Expose our `BKE_image_load_exists` feature through an optional parameter to `Image.load()`.
Extend `image_utils.load_image()` with two optional parameters, to return existing image datablock
if possible, and in that case, to force reloading said image.
Needed by incomming 'import images as planes' addon enhancement.
Extensions such as ".tar.gz" are now also supported. Before this patch,
ensure_ext('demo.tar.gz', '.tar.gz') would return 'demo.tar.tar.gz'.
This results in issues with the `ExportHelper` mix-in class; clicking
an existing file in the file dialogue warns about overwriting it
(highlighting the input box in red), but then saves to a different
file.
Also added a unit test for the new behaviour.
Reviewers: mont29, campbellbarton
Reviewed By: campbellbarton
Differential Revision: https://developer.blender.org/D1498
Root of the issue was, preview generator was filling ID preview with unsigned int,
when RNA only knows of signed integers (and thus generates a python exception
when converting uint outside of int range)...
Using the brand new and much simple float pixels accessor to PreviewImage now.
Why this was working perfectly OK (it seems...) under Linux, and why error (py exception)
was so badly and misleadingly reported on Windows, remains pitch black mystery to me.
Cannot reproduce the issue here on linux, but have the feeling windows builds are much
more easily broken with referencing bad data from bpy. So here guessing direct loop
over bpy.data.xxx when you do add and remove stuff from said xxx inside the loop
is not a good idea - which seems logical in the end. :P
Not much to add, you can now clear previews from current .blend file, or a set of non-opened files.
Likewise, you can generate previews (for mat/tex, objects, groups, scenes, ...).
This is basically a bad-level call: ui scripts are registered *after*
the modules. It only works for addons because those are loaded even
later.
Now the nodeitems_utils module just defines a function which is then
called by the UI script, rather than the other way around.
Would run register() twice causing warning with `register_module()`
which expects new classes to be defined.
Now run unregister() before re-registering.
bpy.path.clean_name() and AddPresetBase.as_filename() were doing
inefficient search-replace of individual characters.
Use cached replacement table instead.
The addons tab in the User Settings window would be empty, due to
a FileNotFound error. This error can be caused by a broken symlink,
which is now treated the same was as a file that misses its bl_info
dictionary.
Enum's itemf callback can be called without context in some cases (UI, doc generation...).
Python's enum properties did not handle this at all - it's kind of odd this did not cause
more trouble and wasn't notice earlier... Probably dynamic enums using context are not
much used in py code.
Note about nodes: those are heavy users of dynamic enum with context. Now,
we expect `NodeCategory.poll()` and `NodeItem.poll()` to always be called with
a valid context (since when there is no context available, we can assume `poll()`
is always True). `NodeCategory.items()`, however, must accept NULL context, so if
you use custom `items` callable for your custom node categories, you may need
to update it (as was done here for builtin `node_group_items()`).
- check for class/static methods assumed nonzero args.
- subclass references and set-flag items are now sorted.
- use 'order' for Py operator mix-ins,
so operator settings don't show in random order.
This commit mainly:
* Exposes PreviewImage struct in RNA, including ways for user to set images data.
* Adds a new kind of PreviewImage, using a file path and IMB_thumb to get image.
* Adds a new kind of custom icon using PreviewImage, unrelated to ID previews system.
* Adds a python API (utils.previews) to allow python scripts to access those custom previews/icons.
Note that loading image from files' thumbnails is done when needed (deferred loading), not
when defining the custom preview/icon.
WARNING: for release addons who would want to use this, please keep it to a strict minimum, really needed level.
We do not want our UI to explode under hundreds of different flashy icons!
For more info, see also the release notes of Blender 2.75 (http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.75/Addons)
and the example/templates featured with Blender.
Patch by Campbell (ideasman42), Inês (brita) and Bastien (mont29).
Differential Revision: https://developer.blender.org/D1255
