Fade notifications when exiting dozing

Bug: 18146441
Change-Id: Ifa0cbb8157c65768c3a0c584166ca88c3016b730

16 files changed, 592 insertions, 88 deletions

diff --git a/packages/SystemUI/res/layout/status_bar_notification_keyguard_overflow.xml b/packages/SystemUI/res/layout/status_bar_notification_keyguard_overflow.xml
index ef85847..4526af5 100644
--- a/packages/SystemUI/res/layout/status_bar_notification_keyguard_overflow.xml
+++ b/packages/SystemUI/res/layout/status_bar_notification_keyguard_overflow.xml
@@ -32,6 +32,7 @@
         />
 
     <LinearLayout
+        android:id="@+id/content"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
         <TextView
diff --git a/packages/SystemUI/src/com/android/systemui/ViewInvertHelper.java b/packages/SystemUI/src/com/android/systemui/ViewInvertHelper.java
new file mode 100644
index 0000000..2ff8f8a
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/ViewInvertHelper.java
@@ -0,0 +1,101 @@
+/*
+ * 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
+ */
+
+package com.android.systemui;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ValueAnimator;
+import android.graphics.ColorMatrix;
+import android.graphics.ColorMatrixColorFilter;
+import android.graphics.Paint;
+import android.view.View;
+import android.view.animation.AnimationUtils;
+import android.view.animation.Interpolator;
+
+import com.android.systemui.statusbar.phone.NotificationPanelView;
+
+/**
+ * Helper to invert the colors of views and fade between the states.
+ */
+public class ViewInvertHelper {
+
+    private final Paint mDarkPaint = new Paint();
+    private final Interpolator mLinearOutSlowInInterpolator;
+    private final View mTarget;
+    private final ColorMatrix mMatrix = new ColorMatrix();
+    private final ColorMatrix mGrayscaleMatrix = new ColorMatrix();
+    private final long mFadeDuration;
+
+    public ViewInvertHelper(View target, long fadeDuration) {
+        mTarget = target;
+        mLinearOutSlowInInterpolator = AnimationUtils.loadInterpolator(mTarget.getContext(),
+                android.R.interpolator.linear_out_slow_in);
+        mFadeDuration = fadeDuration;
+    }
+
+    public void fade(final boolean invert, long delay) {
+        float startIntensity = invert ? 0f : 1f;
+        float endIntensity = invert ? 1f : 0f;
+        ValueAnimator animator = ValueAnimator.ofFloat(startIntensity, endIntensity);
+        animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
+            @Override
+            public void onAnimationUpdate(ValueAnimator animation) {
+                updateInvertPaint((Float) animation.getAnimatedValue());
+                mTarget.setLayerType(View.LAYER_TYPE_HARDWARE, mDarkPaint);
+            }
+        });
+        animator.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                if (!invert) {
+                    mTarget.setLayerType(View.LAYER_TYPE_NONE, null);
+                }
+            }
+        });
+        animator.setDuration(mFadeDuration);
+        animator.setInterpolator(mLinearOutSlowInInterpolator);
+        animator.setStartDelay(delay);
+        animator.start();
+    }
+
+    public void update(boolean invert) {
+        if (invert) {
+            updateInvertPaint(1f);
+            mTarget.setLayerType(View.LAYER_TYPE_HARDWARE, mDarkPaint);
+        } else {
+            mTarget.setLayerType(View.LAYER_TYPE_NONE, null);
+        }
+    }
+
+    public View getTarget() {
+        return mTarget;
+    }
+
+    private void updateInvertPaint(float intensity) {
+        float components = 1 - 2 * intensity;
+        final float[] invert = {
+                components, 0f,         0f,         0f, 255f * intensity,
+                0f,         components, 0f,         0f, 255f * intensity,
+                0f,         0f,         components, 0f, 255f * intensity,
+                0f,         0f,         0f,         1f, 0f
+        };
+        mMatrix.set(invert);
+        mGrayscaleMatrix.setSaturation(1 - intensity);
+        mMatrix.preConcat(mGrayscaleMatrix);
+        mDarkPaint.setColorFilter(new ColorMatrixColorFilter(mMatrix));
+    }
+}
\ No newline at end of file
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java b/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java
index 02b9378..7b60307 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java
@@ -43,6 +43,7 @@ import android.view.animation.LinearInterpolator;
 import android.view.animation.PathInterpolator;
 
 import com.android.systemui.R;
+import com.android.systemui.statusbar.phone.NotificationPanelView;
 
