Use new `_in_lib` BKE_image API to re-use or load an image from/in the
expected library, including using the library path as root path for
relative file paths handling.
Using the new `BKE_image..._in_lib` API also allows to get rid of the
`check_exists` 'hack' introduced in `image_open_exec` (when support to
edit some linked data was added, in 5f9f3116db) to avoid re-using local
Image IDs for editable linked data (brush assets), since
`BKE_image_load_exists_in_lib` will now ensure to only re-use an Image
ID if it matches the target library.
This commit also simplifies/makes `ED_image_filesel_detect_sequences`
signature more to the point. It replaces the `Main` parameter by a mere
`root_path` string. The given `bmain` was indeed only used to extract
(again) a base for relative paths.
NOTE: The general idea of this fix is the same as in PR !130058, thanks
to Sean Kim for the investigation and initial fix.
Pull Request: https://projects.blender.org/blender/blender/pulls/130197
NOTE: This also required some changes to Cycles code itself, who is now
directly including `BKE_image.hh` instead of declaring a few prototypes
of these functions in its `blender/utils.h` header (due to C++ functions
names mangling, this was not working anymore).
Pull Request: https://projects.blender.org/blender/blender/pulls/130174
Previously when opening 2 images like `['img1.png' ,'img002.png']` the
sequence detection will open this images as a single image sequence.
However internally this is not a supported sequence.
To fix that this changes will also differentiate sequences
by their digit count, so if a group of images like:
`['img1.png','img2.png' ,'img002.png','img003.png']`
are open now it will create 2 images sequences instead of just one.
Ref: !120185
This moves the remaining `.c` files in the following `editors` folders to C++:
`physics`, `screen`, `sound`, `space_buttons`, `space_file`, `space_graph` and `space_image`.
One exception is `fsmenu.c` which has platform specific issues on macos and
windows. E.g. the `Carbon/Carbon.h` include also declares a `Collection` type that collides
with ours.
Also see #103343.
Pull Request: https://projects.blender.org/blender/blender/pulls/109918
