It's still basic but will help to share code for support of various vector-able
formats, such as the logic for dimensioning them, but also the generated GUI.
Not only this, but we are paving the way for the link layers (though it'll be
after GIMP 3, we want plug-in procedures' API to stay stable) by giving a way
for a plug-in procedure to advertize a vector format support. This way, the core
will know when a source file is vector and can be directly reloaded at any
target size (right now, in my MR for link layers, the list of "vector" formats
is hardcoded, which is not reliable).
This is meant to obsolete GeglParamColor with at least an additional argument
has_alpha which we need in GIMP. It allows to advertize when a parameter wants
an opaque color, which in particular means we know when displaying a GUI to pick
colors with alpha or not.
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!
As a follow up to the previous commit, I noticed that the pdb functions
gimp-edit-cut and gimp-edit-named-cut also incorrectly used
gimp_pdb_item_is_group.
This can be seen by calling Filters/Blur/Tileable blur when a group
layer is selected. The error message was incorrect.
We replace the call here also to `! gimp_pdb_item_is_not_group`.
Calling gimp_selection_float from a Python plug-in could make it crash
with an error like Calling error for procedure 'gimp-selection-float':
Item x cannot be used because it is not a group item.
This is caused by an incorrect check for group layers.
gimp_pdb_item_is_group returns an error when the condition is False,
while we only want an error when a group layer is selected (True).
Thus we need to use gimp_pdb_item_is_not_group, which returns an error
when the item is a group, which is what we want.
These function names are a little confusing, we might need to think
about better naming sometime.
I added C/Python tests for this function, so that we can test whether
this works correctly.
Perspective shadow could call plug-in-gauss-rle with higher blur
radius than allowed in the wrapper. Raise the max value to
allow for this.
Fixes#11140
Resolves#7672
The Plasma wrapper gets the boundaries
of its filter area using gimp_item_mask_intersect().
If used on a selection, this gives the x and y
coordinates relative to the total canvas.
However, the GEGL operation will be drawn
relative to the selection - so this offsets
the effect within the selection rather than
filling the full space.
This patch fixes the problem by setting
the x and y position to 0 when there is an
active selection.
Without this, there is no easy way to quietly check for existence of a resource by name.
Needed when plugin authors can name defaults for resource args by name.
Add tests to script-fu/test/tests
For improved readability, int or boolean types are used in place of
guchar for PDB parameters where the parameter description better fits
one or the other type.
This change affects `plug-in-alienmap2` and `plug-in-maze`.
Also, the problem with `guchar` parameters is that they currently cannot
be modified via `GimpProcedureConfig` due to the type not being
supported.
After the color space invasion, the
Semi-Flatten GUI was broken since it still
used GimpRGB as its color property.
This patch fixes this by porting to
GeglColor. The GimpRGB conversion was
also removed from the PDB interface
since the GeglColor comes directly from
GimpContext.
Resolves#10992.
GimpTextLayer's color attribute was
updated from GimpRGB to GeglColor,
but gimp-text-layer-set-color still passed
in GimpRGB. This patch updates the PDB
call to match the property type.
We historically have both the colormap and palette concept in core GIMP,
though they are actually kinda the same concept, except that with
"colormap" we work with an array of raw data and it's a lot less
color-aware. It is still much more efficient in some specific cases,
such as when converting the image (we can then convert the whole palette
as a single buffer, because the image palette is space-restricted
anyway), when storing undo data or when storing/loading in XCF.
But for all the rest, let's use gimp_image_get_colormap_palette() and
work with the GimpPalette API.
I still see some limitations in GimpGradient, and in particular, they are still
always stored as RGB in GGR files. It would be nice if we could store the actual
color format. This way, if someone chooses a gradient stop as Lab or CMYK color,
that's what the gradient file would keep track of. But also even storing the
space of a color (instead of storing/loading always in sRGB, even though this
may still work fine as we store unbounded double values). This might warrant for
a v2 of GGR file format.
This commit also fixes loading of SVG gradient which was apparently broken
regarding hexadecimal color parsing.
Finally I improve gegl_color_set_alpha() by adding an alpha channel when the
initial format had none.
