libgimpbase:
- Mew GimpFileChooserAction enum type: basically a near-mapping of
GtkFileChooserAction (GTK is not accessible from libgimpbase) with
an added GIMP_FILE_CHOOSER_ACTION_ANY.
- New GimpParamSpecFile param spec type: based off
GimpParamSpecObject, it has a default value, but also a none_ok and
action argument. This way, we can also know from the argument type
if this is a file argument meant for selecting a normal file or a
folder, or for saving into a file, or for creating a directory.
libgimp, plug-ins:
- All existing file arguments (until now using a standard
GParamSpecObject param with GFile value type) were moved to the new
GimpParamSpecFile.
- Script-Fu in particular will now generate the appropriate param type
depending on whether it is an SF-FILENAME or SF-DIRNAME.
- File arguments are now stored between runs as a URI rather than as a
path. As far as I can tell, a GFile always has a URI, but not always
a path (in particular remote file won't have a path).
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