Implement HUN visuals: shadows and translucency

Bug: 15106201
Change-Id: I718e3d36355d0f58abc3daadb8c6a9d554f29bec

8 files changed, 76 insertions, 82 deletions

diff --git a/packages/SystemUI/res/drawable-sw600dp-hdpi/heads_up_window_bg.9.png b/packages/SystemUI/res/drawable-sw600dp-hdpi/heads_up_window_bg.9.png
deleted file mode 100644
index b30cf15b28b..00000000000
--- a/packages/SystemUI/res/drawable-sw600dp-hdpi/heads_up_window_bg.9.png
+++ /dev/null
diff --git a/packages/SystemUI/res/drawable-sw600dp-xhdpi/heads_up_window_bg.9.png b/packages/SystemUI/res/drawable-sw600dp-xhdpi/heads_up_window_bg.9.png
deleted file mode 100644
index 31eb8f72010..00000000000
--- a/packages/SystemUI/res/drawable-sw600dp-xhdpi/heads_up_window_bg.9.png
+++ /dev/null
diff --git a/packages/SystemUI/res/drawable-sw600dp-xxhdpi/heads_up_window_bg.9.png b/packages/SystemUI/res/drawable-sw600dp-xxhdpi/heads_up_window_bg.9.png
deleted file mode 100644
index c76d0e1788d..00000000000
--- a/packages/SystemUI/res/drawable-sw600dp-xxhdpi/heads_up_window_bg.9.png
+++ /dev/null
diff --git a/packages/SystemUI/res/layout-sw600dp/heads_up.xml b/packages/SystemUI/res/layout-sw600dp/heads_up.xml
deleted file mode 100644
index f7035fe0319..00000000000
--- a/packages/SystemUI/res/layout-sw600dp/heads_up.xml
+++ /dev/null
@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-/*
-** Copyright 2014, 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.
-*/
--->
-<com.android.systemui.statusbar.policy.HeadsUpNotificationView
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_height="wrap_content"
-    android:layout_width="match_parent"
-    >
-    <FrameLayout
-        android:id="@+id/content_holder"
-        android:layout_height="wrap_content"
-        android:layout_width="@dimen/notification_panel_width"
-        android:background="@drawable/heads_up_window_bg"
-        />
-</com.android.systemui.statusbar.policy.HeadsUpNotificationView>
diff --git a/packages/SystemUI/res/layout/heads_up.xml b/packages/SystemUI/res/layout/heads_up.xml
index 7d9cfa1c49f..236fdc33593 100644
--- a/packages/SystemUI/res/layout/heads_up.xml
+++ b/packages/SystemUI/res/layout/heads_up.xml
@@ -1,26 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
-/* apps/common/assets/default/default/skins/StatusBar.xml
-**
-** Copyright 2006, 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.
-*/
+     Copyright (C) 2014 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.
 -->
 <com.android.systemui.statusbar.policy.HeadsUpNotificationView
         xmlns:android="http://schemas.android.com/apk/res/android"
-        android:layout_height="wrap_content"
-        android:layout_width="match_parent"
-        android:id="@+id/content_holder"
-        android:background="@drawable/notification_panel_bg"
-        />
\ No newline at end of file
+        android:layout_height="match_parent"
+        android:layout_width="match_parent">
+
+        <FrameLayout
+                android:layout_height="wrap_content"
+                android:layout_marginStart="@dimen/notification_side_padding"
+                android:layout_marginEnd="@dimen/notification_side_padding"
+                android:elevation="16dp"
+                android:id="@+id/content_holder"
+                style="@style/NotificationsQuickSettings" />
+
+</com.android.systemui.statusbar.policy.HeadsUpNotificationView>
\ No newline at end of file
diff --git a/packages/SystemUI/src/com/android/systemui/SwipeHelper.java b/packages/SystemUI/src/com/android/systemui/SwipeHelper.java
index 6387a924f0f..1b12cb07cb8 100644
--- a/packages/SystemUI/src/com/android/systemui/SwipeHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/SwipeHelper.java
@@ -56,6 +56,7 @@ public class SwipeHelper implements Gefingerpoken {
     static final float ALPHA_FADE_END = 0.5f; // fraction of thumbnail width
                                               // beyond which alpha->0
     private float mMinAlpha = 0f;
+    private float mMaxAlpha = 1f;
 
     private float mPagingTouchSlop;
     private Callback mCallback;
@@ -140,6 +141,10 @@ public class SwipeHelper implements Gefingerpoken {
         mMinAlpha = minAlpha;
     }
 
