UI: Animation editor scrubbing area

The main reason for this change is to allow setting the
active frame with the left mouse button, while still being
able to select e.g. keyframes with the same mouse button.

The solution is to introduce a new scrubbing region with
a specialized keymap. There are a couple of related todos,
that will be handled in separate commits.
Those are listed in D4654.

This solves T63193.

Differential Revision: https://developer.blender.org/D4654

Reviewers: brecht, billreynish

1 files changed, 7 insertions, 17 deletions

diff --git a/source/blender/editors/space_clip/space_clip.c b/source/blender/editors/space_clip/space_clip.c
index 5364c4bc3ca..3397c5295f5 100644
--- a/source/blender/editors/space_clip/space_clip.c
+++ b/source/blender/editors/space_clip/space_clip.c
@@ -47,6 +47,7 @@
 #include "ED_mask.h"
 #include "ED_space_api.h"
 #include "ED_screen.h"
+#include "ED_scrubbing.h"
 #include "ED_select_utils.h"
 #include "ED_clip.h"
 #include "ED_transform.h"
@@ -1041,22 +1042,16 @@ static void graph_region_draw(const bContext *C, ARegion *ar)
   /* reset view matrix */
   UI_view2d_view_restore(C);
 
+  /* time-scrubbing */
+  ED_scrubbing_draw(ar, scene, sc->flag & SC_SHOW_SECONDS, true);
+
   /* scrollers */
   scrollers = UI_view2d_scrollers_calc(v2d, NULL);
   UI_view2d_scrollers_draw(v2d, scrollers);
   UI_view2d_scrollers_free(scrollers);
 
   /* scale indicators */
-  UI_view2d_draw_scale_x__discrete_frames_or_seconds(
-      ar, v2d, &v2d->hor, scene, sc->flag & SC_SHOW_SECONDS, TH_TEXT);
   UI_view2d_draw_scale_y__values(ar, v2d, &v2d->vert, TH_TEXT);
-
-  /* current frame indicator */
-  if (sc->flag & SC_SHOW_SECONDS) {
-    cfra_flag |= DRAWCFRA_UNIT_SECONDS;
-  }
-  UI_view2d_view_orthoSpecial(ar, v2d, 1);
-  ANIM_draw_cfra_number(C, v2d, cfra_flag);
 }
 
 static void dopesheet_region_draw(const bContext *C, ARegion *ar)
@@ -1093,18 +1088,13 @@ static void dopesheet_region_draw(const bContext *C, ARegion *ar)
   /* reset view matrix */
   UI_view2d_view_restore(C);
 
+  /* time-scrubbing */
+  ED_scrubbing_draw(ar, scene, sc->flag & SC_SHOW_SECONDS, true);
+
   /* scrollers */
   scrollers = UI_view2d_scrollers_calc(v2d, NULL);
   UI_view2d_scrollers_draw(v2d, scrollers);
   UI_view2d_scrollers_free(scrollers);
-
-  /* frame numbers */
-  UI_view2d_draw_scale_x__discrete_frames_or_seconds(
-      ar, v2d, &v2d->hor, scene, sc->flag & SC_SHOW_SECONDS, TH_TEXT);
-
-  /* current frame number indicator */
-  UI_view2d_view_orthoSpecial(ar, v2d, 1);
-  ANIM_draw_cfra_number(C, v2d, cfra_flag);
 }
 
 static void clip_preview_region_draw(const bContext *C, ARegion *ar)