UV Sculpt: improve tool-system integration

In 2.7x UV sculpt was a kind of sub-mode
(a toggle with it's own key-map & drawing code).

Move this to an operator that uses the tool-system,
this simplifies internal logic, especially brush selection
which now matches sculpt and other paint modes.

- Remove toggle used to enable uv sculpt.
- Expose the brush, which was already used but there was no way to
  select different brushes.
- Make UV sculpt use paint paint tool slots
  (using brushes how all other paint mode currently do).
- Move UV Sculpt keymap to the tools keymap.
- Remove Q to toggle UV sculpt mode,
  S/P/G keys to switch tools.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_defaults.c b/source/blender/blenloader/intern/versioning_defaults.c
index c54e60a7635..45c2a50cc3f 100644
--- a/source/blender/blenloader/intern/versioning_defaults.c
+++ b/source/blender/blenloader/intern/versioning_defaults.c
@@ -387,6 +387,13 @@ void BLO_update_defaults_startup_blend(Main *bmain, const char *app_template)
     copy_v2_fl2(scene->safe_areas.action, 0.035f, 0.035f);
   }
 
+  if (app_template == NULL) {
+    /* Enable for UV sculpt (other brush types will be created as needed),
+     * without this the grab brush will be active but not selectable from the list. */
+    Brush *brush = BLI_findstring(&bmain->brushes, "Grab", offsetof(ID, name) + 2);
+    brush->ob_mode |= OB_MODE_EDIT;
+  }
+
   for (Brush *brush = bmain->brushes.first; brush; brush = brush->id.next) {
     brush->blur_kernel_radius = 2;
   }