Paint: decouple op->customdata from PaintStroke

Previously, all operators using `PaintStroke` would have to store
the stroke in `op->customdata`. That made it impossible to store
other operator specific data in `op->customdata` that was unrelated
to the stroke.

This patch changes it so that the `PaintStroke` is passed to api
functions as a separate argument, which allows storing the stroke
as a subfield of some other struct in `op->customdata`.

1 files changed, 7 insertions, 4 deletions

diff --git a/source/blender/editors/sculpt_paint/paint_intern.h b/source/blender/editors/sculpt_paint/paint_intern.h
index f1e79b98b83..f7447ec31b8 100644
--- a/source/blender/editors/sculpt_paint/paint_intern.h
+++ b/source/blender/editors/sculpt_paint/paint_intern.h
@@ -62,7 +62,7 @@ struct PaintStroke *paint_stroke_new(struct bContext *C,
                                      StrokeRedraw redraw,
                                      StrokeDone done,
                                      int event_type);
-void paint_stroke_free(struct bContext *C, struct wmOperator *op);
+void paint_stroke_free(struct bContext *C, struct wmOperator *op, struct PaintStroke *stroke);
 
 /**
  * Returns zero if the stroke dots should not be spaced, non-zero otherwise.
@@ -84,9 +84,12 @@ bool paint_supports_jitter(enum ePaintMode mode);
  * Called in paint_ops.c, on each regeneration of key-maps.
  */
 struct wmKeyMap *paint_stroke_modal_keymap(struct wmKeyConfig *keyconf);
-int paint_stroke_modal(struct bContext *C, struct wmOperator *op, const struct wmEvent *event);
-int paint_stroke_exec(struct bContext *C, struct wmOperator *op);
-void paint_stroke_cancel(struct bContext *C, struct wmOperator *op);
+int paint_stroke_modal(struct bContext *C,
+                       struct wmOperator *op,
+                       const struct wmEvent *event,
+                       struct PaintStroke *stroke);
+int paint_stroke_exec(struct bContext *C, struct wmOperator *op, struct PaintStroke *stroke);
+void paint_stroke_cancel(struct bContext *C, struct wmOperator *op, struct PaintStroke *stroke);
 bool paint_stroke_flipped(struct PaintStroke *stroke);
 bool paint_stroke_inverted(struct PaintStroke *stroke);
 struct ViewContext *paint_stroke_view_context(struct PaintStroke *stroke);