 /**
  * Base class for both {@link ExpandableNotificationRow} and {@link NotificationOverflowContainer}
@@ -53,6 +54,7 @@ public abstract class ActivatableNotificationView extends ExpandableOutlineView
     private static final long DOUBLETAP_TIMEOUT_MS = 1200;
     private static final int BACKGROUND_ANIMATION_LENGTH_MS = 220;
     private static final int ACTIVATE_ANIMATION_LENGTH = 220;
+    private static final int DARK_ANIMATION_LENGTH = 170;
 
     /**
      * The amount of width, which is kept in the end when performing a disappear animation (also
@@ -84,6 +86,11 @@ public abstract class ActivatableNotificationView extends ExpandableOutlineView
      */
     private static final float VERTICAL_ANIMATION_START = 1.0f;
 
+    /**
+     * Scale for the background to animate from when exiting dark mode.
+     */
+    private static final float DARK_EXIT_SCALE_START = 0.93f;
+
     private static final Interpolator ACTIVATE_INVERSE_INTERPOLATOR
             = new PathInterpolator(0.6f, 0, 0.5f, 1);
     private static final Interpolator ACTIVATE_INVERSE_ALPHA_INTERPOLATOR
@@ -94,7 +101,6 @@ public abstract class ActivatableNotificationView extends ExpandableOutlineView
 
     private boolean mDimmed;
     private boolean mDark;
-    private final Paint mDarkPaint = createDarkPaint();
 
     private int mBgTint = 0;
     private final int mRoundedRectCornerRadius;
@@ -332,40 +338,32 @@ public abstract class ActivatableNotificationView extends ExpandableOutlineView
         if (mDimmed != dimmed) {
             mDimmed = dimmed;
             if (fade) {
-                fadeBackground();
+                fadeDimmedBackground();
             } else {
                 updateBackground();
             }
         }
     }
 
-    public void setDark(boolean dark, boolean fade) {
-        // TODO implement fade
-        if (mDark != dark) {
-            mDark = dark;
-            if (mDark) {
-                setLayerType(View.LAYER_TYPE_HARDWARE, mDarkPaint);
+    public void setDark(boolean dark, boolean fade, long delay) {
+        super.setDark(dark, fade, delay);
+        if (mDark == dark) {
+            return;
+        }
+        mDark = dark;
+        if (!dark && fade) {
+            if (mActivated) {
+                mBackgroundDimmed.setVisibility(View.VISIBLE);
+                mBackgroundNormal.setVisibility(View.VISIBLE);
             } else {
-                setLayerType(View.LAYER_TYPE_NONE, null);
+                mBackgroundDimmed.setVisibility(View.VISIBLE);
+                mBackgroundNormal.setVisibility(View.INVISIBLE);
             }
+            fadeDarkToDimmed(delay);
+        } else {
+            updateBackground();
         }
-    }
-
-    private static Paint createDarkPaint() {
-        final Paint p = new Paint();
-        final float[] invert = {
-            -1f,  0f,  0f, 1f, 1f,
-             0f, -1f,  0f, 1f, 1f,
-             0f,  0f, -1f, 1f, 1f,
-             0f,  0f,  0f, 1f, 0f
-        };
-        final ColorMatrix m = new ColorMatrix(invert);
-        final ColorMatrix grayscale = new ColorMatrix();
-        grayscale.setSaturation(0);
-        m.preConcat(grayscale);
-        p.setColorFilter(new ColorMatrixColorFilter(m));
-        return p;
-    }
+     }
 
     public void setShowingLegacyBackground(boolean showing) {
         mShowingLegacyBackground = showing;
@@ -402,7 +400,39 @@ public abstract class ActivatableNotificationView extends ExpandableOutlineView
         mBackgroundNormal.setRippleColor(rippleColor);
     }
 
