Tool System: experimental fallback tool support

Implement T66304 as an experimental option,
available under the preferences "Experimental" section.

- When enabled most tools in the 3D view have a gizmo.
- Dragging outside the gizmo uses the 'fallback' tool.
- The fallback tool can be changed or disabled in the tool options
  or from a pie menu (Alt-W).

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index 64bca38882f..aa69b49c391 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -5845,6 +5845,11 @@ static void rna_def_userdef_experimental(BlenderRNA *brna)
                            "All Experimental Features",
                            "Expose all the experimental features in the user interface");
   RNA_def_property_update(prop, 0, "rna_userdef_update");
+
+  prop = RNA_def_property(srna, "use_tool_fallback", PROP_BOOLEAN, PROP_NONE);
+  RNA_def_property_boolean_sdna(prop, NULL, "use_tool_fallback", 1);
+  RNA_def_property_ui_text(prop, "Fallback Tool Support", "Allow selection with an active tool");
+  RNA_def_property_update(prop, 0, "rna_userdef_update");
 }
 
 static void rna_def_userdef_addon_collection(BlenderRNA *brna, PropertyRNA *cprop)