[gnome-photos/gnome-3-22] preview-nav-buttons: Fix the logic to avoid long presses

[Debarshi Ray <debarshir src gnome org>]

commit 3229f7b09762a4cb1245af412416a7c30740b492
Author: Debarshi Ray <debarshir gnome org>
Date:   Sun Nov 27 13:24:11 2016 +0100

    preview-nav-buttons: Fix the logic to avoid long presses
    
    GtkGestureMultiPress::released is emitted, and it is meant to be, even
    after we denied all the sequences in GtkGestureLongPress::pressed.
    Therefore, we were toggling the overlay even on a long press.
    
    We are supposed to check the state of the sequence ourselves, and to
    do that we need access to the GdkEventSequence object. Hence, we now
    connect to GtkGesture::end instead of GtkGestureMultiPress::released.

 src/photos-preview-nav-buttons.c |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/src/photos-preview-nav-buttons.c b/src/photos-preview-nav-buttons.c
index 28c9751..aaf61ba 100644
--- a/src/photos-preview-nav-buttons.c
+++ b/src/photos-preview-nav-buttons.c
@@ -281,8 +281,14 @@ photos_preview_nav_buttons_long_press_pressed (PhotosPreviewNavButtons *self)
 
 
 static void
-photos_preview_nav_buttons_multi_press_released (PhotosPreviewNavButtons *self)
+photos_preview_nav_buttons_multi_press_end (PhotosPreviewNavButtons *self, GdkEventSequence *sequence)
 {
+  GtkEventSequenceState state;
+
+  state = gtk_gesture_get_sequence_state (self->tap_gesture, sequence);
+  if (state == GTK_EVENT_SEQUENCE_DENIED)
+    return;
+
   gtk_gesture_set_state (GTK_GESTURE (self->tap_gesture), GTK_EVENT_SEQUENCE_CLAIMED);
   self->visible_internal = !self->visible_internal;
   photos_preview_nav_buttons_unqueue_auto_hide (self);
@@ -467,8 +473,8 @@ photos_preview_nav_buttons_constructed (GObject *object)
   gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (self->tap_gesture), TRUE);
   gtk_gesture_group (self->long_press_gesture, self->tap_gesture);
   g_signal_connect_swapped (self->tap_gesture,
-                            "released",
-                            G_CALLBACK (photos_preview_nav_buttons_multi_press_released),
+                            "end",
+                            G_CALLBACK (photos_preview_nav_buttons_multi_press_end),
                             self);
 
   /* We will not need them any more */