-    private void fadeBackground() {
+    /**
+     * Fades the dimmed background when exiting dark mode.
+     */
+    private void fadeDarkToDimmed(long delay) {
+        mBackgroundDimmed.setAlpha(0f);
+        mBackgroundDimmed.setPivotX(mBackgroundDimmed.getWidth() / 2f);
+        mBackgroundDimmed.setPivotY(getActualHeight() / 2f);
+        mBackgroundDimmed.setScaleX(DARK_EXIT_SCALE_START);
+        mBackgroundDimmed.setScaleY(DARK_EXIT_SCALE_START);
+        mBackgroundDimmed.animate()
+                .alpha(1f)
+                .scaleX(1f)
+                .scaleY(1f)
+                .setDuration(DARK_ANIMATION_LENGTH)
+                .setStartDelay(delay)
+                .setInterpolator(mLinearOutSlowInInterpolator)
+                .setListener(new AnimatorListenerAdapter() {
+                    @Override
+                    public void onAnimationCancel(Animator animation) {
+                        // Jump state if we are cancelled
+                        mBackgroundDimmed.setScaleX(1f);
+                        mBackgroundDimmed.setScaleY(1f);
+                        mBackgroundDimmed.setAlpha(1f);
+                    }
+                })
+                .start();
+    }
+
+    /**
+     * Fades the background when the dimmed state changes.
+     */
+    private void fadeDimmedBackground() {
+        mBackgroundDimmed.animate().cancel();
         mBackgroundNormal.animate().cancel();
         if (mDimmed) {
             mBackgroundDimmed.setVisibility(View.VISIBLE);
@@ -443,11 +473,14 @@ public abstract class ActivatableNotificationView extends ExpandableOutlineView
     }
 
     private void updateBackground() {
-        if (mDimmed) {
+        cancelFadeAnimations();
+        if (mDark) {
+            mBackgroundDimmed.setVisibility(View.INVISIBLE);
+            mBackgroundNormal.setVisibility(View.INVISIBLE);
+        } else if (mDimmed) {
             mBackgroundDimmed.setVisibility(View.VISIBLE);
             mBackgroundNormal.setVisibility(View.INVISIBLE);
         } else {
-            cancelFadeAnimations();
             mBackgroundDimmed.setVisibility(View.INVISIBLE);
             mBackgroundNormal.setVisibility(View.VISIBLE);
             mBackgroundNormal.setAlpha(1f);
@@ -459,6 +492,7 @@ public abstract class ActivatableNotificationView extends ExpandableOutlineView
         if (mBackgroundAnimator != null) {
             mBackgroundAnimator.cancel();
         }
+        mBackgroundDimmed.animate().cancel();
         mBackgroundNormal.animate().cancel();
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java
index 7345440..8ad8406 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java
@@ -207,11 +207,11 @@ public class ExpandableNotificationRow extends ActivatableNotificationView {
     }
 
     @Override
-    public void setDark(boolean dark, boolean fade) {
-        super.setDark(dark, fade);
+    public void setDark(boolean dark, boolean fade, long delay) {
+        super.setDark(dark, fade, delay);
         final NotificationContentView showing = getShowingLayout();
         if (showing != null) {
-            showing.setDark(dark, fade);
+            showing.setDark(dark, fade, delay);
         }
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java
index bf1e78e..ebc663c 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableView.java
@@ -39,6 +39,7 @@ public abstract class ExpandableView extends FrameLayout {
     private int mActualHeight;
     protected int mClipTopAmount;
     private boolean mActualHeightInitialized;
+    private boolean mDark;
     private ArrayList<View> mMatchParentViews = new ArrayList<View>();
 
     public ExpandableView(Context context, AttributeSet attrs) {
@@ -185,8 +186,14 @@ public abstract class ExpandableView extends FrameLayout {
      *
      * @param dark Whether the notification should be dark.
      * @param fade Whether an animation should be played to change the state.
+     * @param delay If fading, the delay of the animation.
      */
-    public void setDark(boolean dark, boolean fade) {
+    public void setDark(boolean dark, boolean fade, long delay) {
+        mDark = dark;
+    }
+
+    public boolean isDark() {
+        return mDark;
     }
 
     /**
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationContentView.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationContentView.java
index 99214a0..582b8d7 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationContentView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationContentView.java
@@ -42,14 +42,14 @@ import com.android.systemui.R;
 public class NotificationContentView extends FrameLayout {
 
     private static final long ANIMATION_DURATION_LENGTH = 170;
-    private static final Paint INVERT_PAINT = createInvertPaint();
-    private static final ColorFilter NO_COLOR_FILTER = new ColorFilter();
 
     private final Rect mClipBounds = new Rect();
 
     private View mContractedChild;
     private View mExpandedChild;
 
+    private NotificationViewWrapper mContractedWrapper;
+
     private int mSmallHeight;
     private int mClipTopAmount;
     private int mActualHeight;
@@ -122,6 +122,7 @@ public class NotificationContentView extends FrameLayout {
         sanitizeContractedLayoutParams(child);
         addView(child);
         mContractedChild = child;
+        mContractedWrapper = NotificationViewWrapper.wrap(getContext(), child);
         selectLayout(false /* animate */, true /* force */);
     }
 
