580 “filter : thumbnails of each step + disable operations after step n”
Bug #308773 “filters UI versus blender nodes”

[jazzynico (jazzynico)]

Custom predefined filters <https://blueprints.launchpad.net/inkscape/+spec/custom-predefined-filters> is currently in progress, and some filters are already available in the dev. version. But it is only useful when creating new filters, and can't be used to modify them afterward.

[jazzynico (jazzynico)]

Report linked to <https://blueprints.launchpad.net/inkscape/+spec/non-advanced-filters-ui>, which looks very close to your suggestion.