[mutter] clutter/pan-action: Clean up line lengths

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 84f55d38dd9c27fc2a3f99416e9cf573430a15a9
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Apr 15 11:04:06 2020 +0200

    clutter/pan-action: Clean up line lengths
    
    The file stood out and was hard to read because lines were very long
    compared to the rest of clutter and mutter. Clean that up by cutting
    lines into pieces where appropriate.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1289

 clutter/clutter/clutter-pan-action.c | 49 +++++++++++++++++++++++++-----------
 1 file changed, 35 insertions(+), 14 deletions(-)
---
diff --git a/clutter/clutter/clutter-pan-action.c b/clutter/clutter/clutter-pan-action.c
index 07d819e52b..22fdc2743b 100644
--- a/clutter/clutter/clutter-pan-action.c
+++ b/clutter/clutter/clutter-pan-action.c
@@ -136,7 +136,8 @@ enum
 
 static guint pan_signals[LAST_SIGNAL] = { 0, };
 
-G_DEFINE_TYPE_WITH_PRIVATE (ClutterPanAction, clutter_pan_action, CLUTTER_TYPE_GESTURE_ACTION)
+G_DEFINE_TYPE_WITH_PRIVATE (ClutterPanAction, clutter_pan_action,
+                            CLUTTER_TYPE_GESTURE_ACTION)
 
 static void
 emit_pan (ClutterPanAction *self,
@@ -156,14 +157,18 @@ emit_pan (ClutterPanAction *self,
           gfloat scroll_threshold = G_PI_4/2;
           gfloat drag_angle;
 
-          clutter_gesture_action_get_motion_delta (CLUTTER_GESTURE_ACTION (self), 0, &delta_x, &delta_y);
+          clutter_gesture_action_get_motion_delta (CLUTTER_GESTURE_ACTION (self),
+                                                   0,
+                                                   &delta_x,
+                                                   &delta_y);
 
           if (delta_x != 0.0f)
             drag_angle = atanf (delta_y / delta_x);
           else
             drag_angle = G_PI_2;
 
-          if ((drag_angle > -scroll_threshold) && (drag_angle < scroll_threshold))
+          if ((drag_angle > -scroll_threshold) &&
+              (drag_angle < scroll_threshold))
             priv->pin_state = SCROLL_PINNED_HORIZONTAL;
           else if ((drag_angle > (G_PI_2 - scroll_threshold)) ||
                     (drag_angle < -(G_PI_2 - scroll_threshold)))
@@ -282,7 +287,10 @@ gesture_end (ClutterGestureAction *gesture,
   gfloat tau;
   gint duration;
 
-  clutter_gesture_action_get_release_coords (CLUTTER_GESTURE_ACTION (self), 0, &priv->release_x, 
&priv->release_y);
+  clutter_gesture_action_get_release_coords (CLUTTER_GESTURE_ACTION (self),
+                                             0,
+                                             &priv->release_x,
+                                             &priv->release_y);
 
   if (!priv->should_interpolate)
     {
@@ -293,7 +301,9 @@ gesture_end (ClutterGestureAction *gesture,
   priv->state = PAN_STATE_INTERPOLATING;
 
   clutter_gesture_action_get_motion_delta (gesture, 0, &delta_x, &delta_y);
-  velocity = clutter_gesture_action_get_velocity (gesture, 0, &velocity_x, &velocity_y);
+  velocity = clutter_gesture_action_get_velocity (gesture, 0,
+                                                  &velocity_x,
+                                                  &velocity_y);
 
   /* Exponential timing constant v(t) = v(0) * exp(-t/tau)
    * tau = 1000ms / (frame_per_second * - ln(decay_per_frame))
@@ -304,17 +314,22 @@ gesture_end (ClutterGestureAction *gesture,
   /* See where the decreasing velocity reaches $min_velocity px/ms
    * v(t) = v(0) * exp(-t/tau) = min_velocity
    * t = - tau * ln( min_velocity / |v(0)|) */
-  duration = - tau * logf (min_velocity / (ABS (velocity) * priv->acceleration_factor));
+  duration = - tau * logf (min_velocity / (ABS (velocity) *
+                                           priv->acceleration_factor));
 
   /* Target point: x(t) = v(0) * tau * [1 - exp(-t/tau)] */
-  priv->target_x = velocity_x * priv->acceleration_factor * tau * (1 - exp ((float)-duration / tau));
-  priv->target_y = velocity_y * priv->acceleration_factor * tau * (1 - exp ((float)-duration / tau));
+  priv->target_x = (velocity_x * priv->acceleration_factor * tau *
+                    (1 - exp ((float)-duration / tau)));
+  priv->target_y = (velocity_y * priv->acceleration_factor * tau *
+                    (1 - exp ((float)-duration / tau)));
 
-  if (ABS (velocity) * priv->acceleration_factor > min_velocity && duration > FLOAT_EPSILON)
+  if (ABS (velocity) * priv->acceleration_factor > min_velocity &&
+      duration > FLOAT_EPSILON)
     {
       priv->interpolated_x = priv->interpolated_y = 0.0f;
       priv->deceleration_timeline = clutter_timeline_new (duration);
-      clutter_timeline_set_progress_mode (priv->deceleration_timeline, CLUTTER_EASE_OUT_EXPO);
+      clutter_timeline_set_progress_mode (priv->deceleration_timeline,
+                                          CLUTTER_EASE_OUT_EXPO);
 
       g_signal_connect (priv->deceleration_timeline, "new_frame",
                         G_CALLBACK (on_deceleration_new_frame), self);
@@ -367,7 +382,8 @@ clutter_pan_action_set_property (GObject      *gobject,
       break;
 
     case PROP_ACCELERATION_FACTOR :
-      clutter_pan_action_set_acceleration_factor (self, g_value_get_double (value));
+      clutter_pan_action_set_acceleration_factor (self,
+                                                  g_value_get_double (value));
       break;
 
     default:
@@ -411,9 +427,11 @@ static void
 clutter_pan_action_constructed (GObject *gobject)
 {
   ClutterGestureAction *gesture;
+  ClutterGestureTriggerEdge edge;
 
   gesture = CLUTTER_GESTURE_ACTION (gobject);
-  clutter_gesture_action_set_threshold_trigger_edge (gesture, CLUTTER_GESTURE_TRIGGER_EDGE_AFTER);
+  edge = CLUTTER_GESTURE_TRIGGER_EDGE_AFTER;
+  clutter_gesture_action_set_threshold_trigger_edge (gesture, edge);
 }
 
 static void
@@ -442,7 +460,8 @@ clutter_pan_action_set_actor (ClutterActorMeta *meta,
         g_clear_object (&priv->deceleration_timeline);
     }
 
-  CLUTTER_ACTOR_META_CLASS (clutter_pan_action_parent_class)->set_actor (meta, actor);
+  CLUTTER_ACTOR_META_CLASS (clutter_pan_action_parent_class)->set_actor (meta,
+                                                                         actor);
 }
 
 
@@ -880,7 +899,9 @@ clutter_pan_action_get_constrained_motion_delta (ClutterPanAction *self,
 
   priv = self->priv;
 
-  distance = clutter_pan_action_get_motion_delta (self, point, &delta_x, &delta_y);
+  distance = clutter_pan_action_get_motion_delta (self, point,
+                                                  &delta_x,
+                                                  &delta_y);
 
   switch (priv->pan_axis)
     {