space works again
This commit restores the support for using Grease Pencil in the Sequence Editor
image preview region, making it possible to scribble on footage for review
purposes again. Due to internal changes in how the Sequencer handles the image
drawing for this stuff (i.e. it is now fully based on View2D instead of trying
to implement its own little crazy offset+zoom stuff), a lot of the old code for
handling those offsets is no longer needed. Instead, one of the "standard" cases
is now used, and works quite well.
Bugfixes:
* View-space Grease Pencil drawing was done in wrong place (before view2d
restore)
* Grease Pencil entry in RNA had wrong/missing type
Credits:
* DingTo - initial patch/attempt at restoring support
* Aligorith - solved the "offset problems"
* Remove all code for Texture and Sequencer plugin system, this never worked in 2.5x / 2.6x and is therefore not needed anymore.
* DNA structures are kept, all read/writefile code is gone.
... instead add scene.sequencer_editor_create / clear, these match id.animation_data_* functions.
- refactor for names, for scene level functions call them BKE_sequencer_*
* Remove RNA, Operator and UI for Texture and Sequence plugins.
Since 2.5x no effort has been done to bring that back, so there is simply no reason in keeping that code and the UI for that ;-)
* Low Level code still exists and is unchanged.
* Remove some non used *_button_register functions, panels are done in python.
* Remove do_node_region_buttons, was not used anymore.
Fix:
* Only show Grease Pencil panel in the Node editor, when there is a valid nodetree.
Currently copies behavior of clip and image editors:
- On file load, all strip will reference clip they're using
- On adding new strip, clip would be referenced only if it've got zero user
- On removing strip clip wouldn't be de-referenced to prevent clip editors
pointing to zero-counted datablocks.
Not actually ideal from human beings point of view, but referencing/dereferencing
clip on each strip add/delete is getting crappy because of current logic of how
clip datablocks are referenced from clip editor (which is designed to work fine with
loading files without loading UI).
After discussion with Campbell we found much nicer solution which
keeps operation with data much more clear:
- Refresh Sequencer is totally harmless, do not touch actual data
and just removes everything from cache
- Reload Strip will reload data and adjust it's length for all
selected strips without affecting on length of strip itself
- Reload Strip and Adjust length will do the same but will also
adjust length of strip itself.
(also fixes special request from Ian for Mango)
Added operator to update actual content length of all selected strips.
Can be useful for scenes and movies as well after doing making changes to
scene/movie.
Can be improved further to deal better with cases when strip has got effect
and it's get reshuffled because of overlapping after changing it's length.
This adds movieclip input support to the sequencer, thereby making
undistorted and stabilized footage available without a seperate render step.
Also: removes some old cruft code from the sequencer:
* new_tstripdata wasn't used anymore
* StripElems were allocated for SCENE strips on full length, wasting memory
Added a comment, that hopefully makes things a little bit clearer:
StripElems are *only* usefull for MOVIE + IMAGE strips for all other strip
types one can set this pointer to NULL. (If that should cause otherwise
problems, then the code that doesn't check for NULL is to blame!)
