| /* |
| * 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.recents.views; |
| |
| import android.content.Context; |
| import android.view.View; |
| |
| import com.android.systemui.Interpolators; |
| import com.android.systemui.R; |
| import com.android.systemui.recents.LegacyRecentsImpl; |
| import com.android.systemui.recents.RecentsActivity; |
| import com.android.systemui.recents.events.activity.ConfigurationChangedEvent; |
| import com.android.systemui.recents.events.activity.DismissRecentsToHomeAnimationStarted; |
| import com.android.systemui.recents.events.activity.EnterRecentsWindowAnimationCompletedEvent; |
| import com.android.systemui.recents.events.ui.DismissAllTaskViewsEvent; |
| import com.android.systemui.recents.events.activity.MultiWindowStateChangedEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragEndCancelledEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent; |
| import com.android.systemui.recents.utilities.AnimationProps; |
| |
| /** Manages the scrims for the various system bars. */ |
| public class SystemBarScrimViews { |
| |
| private static final int DEFAULT_ANIMATION_DURATION = 150; |
| |
| private Context mContext; |
| |
| private View mNavBarScrimView; |
| |
| private boolean mHasNavBarScrim; |
| private boolean mShouldAnimateNavBarScrim; |
| private boolean mHasTransposedNavBar; |
| private boolean mHasDockedTasks; |
| private int mNavBarScrimEnterDuration; |
| |
| public SystemBarScrimViews(RecentsActivity activity) { |
| mContext = activity; |
| mNavBarScrimView = activity.findViewById(R.id.nav_bar_scrim); |
| mNavBarScrimView.forceHasOverlappingRendering(false); |
| mNavBarScrimEnterDuration = activity.getResources().getInteger( |
| R.integer.recents_nav_bar_scrim_enter_duration); |
| mHasNavBarScrim = LegacyRecentsImpl.getSystemServices().hasTransposedNavigationBar(); |
| mHasDockedTasks = LegacyRecentsImpl.getSystemServices().hasDockedTask(); |
| } |
| |
| /** |
| * Updates the nav bar scrim. |
| */ |
| public void updateNavBarScrim(boolean animateNavBarScrim, boolean hasStackTasks, |
| AnimationProps animation) { |
| prepareEnterRecentsAnimation(isNavBarScrimRequired(hasStackTasks), animateNavBarScrim); |
| if (animateNavBarScrim && animation != null) { |
| animateNavBarScrimVisibility(true, animation); |
| } |
| } |
| |
| /** |
| * Prepares the scrim views for animating when entering Recents. This will be called before |
| * the first draw, unless we are updating the scrim on configuration change. |
| */ |
| private void prepareEnterRecentsAnimation(boolean hasNavBarScrim, boolean animateNavBarScrim) { |
| mHasNavBarScrim = hasNavBarScrim; |
| mShouldAnimateNavBarScrim = animateNavBarScrim; |
| |
| mNavBarScrimView.setVisibility(mHasNavBarScrim && !mShouldAnimateNavBarScrim ? |
| View.VISIBLE : View.INVISIBLE); |
| } |
| |
| /** |
| * Animates the nav bar scrim visibility. |
| */ |
| private void animateNavBarScrimVisibility(boolean visible, AnimationProps animation) { |
| int toY = 0; |
| if (visible) { |
| mNavBarScrimView.setVisibility(View.VISIBLE); |
| mNavBarScrimView.setTranslationY(mNavBarScrimView.getMeasuredHeight()); |
| } else { |
| toY = mNavBarScrimView.getMeasuredHeight(); |
| } |
| if (animation != AnimationProps.IMMEDIATE) { |
| mNavBarScrimView.animate() |
| .translationY(toY) |
| .setDuration(animation.getDuration(AnimationProps.BOUNDS)) |
