Initial changes for recents.

Change-Id: Ide2c202b4a5b25410f0f32bd0a81ccf817ede38f

4 files changed, 45 insertions, 5 deletions

diff --git a/core/java/android/app/ActivityManager.java b/core/java/android/app/ActivityManager.java
index c877cd3..7f7616f 100644
--- a/core/java/android/app/ActivityManager.java
+++ b/core/java/android/app/ActivityManager.java
@@ -933,6 +933,16 @@ public class ActivityManager {
         }
     }
 
+    /** @hide */
+    public boolean isInHomeStack(int taskId) {
+        try {
+            return ActivityManagerNative.getDefault().isInHomeStack(taskId);
+        } catch (RemoteException e) {
+            // System dead, we will be dead too soon!
+            return false;
+        }
+    }
+
     /**
      * Flag for {@link #moveTaskToFront(int, int)}: also move the "home"
      * activity along with the task, so it is positioned immediately behind
diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index f4358e9..c7c81dd 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -654,6 +654,15 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             return true;
         }
 
+        case IS_IN_HOME_STACK_TRANSACTION: {
+            data.enforceInterface(IActivityManager.descriptor);
+            int taskId = data.readInt();
+            boolean isInHomeStack = isInHomeStack(taskId);
+            reply.writeNoException();
+            reply.writeInt(isInHomeStack ? 1 : 0);
+            return true;
+        }
+
         case SET_FOCUSED_STACK_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             int stackId = data.readInt();
@@ -2833,6 +2842,19 @@ class ActivityManagerProxy implements IActivityManager
         return info;
     }
     @Override
+    public boolean isInHomeStack(int taskId) throws RemoteException {
+        Parcel data = Parcel.obtain();
+        Parcel reply = Parcel.obtain();
+        data.writeInterfaceToken(IActivityManager.descriptor);
+        data.writeInt(taskId);
+        mRemote.transact(IS_IN_HOME_STACK_TRANSACTION, data, reply, 0);
+        reply.readException();
+        boolean isInHomeStack = reply.readInt() > 0;
+        data.recycle();
+        reply.recycle();
+        return isInHomeStack;
+    }
+    @Override
     public void setFocusedStack(int stackId) throws RemoteException
     {
         Parcel data = Parcel.obtain();
diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 138eea2..9cfd85a 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -3017,11 +3017,17 @@ public final class ActivityThread {
                 int h;
                 if (w < 0) {
                     Resources res = r.activity.getResources();
-                    mThumbnailHeight = h =
-                        res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height);
-
-                    mThumbnailWidth = w =
-                        res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width);
+                    if (SystemProperties.getBoolean("persist.recents.use_alternate", false)) {
+                        int wId = com.android.internal.R.dimen.recents_thumbnail_width;
+                        int hId = com.android.internal.R.dimen.recents_thumbnail_height;
+                        mThumbnailWidth = w = res.getDimensionPixelSize(wId);
+                        mThumbnailHeight = h = res.getDimensionPixelSize(hId);
+                    } else {
+                        mThumbnailHeight = h =
+                            res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height);
+                        mThumbnailWidth = w =
+                            res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width);
+                    }
                 } else {
                     h = mThumbnailHeight;
                 }
diff --git a/core/java/android/app/IActivityManager.java b/core/java/android/app/IActivityManager.java
index 1943bba..f2cabf4 100644
--- a/core/java/android/app/IActivityManager.java
+++ b/core/java/android/app/IActivityManager.java
@@ -122,6 +122,7 @@ public interface IActivityManager extends IInterface {
     public void resizeStack(int stackId, Rect bounds) throws RemoteException;
     public List<StackInfo> getAllStackInfos() throws RemoteException;
     public StackInfo getStackInfo(int stackId) throws RemoteException;
+    public boolean isInHomeStack(int taskId) throws RemoteException;
     public void setFocusedStack(int stackId) throws RemoteException;
     public int getTaskForActivity(IBinder token, boolean onlyRoot) throws RemoteException;
     /* oneway */
@@ -717,4 +718,5 @@ public interface IActivityManager extends IInterface {
     // Start of L transactions
     int GET_TAG_FOR_INTENT_SENDER_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+210;
     int START_USER_IN_BACKGROUND_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+211;
+    int IS_IN_HOME_STACK_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+212;
 }