From 259267c0ffa34a99aad3af08d58dfd5aa340bd04 Mon Sep 17 00:00:00 2001
From: Tad <tad@spotco.us>
Date: Fri, 20 Oct 2017 15:29:25 -0400
Subject: [PATCH] Reduced Resolution Feature 2/2

Change-Id: Ib3d363e4fc66821ebb5303a974589c0b18c5ef9b
---
 core/java/android/os/PowerManager.java | 46 ++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/core/java/android/os/PowerManager.java b/core/java/android/os/PowerManager.java
index 5c8effec0ed..62954ddadea 100644
--- a/core/java/android/os/PowerManager.java
+++ b/core/java/android/os/PowerManager.java
@@ -438,6 +438,8 @@ public final class PowerManager {
     final IPowerManager mService;
     final Handler mHandler;
 
+    final IWindowManager mWm;
+
     IDeviceIdleController mIDeviceIdleController;
 
     /**
@@ -447,6 +449,9 @@ public final class PowerManager {
         mContext = context;
         mService = service;
         mHandler = handler;
+
+        mWm = IWindowManager.Stub.asInterface(ServiceManager.checkService(
+                        Context.WINDOW_SERVICE));
     }
 
     /**
@@ -988,6 +993,47 @@ public final class PowerManager {
         }
     }
 
+    public boolean isReducedResolution() {
+        try {
+            Point initialSize = new Point();
+            Point baseSize = new Point();
+
+            mWm.getInitialDisplaySize(Display.DEFAULT_DISPLAY, initialSize);
+            mWm.getBaseDisplaySize(Display.DEFAULT_DISPLAY, baseSize);
+
+            return !initialSize.equals(baseSize);
+        } catch (Exception e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    public boolean setReducedResolution(boolean mode) {
+        try {
+            if (mode) {
+                Point initialSize = new Point();
+                mWm.getInitialDisplaySize(Display.DEFAULT_DISPLAY, initialSize);
+
+                Point newSize;
+
+                switch(initialSize.x) {
+                    case 1440:
+                        newSize = new Point(1080, 1920);
+                    case 1080:
+                        newSize = new Point(720, 1280);
+                    default:
+                        return false;
+                }
+
+                mWm.setForcedDisplaySize(Display.DEFAULT_DISPLAY, newSize.x, newSize.y);
+            } else {
+                mWm.clearForcedDisplaySize(Display.DEFAULT_DISPLAY);
+            }
+            return isReducedResolution();
+        } catch (Exception e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
     /**
      * Returns true if the device is currently in idle mode.  This happens when a device
      * has been sitting unused and unmoving for a sufficiently long period of time, so that
-- 
2.14.2