| /* |
| * 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 static android.app.ActivityTaskManager.SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT; |
| |
| import static com.android.systemui.statusbar.phone.StatusBar.SYSTEM_DIALOG_REASON_RECENT_APPS; |
| |
| import android.animation.ValueAnimator; |
| import android.animation.ValueAnimator.AnimatorUpdateListener; |
| import android.annotation.Nullable; |
| import android.app.ActivityOptions; |
| import android.content.Context; |
| import android.content.res.ColorStateList; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Point; |
| import android.graphics.PointF; |
| import android.graphics.Rect; |
| import android.graphics.drawable.ColorDrawable; |
| import android.graphics.drawable.Drawable; |
| import android.os.Handler; |
| import android.util.ArraySet; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.util.MathUtils; |
| import android.view.LayoutInflater; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.ViewDebug; |
| import android.view.ViewPropertyAnimator; |
| import android.view.Window; |
| import android.view.WindowInsets; |
| import android.widget.FrameLayout; |
| import android.widget.TextView; |
| |
| import com.android.internal.colorextraction.ColorExtractor; |
| import com.android.internal.colorextraction.drawable.ScrimDrawable; |
| import com.android.internal.logging.MetricsLogger; |
| import com.android.internal.logging.nano.MetricsProto.MetricsEvent; |
| import com.android.settingslib.Utils; |
| 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.RecentsActivityLaunchState; |
| import com.android.systemui.recents.RecentsConfiguration; |
| import com.android.systemui.recents.events.EventBus; |
| import com.android.systemui.recents.events.activity.CancelEnterRecentsWindowAnimationEvent; |
| import com.android.systemui.recents.events.activity.DismissRecentsToHomeAnimationStarted; |
| import com.android.systemui.recents.events.activity.DockedFirstAnimationFrameEvent; |
| import com.android.systemui.recents.events.activity.EnterRecentsWindowAnimationCompletedEvent; |
| import com.android.systemui.recents.events.activity.ExitRecentsWindowFirstAnimationFrameEvent; |
| import com.android.systemui.recents.events.activity.HideStackActionButtonEvent; |
| import com.android.systemui.recents.events.activity.LaunchTaskEvent; |
| import com.android.systemui.recents.events.activity.LaunchTaskFailedEvent; |
| import com.android.systemui.recents.events.activity.LaunchTaskStartedEvent; |
| import com.android.systemui.recents.events.activity.LaunchTaskSucceededEvent; |
| import com.android.systemui.recents.events.activity.MultiWindowStateChangedEvent; |
| import com.android.systemui.recents.events.activity.ShowEmptyViewEvent; |
| import com.android.systemui.recents.events.activity.ShowStackActionButtonEvent; |
| import com.android.systemui.recents.events.component.ExpandPipEvent; |
| import com.android.systemui.recents.events.component.ScreenPinningRequestEvent; |
| import com.android.systemui.recents.events.component.SetWaitingForTransitionStartEvent; |
| import com.android.systemui.recents.events.ui.AllTaskViewsDismissedEvent; |
| import com.android.systemui.recents.events.ui.DismissAllTaskViewsEvent; |
| import com.android.systemui.recents.events.ui.DraggingInRecentsEndedEvent; |
| import com.android.systemui.recents.events.ui.DraggingInRecentsEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragDropTargetChangedEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragEndCancelledEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent; |
| import com.android.systemui.recents.misc.ReferenceCountedTrigger; |
| import com.android.systemui.recents.misc.SystemServicesProxy; |
| import com.android.systemui.recents.model.TaskStack; |
| import com.android.systemui.recents.utilities.Utilities; |
| import com.android.systemui.shared.recents.model.Task; |
| import com.android.systemui.shared.recents.view.AppTransitionAnimationSpecCompat; |
| import com.android.systemui.shared.recents.view.AppTransitionAnimationSpecsFuture; |
| import com.android.systemui.shared.recents.view.RecentsTransition; |
| import com.android.systemui.shared.system.ActivityManagerWrapper; |
| import com.android.systemui.shared.system.ActivityOptionsCompat; |
| import com.android.systemui.shared.system.WindowManagerWrapper; |
| import com.android.systemui.stackdivider.WindowManagerProxy; |
| import com.android.systemui.statusbar.FlingAnimationUtils; |
| import com.android.systemui.statusbar.phone.ScrimController; |
| |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * This view is the the top level layout that contains TaskStacks (which are laid out according |
| * to their SpaceNode bounds. |
| */ |
| public class RecentsView extends FrameLayout { |
| |
| private static final String TAG = "RecentsView"; |
| |
| private static final int DEFAULT_UPDATE_SCRIM_DURATION = 200; |
| |
| private static final int SHOW_STACK_ACTION_BUTTON_DURATION = 134; |
| private static final int HIDE_STACK_ACTION_BUTTON_DURATION = 100; |
| |
| private static final int BUSY_RECENTS_TASK_COUNT = 3; |
| |
