Cherish: Add lockscreen background blur [2/2]

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: Hưng Phan <phandinhhungvp2001@gmail.com>

res/values/cherish_strings.xml

@@ -1268,4 +1268,7 @@
     <string name="theme_navbar_picker_nexus">Nexus</string>
     <string name="theme_navbar_picker_old">Old</string>
     <string name="theme_navbar_picker_sammy">Samsung</string>
+    
+    <!-- Lockscreen blur -->
+    <string name="lockscreen_blur_title">Background blur</string>
 </resources>

res/xml/cherish_settings_lockscreen.xml

@@ -66,6 +66,15 @@
 		android:icon="@drawable/ic_upset"
         android:title="@string/always_on_display_schedule_title"
         android:fragment="com.cherish.settings.fragments.AODSchedule" />
+		
+	<com.cherish.settings.preferences.SystemSettingSeekBarPreference
+            android:key="lockscreen_blur"
+            android:title="@string/lockscreen_blur_title"
+            android:max="100"
+            settings:min="0"
+            settings:units="%"
+            settings:interval="5"
+            android:defaultValue="0" />
 
    <com.cherish.settings.preferences.SystemSettingSwitchPreference
             android:key="lockscreen_status_bar"

src/com/cherish/settings/fragments/LockScreenSettings.java

@@ -40,6 +40,8 @@ import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;
 import com.android.internal.util.cherish.FodUtils;
 import com.android.internal.util.cherish.CherishUtils;
+import com.cherish.settings.preferences.SystemSettingSeekBarPreference;
+import com.cherish.settings.utils.Utils;
 import com.cherish.settings.preferences.SystemSettingListPreference;
 import com.cherish.settings.preferences.CustomSeekBarPreference;
 import com.cherish.settings.preferences.SecureSettingListPreference;
@@ -64,6 +66,8 @@ public class LockScreenSettings extends SettingsPreferenceFragment implements
     private static final String AOD_SCHEDULE_KEY = "always_on_display_schedule";
     private static final String FOD_ANIMATION_CATEGORY = "fod_animations";
     private static final String FOD_ICON_PICKER_CATEGORY = "fod_icon_picker";
+    private static final String KEY_LOCKSCREEN_BLUR = "lockscreen_blur";
+
     private ContentResolver mResolver;
     private Preference FODSettings;
 	
@@ -73,10 +77,11 @@ public class LockScreenSettings extends SettingsPreferenceFragment implements
     static final int MODE_MIXED_SUNSET = 3;
     static final int MODE_MIXED_SUNRISE = 4;
 
+    private SystemSettingSeekBarPreference mLockscreenBlur;
     private CustomSeekBarPreference mClockFontSize;
     private CustomSeekBarPreference mDateFontSize;
     private CustomSeekBarPreference mOwnerInfoFontSize;
-	private CustomSeekBarPreference mCustomTextClockFontSize;
+    private CustomSeekBarPreference mCustomTextClockFontSize;
     private PreferenceCategory mFODIconPickerCategory;
     private Preference mAODPref;
 
@@ -88,6 +93,11 @@ public class LockScreenSettings extends SettingsPreferenceFragment implements
         ContentResolver resolver = getActivity().getContentResolver();
         PreferenceScreen prefScreen = getPreferenceScreen();
         Resources resources = getResources();
+
+        mLockscreenBlur = (SystemSettingSeekBarPreference) findPreference(KEY_LOCKSCREEN_BLUR);
+        if (!Utils.isBlurSupported()) {
+            prefScreen.removePreference(mLockscreenBlur);
+        }
 		
 	mFODIconPickerCategory = findPreference(FOD_ICON_PICKER_CATEGORY);
         if (mFODIconPickerCategory != null && !FodUtils.hasFodSupport(getContext())) {

src/com/cherish/settings/utils/Utils.java

@@ -19,13 +19,23 @@ package com.cherish.settings.utils;
 
 import static android.os.UserHandle.USER_SYSTEM;
 
+import android.app.Activity;
+import android.app.ActivityManager;
+import android.content.ContentResolver;
 import android.content.Context;
+import android.content.pm.ActivityInfo;
 import android.content.om.IOverlayManager;
 import android.os.AsyncTask;
 import android.os.RemoteException;
 import android.widget.Toast;
-
+import android.os.Build;
+import android.os.SystemProperties;
+import android.provider.Settings;
 import com.android.settings.R;
+import android.text.TextUtils;
+import android.view.KeyCharacterMap;
+import android.view.KeyEvent;
+import android.view.Surface;
 
 public class Utils {
 
@@ -36,5 +46,13 @@ public class Utils {
             e.printStackTrace();
         }
     }
+	
+	public static boolean isBlurSupported() {
+        boolean blurSupportedSysProp = SystemProperties
+            .getBoolean("ro.surface_flinger.supports_background_blur", false);
+        boolean blurDisabledSysProp = SystemProperties
+            .getBoolean("persist.sys.sf.disable_blurs", false);
+        return blurSupportedSysProp && !blurDisabledSysProp && ActivityManager.isHighEndGfx();
+    }
 
 }