RecentsView.java revision 1b58561f66a9453754b1b419296899fdc08b4c93
1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.systemui.recents.views; 18 19import android.app.ActivityOptions; 20import android.app.ActivityOptions.OnAnimationStartedListener; 21import android.content.Context; 22import android.graphics.Bitmap; 23import android.graphics.Canvas; 24import android.graphics.Rect; 25import android.graphics.drawable.Drawable; 26import android.os.Bundle; 27import android.os.IRemoteCallback; 28import android.os.RemoteException; 29import android.util.ArraySet; 30import android.util.AttributeSet; 31import android.util.Log; 32import android.util.SparseArray; 33import android.view.AppTransitionAnimationSpec; 34import android.view.IAppTransitionAnimationSpecsFuture; 35import android.view.LayoutInflater; 36import android.view.MotionEvent; 37import android.view.View; 38import android.view.WindowInsets; 39import android.view.WindowManagerGlobal; 40import android.view.animation.AnimationUtils; 41import android.view.animation.Interpolator; 42import android.widget.FrameLayout; 43 44import com.android.internal.annotations.GuardedBy; 45import com.android.internal.logging.MetricsLogger; 46import com.android.systemui.R; 47import com.android.systemui.recents.Constants; 48import com.android.systemui.recents.Recents; 49import com.android.systemui.recents.RecentsActivity; 50import com.android.systemui.recents.RecentsActivityLaunchState; 51import com.android.systemui.recents.RecentsAppWidgetHostView; 52import com.android.systemui.recents.RecentsConfiguration; 53import com.android.systemui.recents.events.EventBus; 54import com.android.systemui.recents.events.activity.DismissRecentsToHomeAnimationStarted; 55import com.android.systemui.recents.events.component.ScreenPinningRequestEvent; 56import com.android.systemui.recents.events.ui.DismissTaskViewEvent; 57import com.android.systemui.recents.events.ui.dragndrop.DragDropTargetChangedEvent; 58import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent; 59import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent; 60import com.android.systemui.recents.misc.SystemServicesProxy; 61import com.android.systemui.recents.model.Task; 62import com.android.systemui.recents.model.TaskStack; 63 64import java.util.ArrayList; 65import java.util.List; 66 67import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID; 68import static android.app.ActivityManager.StackId.FULLSCREEN_WORKSPACE_STACK_ID; 69import static android.app.ActivityManager.StackId.INVALID_STACK_ID; 70 71/** 72 * This view is the the top level layout that contains TaskStacks (which are laid out according 73 * to their SpaceNode bounds. 74 */ 75public class RecentsView extends FrameLayout implements TaskStackView.TaskStackViewCallbacks { 76 77 private static final String TAG = "RecentsView"; 78 private static final boolean DEBUG = false; 79 80 private static final boolean ADD_HEADER_BITMAP = true; 81 private int mStackViewVisibility = View.VISIBLE; 82 83 /** The RecentsView callbacks */ 84 public interface RecentsViewCallbacks { 85 public void onTaskLaunchFailed(); 86 public void onAllTaskViewsDismissed(); 87 } 88 89 LayoutInflater mInflater; 90 91 ArrayList<TaskStack> mStacks; 92 TaskStackView mTaskStackView; 93 RecentsAppWidgetHostView mSearchBar; 94 RecentsViewCallbacks mCb; 95 96 RecentsViewTouchHandler mTouchHandler; 97 DragView mDragView; 98 TaskStack.DockState[] mVisibleDockStates = { 99 TaskStack.DockState.LEFT, 100 TaskStack.DockState.TOP, 101 TaskStack.DockState.RIGHT, 102 TaskStack.DockState.BOTTOM, 103 }; 104 105 Interpolator mFastOutSlowInInterpolator; 106 107 Rect mSystemInsets = new Rect(); 108 109 @GuardedBy("this") 110 List<AppTransitionAnimationSpec> mAppTransitionAnimationSpecs; 111 112 public RecentsView(Context context) { 113 super(context); 114 } 115 116 public RecentsView(Context