@@ -249,38 +250,10 @@ public class NotificationContentView extends FrameLayout {
         return mExpandedChild != null;
     }
 
-    public void setDark(boolean dark, boolean fade) {
+    public void setDark(boolean dark, boolean fade, long delay) {
         if (mDark == dark || mContractedChild == null) return;
         mDark = dark;
-        setImageViewDark(dark, fade, com.android.internal.R.id.right_icon);
-        setImageViewDark(dark, fade, com.android.internal.R.id.icon);
-    }
-
-    private void setImageViewDark(boolean dark, boolean fade, int imageViewId) {
-        // TODO: implement fade
-        final ImageView v = (ImageView) mContractedChild.findViewById(imageViewId);
-        if (v == null) return;
-        final Drawable d = v.getBackground();
-        if (dark) {
-            v.setLayerType(LAYER_TYPE_HARDWARE, INVERT_PAINT);
-            if (d != null) {
-                v.setTag(R.id.doze_saved_filter_tag, d.getColorFilter() != null ? d.getColorFilter()
-                        : NO_COLOR_FILTER);
-                d.setColorFilter(getResources().getColor(R.color.doze_small_icon_background_color),
-                        PorterDuff.Mode.SRC_ATOP);
-                v.setImageAlpha(getResources().getInteger(R.integer.doze_small_icon_alpha));
-            }
-        } else {
-            v.setLayerType(LAYER_TYPE_NONE, null);
-            if (d != null)  {
-                final ColorFilter filter = (ColorFilter) v.getTag(R.id.doze_saved_filter_tag);
-                if (filter != null) {
-                    d.setColorFilter(filter == NO_COLOR_FILTER ? null : filter);
-                    v.setTag(R.id.doze_saved_filter_tag, null);
-                }
-                v.setImageAlpha(0xff);
-            }
-        }
+        mContractedWrapper.setDark(dark, fade, delay);
     }
 
     @Override
@@ -290,16 +263,4 @@ public class NotificationContentView extends FrameLayout {
         // layout, and saves us some layers.
         return false;
     }
-
-    private static Paint createInvertPaint() {
-        final Paint p = new Paint();
-        final float[] invert = {
-            -1f,  0f,  0f, 1f, 1f,
-             0f, -1f,  0f, 1f, 1f,
-             0f,  0f, -1f, 1f, 1f,
-             0f,  0f,  0f, 1f, 0f
-        };
-        p.setColorFilter(new ColorMatrixColorFilter(new ColorMatrix(invert)));
-        return p;
-    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationCustomViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationCustomViewWrapper.java
new file mode 100644
index 0000000..045be3e
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationCustomViewWrapper.java
@@ -0,0 +1,48 @@
+/*
+ * 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
+ */
+
+package com.android.systemui.statusbar;
+
+import android.view.View;
+
+import com.android.systemui.ViewInvertHelper;
+import com.android.systemui.statusbar.phone.NotificationPanelView;
+
+/**
+ * Wraps a notification containing a custom view.
+ */
+public class NotificationCustomViewWrapper extends NotificationViewWrapper {
+
+    private final ViewInvertHelper mInvertHelper;
+    private boolean mDark;
+
+    protected NotificationCustomViewWrapper(View view) {
+        super(view);
+        mInvertHelper = new ViewInvertHelper(view, NotificationPanelView.DOZE_ANIMATION_DURATION);
+    }
+
+    @Override
+    public void setDark(boolean dark, boolean fade, long delay) {
+        if (mDark != dark) {
+            mDark = dark;
+            if (fade) {
+                mInvertHelper.fade(dark, delay);
+            } else {
+                mInvertHelper.update(dark);
+            }
+        }
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationMediaViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationMediaViewWrapper.java
new file mode 100644
index 0000000..8f63a79
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationMediaViewWrapper.java
@@ -0,0 +1,42 @@
+/*
+ * 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
+ */
+
+package com.android.systemui.statusbar;
+
+import android.content.Context;
+import android.view.View;
+
+/**
+ * Wraps a media notification.
+ */
+public class NotificationMediaViewWrapper extends NotificationTemplateViewWrapper {
+
+    private boolean mDark;
+
+    protected NotificationMediaViewWrapper(Context ctx, View view) {
+        super(ctx, view);
+    }
+
+    @Override
+    public void setDark(boolean dark, boolean fade, long delay) {
+        if (mDark != dark) {
+            mDark = dark;
+
+            // Only update the large icon, because the rest is already inverted.
+            setPictureGrayscale(dark, fade, delay);
+        }
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationOverflowContainer.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationOverflowContainer.java
index edfd205..bfa3aa5 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationOverflowContainer.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationOverflowContainer.java
@@ -21,6 +21,8 @@ import android.util.AttributeSet;
 import android.widget.TextView;
 
 import com.android.systemui.R;
+import com.android.systemui.ViewInvertHelper;
+import com.android.systemui.statusbar.phone.NotificationPanelView;
 