| private Handler mHandler; |
| private TaskStackView mTaskStackView; |
| private TextView mStackActionButton; |
| private TextView mEmptyView; |
| private final float mStackButtonShadowRadius; |
| private final PointF mStackButtonShadowDistance; |
| private final int mStackButtonShadowColor; |
| |
| private boolean mAwaitingFirstLayout = true; |
| |
| @ViewDebug.ExportedProperty(category="recents") |
| Rect mSystemInsets = new Rect(); |
| private int mDividerSize; |
| |
| private float mBusynessFactor; |
| private ScrimDrawable mBackgroundScrim; |
| private ColorDrawable mMultiWindowBackgroundScrim; |
| private ValueAnimator mBackgroundScrimAnimator; |
| private Point mTmpDisplaySize = new Point(); |
| |
| private final AnimatorUpdateListener mUpdateBackgroundScrimAlpha = (animation) -> { |
| int alpha = (Integer) animation.getAnimatedValue(); |
| mBackgroundScrim.setAlpha(alpha); |
| mMultiWindowBackgroundScrim.setAlpha(alpha); |
| }; |
| |
| private RecentsTransitionComposer mTransitionHelper; |
| @ViewDebug.ExportedProperty(deepExport=true, prefix="touch_") |
| private RecentsViewTouchHandler mTouchHandler; |
| private final FlingAnimationUtils mFlingAnimationUtils; |
| |
| public RecentsView(Context context) { |
| this(context, null); |
| } |
| |
| public RecentsView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public RecentsView(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public RecentsView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| setWillNotDraw(false); |
| |
| SystemServicesProxy ssp = LegacyRecentsImpl.getSystemServices(); |
| mHandler = new Handler(); |
| mTransitionHelper = new RecentsTransitionComposer(getContext()); |
| mDividerSize = ssp.getDockedDividerSize(context); |
| mTouchHandler = new RecentsViewTouchHandler(this); |
| mFlingAnimationUtils = new FlingAnimationUtils(context, 0.3f); |
| mBackgroundScrim = new ScrimDrawable(); |
| mMultiWindowBackgroundScrim = new ColorDrawable(); |
| |
| LayoutInflater inflater = LayoutInflater.from(context); |
| mEmptyView = (TextView) inflater.inflate(R.layout.recents_empty, this, false); |
| addView(mEmptyView); |
| |
| if (mStackActionButton != null) { |
| removeView(mStackActionButton); |
| } |
| mStackActionButton = (TextView) inflater.inflate(LegacyRecentsImpl.getConfiguration() |
| .isLowRamDevice |
| ? R.layout.recents_low_ram_stack_action_button |
| : R.layout.recents_stack_action_button, |
| this, false); |
| |
| mStackButtonShadowRadius = mStackActionButton.getShadowRadius(); |
| mStackButtonShadowDistance = new PointF(mStackActionButton.getShadowDx(), |
| mStackActionButton.getShadowDy()); |
| mStackButtonShadowColor = mStackActionButton.getShadowColor(); |
| addView(mStackActionButton); |
| |
| reevaluateStyles(); |
| } |
| |
| public void reevaluateStyles() { |
| int textColor = Utils.getColorAttrDefaultColor(mContext, R.attr.wallpaperTextColor); |
| boolean usingDarkText = Color.luminance(textColor) < 0.5f; |
| |
| mEmptyView.setTextColor(textColor); |
| mEmptyView.setCompoundDrawableTintList(new ColorStateList(new int[][]{ |
| {android.R.attr.state_enabled}}, new int[]{textColor})); |
| |
| if (mStackActionButton != null) { |
| mStackActionButton.setTextColor(textColor); |
| // Enable/disable shadow if text color is already dark. |
| if (usingDarkText) { |
| mStackActionButton.setShadowLayer(0, 0, 0, 0); |
| } else { |
| mStackActionButton.setShadowLayer(mStackButtonShadowRadius, |
| mStackButtonShadowDistance.x, mStackButtonShadowDistance.y, |
| mStackButtonShadowColor); |
| } |
| } |
| |
| // Let's also require dark status and nav bars if the text is dark |
| int systemBarsStyle = usingDarkText ? View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR | |
| View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR : 0; |
| |
| setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | |
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | |
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | |
| systemBarsStyle); |
| } |
| |
| /** |
| * Called from RecentsActivity when it is relaunched. |
| */ |
| public void onReload(TaskStack stack, boolean isResumingFromVisible) { |
| final RecentsConfiguration config = LegacyRecentsImpl.getConfiguration(); |
| final RecentsActivityLaunchState launchState = config.getLaunchState(); |
| final boolean isTaskStackEmpty = stack.getTaskCount() == 0; |
| |
| if (mTaskStackView == null) { |
| isResumingFromVisible = false; |
| mTaskStackView = new TaskStackView(getContext()); |
| mTaskStackView.setSystemInsets(mSystemInsets); |
| addView(mTaskStackView); |
| } |
| |
| // Reset the state |
| mAwaitingFirstLayout = !isResumingFromVisible; |
| |
| // Update the stack |
| mTaskStackView.onReload(isResumingFromVisible); |
| updateStack(stack, true /* setStackViewTasks */); |
| updateBusyness(); |
| |
| if (isResumingFromVisible) { |
| // If we are already visible, then restore the background scrim |
| animateBackgroundScrim(getOpaqueScrimAlpha(), DEFAULT_UPDATE_SCRIM_DURATION); |
| } else { |
| // If we are already occluded by the app, then set the final background scrim alpha now. |