context, AttributeSet attrs) { 117 this(context, attrs, 0); 118 } 119 120 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr) { 121 this(context, attrs, defStyleAttr, 0); 122 } 123 124 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 125 super(context, attrs, defStyleAttr, defStyleRes); 126 setWillNotDraw(false); 127 mInflater = LayoutInflater.from(context); 128 mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(context, 129 com.android.internal.R.interpolator.fast_out_slow_in); 130 mTouchHandler = new RecentsViewTouchHandler(this); 131 } 132 133 /** Sets the callbacks */ 134 public void setCallbacks(RecentsViewCallbacks cb) { 135 mCb = cb; 136 } 137 138 /** Set/get the bsp root node */ 139 public void setTaskStack(TaskStack stack) { 140 RecentsConfiguration config = Recents.getConfiguration(); 141 if (config.getLaunchState().launchedReuseTaskStackViews) { 142 if (mTaskStackView != null) { 143 // If onRecentsHidden is not triggered, we need to the stack view again here 144 mTaskStackView.reset(); 145 mTaskStackView.setStack(stack); 146 } else { 147 mTaskStackView = new TaskStackView(getContext(), stack); 148 mTaskStackView.setCallbacks(this); 149 addView(mTaskStackView); 150 } 151 } else { 152 if (mTaskStackView != null) { 153 removeView(mTaskStackView); 154 } 155 mTaskStackView = new TaskStackView(getContext(), stack); 156 mTaskStackView.setCallbacks(this); 157 addView(mTaskStackView); 158 } 159 mTaskStackView.setVisibility(mStackViewVisibility); 160 161 // Trigger a new layout 162 requestLayout(); 163 } 164 165 /** Gets the next task in the stack - or if the last - the top task */ 166 public Task getNextTaskOrTopTask(Task taskToSearch) { 167 Task returnTask = null; 168 boolean found = false; 169 if (mTaskStackView != null) { 170 TaskStack stack = mTaskStackView.getStack(); 171 ArrayList<Task> taskList = stack.getTasks(); 172 // Iterate the stack views and try and find the focused task 173 for (int j = taskList.size() - 1; j >= 0; --j) { 174 Task task = taskList.get(j); 175 // Return the next task in the line. 176 if (found) 177 return task; 178 // Remember the first possible task as the top task. 179 if (returnTask == null) 180 returnTask = task; 181 if (task == taskToSearch) 182 found = true; 183 } 184 } 185 return returnTask; 186 } 187 188 /** Launches the focused task from the first stack if possible */ 189 public boolean launchFocusedTask() { 190 if (mTaskStackView != null) { 191 TaskStack stack = mTaskStackView.getStack(); 192 // Iterate the stack views and try and find the focused task 193 List<TaskView> taskViews = mTaskStackView.getTaskViews(); 194 int taskViewCount = taskViews.size(); 195 for (int j = 0; j < taskViewCount; j++) { 196 TaskView tv = taskViews.get(j); 197 Task task = tv.getTask(); 198 if (tv.isFocusedTask()) { 199 onTaskViewClicked(mTaskStackView, tv, stack, task, false, false, null, 200 INVALID_STACK_ID); 201 return true; 202 } 203 } 204 } 205 return false; 206 } 207 208 /** Launches a given task. */ 209 public boolean launchTask(Task task, Rect taskBounds, int destinationStack) { 210 if (mTaskStackView != null) { 211 TaskStack stack = mTaskStackView.getStack(); 212 // Iterate the stack views and try and find the given task. 213 List<TaskView> taskViews = mTaskStackView.getTaskViews(); 214 int taskViewCount = taskViews.size(); 215 for (int j = 0; j < taskViewCount; j++) { 216 TaskView tv = taskViews.get(j); 217 if (tv.getTask() == task) { 218 onTaskViewClicked(mTaskStackView, tv, stack, task, false, taskBounds != null, 219 taskBounds, destinationStack); 220 return true; 221 } 222 } 223 } 224 return false; 225 } 226 227 /** Requests all task stacks to start their enter-recents animation */ 228 public void startEnterRecentsAnimation(ViewAnimation.TaskViewEnterContext ctx) { 229 // We have to increment/decrement the post animation trigger