[gtk/wip/exalm/scroll-hold] eventcontrollerscroll: Always propagate hold events

[Alexander Mikhaylenko <alexm src gnome org>]

commit 29e2ce3bbe31e0a483887b7d80270c432fd8a1bc
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon Mar 28 01:05:23 2022 +0400

    eventcontrollerscroll: Always propagate hold events
    
    Otherwise a stray scroll controller may prevent others from getting hold
    events, even if it always propagates scroll events and does absolutely
    nothing.

 gtk/gtkeventcontrollerscroll.c | 25 ++++++++++---------------
 1 file changed, 10 insertions(+), 15 deletions(-)
---
diff --git a/gtk/gtkeventcontrollerscroll.c b/gtk/gtkeventcontrollerscroll.c
index 500993bb8f..f40826cf7b 100644
--- a/gtk/gtkeventcontrollerscroll.c
+++ b/gtk/gtkeventcontrollerscroll.c
@@ -241,28 +241,26 @@ gtk_event_controller_scroll_get_property (GObject    *object,
     }
 }
 
-static gboolean
+static void
 gtk_event_controller_scroll_begin (GtkEventController *controller)
 {
   GtkEventControllerScroll *scroll = GTK_EVENT_CONTROLLER_SCROLL (controller);
 
   if (scroll->active)
-    return FALSE;
+    return;
 
   g_signal_emit (controller, signals[SCROLL_BEGIN], 0);
   scroll_history_reset (scroll);
   scroll->active = TRUE;
-
-  return TRUE;
 }
 
-static gboolean
+static void
 gtk_event_controller_scroll_end (GtkEventController *controller)
 {
   GtkEventControllerScroll *scroll = GTK_EVENT_CONTROLLER_SCROLL (controller);
 
   if (!scroll->active)
-    return FALSE;
+    return;
 
   g_signal_emit (controller, signals[SCROLL_END], 0);
   scroll->active = FALSE;
@@ -274,8 +272,6 @@ gtk_event_controller_scroll_end (GtkEventController *controller)
       scroll_history_finish (scroll, &vel_x, &vel_y);
       g_signal_emit (controller, signals[DECELERATE], 0, vel_x, vel_y);
     }
-
-  return TRUE;
 }
 
 static gboolean
@@ -298,30 +294,29 @@ gtk_event_controller_scroll_handle_hold_event (GtkEventController *controller,
                                                GdkEvent           *event)
 {
   GtkEventControllerScroll *scroll = GTK_EVENT_CONTROLLER_SCROLL (controller);
-  gboolean handled = GDK_EVENT_PROPAGATE;
   GdkTouchpadGesturePhase phase;
   guint n_fingers = 0;
 
   if (gdk_event_get_event_type (event) != GDK_TOUCHPAD_HOLD)
-    return handled;
+    return GDK_EVENT_PROPAGATE;
 
   n_fingers = gdk_touchpad_event_get_n_fingers (event);
   if (n_fingers != 1 && n_fingers != 2)
-    return handled;
+    return GDK_EVENT_PROPAGATE;
 
   if (scroll->hold_timeout_id != 0)
-    return handled;
+    return GDK_EVENT_PROPAGATE;
 
   phase = gdk_touchpad_event_get_gesture_phase (event);
 
   switch (phase)
     {
     case GDK_TOUCHPAD_GESTURE_PHASE_BEGIN:
-      handled = gtk_event_controller_scroll_begin (controller);
+      gtk_event_controller_scroll_begin (controller);
       break;
 
     case GDK_TOUCHPAD_GESTURE_PHASE_END:
-      handled = gtk_event_controller_scroll_end (controller);
+      gtk_event_controller_scroll_end (controller);
       break;
 
     case GDK_TOUCHPAD_GESTURE_PHASE_CANCEL:
@@ -339,7 +334,7 @@ gtk_event_controller_scroll_handle_hold_event (GtkEventController *controller,
       break;
     }
 
-  return handled;
+  return GDK_EVENT_PROPAGATE;
 }
 
 static gboolean