+    public void setMaxAlpha(float maxAlpha) {
+        mMaxAlpha = maxAlpha;
+    }
+
     private float getAlphaForOffset(View view) {
         float viewSize = getSize(view);
         final float fadeSize = ALPHA_FADE_END * viewSize;
@@ -150,7 +155,7 @@ public class SwipeHelper implements Gefingerpoken {
         } else if (pos < viewSize * (1.0f - ALPHA_FADE_START)) {
             result = 1.0f + (viewSize * ALPHA_FADE_START + pos) / fadeSize;
         }
-        return Math.max(mMinAlpha, result);
+        return Math.min(Math.max(mMinAlpha, result), mMaxAlpha);
     }
 
     private void updateAlphaFromOffset(View animView, boolean dismissable) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
index 0922abd77db..40985001b54 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
@@ -966,7 +966,7 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
 
     private void addHeadsUpView() {
         WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
-                LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT,
+                LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT,
                 WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL, // above the status bar!
                 WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                     | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/HeadsUpNotificationView.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/HeadsUpNotificationView.java
index 81e2cb38196..9271e717c41 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/HeadsUpNotificationView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/HeadsUpNotificationView.java
@@ -18,6 +18,7 @@ package com.android.systemui.statusbar.policy;
 
 import android.content.Context;
 import android.content.res.Configuration;
+import android.graphics.Outline;
 import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.util.Log;
@@ -25,6 +26,7 @@ import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewConfiguration;
 import android.view.ViewGroup;
+import android.view.ViewTreeObserver;
 import android.widget.FrameLayout;
 
 import com.android.systemui.ExpandHelper;
@@ -35,14 +37,17 @@ import com.android.systemui.statusbar.BaseStatusBar;
 import com.android.systemui.statusbar.ExpandableView;
 import com.android.systemui.statusbar.NotificationData;
 
-public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.Callback, ExpandHelper.Callback {
+public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.Callback, ExpandHelper.Callback,
+        ViewTreeObserver.OnComputeInternalInsetsListener {
     private static final String TAG = "HeadsUpNotificationView";
     private static final boolean DEBUG = false;
     private static final boolean SPEW = DEBUG;
 
     Rect mTmpRect = new Rect();
+    int[] mTmpTwoArray = new int[2];
 
     private final int mTouchSensitivityDelay;
+    private final float mMaxAlpha = 0.95f;
     private SwipeHelper mSwipeHelper;
     private EdgeSwipeHelper mEdgeSwipeHelper;
 
@@ -87,8 +92,9 @@ public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.
             }
             mContentHolder.setX(0);
             mContentHolder.setVisibility(View.VISIBLE);
-            mContentHolder.setAlpha(1f);
+            mContentHolder.setAlpha(mMaxAlpha);
             mContentHolder.addView(mHeadsUp.row);
+
             mSwipeHelper.snapChild(mContentHolder, 1f);
             mStartTouchTime = System.currentTimeMillis() + mTouchSensitivityDelay;
         }
@@ -99,32 +105,6 @@ public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.
         return mHeadsUp == null || mHeadsUp.notification.isClearable();
     }
 
