static gboolean
gpm_kbd_backlight_set (GpmKbdBacklight *backlight,
guint percentage)
{
gint scale;
guint goal;
g_return_val_if_fail (GPM_IS_KBD_BACKLIGHT (backlight), FALSE);
/* if we're setting the same we are, don't bother */
//g_return_val_if_fail (backlight->priv->brightness_percent != percentage, FALSE);
goal = gpm_discrete_from_percent (percentage, backlight->priv->max_brightness);
scale = percentage > backlight->priv->brightness_percent ? 1 : -1;
/* step loop down by 1 for a dimming effect */
while (backlight->priv->brightness != goal) {
backlight->priv->brightness += scale;
backlight->priv->brightness_percent = gpm_discrete_to_percent (backlight->priv->brightness, backlight->priv->max_brightness);
g_dbus_proxy_call (backlight->priv->upower_proxy,
"SetBrightness",
g_variant_new ("(i)", (gint) backlight->priv->brightness),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
NULL,
NULL);
}
egg_debug("Set brightness to %i", backlight->priv->brightness);
return TRUE;
}
/**
* gpm_kbd_backlight_get_brightness:
* @backlight:
* @brightness:
* @error:
*
* Return value:
*/
gboolean
gpm_kbd_backlight_get_brightness (GpmKbdBacklight *backlight,
guint *brightness,
GError **error)
{
g_return_val_if_fail (backlight != NULL, FALSE);
g_return_val_if_fail (GPM_IS_KBD_BACKLIGHT (backlight), FALSE);
g_return_val_if_fail (brightness != NULL, FALSE);
if (backlight->priv->can_dim == FALSE) {
g_set_error_literal (error, gpm_kbd_backlight_error_quark (),
GPM_KBD_BACKLIGHT_ERROR_HARDWARE_NOT_PRESENT,
"Dim capable hardware not present");
return FALSE;
}
*brightness = backlight->priv->brightness_percent;
return TRUE;
}