Fixes issue where lines in timeline are sometimes double-width when hovering in area.
Differential Revision: https://developer.blender.org/D8116
Reviewed by Brecht Van Lommel
When playing back animations a playhead is updated in all the animation editors.
The drawing of the playhead is part of the drawing of the main region
`RGN_TYPE_WINDOW` that redraws the whole region.
This change will draw the play head and window scrollers when updating the
screen. This affects the Action editor, Timeline, Graph editor, NLA editor and
Sequence editor. There is noticeable speedup when using complex animation files.
Spring 02_020_A.anim.blend fps went from 11.8 to 12.5 when showing a timeline
and a action editor on a Ryzen 1700.
* When playing back animation the markers don't jump up/down when near the
frame. This could be added back.
Reviewed By: Brecht van Lommel
Differential Revision: https://developer.blender.org/D8066
Draw the text with the "header text highlight" theme color, which is
rarely used, making it a good candidate for this special case.
Differential Revision: https://developer.blender.org/D7897
The old convention was easy to confuse with ScrArea.
Part of https://developer.blender.org/T74432.
This is mostly a batch rename with some manual fixing. Only single word
variable names are changed, no prefixed/suffixed names.
Brecht van Lommel and Campbell Barton both gave me a green light for
this convention change.
Also ran clan clang format on affected files.
This should only be used to change and recalculate region sizes in a DPI
independent way. To get the size with DPI applied, ARegion.winx/y should
be used instead.
Added note on this in comment.
