Simplify and smooth notification panel animation.

Bug: 3322970
Change-Id: I3e658cfb542d605b13f6b7d935e32e5b8766078f

3 files changed, 25 insertions, 30 deletions

diff --git a/packages/SystemUI/res/layout-xlarge/status_bar_notification_panel.xml b/packages/SystemUI/res/layout-xlarge/status_bar_notification_panel.xml
index 26e045c..33dda03 100644
--- a/packages/SystemUI/res/layout-xlarge/status_bar_notification_panel.xml
+++ b/packages/SystemUI/res/layout-xlarge/status_bar_notification_panel.xml
@@ -18,20 +18,13 @@
 <com.android.systemui.statusbar.tablet.NotificationPanel
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:systemui="http://schemas.android.com/apk/res/com.android.systemui"
+    android:id="@+id/panel_root"
     android:layout_height="match_parent"
     android:layout_width="match_parent"
     android:gravity="right"
+    android:background="@drawable/notify_panel_bg_protect_tiled"
     >
 
-    <View
-        android:id="@+id/scrim"
-        android:background="@drawable/notify_panel_bg_protect_tiled"
-        android:layout_width="512dp"
-        android:layout_height="match_parent"
-        android:layout_alignParentTop="true"
-        android:layout_alignParentRight="true"
-        />
-
     <RelativeLayout
         android:id="@+id/content_parent"
         android:layout_height="wrap_content"
@@ -88,7 +81,7 @@
         android:layout_alignTop="@id/content_parent"
         android:layout_alignLeft="@id/content_parent"
         android:layout_marginLeft="100dip"
-        android:layout_marginTop="-100dip"
+        android:layout_marginTop="50dip"
         />
 
 </com.android.systemui.statusbar.tablet.NotificationPanel>
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/tablet/NotificationPanel.java b/packages/SystemUI/src/com/android/systemui/statusbar/tablet/NotificationPanel.java
index 973bff9..0d30db5 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/tablet/NotificationPanel.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/tablet/NotificationPanel.java
@@ -54,7 +54,7 @@ public class NotificationPanel extends RelativeLayout implements StatusBarPanel,
     ViewGroup mContentFrame;
     Rect mContentArea = new Rect();
     View mSettingsView;
-    View mScrim, mGlow;
+    View mGlow;
     ViewGroup mContentParent;
 
     Choreographer mChoreo = new Choreographer();
@@ -79,7 +79,6 @@ public class NotificationPanel extends RelativeLayout implements StatusBarPanel,
         mModeToggle = findViewById(R.id.mode_toggle);
         mModeToggle.setOnClickListener(this);
 
-        mScrim = findViewById(R.id.scrim);
         mGlow = findViewById(R.id.glow);
 
         mSettingsButton = (ImageView)findViewById(R.id.settings_button);
@@ -192,18 +191,21 @@ public class NotificationPanel extends RelativeLayout implements StatusBarPanel,
         AnimatorSet mContentAnim;
 
         // should group this into a multi-property animation
-        final int OPEN_DURATION = 136;
+        final int OPEN_DURATION = 250;
         final int CLOSE_DURATION = 250;
 
         // the panel will start to appear this many px from the end
-        final int HYPERSPACE_OFFRAMP = 30;
+        final int HYPERSPACE_OFFRAMP = 100;
 
         Choreographer() {
         }
 
         void createAnimation(boolean appearing) {
-            Animator bgAnim = ObjectAnimator.ofFloat(mScrim,
-                    "alpha", mScrim.getAlpha(), appearing ? 1 : 0);
+            // mVisible: previous state; appearing: new state
+            
+            View root = findViewById(R.id.panel_root);
+            Animator bgAnim = ObjectAnimator.ofInt(root.getBackground(), "alpha",
+                    mVisible ? 255 : 0, appearing ? 255 : 0);
 
             float start, end;
 
