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
Exposes all supported unit systems & types, and to_value()/to_string() functions.
Reviewed and enhanced by CampbellBarton, many thanks!
Differential Revision: https://developer.blender.org/D416
Core issue exists since ages - the thing you get from bpy.types.YOUR_OT_operator is fuzzy, and may change,
due to the fact that both Operator and OperatorProperties share the same name...
Would be cool to get rid of this issue one day, but for now it's safer to use rna acessor...
This commit is to be backported to 2.70.
- avoid passing redundant operator name to keymap property set function.
- avoid double attr lookups when setting each property.
- handle exceptions on value type mismatch.
- avoid resource warning on failed load.
- add rna property 'as_bytes' method so you can get a string property as python bytes (bypass encoding).
- make bpy.path.abspath/relpath compatible with bytes.
- add 'relpath' option to bpy_extras.image_utils.load_image(), so you can load an image relative to a path.
Notes:
* Everything is still a bit raw and sometimes hackish.
* Not every feature implemented yet.
* A bunch of cleanup is still needed.
* Doc needs to be updated too!
- bpy.path.extensions_image
- bpy.path.extensions_movie
- bpy.path.extensions_audio
eg:
if os.path.splitext(filename)[1].lower() in bpy.path.extensions_image:
... we have an image ...
Since the window manager is needed for keymaps this is kept as an exception.
some addons will need updating, but in every case I've seen addons should not be accessing the context while registering.
(bad stuff! - declaring the scene as a global variable - which crashes when the users loads a new file, manipulating the active object or scene... tsk tsk)
Handle these 2 kinds of script paths
* user script path: ~/.blender/scripts OR $BLENDER_USER_SCRIPTS
* pref script path: always bpy.context.user_preferences.filepaths.script_directory
now both are returned by bpy.utils.script_paths()