| // Otherwise, defer until the enter animation completes to animate the scrim alpha with |
| // the tasks for the home animation. |
| if (launchState.launchedViaDockGesture || launchState.launchedFromApp |
| || isTaskStackEmpty) { |
| mBackgroundScrim.setAlpha((int) (getOpaqueScrimAlpha() * 255)); |
| } else { |
| mBackgroundScrim.setAlpha(0); |
| } |
| mMultiWindowBackgroundScrim.setAlpha(mBackgroundScrim.getAlpha()); |
| } |
| } |
| |
| /** |
| * Called from RecentsActivity when the task stack is updated. |
| */ |
| public void updateStack(TaskStack stack, boolean setStackViewTasks) { |
| if (setStackViewTasks) { |
| mTaskStackView.setTasks(stack, true /* allowNotifyStackChanges */); |
| } |
| |
| // Update the top level view's visibilities |
| if (stack.getTaskCount() > 0) { |
| hideEmptyView(); |
| } else { |
| showEmptyView(R.string.recents_empty_message); |
| } |
| } |
| |
| /** |
| * Animates the scrim opacity based on how many tasks are visible. |
| * Called from {@link RecentsActivity} when tasks are dismissed. |
| */ |
| public void updateScrimOpacity() { |
| if (updateBusyness()) { |
| animateBackgroundScrim(getOpaqueScrimAlpha(), DEFAULT_UPDATE_SCRIM_DURATION); |
| } |
| } |
| |
| /** |
| * Updates the busyness factor. |
| * |
| * @return True if it changed. |
| */ |
| private boolean updateBusyness() { |
| final int taskCount = mTaskStackView.getStack().getTaskCount(); |
| final float busyness = Math.min(taskCount, BUSY_RECENTS_TASK_COUNT) |
| / (float) BUSY_RECENTS_TASK_COUNT; |
| if (mBusynessFactor == busyness) { |
| return false; |
| } else { |
| mBusynessFactor = busyness; |
| return true; |
| } |
| } |
| |
| /** |
| * Returns the current TaskStack. |
| */ |
| public TaskStack getStack() { |
| return mTaskStackView.getStack(); |
| } |
| |
| /** |
| * Returns the window background scrim. |
| */ |
| public void updateBackgroundScrim(Window window, boolean isInMultiWindow) { |
| if (isInMultiWindow) { |
| mBackgroundScrim.setCallback(null); |
| window.setBackgroundDrawable(mMultiWindowBackgroundScrim); |
| } else { |
| mMultiWindowBackgroundScrim.setCallback(null); |
| window.setBackgroundDrawable(mBackgroundScrim); |
| } |
| } |
| |
| /** Launches the focused task from the first stack if possible */ |
| public boolean launchFocusedTask(int logEvent) { |
| if (mTaskStackView != null) { |
| Task task = mTaskStackView.getFocusedTask(); |
| if (task != null) { |
| TaskView taskView = mTaskStackView.getChildViewForTask(task); |
| EventBus.getDefault().send(new LaunchTaskEvent(taskView, task, null, false)); |
| |
| if (logEvent != 0) { |
| MetricsLogger.action(getContext(), logEvent, |
| task.key.getComponent().toString()); |
| } |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** Launches the task that recents was launched from if possible */ |
| public boolean launchPreviousTask() { |
| if (LegacyRecentsImpl.getConfiguration().getLaunchState().launchedFromPipApp) { |
| // If the app auto-entered PiP on the way to Recents, then just re-expand it |
| EventBus.getDefault().send(new ExpandPipEvent()); |
| return true; |
| } |
| |
| if (mTaskStackView != null) { |
| Task task = getStack().getLaunchTarget(); |
| if (task != null) { |
| TaskView taskView = mTaskStackView.getChildViewForTask(task); |
| EventBus.getDefault().send(new LaunchTaskEvent(taskView, task, null, false)); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Hides the task stack and shows the empty view. |
| */ |
| public void showEmptyView(int msgResId) { |
| mTaskStackView.setVisibility(View.INVISIBLE); |
| mEmptyView.setText(msgResId); |
| mEmptyView.setVisibility(View.VISIBLE); |
| mEmptyView.bringToFront(); |
| mStackActionButton.bringToFront(); |
| } |
| |
| /** |
| * Shows the task stack and hides the empty view. |
| */ |
| public void hideEmptyView() { |
| mEmptyView.setVisibility(View.INVISIBLE); |
| mTaskStackView.setVisibility(View.VISIBLE); |
| mTaskStackView.bringToFront(); |
| mStackActionButton.bringToFront(); |
| } |
| |
| /** |
| * Set the color of the scrim. |
| * |
| * @param scrimColors Colors to use. |
| * @param animated Interpolate colors if true. |
| */ |
| public void setScrimColors(ColorExtractor.GradientColors scrimColors, boolean animated) { |
| mBackgroundScrim.setColor(scrimColors.getMainColor(), animated); |
| int alpha = mMultiWindowBackgroundScrim.getAlpha(); |
| mMultiWindowBackgroundScrim.setColor(scrimColors.getMainColor()); |
| mMultiWindowBackgroundScrim.setAlpha(alpha); |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| EventBus.getDefault().register(this, RecentsActivity.EVENT_BUS_PRIORITY + 1); |
| EventBus.getDefault().register(mTouchHandler, RecentsActivity.EVENT_BUS_PRIORITY + 2); |
| super.onAttachedToWindow(); |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| EventBus.getDefault().unregister(this); |
| EventBus.getDefault().unregister(mTouchHandler); |
| } |
| |
| /** |
| * This is called with the full size of the window since we are handling our own insets. |
| */ |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| int width = MeasureSpec.getSize(widthMeasureSpec); |
| int height = MeasureSpec.getSize(heightMeasureSpec); |
