[mutter] clutter/stage: Make set_viewport() a static method

[Jonas Ådahl <jadahl src gnome org>]

commit 38104755a232f6957575be99905b71c35a0b8787
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Tue Jun 2 15:25:34 2020 +0200

    clutter/stage: Make set_viewport() a static method
    
    Since clutter_stage_set_viewport() is only used inside clutter-stage.c
    anyway, we can make it a static method. Also we can remove the x and y
    arguments from it since they're always set to 0 anyway.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1247

 clutter/clutter/clutter-stage-private.h |  5 -----
 clutter/clutter/clutter-stage.c         | 28 ++++++++++++----------------
 2 files changed, 12 insertions(+), 21 deletions(-)
---
diff --git a/clutter/clutter/clutter-stage-private.h b/clutter/clutter/clutter-stage-private.h
index 2c5a2a50ee..9f018ab84d 100644
--- a/clutter/clutter/clutter-stage-private.h
+++ b/clutter/clutter/clutter-stage-private.h
@@ -50,11 +50,6 @@ ClutterStageWindow *_clutter_stage_get_window            (ClutterStage
 void                _clutter_stage_get_projection_matrix (ClutterStage          *stage,
                                                           CoglMatrix            *projection);
 void                _clutter_stage_dirty_projection      (ClutterStage          *stage);
-void                _clutter_stage_set_viewport          (ClutterStage          *stage,
-                                                          float                  x,
-                                                          float                  y,
-                                                          float                  width,
-                                                          float                  height);
 void                _clutter_stage_get_viewport          (ClutterStage          *stage,
                                                           float                 *x,
                                                           float                 *y,
diff --git a/clutter/clutter/clutter-stage.c b/clutter/clutter/clutter-stage.c
index 686152329c..4ed5809453 100644
--- a/clutter/clutter/clutter-stage.c
+++ b/clutter/clutter/clutter-stage.c
@@ -189,6 +189,9 @@ static void capture_view_into (ClutterStage          *stage,
                                uint8_t               *data,
                                int                    stride);
 static void clutter_stage_update_view_perspective (ClutterStage *stage);
+static void clutter_stage_set_viewport (ClutterStage *stage,
+                                        float         width,
+                                        float         height);
 
 static void clutter_container_iface_init (ClutterContainerIface *iface);
 
@@ -718,10 +721,7 @@ clutter_stage_allocate (ClutterActor           *self,
   clutter_actor_get_allocation_box (self, &alloc);
   clutter_actor_box_get_size (&alloc, &new_width, &new_height);
 
-  _clutter_stage_set_viewport (CLUTTER_STAGE (self),
-                               0, 0,
-                               new_width,
-                               new_height);
+  clutter_stage_set_viewport (CLUTTER_STAGE (self), new_width, new_height);
 }
 
 typedef struct _Vector4
@@ -2239,10 +2239,7 @@ clutter_stage_init (ClutterStage *self)
   g_signal_connect (self, "notify::min-height",
                     G_CALLBACK (clutter_stage_notify_min_size), NULL);
 
-  _clutter_stage_set_viewport (self,
-                               0, 0,
-                               geom.width,
-                               geom.height);
+  clutter_stage_set_viewport (self, geom.width, geom.height);
 
   priv->paint_volume_stack =
     g_array_new (FALSE, FALSE, sizeof (ClutterPaintVolume));
@@ -2429,8 +2426,6 @@ _clutter_stage_dirty_projection (ClutterStage *stage)
 /*
  * clutter_stage_set_viewport:
  * @stage: A #ClutterStage
- * @x: The X postition to render the stage at, in window coordinates
- * @y: The Y position to render the stage at, in window coordinates
  * @width: The width to render the stage at, in window coordinates
  * @height: The height to render the stage at, in window coordinates
  *
@@ -2463,19 +2458,20 @@ _clutter_stage_dirty_projection (ClutterStage *stage)
  *
  * Since: 1.6
  */
-void
-_clutter_stage_set_viewport (ClutterStage *stage,
-                             float         x,
-                             float         y,
-                             float         width,
-                             float         height)
+static void
+clutter_stage_set_viewport (ClutterStage *stage,
+                            float         width,
+                            float         height)
 {
   ClutterStagePrivate *priv;
+  float x, y;
 
   g_return_if_fail (CLUTTER_IS_STAGE (stage));
 
   priv = stage->priv;
 
+  x = 0.f;
+  y = 0.f;
   width = roundf (width);
   height = roundf (height);