galaxys2: advanced settings: add content adaptive backlight control

Change-Id: I325d9663d7d1b82a7ebfb112e983a485689b063b

6 files changed, 132 insertions, 50 deletions

diff --git a/DeviceSettings/res/values/strings.xml b/DeviceSettings/res/values/strings.xml
index 5d0a427..6fd764d 100644
--- a/DeviceSettings/res/values/strings.xml
+++ b/DeviceSettings/res/values/strings.xml
@@ -4,8 +4,15 @@
 
     <string name="defaults_button">Reset to default</string>
 
+    <!-- Screen Preference -->
     <string name="category_screen_title">Screen</string>
     <string name="screen_colors_title">Colors</string>
+
+    <!-- Content adaptive backlight control -->
+    <string name="cabc_title_head">CABC</string>
+    <string name="cabc_summary_head">Enable content adaptive backlight control</string>
+
+    <!-- mDNIe -->
     <string name="mdnie_scenario_title_head">Scenario</string>
     <string name="mdnie_scenario_summary_head">Set the mDNIe Scenario</string>
     <string name="mdnie_mode_title_head">Mode</string>
@@ -17,16 +24,19 @@
     <string name="panel_gamma_title_head">Screen Gamma</string>
     <string name="panel_gamma_summary_head">Set screen gamma value</string>
 
+    <!-- Touchscreen tuning -->
     <string name="touchscreen_subcat_title">Touchscreen</string>
     <string name="touchscreen_sensitivity_title_head">Touch sensitivity</string>
     <string name="touchscreen_sensitivity_summary_head">Set touch panel sensitivity</string>
 
+    <!-- Touchkey tuning -->
     <string name="touchkey_subcat_title">Touchkeys</string>
     <string name="touchkey_light_title_head">Enable keys backlight</string>
     <string name="touchkey_light_summary_head">Light up touchkeys when screen is on</string> 
     <string name="touchkey_timeout_title_head">Backlight timeout</string>
     <string name="touchkey_timeout_summary_head">Delay after a keypress before backlight turns off</string>
 
+    <!-- Sensors Preference -->
     <string name="category_sensors_title">Sensors</string>
     <string name="accelerometer_subcat_title">Accelerometer</string>
     <string name="use_accelerometer_calibration_title_head">Use calibration data</string>
@@ -45,10 +55,12 @@
     <string name="vibrator_tuning_summary_head">Adjust the strength of the vibration feedback</string>
     <string name="vibrator_warning">Values higher than %1$d are not recommended</string>
 
+    <!-- Radio Preference -->
     <string name="category_radio_title">Radio</string>
     <string name="hspa_title_head">HSPA</string>
     <string name="hspa_summary_head">Enable HSDPA/HSUPA</string>
 
+    <!-- Dock Preference -->
     <string name="category_dock_title">Dock</string>
     <string name="dockaudio_subcat_title">Audio</string>
     <string name="use_dock_audio_title_head">Use Dock USB Audio</string>
diff --git a/DeviceSettings/res/xml/screen_preferences.xml b/DeviceSettings/res/xml/screen_preferences.xml
index d053bbd..0e05e3e 100644
--- a/DeviceSettings/res/xml/screen_preferences.xml
+++ b/DeviceSettings/res/xml/screen_preferences.xml
@@ -1,59 +1,66 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
-    android:title="@string/app_name">
+        android:title="@string/app_name">
 
     <PreferenceCategory
-                android:title="@string/screen_colors_title">
-    
-    <!-- mDNIe Scenario modes -->
-    <com.cyanogenmod.settings.device.mDNIeScenario
-	        android:key="mdnie_scenario"
-	        android:title="@string/mdnie_scenario_title_head"
-	        android:summary="@string/mdnie_scenario_summary_head"
-	        android:entries="@array/mdnie_scenario_entries"
-  			android:entryValues="@array/mdnie_scenario_entries_values"
-  			android:defaultValue="0" />
+            android:title="@string/screen_colors_title">
+        <!-- CABC -->
+        <com.cyanogenmod.settings.device.CABC
+                android:key="cabc"
+                android:title="@string/cabc_title_head"
+                android:summary="@string/cabc_summary_head"
+                android:defaultValue="true" />
 
