[gnome-control-center] mouse: Update from gnome-settings-daemon

[Bastien Nocera <hadess src gnome org>]

commit daa8b098a434809baaf92441b43d09c750953e15
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Aug 20 15:53:55 2012 +0100

    mouse: Update from gnome-settings-daemon

 panels/mouse/gsd-input-helper.c |   37 +++++++++++++++++++++++++++++++------
 panels/mouse/gsd-input-helper.h |    2 ++
 2 files changed, 33 insertions(+), 6 deletions(-)
---
diff --git a/panels/mouse/gsd-input-helper.c b/panels/mouse/gsd-input-helper.c
index cf9e83d..c15e135 100644
--- a/panels/mouse/gsd-input-helper.c
+++ b/panels/mouse/gsd-input-helper.c
@@ -83,6 +83,8 @@ device_set_property (XDevice        *xdevice,
                                xdevice, prop, realtype, realformat,
                                PropModeReplace, data, nitems);
 
+        XFree (data);
+
         if (gdk_error_trap_pop ()) {
                 g_warning ("Error in setting \"%s\" for \"%s\"", property->name, device_name);
                 return FALSE;
@@ -129,7 +131,14 @@ supports_xinput2_devices (int *opcode)
 
         if (XIQueryVersion (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), &major, &minor) != Success) {
                 gdk_error_trap_pop_ignored ();
-                return FALSE;
+                /* try for 2.2, maybe gtk has already announced 2.2 support */
+                gdk_error_trap_push ();
+                major = 2;
+                minor = 2;
+                if (XIQueryVersion (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), &major, &minor) != Success) {
+                    gdk_error_trap_pop_ignored ();
+                    return FALSE;
+                }
         }
         gdk_error_trap_pop_ignored ();
 
@@ -179,6 +188,12 @@ device_info_is_touchscreen (XDeviceInfo *device_info)
         return (device_info->type == XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), XI_TOUCHSCREEN, False));
 }
 
+gboolean
+device_info_is_mouse (XDeviceInfo *device_info)
+{
+        return (device_info->type == XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), XI_MOUSE, False));
+}
+
 static gboolean
 device_type_is_present (InfoIdentifyFunc info_func,
                         DeviceIdentifyFunc device_func)
@@ -241,6 +256,13 @@ touchpad_is_present (void)
                                        device_is_touchpad);
 }
 
+gboolean
+mouse_is_present (void)
+{
+        return device_type_is_present (device_info_is_mouse,
+                                       NULL);
+}
+
 char *
 xdevice_get_device_node (int deviceid)
 {
@@ -328,14 +350,16 @@ xdevice_get_last_tool_id (int  deviceid)
         if (!prop)
                 return -1;
 
+        data = NULL;
+
         gdk_error_trap_push ();
 
-        if (!XIGetProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+        if (XIGetProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
                             deviceid, prop, 0, 1000, False,
                             AnyPropertyType, &act_type, &act_format,
-                            &nitems, &bytes_after, &data) == Success) {
+                            &nitems, &bytes_after, &data) != Success) {
                 gdk_error_trap_pop_ignored ();
-                return -1;
+                goto out;
         }
 
         if (gdk_error_trap_pop ())
@@ -366,10 +390,11 @@ xdevice_get_last_tool_id (int  deviceid)
 	/* That means that no tool was set down yet */
 	if (id == STYLUS_DEVICE_ID ||
 	    id == ERASER_DEVICE_ID)
-		return 0x0;
+		id = 0x0;
 
 out:
-        XFree (data);
+        if (data != NULL)
+                XFree (data);
         return id;
 }
 
diff --git a/panels/mouse/gsd-input-helper.h b/panels/mouse/gsd-input-helper.h
index dfde51f..fb898b0 100644
--- a/panels/mouse/gsd-input-helper.h
+++ b/panels/mouse/gsd-input-helper.h
@@ -61,9 +61,11 @@ gboolean  device_is_touchpad       (XDevice                *xdevice);
 
 gboolean  device_info_is_touchpad    (XDeviceInfo         *device_info);
 gboolean  device_info_is_touchscreen (XDeviceInfo         *device_info);
+gboolean  device_info_is_mouse       (XDeviceInfo         *device_info);
 
 gboolean  touchpad_is_present     (void);
 gboolean  touchscreen_is_present  (void);
+gboolean  mouse_is_present        (void);
 
 gboolean  device_set_property     (XDevice                *xdevice,
                                    const char             *device_name,