| /* |
| * 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.graphics.Canvas; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.os.Handler; |
| import android.util.ArraySet; |
| import android.util.AttributeSet; |
| import android.view.AppTransitionAnimationSpec; |
| import android.view.LayoutInflater; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.WindowInsets; |
| import android.view.animation.AnimationUtils; |
| import android.view.animation.Interpolator; |
| import android.widget.FrameLayout; |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.logging.MetricsLogger; |
| import com.android.systemui.R; |
| import com.android.systemui.recents.Recents; |
| import com.android.systemui.recents.RecentsActivity; |
| import com.android.systemui.recents.RecentsAppWidgetHostView; |
| 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.ui.dragndrop.DragDropTargetChangedEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent; |
| import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent; |
| import com.android.systemui.recents.misc.SystemServicesProxy; |
| import com.android.systemui.recents.model.Task; |
| import com.android.systemui.recents.model.TaskStack; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static android.app.ActivityManager.StackId.INVALID_STACK_ID; |
| |
| /** |
| * 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 implements TaskStackView.TaskStackViewCallbacks { |
| |
| private static final String TAG = "RecentsView"; |
| private static final boolean DEBUG = false; |
| |
| private int mStackViewVisibility = View.VISIBLE; |
| |
| /** The RecentsView callbacks */ |
| public interface RecentsViewCallbacks { |
| public void onAllTaskViewsDismissed(); |
| } |
| |
| LayoutInflater mInflater; |
| Handler mHandler; |
| |
| ArrayList<TaskStack> mStacks; |
| TaskStackView mTaskStackView; |
| RecentsAppWidgetHostView mSearchBar; |
| RecentsViewCallbacks mCb; |
| |
| RecentsTransitionHelper mTransitionHelper; |
| RecentsViewTouchHandler mTouchHandler; |
| DragView mDragView; |
| TaskStack.DockState[] mVisibleDockStates = { |
| TaskStack.DockState.LEFT, |
| TaskStack.DockState.TOP, |
| TaskStack.DockState.RIGHT, |
| TaskStack.DockState.BOTTOM, |
| }; |
| |
| Interpolator mFastOutSlowInInterpolator; |
| |
| Rect mSystemInsets = new Rect(); |
| |
| public RecentsView(Context context) { |
| super(context); |
| } |
| |
| 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); |
| mInflater = LayoutInflater.from(context); |
| mHandler = new Handler(); |
| mTransitionHelper = new RecentsTransitionHelper(getContext(), mHandler); |
| mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(context, |
| com.android.internal.R.interpolator.fast_out_slow_in); |
| mTouchHandler = new RecentsViewTouchHandler(this); |
| } |
| |
| /** Sets the callbacks */ |
| public void setCallbacks(RecentsViewCallbacks cb) { |
| mCb = cb; |
| } |
| |
| /** Set/get the bsp root node */ |
| public void setTaskStack(TaskStack stack) { |
| RecentsConfiguration config = Recents.getConfiguration(); |
| if (config.getLaunchState().launchedReuseTaskStackViews) { |
| if (mTaskStackView != null) { |
| // If onRecentsHidden is not triggered, we need to the stack view again here |
| mTaskStackView.reset(); |
| mTaskStackView.setStack(stack); |
| } else { |
| mTaskStackView = new TaskStackView(getContext(), stack); |
| mTaskStackView.setCallbacks(this); |
| addView(mTaskStackView); |
| } |
| } else { |
| if (mTaskStackView != null) { |
| removeView(mTaskStackView); |
| } |
| mTaskStackView = new TaskStackView(getContext(), stack); |