in case there are no children 230 // to ensure that it runs 231 ctx.postAnimationTrigger.increment(); 232 if (mTaskStackView != null) { 233 mTaskStackView.startEnterRecentsAnimation(ctx); 234 } 235 ctx.postAnimationTrigger.decrement(); 236 } 237 238 /** Requests all task stacks to start their exit-recents animation */ 239 public void startExitToHomeAnimation(ViewAnimation.TaskViewExitContext ctx) { 240 // We have to increment/decrement the post animation trigger in case there are no children 241 // to ensure that it runs 242 ctx.postAnimationTrigger.increment(); 243 if (mTaskStackView != null) { 244 mTaskStackView.startExitToHomeAnimation(ctx); 245 } 246 ctx.postAnimationTrigger.decrement(); 247 248 // Notify of the exit animation 249 EventBus.getDefault().send(new DismissRecentsToHomeAnimationStarted()); 250 } 251 252 /** Adds the search bar */ 253 public void setSearchBar(RecentsAppWidgetHostView searchBar) { 254 // Remove the previous search bar if one exists 255 if (mSearchBar != null && indexOfChild(mSearchBar) > -1) { 256 removeView(mSearchBar); 257 } 258 // Add the new search bar 259 if (searchBar != null) { 260 mSearchBar = searchBar; 261 addView(mSearchBar); 262 } 263 } 264 265 /** Returns whether there is currently a search bar */ 266 public boolean hasValidSearchBar() { 267 return mSearchBar != null && !mSearchBar.isReinflateRequired(); 268 } 269 270 /** Sets the visibility of the search bar */ 271 public void setSearchBarVisibility(int visibility) { 272 if (mSearchBar != null) { 273 mSearchBar.setVisibility(visibility); 274 // Always bring the search bar to the top 275 mSearchBar.bringToFront(); 276 } 277 } 278 279 @Override 280 protected void onAttachedToWindow() { 281 EventBus.getDefault().register(this, RecentsActivity.EVENT_BUS_PRIORITY + 1); 282 EventBus.getDefault().register(mTouchHandler, RecentsActivity.EVENT_BUS_PRIORITY + 1); 283 super.onAttachedToWindow(); 284 } 285 286 @Override 287 protected void onDetachedFromWindow() { 288 super.onDetachedFromWindow(); 289 EventBus.getDefault().unregister(this); 290 EventBus.getDefault().unregister(mTouchHandler); 291 } 292 293 /** 294 * This is called with the full size of the window since we are handling our own insets. 295 */ 296 @Override 297 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 298 RecentsConfiguration config = Recents.getConfiguration(); 299 int width = MeasureSpec.getSize(widthMeasureSpec); 300 int height = MeasureSpec.getSize(heightMeasureSpec); 301 302 // Get the search bar bounds and measure the search bar layout 303 Rect searchBarSpaceBounds = new Rect(); 304 if (mSearchBar != null) { 305 config.getSearchBarBounds(new Rect(0, 0, width, height), mSystemInsets.top, 306 searchBarSpaceBounds); 307 mSearchBar.measure( 308 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.width(), MeasureSpec.EXACTLY), 309 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.height(), MeasureSpec.EXACTLY)); 310 } 311 312 Rect taskStackBounds = new Rect(); 313 config.getTaskStackBounds(new Rect(0, 0, width, height), mSystemInsets.top, 314 mSystemInsets.right, searchBarSpaceBounds, taskStackBounds); 315 if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { 316 mTaskStackView.setTaskStackBounds(taskStackBounds, mSystemInsets); 317 mTaskStackView.measure(widthMeasureSpec, heightMeasureSpec); 318 } 319 320 if (mDragView != null) { 321 Rect taskRect = mTaskStackView.mLayoutAlgorithm.mTaskRect; 322 mDragView.measure( 323 MeasureSpec.makeMeasureSpec(taskRect.width(), MeasureSpec.AT_MOST), 324 MeasureSpec.makeMeasureSpec(taskRect.height(), MeasureSpec.AT_MOST)); 325 } 326 327 setMeasuredDimension(width, height); 328 } 329 330 /** 331 * This is called with the full size of the window since we are handling our own insets. 332 */ 333 @Override 334 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 335 RecentsConfiguration config = Recents.getConfiguration(); 336 337 // Get the search bar bounds so that we lay it out 338 Rect measuredRect = new Rect(0, 0, getMeasuredWidth(), getMeasuredHeight()); 339 Rect searchBarSpaceBounds = new Rect(); 340 if (mSearchBar != null) { 341 config.getSearchBarBounds(measuredRect, 342 mSystemInsets.top, searchBarSpaceBounds); 343 mSearchBar.layout(searchBarSpaceBounds.left, searchBarSpaceBounds.top, 344 searchBarSpaceBounds.right, searchBarSpaceBounds.bottom); 345 } 346 347 if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { 348 mTaskStackView.layout(left, top, left + getMeasuredWidth(), top + getMeasuredHeight()); 349 } 350 351 if (mDragView != null) { 352 mDragView.layout(left, top, left + mDragView.getMeasuredWidth(), 353 top + mDragView.getMeasuredHeight()); 354 } 355 } 356 357 @Override 358 public WindowInsets onApplyWindowInsets(WindowInsets insets) { 359 mSystemInsets.set(insets.getSystemWindowInsets()); 360 requestLayout(); 361 return insets.consumeSystemWindowInsets(); 362 } 363 364 @Override 365 public boolean onInterceptTouchEvent(MotionEvent ev) { 366 return mTouchHandler.onInterceptTouchEvent(ev); 367 } 368 369 @Override 370 public boolean onTouchEvent(MotionEvent ev) { 371 return mTouchHandler.onTouchEvent(ev); 372 } 373 374 @Override 375 protected void dispatchDraw(Canvas canvas) { 376 super.dispatchDraw(canvas); 377 for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { 378 Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; 379 if (d.getAlpha() > 0) { 380 d.draw(canvas); 381 } 382 } 383 } 384 385 @Override 386 protected boolean verifyDrawable(Drawable who) { 387 for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { 388 Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; 389 if (d == who) { 390 return true; 391 } 392 } 393 return super.verifyDrawable(who); 394 } 395 396 /** Unfilters any filtered stacks */ 397 public boolean unfilterFilteredStacks() { 398 if (mStacks != null) { 399 // Check if there are any filtered stacks and unfilter them before we back out of Recents 400 boolean stacksUnfiltered = false; 401 int numStacks = mStacks.size(); 402 for (int i = 0; i < numStacks; i++) { 403 TaskStack stack = mStacks.get(i); 404 if (stack.hasFilteredTasks()) { 405 stack.unfilterTasks(); 406 stacksUnfiltered = true; 407 } 408 } 409 return stacksUnfiltered; 410 } 411 return false; 412 } 413 414 public void disableLayersForOneFrame() { 415 if (mTaskStackView != null) { 416 mTaskStackView.disableLayersForOneFrame(); 417 } 418 } 419 420 private IAppTransitionAnimationSpecsFuture getAppTransitionFuture(final TaskStackView stackView, 421 final TaskView clickedTask, final int offsetX, final int offsetY, 422 final float stackScroll, final int destinationStack) { 423 return new IAppTransitionAnimationSpecsFuture.Stub() { 424 @Override 425 public AppTransitionAnimationSpec[] get() throws RemoteException { 426 post(new Runnable() { 427 @Override 428 public void run() { 429 synchronized (RecentsView.this) { 430 mAppTransitionAnimationSpecs = getAppTransitionAnimationSpecs(stackView, 431 clickedTask, offsetX, offsetY, stackScroll, destinationStack); 432 RecentsView.this.notifyAll(); 433 } 434 } 435 }); 436 synchronized (RecentsView.this) { 437 while (mAppTransitionAnimationSpecs == null) { 438 try { 439 RecentsView.this.wait(); 440 } catch (InterruptedException e) {} 441 } 442 if (mAppTransitionAnimationSpecs == null) { 443 return null; 444 } 445 AppTransitionAnimationSpec[] specs 446 = new AppTransitionAnimationSpec[mAppTransitionAnimationSpecs.size()]; 447 return mAppTransitionAnimationSpecs.toArray(specs); 448 } 449 } 450 }; 451 } 452 453 private List<AppTransitionAnimationSpec> getAppTransitionAnimationSpecs(TaskStackView stackView, 454 TaskView clickedTask, int offsetX, int offsetY, float stackScroll, 455 int destinationStack) { 456 final int targetStackId = destinationStack != INVALID_STACK_ID ? 