Add new string members to GimpImageMapTool and use them instead of the
resp. fields of GimpToolInfo. Change ::get_operation() to return the
operation name and a lot of strings for the UI, and create both the
GeglNode and the config object in GimpOperationTool. Lots of various
cleanups in GimpImageMapTool subclasses. This is an intermediate state
on the way of making the whole filter applying mechanism more generic
and less depending on subclasses.
Add "title" and "help_id" parameters and members/properties to
GimpToolDialog, GimpToolGui, GimpOperationTool. Also make the order of
parameters more consistent.
Add GimpGeglProceure to keep track of recently used GEGL operations in
the filter history. The new procedure also takes care of running the
op in the GEGL tool, so filters-commands.c is almost empty now.
Change gimp-filter-history.c to find procedures by name instead of
comparing pointers.
The only thing missing now is rerunning a GEGL op with the last
settings (not just showing its UI).
Michael Natterer