Event System: remove tweak events in favor of click-drag

Supporting two kinds of dragging is redundant, remove tweak events as
they only supported 3 mouse buttons and added complexity from using the
'value' to store directions.

Support only click-drag events (KM_CLICK_DRAG) which can be used with
any keyboard or mouse button.

Details:

- A "direction" member has been added to keymap items and events which
  can be used when the event value is set to KM_CLICK_DRAG.

- Keymap items are version patched.

- Loading older key-maps are also updated.

- Currently the key-maps stored in ./release/scripts/presets/keyconfig/
  still reference tweak events & need updating. For now they are updated
  on load.

Note that in general this wont impact add-ons as modal operators don't
receive tweak events.

Reviewed By: brecht

Ref D14214

1 files changed, 2 insertions, 3 deletions

diff --git a/source/blender/makesrna/RNA_enum_items.h b/source/blender/makesrna/RNA_enum_items.h
index 352ff8f1f42..31db8e39e6f 100644
--- a/source/blender/makesrna/RNA_enum_items.h
+++ b/source/blender/makesrna/RNA_enum_items.h
@@ -90,9 +90,8 @@ DEF_ENUM(rna_enum_motionpath_bake_location_items)
 DEF_ENUM(rna_enum_motionpath_display_type_items)
 DEF_ENUM(rna_enum_motionpath_range_items)
 
-DEF_ENUM(rna_enum_event_value_all_items)
-DEF_ENUM(rna_enum_event_value_keymouse_items)
-DEF_ENUM(rna_enum_event_value_tweak_items)
+DEF_ENUM(rna_enum_event_value_items)
+DEF_ENUM(rna_enum_event_direction_items)
 
 DEF_ENUM(rna_enum_event_type_items)
 DEF_ENUM(rna_enum_event_type_mask_items)