-    public void setMargin(int notificationPanelMarginPx) {
-        if (SPEW) Log.v(TAG, "setMargin() " + notificationPanelMarginPx);
-        if (mContentHolder != null &&
-                mContentHolder.getLayoutParams() instanceof FrameLayout.LayoutParams) {
-            FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mContentHolder.getLayoutParams();
-            lp.setMarginStart(notificationPanelMarginPx);
-            mContentHolder.setLayoutParams(lp);
-        }
-    }
-
-    // LinearLayout methods
-
-    @Override
-    public void onDraw(android.graphics.Canvas c) {
-        super.onDraw(c);
-        if (DEBUG) {
-            //Log.d(TAG, "onDraw: canvas height: " + c.getHeight() + "px; measured height: "
-            //        + getMeasuredHeight() + "px");
-            c.save();
-            c.clipRect(6, 6, c.getWidth() - 6, getMeasuredHeight() - 6,
-                    android.graphics.Region.Op.DIFFERENCE);
-            c.drawColor(0xFFcc00cc);
-            c.restore();
-        }
-    }
-
     // ViewGroup methods
 
     @Override
@@ -134,6 +114,7 @@ public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.
         float pagingTouchSlop = viewConfiguration.getScaledPagingTouchSlop();
         float touchSlop = viewConfiguration.getScaledTouchSlop();
         mSwipeHelper = new SwipeHelper(SwipeHelper.X, this, densityScale, pagingTouchSlop);
+        mSwipeHelper.setMaxAlpha(mMaxAlpha);
         mEdgeSwipeHelper = new EdgeSwipeHelper(touchSlop);
 
         int minHeight = getResources().getDimensionPixelSize(R.dimen.notification_min_height);
@@ -146,6 +127,8 @@ public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.
             // whoops, we're on already!
             setNotification(mHeadsUp);
         }
+
+        getViewTreeObserver().addOnComputeInternalInsetsListener(this);
     }
 
     @Override
@@ -163,6 +146,20 @@ public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.
     // View methods
 
     @Override
+    public void onDraw(android.graphics.Canvas c) {
+        super.onDraw(c);
+        if (DEBUG) {
+            //Log.d(TAG, "onDraw: canvas height: " + c.getHeight() + "px; measured height: "
+            //        + getMeasuredHeight() + "px");
+            c.save();
+            c.clipRect(6, 6, c.getWidth() - 6, getMeasuredHeight() - 6,
+                    android.graphics.Region.Op.DIFFERENCE);
+            c.drawColor(0xFFcc00cc);
+            c.restore();
+        }
+    }
+
+    @Override
     public boolean onTouchEvent(MotionEvent ev) {
         if (System.currentTimeMillis() < mStartTouchTime) {
             return false;
@@ -183,6 +180,14 @@ public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.
         mSwipeHelper.setPagingTouchSlop(pagingTouchSlop);
     }
 
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        super.onLayout(changed, left, top, right, bottom);
+        Outline o = new Outline();
+        o.setRect(0, 0, mContentHolder.getWidth(), mContentHolder.getHeight());
+        mContentHolder.setOutline(o);
+    }
+
     // ExpandHelper.Callback methods
 
     @Override
@@ -233,7 +238,7 @@ public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.
 
     @Override
     public void onDragCancelled(View v) {
-        mContentHolder.setAlpha(1f); // sometimes this isn't quite reset
+        mContentHolder.setAlpha(mMaxAlpha); // sometimes this isn't quite reset
     }
 
     @Override
@@ -250,6 +255,16 @@ public class HeadsUpNotificationView extends FrameLayout implements SwipeHelper.
         return mContentHolder;
     }
 
+    @Override
+    public void onComputeInternalInsets(ViewTreeObserver.InternalInsetsInfo info) {
+        mContentHolder.getLocationOnScreen(mTmpTwoArray);
+
+        info.setTouchableInsets(ViewTreeObserver.InternalInsetsInfo.TOUCHABLE_INSETS_REGION);
+        info.touchableRegion.set(mTmpTwoArray[0], mTmpTwoArray[1],
+                mTmpTwoArray[0] + mContentHolder.getWidth(),
+                mTmpTwoArray[1] + mContentHolder.getHeight());
+    }
+
     private class EdgeSwipeHelper implements Gefingerpoken {
         private static final boolean DEBUG_EDGE_SWIPE = false;
         private final float mTouchSlop;