[clutter-tutorial] Fix warnings, mostly by using G_GNUC_UNUSED.

[Murray Cumming <murrayc src gnome org>]

commit 521f639aac176b90d98764e28cbf25d878e1f61f
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Aug 2 17:13:24 2010 +0200

    Fix warnings, mostly by using G_GNUC_UNUSED.
    
    * examples/animation/main.c (on_alpha):
    * examples/behaviour/main.c (on_alpha):
    * examples/custom_container/examplebox.c
    (example_box_get_preferred_height), (example_box_allocate):
    * examples/full_example/main.c (on_foreach_clear_list_items),
    (on_timeline_moveup_completed), (on_timeline_rotation_completed),
    (on_texture_button_press):
    * examples/score/main.c (on_timeline_rotation_new_frame),
    (on_timeline_move_new_frame):
    * examples/scrolling/main.c (on_stage_button_press):
    * examples/scrolling/scrollingcontainer.c
    (example_scrolling_container_allocate):
    * examples/stage/main.c (on_stage_button_press):
    * examples/timeline/main.c (on_timeline_new_frame),
    (on_timeline_marker_reached): Add G_GNUC_UNUSED
    * examples/gtk_embed/main.c (on_button_clicked): : Add G_GNUC_UNUSED.
    (on_stage_button_press): Use float instead of int with
    clutter_event_get_coords().

 ChangeLog                               |   23 +++++++++++++++++++++++
 examples/animation/main.c               |    2 +-
 examples/behaviour/main.c               |    2 +-
 examples/custom_container/examplebox.c  |    4 ++--
 examples/full_example/main.c            |    8 ++++----
 examples/gtk_embed/main.c               |   10 +++++-----
 examples/score/main.c                   |    8 ++++----
 examples/scrolling/main.c               |    2 +-
 examples/scrolling/scrollingcontainer.c |    2 +-
 examples/stage/main.c                   |    2 +-
 examples/timeline/main.c                |    8 ++++----
 11 files changed, 47 insertions(+), 24 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index c390e34..1840cee 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,26 @@
+2010-08-02  Murray Cumming  <murrayc murrayc com>
+
+	Fix warnings, mostly by using G_GNUC_UNUSED.
+
+	* examples/animation/main.c (on_alpha):
+	* examples/behaviour/main.c (on_alpha):
+	* examples/custom_container/examplebox.c
+	(example_box_get_preferred_height), (example_box_allocate):
+	* examples/full_example/main.c (on_foreach_clear_list_items),
+	(on_timeline_moveup_completed), (on_timeline_rotation_completed),
+	(on_texture_button_press):
+	* examples/score/main.c (on_timeline_rotation_new_frame),
+	(on_timeline_move_new_frame):
+	* examples/scrolling/main.c (on_stage_button_press):
+	* examples/scrolling/scrollingcontainer.c
+	(example_scrolling_container_allocate):
+	* examples/stage/main.c (on_stage_button_press):
+	* examples/timeline/main.c (on_timeline_new_frame),
+	(on_timeline_marker_reached): Add G_GNUC_UNUSED
+	* examples/gtk_embed/main.c (on_button_clicked): : Add G_GNUC_UNUSED.
+	(on_stage_button_press): Use float instead of int with 
+	clutter_event_get_coords().
+
 2010-06-14  Murray Cumming  <murrayc murrayc com>
 
 	Animation example: Don't unref the animation before even running main loop.
diff --git a/examples/animation/main.c b/examples/animation/main.c
index b44a183..76c1168 100644
--- a/examples/animation/main.c
+++ b/examples/animation/main.c
@@ -25,7 +25,7 @@ ClutterActor *rect = NULL;
  *
  */
 gdouble
-on_alpha (ClutterAlpha *alpha, gpointer data)
+on_alpha (ClutterAlpha *alpha, gpointer data G_GNUC_UNUSED)
 {
   /* Get the position in the timeline,
    *  so we can base our value upon it:
diff --git a/examples/behaviour/main.c b/examples/behaviour/main.c
index 6b770d8..960e7fe 100644
--- a/examples/behaviour/main.c
+++ b/examples/behaviour/main.c
@@ -24,7 +24,7 @@ ClutterActor *rect = NULL;
  * clutter_timeline_new().
  */
 gdouble
-on_alpha (ClutterAlpha *alpha, gpointer data)
+on_alpha (ClutterAlpha *alpha, gpointer data G_GNUC_UNUSED)
 {
   /* Get the position in the timeline, 
    *  so we can base our value upon it:
diff --git a/examples/custom_container/examplebox.c b/examples/custom_container/examplebox.c
index 83b470c..c07fd44 100644
--- a/examples/custom_container/examplebox.c
+++ b/examples/custom_container/examplebox.c
@@ -231,7 +231,7 @@ example_box_get_preferred_width (ClutterActor *actor,
 /* An implementation for the ClutterActor::get_preferred_height() vfunc: */
 static void
 example_box_get_preferred_height (ClutterActor *actor,
-                                  float for_width,
+                                  float for_width G_GNUC_UNUSED,
                                   float *min_height_p,
                                   float *natural_height_p)
 {
@@ -290,7 +290,7 @@ example_box_allocate (ClutterActor          *actor,
       /* Calculate the position and size that the child may actually have: */
 