457 destinationStack : clickedTask.getTask().key.stackId; 458 if (targetStackId != FREEFORM_WORKSPACE_STACK_ID 459 && targetStackId != FULLSCREEN_WORKSPACE_STACK_ID) { 460 return null; 461 } 462 // If this is a full screen stack, the transition will be towards the single, full screen 463 // task. We only need the transition spec for this task. 464 List<AppTransitionAnimationSpec> specs = new ArrayList<>(); 465 if (targetStackId == FULLSCREEN_WORKSPACE_STACK_ID) { 466 specs.add(createThumbnailHeaderAnimationSpec( 467 stackView, offsetX, offsetY, stackScroll, clickedTask, 468 clickedTask.getTask().key.id, ADD_HEADER_BITMAP)); 469 return specs; 470 } 471 // This is a free form stack or full screen stack, so there will be multiple windows 472 // animating from thumbnails. We need transition animation specs for all of them. 473 474 // We will use top and bottom task views as a base for tasks, that aren't visible on the 475 // screen. This is necessary for cascade recents list, where some of the tasks might be 476 // hidden. 477 List<TaskView> taskViews = stackView.getTaskViews(); 478 int childCount = taskViews.size(); 479 TaskView topChild = taskViews.get(0); 480 TaskView bottomChild = taskViews.get(childCount - 1); 481 SparseArray<TaskView> taskViewsByTaskId = new SparseArray<>(); 482 for (int i = 0; i < childCount; i++) { 483 TaskView taskView = taskViews.get(i); 484 taskViewsByTaskId.put(taskView.getTask().key.id, taskView); 485 } 486 487 TaskStack stack = stackView.getStack(); 488 // We go through all tasks now and for each generate transition animation spec. If there is 489 // a view associated with a task, we use that view as a base for the animation. If there 490 // isn't, we use bottom or top view, depending on which one would be closer to the task 491 // view if it existed. 492 ArrayList<Task> tasks = stack.getTasks(); 493 boolean passedClickedTask = false; 494 for (int i = 0, n = tasks.size(); i < n; i++) { 495 Task task = tasks.get(i); 496 TaskView taskView = taskViewsByTaskId.get(task.key.id); 497 if (taskView != null) { 498 specs.add(createThumbnailHeaderAnimationSpec(stackView, offsetX, offsetY, 499 stackScroll, taskView, taskView.getTask().key.id, ADD_HEADER_BITMAP)); 500 if (taskView == clickedTask) { 501 passedClickedTask = true; 502 } 503 } else { 504 taskView = passedClickedTask ? bottomChild : topChild; 505 specs.add(createThumbnailHeaderAnimationSpec(stackView, offsetX, offsetY, 506 stackScroll, taskView, task.key.id, !ADD_HEADER_BITMAP)); 507 } 508 } 509 510 return specs; 511 } 512 513 private AppTransitionAnimationSpec createThumbnailHeaderAnimationSpec(TaskStackView stackView, 514 int offsetX, int offsetY, float stackScroll, TaskView tv, int taskId, 515 boolean addHeaderBitmap) { 516 // Disable any focused state before we draw the header 517 // Upfront the processing of the thumbnail 518 if (tv.isFocusedTask()) { 519 tv.setFocusedState(false, false /* animated */, false /* requestViewFocus */); 520 } 521 TaskViewTransform transform = new TaskViewTransform(); 522 transform = stackView.getStackAlgorithm().getStackTransform(tv.mTask, stackScroll, 523 transform, null); 524 525 float scale = tv.getScaleX(); 526 int fromHeaderWidth = (int) (tv.mHeaderView.getMeasuredWidth() * scale); 527 int fromHeaderHeight = (int) (tv.mHeaderView.getMeasuredHeight() * scale); 528 529 Bitmap b = null; 530 if (addHeaderBitmap) { 531 b = Bitmap.createBitmap(fromHeaderWidth, fromHeaderHeight, 532 Bitmap.Config.ARGB_8888); 533 534 if (Constants.DebugFlags.App.EnableTransitionThumbnailDebugMode) { 535 b.eraseColor(0xFFff0000); 536 } else { 537 Canvas c = new Canvas(b); 538 c.scale(tv.getScaleX(), tv.getScaleY()); 539 tv.mHeaderView.draw(c); 540 c.setBitmap(null); 541 542 } 543 b = b.createAshmemBitmap(); 544 } 545 546 int[] pts = new int[2]; 547 tv.getLocationOnScreen(pts); 548 549 final int left = pts[0] + offsetX; 550 final int top = pts[1] + offsetY; 551 final Rect rect = new Rect(left, top, left + (int) transform.rect.width(), 552 top + (int) transform.rect.height()); 553 554 return new AppTransitionAnimationSpec(taskId, b, rect); 555 } 556 557 /** 558 * Cancels any running window transitions for the launched task (the task animating into 559 * Recents). 