i9300: advanced setting: add content adaptive backlight control

Change-Id: I8979a7434265d76172d6d0180b37abaef61d8aaa

1 files changed, 58 insertions, 0 deletions

diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/CABC.java b/DeviceSettings/src/com/cyanogenmod/settings/device/CABC.java
new file mode 100644
index 0000000..af247d8
--- /dev/null
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/CABC.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2013 The CyanogenMod Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.cyanogenmod.settings.device;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.CheckBoxPreference;
+import android.preference.Preference;
+import android.preference.Preference.OnPreferenceChangeListener;
+import android.preference.PreferenceManager;
+import android.util.AttributeSet;
+
+public class CABC extends CheckBoxPreference implements OnPreferenceChangeListener {
+
+    public CABC(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        this.setOnPreferenceChangeListener(this);
+    }
+
+    private static final String FILE = "/sys/class/lcd/panel/power_reduce";
+
+    public static boolean isSupported() {
+        return Utils.fileExists(FILE);
+    }
+
+    /**
+     * Restore cabc setting from SharedPreferences. (Write to kernel.)
+     * @param context       The context to read the SharedPreferences from
+     */
+    public static void restore(Context context) {
+        if (!isSupported()) {
+            return;
+        }
+
+        SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
+        Utils.writeValue(FILE, sharedPrefs.getBoolean(DeviceSettings.KEY_CABC, true) ? "1" : "0");
+    }
+
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        Utils.writeValue(FILE, (Boolean)newValue ? "1" : "0");
+        return true;
+    }
+
+}