-    <!-- mDNIe Mode -->
-    <com.cyanogenmod.settings.device.mDNIeMode
-	        android:key="mdnie_mode"
-	        android:title="@string/mdnie_mode_title_head"
-	        android:summary="@string/mdnie_mode_summary_head"
-	        android:entries="@array/mdnie_mode_entries"
-  			android:entryValues="@array/mdnie_mode_entries_values"
-  			android:defaultValue="1" />
+        <!-- mDNIe Scenario modes -->
+        <com.cyanogenmod.settings.device.mDNIeScenario
+                android:key="mdnie_scenario"
+                android:title="@string/mdnie_scenario_title_head"
+                android:summary="@string/mdnie_scenario_summary_head"
+                android:entries="@array/mdnie_scenario_entries"
+                android:entryValues="@array/mdnie_scenario_entries_values"
+                android:defaultValue="0" />
 
-    <!-- mDNIe Negative mode -->
-    <com.cyanogenmod.settings.device.mDNIeNegative
-	        android:key="mdnie_negative"
-	        android:title="@string/mdnie_negative_title_head"
-	        android:summary="@string/mdnie_negative_summary_head"
-	        android:entries="@array/mdnie_negative_entries"
-  			android:entryValues="@array/mdnie_negative_entries_values"
-  			android:defaultValue="0" />
+        <!-- mDNIe Mode -->
+        <com.cyanogenmod.settings.device.mDNIeMode
+                android:key="mdnie_mode"
+                android:title="@string/mdnie_mode_title_head"
+                android:summary="@string/mdnie_mode_summary_head"
+                android:entries="@array/mdnie_mode_entries"
+                android:entryValues="@array/mdnie_mode_entries_values"
+                android:defaultValue="1" />
 
-    <!-- mDNIe Outdoor mode -->
-    <com.cyanogenmod.settings.device.mDNIeOutdoor
-	        android:key="mdnie_outdoor"
-	        android:title="@string/mdnie_outdoor_title_head"
-	        android:summary="@string/mdnie_outdoor_summary_head"
-	        android:entries="@array/mdnie_outdoor_entries"
-  			android:entryValues="@array/mdnie_outdoor_entries_values"
-  			android:defaultValue="0" />
+        <!-- mDNIe Negative mode -->
+        <com.cyanogenmod.settings.device.mDNIeNegative
+                android:key="mdnie_negative"
+                android:title="@string/mdnie_negative_title_head"
+                android:summary="@string/mdnie_negative_summary_head"
+                android:entries="@array/mdnie_negative_entries"
+                android:entryValues="@array/mdnie_negative_entries_values"
+                android:defaultValue="0" />
 
-    <!-- Panel gamma -->
-    <com.cyanogenmod.settings.device.PanelGamma
+        <!-- mDNIe Outdoor mode -->
+        <com.cyanogenmod.settings.device.mDNIeOutdoor
+                android:key="mdnie_outdoor"
+                android:title="@string/mdnie_outdoor_title_head"
+                android:summary="@string/mdnie_outdoor_summary_head"
+                android:entries="@array/mdnie_outdoor_entries"
+                android:entryValues="@array/mdnie_outdoor_entries_values"
+                android:defaultValue="0" />
+
+        <!-- Panel gamma -->
+        <com.cyanogenmod.settings.device.PanelGamma
                 android:key="panel_gamma"
                 android:title="@string/panel_gamma_title_head"
                 android:summary="@string/panel_gamma_summary_head"
                 android:entries="@array/panel_gamma_entries"
-                        android:entryValues="@array/panel_gamma_entries_values"
-                        android:defaultValue="0" />
-
+                android:entryValues="@array/panel_gamma_entries_values"
+                android:defaultValue="0" />
     </PreferenceCategory>
+
+    <!-- Touchscreen -->
     <PreferenceCategory
-                android:title="@string/touchscreen_subcat_title">
-    <com.cyanogenmod.settings.device.TouchscreenSensitivity
+            android:title="@string/touchscreen_subcat_title">
+        <com.cyanogenmod.settings.device.TouchscreenSensitivity
                 android:key="touchscreen_sensitivity"
                 android:title="@string/touchscreen_sensitivity_title_head"
                 android:summary="@string/touchscreen_sensitivity_summary_head"
@@ -62,22 +69,21 @@
                 android:defaultValue="50" />
     </PreferenceCategory>
 