| |
| if (mTaskStackView.getVisibility() != GONE) { |
| mTaskStackView.measure(widthMeasureSpec, heightMeasureSpec); |
| } |
| |
| // Measure the empty view to the full size of the screen |
| if (mEmptyView.getVisibility() != GONE) { |
| measureChild(mEmptyView, MeasureSpec.makeMeasureSpec(width, MeasureSpec.AT_MOST), |
| MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST)); |
| } |
| |
| // Measure the stack action button within the constraints of the space above the stack |
| Rect buttonBounds = mTaskStackView.mLayoutAlgorithm.getStackActionButtonRect(); |
| measureChild(mStackActionButton, |
| MeasureSpec.makeMeasureSpec(buttonBounds.width(), MeasureSpec.AT_MOST), |
| MeasureSpec.makeMeasureSpec(buttonBounds.height(), MeasureSpec.AT_MOST)); |
| |
| setMeasuredDimension(width, height); |
| } |
| |
| /** |
| * This is called with the full size of the window since we are handling our own insets. |
| */ |
| @Override |
| protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| if (mTaskStackView.getVisibility() != GONE) { |
| mTaskStackView.layout(left, top, left + getMeasuredWidth(), top + getMeasuredHeight()); |
| } |
| |
| // Layout the empty view |
| if (mEmptyView.getVisibility() != GONE) { |
| int leftRightInsets = mSystemInsets.left + mSystemInsets.right; |
| int topBottomInsets = mSystemInsets.top + mSystemInsets.bottom; |
| int childWidth = mEmptyView.getMeasuredWidth(); |
| int childHeight = mEmptyView.getMeasuredHeight(); |
| int childLeft = left + mSystemInsets.left + |
| Math.max(0, (right - left - leftRightInsets - childWidth)) / 2; |
| int childTop = top + mSystemInsets.top + |
| Math.max(0, (bottom - top - topBottomInsets - childHeight)) / 2; |
| mEmptyView.layout(childLeft, childTop, childLeft + childWidth, childTop + childHeight); |
| } |
| |
| // Needs to know the screen size since the gradient never scales up or down |
| // even when bounds change. |
| mContext.getDisplay().getRealSize(mTmpDisplaySize); |
| mBackgroundScrim.setBounds(left, top, right, bottom); |
| mMultiWindowBackgroundScrim.setBounds(0, 0, mTmpDisplaySize.x, mTmpDisplaySize.y); |
| |
| // Layout the stack action button such that its drawable is start-aligned with the |
| // stack, vertically centered in the available space above the stack |
| Rect buttonBounds = getStackActionButtonBoundsFromStackLayout(); |
| mStackActionButton.layout(buttonBounds.left, buttonBounds.top, buttonBounds.right, |
| buttonBounds.bottom); |
| |
| if (mAwaitingFirstLayout) { |
| mAwaitingFirstLayout = false; |
| // If launched via dragging from the nav bar, then we should translate the whole view |
| // down offscreen |
| RecentsActivityLaunchState launchState = LegacyRecentsImpl.getConfiguration().getLaunchState(); |
| if (launchState.launchedViaDragGesture) { |
| setTranslationY(getMeasuredHeight()); |
| } else { |
| setTranslationY(0f); |
| } |
| |
| if (LegacyRecentsImpl.getConfiguration().isLowRamDevice |
| && mEmptyView.getVisibility() == View.VISIBLE) { |
| animateEmptyView(true /* show */, null /* postAnimationTrigger */); |
| } |
| } |
| } |
| |
| @Override |
| public WindowInsets onApplyWindowInsets(WindowInsets insets) { |
| mSystemInsets.set(insets.getSystemWindowInsetsAsRect()); |
| mTaskStackView.setSystemInsets(mSystemInsets); |
| requestLayout(); |
| return insets; |
| } |
| |
| @Override |
| public boolean onInterceptTouchEvent(MotionEvent ev) { |
| return mTouchHandler.onInterceptTouchEvent(ev); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent ev) { |
| return mTouchHandler.onTouchEvent(ev); |
| } |
| |
| @Override |
| public void onDrawForeground(Canvas canvas) { |
| super.onDrawForeground(canvas); |
| |
| ArrayList<DockState> visDockStates = mTouchHandler.getVisibleDockStates(); |
| for (int i = visDockStates.size() - 1; i >= 0; i--) { |
| visDockStates.get(i).viewState.draw(canvas); |
| } |
| } |
| |
| @Override |
| protected boolean verifyDrawable(Drawable who) { |
| ArrayList<DockState> visDockStates = mTouchHandler.getVisibleDockStates(); |
| for (int i = visDockStates.size() - 1; i >= 0; i--) { |
| Drawable d = visDockStates.get(i).viewState.dockAreaOverlay; |
| if (d == who) { |
| return true; |
| } |
| } |
| return super.verifyDrawable(who); |
| } |
| |
| /**** EventBus Events ****/ |
| |
| public final void onBusEvent(LaunchTaskEvent event) { |
| launchTaskFromRecents(getStack(), event.task, mTaskStackView, event.taskView, |
| event.screenPinningRequested, event.targetWindowingMode, event.targetActivityType); |
| if (LegacyRecentsImpl.getConfiguration().isLowRamDevice) { |
| EventBus.getDefault().send(new HideStackActionButtonEvent(false /* translate */)); |
| } |
| } |
| |
| public final void onBusEvent(DismissRecentsToHomeAnimationStarted event) { |
| int taskViewExitToHomeDuration = TaskStackAnimationHelper.EXIT_TO_HOME_TRANSLATION_DURATION; |
| // Hide the stack action button |
| EventBus.getDefault().send(new HideStackActionButtonEvent()); |
| animateBackgroundScrim(0f, taskViewExitToHomeDuration); |
| |
| if (LegacyRecentsImpl.getConfiguration().isLowRamDevice) { |
| animateEmptyView(false /* show */, event.getAnimationTrigger()); |
