scrolledwindow: Ensure the dragging sequence gets denied if more touches come in

This allows children to receive an emulated press, and handle it together with
the new touch that made the scrolledwindow sequence denied.

diff --git a/gtk/gtkscrolledwindow.c b/gtk/gtkscrolledwindow.c
index 4597a44561f5e2b1575ee5cafcaeb8aef0b683f5..8e4015cad260389e5f43827c1deff526658222b8 100644 (file)
--- a/gtk/gtkscrolledwindow.c
+++ b/gtk/gtkscrolledwindow.c
@@ -656,15 +656,14 @@ scrolled_window_drag_end_cb (GtkScrolledWindow *scrolled_window,
                              GtkGesture        *gesture)
 {
   GtkScrolledWindowPrivate *priv = scrolled_window->priv;
+  GdkEventSequence *current, *last;
 
-  if (!priv->in_drag)
-    {
-      GdkEventSequence *sequence;
+  current = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
+  last = gtk_gesture_get_last_updated_sequence (gesture);
 
-      sequence = gtk_gesture_get_last_updated_sequence (gesture);
-      gtk_widget_set_sequence_state (GTK_WIDGET (scrolled_window),
-                                     sequence, GTK_EVENT_SEQUENCE_DENIED);
-    }
+  if (!priv->in_drag || current != last)
+    gtk_widget_set_sequence_state (GTK_WIDGET (scrolled_window),
+                                   current, GTK_EVENT_SEQUENCE_DENIED);
 }
 
 static void
@@ -716,8 +715,11 @@ scrolled_window_long_press_cancelled_cb (GtkScrolledWindow *scrolled_window,
   sequence = gtk_gesture_get_last_updated_sequence (gesture);
   event = gtk_gesture_get_last_event (gesture, sequence);
 
-  if (event->type != GDK_TOUCH_END &&
-      event->type != GDK_BUTTON_RELEASE)
+  if (event->type == GDK_TOUCH_BEGIN)
+    gtk_widget_set_gesture_state (GTK_WIDGET (scrolled_window), gesture,
+                                  GTK_EVENT_SEQUENCE_DENIED);
+  else if (event->type != GDK_TOUCH_END &&
+           event->type != GDK_BUTTON_RELEASE)
     priv->in_drag = TRUE;
 }