       /* Position the child just after the previous child, horizontally: */
-      ClutterActorBox child_box = { 0, };
+      ClutterActorBox child_box = { 0, 0, 0, 0};
       child_box.x1 = child_x;
       child_box.x2 = child_x + child_width;
       child_x = child_box.x2;
diff --git a/examples/full_example/main.c b/examples/full_example/main.c
index a0ca0ca..5500037 100644
--- a/examples/full_example/main.c
+++ b/examples/full_example/main.c
@@ -53,7 +53,7 @@ Item* item_at_front = NULL;
 
 GSList *list_items = 0;
 
-void on_foreach_clear_list_items(gpointer data, gpointer user_data)
+void on_foreach_clear_list_items(gpointer data, gpointer user_data G_GNUC_UNUSED)
 {
   Item* item = (Item*)data;
 
@@ -183,7 +183,7 @@ gdouble angle_in_360(gdouble angle)
 /* This signal handler is called when the item has finished 
  * moving up and increasing in size.
  */
-void on_timeline_moveup_completed(ClutterTimeline* timeline, gpointer user_data)
+void on_timeline_moveup_completed(ClutterTimeline* timeline G_GNUC_UNUSED, gpointer user_data G_GNUC_UNUSED)
 {
   /* Unref this timeline because we have now finished with it: */
   g_object_unref (timeline_moveup);
@@ -202,7 +202,7 @@ void on_timeline_moveup_completed(ClutterTimeline* timeline, gpointer user_data)
 /* This signal handler is called when the items have completely 
  * rotated around the ellipse.
  */
-void on_timeline_rotation_completed(ClutterTimeline* timeline, gpointer user_data)
+void on_timeline_rotation_completed(ClutterTimeline* timeline G_GNUC_UNUSED, gpointer user_data G_GNUC_UNUSED)
 {
   /* All the items have now been rotated so that the clicked item is at the
    * front.  Now we transform just this one item gradually some more, and
@@ -347,7 +347,7 @@ void rotate_all_until_item_is_at_front(Item *item)
 }
 
 static gboolean
-on_texture_button_press (ClutterActor *actor, ClutterEvent *event, gpointer user_data)
+on_texture_button_press (ClutterActor *actor G_GNUC_UNUSED, ClutterEvent *event G_GNUC_UNUSED, gpointer user_data G_GNUC_UNUSED)
 {
   /* Ignore the events if the timeline_rotation is running (meaning, if the objects are moving),
    * to simplify things:
diff --git a/examples/gtk_embed/main.c b/examples/gtk_embed/main.c
index 96e27ad..a128312 100644
--- a/examples/gtk_embed/main.c
+++ b/examples/gtk_embed/main.c
@@ -22,7 +22,7 @@
 ClutterActor *stage = NULL;
 
 static gboolean
-on_button_clicked (GtkButton *button, gpointer user_data)
+on_button_clicked (GtkButton *button G_GNUC_UNUSED, gpointer user_data G_GNUC_UNUSED)
 {
   static gboolean already_changed = FALSE;
   if(already_changed)
@@ -42,13 +42,13 @@ on_button_clicked (GtkButton *button, gpointer user_data)
 }
 
 static gboolean
-on_stage_button_press (ClutterStage *stage, ClutterEvent *event, gpointer user_data)
+on_stage_button_press (ClutterStage *stage G_GNUC_UNUSED, ClutterEvent *event, gpointer user_data G_GNUC_UNUSED)
 {
-  gint x = 0;
-  gint y = 0;
+  gfloat x = 0;
+  gfloat y = 0;
   clutter_event_get_coords (event, &x, &y);
 
