Implements the new subscript proactive suggestions style

Change-Id: I89575a315f1468bde2a0f7894cd19b1124afa840

7 files changed, 170 insertions, 0 deletions

diff --git a/quickstep/recents_ui_overrides/res/layout/proactive_hints_container.xml b/quickstep/recents_ui_overrides/res/layout/proactive_hints_container.xml
new file mode 100644
index 000000000..be3f17acd
--- /dev/null
+++ b/quickstep/recents_ui_overrides/res/layout/proactive_hints_container.xml
@@ -0,0 +1,7 @@
+<com.android.quickstep.hints.ProactiveHintsContainer
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_gravity="center_horizontal|bottom"
+    android:gravity="center_horizontal">
+</com.android.quickstep.hints.ProactiveHintsContainer>
\ No newline at end of file
diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/RecentsViewStateController.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
index 11a1885d1..c3a769887 100644
--- a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
@@ -31,6 +31,7 @@ import com.android.launcher3.LauncherState;
 import com.android.launcher3.LauncherStateManager.AnimationConfig;
 import com.android.launcher3.anim.AnimatorSetBuilder;
 import com.android.launcher3.anim.PropertySetter;
+import com.android.quickstep.hints.ProactiveHintsContainer;
 import com.android.quickstep.views.ClearAllButton;
 import com.android.quickstep.views.LauncherRecentsView;
 import com.android.quickstep.views.RecentsView;
@@ -53,6 +54,14 @@ public final class RecentsViewStateController extends
         if (state.overviewUi) {
             mRecentsView.updateEmptyMessage();
             mRecentsView.resetTaskVisuals();
+            mRecentsView.setHintVisibility(1f);
+        } else {
+            mRecentsView.setHintVisibility(0f);
+            ProactiveHintsContainer
+                    proactiveHintsContainer = mRecentsView.getProactiveHintsContainer();
+            if (proactiveHintsContainer != null) {
+                proactiveHintsContainer.removeAllViews();
+            }
         }
         setAlphas(PropertySetter.NO_ANIM_PROPERTY_SETTER, state.getVisibleElements(mLauncher));
     }
@@ -64,6 +73,14 @@ public final class RecentsViewStateController extends
 
         if (!toState.overviewUi) {
             builder.addOnFinishRunnable(mRecentsView::resetTaskVisuals);
+            mRecentsView.setHintVisibility(0f);
+            builder.addOnFinishRunnable(() -> {
+                ProactiveHintsContainer
+                        proactiveHintsContainer = mRecentsView.getProactiveHintsContainer();
+                if (proactiveHintsContainer != null) {
+                    proactiveHintsContainer.removeAllViews();
+                }
+            });
         }
 
         if (toState.overviewUi) {
@@ -75,6 +92,7 @@ public final class RecentsViewStateController extends
             updateAnim.setDuration(config.duration);
             builder.play(updateAnim);
             mRecentsView.updateEmptyMessage();
+            builder.addOnFinishRunnable(() -> mRecentsView.setHintVisibility(1f));
         }
 
         setAlphas(config.getPropertySetter(builder), toState.getVisibleElements(mLauncher));
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/hints/ProactiveHintsContainer.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/hints/ProactiveHintsContainer.java
new file mode 100644
index 000000000..74a48517b
--- /dev/null
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/hints/ProactiveHintsContainer.java
@@ -0,0 +1,55 @@
+package com.android.quickstep.hints;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.util.FloatProperty;
+import android.view.View;
+import android.widget.FrameLayout;
+
+public class ProactiveHintsContainer extends FrameLayout {
+
+  public static final FloatProperty<ProactiveHintsContainer> HINT_VISIBILITY =
+      new FloatProperty<ProactiveHintsContainer>("hint_visibility") {
+        @Override
+        public void setValue(ProactiveHintsContainer proactiveHintsContainer, float v) {
+          proactiveHintsContainer.setHintVisibility(v);
+        }
+
+        @Override
+        public Float get(ProactiveHintsContainer proactiveHintsContainer) {
+          return proactiveHintsContainer.mHintVisibility;
+        }
+      };
+
+  private float mHintVisibility;
+
+  public ProactiveHintsContainer(Context context) {
+    super(context);
+  }
+
+  public ProactiveHintsContainer(Context context, AttributeSet attrs) {
+    super(context, attrs);
+  }
+
+  public ProactiveHintsContainer(Context context, AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+  }
+
+  public ProactiveHintsContainer(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+    super(context, attrs, defStyleAttr, defStyleRes);
+  }
+
+  public void setView(View v) {
+    removeAllViews();
+    addView(v);
+  }
+
+  public void setHintVisibility(float v) {
+    if (v == 1) {
+      setVisibility(VISIBLE);
+    } else {
+      setVisibility(GONE);
+    }
+    mHintVisibility = v;
+  }
+}
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java
index d6f223503..bdac750de 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java
@@ -34,6 +34,8 @@ import android.os.Build;
 import android.util.AttributeSet;
 import android.view.View;
 