| } |
| } |
| |
| public final void onBusEvent(DragStartEvent event) { |
| updateVisibleDockRegions(LegacyRecentsImpl.getConfiguration().getDockStatesForCurrentOrientation(), |
| true /* isDefaultDockState */, DockState.NONE.viewState.dockAreaAlpha, |
| DockState.NONE.viewState.hintTextAlpha, |
| true /* animateAlpha */, false /* animateBounds */); |
| |
| // Temporarily hide the stack action button without changing visibility |
| if (mStackActionButton != null) { |
| mStackActionButton.animate() |
| .alpha(0f) |
| .setDuration(HIDE_STACK_ACTION_BUTTON_DURATION) |
| .setInterpolator(Interpolators.ALPHA_OUT) |
| .start(); |
| } |
| } |
| |
| public final void onBusEvent(DragDropTargetChangedEvent event) { |
| if (event.dropTarget == null || !(event.dropTarget instanceof DockState)) { |
| updateVisibleDockRegions( |
| LegacyRecentsImpl.getConfiguration().getDockStatesForCurrentOrientation(), |
| true /* isDefaultDockState */, DockState.NONE.viewState.dockAreaAlpha, |
| DockState.NONE.viewState.hintTextAlpha, |
| true /* animateAlpha */, true /* animateBounds */); |
| } else { |
| final DockState dockState = (DockState) event.dropTarget; |
| updateVisibleDockRegions(new DockState[] {dockState}, |
| false /* isDefaultDockState */, -1, -1, true /* animateAlpha */, |
| true /* animateBounds */); |
| } |
| if (mStackActionButton != null) { |
| event.addPostAnimationCallback(new Runnable() { |
| @Override |
| public void run() { |
| // Move the clear all button to its new position |
| Rect buttonBounds = getStackActionButtonBoundsFromStackLayout(); |
| mStackActionButton.setLeftTopRightBottom(buttonBounds.left, buttonBounds.top, |
| buttonBounds.right, buttonBounds.bottom); |
| } |
| }); |
| } |
| } |
| |
| public final void onBusEvent(final DragEndEvent event) { |
| // Handle the case where we drop onto a dock region |
| if (event.dropTarget instanceof DockState) { |
| final DockState dockState = (DockState) event.dropTarget; |
| |
| // Hide the dock region |
| updateVisibleDockRegions(null, false /* isDefaultDockState */, -1, -1, |
| false /* animateAlpha */, false /* animateBounds */); |
| |
| // We translated the view but we need to animate it back from the current layout-space |
| // rect to its final layout-space rect |
| Utilities.setViewFrameFromTranslation(event.taskView); |
| |
| final ActivityOptions options = ActivityOptionsCompat.makeSplitScreenOptions( |
| dockState.createMode == SPLIT_SCREEN_CREATE_MODE_TOP_OR_LEFT); |
| if (ActivityManagerWrapper.getInstance().startActivityFromRecents(event.task.key.id, |
| options)) { |
| final Runnable animStartedListener = () -> { |
| EventBus.getDefault().send(new DockedFirstAnimationFrameEvent()); |
| // Remove the task and don't bother relaying out, as all the tasks |
| // will be relaid out when the stack changes on the multiwindow |
| // change event |
| getStack().removeTask(event.task, null, true /* fromDockGesture */); |
| }; |
| final Rect taskRect = getTaskRect(event.taskView); |
| AppTransitionAnimationSpecsFuture future = new AppTransitionAnimationSpecsFuture( |
| getHandler()) { |
| @Override |
| public List<AppTransitionAnimationSpecCompat> composeSpecs() { |
| return mTransitionHelper.composeDockAnimationSpec(event.taskView, taskRect); |
| } |
| }; |
| WindowManagerWrapper.getInstance().overridePendingAppTransitionMultiThumbFuture( |
| future, animStartedListener, getHandler(), true /* scaleUp */, |
| getContext().getDisplayId()); |
| MetricsLogger.action(mContext, MetricsEvent.ACTION_WINDOW_DOCK_DRAG_DROP, |
| event.task.getTopComponent().flattenToShortString()); |
| } else { |
| EventBus.getDefault().send(new DragEndCancelledEvent(getStack(), event.task, |
| event.taskView)); |
| } |
| } else { |
| // Animate the overlay alpha back to 0 |
| updateVisibleDockRegions(null, true /* isDefaultDockState */, -1, -1, |
| true /* animateAlpha */, false /* animateBounds */); |
| } |
| |
| // Show the stack action button again without changing visibility |
| if (mStackActionButton != null) { |
| mStackActionButton.animate() |
| .alpha(1f) |
| .setDuration(SHOW_STACK_ACTION_BUTTON_DURATION) |
| .setInterpolator(Interpolators.ALPHA_IN) |
| .start(); |
| } |
| } |
| |
| public final void onBusEvent(final DragEndCancelledEvent event) { |
| // Animate the overlay alpha back to 0 |
| updateVisibleDockRegions(null, true /* isDefaultDockState */, -1, -1, |
| true /* animateAlpha */, false /* animateBounds */); |
| } |
| |
| private Rect getTaskRect(TaskView taskView) { |
| int[] location = taskView.getLocationOnScreen(); |
| int viewX = location[0]; |
| int viewY = location[1]; |
| return new Rect(viewX, viewY, |
| (int) (viewX + taskView.getWidth() * taskView.getScaleX()), |
| (int) (viewY + taskView.getHeight() * taskView.getScaleY())); |
| } |
| |
| public final void onBusEvent(DraggingInRecentsEvent event) { |
| if (mTaskStackView.getTaskViews().size() > 0) { |
| setTranslationY(event.distanceFromTop - mTaskStackView.getTaskViews().get(0).getY()); |
| } |
| } |
| |
| public final void onBusEvent(DraggingInRecentsEndedEvent event) { |