@@ -213,34 +215,33 @@ public class NotificationPanel extends RelativeLayout implements StatusBarPanel,
             if (appearing) {
                 // we want to go from near-the-top to the top, unless we're half-open in the right
                 // general vicinity
-                start = (y < HYPERSPACE_OFFRAMP)
-                    ? y
-                    : HYPERSPACE_OFFRAMP;
+                start = (y < HYPERSPACE_OFFRAMP) ? y : HYPERSPACE_OFFRAMP;
                 end = 0;
             } else {
                 start = y;
                 end = y + HYPERSPACE_OFFRAMP;
             }
-            Animator posAnim = ObjectAnimator.ofFloat(mContentParent, "translationY", start, end);
+            Animator posAnim = ObjectAnimator.ofFloat(mContentParent, "translationY",
+                    start, end);
             posAnim.setInterpolator(appearing
-                    ? new android.view.animation.DecelerateInterpolator(2.0f)
-                    : new android.view.animation.AccelerateInterpolator(2.0f));
+                    ? new android.view.animation.DecelerateInterpolator(1.0f)
+                    : new android.view.animation.AccelerateInterpolator(1.0f));
 
-            Animator glowAnim = ObjectAnimator.ofFloat(mGlow, "alpha",
-                    mGlow.getAlpha(), appearing ? 1.0f : 0.0f);
+            Animator glowAnim = ObjectAnimator.ofInt(mGlow.getBackground(), "alpha",
+                    mVisible ? 255 : 0, appearing ? 255 : 0);
             glowAnim.setInterpolator(appearing
                     ? new android.view.animation.AccelerateInterpolator(1.0f)
                     : new android.view.animation.DecelerateInterpolator(1.0f));
 
             mContentAnim = new AnimatorSet();
             mContentAnim
-                .play(ObjectAnimator.ofFloat(mContentParent, "alpha", mContentParent.getAlpha(),
-                                                                      appearing ? 1.0f : 0.0f))
-                .with(glowAnim)
+                .play(ObjectAnimator.ofFloat(mContentParent, "alpha",
+                    mContentParent.getAlpha(), appearing ? 1.0f : 0.0f))
                 .with(bgAnim)
+                .with(glowAnim)
                 .with(posAnim)
                 ;
-            mContentAnim.setDuration(appearing ? OPEN_DURATION : CLOSE_DURATION);
+            mContentAnim.setDuration((DEBUG?10:1)*(appearing ? OPEN_DURATION : CLOSE_DURATION));
             mContentAnim.addListener(this);
         }
 
@@ -250,13 +251,13 @@ public class NotificationPanel extends RelativeLayout implements StatusBarPanel,
             createAnimation(appearing);
 
             mContentParent.setLayerType(View.LAYER_TYPE_HARDWARE, null);
+            mGlow.setLayerType(View.LAYER_TYPE_HARDWARE, null);
             mContentAnim.start();
 
             mVisible = appearing;
         }
 
         void jumpTo(boolean appearing) {
-//            setBgAlpha(appearing ? 255 : 0);
             mContentParent.setTranslationY(appearing ? 0 : mPanelHeight);
         }
 
@@ -286,6 +287,7 @@ public class NotificationPanel extends RelativeLayout implements StatusBarPanel,
                 setVisibility(View.GONE);
             }
             mContentParent.setLayerType(View.LAYER_TYPE_NONE, null);
+            mGlow.setLayerType(View.LAYER_TYPE_NONE, null);
             mContentAnim = null;
         }
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java
index 6db74d1..a3a58ed 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java
@@ -189,7 +189,7 @@ public class TabletStatusBar extends StatusBar implements
         mStatusBarView.setIgnoreChildren(0, mNotificationTrigger, mNotificationPanel);
 
         WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
-                720, // ViewGroup.LayoutParams.MATCH_PARENT,
+                512, // ViewGroup.LayoutParams.MATCH_PARENT,
                 ViewGroup.LayoutParams.MATCH_PARENT,
                 WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL,
                 WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN