export it to libgimp via GPConfig and add new API gimp_export_comment().
Bump the protocol version and improve variable names in both GPConfig
and libgimp/gimp.c.
Add gimp_procedure_config_begin_export() and end_export() which
are wrappers around begin_run() and end_run() and additionally
pretty much completely manage GimpMetadata handling.
A GimpProcedureConfig can provide boolean properties "save-exif",
"save-xmp" etc. in order to have them automatically managed by
begin_export() and end_export(). This also restores the feature of
overriding the procedure's saved default values with export
preferences, but not the values from the last export, like it
used to be in 2.10.
Move gimp_image_metadata_save_prepare() and save_finish() (which are
now completely handled by GimpProcedureConfig) from libgimpui to
libgimp, but keep their declarations in the libgimpui header. Not
perfect, but not finished either.
Also fix gimp_image_metadata_save_prepare() to set the affected
GimpMetadataSaveFlags to 0 when the image has no metadata at all.
Aux arguments are arbitrary values the procedure wants managed and
remembered across invocations in GimpProcedureConfig. They are not
passed to run() and are not known to the PDB, they only exist in the
procedure's config object.
which call gimp_item_get_by_id() and additionally check if the
returned item has the right type, and return NULL if not.
This is both shorter and more readable than
layer = GIMP_LAYER (gimp_item_get_by_id (id));
and additionally makes sure we don't cast e.g. a non-layer with
GIMP_LAYER(), which will give criticals but shouldn't, because the
wrong IDs can come from anywhere and are an input problem and not a
programming error (criticals are for programming errors).
Turn all ID param specs into object param specs (e.g. GimpParamImageID
becomes GimpParamImage) and convert between IDs and objects in
gimpgpparams.c directly above the the wire protocol, so all of app/,
libgimp/ and plug-ins/ can deal directly with objects down to the
lowest level and not care about IDs.
Use the actual object param specs for procedure arguments and return
values again instead of a plain g_param_spec_object() and bring back
the none_ok parameter.
This implies changing the PDB type checking functions to work on pure
integers instead of IDs (one can't check whether object creation is
possible if performing that check requires the object to already
exist).
For example gimp_foo_is_valid() becomes gimp_foo_id_is_valid() and is
not involved in automatic object creation magic at the protocol
level. Added wrappers which still say gimp_foo_is_valid() and take the
respective objects.
Adapted all code, and it all becomes nicer and less convoluted, even
the generated PDB wrappers in app/ and libgimp/.
We now have both variants, one returning a GList, and another
returning an array. Turns out that while a list is often nicer,
sometimes a random-access array really keeps the code much simpler.
Adapt all plug-ins, and clean up a bit (like use g_list_reverse() once
instead of iterating the list reversed).
This means that all functions which were returning or taking as
parameter an image id (as gint32) are now taking a GimpImage object
instead.
The PDB is still passing around an id only over the wire. But we create
an object for plug-ins to work on.
This is quite a huge API break, but is probably the best bet for the
future quality. It will make nicer API instrospection (and nicer API in
binding), will fix the issues with pspec on GimpImageID in Python
bindings (which makes the current Python API unusable as soon as we need
to work on images, which is most of our plug-ins!), etc.
Also it will allow to use signals on images, which will be a great asset
when we will finally have bi-directionnal communications (i.e. plug-ins
would be able to connect to image changes, destructions, and whatnot).
And always pass URIs to all file procedures, the ones what didn't
register as "handles remove" will only ever get local file:// URIs.
Change all file plug-ins (also legacy ones) to expect URIs instead
of filenames, and convert to local paths in the plug-in.
The wire protocol should now be almost 100% clean of non-UTF-8 strings.
because they are deprecated.
Change GIMP_ICON_TYPE_INLINE_PIXBUF to GIMP_ICON_TYPE_PIXBUF and the
libgimp API to (icon-name, GdkPixbuf, GFile). Use the file's uri and a
PNG blob of the pixbuf to pass around on the wire and for storage in
pluginrc.
Move all old wire code to gimplegacy.c and add wire code to
GimpPlugIn, which now talks with the GIMP core all by itself.
Add some more ASSERT_NO_PLUG_IN_EXISTS assertions to gimplegacy.c and
fix new code that was still using legacy API.
