add eeze watch for backlight events

when using "system" backlight mode, ensure that events are processed
as they occur so that the available backlight level is in sync with
the actual backlight level

fix T2255

diff --git a/src/bin/e_backlight.c b/src/bin/e_backlight.c
index f510ad2..89552e3 100644 (file)
--- a/src/bin/e_backlight.c
+++ b/src/bin/e_backlight.c
@@ -253,6 +253,7 @@ _e_backlight_update(void)
    if (bl_sysval)
      {
         sysmode = MODE_SYS;
+        xbl_avail = EINA_FALSE;
         _bl_sys_level_get();
         return;
      }
@@ -338,6 +339,17 @@ _bl_anim(void *data EINA_UNUSED, double pos)
 
 #ifdef HAVE_EEZE
 static void
+_bl_sys_change(const char *device, Eeze_Udev_Event event EINA_UNUSED, void *data EINA_UNUSED, Eeze_Udev_Watch *watch EINA_UNUSED)
+{
+   if (device == bl_sysval)
+     {
+        _bl_sys_level_get();
+        ecore_event_add(E_EVENT_BACKLIGHT_CHANGE, NULL, NULL, NULL);
+     }
+   eina_stringshare_del(device);
+}
+
+static void
 _bl_sys_find(void)
 {
    Eina_List *l, *devs, *pdevs = NULL;
@@ -421,6 +433,7 @@ _bl_sys_find(void)
      }
    /* clear out preferred devs list */
    E_FREE_LIST(pdevs, eina_stringshare_del);
+   eeze_udev_watch_add(EEZE_UDEV_TYPE_BACKLIGHT, EEZE_UDEV_EVENT_CHANGE, _bl_sys_change, NULL);
 }
 
 static void