-  g_print ("Stage clicked at (%d, %d)\n", x, y);
+  g_print ("Stage clicked at (%f, %f)\n", x, y);
 
   return TRUE; /* Stop further handling of this event. */
 }
diff --git a/examples/score/main.c b/examples/score/main.c
index 61d06ed..89a9e18 100644
--- a/examples/score/main.c
+++ b/examples/score/main.c
@@ -24,8 +24,8 @@ gint color_change_count = 0;
 
 /* Rotate the rectangle and alternate its color. */
 void
-on_timeline_rotation_new_frame (ClutterTimeline *timeline, 
-  gint frame_num, gpointer data)
+on_timeline_rotation_new_frame (ClutterTimeline *timeline G_GNUC_UNUSED, 
+  gint frame_num G_GNUC_UNUSED, gpointer data G_GNUC_UNUSED)
 {
   rotation_angle += 1;
   if(rotation_angle >= 360)
@@ -56,8 +56,8 @@ on_timeline_rotation_new_frame (ClutterTimeline *timeline,
 
 /* Move the rectangle. */
 void
-on_timeline_move_new_frame (ClutterTimeline *timeline, 
-  gint frame_num, gpointer data)
+on_timeline_move_new_frame (ClutterTimeline *timeline G_GNUC_UNUSED, 
+  gint frame_num G_GNUC_UNUSED, gpointer data G_GNUC_UNUSED)
 {
   gint x_position = clutter_actor_get_x (rect);
 
diff --git a/examples/scrolling/main.c b/examples/scrolling/main.c
index cb3bc49..2d8a660 100644
--- a/examples/scrolling/main.c
+++ b/examples/scrolling/main.c
@@ -22,7 +22,7 @@ ClutterActor *scrolling = NULL;
 
 
 static gboolean
-on_stage_button_press (ClutterStage *stage, ClutterEvent *event, gpointer data)
+on_stage_button_press (ClutterStage *stage G_GNUC_UNUSED, ClutterEvent *event G_GNUC_UNUSED, gpointer data G_GNUC_UNUSED)
 {
   printf ("Scrolling\n");
 
diff --git a/examples/scrolling/scrollingcontainer.c b/examples/scrolling/scrollingcontainer.c
index a5f9ccb..85f163d 100644
--- a/examples/scrolling/scrollingcontainer.c
+++ b/examples/scrolling/scrollingcontainer.c
@@ -175,7 +175,7 @@ example_scrolling_container_allocate (ClutterActor          *actor,
     height = 0;
 
   /* Arrange the group: */
-  ClutterActorBox child_box = { 0, };
+  ClutterActorBox child_box = {0, 0, 0, 0};
   child_box.x1 = 0;
   child_box.x2 = width;
 
diff --git a/examples/stage/main.c b/examples/stage/main.c
index f37a764..bd34ae9 100644
--- a/examples/stage/main.c
+++ b/examples/stage/main.c
@@ -18,7 +18,7 @@
 #include <stdlib.h>
 
 static gboolean
-on_stage_button_press (ClutterStage *stage, ClutterEvent *event, gpointer data)
+on_stage_button_press (ClutterStage *stage G_GNUC_UNUSED, ClutterEvent *event, gpointer data G_GNUC_UNUSED)
 {
   float x = 0;
   float y = 0;
diff --git a/examples/timeline/main.c b/examples/timeline/main.c
index 2b8b330..3193582 100644
--- a/examples/timeline/main.c
+++ b/examples/timeline/main.c
@@ -23,8 +23,8 @@ gint rotation_angle = 0;
 gint color_change_count = 0;
 
 void
-on_timeline_new_frame (ClutterTimeline *timeline, 
-  gint frame_num, gpointer data)
+on_timeline_new_frame (ClutterTimeline *timeline G_GNUC_UNUSED, 
+  gint frame_num G_GNUC_UNUSED, gpointer data G_GNUC_UNUSED)
 {
   rotation_angle += 1;
   if(rotation_angle >= 360)
@@ -54,10 +54,10 @@ on_timeline_new_frame (ClutterTimeline *timeline,
 }
 
 void
-on_timeline_marker_reached (ClutterTimeline* timeline,
+on_timeline_marker_reached (ClutterTimeline* timeline G_GNUC_UNUSED,
                             gchar*           marker_name,
                             gint             frame_num,
-                            gpointer         user_data)
+                            gpointer         user_data G_GNUC_UNUSED)
 {
   printf ("Reached marker %s at frame %d.\n",
     marker_name, frame_num);