560 */ 561 private void cancelLaunchedTaskWindowTransition(final Task task) { 562 SystemServicesProxy ssp = Recents.getSystemServices(); 563 RecentsConfiguration config = Recents.getConfiguration(); 564 RecentsActivityLaunchState launchState = config.getLaunchState(); 565 if (launchState.launchedToTaskId != -1 && 566 launchState.launchedToTaskId != task.key.id) { 567 ssp.cancelWindowTransition(launchState.launchedToTaskId); 568 } 569 } 570 571 /**** TaskStackView.TaskStackCallbacks Implementation ****/ 572 573 @Override 574 public void onTaskViewClicked(final TaskStackView stackView, final TaskView tv, 575 final TaskStack stack, final Task task, final boolean lockToTask, 576 final boolean boundsValid, final Rect bounds, int destinationStack) { 577 578 // Upfront the processing of the thumbnail 579 TaskViewTransform transform = new TaskViewTransform(); 580 View sourceView; 581 int offsetX = 0; 582 int offsetY = 0; 583 float stackScroll = stackView.getScroller().getStackScroll(); 584 if (tv == null) { 585 // If there is no actual task view, then use the stack view as the source view 586 // and then offset to the expected transform rect, but bound this to just 587 // outside the display rect (to ensure we don't animate from too far away) 588 sourceView = stackView; 589 offsetX = (int) transform.rect.left; 590 offsetY = getMeasuredHeight(); 591 } else { 592 sourceView = tv.mThumbnailView; 593 } 594 595 // Compute the thumbnail to scale up from 596 final SystemServicesProxy ssp = Recents.getSystemServices(); 597 boolean screenPinningRequested = false; 598 ActivityOptions opts = ActivityOptions.makeBasic(); 599 ActivityOptions.OnAnimationStartedListener animStartedListener = null; 600 final IAppTransitionAnimationSpecsFuture transitionFuture; 601 if (task.thumbnail != null && task.thumbnail.getWidth() > 0 && 602 task.thumbnail.getHeight() > 0) { 603 animStartedListener = new ActivityOptions.OnAnimationStartedListener() { 604 @Override 605 public void onAnimationStarted() { 606 // If we are launching into another task, cancel the previous task's 607 // window transition 608 cancelLaunchedTaskWindowTransition(task); 609 610 if (lockToTask) { 611 // Request screen pinning after the animation runs 612 postDelayed(new Runnable() { 613 @Override 614 public void run() { 615 EventBus.getDefault().send(new ScreenPinningRequestEvent( 616 getContext(), ssp)); 617 } 618 }, 350); 619 } 620 } 621 }; 622 transitionFuture = getAppTransitionFuture(stackView, tv, offsetX, offsetY, stackScroll, 623 destinationStack); 624 screenPinningRequested = true; 625 } else { 626 transitionFuture = null; 627 } 628 if (boundsValid) { 629 opts.setBounds(bounds.isEmpty() ? null : bounds); 630 } 631 final ActivityOptions launchOpts = opts; 632 final boolean finalScreenPinningRequested = screenPinningRequested; 633 final OnAnimationStartedListener finalAnimStartedListener = animStartedListener; 634 final Runnable launchRunnable = new Runnable() { 635 @Override 636 public void run() { 637 if (task.isActive) { 638 // Bring an active task to the foreground 639 ssp.moveTaskToFront(task.key.id, launchOpts); 640 } else { 641 if (ssp.startActivityFromRecents(getContext(), task.key.id, task.activityLabel, 642 launchOpts)) { 643 if (!finalScreenPinningRequested) { 644 // If we have not requested this already to be run after the window 645 // transition, then just run it now 646 EventBus.getDefault().send(new