Better transition between excluded-from-recent applications to recents.

- Also replacing baked bezier interpolator with new quantum interpolators

Change-Id: I8928e35724c16c9603fae861b85215d25ce08819

8 files changed, 68 insertions, 130 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/recents/AlternateRecentsComponent.java b/packages/SystemUI/src/com/android/systemui/recents/AlternateRecentsComponent.java
index 3ef8316..19a1b11 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/AlternateRecentsComponent.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/AlternateRecentsComponent.java
@@ -255,15 +255,10 @@ public class AlternateRecentsComponent {
     /** Loads the first task thumbnail */
     Bitmap loadFirstTaskThumbnail() {
         SystemServicesProxy ssp = mSystemServicesProxy;
-        List<ActivityManager.RecentTaskInfo> tasks = ssp.getRecentTasks(1,
-                UserHandle.CURRENT.getIdentifier());
-        for (ActivityManager.RecentTaskInfo t : tasks) {
-            // Skip tasks in the home stack
-            if (ssp.isInHomeStack(t.persistentId)) {
-                return null;
-            }
+        List<ActivityManager.RunningTaskInfo> tasks = ssp.getRunningTasks(1);
 
-            return ssp.getTaskThumbnail(t.persistentId);
+        for (ActivityManager.RunningTaskInfo t : tasks) {
+            return ssp.getTaskThumbnail(t.id);
         }
         return null;
     }
@@ -286,17 +281,6 @@ public class AlternateRecentsComponent {
         return (tasks.size() > 1);
     }
 
-    /** Returns whether the base intent of the top task stack was launched with the flag
-     * Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS. */
-    boolean isTopTaskExcludeFromRecents(List<ActivityManager.RecentTaskInfo> tasks) {
-        if (tasks.size() > 0) {
-            ActivityManager.RecentTaskInfo t = tasks.get(0);
-            Console.log(t.baseIntent.toString());
-            return (t.baseIntent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0;
-        }
-        return false;
-    }
-
     /** Converts from the device rotation to the degree */
     float getDegreesForRotation(int value) {
         switch (value) {
@@ -416,16 +400,14 @@ public class AlternateRecentsComponent {
         }
 
         // Otherwise, Recents is not the front-most activity and we should animate into it.  If
-        // the activity at the root of the top task stack is excluded from recents, or if that
-        // task stack is in the home stack, then we just do a simple transition.  Otherwise, we
-        // animate to the rects defined by the Recents service, which can differ depending on the
-        // number of items in the list.
+        // the activity at the root of the top task stack in the home stack, then we just do a
+        // simple transition.  Otherwise, we animate to the rects defined by the Recents service,
+        // which can differ depending on the number of items in the list.
         List<ActivityManager.RecentTaskInfo> recentTasks =
-                ssp.getRecentTasks(4, UserHandle.CURRENT.getIdentifier());
+                ssp.getRecentTasks(2, UserHandle.CURRENT.getIdentifier());
         Rect taskRect = hasMultipleRecentsTask(recentTasks) ? mMultipleCountFirstTaskRect :
                 mSingleCountFirstTaskRect;
-        boolean isTaskExcludedFromRecents = isTopTaskExcludeFromRecents(recentTasks);
-        boolean useThumbnailTransition = !isTopTaskHome && !isTaskExcludedFromRecents &&
+        boolean useThumbnailTransition = !isTopTaskHome &&
                 hasValidTaskRects();
 