One of the big improvement in this commit is that text layers are now much
better at space accuracy. They were already space-aware, yet rendered as sRGB u8
only before being converted to the image's space. It means that text layers had
the following limitations:
* Any color out of sRGB gamut were trimmed.
* Precision was always 8-bit (even if the image was high-bit depth).
Now GimpTextLayout keeps track of its source space (for RGB and CMYK only, this
won't be as easy when we will support more backend, since Cairo has only RGB
support for image data) and the image TRC (in case it bypasses the color space's
TRB) and it draws within this gamut and space.
It means first that we are not limited to sRGB colors; we will draw text main
color in the full image gamut, with still 2 remaining limitations:
* Unbounded colors are impossible because Pango format (to color text) uses
hexadecimal (so even with half/float images, you can't draw out-of-gamut text
unfortunately).
* Main color precision is still 8-bit, yet a tiny bit better than before as we
at least follow TRC (so we avoid some of the precision loss when converting,
even though the bit-depth is still the biggest loss).
The outline color on the other hand is drawn through Cairo API entirely, in
float. This means that the outline color will now be without any precision loss.
Note that this depends on CAIRO_FORMAT_RGBA128F which is only available since
Cairo 1.17.2 which is not in Debian bookworm (our current baseline for GIMP
3.0). It means that the old precision will still happen with older Cairo
version, as determined by #if code at compilation.
- app: gimp_context_get_(foreground|background)() are now returning a GeglColor.
- libgimp: PDB functions named similarly in libgimp are returning a newly
allocated GeglColor too.
- A few other PDB functions (the ones using these functions) were updated and
their signature changed to use GeglColor too, when relevant. Plug-ins which
use any of the changed libgimp functions were fixed.
- GimpContext: signals "(foreground|background)-changed" are now passing a
GeglColor.
- libgimpconfig: new macro GIMP_CONFIG_PROP_COLOR using gegl_param_spec_color().
- GimpContext: properties "foreground" and "background" are now GeglParamColor
properties.
- app: All code interacting with GimpContext objects were updated to receive a
GeglColor (that they may still convert, or no, to GimpRGB for now).
- app: gimp_prop_gegl_color_button_new() was added as an alternative to
gimp_prop_color_button_new() when the property is a GeglParamColor. Eventually
the former should replace completely the latter.
- libgimpwidgets: gimp_prop_color_area_new() now works on GeglParamColor
properties only.
- libgimp: gimp_procedure_dialog_get_widget() will generate a GimpColorArea for
GeglTypeParamColor arguments.
Also the color is internally stored as GeglColor, though there are still get
APIs and signals using GimpRGB.
The equivalent PDB functions are also changed to use GeglColor, same as app/
functions.
This is a first commit to really getting rid of GimpRGB within core and
PDB/plug-in code. This will make color conversion reliability a lot better as
GeglColor will handle conversions for us. The goal is that we should keep origin
color space (for instance when picking colors in a GimpPickable, or when storing
in the FG/BG colors or in paletters) until the last second and convert at use
only.
It's still very much work-in-progress.
These 2 functions were removed in commit 89c359ce. They were in fact used and
clearly this historical API seems interesting (though we can likely do the same
thing using the drawable GeglBuffer, but this way is much easier).
This is now reimplemented using GeglColor instead of raw data.
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.
This patch implements an initial form of
non-destructive editing. Filters now stay active
instead of being immediately merged down.
A new column is added to the layer tree view, which
can be clicked to show a pop-over menu.
Filters can currently be hidden/shown, edited, reordered,
deleted, and merged down from this pop-over menu.
Currently, this works on layers and layer selections only.
Plenty of room for improvement!
Resolves#10651
The "Remove All Guides" script calls
gimp-image-find-next-guide, which per
its description can take in 0. However,
the parameter sets 1 as the minimum
value.
This patch fixes the range so that it can
accept 0, which enables the Remove All
Guides script to work again.
It also updates the script to the new
multi-layer aware API.
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.
Fixing:
> Scalar value @inargs[...] better written as $inargs[...] at pdb/lib.pl line 247.
> Scalar value @outargs[...] better written as $outargs[...] at pdb/lib.pl line 386.
