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, 1 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_paint.h b/source/blender/blenkernel/BKE_paint.h
index b0fbf07d467..56c92b731b7 100644
--- a/source/blender/blenkernel/BKE_paint.h
+++ b/source/blender/blenkernel/BKE_paint.h
@@ -145,6 +145,7 @@ void BKE_paint_runtime_init(const struct ToolSettings *ts, struct Paint *paint);
 void BKE_paint_cavity_curve_preset(struct Paint *p, int preset);
 
 eObjectMode BKE_paint_object_mode_from_paintmode(ePaintMode mode);
+bool BKE_paint_ensure_from_paintmode(struct Scene *sce, ePaintMode mode);
 struct Paint *BKE_paint_get_active_from_paintmode(struct Scene *sce, ePaintMode mode);
 const struct EnumPropertyItem *BKE_paint_get_tool_enum_from_paintmode(ePaintMode mode);
 const char *BKE_paint_get_tool_prop_id_from_paintmode(ePaintMode mode);