         if (useThumbnailTransition) {
diff --git a/packages/SystemUI/src/com/android/systemui/recents/BakedBezierInterpolator.java b/packages/SystemUI/src/com/android/systemui/recents/BakedBezierInterpolator.java
deleted file mode 100644
index 95ab8e8..0000000
--- a/packages/SystemUI/src/com/android/systemui/recents/BakedBezierInterpolator.java
+++ /dev/null
@@ -1,64 +0,0 @@
-package com.android.systemui.recents;
-
-import android.animation.TimeInterpolator;
-
-/**
- * A pre-baked bezier-curved interpolator for quantum-paper transitions.
- */
-public class BakedBezierInterpolator implements TimeInterpolator {
-    public static final BakedBezierInterpolator INSTANCE = new BakedBezierInterpolator();
-
-    /**
-     * Use the INSTANCE variable instead of instantiating.
-     */
-    private BakedBezierInterpolator() {
-        super();
-    }
-
-    /**
-     * Lookup table values.
-     * Generated using a Bezier curve from (0,0) to (1,1) with control points:
-     * P0 (0,0)
-     * P1 (0.4, 0)
-     * P2 (0.2, 1.0)
-     * P3 (1.0, 1.0)
-     *
-     * Values sampled with x at regular intervals between 0 and 1.
-     */
-    private static final float[] VALUES = new float[] {
-        0.0f, 0.0002f, 0.0009f, 0.0019f, 0.0036f, 0.0059f, 0.0086f, 0.0119f, 0.0157f, 0.0209f,
-        0.0257f, 0.0321f, 0.0392f, 0.0469f, 0.0566f, 0.0656f, 0.0768f, 0.0887f, 0.1033f, 0.1186f,
-        0.1349f, 0.1519f, 0.1696f, 0.1928f, 0.2121f, 0.237f, 0.2627f, 0.2892f, 0.3109f, 0.3386f,
-        0.3667f, 0.3952f, 0.4241f, 0.4474f, 0.4766f, 0.5f, 0.5234f, 0.5468f, 0.5701f, 0.5933f,
-        0.6134f, 0.6333f, 0.6531f, 0.6698f, 0.6891f, 0.7054f, 0.7214f, 0.7346f, 0.7502f, 0.763f,
-        0.7756f, 0.7879f, 0.8f, 0.8107f, 0.8212f, 0.8326f, 0.8415f, 0.8503f, 0.8588f, 0.8672f,
-        0.8754f, 0.8833f, 0.8911f, 0.8977f, 0.9041f, 0.9113f, 0.9165f, 0.9232f, 0.9281f, 0.9328f,
-        0.9382f, 0.9434f, 0.9476f, 0.9518f, 0.9557f, 0.9596f, 0.9632f, 0.9662f, 0.9695f, 0.9722f,
-        0.9753f, 0.9777f, 0.9805f, 0.9826f, 0.9847f, 0.9866f, 0.9884f, 0.9901f, 0.9917f, 0.9931f,
-        0.9944f, 0.9955f, 0.9964f, 0.9973f, 0.9981f, 0.9986f, 0.9992f, 0.9995f, 0.9998f, 1.0f, 1.0f
-    };
-
-    private static final float STEP_SIZE = 1.0f / (VALUES.length - 1);
-
-    @Override
-    public float getInterpolation(float input) {
-        if (input >= 1.0f) {
-            return 1.0f;
-        }
-
-        if (input <= 0f) {
-            return 0f;
-        }
-
-        int position = Math.min(
-                (int)(input * (VALUES.length - 1)),
-                VALUES.length - 2);
-
-        float quantized = position * STEP_SIZE;
-        float difference = input - quantized;
-        float weight = difference / STEP_SIZE;
-
-        return VALUES[position] + weight * (VALUES[position + 1] - VALUES[position]);
-    }
-
-}
diff --git a/packages/SystemUI/src/com/android/systemui/recents/RecentsConfiguration.java b/packages/SystemUI/src/com/android/systemui/recents/RecentsConfiguration.java
index 463cf74..9afc1cb 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/RecentsConfiguration.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/RecentsConfiguration.java
@@ -23,6 +23,8 @@ import android.content.res.Resources;
 import android.graphics.Rect;
 import android.util.DisplayMetrics;
 import android.util.TypedValue;
+import android.view.animation.AnimationUtils;
+import android.view.animation.Interpolator;
 import com.android.systemui.R;
 
 
@@ -42,6 +44,8 @@ public class RecentsConfiguration {
 
     public float animationPxMovementPerSecond;
 
+    public Interpolator defaultBezierInterpolator;
+
     public int filteringCurrentViewsMinAnimDuration;
     public int filteringNewViewsMinAnimDuration;
     public int taskBarEnterAnimDuration;
@@ -121,7 +125,6 @@ public class RecentsConfiguration {
                 res.getDimensionPixelSize(R.dimen.recents_task_view_z_increment);
         searchBarSpaceHeightPx = res.getDimensionPixelSize(R.dimen.recents_search_bar_space_height);
 
