[Bf-blender-cvs] [a040d2a93a7] blender-v3.0-release: Fix T90592: Incorrect scrollbar range with backdrop

[Richard Antalik]

Commit: a040d2a93a7d5b615dc7d408925f00e87a603472
Author: Richard Antalik
Date:   Mon Nov 15 20:28:11 2021 +0100
Branches: blender-v3.0-release
https://developer.blender.org/rBa040d2a93a7d5b615dc7d408925f00e87a603472

Fix T90592: Incorrect scrollbar range with backdrop

`v2d->tot` rect was set for backdrop drawing. Set range before drawing
scrollbars.

Reviewed By: Severin

Differential Revision: https://developer.blender.org/D13099

===================================================================

M	source/blender/editors/space_sequencer/sequencer_draw.c

===================================================================

diff --git a/source/blender/editors/space_sequencer/sequencer_draw.c b/source/blender/editors/space_sequencer/sequencer_draw.c
index 3374ff11726..72e39d369a5 100644
--- a/source/blender/editors/space_sequencer/sequencer_draw.c
+++ b/source/blender/editors/space_sequencer/sequencer_draw.c
@@ -2721,8 +2721,6 @@ void draw_timeline_seq(const bContext *C, ARegion *region)
   }
 
   UI_view2d_view_ortho(v2d);
-  /* Get timeline bound-box, needed for the scroll-bars. */
-  SEQ_timeline_boundbox(scene, SEQ_active_seqbase_get(ed), &v2d->tot);
   draw_seq_backdrop(v2d);
   if ((sseq->flag & SEQ_SHOW_OVERLAY) && (sseq->timeline_overlay.flag & SEQ_TIMELINE_SHOW_GRID)) {
     U.v2d_min_gridsize *= 3;
@@ -2806,5 +2804,8 @@ void draw_timeline_seq_display(const bContext *C, ARegion *region)
   }
 
   ED_time_scrub_draw_current_frame(region, scene, !(sseq->flag & SEQ_DRAWFRAMES));
+
+  const ListBase *seqbase = SEQ_active_seqbase_get(SEQ_editing_get(scene));
+  SEQ_timeline_boundbox(scene, seqbase, &v2d->tot);
   UI_view2d_scrollers_draw(v2d, NULL);
 }