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
@@ -41,8 +43,11 @@ import com.android.launcher3.R;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.appprediction.PredictionUiStateManager;
 import com.android.launcher3.appprediction.PredictionUiStateManager.Client;
+import com.android.launcher3.util.PendingAnimation;
+import com.android.launcher3.views.BaseDragLayer;
 import com.android.launcher3.views.ScrimView;
 import com.android.quickstep.SysUINavigationMode;
+import com.android.quickstep.hints.ProactiveHintsContainer;
 import com.android.quickstep.util.ClipAnimationHelper;
 import com.android.quickstep.util.ClipAnimationHelper.TransformParams;
 import com.android.quickstep.util.LayoutUtils;
@@ -54,6 +59,8 @@ import com.android.quickstep.util.LayoutUtils;
 public class LauncherRecentsView extends RecentsView<Launcher> {
 
     private final TransformParams mTransformParams = new TransformParams();
+    private final int mChipOverhang;
+    @Nullable private ProactiveHintsContainer mProactiveHintsContainer;
 
     public LauncherRecentsView(Context context) {
         this(context, null);
@@ -66,6 +73,16 @@ public class LauncherRecentsView extends RecentsView<Launcher> {
     public LauncherRecentsView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         setContentAlpha(0);
+        mChipOverhang = (int) context.getResources().getDimension(R.dimen.chip_hint_overhang);
+    }
+
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        View hintContainer = mActivity.findViewById(R.id.hints);
+        mProactiveHintsContainer =
+                hintContainer instanceof ProactiveHintsContainer
+                        ? (ProactiveHintsContainer) hintContainer : null;
     }
 
     @Override
@@ -84,6 +101,11 @@ public class LauncherRecentsView extends RecentsView<Launcher> {
         }
     }
 
+    @Nullable
+    public ProactiveHintsContainer getProactiveHintsContainer() {
+        return mProactiveHintsContainer;
+    }
+
     @Override
     public void draw(Canvas canvas) {
         maybeDrawEmptyMessage(canvas);
@@ -137,6 +159,48 @@ public class LauncherRecentsView extends RecentsView<Launcher> {
     @Override
     protected void getTaskSize(DeviceProfile dp, Rect outRect) {
         LayoutUtils.calculateLauncherTaskSize(getContext(), dp, outRect);
+        if (mProactiveHintsContainer != null) {
+            BaseDragLayer.LayoutParams params = (BaseDragLayer.LayoutParams) mProactiveHintsContainer.getLayoutParams();
+            params.bottomMargin = getHeight() - outRect.bottom - mChipOverhang;
+            params.width = outRect.width();
+        }
+    }
+
+    @Override
+    public PendingAnimation createTaskLauncherAnimation(TaskView tv, long duration) {
+        PendingAnimation anim = super.createTaskLauncherAnimation(tv, duration);
+
+        if (mProactiveHintsContainer != null) {
+            anim.anim.play(ObjectAnimator.ofFloat(
+                    mProactiveHintsContainer, ProactiveHintsContainer.HINT_VISIBILITY, 0));
+        }
+
+        return anim;
+    }
+
+    @Override
+    public PendingAnimation createTaskDismissAnimation(TaskView taskView, boolean animateTaskView,
+            boolean shouldRemoveTask, long duration) {
+        PendingAnimation anim = super.createTaskDismissAnimation(taskView, animateTaskView,
+                shouldRemoveTask, duration);
+
+        if (mProactiveHintsContainer != null) {
+            anim.anim.play(ObjectAnimator.ofFloat(
+                    mProactiveHintsContainer, ProactiveHintsContainer.HINT_VISIBILITY, 0));
+            anim.addEndListener(onEndListener -> {
+                if (!onEndListener.isSuccess) {
+                    mProactiveHintsContainer.setHintVisibility(1);
+                }
+            });
+        }
+
+        return anim;
+    }
+
+    public void setHintVisibility(float v) {
+        if (mProactiveHintsContainer != null) {
+            mProactiveHintsContainer.setHintVisibility(v);
+        }
     }
 
     @Override
diff --git a/res/layout/launcher.xml b/res/layout/launcher.xml
index cca899bda..9cab9c2a5 100644
--- a/res/layout/launcher.xml
+++ b/res/layout/launcher.xml
@@ -48,6 +48,11 @@
             layout="@layout/overview_panel"
             android:visibility="gone" />
 
+        <include
+            android:id="@+id/hints"
+            layout="@layout/proactive_hints_container"
+            android:visibility="gone"/>
+
         <!-- Keep these behind the workspace so that they are not visible when
          we go into AllApps -->
         <com.android.launcher3.pageindicators.WorkspacePageIndicator
diff --git a/res/layout/proactive_hints_container.xml b/res/layout/proactive_hints_container.xml
new file mode 100644
index 000000000..2637f038c
--- /dev/null
+++ b/res/layout/proactive_hints_container.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2016 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.
+-->
+<Space
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="0dp"
+    android:layout_height="0dp" />
\ No newline at end of file
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 469b176fb..0da56dafb 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -235,6 +235,7 @@
 <!-- Hints -->
     <dimen name="chip_hint_height">26dp</dimen>
     <dimen name="chip_hint_bottom_margin">194dp</dimen>
+    <dimen name="chip_hint_overhang">15dp</dimen>
 
 <!-- Theming related -->
     <dimen name="default_dialog_corner_radius">8dp</dimen>