-
         taskBarViewDefaultBackgroundColor =
                 res.getColor(R.color.recents_task_bar_default_background_color);
         taskBarViewDefaultTextColor =
@@ -131,6 +134,9 @@ public class RecentsConfiguration {
         taskBarViewDarkTextColor =
                 res.getColor(R.color.recents_task_bar_dark_text_color);
 
+        defaultBezierInterpolator = AnimationUtils.loadInterpolator(context,
+                        com.android.internal.R.interpolator.fast_out_slow_in);
+
         // Update the search widget id
         SharedPreferences settings = context.getSharedPreferences(context.getPackageName(), 0);
         searchBarAppWidgetId = settings.getInt(Constants.Values.App.Key_SearchAppWidgetId, -1);
diff --git a/packages/SystemUI/src/com/android/systemui/recents/RecentsTaskLoader.java b/packages/SystemUI/src/com/android/systemui/recents/RecentsTaskLoader.java
index c64ca54..1ca0476 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/RecentsTaskLoader.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/RecentsTaskLoader.java
@@ -35,7 +35,6 @@ import com.android.systemui.recents.model.TaskStack;
 
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.Iterator;
 import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentLinkedQueue;
@@ -362,7 +361,7 @@ public class RecentsTaskLoader {
         return mSystemServicesProxy;
     }
 
-    private List<ActivityManager.RecentTaskInfo> getRecentTasks(Context context) {
+    private List<ActivityManager.RecentTaskInfo> getRecentTasks() {
         long t1 = System.currentTimeMillis();
 
         SystemServicesProxy ssp = mSystemServicesProxy;
@@ -375,23 +374,6 @@ public class RecentsTaskLoader {
         Console.log(Constants.Log.App.TaskDataLoader,
                 "[RecentsTaskLoader|tasks]", "" + tasks.size());
 
-        // Remove home/recents tasks
-        Iterator<ActivityManager.RecentTaskInfo> iter = tasks.iterator();
-        while (iter.hasNext()) {
-            ActivityManager.RecentTaskInfo t = iter.next();
-
-            // Skip tasks in the home stack
-            if (ssp.isInHomeStack(t.persistentId)) {
-                iter.remove();
-                continue;
-            }
-            // Skip tasks from this Recents package
-            if (t.baseIntent.getComponent().getPackageName().equals(context.getPackageName())) {
-                iter.remove();
-                continue;
-            }
-        }
-
         return tasks;
     }
 
@@ -408,7 +390,7 @@ public class RecentsTaskLoader {
 
         // Get the recent tasks
         SystemServicesProxy ssp = mSystemServicesProxy;
-        List<ActivityManager.RecentTaskInfo> tasks = getRecentTasks(context);
+        List<ActivityManager.RecentTaskInfo> tasks = getRecentTasks();
 
         // Add each task to the task stack
         t1 = System.currentTimeMillis();
diff --git a/packages/SystemUI/src/com/android/systemui/recents/SystemServicesProxy.java b/packages/SystemUI/src/com/android/systemui/recents/SystemServicesProxy.java
index 0d3ee38..8d82883 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/SystemServicesProxy.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/SystemServicesProxy.java
@@ -30,7 +30,6 @@ import android.content.pm.ActivityInfo;
 import android.content.pm.IPackageManager;
 import android.content.pm.PackageManager;
 import android.graphics.Bitmap;
-import android.graphics.Rect;
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
@@ -40,6 +39,7 @@ import android.os.UserManager;
 import android.util.Pair;
 
 import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Random;
 
@@ -54,7 +54,7 @@ public class SystemServicesProxy {
     IPackageManager mIpm;
     UserManager mUm;
     SearchManager mSm;
-    String mPackage;
+    String mRecentsPackage;
     ComponentName mAssistComponent;
 
     Bitmap mDummyIcon;
@@ -67,7 +67,7 @@ public class SystemServicesProxy {
         mUm = (UserManager) context.getSystemService(Context.USER_SERVICE);
         mIpm = AppGlobals.getPackageManager();
         mSm = (SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
-        mPackage = context.getPackageName();
+        mRecentsPackage = context.getPackageName();
 
