From c1e2658104046d8895134df5b7519db26a491892 Mon Sep 17 00:00:00 2001
From: Elliot Smith <elliot.smith@intel.com>
Date: Thu, 19 Aug 2010 17:17:58 +0100
Subject: [PATCH] cookbook: Added simple pointer motion example

Added a simple pointer motion example which just reports on
the stage and actor-relative coordinates of the pointer
as it moves.
---
 doc/cookbook/examples/Makefile.am             |  6 +-
 doc/cookbook/examples/events-pointer-motion.c | 56 +++++++++++++++++++
 2 files changed, 60 insertions(+), 2 deletions(-)
 create mode 100644 doc/cookbook/examples/events-pointer-motion.c

diff --git a/doc/cookbook/examples/Makefile.am b/doc/cookbook/examples/Makefile.am
index 624ddad94..370b61b5f 100644
--- a/doc/cookbook/examples/Makefile.am
+++ b/doc/cookbook/examples/Makefile.am
@@ -11,8 +11,9 @@ noinst_PROGRAMS = \
 	layouts-stacking \
 	layouts-stacking-diff-sized-actors	\
 	events-mouse-scroll \
-	events-pointer-motion-crossing \
-	events-pointer-motion-scribbler \
+	events-pointer-motion	\
+	events-pointer-motion-crossing	\
+	events-pointer-motion-scribbler	\
 	$(NULL)
 
 INCLUDES = \
@@ -42,6 +43,7 @@ textures_sub_texture_SOURCES               = textures-sub-texture.c
 layouts_stacking_SOURCES                   = layouts-stacking.c
 layouts_stacking_diff_sized_actors_SOURCES = layouts-stacking-diff-sized-actors.c
 events_mouse_scroll_SOURCES                = events-mouse-scroll.c
+events_pointer_motion_SOURCES              = events-pointer-motion.c
 events_pointer_motion_crossing_SOURCES     = events-pointer-motion-crossing.c
 events_pointer_motion_scribbler_SOURCES    = events-pointer-motion-scribbler.c
 
diff --git a/doc/cookbook/examples/events-pointer-motion.c b/doc/cookbook/examples/events-pointer-motion.c
new file mode 100644
index 000000000..02293dcf0
--- /dev/null
+++ b/doc/cookbook/examples/events-pointer-motion.c
@@ -0,0 +1,56 @@
+#include <clutter/clutter.h>
+
+static const ClutterColor stage_color = { 0x33, 0x33, 0x55, 0xff };
+static const ClutterColor rectangle_color = { 0xaa, 0x99, 0x00, 0xff };
+
+static gboolean
+_pointer_moved_cb (ClutterActor *actor,
+                   ClutterEvent *event,
+                   gpointer      user_data)
+{
+  ClutterMotionEvent *motion_event = (ClutterMotionEvent *)event;
+
+  gfloat stage_x = motion_event->x;
+  gfloat stage_y = motion_event->y;
+
+  gfloat actor_x, actor_y;
+  clutter_actor_transform_stage_point (actor,
+                                       stage_x, stage_y,
+                                       &actor_x, &actor_y);
+
+  g_debug ("pointer @ stage x %.0f, y %.0f; actor x %.0f, y %.0f",
+           stage_x, stage_y,
+           actor_x, actor_y);
+  return TRUE;
+}
+
+int
+main (int argc, char *argv[])
+{
+  ClutterActor *stage;
+  ClutterActor *rectangle;
+
+  clutter_init (&argc, &argv);
+
+  stage = clutter_stage_get_default ();
+  clutter_actor_set_size (stage, 400, 400);
+  clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
+
+  rectangle = clutter_rectangle_new_with_color (&rectangle_color);
+  clutter_actor_set_size (rectangle, 300, 300);
+  clutter_actor_set_position (rectangle, 50, 50);
+  clutter_actor_set_reactive (rectangle, TRUE);
+
+  clutter_container_add_actor (CLUTTER_CONTAINER (stage), rectangle);
+
+  g_signal_connect (rectangle,
+                    "motion-event",
+                    G_CALLBACK (_pointer_moved_cb),
+                    NULL);
+
+  clutter_actor_show (stage);
+
+  clutter_main ();
+
+  return 0;
+}