Outliner: Synced selection and active element highlighting

Adds a toggle to the filter menu for outliner synced selection. Enabled
by default, this ensures selection is synced between objects, bones, and
sequences. An active outliner element theme color is added to indicate
which element is active.

Synced selection is controlled on the operator level. Each operator
that modifies selection for objects, bones, sequences, or outliner
elements needs to call the respective ED_outliner_select_sync_from..
function to tag outliners to be synced.

Syncing is done lazily on outliner draw.

1 files changed, 41 insertions, 2 deletions

diff --git a/source/blender/editors/space_view3d/view3d_select.c b/source/blender/editors/space_view3d/view3d_select.c
index 725f655c8ce..37ea10773bf 100644
--- a/source/blender/editors/space_view3d/view3d_select.c
+++ b/source/blender/editors/space_view3d/view3d_select.c
@@ -88,6 +88,7 @@
 #include "ED_particle.h"
 #include "ED_mesh.h"
 #include "ED_object.h"
+#include "ED_outliner.h"
 #include "ED_screen.h"
 #include "ED_select_utils.h"
 #include "ED_sculpt.h"
@@ -1280,9 +1281,15 @@ static bool view3d_lasso_select(
     }
     else if (ob && (ob->mode & OB_MODE_POSE)) {
       changed_multi |= do_lasso_select_pose(vc, mcords, moves, sel_op);
+      if (changed_multi) {
+        ED_outliner_select_sync_from_pose_bone_tag(C);
+      }
     }
     else {
       changed_multi |= do_lasso_select_objects(vc, mcords, moves, sel_op);
+      if (changed_multi) {
+        ED_outliner_select_sync_from_object_tag(C);
+      }
     }
   }
   else { /* Edit Mode */
@@ -1303,6 +1310,9 @@ static bool view3d_lasso_select(
           break;
         case OB_ARMATURE:
           changed = do_lasso_select_armature(vc, mcords, moves, sel_op);
+          if (changed) {
+            ED_outliner_select_sync_from_edit_bone_tag(C);
+          }
           break;
         case OB_MBALL:
           changed = do_lasso_select_meta(vc, mcords, moves, sel_op);
@@ -1488,6 +1498,9 @@ static int object_select_menu_exec(bContext *C, wmOperator *op)
     Scene *scene = CTX_data_scene(C);
     DEG_id_tag_update(&scene->id, ID_RECALC_SELECT);
     WM_event_add_notifier(C, NC_SCENE | ND_OB_SELECT, scene);
+
+    ED_outliner_select_sync_from_object_tag(C);
+
     return OPERATOR_FINISHED;
   }
   else {
@@ -2350,6 +2363,9 @@ static int view3d_select_exec(bContext *C, wmOperator *op)
       if (!retval && deselect_all) {
         retval = ED_armature_edit_deselect_all_visible_multi(C);
       }
+      if (retval) {
+        ED_outliner_select_sync_from_edit_bone_tag(C);
+      }
     }
     else if (obedit->type == OB_LATTICE) {
       retval = ED_lattice_select_pick(C, location, extend, deselect, toggle);
@@ -2410,6 +2426,15 @@ static int view3d_select_exec(bContext *C, wmOperator *op)
         DEG_id_tag_update(&scene->id, ID_RECALC_SELECT);
       }
     }
+
+    if (retval) {
+      if (obact && obact->mode & OB_MODE_POSE) {
+        ED_outliner_select_sync_from_pose_bone_tag(C);
+      }
+      else {
+        ED_outliner_select_sync_from_object_tag(C);
+      }
+    }
   }
 
   /* Pass-through allows tweaks
@@ -3230,6 +3255,7 @@ static int view3d_box_select_exec(bContext *C, wmOperator *op)
           if (changed) {
             DEG_id_tag_update(&vc.obedit->id, ID_RECALC_SELECT);
             WM_event_add_notifier(C, NC_OBJECT | ND_BONE_SELECT, vc.obedit);
+            ED_outliner_select_sync_from_edit_bone_tag(C);
           }
           break;
         case OB_LATTICE:
@@ -3264,9 +3290,15 @@ static int view3d_box_select_exec(bContext *C, wmOperator *op)
     }
     else if (vc.obact && vc.obact->mode & OB_MODE_POSE) {
       changed_multi = do_pose_box_select(C, &vc, &rect, sel_op);
+      if (changed_multi) {
+        ED_outliner_select_sync_from_pose_bone_tag(C);
+      }
     }
     else { /* object mode with none active */
       changed_multi = do_object_box_select(C, &vc, &rect, sel_op);
+      if (changed_multi) {
+        ED_outliner_select_sync_from_object_tag(C);
+      }
     }
   }
 
@@ -3890,7 +3922,8 @@ static bool mball_circle_select(ViewContext *vc,
 
 /** Callbacks for circle selection in Editmode */
 
-static bool obedit_circle_select(ViewContext *vc,
+static bool obedit_circle_select(bContext *C,
+                                 ViewContext *vc,
                                  wmGenericUserData *wm_userdata,
                                  const eSelectOp sel_op,
                                  const int mval[2],
@@ -3911,6 +3944,9 @@ static bool obedit_circle_select(ViewContext *vc,
       break;
     case OB_ARMATURE:
       changed = armature_circle_select(vc, sel_op, mval, rad);
+      if (changed) {
+        ED_outliner_select_sync_from_edit_bone_tag(C);
+      }
       break;
     case OB_MBALL:
       changed = mball_circle_select(vc, sel_op, mval, rad);
@@ -3999,7 +4035,7 @@ static int view3d_circle_select_exec(bContext *C, wmOperator *op)
       obedit = vc.obedit;
 
       if (obedit) {
-        obedit_circle_select(&vc, wm_userdata, sel_op, mval, (float)radius);
+        obedit_circle_select(C, &vc, wm_userdata, sel_op, mval, (float)radius);
       }
       else if (BKE_paint_select_face_test(obact)) {
         paint_facesel_circle_select(&vc, wm_userdata, sel_op, mval, (float)radius);
@@ -4009,6 +4045,7 @@ static int view3d_circle_select_exec(bContext *C, wmOperator *op)
       }
       else if (obact->mode & OB_MODE_POSE) {
         pose_circle_select(&vc, sel_op, mval, (float)radius);
+        ED_outliner_select_sync_from_pose_bone_tag(C);
       }
       else {
         BLI_assert(0);
@@ -4029,6 +4066,8 @@ static int view3d_circle_select_exec(bContext *C, wmOperator *op)
     if (object_circle_select(&vc, sel_op, mval, (float)radius)) {
       DEG_id_tag_update(&vc.scene->id, ID_RECALC_SELECT);
       WM_event_add_notifier(C, NC_SCENE | ND_OB_SELECT, vc.scene);
+
+      ED_outliner_select_sync_from_object_tag(C);
     }
   }