There are no plug-ins which uses GimpRGB for procedure argument, nor is there
any base PDB procedure. We don't pass this type anymore through from/to
core/plug-ins. So let's clean the whole code out as a next step to get rid of
GimpRGB from our codebase!
This is not seen on all distributions (mostly on Debian-based ones in my
experience), but some distributions install libraries in a second-level
directory under prefix (e.g. lib/x86_64-linux-gnu/ instead of lib/ or lib64/)
whereas our prefix-guessing code for relocatable builds harcoded moving up from
1 level.
This new heuristic will assume that if the leaf directory is neither bin/ nor
starting with `lib`, then it's likely a multiarch folder and we must move up
once more to find the prefix folder.
This should also fix the problem encountered by Bruno for the current work on a
potential official AppImage.
When running GIMP in the build environment (even before it's installed), we
don't want to "fix" paths. We had the case in particular on the macOS CI where
the install PREFIX was a parent directory of the build directory and therefore
we were "fixing" some perfectly good constructed directories (set by meson) into
non-existing folder paths.
Additionally this codepath should only run when ENABLE_RELOCATABLE_RESOURCES is
set (even though this alone would not have fixed our CI issue because the macOS
build is relocatable).
Finally I am updating the gimp-data repository so that libraries are properly
found from the (now correct thanks to this commit) paths set by meson when
running gimp-console from within the build directory.
...to fully use and return GeglColor.
Also, fix gimptext-parasite sending a
GimpRGB to create a GimpText instead of
the now required GeglColor, and update
documentation in gimp_checks_get_colors
to reference GeglColor instead of GimpRGB.
gimp_metadata_set_from_exif has special code for handling old-style
GIMP exif parasite data, but didn't check for the more common case
of loading exif data from image formats that can't be handled by exiv2.
The exif data in these formats usually start with the TIFF endian
markers instead of "Exif", which caused a failure to read this
metadata for e.g. EXR images, see issue #10903.
We change this function to check for "Exif" at the start of the data,
in which case we assume it to be the old-style exif parasite and in
that case add extra metadata as was previously always done.
In all other cases, we do not add extra metadata.
… accessed from Python.
Creating a new function gimp_value_array_get_color_array(). This should normally
not be needed (it isn't in C), but because of GObject Introspection limitation
and the fact that pygobject will automatically try to convert GValue to the
embedded value, we get this weird situation where the result is unusable in
Python for certain types. One of these types is GimpColorArray.
I suggest an annotation request to GObject Introspection:
https://gitlab.gnome.org/GNOME/gobject-introspection/-/issues/492
I think that with such annotation, followed as a second step by pygobject
support, correctly handling NULL terminated C arrays generically should be
feasible by bindings.
Though I had already implemented passing GeglColor through the PDB, it was not
complete. In particular, the protocol was not able to pass GeglParamColor specs.
Fixes:
> LibGimp-WARNING **: 16:06:09.451: _gimp_gp_param_def_to_param_spec: GParamSpec type unsupported 'GeglParamColor'
This is part of the fix to issue #10811, though it's not complete yet.
We pass 2 GeglColor through the wire now. Since it is passed very early
(when sharing the configuration), I had some issues with initialization
order of GEGL, and in particular when calling gegl_init() before
gegl_config() inside _gimp_config(), I had a bunch of such criticals:
> Plugin script-fu: GLib-GObject: CRITICAL: Two different plugins tried to register 'GeglOpPlugIn-transform-core'
Anyway in the end, I store the passed colors as raw bytes and strings in
the GPConfig object, and re-construct the GeglColor last minute in
_gimp_config().
Eventually this is meant to fully replace GimpRGB (as well as GimpHSV, GimpHSL
and GimpCMYK), both in libgimp and in core code, as part of both the space
invasion and the API rework. For this first commit, I keep this new object side
by side to GimpRGB.
Due to GObject Introspection we can't have the last part of an
identifier start with a digit, since that part will be used in Python
as the identifier, and Python doesn't allow that to start with a digit.
e.g. GIMP_ROTATE_90 would be used in Python as
image.rotate(Gimp.RotationType.90)
To fix this we add DEGREES in front of the number, without a '_',
even though that looks ugly.
With the sample image that contains the XMP namespace Item with the
correct url included, it is not returning the url when we ask for it.
This seems to be an exiv2 issue, but needs more research.
What GIMP doesn't do, is report that the namespace url we were looking
for wasn't found, and make sure that this doesn't block us from
handling all XMP tags.
To improve this on our end, we check if there was an error getting the
url, and if yes:
- We generate a warning message
- We create a dummy namespace url, with a special check for the missing
Item namespace to give it the correct known namespace url.
… a GimpProcedureConfig for arguments.
This also factorizes the code to load metadata. By default, a GimpLoadProcedure
will try and load metadata from a file (if Exiv2 knows the format). The run()
function will be allowed to edit the GimpMetadata object but also the load flags
before it is actually attached to the image, allowing plug-ins to have custom
metadata handling code when needed.
This is used in the generated GUIs for GimpChoice arguments, but also for
validation of property setting.
New functions:
* gimp_choice_set_sensitive()
* gimp_string_combo_box_set_sensitivity()
These will replace the int arguments used in place of enums. The problem of int
arguments used as list of choices is that it makes calling PDB functions very
opaque. This is especially bad when a list is long, so you constantly have to
refer to the documentation to understand what a series of numbers mean in
argument lists.
