Animation play: Follow feature. Enabled from playback menu in the

[blender-staging.git] / source / blender / editors / screen / screen_ops.c

diff --git a/source/blender/editors/screen/screen_ops.c b/source/blender/editors/screen/screen_ops.c
index 6b75d21163a98ae08390181bc16eeb4acdb44519..ad3d2d1a21abeea372340142f9d9738853cb20b4 100644 (file)
--- a/source/blender/editors/screen/screen_ops.c
+++ b/source/blender/editors/screen/screen_ops.c
@@ -3469,11 +3469,29 @@ static int screen_animation_step(bContext *C, wmOperator *UNUSED(op), const wmEv
                        for (sa = window->screen->areabase.first; sa; sa = sa->next) {
                                ARegion *ar;
                                for (ar = sa->regionbase.first; ar; ar = ar->next) {
+                                       bool redraw = false;
                                        if (ar == sad->ar) {
-                                               ED_region_tag_redraw(ar);
+                                               redraw = true;
                                        }
                                        else if (match_region_with_redraws(sa->spacetype, ar->regiontype, sad->redraws)) {
+                                               redraw = true;
+                                       }
+
+                                       if (redraw) {
                                                ED_region_tag_redraw(ar);
+                                               /* do follow here if editor type supports it */
+                                               if ((sad->redraws & TIME_FOLLOW)) {
+                                                       if ((ar->regiontype == RGN_TYPE_WINDOW &&
+                                                           ELEM (sa->spacetype, SPACE_SEQ, SPACE_TIME, SPACE_IPO, SPACE_ACTION, SPACE_NLA)) ||
+                                                           (sa->spacetype == SPACE_CLIP && ar->regiontype == RGN_TYPE_PREVIEW))
+                                                       {
+                                                               float w = BLI_rctf_size_x(&ar->v2d.cur);
+                                                               if (scene->r.cfra < ar->v2d.cur.xmin || scene->r.cfra > (ar->v2d.cur.xmax)) {
+                                                                       ar->v2d.cur.xmin = scene->r.cfra;
+                                                                       ar->v2d.cur.xmax = ar->v2d.cur.xmin + w;
+                                                               }
+                                                       }
+                                               }
                                        }
                                }