ScreenPinningRequestEvent( 647 getContext(), ssp)); 648 } 649 } else { 650 // Dismiss the task and return the user to home if we fail to 651 // launch the task 652 EventBus.getDefault().send(new DismissTaskViewEvent(task, tv)); 653 if (mCb != null) { 654 mCb.onTaskLaunchFailed(); 655 } 656 657 // Keep track of failed launches 658 MetricsLogger.count(getContext(), "overview_task_launch_failed", 1); 659 } 660 } 661 if (transitionFuture != null) { 662 IRemoteCallback.Stub callback = new IRemoteCallback.Stub() { 663 @Override 664 public void sendResult(Bundle data) throws RemoteException { 665 post(new Runnable() { 666 @Override 667 public void run() { 668 if (finalAnimStartedListener != null) { 669 finalAnimStartedListener.onAnimationStarted(); 670 } 671 } 672 }); 673 } 674 }; 675 try { 676 WindowManagerGlobal.getWindowManagerService() 677 .overridePendingAppTransitionMultiThumbFuture(transitionFuture, 678 callback, true /* scaleUp */); 679 } catch (RemoteException e) { 680 Log.w(TAG, "Failed to override transition: " + e); 681 } 682 } 683 } 684 }; 685 686 // Keep track of the index of the task launch 687 int taskIndexFromFront = 0; 688 int taskIndex = stack.indexOfTask(task); 689 if (taskIndex > -1) { 690 taskIndexFromFront = stack.getTaskCount() - taskIndex - 1; 691 } 692 MetricsLogger.histogram(getContext(), "overview_task_launch_index", taskIndexFromFront); 693 694 // Launch the app right away if there is no task view, otherwise, animate the icon out first 695 if (tv == null) { 696 launchRunnable.run(); 697 } else { 698 if (task.group != null && !task.group.isFrontMostTask(task)) { 699 // For affiliated tasks that are behind other tasks, we must animate the front cards 700 // out of view before starting the task transition 701 stackView.startLaunchTaskAnimation(tv, launchRunnable, lockToTask); 702 } else { 703 // Otherwise, we can start the task transition immediately 704 stackView.startLaunchTaskAnimation(tv, null, lockToTask); 705 launchRunnable.run(); 706 } 707 } 708 } 709 710 @Override 711 public void onAllTaskViewsDismissed(ArrayList<Task> removedTasks) { 712 /* TODO: Not currently enabled 713 if (removedTasks != null) { 714 int taskCount = removedTasks.size(); 715 for (int i = 0; i < taskCount; i++) { 716 onTaskViewDismissed(removedTasks.get(i)); 717 } 718 } 719 */ 720 721 mCb.onAllTaskViewsDismissed(); 722 723 // Keep track of all-deletions 724 MetricsLogger.count(getContext(), "overview_task_all_dismissed", 1); 725 } 726 727 @Override 728 public void onTaskStackFilterTriggered() { 729 // Hide the search bar 730 if (mSearchBar != null) { 731 int filterDuration = getResources().getInteger( 732 R.integer.recents_filter_animate_current_views_duration); 733 mSearchBar.animate() 734 .alpha(0f) 735 .setStartDelay(0) 736 .setInterpolator(mFastOutSlowInInterpolator) 737 .setDuration(filterDuration) 738 .withLayer() 739 .start(); 740 } 741 } 742 743 @Override 744 public void onTaskStackUnfilterTriggered() { 745 // Show the search bar 746 if (mSearchBar != null) { 747 int filterDuration = getResources().getInteger( 748 R.integer.recents_filter_animate_new_views_duration); 749 mSearchBar.animate() 750 .alpha(1f) 751 .setStartDelay(0) 752 .setInterpolator(mFastOutSlowInInterpolator) 753 .setDuration(filterDuration) 754 .withLayer() 755 .start(); 756 } 757 } 758 759 /**** EventBus Events ****/ 760 761 public final void onBusEvent(DragStartEvent event) { 762 // Add the drag view 763 mDragView = event.dragView; 764 addView(mDragView); 765 766 updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), 767 TaskStack.DockState.NONE.viewState.dockAreaAlpha); 768 } 769 770 public final void onBusEvent(DragDropTargetChangedEvent event) { 771 if (event.dropTarget == null || !