[Xfce4-commits] [xfce/xfce4-power-manager] 08/17: Implement brightness switch handling in common/xfpm-brightness

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hjudt pushed a commit to branch master
in repository xfce/xfce4-power-manager.

commit b6cd657502fe307d3150a7c0f453164541ae49ee
Author: Harald Judt <h.judt at gmx.at>
Date:   Mon Jul 21 18:12:34 2014 +0200

    Implement brightness switch handling in common/xfpm-brightness
    
    This adds the necessary utility functions to read and write the kernel
    brightness switch setting.
---
 common/xfpm-brightness.c |   71 +++++++++++++++++++++++++++++++++++++++++++++-
 common/xfpm-brightness.h |    6 ++++
 2 files changed, 76 insertions(+), 1 deletion(-)

diff --git a/common/xfpm-brightness.c b/common/xfpm-brightness.c
index 2b94777..54d2d05 100644
--- a/common/xfpm-brightness.c
+++ b/common/xfpm-brightness.c
@@ -333,7 +333,12 @@ xfpm_brightness_helper_get_value (const gchar *argument)
     if ( exit_status != 0 )
 	goto out;
 
-    value = atoi (stdout_data);
+    if ( stdout_data[0] == 'N' )
+        value = 0;
+    else if ( stdout_data[0] == 'Y' )
+        value = 1;
+    else
+        value = atoi (stdout_data);
 
 out:
     g_free (command);
@@ -406,6 +411,46 @@ out:
 }
 
 static gboolean
+xfpm_brightness_helper_get_switch (XfpmBrightness *brg, gint *brightness_switch)
+{
+    gint ret;
+
+    ret = xfpm_brightness_helper_get_value ("get-brightness-switch");
+
+    if ( ret >= 0 )
+    {
+	*brightness_switch = ret;
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+static gboolean
+xfpm_brightness_helper_set_switch (XfpmBrightness *brg, gint brightness_switch)
+{
+    gboolean ret;
+    GError *error = NULL;
+    gint exit_status = 0;
+    gchar *command = NULL;
+
+    command = g_strdup_printf ("pkexec " SBINDIR "/xfpm-power-backlight-helper --set-brightness-switch %i", brightness_switch);
+    ret = g_spawn_command_line_sync (command, NULL, NULL, &exit_status, &error);
+    if ( !ret )
+    {
+	g_warning ("xfpm_brightness_helper_set_switch: failed to set value: %s", error->message);
+	g_error_free (error);
+	goto out;
+    }
+    g_debug ("executed %s; retval: %i", command, exit_status);
+    ret = (exit_status == 0);
+
+out:
+    g_free (command);
+    return ret;
+}
+
+static gboolean
 xfpm_brightness_helper_up (XfpmBrightness *brightness, gint32 *new_level)
 {
     gint32 hw_level;
@@ -659,3 +704,27 @@ gboolean xfpm_brightness_dim_down (XfpmBrightness *brightness)
     
     return ret;
 }
+
+gboolean xfpm_brightness_get_switch (XfpmBrightness *brightness, gint *brightness_switch)
+{
+    gboolean ret = FALSE;
+
+#ifdef ENABLE_POLKIT
+    if ( brightness->priv->helper_has_hw )
+    ret = xfpm_brightness_helper_get_switch (brightness, brightness_switch);
+#endif
+
+    return ret;
+}
+
+gboolean xfpm_brightness_set_switch (XfpmBrightness *brightness, gint brightness_switch)
+{
+    gboolean ret = FALSE;
+
+#ifdef ENABLE_POLKIT
+    if ( brightness->priv->helper_has_hw )
+	ret = xfpm_brightness_helper_set_switch (brightness, brightness_switch);
+#endif
+
+    return ret;
+}
diff --git a/common/xfpm-brightness.h b/common/xfpm-brightness.h
index 9cb7a02..990927d 100644
--- a/common/xfpm-brightness.h
+++ b/common/xfpm-brightness.h
@@ -68,6 +68,12 @@ gboolean			xfpm_brightness_set_level	(XfpmBrightness *brightness,
 
 gboolean			xfpm_brightness_dim_down	(XfpmBrightness *brightness);
 
+gboolean			xfpm_brightness_get_switch	(XfpmBrightness *brightness,
+												 gint *brightness_switch);
+
+gboolean			xfpm_brightness_set_switch	(XfpmBrightness *brightness,
+												 gint brightness_switch);
+
 G_END_DECLS
 
 #endif /* __XFPM_BRIGHTNESS_H */

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