| mTaskStackView.setCallbacks(this); |
| addView(mTaskStackView); |
| } |
| mTaskStackView.setVisibility(mStackViewVisibility); |
| |
| // Trigger a new layout |
| requestLayout(); |
| } |
| |
| /** Gets the next task in the stack - or if the last - the top task */ |
| public Task getNextTaskOrTopTask(Task taskToSearch) { |
| Task returnTask = null; |
| boolean found = false; |
| if (mTaskStackView != null) { |
| TaskStack stack = mTaskStackView.getStack(); |
| ArrayList<Task> taskList = stack.getTasks(); |
| // Iterate the stack views and try and find the focused task |
| for (int j = taskList.size() - 1; j >= 0; --j) { |
| Task task = taskList.get(j); |
| // Return the next task in the line. |
| if (found) |
| return task; |
| // Remember the first possible task as the top task. |
| if (returnTask == null) |
| returnTask = task; |
| if (task == taskToSearch) |
| found = true; |
| } |
| } |
| return returnTask; |
| } |
| |
| /** Launches the focused task from the first stack if possible */ |
| public boolean launchFocusedTask() { |
| if (mTaskStackView != null) { |
| TaskStack stack = mTaskStackView.getStack(); |
| Task task = mTaskStackView.getFocusedTask(); |
| if (task != null) { |
| TaskView taskView = mTaskStackView.getChildViewForTask(task); |
| onTaskViewClicked(mTaskStackView, taskView, stack, task, false, null, |
| INVALID_STACK_ID); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** Launches a given task. */ |
| public boolean launchTask(Task task, Rect taskBounds, int destinationStack) { |
| if (mTaskStackView != null) { |
| TaskStack stack = mTaskStackView.getStack(); |
| // Iterate the stack views and try and find the given task. |
| List<TaskView> taskViews = mTaskStackView.getTaskViews(); |
| int taskViewCount = taskViews.size(); |
| for (int j = 0; j < taskViewCount; j++) { |
| TaskView tv = taskViews.get(j); |
| if (tv.getTask() == task) { |
| onTaskViewClicked(mTaskStackView, tv, stack, task, false, |
| taskBounds, destinationStack); |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** Requests all task stacks to start their enter-recents animation */ |
| public void startEnterRecentsAnimation(ViewAnimation.TaskViewEnterContext ctx) { |
| // We have to increment/decrement the post animation trigger in case there are no children |
| // to ensure that it runs |
| ctx.postAnimationTrigger.increment(); |
| if (mTaskStackView != null) { |
| mTaskStackView.startEnterRecentsAnimation(ctx); |
| } |
| ctx.postAnimationTrigger.decrement(); |
| } |
| |
| /** Requests all task stacks to start their exit-recents animation */ |
| public void startExitToHomeAnimation(ViewAnimation.TaskViewExitContext ctx) { |
| // We have to increment/decrement the post animation trigger in case there are no children |
| // to ensure that it runs |
| ctx.postAnimationTrigger.increment(); |
| if (mTaskStackView != null) { |
| mTaskStackView.startExitToHomeAnimation(ctx); |
| } |
| ctx.postAnimationTrigger.decrement(); |
| |
| // If we are going home, cancel the previous task's window transition |
| EventBus.getDefault().send(new CancelEnterRecentsWindowAnimationEvent(null)); |
| |
| // Notify of the exit animation |
| EventBus.getDefault().send(new DismissRecentsToHomeAnimationStarted()); |
| } |
| |
| /** Adds the search bar */ |
| public void setSearchBar(RecentsAppWidgetHostView searchBar) { |
| // Remove the previous search bar if one exists |
| if (mSearchBar != null && indexOfChild(mSearchBar) > -1) { |
| removeView(mSearchBar); |
| } |
| // Add the new search bar |
| if (searchBar != null) { |
