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, 1 insertions, 1 deletions

diff --git a/source/blender/editors/interface/interface_context_menu.c b/source/blender/editors/interface/interface_context_menu.c
index 34a20b91172..07efcdcbe38 100644
--- a/source/blender/editors/interface/interface_context_menu.c
+++ b/source/blender/editors/interface/interface_context_menu.c
@@ -201,7 +201,7 @@ static uiBlock *menu_add_shortcut(bContext *C, ARegion *region, void *arg)
   /* XXX this guess_opname can potentially return a different keymap
    * than being found on adding later... */
   wmKeyMap *km = WM_keymap_guess_opname(C, idname);
-  wmKeyMapItem *kmi = WM_keymap_add_item(km, idname, EVT_AKEY, KM_PRESS, 0, 0);
+  wmKeyMapItem *kmi = WM_keymap_add_item(km, idname, EVT_AKEY, KM_PRESS, 0, 0, KM_ANY);
   const int kmi_id = kmi->id;
 
   /* This takes ownership of prop, or prop can be NULL for reset. */