 /**
  * Container view for overflowing notification icons on Keyguard.
@@ -28,6 +30,8 @@ import com.android.systemui.R;
 public class NotificationOverflowContainer extends ActivatableNotificationView {
 
     private NotificationOverflowIconsView mIconsView;
+    private ViewInvertHelper mViewInvertHelper;
+    private boolean mDark;
 
     public NotificationOverflowContainer(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -39,6 +43,20 @@ public class NotificationOverflowContainer extends ActivatableNotificationView {
         mIconsView = (NotificationOverflowIconsView) findViewById(R.id.overflow_icons_view);
         mIconsView.setMoreText((TextView) findViewById(R.id.more_text));
         mIconsView.setOverflowIndicator(findViewById(R.id.more_icon_overflow));
+        mViewInvertHelper = new ViewInvertHelper(findViewById(R.id.content),
+                NotificationPanelView.DOZE_ANIMATION_DURATION);
+    }
+
+    @Override
+    public void setDark(boolean dark, boolean fade, long delay) {
+        super.setDark(dark, fade, delay);
+        if (mDark == dark) return;
+        mDark = dark;
+        if (fade) {
+            mViewInvertHelper.fade(dark, delay);
+        } else {
+            mViewInvertHelper.update(dark);
+        }
     }
 
     public NotificationOverflowIconsView getIconsView() {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationTemplateViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationTemplateViewWrapper.java
new file mode 100644
index 0000000..8dc14b0
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationTemplateViewWrapper.java
@@ -0,0 +1,223 @@
+/*
+ * 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
+ */
+
+package com.android.systemui.statusbar;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ValueAnimator;
+import android.content.Context;
+import android.graphics.Color;
+import android.graphics.ColorFilter;
+import android.graphics.ColorMatrix;
+import android.graphics.ColorMatrixColorFilter;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
+import android.view.View;
+import android.view.animation.AnimationUtils;
+import android.view.animation.Interpolator;
+import android.widget.ImageView;
+
+import com.android.systemui.R;
+import com.android.systemui.ViewInvertHelper;
+import com.android.systemui.statusbar.phone.NotificationPanelView;
+
+/**
+ * Wraps a notification view inflated from a template.
+ */
+public class NotificationTemplateViewWrapper extends NotificationViewWrapper {
+
+    private final ViewInvertHelper mInvertHelper;
+    private final ImageView mIcon;
+    protected final ImageView mPicture;
+    private final ColorMatrix mGrayscaleColorMatrix = new ColorMatrix();
+    private final PorterDuffColorFilter mIconColorFilter = new PorterDuffColorFilter(
+            0, PorterDuff.Mode.SRC_ATOP);
+    private final int mIconDarkAlpha;
+    private final int mIconBackgroundColor;
+    private final int mIconBackgroundDarkColor;
+    private final Interpolator mLinearOutSlowInInterpolator;
+
+    private boolean mDark;
+
+    protected NotificationTemplateViewWrapper(Context ctx, View view) {
+        super(view);
+        mIconDarkAlpha = ctx.getResources().getInteger(R.integer.doze_small_icon_alpha);
+        mIconBackgroundDarkColor =
+                ctx.getResources().getColor(R.color.doze_small_icon_background_color);
+        mLinearOutSlowInInterpolator = AnimationUtils.loadInterpolator(ctx,
+                android.R.interpolator.linear_out_slow_in);
+        View mainColumn = view.findViewById(com.android.internal.R.id.notification_main_column);
+        mInvertHelper = mainColumn != null
+                ? new ViewInvertHelper(mainColumn, NotificationPanelView.DOZE_ANIMATION_DURATION)
+                : null;
+        ImageView largeIcon = (ImageView) view.findViewById(com.android.internal.R.id.icon);
+        ImageView rightIcon = (ImageView) view.findViewById(com.android.internal.R.id.right_icon);
+        mIcon = resolveIcon(largeIcon, rightIcon);
+        mPicture = resolvePicture(largeIcon);
+        mIconBackgroundColor = resolveBackgroundColor(mIcon);
+    }
+
+    private ImageView resolveIcon(ImageView largeIcon, ImageView rightIcon) {
