Fix sequencer preview/strip checks

- Drawing annotations used a deprecated value to detect
  if drawing was supported.
- ED_space_sequencer_check_show_strip was checking the preview
  image type (which doesn't impact strip display).

Signed-off-by: Campbell Barton <ideasman42@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/editors/gpencil/annotate_paint.c b/source/blender/editors/gpencil/annotate_paint.c
index 59ea105fbbb..8924865f5e1 100644
--- a/source/blender/editors/gpencil/annotate_paint.c
+++ b/source/blender/editors/gpencil/annotate_paint.c
@@ -1311,7 +1311,7 @@ static bool annotation_session_initdata(bContext *C, tGPsdata *p)
       p->align_flag = &ts->gpencil_v2d_align;
 
       /* check that gpencil data is allowed to be drawn */
-      if (sseq->mainb == SEQ_DRAW_SEQUENCE) {
+      if (!((sseq->mainb == SEQ_DRAW_IMG_IMBUF) && (region->regiontype == RGN_TYPE_PREVIEW))) {
         p->status = GP_STATUS_ERROR;
         return 0;
       }