implement HDMI-like demo mode for remote display

adding the following two system properties to control remote
display rotation and device orientation lock:

"persist.demo.rotationlock"=true|false
"persist.demo.remoterotation"=landscape|portrait

Bug: 18317603
Change-Id: Id5fe115f895c6a0e72563036b9a98ff3b5037763

1 files changed, 16 insertions, 0 deletions

diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
index 3c44e87..90f4312 100644
--- a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -342,6 +342,8 @@ public class PhoneWindowManager implements WindowManagerPolicy {
     int mUndockedHdmiRotation;
     int mDemoHdmiRotation;
     boolean mDemoHdmiRotationLock;
+    int mDemoRotation;
+    boolean mDemoRotationLock;
 
     boolean mWakeGestureEnabledSetting;
     MyWakeGestureListener mWakeGestureListener;
@@ -1444,6 +1446,16 @@ public class PhoneWindowManager implements WindowManagerPolicy {
         }
         mDemoHdmiRotationLock = SystemProperties.getBoolean("persist.demo.hdmirotationlock", false);
 
+        // For demo purposes, allow the rotation of the remote display to be controlled.
+        // By default, remote display locks rotation to landscape.
+        if ("portrait".equals(SystemProperties.get("persist.demo.remoterotation"))) {
+            mDemoRotation = mPortraitRotation;
+        } else {
+            mDemoRotation = mLandscapeRotation;
+        }
+        mDemoRotationLock = SystemProperties.getBoolean(
+                "persist.demo.rotationlock", false);
+
         // Only force the default orientation if the screen is xlarge, at least 960dp x 720dp, per
         // http://developer.android.com/guide/practices/screens_support.html#range
         mForceDefaultOrientation = longSizeDp >= 960 && shortSizeDp >= 720 &&
@@ -5294,6 +5306,10 @@ public class PhoneWindowManager implements WindowManagerPolicy {
                 // full multi-display support).
                 // Note that the dock orientation overrides the HDMI orientation.
                 preferredRotation = mUndockedHdmiRotation;
+            } else if (mDemoRotationLock) {
+                // Ignore sensor when demo rotation lock is enabled.
+                // Note that the dock orientation and HDMI rotation lock override this.
+                preferredRotation = mDemoRotation;
             } else if (orientation == ActivityInfo.SCREEN_ORIENTATION_LOCKED) {
                 // Application just wants to remain locked in the last rotation.
                 preferredRotation = lastRotation;