Fix 'outliner_scroll_view()' not reaching wanted element

Scrolling to an item after opening relevant parents can go wrong if said
parent e.g. the last in the list [as in: then the Outliner does not
scroll down all the way]
It stems from the fact that 'region->v2d.tot.ymin' is not up-to-date in
outliner_scroll_view after outliner_show_active opens up parents, 'tot'
will only update on a redraw.

Now calculate the trees height on the fly using
'outliner_tree_dimensions()'.

ref D9521
ref T82553

Maniphest Tasks: T82553

Differential Revision: https://developer.blender.org/D9523

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/editors/space_outliner/outliner_draw.c b/source/blender/editors/space_outliner/outliner_draw.c
index d961813d04a..22bb99530dc 100644
--- a/source/blender/editors/space_outliner/outliner_draw.c
+++ b/source/blender/editors/space_outliner/outliner_draw.c
@@ -109,7 +109,7 @@ static void outliner_tree_dimensions_impl(SpaceOutliner *space_outliner,
   }
 }
 
-static void outliner_tree_dimensions(SpaceOutliner *space_outliner, int *r_width, int *r_height)
+void outliner_tree_dimensions(SpaceOutliner *space_outliner, int *r_width, int *r_height)
 {
   *r_width = 0;
   *r_height = 0;