Commit: 6b6105a87ebf9f81f981d8624535690aef8a798b
Author: Campbell Barton
Date:   Wed Nov 21 15:35:29 2018 +1100
Branches: blender2.8
https://developer.blender.org/rB6b6105a87ebf9f81f981d8624535690aef8a798b

Gizmo: run invoke_prepare even when the gizmo isn't modal

This is useful for setting up state for gizmos that run
operators too.

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

M       source/blender/windowmanager/gizmo/intern/wm_gizmo_map.c

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

diff --git a/source/blender/windowmanager/gizmo/intern/wm_gizmo_map.c 
b/source/blender/windowmanager/gizmo/intern/wm_gizmo_map.c
index ede0f7c96ea..ec8e012b1a7 100644
--- a/source/blender/windowmanager/gizmo/intern/wm_gizmo_map.c
+++ b/source/blender/windowmanager/gizmo/intern/wm_gizmo_map.c
@@ -945,12 +945,14 @@ void wm_gizmomap_modal_set(
 
                WM_tooltip_clear(C, win);
 
+               /* Use even if we don't have invoke, so we can setup data 
before an operator runs. */
+               if (gz->parent_gzgroup->type->invoke_prepare) {
+                       gz->parent_gzgroup->type->invoke_prepare(C, 
gz->parent_gzgroup, gz);
+               }
+
                if (gz->type->invoke &&
                    (gz->type->modal || gz->custom_modal))
                {
-                       if (gz->parent_gzgroup->type->invoke_prepare) {
-                               gz->parent_gzgroup->type->invoke_prepare(C, 
gz->parent_gzgroup, gz);
-                       }
                        const int retval = gz->type->invoke(C, gz, event);
                        if ((retval & OPERATOR_RUNNING_MODAL) == 0) {
                                return;

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