From 914853c2ce887b9d86e1fe169b9cfcced2907b67 Mon Sep 17 00:00:00 2001
From: davros <davros@droidconcepts.com>
Date: Fri, 19 Jul 2013 02:06:46 -0400
Subject: [PATCH] Revert "Remove 16bpp option"

This reverts commit 4307fe212aaccf0b867e942d1909bc6e0c1dfce5.
---
 res/values/strings.xml                        |  4 ++++
 res/xml/performance_settings.xml              |  5 ++++
 .../cyanogenmod/PerformanceSettings.java      | 23 +++++++++++++++++++
 3 files changed, 32 insertions(+)

diff --git a/res/values/strings.xml b/res/values/strings.xml
index 8cb4e3f..c9cd43b 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -4764,6 +4764,10 @@
     <string name="dithering_color_banding">Fix color banding (default)</string>
     <string name="dithering_blur_effect">Fix color banding and blur effect</string>
 
+    <!-- Performance Settings : 16bpp Alpha -->
+    <string name="pref_use_16bpp_alpha_title">16bit transparency</string>
+    <string name="pref_use_16bpp_alpha_summary">Better graphics performance, but lower quality and may cause visual artifacts (requires reboot)</string>
+
     <!-- Display : Rotation  -->
     <string name="display_rotation_title">Rotation</string>
     <string name="display_rotation_disabled">Disabled</string>
diff --git a/res/xml/performance_settings.xml b/res/xml/performance_settings.xml
index 13467ea..dacd0a9 100644
--- a/res/xml/performance_settings.xml
+++ b/res/xml/performance_settings.xml
@@ -40,6 +40,11 @@
         android:title="@string/memory_management_title"
         android:summary="@string/memory_management_summary" />
 
+    <CheckBoxPreference
+        android:key="pref_use_16bpp_alpha"
+        android:title="@string/pref_use_16bpp_alpha_title"
+        android:summary="@string/pref_use_16bpp_alpha_summary" />
+
     <ListPreference
         android:key="pref_use_dithering"
         android:persistent="false"
diff --git a/src/com/android/settings/cyanogenmod/PerformanceSettings.java b/src/com/android/settings/cyanogenmod/PerformanceSettings.java
index bf5eb09..0c100e5 100644
--- a/src/com/android/settings/cyanogenmod/PerformanceSettings.java
+++ b/src/com/android/settings/cyanogenmod/PerformanceSettings.java
@@ -41,8 +41,14 @@ public class PerformanceSettings extends SettingsPreferenceFragment
 
     private static final String USE_DITHERING_DEFAULT = "1";
 
+    private static final String USE_16BPP_ALPHA_PREF = "pref_use_16bpp_alpha";
+
+    private static final String USE_16BPP_ALPHA_PROP = "persist.sys.use_16bpp_alpha";
+
     private ListPreference mUseDitheringPref;
 
+    private CheckBoxPreference mUse16bppAlphaPref;
+
     private AlertDialog alertDialog;
 
     @Override
@@ -61,6 +67,10 @@ public void onCreate(Bundle savedInstanceState) {
             mUseDitheringPref.setValue(useDithering);
             mUseDitheringPref.setSummary(mUseDitheringPref.getEntry());
 
+            mUse16bppAlphaPref = (CheckBoxPreference) prefSet.findPreference(USE_16BPP_ALPHA_PREF);
+            String use16bppAlpha = SystemProperties.get(USE_16BPP_ALPHA_PROP, "0");
+            mUse16bppAlphaPref.setChecked("1".equals(use16bppAlpha));
+
             /* Display the warning dialog */
             alertDialog = new AlertDialog.Builder(getActivity()).create();
             alertDialog.setTitle(R.string.performance_settings_warning_title);
@@ -77,6 +87,19 @@ public void onClick(DialogInterface dialog, int which) {
         }
     }
 
+    @Override
+    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
+        if (preference == mUse16bppAlphaPref) {
+            SystemProperties.set(USE_16BPP_ALPHA_PROP,
+                    mUse16bppAlphaPref.isChecked() ? "1" : "0");
+        } else {
+            // If we didn't handle it, let preferences handle it.
+            return super.onPreferenceTreeClick(preferenceScreen, preference);
+        }
+
+        return true;
+    }
+
     public boolean onPreferenceChange(Preference preference, Object newValue) {
         if (preference == mUseDitheringPref) {
             String newVal = (String) newValue;