| ViewPropertyAnimator animator = animate(); |
| if (event.velocity > mFlingAnimationUtils.getMinVelocityPxPerSecond()) { |
| animator.translationY(getHeight()); |
| animator.withEndAction(new Runnable() { |
| @Override |
| public void run() { |
| WindowManagerProxy.getInstance().maximizeDockedStack(); |
| } |
| }); |
| mFlingAnimationUtils.apply(animator, getTranslationY(), getHeight(), event.velocity); |
| } else { |
| animator.translationY(0f); |
| animator.setListener(null); |
| mFlingAnimationUtils.apply(animator, getTranslationY(), 0, event.velocity); |
| } |
| animator.start(); |
| } |
| |
| public final void onBusEvent(EnterRecentsWindowAnimationCompletedEvent event) { |
| RecentsActivityLaunchState launchState = LegacyRecentsImpl.getConfiguration().getLaunchState(); |
| if (!launchState.launchedViaDockGesture && !launchState.launchedFromApp |
| && getStack().getTaskCount() > 0) { |
| animateBackgroundScrim(getOpaqueScrimAlpha(), |
| TaskStackAnimationHelper.ENTER_FROM_HOME_TRANSLATION_DURATION); |
| } |
| } |
| |
| public final void onBusEvent(AllTaskViewsDismissedEvent event) { |
| EventBus.getDefault().send(new HideStackActionButtonEvent()); |
| } |
| |
| public final void onBusEvent(DismissAllTaskViewsEvent event) { |
| SystemServicesProxy ssp = LegacyRecentsImpl.getSystemServices(); |
| if (!ssp.hasDockedTask()) { |
| // Animate the background away only if we are dismissing Recents to home |
| animateBackgroundScrim(0f, DEFAULT_UPDATE_SCRIM_DURATION); |
| } |
| } |
| |
| public final void onBusEvent(ShowStackActionButtonEvent event) { |
| showStackActionButton(SHOW_STACK_ACTION_BUTTON_DURATION, event.translate); |
| } |
| |
| public final void onBusEvent(HideStackActionButtonEvent event) { |
| hideStackActionButton(HIDE_STACK_ACTION_BUTTON_DURATION, true /* translate */); |
| } |
| |
| public final void onBusEvent(MultiWindowStateChangedEvent event) { |
| updateStack(event.stack, false /* setStackViewTasks */); |
| } |
| |
| public final void onBusEvent(ShowEmptyViewEvent event) { |
| showEmptyView(R.string.recents_empty_message); |
| } |
| |
| /** |
| * Shows the stack action button. |
| */ |
| private void showStackActionButton(final int duration, final boolean translate) { |
| final ReferenceCountedTrigger postAnimationTrigger = new ReferenceCountedTrigger(); |
| if (mStackActionButton.getVisibility() == View.INVISIBLE) { |
| mStackActionButton.setVisibility(View.VISIBLE); |
| mStackActionButton.setAlpha(0f); |
| if (translate) { |
| mStackActionButton.setTranslationY(mStackActionButton.getMeasuredHeight() * |
| (LegacyRecentsImpl.getConfiguration().isLowRamDevice ? 1 : -0.25f)); |
| } else { |
| mStackActionButton.setTranslationY(0f); |
| } |
| postAnimationTrigger.addLastDecrementRunnable(new Runnable() { |
| @Override |
| public void run() { |
| if (translate) { |
| mStackActionButton.animate() |
| .translationY(0f); |
| } |
| mStackActionButton.animate() |
| .alpha(1f) |
| .setDuration(duration) |
| .setInterpolator(Interpolators.FAST_OUT_SLOW_IN) |
| .start(); |
| } |
| }); |
| } |
| postAnimationTrigger.flushLastDecrementRunnables(); |
| } |
| |
| /** |
| * Hides the stack action button. |
| */ |
| private void hideStackActionButton(int duration, boolean translate) { |
| final ReferenceCountedTrigger postAnimationTrigger = new ReferenceCountedTrigger(); |
| hideStackActionButton(duration, translate, postAnimationTrigger); |
| postAnimationTrigger.flushLastDecrementRunnables(); |
| } |
| |
| /** |
| * Hides the stack action button. |
| */ |
| private void hideStackActionButton(int duration, boolean translate, |
| final ReferenceCountedTrigger postAnimationTrigger) { |
| if (mStackActionButton.getVisibility() == View.VISIBLE) { |
| if (translate) { |
| mStackActionButton.animate().translationY(mStackActionButton.getMeasuredHeight() |
| * (LegacyRecentsImpl.getConfiguration().isLowRamDevice ? 1 : -0.25f)); |
| } |
| mStackActionButton.animate() |
| .alpha(0f) |
| .setDuration(duration) |
| .setInterpolator(Interpolators.FAST_OUT_SLOW_IN) |
| .withEndAction(new Runnable() { |
| @Override |
| public void run() { |
| mStackActionButton.setVisibility(View.INVISIBLE); |
| postAnimationTrigger.decrement(); |
| } |
| }) |
| .start(); |
| postAnimationTrigger.increment(); |
| } |
| } |
| |
| /** |
| * Animates a translation in the Y direction and fades in/out for empty view to show or hide it. |
| * @param show whether to translate up and fade in the empty view to the center of the screen |
| * @param postAnimationTrigger to keep track of the animation |
| */ |
| private void animateEmptyView(boolean show, ReferenceCountedTrigger postAnimationTrigger) { |
| float start = mTaskStackView.getStackAlgorithm().getTaskRect().height() / 4; |
| mEmptyView.setTranslationY(show ? start : 0); |
| mEmptyView.setAlpha(show ? 0f : 1f); |
| ViewPropertyAnimator animator = mEmptyView.animate() |
| .setDuration(150) |
| .setInterpolator(Interpolators.FAST_OUT_SLOW_IN) |
| .translationY(show ? 0 : start) |
| .alpha(show ? 1f : 0f); |
| |
| if (postAnimationTrigger != null) { |
| animator.setListener(postAnimationTrigger.decrementOnAnimationEnd()); |