Until now, it was not really possible to delete a colormap color, but since we
now use GimpPalette, people would definitely try to do so. It just makes sense
to allow doing this, but only if the color is unused.
Additionally when we do this, all the pixels refering to bigger indexes will be
edited so that they continue to refer to the same color (bigger indexes are
shifted by -1). Therefore removing an unused color does not change the image
render.
I wondered if we might want more options, e.g. the ability to delete a color
without fixing indexes (i.e. that colors over the deleted color index would
shift to the next color). This would even allow to delete used colors (though
now the last index would have to be unused one, unless we cycle colors).
Yet I don't think this should belong to this basic API. The most expected
behavior when deleting a color from an image colormap is to fix all indexes
stored in pixels so that the image still shows the same. So that's what this
function will do in this generic usage.
This is meant to replace gimp_image_get_colormap() (see also #9477).
We likely won't need a gimp_image_set_palette() because we can simply edit the
image's colormap/palette with GimpPalette API now and it is directly updated.
For instance, the following code changes the first entry in the image palette to
red, immediately:
```python
i = Gimp.list_images()[0]
p = i.get_palette()
c = Gimp.RGB()
c.r = 1.0
p.entry_set_color(0, c)
```
For this to work fine, I added a new concept to GimpData, which is that they can
be tied to a GimpImage (instead of a GFile). Image palettes are not considered
internals, they are just tied to their image, therefore they can be edited by
scripts/plug-ins.
Additionally with this commit, editing an image's colormap from libgimp API also
generates undo steps now.
It returns all the fonts (possibly more than 1) with a given name. I left the
function gimp_font_get_by_name() as a utility when one don't want to choose (or
is not able anyway, e.g. a script with minimal information), though I wondered
if we should not simplify with a single function (the new one, which is the
correct one now that it is possible to have several fonts with a given name).
It is easy to test with fonts named the same. For instance I could find 2
different fonts, both named 'Holiday'. This call in the Python console returns
both:
> Gimp.fonts_get_by_name('Holiday')
As part of this commit, I also implemented resource arrays (or subtype arrays)
as PDB arguments and return types.
… description.
- The returned value as width/height/etc. of the glyph extents (or bounding
box), not "of the font" (which doesn't mean much).
- Adding some definition for ascent and descent. This text is straight out
copied from Pango documentation comments in pango/pango-types.h.
- I don't see why we were negating the descent value. Let's keep the value sign
as defined in Pango.
- Fonctions were renamed: s/gimp_text_fontname/gimp_text_font/ and
s/gimp_text_get_extents_fontname/gimp_text_get_extents_font/
- The size_type arguments were removed. Even in 2.10, this argument was marked
as "dead" and ignored. It was only kept for API compatibility.
- The font name (string) was replaced by a GimpFont argument.
gimp_text_font() is easily tested in the Python console with:
> Gimp.text_font(Gimp.list_images()[0], None, 10, 40, "Hello World!", 1.0, True, 100, Gimp.context_get_font())
And gimp_text_get_extents_font() with:
> Gimp.text_get_extents_font("Hello World!", 100, Gimp.context_get_font())
This function is not perfect and in particular doesn't seem usable with binding
because of GimpUnit being some weird mix between an enum and some kind of class.
So this will have to be fixed too. See #8900.
… function gimp_font_get_pango_font_description().
Also updating file-pdf-save which is the only plug-in using these right now.
Note that I am not fully happy with the new function
gimp_font_get_pango_font_description() because I experienced some weird behavior
in file-pdf-save which is that some fonts were wrong if this is called after
pango_cairo_font_map_set_resolution().
But let's say this is a first step looking for improvements.
I am using the same GimpDrawableChooser with an additional drawable_type
argument to only show the appropriate tab if we want to limit what can be
chosen.
None of our plug-ins actually use a GimpLayer or GimpChannel only arg so far,
but if we have some day, or if some third-party plug-ins want to have such arg,
now they quite easily can!
This was not working properly and needed some external build script as well as
the stamp/bogus header trick like for other similar in-source generated code.
In the same time, I get rid of old meson code which was meant for when using
meson < 0.57.0 (since our requirement is now meson >= 0.59.0).
Jehan