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, 11 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_scene.c b/source/blender/makesrna/intern/rna_scene.c
index cca82abc9da..708dfb6c736 100644
--- a/source/blender/makesrna/intern/rna_scene.c
+++ b/source/blender/makesrna/intern/rna_scene.c
@@ -2867,6 +2867,17 @@ static void rna_def_tool_settings(BlenderRNA *brna)
   RNA_def_property_ui_text(prop, "Lock Object Modes", "Restrict select to the current mode");
   RNA_def_property_update(prop, NC_SCENE | ND_TOOLSETTINGS, NULL);
 
+  static const EnumPropertyItem workspace_tool_items[] = {
+      {SCE_WORKSPACE_TOOL_DEFAULT, "DEFAULT", 0, "Active Tool", ""},
+      {SCE_WORKSPACE_TOOL_FALLBACK, "FALLBACK", 0, "Select", ""},
+      {0, NULL, 0, NULL, NULL},
+  };
+
+  prop = RNA_def_property(srna, "workspace_tool_type", PROP_ENUM, PROP_NONE);
+  RNA_def_property_enum_sdna(prop, NULL, "workspace_tool_type");
+  RNA_def_property_enum_items(prop, workspace_tool_items);
+  RNA_def_property_ui_text(prop, "Drag", "Action when dragging in the viewport");
+
   /* Transform */
   prop = RNA_def_property(srna, "use_proportional_edit", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "proportional_edit", PROP_EDIT_USE);