| postAnimationTrigger.increment(); |
| } |
| animator.start(); |
| } |
| |
| /** |
| * Updates the dock region to match the specified dock state. |
| */ |
| private void updateVisibleDockRegions(DockState[] newDockStates, |
| boolean isDefaultDockState, int overrideAreaAlpha, int overrideHintAlpha, |
| boolean animateAlpha, boolean animateBounds) { |
| ArraySet<DockState> newDockStatesSet = Utilities.arrayToSet(newDockStates, |
| new ArraySet<DockState>()); |
| ArrayList<DockState> visDockStates = mTouchHandler.getVisibleDockStates(); |
| for (int i = visDockStates.size() - 1; i >= 0; i--) { |
| DockState dockState = visDockStates.get(i); |
| DockState.ViewState viewState = dockState.viewState; |
| if (newDockStates == null || !newDockStatesSet.contains(dockState)) { |
| // This is no longer visible, so hide it |
| viewState.startAnimation(null, 0, 0, TaskStackView.SLOW_SYNC_STACK_DURATION, |
| Interpolators.FAST_OUT_SLOW_IN, animateAlpha, animateBounds); |
| } else { |
| // This state is now visible, update the bounds and show it |
| int areaAlpha = overrideAreaAlpha != -1 |
| ? overrideAreaAlpha |
| : viewState.dockAreaAlpha; |
| int hintAlpha = overrideHintAlpha != -1 |
| ? overrideHintAlpha |
| : viewState.hintTextAlpha; |
| Rect bounds = isDefaultDockState |
| ? dockState.getPreDockedBounds(getMeasuredWidth(), getMeasuredHeight(), |
| mSystemInsets) |
| : dockState.getDockedBounds(getMeasuredWidth(), getMeasuredHeight(), |
| mDividerSize, mSystemInsets, getResources()); |
| if (viewState.dockAreaOverlay.getCallback() != this) { |
| viewState.dockAreaOverlay.setCallback(this); |
| viewState.dockAreaOverlay.setBounds(bounds); |
| } |
| viewState.startAnimation(bounds, areaAlpha, hintAlpha, |
| TaskStackView.SLOW_SYNC_STACK_DURATION, Interpolators.FAST_OUT_SLOW_IN, |
| animateAlpha, animateBounds); |
| } |
| } |
| } |
| |
| /** |
| * Scrim alpha based on how busy recents is: |
| * Scrim will be {@link ScrimController#GRADIENT_SCRIM_ALPHA} when the stack is empty, |
| * and {@link ScrimController#GRADIENT_SCRIM_ALPHA_BUSY} when it's full. |
| * |
| * @return Alpha from 0 to 1. |
| */ |
| private float getOpaqueScrimAlpha() { |
| return MathUtils.map(0, 1, ScrimController.GRADIENT_SCRIM_ALPHA, |
| ScrimController.GRADIENT_SCRIM_ALPHA_BUSY, mBusynessFactor); |
| } |
| |
| /** |
| * Animates the background scrim to the given {@param alpha}. |
| */ |
| private void animateBackgroundScrim(float alpha, int duration) { |
| Utilities.cancelAnimationWithoutCallbacks(mBackgroundScrimAnimator); |
| // Calculate the absolute alpha to animate from |
| final int fromAlpha = mBackgroundScrim.getAlpha(); |
| final int toAlpha = (int) (alpha * 255); |
| mBackgroundScrimAnimator = ValueAnimator.ofInt(fromAlpha, toAlpha); |
| mBackgroundScrimAnimator.setDuration(duration); |
| mBackgroundScrimAnimator.setInterpolator(toAlpha > fromAlpha |
| ? Interpolators.ALPHA_IN |
| : Interpolators.ALPHA_OUT); |
| mBackgroundScrimAnimator.addUpdateListener(mUpdateBackgroundScrimAlpha); |
| mBackgroundScrimAnimator.start(); |
| } |
| |
| /** |
| * @return the bounds of the stack action button. |
| */ |
| Rect getStackActionButtonBoundsFromStackLayout() { |
| Rect actionButtonRect = new Rect( |
| mTaskStackView.mLayoutAlgorithm.getStackActionButtonRect()); |
| int left, top; |
| if (LegacyRecentsImpl.getConfiguration().isLowRamDevice) { |
| Rect windowRect = LegacyRecentsImpl.getSystemServices().getWindowRect(); |
| int spaceLeft = windowRect.width() - mSystemInsets.left - mSystemInsets.right; |
| left = (spaceLeft - mStackActionButton.getMeasuredWidth()) / 2 + mSystemInsets.left; |
| top = windowRect.height() - (mStackActionButton.getMeasuredHeight() |
| + mSystemInsets.bottom + mStackActionButton.getPaddingBottom() / 2); |
| } else { |
| left = isLayoutRtl() |
| ? actionButtonRect.left - mStackActionButton.getPaddingLeft() |
| : actionButtonRect.right + mStackActionButton.getPaddingRight() |
| - mStackActionButton.getMeasuredWidth(); |
| top = actionButtonRect.top + |
| (actionButtonRect.height() - mStackActionButton.getMeasuredHeight()) / 2; |
| } |
| actionButtonRect.set(left, top, left + mStackActionButton.getMeasuredWidth(), |
| top + mStackActionButton.getMeasuredHeight()); |
| return actionButtonRect; |
| } |
| |
| View getStackActionButton() { |
| return mStackActionButton; |
| } |
| |
| /** |
| * Launches the specified {@link Task}. |
| */ |
| public void launchTaskFromRecents(final TaskStack stack, @Nullable final Task task, |
| final TaskStackView stackView, final TaskView taskView, |
| final boolean screenPinningRequested, final int windowingMode, final int activityType) { |
| |
| final Runnable animStartedListener; |
| final AppTransitionAnimationSpecsFuture transitionFuture; |
| if (taskView != null) { |
| |
| // Fetch window rect here already in order not to be blocked on lock contention in WM |
| // when the future calls it. |
| final Rect windowRect = LegacyRecentsImpl.getSystemServices().getWindowRect(); |
| transitionFuture = new AppTransitionAnimationSpecsFuture(stackView.getHandler()) { |
| @Override |
| public List<AppTransitionAnimationSpecCompat> composeSpecs() { |