| mSearchBar = searchBar; |
| addView(mSearchBar); |
| } |
| } |
| |
| /** Returns whether there is currently a search bar */ |
| public boolean hasValidSearchBar() { |
| return mSearchBar != null && !mSearchBar.isReinflateRequired(); |
| } |
| |
| /** Sets the visibility of the search bar */ |
| public void setSearchBarVisibility(int visibility) { |
| if (mSearchBar != null) { |
| mSearchBar.setVisibility(visibility); |
| // Always bring the search bar to the top |
| mSearchBar.bringToFront(); |
| } |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| EventBus.getDefault().register(this, RecentsActivity.EVENT_BUS_PRIORITY + 1); |
| EventBus.getDefault().register(mTouchHandler, RecentsActivity.EVENT_BUS_PRIORITY + 1); |
| 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) { |
| RecentsConfiguration config = Recents.getConfiguration(); |
| int width = MeasureSpec.getSize(widthMeasureSpec); |
| int height = MeasureSpec.getSize(heightMeasureSpec); |
| |
| // Get the search bar bounds and measure the search bar layout |
| Rect searchBarSpaceBounds = new Rect(); |
| if (mSearchBar != null) { |
| config.getSearchBarBounds(new Rect(0, 0, width, height), mSystemInsets.top, |
| searchBarSpaceBounds); |
| mSearchBar.measure( |
| MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.width(), MeasureSpec.EXACTLY), |
| MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.height(), MeasureSpec.EXACTLY)); |
| } |
| |
| Rect taskStackBounds = new Rect(); |
| config.getTaskStackBounds(new Rect(0, 0, width, height), mSystemInsets.top, |
| mSystemInsets.right, searchBarSpaceBounds, taskStackBounds); |
| if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { |
| mTaskStackView.setTaskStackBounds(taskStackBounds, mSystemInsets); |
| mTaskStackView.measure(widthMeasureSpec, heightMeasureSpec); |
| } |
| |
| if (mDragView != null) { |
| Rect taskRect = mTaskStackView.mLayoutAlgorithm.mTaskRect; |
| mDragView.measure( |
| MeasureSpec.makeMeasureSpec(taskRect.width(), MeasureSpec.AT_MOST), |
| MeasureSpec.makeMeasureSpec(taskRect.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) { |
| RecentsConfiguration config = Recents.getConfiguration(); |
| |
| // Get the search bar bounds so that we lay it out |
| Rect measuredRect = new Rect(0, 0, getMeasuredWidth(), getMeasuredHeight()); |
| Rect searchBarSpaceBounds = new Rect(); |
| if (mSearchBar != null) { |
| config.getSearchBarBounds(measuredRect, |
| mSystemInsets.top, searchBarSpaceBounds); |
| mSearchBar.layout(searchBarSpaceBounds.left, searchBarSpaceBounds.top, |
| searchBarSpaceBounds.right, searchBarSpaceBounds.bottom); |
| } |
| |
| if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { |
| mTaskStackView.layout(left, top, left + getMeasuredWidth(), top + getMeasuredHeight()); |
| } |
| |
| if (mDragView != null) { |
| mDragView.layout(left, top, left + mDragView.getMeasuredWidth(), |
| top + mDragView.getMeasuredHeight()); |
| } |
| } |
| |
| @Override |
| public WindowInsets onApplyWindowInsets(WindowInsets insets) { |
| mSystemInsets.set(insets.getSystemWindowInsets()); |
| requestLayout(); |
| return insets.consumeSystemWindowInsets(); |
| } |
| |
| @Override |
| public boolean onInterceptTouchEvent(MotionEvent ev) { |
| return mTouchHandler.onInterceptTouchEvent(ev); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent ev) { |
| return mTouchHandler.onTouchEvent(ev); |
| } |
| |
| @Override |
| protected void dispatchDraw(Canvas canvas) { |
| super.dispatchDraw(canvas); |
| for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { |
| Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; |
| if (d.getAlpha() > 0) { |
| d.draw(canvas); |
| } |
| } |
| } |
| |
| @Override |
| protected boolean verifyDrawable(Drawable who) { |
| for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { |
| Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; |
| if (d == who) { |
| return true; |
| } |
| } |
| return super.verifyDrawable(who); |
| } |
| |
| /** Unfilters any filtered stacks */ |
| public boolean unfilterFilteredStacks() { |
| if (mStacks != null) { |
| // Check if there are any filtered stacks and unfilter them before we back out of Recents |
| boolean stacksUnfiltered = false; |
| int numStacks = mStacks.size(); |
| for (int i = 0; i < numStacks; i++) { |
| TaskStack stack = mStacks.get(i); |
| if (stack.hasFilteredTasks()) { |
| stack.unfilterTasks(); |
| stacksUnfiltered = true; |
| } |
| } |
| return stacksUnfiltered; |
| } |
| return false; |
| } |
| |
| public void disableLayersForOneFrame() { |
| if (mTaskStackView != null) { |
| mTaskStackView.disableLayersForOneFrame(); |
| } |
| } |
| |
| /**** TaskStackView.TaskStackCallbacks Implementation ****/ |
| |
| @Override |
| public void onTaskViewClicked(final TaskStackView stackView, final TaskView tv, |
| final TaskStack stack, final Task task, final boolean lockToTask, |
| final Rect bounds, int destinationStack) { |
| mTransitionHelper.launchTaskFromRecents(stack, task, stackView, tv, lockToTask, bounds, |
| destinationStack); |
| } |
| |
| @Override |
| public void onAllTaskViewsDismissed(ArrayList<Task> removedTasks) { |
| /* TODO: Not currently enabled |
| if (removedTasks != null) { |
| int taskCount = removedTasks.size(); |
| for (int i = 0; i < taskCount; i++) { |
| onTaskViewDismissed(removedTasks.get(i)); |
| } |
| } |
| */ |
| |
| mCb.onAllTaskViewsDismissed(); |
| |
| // Keep track of all-deletions |
| MetricsLogger.count(getContext(), "overview_task_all_dismissed", 1); |
| } |
| |
| @Override |
| public void onTaskStackFilterTriggered() { |
| // Hide the search bar |
| if (mSearchBar != null) { |
| int filterDuration = getResources().getInteger( |
| R.integer.recents_filter_animate_current_views_duration); |
| mSearchBar.animate() |
| .alpha(0f) |
| .setStartDelay(0) |
| .setInterpolator(mFastOutSlowInInterpolator) |
| .setDuration(filterDuration) |
| .withLayer() |
| .start(); |
| } |
| } |
| |
| @Override |
| public void onTaskStackUnfilterTriggered() { |
| // Show the search bar |
| if (mSearchBar != null) { |
| int filterDuration = getResources().getInteger( |
| R.integer.recents_filter_animate_new_views_duration); |
| mSearchBar.animate() |
| .alpha(1f) |
| .setStartDelay(0) |
| .setInterpolator(mFastOutSlowInInterpolator) |
| .setDuration(filterDuration) |
| .withLayer() |
| .start(); |
| } |
| } |
| |
| /**** EventBus Events ****/ |
| |
| public final void onBusEvent(DragStartEvent event) { |
| // Add the drag view |
| mDragView = event.dragView; |
| addView(mDragView); |
| |
| updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), |
| TaskStack.DockState.NONE.viewState.dockAreaAlpha); |
| } |
| |
| public final void onBusEvent(DragDropTargetChangedEvent event) { |
| if (event.dropTarget == null || !(event.dropTarget instanceof TaskStack.DockState)) { |
| updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), |
| TaskStack.DockState.NONE.viewState.dockAreaAlpha); |
| } else { |
| final TaskStack.DockState dockState = (TaskStack.DockState) event.dropTarget; |
| updateVisibleDockRegions(new TaskStack.DockState[] {dockState}, -1); |
| } |
| } |
| |
| public final void onBusEvent(final DragEndEvent event) { |
