master db5d2a4407: Resolve xwidget scrolling mysteries

[Po Lu]

branch: master
commit db5d2a4407d9016b09155477ccb6eafe5a17a0dd
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Resolve xwidget scrolling mysteries
    
    * src/xterm.c (x_any_window_to_frame): Handle xwidget views.
    (handle_one_xevent): Always increment values array when handling
    motion events.
---
 src/xterm.c | 31 ++++++++++++++++---------------
 1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/src/xterm.c b/src/xterm.c
index bd8d5f892f..57e06f6c7e 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -5681,6 +5681,13 @@ x_any_window_to_frame (struct x_display_info *dpyinfo, 
int wdesc)
   if (wdesc == None)
     return NULL;
 
+#ifdef HAVE_XWIDGETS
+  struct xwidget_view *xv = xwidget_view_from_window (wdesc);
+
+  if (xv)
+    return xv->frame;
+#endif
+
   FOR_EACH_FRAME (tail, frame)
     {
       if (found)
@@ -10997,19 +11004,21 @@ handle_one_xevent (struct x_display_info *dpyinfo,
                         scroll wheel movement is reported on XInput 2.  */
                      delta = x_get_scroll_valuator_delta (dpyinfo, 
xev->deviceid,
                                                           i, *values, &val);
+                     values++;
 
                      if (delta != DBL_MAX)
                        {
+                         if (!f)
+                           {
+                             f = x_any_window_to_frame (dpyinfo, xev->event);
+
+                             if (!f)
+                               goto XI_OTHER;
+                           }
+
 #ifdef HAVE_XWIDGETS
                          if (xv)
                            {
-                             /* FIXME: figure out what in GTK is
-                                causing interval values to jump by
-                                >100 at the end of a touch sequence
-                                when an xwidget gets a scroll event
-                                where is_stop is TRUE.  */
-                             if (fabs (delta) > 100)
-                               continue;
                              if (val->horizontal)
                                xv_total_x += delta;
                              else
@@ -11019,13 +11028,6 @@ handle_one_xevent (struct x_display_info *dpyinfo,
                              continue;
                            }
 #endif
-                         if (!f)
-                           {
-                             f = x_any_window_to_frame (dpyinfo, xev->event);
-
-                             if (!f)
-                               goto XI_OTHER;
-                           }
 
                          found_valuator = true;
 
@@ -11107,7 +11109,6 @@ handle_one_xevent (struct x_display_info *dpyinfo,
 
                          val->emacs_value = 0;
                        }
-                     values++;
                    }
 
                  inev.ie.kind = NO_EVENT;