InCallUI: Add initial smart cover support

Change-Id: I7bd476a725efff9a3b9cfce91771750e231ea50f
Signed-off-by: Roman Birg <roman@cyngn.com>

Author: romanbb

res/layout/incall_screen.xml

@@ -20,6 +20,7 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="@android:color/black"
+    android:animateLayoutChanges="true"
     android:id="@+id/main">
 
     <RelativeLayout

src/com/android/incallui/InCallActivity.java

@@ -30,10 +30,13 @@
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.FragmentTransaction;
+import android.content.BroadcastReceiver;
+import android.content.Context;
 import android.content.DialogInterface;
-import android.content.DialogInterface.OnClickListener;
 import android.content.DialogInterface.OnCancelListener;
+import android.content.DialogInterface.OnClickListener;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.database.ContentObserver;
@@ -42,12 +45,17 @@
 import android.os.Handler;
 import android.provider.Settings;
 import android.telephony.MSimTelephonyManager;
+import android.util.DisplayMetrics;
+import android.view.Gravity;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.ViewGroup;
 import android.view.Window;
 import android.view.WindowManager;
+import android.view.WindowManagerPolicy;
 import android.view.accessibility.AccessibilityEvent;
+import android.widget.FrameLayout;
 import android.widget.Toast;
 
 /**
@@ -86,6 +94,19 @@ public void onChange(boolean selfChange, Uri uri) {
         }
     };
 
+    private int[] mCoverWindowCoords = null;
+    private BroadcastReceiver mLidStateChangeReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (WindowManagerPolicy.ACTION_LID_STATE_CHANGED.equals(intent.getAction())) {
+                boolean on = intent.getIntExtra(WindowManagerPolicy.EXTRA_LID_STATE,
+                        WindowManagerPolicy.WindowManagerFuncs.LID_ABSENT)
+                        == WindowManagerPolicy.WindowManagerFuncs.LID_CLOSED;
+                showSmartCover(on);
+            }
+        }
+    };
+
     @Override
     protected void onCreate(Bundle icicle) {
         Log.d(this, "onCreate()...  this = " + this);
@@ -97,6 +118,13 @@ protected void onCreate(Bundle icicle) {
             return;
         }
 
+        mCoverWindowCoords = getResources().getIntArray(
+                com.android.internal.R.array.config_smartCoverWindowCoords);
+        if (mCoverWindowCoords != null && mCoverWindowCoords.length != 4) {
+            // make sure there are exactly 4 dimensions provided, or ignore
+            mCoverWindowCoords = null;
+        }
+
         // set this flag so this activity will stay in front of the keyguard
         // Have the WindowManager filter out touch events that are "too fat".
         int flags = WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
@@ -150,6 +178,10 @@ protected void onResume() {
             mShowDialpadRequested = false;
         }
         updateSystemBarTranslucency();
+        if (mCoverWindowCoords != null) {
+            registerReceiver(mLidStateChangeReceiver, new IntentFilter(
+                    WindowManagerPolicy.ACTION_LID_STATE_CHANGED));
+        }
     }
 
     // onPause is guaranteed to be called when the InCallActivity goes
@@ -158,6 +190,9 @@ protected void onResume() {
     protected void onPause() {
         Log.d(this, "onPause()...");
         super.onPause();
+        if (mCoverWindowCoords != null) {
+            unregisterReceiver(mLidStateChangeReceiver);
+        }
 
         mIsForegroundActivity = false;
 
@@ -454,6 +489,55 @@ protected void initializeInCall() {
         }
     }
 
+    protected void showSmartCover(boolean show) {
+        mAnswerFragment.getView().setVisibility(show ? View.INVISIBLE : View.VISIBLE);
+
+        DisplayMetrics metrics = getResources().getDisplayMetrics();
+        final int windowHeight = mCoverWindowCoords[2] - mCoverWindowCoords[0];
+        final int windowWidth = metrics.widthPixels - mCoverWindowCoords[1]
+                - (metrics.widthPixels - mCoverWindowCoords[3]);
+
+        final int stretch = ViewGroup.LayoutParams.MATCH_PARENT;
+
+        View main = findViewById(R.id.main);
+        View callCard = mCallCardFragment.getView();
+        if (show) {
+            // clear bg color
+            main.setBackground(null);
+
+            // center
+            FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(windowWidth, stretch);
+            lp.gravity = Gravity.TOP | Gravity.CENTER_HORIZONTAL;
+            main.setLayoutParams(lp);
+
+            // adjust callcard height
+            ViewGroup.LayoutParams params = callCard.getLayoutParams();
+            params.height = windowHeight;
+
+            callCard.setSystemUiVisibility(callCard.getSystemUiVisibility()
+                    | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
+
+            // disable touches
+            getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);
+        } else {
+            // reset default parameters
+            main.setBackgroundColor(R.color.incall_button_background);
+
+            FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(stretch, stretch);
+            main.setLayoutParams(lp);
+
+            ViewGroup.LayoutParams params = mCallCardFragment.getView().getLayoutParams();
+            params.height = stretch;
+
+            callCard.setSystemUiVisibility(callCard.getSystemUiVisibility()
+                    & ~View.SYSTEM_UI_FLAG_FULLSCREEN & ~View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
+
+            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);
+        }
+        callCard.invalidate();
+        main.requestLayout();
+    }
+
     private void toast(String text) {
         final Toast toast = Toast.makeText(this, text, Toast.LENGTH_SHORT);