| final Runnable cleanUpRunnable = new Runnable() { |
| @Override |
| public void run() { |
| // Remove the drag view |
| removeView(mDragView); |
| mDragView = null; |
| } |
| }; |
| |
| // Animate the overlay alpha back to 0 |
| updateVisibleDockRegions(null, -1); |
| |
| if (event.dropTarget == null) { |
| // No drop targets for hit, so just animate the task back to its place |
| event.postAnimationTrigger.increment(); |
| event.postAnimationTrigger.addLastDecrementRunnable(new Runnable() { |
| @Override |
| public void run() { |
| cleanUpRunnable.run(); |
| } |
| }); |
| // Animate the task back to where it was before then clean up afterwards |
| TaskViewTransform taskTransform = new TaskViewTransform(); |
| TaskStackLayoutAlgorithm layoutAlgorithm = mTaskStackView.getStackAlgorithm(); |
| layoutAlgorithm.getStackTransform(event.task, |
| mTaskStackView.getScroller().getStackScroll(), taskTransform, null); |
| event.dragView.animate() |
| .scaleX(taskTransform.scale) |
| .scaleY(taskTransform.scale) |
| .translationX((layoutAlgorithm.mTaskRect.left - event.dragView.getLeft()) |
| + taskTransform.translationX) |
| .translationY((layoutAlgorithm.mTaskRect.top - event.dragView.getTop()) |
| + taskTransform.translationY) |
| .setDuration(175) |
| .setInterpolator(mFastOutSlowInInterpolator) |
| .withEndAction(event.postAnimationTrigger.decrementAsRunnable()) |
| .start(); |
| |
| } else if (event.dropTarget instanceof TaskStack.DockState) { |
| final TaskStack.DockState dockState = (TaskStack.DockState) event.dropTarget; |
| |
| // For now, just remove the drag view and the original task |
| // TODO: Animate the task to the drop target rect before launching it above |
| cleanUpRunnable.run(); |
| |
| // Dock the task and launch it |
| SystemServicesProxy ssp = Recents.getSystemServices(); |
| ssp.startTaskInDockedMode(event.task.key.id, dockState.createMode); |
| launchTask(event.task, null, INVALID_STACK_ID); |
| |
| } else { |
| // We dropped on another drop target, so just add the cleanup to the post animation |
| // trigger |
| event.postAnimationTrigger.addLastDecrementRunnable(new Runnable() { |
| @Override |
| public void run() { |
| cleanUpRunnable.run(); |
| } |
| }); |
| } |
| } |
| |
| /** |
| * Updates the dock region to match the specified dock state. |
| */ |
| private void updateVisibleDockRegions(TaskStack.DockState[] newDockStates, int overrideAlpha) { |
| ArraySet<TaskStack.DockState> newDockStatesSet = new ArraySet<>(); |
| if (newDockStates != null) { |
| for (TaskStack.DockState dockState : newDockStates) { |
| newDockStatesSet.add(dockState); |
| } |
| } |
| for (TaskStack.DockState dockState : mVisibleDockStates) { |
| TaskStack.DockState.ViewState viewState = dockState.viewState; |
| if (newDockStates == null || !newDockStatesSet.contains(dockState)) { |
| // This is no longer visible, so hide it |
| viewState.startAlphaAnimation(0, 150); |
| } else { |
| // This state is now visible, update the bounds and show it |
| int alpha = (overrideAlpha != -1 ? overrideAlpha : viewState.dockAreaAlpha); |
| viewState.dockAreaOverlay.setBounds( |
| dockState.getDockedBounds(getMeasuredWidth(), getMeasuredHeight())); |
| viewState.dockAreaOverlay.setCallback(this); |
| viewState.startAlphaAnimation(alpha, 150); |
| } |
| } |
| } |
| |
| public void setStackViewVisibility(int stackViewVisibility) { |
| mStackViewVisibility = stackViewVisibility; |
| if (mTaskStackView != null) { |
| mTaskStackView.setVisibility(stackViewVisibility); |
| invalidate(); |
| } |
| } |
| } |