+        return largeIcon != null && largeIcon.getBackground() != null ? largeIcon
+                : rightIcon != null && rightIcon.getBackground() != null ? rightIcon
+                : null;
+    }
+
+    private ImageView resolvePicture(ImageView largeIcon) {
+        return largeIcon != null && largeIcon.getBackground() == null
+                ? largeIcon
+                : null;
+    }
+
+    private int resolveBackgroundColor(ImageView icon) {
+        if (icon != null && icon.getBackground() != null) {
+            ColorFilter filter = icon.getBackground().getColorFilter();
+            if (filter instanceof PorterDuffColorFilter) {
+                return ((PorterDuffColorFilter) filter).getColor();
+            }
+        }
+        return 0;
+    }
+
+    @Override
+    public void setDark(boolean dark, boolean fade, long delay) {
+        if (mDark != dark) {
+            mDark = dark;
+            if (mInvertHelper != null) {
+                if (fade) {
+                    mInvertHelper.fade(dark, delay);
+                } else {
+                    mInvertHelper.update(dark);
+                }
+            }
+            if (mIcon != null) {
+                if (fade) {
+                    fadeIconColorFilter(mIcon, dark, delay);
+                    fadeIconAlpha(mIcon, dark, delay);
+                } else {
+                    updateIconColorFilter(mIcon, dark);
+                    updateIconAlpha(mIcon, dark);
+                }
+            }
+            setPictureGrayscale(dark, fade, delay);
+        }
+    }
+
+    protected void setPictureGrayscale(boolean grayscale, boolean fade, long delay) {
+        if (mPicture != null) {
+            if (fade) {
+                fadeGrayscale(mPicture, grayscale, delay);
+            } else {
+                updateGrayscale(mPicture, grayscale);
+            }
+        }
+    }
+
+    private void startIntensityAnimation(ValueAnimator.AnimatorUpdateListener updateListener,
+            boolean dark, long delay, Animator.AnimatorListener listener) {
+        float startIntensity = dark ? 0f : 1f;
+        float endIntensity = dark ? 1f : 0f;
+        ValueAnimator animator = ValueAnimator.ofFloat(startIntensity, endIntensity);
+        animator.addUpdateListener(updateListener);
+        animator.setDuration(NotificationPanelView.DOZE_ANIMATION_DURATION);
+        animator.setInterpolator(mLinearOutSlowInInterpolator);
+        animator.setStartDelay(delay);
+        if (listener != null) {
+            animator.addListener(listener);
+        }
+        animator.start();
+    }
+
+    private void fadeIconColorFilter(final ImageView target, boolean dark, long delay) {
+        startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
+            @Override
+            public void onAnimationUpdate(ValueAnimator animation) {
+                updateIconColorFilter(target, (Float) animation.getAnimatedValue());
+            }
+        }, dark, delay, null /* listener */);
+    }
+
+    private void fadeIconAlpha(final ImageView target, boolean dark, long delay) {
+        startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
+            @Override
+            public void onAnimationUpdate(ValueAnimator animation) {
+                float t = (float) animation.getAnimatedValue();
+                target.setImageAlpha((int) (255 * (1f - t) + mIconDarkAlpha * t));
+            }
+        }, dark, delay, null /* listener */);
+    }
+
+    protected void fadeGrayscale(final ImageView target, final boolean dark, long delay) {
+        startIntensityAnimation(new ValueAnimator.AnimatorUpdateListener() {
+            @Override
+            public void onAnimationUpdate(ValueAnimator animation) {
+                updateGrayscaleMatrix((float) animation.getAnimatedValue());
+                target.setColorFilter(new ColorMatrixColorFilter(mGrayscaleColorMatrix));
+            }
+        }, dark, delay, new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                if (!dark) {
+                    target.setColorFilter(null);
+                }
+            }
+        });
+    }
+
+    private void updateIconColorFilter(ImageView target, boolean dark) {
+        updateIconColorFilter(target, dark ? 1f : 0f);