         // Resolve the assist intent
         Intent assist = mSm.getAssistIntent(context, false);
@@ -83,14 +83,14 @@ public class SystemServicesProxy {
     }
 
     /** Returns a list of the recents tasks */
-    public List<ActivityManager.RecentTaskInfo> getRecentTasks(int numTasks, int userId) {
+    public List<ActivityManager.RecentTaskInfo> getRecentTasks(int numLatestTasks, int userId) {
         if (mAm == null) return null;
 
         // If we are mocking, then create some recent tasks
         if (Constants.DebugFlags.App.EnableSystemServicesProxy) {
             ArrayList<ActivityManager.RecentTaskInfo> tasks =
                     new ArrayList<ActivityManager.RecentTaskInfo>();
-            int count = Math.min(numTasks, Constants.DebugFlags.App.SystemServicesProxyMockTaskCount);
+            int count = Math.min(numLatestTasks, Constants.DebugFlags.App.SystemServicesProxyMockTaskCount);
             for (int i = 0; i < count; i++) {
                 // Create a dummy component name
                 int packageIndex = i % Constants.DebugFlags.App.SystemServicesProxyMockPackageCount;
@@ -114,9 +114,43 @@ public class SystemServicesProxy {
             return tasks;
         }
 
-        return mAm.getRecentTasksForUser(numTasks,
+        // Remove home/recents/excluded tasks
+        int minNumTasksToQuery = 10;
+        int numTasksToQuery = Math.max(minNumTasksToQuery, numLatestTasks);
+        List<ActivityManager.RecentTaskInfo> tasks = mAm.getRecentTasksForUser(numTasksToQuery,
                 ActivityManager.RECENT_IGNORE_UNAVAILABLE |
-                        ActivityManager.RECENT_INCLUDE_PROFILES, userId);
+                ActivityManager.RECENT_INCLUDE_PROFILES |
+                ActivityManager.RECENT_WITH_EXCLUDED, userId);
+        boolean isFirstValidTask = true;
+        Iterator<ActivityManager.RecentTaskInfo> iter = tasks.iterator();
+        while (iter.hasNext()) {
+            ActivityManager.RecentTaskInfo t = iter.next();
+
+            // NOTE: The order of these checks happens in the expected order of the traversal of the
+            // tasks
+
+            // Skip tasks from this Recents package
+            if (t.baseIntent.getComponent().getPackageName().equals(mRecentsPackage)) {
+                iter.remove();
+                continue;
+            }
+            // Check the first non-recents task, include this task even if it is marked as excluded
+            // from recents.  In other words, only remove excluded tasks if it is not the first task
+            boolean isExcluded = (t.baseIntent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS)
+                    == Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS;
+            if (isExcluded && !isFirstValidTask) {
+                iter.remove();
+                continue;
+            }
+            isFirstValidTask = false;
+            // Skip tasks in the home stack
+            if (isInHomeStack(t.persistentId)) {
+                iter.remove();
+                continue;
+            }
+        }
+
+        return tasks.subList(0, Math.min(tasks.size(), numLatestTasks));
     }
 