| return mTransitionHelper.composeAnimationSpecs(task, stackView, windowingMode, |
| activityType, windowRect); |
| } |
| }; |
| animStartedListener = new Runnable() { |
| private boolean mHandled; |
| |
| @Override |
| public void run() { |
| if (mHandled) { |
| return; |
| } |
| mHandled = true; |
| |
| // If we are launching into another task, cancel the previous task's |
| // window transition |
| EventBus.getDefault().send(new CancelEnterRecentsWindowAnimationEvent(task)); |
| EventBus.getDefault().send(new ExitRecentsWindowFirstAnimationFrameEvent()); |
| stackView.cancelAllTaskViewAnimations(); |
| |
| if (screenPinningRequested) { |
| // Request screen pinning after the animation runs |
| mHandler.postDelayed(() -> { |
| EventBus.getDefault().send(new ScreenPinningRequestEvent(mContext, |
| task.key.id)); |
| }, 350); |
| } |
| |
| if (!LegacyRecentsImpl.getConfiguration().isLowRamDevice) { |
| // Reset the state where we are waiting for the transition to start |
| EventBus.getDefault().send(new SetWaitingForTransitionStartEvent(false)); |
| } |
| } |
| }; |
| } else { |
| // This is only the case if the task is not on screen (scrolled offscreen for example) |
| transitionFuture = null; |
| animStartedListener = new Runnable() { |
| private boolean mHandled; |
| |
| @Override |
| public void run() { |
| if (mHandled) { |
| return; |
| } |
| mHandled = true; |
| |
| // If we are launching into another task, cancel the previous task's |
| // window transition |
| EventBus.getDefault().send(new CancelEnterRecentsWindowAnimationEvent(task)); |
| EventBus.getDefault().send(new ExitRecentsWindowFirstAnimationFrameEvent()); |
| stackView.cancelAllTaskViewAnimations(); |
| |
| if (!LegacyRecentsImpl.getConfiguration().isLowRamDevice) { |
| // Reset the state where we are waiting for the transition to start |
| EventBus.getDefault().send(new SetWaitingForTransitionStartEvent(false)); |
| } |
| } |
| }; |
| } |
| |
| EventBus.getDefault().send(new SetWaitingForTransitionStartEvent(true)); |
| final ActivityOptions opts = RecentsTransition.createAspectScaleAnimation(mContext, |
| mHandler, true /* scaleUp */, transitionFuture != null ? transitionFuture : null, |
| animStartedListener); |
| if (taskView == null) { |
| // If there is no task view, then we do not need to worry about animating out occluding |
| // task views, and we can launch immediately |
| startTaskActivity(stack, task, taskView, opts, transitionFuture, |
| windowingMode, activityType); |
| } else { |
| LaunchTaskStartedEvent launchStartedEvent = new LaunchTaskStartedEvent(taskView, |
| screenPinningRequested); |
| EventBus.getDefault().send(launchStartedEvent); |
| startTaskActivity(stack, task, taskView, opts, transitionFuture, windowingMode, |
| activityType); |
| } |
| ActivityManagerWrapper.getInstance().closeSystemWindows(SYSTEM_DIALOG_REASON_RECENT_APPS); |
| } |
| |
| /** |
| * Starts the activity for the launch task. |
| * |
| * @param taskView this is the {@link TaskView} that we are launching from. This can be null if |
| * we are toggling recents and the launch-to task is now offscreen. |
| */ |
| private void startTaskActivity(TaskStack stack, Task task, @Nullable TaskView taskView, |
| ActivityOptions opts, AppTransitionAnimationSpecsFuture transitionFuture, |
| int windowingMode, int activityType) { |
| ActivityManagerWrapper.getInstance().startActivityFromRecentsAsync(task.key, opts, |
| windowingMode, activityType, succeeded -> { |
| if (succeeded) { |
| // Keep track of the index of the task launch |
| int taskIndexFromFront = 0; |
| int taskIndex = stack.indexOfTask(task); |
| if (taskIndex > -1) { |
| taskIndexFromFront = stack.getTaskCount() - taskIndex - 1; |
| } |
| EventBus.getDefault().send(new LaunchTaskSucceededEvent(taskIndexFromFront)); |
| } else { |
| Log.e(TAG, mContext.getString(R.string.recents_launch_error_message, task.title)); |
| |
| // Dismiss the task if we fail to launch it |
| if (taskView != null) { |
| taskView.dismissTask(); |
| } |
| |
| // Keep track of failed launches |
| EventBus.getDefault().send(new LaunchTaskFailedEvent()); |
| } |
| }, getHandler()); |
| if (transitionFuture != null) { |
| mHandler.post(transitionFuture::composeSpecsSynchronous); |
| } |
| } |
| |
| @Override |
| public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { |
| super.requestDisallowInterceptTouchEvent(disallowIntercept); |
| mTouchHandler.cancelStackActionButtonClick(); |
| } |
| |
| public void dump(String prefix, PrintWriter writer) { |
| String innerPrefix = prefix + " "; |
| String id = Integer.toHexString(System.identityHashCode(this)); |
| |
| writer.print(prefix); writer.print(TAG); |
| writer.print(" awaitingFirstLayout="); writer.print(mAwaitingFirstLayout ? "Y" : "N"); |
| writer.print(" insets="); writer.print(Utilities.dumpRect(mSystemInsets)); |
| writer.print(" [0x"); writer.print(id); writer.print("]"); |
| writer.println(); |
| |
| if (getStack() != null) { |
| getStack().dump(innerPrefix, writer); |
| } |
| if (mTaskStackView != null) { |
| mTaskStackView.dump(innerPrefix, writer); |
| } |
| } |
| } |