| .setInterpolator(animation.getInterpolator(AnimationProps.BOUNDS)) |
| .start(); |
| } else { |
| mNavBarScrimView.setTranslationY(toY); |
| } |
| } |
| |
| /** |
| * @return Whether to show the nav bar scrim. |
| */ |
| private boolean isNavBarScrimRequired(boolean hasStackTasks) { |
| return hasStackTasks && !mHasTransposedNavBar && !mHasDockedTasks; |
| } |
| |
| /**** EventBus events ****/ |
| |
| /** |
| * Starts animating the scrim views when entering Recents. |
| */ |
| public final void onBusEvent(EnterRecentsWindowAnimationCompletedEvent event) { |
| if (mHasNavBarScrim) { |
| AnimationProps animation = mShouldAnimateNavBarScrim |
| ? new AnimationProps() |
| .setDuration(AnimationProps.BOUNDS, mNavBarScrimEnterDuration) |
| .setInterpolator(AnimationProps.BOUNDS, Interpolators.DECELERATE_QUINT) |
| : AnimationProps.IMMEDIATE; |
| animateNavBarScrimVisibility(true, animation); |
| } |
| } |
| |
| /** |
| * Starts animating the scrim views when leaving Recents (either via launching a task, or |
| * going home). |
| */ |
| public final void onBusEvent(DismissRecentsToHomeAnimationStarted event) { |
| if (mHasNavBarScrim) { |
| AnimationProps animation = createBoundsAnimation( |
| TaskStackAnimationHelper.EXIT_TO_HOME_TRANSLATION_DURATION); |
| animateNavBarScrimVisibility(false, animation); |
| } |
| } |
| |
| public final void onBusEvent(DismissAllTaskViewsEvent event) { |
| if (mHasNavBarScrim) { |
| AnimationProps animation = createBoundsAnimation( |
| TaskStackAnimationHelper.EXIT_TO_HOME_TRANSLATION_DURATION); |
| animateNavBarScrimVisibility(false, animation); |
| } |
| } |
| |
| public final void onBusEvent(ConfigurationChangedEvent event) { |
| if (event.fromDeviceOrientationChange) { |
| mHasNavBarScrim = LegacyRecentsImpl.getSystemServices().hasTransposedNavigationBar(); |
| } |
| animateScrimToCurrentNavBarState(event.hasStackTasks); |
| } |
| |
| public final void onBusEvent(MultiWindowStateChangedEvent event) { |
| mHasDockedTasks = event.inMultiWindow; |
| animateScrimToCurrentNavBarState(event.stack.getTaskCount() > 0); |
| } |
| |
| public final void onBusEvent(final DragEndEvent event) { |
| // Hide the nav bar scrims once we drop to a dock region |
| if (event.dropTarget instanceof DockState) { |
| animateScrimToCurrentNavBarState(false /* hasStackTasks */); |
| } |
| } |
| |
| public final void onBusEvent(final DragEndCancelledEvent event) { |
| // Restore the scrims to the normal state |
| animateScrimToCurrentNavBarState(event.stack.getTaskCount() > 0); |
| } |
| |
| /** |
| * Animates the scrim to match the state of the current nav bar. |
| */ |
| private void animateScrimToCurrentNavBarState(boolean hasStackTasks) { |
| boolean hasNavBarScrim = isNavBarScrimRequired(hasStackTasks); |
| if (mHasNavBarScrim != hasNavBarScrim) { |
| AnimationProps animation = hasNavBarScrim |
| ? createBoundsAnimation(DEFAULT_ANIMATION_DURATION) |
| : AnimationProps.IMMEDIATE; |
| animateNavBarScrimVisibility(hasNavBarScrim, animation); |
| } |
| mHasNavBarScrim = hasNavBarScrim; |
| } |
| |
| /** |
| * @return a default animation to aniamte the bounds of the scrim. |
| */ |
| private AnimationProps createBoundsAnimation(int duration) { |
| return new AnimationProps() |
| .setDuration(AnimationProps.BOUNDS, duration) |
| .setInterpolator(AnimationProps.BOUNDS, Interpolators.FAST_OUT_SLOW_IN); |
| } |
| } |