Dopesheet: enable Show Keyframes and Interpolation by default.

Make the option enabled by default, and enable it in old files,
unless Show Extremes is enabled.

However, suppress it for the Timeline, because its View menu
doesn't include the option.

Reviewers: billreynish, brecht

Differential Revision: https://developer.blender.org/D4678

1 files changed, 16 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_280.c b/source/blender/blenloader/intern/versioning_280.c
index 952c3646e2e..ce2345b44db 100644
--- a/source/blender/blenloader/intern/versioning_280.c
+++ b/source/blender/blenloader/intern/versioning_280.c
@@ -3096,6 +3096,22 @@ void blo_do_versions_280(FileData *fd, Library *UNUSED(lib), Main *bmain)
 		}
 	}
 
+	if (!MAIN_VERSION_ATLEAST(bmain, 280, 57)) {
+		/* Enable Show Interpolation in dopesheet by default. */
+		for (bScreen *screen = bmain->screens.first; screen; screen = screen->id.next) {
+			for (ScrArea *sa = screen->areabase.first; sa; sa = sa->next) {
+				for (SpaceLink *sl = sa->spacedata.first; sl; sl = sl->next) {
+					if (sl->spacetype == SPACE_ACTION) {
+						SpaceAction *saction = (SpaceAction *)sl;
+						if ((saction->flag & SACTION_SHOW_EXTREMES) == 0) {
+							saction->flag |= SACTION_SHOW_INTERPOLATION;
+						}
+					}
+				}
+			}
+		}
+	}
+
 	{
 		/* Versioning code until next subversion bump goes here. */
 	}