From 96cf38e427fdc59240c52c372f8db9ce54683661 Mon Sep 17 00:00:00 2001
From: JianYang Liu <jianyliu@google.com>
Date: Mon, 16 Mar 2020 14:54:33 -0700
Subject: Added boolean flag to allow showing notification on the bottom of the
 screen rather than on the top.

Bug: 146901563
Test: Manual
Change-Id: I493dd41190c487e00acd783fa02361afd3380188
---
 .../res/drawable/headsup_scrim_bottom.xml          | 24 +++++++++++
 .../res/layout/headsup_container_bottom.xml        | 50 ++++++++++++++++++++++
 packages/CarSystemUI/res/values/config.xml         |  7 +++
 .../CarHeadsUpNotificationSystemContainer.java     | 10 +++--
 4 files changed, 88 insertions(+), 3 deletions(-)
 create mode 100644 packages/CarSystemUI/res/drawable/headsup_scrim_bottom.xml
 create mode 100644 packages/CarSystemUI/res/layout/headsup_container_bottom.xml

diff --git a/packages/CarSystemUI/res/drawable/headsup_scrim_bottom.xml b/packages/CarSystemUI/res/drawable/headsup_scrim_bottom.xml
new file mode 100644
index 000000000000..1724ef008269
--- /dev/null
+++ b/packages/CarSystemUI/res/drawable/headsup_scrim_bottom.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2020 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<shape
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <gradient
+        android:startColor="@android:color/black"
+        android:endColor="@android:color/transparent"
+        android:angle="90" />
+</shape>
diff --git a/packages/CarSystemUI/res/layout/headsup_container_bottom.xml b/packages/CarSystemUI/res/layout/headsup_container_bottom.xml
new file mode 100644
index 000000000000..caf1677234d0
--- /dev/null
+++ b/packages/CarSystemUI/res/layout/headsup_container_bottom.xml
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2020 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/notification_headsup"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/gradient_edge"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        app:layout_constraintGuide_begin="@dimen/headsup_scrim_height"/>
+
+    <View
+        android:id="@+id/scrim"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:background="@drawable/headsup_scrim_bottom"
+        app:layout_constraintBottom_toBottomOf="@+id/gradient_edge"
+        app:layout_constraintTop_toTopOf="parent"/>
+
+    <FrameLayout
+        android:id="@+id/headsup_content"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/headsup_notification_top_margin"
+        app:layout_constraintEnd_toStartOf="parent"
+        app:layout_constraintStart_toEndOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+    />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/packages/CarSystemUI/res/values/config.xml b/packages/CarSystemUI/res/values/config.xml
index aaa65de2fa1d..2077e7707f59 100644
--- a/packages/CarSystemUI/res/values/config.xml
+++ b/packages/CarSystemUI/res/values/config.xml
@@ -34,6 +34,13 @@
 
     <!-- Whether heads-up notifications should be shown when shade is open. -->
     <bool name="config_enableHeadsUpNotificationWhenNotificationShadeOpen">true</bool>
+    <!-- Whether heads-up notifications should be shown on the bottom. If false, heads-up
+         notifications will be shown pushed to the top of their parent container. If true, they will
+         be shown pushed to the bottom of their parent container. If true, then should override
+         config_headsUpNotificationAnimationHelper to use a different AnimationHelper, such as
+         com.android.car.notification.headsup.animationhelper.
+         CarHeadsUpNotificationBottomAnimationHelper. -->
+    <bool name="config_showHeadsUpNotificationOnBottom">false</bool>
 
     <bool name="config_hideNavWhenKeyguardBouncerShown">true</bool>
     <bool name="config_enablePersistentDockedActivity">false</bool>
diff --git a/packages/CarSystemUI/src/com/android/systemui/car/notification/CarHeadsUpNotificationSystemContainer.java b/packages/CarSystemUI/src/com/android/systemui/car/notification/CarHeadsUpNotificationSystemContainer.java
index 689d2d537bd6..53e5d9fe91ec 100644
--- a/packages/CarSystemUI/src/com/android/systemui/car/notification/CarHeadsUpNotificationSystemContainer.java
+++ b/packages/CarSystemUI/src/com/android/systemui/car/notification/CarHeadsUpNotificationSystemContainer.java
@@ -60,6 +60,8 @@ public class CarHeadsUpNotificationSystemContainer implements CarHeadsUpNotifica
         mCarDeviceProvisionedController = deviceProvisionedController;
         mCarStatusBarLazy = carStatusBarLazy;
 
+        boolean showOnBottom = resources.getBoolean(R.bool.config_showHeadsUpNotificationOnBottom);
+
         WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
                 WindowManager.LayoutParams.WRAP_CONTENT,
@@ -68,11 +70,13 @@ public class CarHeadsUpNotificationSystemContainer implements CarHeadsUpNotifica
                         | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
                 PixelFormat.TRANSLUCENT);
 
-        lp.gravity = Gravity.TOP;
+        lp.gravity = showOnBottom ? Gravity.BOTTOM : Gravity.TOP;
         lp.setTitle("HeadsUpNotification");
 
-        mWindow = (ViewGroup) LayoutInflater.from(context)
-                .inflate(R.layout.headsup_container, null, false);
+        int layoutId = showOnBottom
+                ? R.layout.headsup_container_bottom
+                : R.layout.headsup_container;
+        mWindow = (ViewGroup) LayoutInflater.from(context).inflate(layoutId, null, false);
         windowManager.addView(mWindow, lp);
         mWindow.setVisibility(View.INVISIBLE);
         mHeadsUpContentFrame = mWindow.findViewById(R.id.headsup_content);
-- 
cgit v1.2.3-59-g8ed1b