+    <!-- Touchkeys -->
     <PreferenceCategory
-                android:title="@string/touchkey_subcat_title">
-    <!-- Touchkey backlight -->
-    <CheckBoxPreference
+            android:title="@string/touchkey_subcat_title">
+        <CheckBoxPreference
                 android:key="touchkey_light"
                 android:title="@string/touchkey_light_title_head"
                 android:summary="@string/touchkey_light_summary_head"
-                android:defaultValue="true"
-                />
-    <com.cyanogenmod.settings.device.TouchkeyTimeout
+                android:defaultValue="true" />
+        <com.cyanogenmod.settings.device.TouchkeyTimeout
                 android:key="touchkey_timeout"
                 android:title="@string/touchkey_timeout_title_head"
                 android:summary="@string/touchkey_timeout_summary_head"
                 android:entries="@array/touchkey_timeout_entries"
                 android:entryValues="@array/touchkey_timeout_entries_values"
-                android:defaultValue="3"
-                />
+                android:defaultValue="3" />
     </PreferenceCategory>
+
 </PreferenceScreen>
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;
+    }
+
+}
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java b/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
index c4ff285..9e35889 100644
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
@@ -35,6 +35,7 @@ public class DeviceSettings extends FragmentActivity {
 
     public static final String SHARED_PREFERENCES_BASENAME = "com.cyanogenmod.settings.device";
     public static final String ACTION_UPDATE_PREFERENCES = "com.cyanogenmod.settings.device.UPDATE";
+    public static final String KEY_CABC = "cabc";
     public static final String KEY_MDNIE_SCENARIO = "mdnie_scenario";
     public static final String KEY_MDNIE_MODE = "mdnie_mode";
     public static final String KEY_MDNIE_NEGATIVE = "mdnie_negative";
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/ScreenFragmentActivity.java b/DeviceSettings/src/com/cyanogenmod/settings/device/ScreenFragmentActivity.java
index 9ba40f7..29c08a9 100755
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/ScreenFragmentActivity.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/ScreenFragmentActivity.java
@@ -37,6 +37,7 @@ public class ScreenFragmentActivity extends PreferenceFragment {
     private static final String FILE_TOUCHKEY_DISABLE = "/sys/class/sec/sec_touchkey/force_disable";
     private static final String FILE_TOUCHKEY_BRIGHTNESS = "/sys/class/sec/sec_touchkey/brightness";
 
+    private CABC mCABC;
     private mDNIeScenario mmDNIeScenario;
     private mDNIeMode mmDNIeMode;
     private mDNIeNegative mmDNIeNegative;
@@ -51,6 +52,9 @@ public class ScreenFragmentActivity extends PreferenceFragment {
         addPreferencesFromResource(R.xml.screen_preferences);
         PreferenceScreen prefSet = getPreferenceScreen();
 
+        mCABC = (CABC) findPreference(DeviceSettings.KEY_CABC);
+        mCABC.setEnabled(CABC.isSupported());
+
         mmDNIeScenario = (mDNIeScenario) findPreference(DeviceSettings.KEY_MDNIE_SCENARIO);
         mmDNIeScenario.setEnabled(mDNIeScenario.isSupported());
 
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java b/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java
index e9c1b49..da05d7f 100644
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java
@@ -24,6 +24,7 @@ public class Startup extends BroadcastReceiver {
 
     @Override
     public void onReceive(final Context context, final Intent bootintent) {
+        CABC.restore(context);
         DockFragmentActivity.restore(context);
         HapticFragmentActivity.restore(context);
         mDNIeScenario.restore(context);