[Bf-blender-cvs] [fd80b83e8e5] blender2.8: Manipulator: Support tweak removing the manipulator

[Campbell Barton]

Commit: fd80b83e8e5850d34dcddea44d80547c3685c344
Author: Campbell Barton
Date:   Tue Jan 16 18:03:15 2018 +1100
Branches: blender2.8
https://developer.blender.org/rBfd80b83e8e5850d34dcddea44d80547c3685c344

Manipulator: Support tweak removing the manipulator

===================================================================

M	source/blender/windowmanager/manipulators/intern/wm_manipulator_group.c

===================================================================

diff --git a/source/blender/windowmanager/manipulators/intern/wm_manipulator_group.c b/source/blender/windowmanager/manipulators/intern/wm_manipulator_group.c
index c4220aa3a5d..2bd218298e6 100644
--- a/source/blender/windowmanager/manipulators/intern/wm_manipulator_group.c
+++ b/source/blender/windowmanager/manipulators/intern/wm_manipulator_group.c
@@ -308,6 +308,7 @@ void MANIPULATORGROUP_OT_manipulator_select(wmOperatorType *ot)
 
 typedef struct ManipulatorTweakData {
 	wmManipulatorMap *mmap;
+	wmManipulatorGroup *mgroup;
 	wmManipulator *mpr_modal;
 
 	int init_event; /* initial event type */
@@ -375,7 +376,12 @@ static void manipulator_tweak_finish(bContext *C, wmOperator *op, const bool can
 		mtweak->mpr_modal->type->exit(C, mtweak->mpr_modal, cancel);
 	}
 	if (clear_modal) {
-		wm_manipulatormap_modal_set(mtweak->mmap, C, mtweak->mpr_modal, NULL, false);
+		/* The manipulator may have been removed. */
+		if ((BLI_findindex(&mtweak->mmap->groups, mtweak->mgroup) != -1) &&
+		    (BLI_findindex(&mtweak->mgroup->manipulators, mtweak->mpr_modal) != -1))
+		{
+			wm_manipulatormap_modal_set(mtweak->mmap, C, mtweak->mpr_modal, NULL, false);
+		}
 	}
 	MEM_freeN(mtweak);
 }
@@ -537,6 +543,7 @@ static int manipulator_tweak_invoke(bContext *C, wmOperator *op, const wmEvent *
 
 	mtweak->init_event = WM_userdef_event_type_from_keymap_type(event->type);
 	mtweak->mpr_modal = mmap->mmap_context.highlight;
+	mtweak->mgroup = mtweak->mpr_modal->parent_mgroup;
 	mtweak->mmap = mmap;
 	mtweak->flag = 0;