And the second issue is that plug-in developers have to manually maintain a list
of values both in the GUI and in the documentation string. This help text may
get out-of-sync, may end up with missing values or whatnot. Also if it is used
as tooltips, it makes for very weird tooltips in the graphical interface, with
an overlong technical list of int-values mapping which should ideally only be
made visible in the PDB procedure browser listing.
This will be used for creating limited lists of strings as argument types for
procedures.
Ideally enums are the best type for this, but it can only be used for generic
libgimp* enum types, not custom enums created only for a given plug-in. For
this, we currently just demote the args to ints which lose any semantic. A
limited list of string will give back some semantic and some better validation,
even though it's a tiny bit more annoying to work with strings than int types
(at least in C).
Some images have Exif.Photo.PixelXDimension and Exif.Photo.PixelYDimension
metadata tags in addition to Exif.Image.ImageWidth and
Exif.Image.ImageHeight (mainly tiff images). So far, we were not updating
these optional tags, meaning they could get out-of-sync with the actual
dimensions when resizing and then exporting the image.
Since these tags are non essential, we will only update them if they are
already present.
GLib has a specific type for byte arrays: `GBytes` (and it's underlying
GType `G_TYPE_BYTES`).
By using this type, we can avoid having a `GimpUint8Array` which is a
bit cumbersome to use for both the C API, as well as bindings. By using
`GBytes`, we allow other languages to pass on byte arrays as they are
used to, while the bindings will make sure to do the right thing.
In the end, it makes the API a little bit simpler for everyone, and
reduces confusion for people who are used to working with byte arrays
in other C/GLib based code (and not having 2 different types to denote
the same thing).
Related: https://gitlab.gnome.org/GNOME/gimp/-/issues/5919
Our metadata library exiv2 only registers the most commonly used xmp
namespaces. Other namespaces need to be explicitly registered. We did not
read or try to store these namespaces, which caused a lot of warnings about
"No namespace info available for XMP prefix '...' and then we could not
process that metadata or save/export those tags.
We had to wait for gexiv2 support for registering/reading namespaces, but
that was added in gexiv2 version 0.12.2 (and the "try" version in 0.14.0).
When reading xmp metadata we process all namespaces and add them to our
metadata xml when we haven't seen them before in the same image.
A GHashTable is used to keep track of the prefixes we have seen before.
The new namespace xml tag is skipped in older GIMP versions, but will be
used now to add the namespaces when exporting images with xmp metadata.
We were using fixed size buffer with strcpy/strcat, which gave warnings in
coverity.
Even though in our case there was no chance of buffer overflow, let's
replace this by using g_strconcat, which allocates memory for the
string which we free after use.
Also get rid of a few unneeded memset's for strdata.
Photoshop can save metadata when exporting to tiff or jpeg, including
a thumbnail that we can't update. This can contain sensitive data, so we
should not export it. See issue #8383.
To do this, we add the two Photoshop specific tags that we know of to the
list of tags that should not be exported, so they won't be saved.
As per the changes in commit 005b3a05b8 and discussions in !800,
gimp_locale_directory() returns a string in the OS encoding for all but Windows
(UTF-8), i.e. the "filename" type in GIR annotations.
Now that we bumped our meson requirement, meson is complaining about
several features now deprecated even in the minimum required meson
version:
s/meson.source_root/meson.project_source_root/ to fix:
> WARNING: Project targets '>=0.56.0' but uses feature deprecated since '0.56.0': meson.source_root. use meson.project_source_root() or meson.global_source_root() instead.
s/meson.build_root/meson.project_build_root/ to fix:
> WARNING: Project targets '>=0.56.0' but uses feature deprecated since '0.56.0': meson.build_root. use meson.project_build_root() or meson.global_build_root() instead.
Fixing using path() on xdg_email and python ExternalProgram variables:
> WARNING: Project targets '>=0.56.0' but uses feature deprecated since '0.55.0': ExternalProgram.path. use ExternalProgram.full_path() instead
s/get_pkgconfig_variable *(\([^)]*\))/get_variable(pkgconfig: \1)/ to
fix:
> WARNING: Project targets '>=0.56.0' but uses feature deprecated since '0.56.0': dependency.get_pkgconfig_variable. use dependency.get_variable(pkgconfig : ...) instead
Generated *enums.c now have an additional stamp no-op header include
(see last 2 commits). Sync this change into the autotools generation
scripts to prevent back and forth useless generation of these files each
time we switch from one build system to another.
They are nearly the same as initially, except that now they include an
intermediate stamp header which will be generated by the build system.
The only 2 enums which don't need these includes (and are not versioned)
are libgimp/gimpenums.c and libgimpthumb/gimpthumb-enums.c.
Our meson build system was not properly building the enums.c file,
because they are versionned.
I did a similar trick as what I did for the pdbgen, which is that I used
a wrapper script around the existing perl script, which sets proper
options and generate a stamp file in the end (which is considered by
meson as the actual custom target, not the C file since it is generated
in the source dir).
The most important part is that the stamp file is a generated header
source (not just a random text file) which is **included** by the
generated C file. This is what will force meson to regenerate the C file
if the header is updated, **then** build using this new version, not use
an outdated versionned version (which would make for hard to diagnose
bugs), through the indirection of the intermediate stamp header.
See #4201.
See also: https://github.com/mesonbuild/meson/issues/10196#issuecomment-1080742592
In other cases we need to free value, but in this case it was used and
trying to free it caused a GIMP to crash.
Let's duplicate value, so we don't need to special case our g_free.
Alx Sa