Merge branch 'blender-v2.92-release'

# Conflicts:
#	source/blender/editors/transform/transform_constraints.c

source/blender/editors/interface/interface_handlers.c

@@ -9014,6 +9014,7 @@ static int ui_handle_list_event(bContext *C, const wmEvent *event, ARegion *regi
 {
   int retval = WM_UI_HANDLER_CONTINUE;
   int type = event->type, val = event->val;
+  int scroll_dir = 1;
   bool redraw = false;
 
   uiList *ui_list = listbox->custom_data;
@@ -9030,6 +9031,11 @@ static int ui_handle_list_event(bContext *C, const wmEvent *event, ARegion *regi
   if (type == MOUSEPAN) {
     ui_pan_to_scroll(event, &type, &val);
 
+    /* 'ui_pan_to_scroll' gives the absolute direction. */
+    if (event->is_direction_inverted) {
+      scroll_dir = -1;
+    }
+
     /* If type still is mouse-pan, we call it handled, since delta-y accumulate. */
     /* also see wm_event_system.c do_wheel_ui hack */
     if (type == MOUSEPAN) {
@@ -9124,7 +9130,7 @@ static int ui_handle_list_event(bContext *C, const wmEvent *event, ARegion *regi
     else if (ELEM(type, WHEELUPMOUSE, WHEELDOWNMOUSE)) {
       if (dyn_data->height > dyn_data->visual_height) {
         /* list template will clamp */
-        ui_list->list_scroll += (type == WHEELUPMOUSE) ? -1 : 1;
+        ui_list->list_scroll += scroll_dir * ((type == WHEELUPMOUSE) ? -1 : 1);
 
         redraw = true;
         retval = WM_UI_HANDLER_BREAK;

source/blender/editors/transform/transform.h

@@ -722,8 +722,6 @@ bool calculateCenterActive(TransInfo *t, bool select_only, float r_center[3]);
 
 void calculatePropRatio(TransInfo *t);
 
-void getViewVector(const TransInfo *t, const float coord[3], float vec[3]);
-
 void transform_data_ext_rotate(TransData *td, float mat[3][3], bool use_drot);
 
 void freeCustomNormalArray(TransInfo *t, TransDataContainer *tc, TransCustomData *custom_data);

source/blender/editors/transform/transform_constraints.c

@@ -83,6 +83,18 @@ static void projection_matrix_calc(const TransInfo *t, float r_pmtx[3][3])
   mul_m3_m3m3(r_pmtx, t->spacemtx, mat);
 }
 
+static void view_vector_calc(const TransInfo *t, const float focus[3], float r_vec[3])
+{
+  if (t->persp != RV3D_ORTHO) {
+    sub_v3_v3v3(r_vec, t->viewinv[3], focus);
+  }
+  else {
+    copy_v3_v3(r_vec, t->viewinv[2]);
+  }
+  normalize_v3(r_vec);
+}
+
+/* ************************** CONSTRAINTS ************************* */
 #define CONSTRAIN_EPSILON 0.0001f
 
 static void constraint_plane_calc(TransInfo *t, float r_plane[4])
@@ -221,14 +233,14 @@ static void axisProjection(const TransInfo *t,
     float norm_center[3];
     float plane[3];
 
-    getViewVector(t, t_con_center, norm_center);
+    view_vector_calc(t, t_con_center, norm_center);
     cross_v3_v3v3(plane, norm_center, axis);
 
     project_v3_v3v3(vec, in, plane);
     sub_v3_v3v3(vec, in, vec);
 
     add_v3_v3v3(v, vec, t_con_center);
-    getViewVector(t, v, norm);
+    view_vector_calc(t, v, norm);
 
     /* give arbitrary large value if projection is impossible */
     factor = dot_v3v3(axis, norm);
@@ -345,7 +357,7 @@ static bool isPlaneProjectionViewAligned(const TransInfo *t, const float plane[4
 {
   const float eps = 0.001f;
   float view_to_plane[3];
-  getViewVector(t, t->center_global, view_to_plane);
+  view_vector_calc(t, t->center_global, view_to_plane);
 
   float factor = dot_v3v3(plane, view_to_plane);
   return fabsf(factor) < eps;
@@ -356,7 +368,7 @@ static void planeProjection(const TransInfo *t, const float in[3], float out[3])
   float vec[3], factor, norm[3];
 
   add_v3_v3v3(vec, in, t->center_global);
-  getViewVector(t, vec, norm);
+  view_vector_calc(t, vec, norm);
 
   sub_v3_v3v3(vec, out, in);
 
@@ -561,7 +573,9 @@ static void constraints_rotation_imp(TransInfo *t,
   }
   /* don't flip axis if asked to or if num input */
   if (r_angle && (mode & CON_NOFLIP) == 0 && hasNumInput(&t->num) == 0) {
-    if (dot_v3v3(r_vec, t->viewinv[2]) > 0.0f) {
+    float view_vector[3];
+    view_vector_calc(t, t->center_global, view_vector);
+    if (dot_v3v3(r_vec, view_vector) > 0.0f) {
       *r_angle = -(*r_angle);
     }
   }

source/blender/editors/transform/transform_generics.c

@@ -64,19 +64,6 @@
 #include "transform_orientations.h"
 #include "transform_snap.h"
 
-/* ************************** Functions *************************** */
-
-void getViewVector(const TransInfo *t, const float coord[3], float vec[3])
-{
-  if (t->persp != RV3D_ORTHO) {
-    sub_v3_v3v3(vec, coord, t->viewinv[3]);
-  }
-  else {
-    copy_v3_v3(vec, t->viewinv[2]);
-  }
-  normalize_v3(vec);
-}
-
 /* ************************** GENERICS **************************** */
 
 void drawLine(TransInfo *t, const float center[3], const float dir[3], char axis, short options)

source/blender/editors/transform/transform_gizmo_3d.c

@@ -1865,7 +1865,10 @@ static void WIDGETGROUP_gizmo_invoke_prepare(const bContext *C,
     PropertyRNA *prop_orient_type = RNA_struct_find_property(ptr, "orient_type");
     const TransformOrientationSlot *orient_slot = BKE_scene_orientation_slot_get_from_flag(
         scene, ggd->twtype_init);
-    if (orient_slot == &scene->orientation_slots[SCE_ORIENT_DEFAULT]) {
+    if ((gz == ggd->gizmos[MAN_AXIS_ROT_C]) ||
+        (orient_slot == &scene->orientation_slots[SCE_ORIENT_DEFAULT])) {
+      /* #MAN_AXIS_ROT_C always uses the #V3D_ORIENT_VIEW orientation,
+       * optionally we could set this orientation instead of unset the property. */
       RNA_property_unset(ptr, prop_orient_type);
     }
     else {