+    }
+
+    private void updateIconColorFilter(ImageView target, float intensity) {
+        int color = interpolateColor(mIconBackgroundColor, mIconBackgroundDarkColor, intensity);
+        mIconColorFilter.setColor(color);
+        target.getBackground().mutate().setColorFilter(mIconColorFilter);
+    }
+
+    private void updateIconAlpha(ImageView target, boolean dark) {
+        target.setImageAlpha(dark ? mIconDarkAlpha : 255);
+    }
+
+    protected void updateGrayscale(ImageView target, boolean dark) {
+        if (dark) {
+            updateGrayscaleMatrix(1f);
+            target.setColorFilter(new ColorMatrixColorFilter(mGrayscaleColorMatrix));
+        } else {
+            target.setColorFilter(null);
+        }
+    }
+
+    private void updateGrayscaleMatrix(float intensity) {
+        mGrayscaleColorMatrix.setSaturation(1 - intensity);
+    }
+
+    private static int interpolateColor(int source, int target, float t) {
+        int aSource = Color.alpha(source);
+        int rSource = Color.red(source);
+        int gSource = Color.green(source);
+        int bSource = Color.blue(source);
+        int aTarget = Color.alpha(target);
+        int rTarget = Color.red(target);
+        int gTarget = Color.green(target);
+        int bTarget = Color.blue(target);
+        return Color.argb(
+                (int) (aSource * (1f - t) + aTarget * t),
+                (int) (rSource * (1f - t) + rTarget * t),
+                (int) (gSource * (1f - t) + gTarget * t),
+                (int) (bSource * (1f - t) + bTarget * t));
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationViewWrapper.java
new file mode 100644
index 0000000..0a02573
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationViewWrapper.java
@@ -0,0 +1,56 @@
+/*
+ * 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
+ */
+
+package com.android.systemui.statusbar;
+
+import android.content.Context;
+import android.view.View;
+
+import com.android.internal.R;
+
+/**
+ * Wraps the actual notification content view; used to implement behaviors which are different for
+ * the individual templates and custom views.
+ */
+public abstract class NotificationViewWrapper {
+
+    protected final View mView;
+
+    public static NotificationViewWrapper wrap(Context ctx, View v) {
+
+        // TODO: Figure out a better way to find out which template the view is.
+        if (v.findViewById(com.android.internal.R.id.media_actions) != null) {
+            return new NotificationMediaViewWrapper(ctx, v);
+        } else if (v.getId() == com.android.internal.R.id.status_bar_latest_event_content) {
+            return new NotificationTemplateViewWrapper(ctx, v);
+        } else {
+            return new NotificationCustomViewWrapper(v);
+        }
+    }
+
+    protected NotificationViewWrapper(View view) {
+        mView = view;
+    }
+
+    /**
+     * In dark mode, we draw as little as possible, assuming a black background.
+     *
+     * @param dark whether we should display ourselves in dark mode
+     * @param fade whether to animate the transition if the mode changes
+     * @param delay if fading, the delay of the animation
+     */
+    public abstract void setDark(boolean dark, boolean fade, long delay);
+}
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 f5c994a..709a074 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
@@ -3689,14 +3689,11 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
         if (mState != StatusBarState.KEYGUARD && !mNotificationPanel.isDozing()) {
             return;
         }
-        mNotificationPanel.setDozing(mDozing, mDozeScrimController.isPulsing() /*animate*/);
-        if (mDozing) {
-            mStackScroller.setDark(true, false /*animate*/);
-        } else {
-            mStackScroller.setDark(false, false /*animate*/);
-        }
+        boolean animate = !mDozing && mDozeScrimController.isPulsing();
+        mNotificationPanel.setDozing(mDozing, animate);
+        mStackScroller.setDark(mDozing, animate);
         mScrimController.setDozing(mDozing);
-        mDozeScrimController.setDozing(mDozing, mDozeScrimController.isPulsing() /* animate */);
+        mDozeScrimController.setDozing(mDozing, animate);
     }
 