     /** Returns a list of the running tasks */
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskInfoView.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskInfoView.java
index c6c29a6..f1c362a 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskInfoView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskInfoView.java
@@ -30,7 +30,6 @@ import android.util.AttributeSet;
 import android.widget.Button;
 import android.widget.FrameLayout;
 import com.android.systemui.R;
-import com.android.systemui.recents.BakedBezierInterpolator;
 import com.android.systemui.recents.Constants;
 import com.android.systemui.recents.RecentsConfiguration;
 import com.android.systemui.recents.Utilities;
@@ -111,7 +110,8 @@ class TaskInfoView extends FrameLayout {
         int duration = Utilities.calculateTranslationAnimationDuration((int) mMaxClipRadius);
         mCircularClipAnimator = ObjectAnimator.ofFloat(this, "circularClipRadius", toRadius);
         mCircularClipAnimator.setDuration(duration);
-        mCircularClipAnimator.setInterpolator(BakedBezierInterpolator.INSTANCE);
+        mCircularClipAnimator.setInterpolator(
+                RecentsConfiguration.getInstance().defaultBezierInterpolator);
         mCircularClipAnimator.addListener(new AnimatorListenerAdapter() {
             @Override
             public void onAnimationEnd(Animator animation) {
@@ -143,7 +143,7 @@ class TaskInfoView extends FrameLayout {
                 .scaleX(1f)
                 .scaleY(1f)
                 .setDuration(duration)
-                .setInterpolator(BakedBezierInterpolator.INSTANCE)
+                .setInterpolator(RecentsConfiguration.getInstance().defaultBezierInterpolator)
                 .withLayer()
                 .start();
     }
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java
index 55c38a9..e0e51e3 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java
@@ -37,7 +37,6 @@ import android.view.ViewParent;
 import android.widget.FrameLayout;
 import android.widget.OverScroller;
 import com.android.systemui.R;
-import com.android.systemui.recents.BakedBezierInterpolator;
 import com.android.systemui.recents.Console;
 import com.android.systemui.recents.Constants;
 import com.android.systemui.recents.RecentsConfiguration;
@@ -338,7 +337,7 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal
         mScrollAnimator = ObjectAnimator.ofInt(this, "stackScroll", curScroll, newScroll);
         mScrollAnimator.setDuration(Utilities.calculateTranslationAnimationDuration(newScroll -
                 curScroll, 250));
-        mScrollAnimator.setInterpolator(BakedBezierInterpolator.INSTANCE);
+        mScrollAnimator.setInterpolator(RecentsConfiguration.getInstance().defaultBezierInterpolator);
         mScrollAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
             @Override
             public void onAnimationUpdate(ValueAnimator animation) {
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java
index b03f389..403c81e 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskView.java
@@ -31,7 +31,6 @@ import android.view.View;
 import android.view.animation.AccelerateInterpolator;
 import android.widget.FrameLayout;
 import com.android.systemui.R;
-import com.android.systemui.recents.BakedBezierInterpolator;
 import com.android.systemui.recents.Constants;
 import com.android.systemui.recents.RecentsConfiguration;
 import com.android.systemui.recents.model.Task;
@@ -161,7 +160,7 @@ public class TaskView extends FrameLayout implements View.OnClickListener,
                     .scaleY(toTransform.scale)
                     .alpha(toTransform.alpha)
                     .setDuration(duration)
-                    .setInterpolator(BakedBezierInterpolator.INSTANCE)
+                    .setInterpolator(config.defaultBezierInterpolator)
                     .withLayer()
                     .setUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
                         @Override
@@ -221,8 +220,8 @@ public class TaskView extends FrameLayout implements View.OnClickListener,
         mBarView.setAlpha(0f);
         mBarView.animate()
                 .alpha(1f)
-                .setStartDelay(235)
-                .setInterpolator(BakedBezierInterpolator.INSTANCE)
+                .setStartDelay(250)
+                .setInterpolator(config.defaultBezierInterpolator)
                 .setDuration(config.taskBarEnterAnimDuration)
                 .withLayer()
                 .start();
@@ -234,7 +233,7 @@ public class TaskView extends FrameLayout implements View.OnClickListener,
         mBarView.animate()
             .alpha(0f)
             .setStartDelay(0)
-            .setInterpolator(BakedBezierInterpolator.INSTANCE)
+            .setInterpolator(config.defaultBezierInterpolator)
             .setDuration(config.taskBarExitAnimDuration)
             .withLayer()
             .withEndAction(new Runnable() {
@@ -252,7 +251,7 @@ public class TaskView extends FrameLayout implements View.OnClickListener,
         animate().translationX(config.taskViewRemoveAnimTranslationXPx)
             .alpha(0f)
             .setStartDelay(0)
-            .setInterpolator(BakedBezierInterpolator.INSTANCE)
+            .setInterpolator(config.defaultBezierInterpolator)
             .setDuration(config.taskViewRemoveAnimDuration)
             .withLayer()
             .withEndAction(new Runnable() {
@@ -310,7 +309,7 @@ public class TaskView extends FrameLayout implements View.OnClickListener,
         mInfoView.animate()
                 .alpha(0f)
                 .setDuration(config.taskViewInfoPaneAnimDuration)
-                .setInterpolator(BakedBezierInterpolator.INSTANCE)
+                .setInterpolator(config.defaultBezierInterpolator)
                 .withLayer()
                 .withEndAction(new Runnable() {
                     @Override