default N-panel open for animation editors

The Graph, Driver, and Dopesheet's (and sub modes) properties panel
(N-Panel) are now open by default. This includes the editors in the
default Animation workspace.

Note that, because the Timeline is implemented as a special mode of the
Dopesheet, switching between Timeline and Dopesheet will *not* change
the visibility of the properties panel.

Maniphest Tasks: T97980

Differential Revision: https://developer.blender.org/D14910

5 files changed, 36 insertions, 3 deletions

diff --git a/source/blender/blenloader/intern/versioning_300.c b/source/blender/blenloader/intern/versioning_300.c
index bbbeba4d687..fa3789ea590 100644
--- a/source/blender/blenloader/intern/versioning_300.c
+++ b/source/blender/blenloader/intern/versioning_300.c
@@ -875,6 +875,34 @@ void do_versions_after_linking_300(Main *bmain, ReportList *UNUSED(reports))
    */
   {
     /* Keep this block, even when empty. */
+
+    {
+      /* In the Dope Sheet, for every mode other than Timeline, open the Properties panel. */
+      LISTBASE_FOREACH (bScreen *, screen, &bmain->screens) {
+        LISTBASE_FOREACH (ScrArea *, area, &screen->areabase) {
+          LISTBASE_FOREACH (SpaceLink *, sl, &area->spacedata) {
+            if (sl->spacetype != SPACE_ACTION) {
+              continue;
+            }
+
+            /* Skip the timeline, it shouldn't get its Properties panel opened. */
+            SpaceAction *saction = (SpaceAction *)sl;
+            if (saction->mode == SACTCONT_TIMELINE) {
+              continue;
+            }
+
+            const bool is_first_space = sl == area->spacedata.first;
+            ListBase *regionbase = is_first_space ? &area->regionbase : &sl->regionbase;
+            ARegion *region = BKE_region_find_in_listbase_by_type(regionbase, RGN_TYPE_UI);
+            if (region == NULL) {
+              continue;
+            }
+
+            region->flag &= ~RGN_FLAG_HIDDEN;
+          }
+        }
+      }
+    }
   }
 }
 
diff --git a/source/blender/blenloader/intern/versioning_defaults.c b/source/blender/blenloader/intern/versioning_defaults.c
index dfd98cb94f3..a2e3fd5346e 100644
--- a/source/blender/blenloader/intern/versioning_defaults.c
+++ b/source/blender/blenloader/intern/versioning_defaults.c
@@ -134,6 +134,14 @@ static void blo_update_defaults_screen(bScreen *screen,
           }
         }
       }
+      else {
+        /* Open properties panel by default. */
+        LISTBASE_FOREACH (ARegion *, region, &area->regionbase) {
+          if (region->regiontype == RGN_TYPE_UI) {
+            region->flag &= ~RGN_FLAG_HIDDEN;
+          }
+        }
+      }
     }
     else if (area->spacetype == SPACE_GRAPH) {
       SpaceGraph *sipo = area->spacedata.first;
diff --git a/source/blender/editors/space_action/space_action.c b/source/blender/editors/space_action/space_action.c
index 3e507f73d1a..166a4351377 100644
--- a/source/blender/editors/space_action/space_action.c
+++ b/source/blender/editors/space_action/space_action.c
@@ -90,7 +90,6 @@ static SpaceLink *action_create(const ScrArea *area, const Scene *scene)
   BLI_addtail(&saction->regionbase, region);
   region->regiontype = RGN_TYPE_UI;
   region->alignment = RGN_ALIGN_RIGHT;
-  region->flag = RGN_FLAG_HIDDEN;
 
   /* main region */
   region = MEM_callocN(sizeof(ARegion), "main region for action");
diff --git a/source/blender/editors/space_graph/space_graph.c b/source/blender/editors/space_graph/space_graph.c
index 43621d74e79..3dd21fd22c6 100644
--- a/source/blender/editors/space_graph/space_graph.c
+++ b/source/blender/editors/space_graph/space_graph.c
@@ -90,7 +90,6 @@ static SpaceLink *graph_create(const ScrArea *UNUSED(area), const Scene *scene)
   BLI_addtail(&sipo->regionbase, region);
   region->regiontype = RGN_TYPE_UI;
   region->alignment = RGN_ALIGN_RIGHT;
-  region->flag = RGN_FLAG_HIDDEN;
 
   /* main region */
   region = MEM_callocN(sizeof(ARegion), "main region for graphedit");
diff --git a/source/blender/editors/space_nla/space_nla.c b/source/blender/editors/space_nla/space_nla.c
index 13035a9d5fd..1dd5bb41fef 100644
--- a/source/blender/editors/space_nla/space_nla.c
+++ b/source/blender/editors/space_nla/space_nla.c
@@ -79,7 +79,6 @@ static SpaceLink *nla_create(const ScrArea *area, const Scene *scene)
   BLI_addtail(&snla->regionbase, region);
   region->regiontype = RGN_TYPE_UI;
   region->alignment = RGN_ALIGN_RIGHT;
-  region->flag = RGN_FLAG_HIDDEN;
 
   /* main region */
   region = MEM_callocN(sizeof(ARegion), "main region for nla");