* Attempt to improve readability by using focused, coherent helper classes.
* Replace ListBase with blender::Vector, which is more efficient and has a
better API.
* Split user reporting from error checking.
* Use namespace (as we usually do for C++ code).
* Remove unused headers
It seems generally preferred to have new files be created with C++.
The only reason I didn't do that when I initially created the files is that I
was unsure about some C-API aspect.
Also includes some minor C++ related cleanup (nullptr instead of NULL, remove
redundant `struct` keyword).
The Asset Browser will be disabled and not available for the 2.92 release. In
alpha/beta builds, there will be an "Asset Browser" option under Preferences >
Experimental, if the developer extras are enabled.
Note that this also disables related UI elements (e.g. "Mark Asset" buttons,
Preferences settings for asset libraries, etc.).
The code is still in master of course, development and testing will continue
there. But there simply needs to be too much polishing and fixing before the
2.92 release, plus there are some design decisions to be reevaluated.
Check the milestone 1 project to follow ongoing work:
https://developer.blender.org/project/view/124/
* This way you don't have to look up the function declaration to know what the
boolean value means.
* You can call the function in a loop over the available sizes and pass the
index as size.
* Makes it easier to add a new size in future if needed.
This makes it possible to turn data-blocks into assets and back into normal
data-blocks. A core design decision made for the asset system is that not every
data-block should be an asset, because not every data-block is made for reuse.
Users have to explicitly mark data-blocks as assets.
Exposes "Mark Asset" and "Clear Asset" in Outliner context menus (currently ID
Data submenu) and button context menus. We are still not too happy with the
names, they may change.
This uses the new context members to pass data-blocks to operators, added in
af008f5532 and 0c1d476923.
Part of the first Asset Browser milestone. Check the #asset_browser_milestone_1
project milestone on developer.blender.org.
Differential Revision: https://developer.blender.org/D9717
Reviewed by: Brecht Van Lommel