(event.dropTarget instanceof TaskStack.DockState)) { 772 updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), 773 TaskStack.DockState.NONE.viewState.dockAreaAlpha); 774 } else { 775 final TaskStack.DockState dockState = (TaskStack.DockState) event.dropTarget; 776 updateVisibleDockRegions(new TaskStack.DockState[] {dockState}, -1); 777 } 778 } 779 780 public final void onBusEvent(final DragEndEvent event) { 781 final Runnable cleanUpRunnable = new Runnable() { 782 @Override 783 public void run() { 784 // Remove the drag view 785 removeView(mDragView); 786 mDragView = null; 787 } 788 }; 789 790 // Animate the overlay alpha back to 0 791 updateVisibleDockRegions(null, -1); 792 793 if (event.dropTarget == null) { 794 // No drop targets for hit, so just animate the task back to its place 795 event.postAnimationTrigger.increment(); 796 event.postAnimationTrigger.addLastDecrementRunnable(new Runnable() { 797 @Override 798 public void run() { 799 cleanUpRunnable.run(); 800 } 801 }); 802 // Animate the task back to where it was before then clean up afterwards 803 TaskViewTransform taskTransform = new TaskViewTransform(); 804 TaskStackLayoutAlgorithm layoutAlgorithm = mTaskStackView.getStackAlgorithm(); 805 layoutAlgorithm.getStackTransform(event.task, 806 mTaskStackView.getScroller().getStackScroll(), taskTransform, null); 807 event.dragView.animate() 808 .scaleX(taskTransform.scale) 809 .scaleY(taskTransform.scale) 810 .translationX((layoutAlgorithm.mTaskRect.left - event.dragView.getLeft()) 811 + taskTransform.translationX) 812 .translationY((layoutAlgorithm.mTaskRect.top - event.dragView.getTop()) 813 + taskTransform.translationY) 814 .setDuration(175) 815 .setInterpolator(mFastOutSlowInInterpolator) 816 .withEndAction(event.postAnimationTrigger.decrementAsRunnable()) 817 .start(); 818 819 } else if (event.dropTarget instanceof TaskStack.DockState) { 820 final TaskStack.DockState dockState = (TaskStack.DockState) event.dropTarget; 821 822 // For now, just remove the drag view and the original task 823 // TODO: Animate the task to the drop target rect before launching it above 824 cleanUpRunnable.run(); 825 826 // Dock the task and launch it 827 SystemServicesProxy ssp = Recents.getSystemServices(); 828 ssp.startTaskInDockedMode(event.task.key.id, dockState.createMode); 829 launchTask(event.task, null, INVALID_STACK_ID); 830 831 } else { 832 // We dropped on another drop target, so just add the cleanup to the post animation 833 // trigger 834 event.postAnimationTrigger.addLastDecrementRunnable(new Runnable() { 835 @Override 836 public void run() { 837 cleanUpRunnable.run(); 838 } 839 }); 840 } 841 } 842 843 /** 844 * Updates the dock region to match the specified dock state. 845 */ 846 private void updateVisibleDockRegions(TaskStack.DockState[] newDockStates, int overrideAlpha) { 847 ArraySet<TaskStack.DockState> newDockStatesSet = new ArraySet<>(); 848 if (newDockStates != null) { 849 for (TaskStack.DockState dockState : newDockStates) { 850 newDockStatesSet.add(dockState); 851 } 852 } 853 for (TaskStack.DockState dockState : mVisibleDockStates) { 854 TaskStack.DockState.ViewState viewState = dockState.viewState; 855 if (newDockStates == null || !newDockStatesSet.contains(dockState)) { 856 // This is no longer visible, so hide it 857 viewState.startAlphaAnimation(0, 150); 858 } else { 859 // This state is now visible, update the bounds and show it 860 int alpha = (overrideAlpha != -1 ? overrideAlpha : viewState.dockAreaAlpha); 861 viewState.dockAreaOverlay.setBounds( 862 dockState.getDockedBounds(getMeasuredWidth(), getMeasuredHeight())); 863 viewState.dockAreaOverlay.setCallback(this); 864 viewState.startAlphaAnimation(alpha, 150); 865 } 866 } 867 } 868 869 public void setStackViewVisibility(int stackViewVisibility) { 870 mStackViewVisibility = stackViewVisibility; 871 if (mTaskStackView != null) { 872 mTaskStackView.setVisibility(stackViewVisibility); 873 invalidate(); 874 } 875 } 876} 877