     public void updateStackScrollerState(boolean goingToFullShade) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/AnimationFilter.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/AnimationFilter.java
index 3c93b19..3d4cda6 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/AnimationFilter.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/AnimationFilter.java
@@ -33,6 +33,7 @@ public class AnimationFilter {
     boolean animateHideSensitive;
     boolean hasDelays;
     boolean hasGoToFullShadeEvent;
+    boolean hasDarkEvent;
 
     public AnimationFilter animateAlpha() {
         animateAlpha = true;
@@ -98,6 +99,10 @@ public class AnimationFilter {
                     NotificationStackScrollLayout.AnimationEvent.ANIMATION_TYPE_GO_TO_FULL_SHADE) {
                 hasGoToFullShadeEvent = true;
             }
+            if (events.get(i).animationType ==
+                    NotificationStackScrollLayout.AnimationEvent.ANIMATION_TYPE_DARK) {
+                hasDarkEvent = true;
+            }
         }
     }
 
@@ -126,5 +131,6 @@ public class AnimationFilter {
         animateHideSensitive = false;
         hasDelays = false;
         hasGoToFullShadeEvent = false;
+        hasDarkEvent = false;
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java
index e63be97..c5f1161 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java
@@ -2455,7 +2455,8 @@ public class NotificationStackScrollLayout extends ViewGroup
 
                 // ANIMATION_TYPE_DARK
                 new AnimationFilter()
-                        .animateDark(),
+                        .animateDark()
+                        .hasDelays(),
 
                 // ANIMATION_TYPE_GO_TO_FULL_SHADE
                 new AnimationFilter()
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollState.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollState.java
index 4611370..0b1ce8f 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollState.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollState.java
@@ -154,7 +154,7 @@ public class StackScrollState {
                 child.setDimmed(state.dimmed, false /* animate */);
 
                 // apply dark
-                child.setDark(state.dark, false /* animate */);
+                child.setDark(state.dark, false /* animate */, 0 /* delay */);
 
                 // apply hiding sensitive
                 child.setHideSensitive(
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackStateAnimator.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackStateAnimator.java
index a56440c..05077bf 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackStateAnimator.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackStateAnimator.java
@@ -46,6 +46,7 @@ public class StackStateAnimator {
     public static final int ANIMATION_DELAY_PER_ELEMENT_INTERRUPTING = 80;
     public static final int ANIMATION_DELAY_PER_ELEMENT_MANUAL = 32;
     public static final int ANIMATION_DELAY_PER_ELEMENT_GO_TO_FULL_SHADE = 48;
+    public static final int ANIMATION_DELAY_PER_ELEMENT_DARK = 24;
     private static final int DELAY_EFFECT_MAX_INDEX_DIFFERENCE = 2;
 
     private static final int TAG_ANIMATOR_TRANSLATION_Y = R.id.translation_y_animator_tag;
@@ -161,11 +162,12 @@ public class StackStateAnimator {
         boolean scaleChanging = child.getScaleX() != viewState.scale;
         boolean alphaChanging = alpha != child.getAlpha();
         boolean heightChanging = viewState.height != child.getActualHeight();
+        boolean darkChanging = viewState.dark != child.isDark();
         boolean topInsetChanging = viewState.clipTopAmount != child.getClipTopAmount();
         boolean wasAdded = mNewAddChildren.contains(child);
         boolean hasDelays = mAnimationFilter.hasDelays;
         boolean isDelayRelevant = yTranslationChanging || zTranslationChanging || scaleChanging ||
-                alphaChanging || heightChanging || topInsetChanging;
+                alphaChanging || heightChanging || topInsetChanging || darkChanging;
         boolean noAnimation = wasAdded;
         long delay = 0;
         long duration = mCurrentLength;
@@ -242,7 +244,7 @@ public class StackStateAnimator {
                 && !noAnimation);
 
         // start dark animation
-        child.setDark(viewState.dark, mAnimationFilter.animateDark && !noAnimation);
+        child.setDark(viewState.dark, mAnimationFilter.animateDark && !noAnimation, delay);
 
         // apply speed bump state
         child.setBelowSpeedBump(viewState.belowSpeedBump);
@@ -262,6 +264,9 @@ public class StackStateAnimator {
 
     private long calculateChildAnimationDelay(StackScrollState.ViewState viewState,
             StackScrollState finalState) {
+        if (mAnimationFilter.hasDarkEvent) {
+            return calculateDelayDark(viewState);
+        }
         if (mAnimationFilter.hasGoToFullShadeEvent) {
             return calculateDelayGoToFullShade(viewState);
         }
@@ -309,6 +314,10 @@ public class StackStateAnimator {
         return minDelay;
     }
 
+    private long calculateDelayDark(StackScrollState.ViewState viewState) {
+        return viewState.notGoneIndex * ANIMATION_DELAY_PER_ELEMENT_DARK;
+    }
+
     private long calculateDelayGoToFullShade(StackScrollState.ViewState viewState) {
         float index = viewState.notGoneIndex;
         index = (float) Math.pow(index, 0.7f);