[gtk+/gestures: 50/202] scrolledwindow: Ensure the dragging sequence gets denied if more touches come in

[Carlos Garnacho <carlosg src gnome org>]

commit 6c787165312ac65488db9e68c0d32fdd5cdb53ea
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Mar 26 14:06:09 2014 +0100

    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.

 gtk/gtkscrolledwindow.c |   20 +++++++++++---------
 1 files changed, 11 insertions(+), 9 deletions(-)
---
diff --git a/gtk/gtkscrolledwindow.c b/gtk/gtkscrolledwindow.c
index 4597a44..8e4015c 100644
--- 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;
 }