RecentsView.java revision 13d30660ef6da2d924e4fc943ccd187767ee0cd2
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.CancelEnterRecentsWindowAnimationEvent; 55import com.android.systemui.recents.events.activity.DismissRecentsToHomeAnimationStarted; 56import com.android.systemui.recents.events.component.ScreenPinningRequestEvent; 57import com.android.systemui.recents.events.ui.DismissTaskViewEvent; 58import com.android.systemui.recents.events.ui.dragndrop.DragDropTargetChangedEvent; 59import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent; 60import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent; 61import com.android.systemui.recents.misc.SystemServicesProxy; 62import com.android.systemui.recents.model.Task; 63import com.android.systemui.recents.model.TaskStack; 64 65import java.util.ArrayList; 66import java.util.List; 67 68import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID; 69import static android.app.ActivityManager.StackId.FULLSCREEN_WORKSPACE_STACK_ID; 70import static android.app.ActivityManager.StackId.INVALID_STACK_ID; 71 72/** 73 * This view is the the top level layout that contains TaskStacks (which are laid out according 74 * to their SpaceNode bounds. 75 */ 76public class RecentsView extends FrameLayout implements TaskStackView.TaskStackViewCallbacks { 77 78 private static final String TAG = "RecentsView"; 79 private static final boolean DEBUG = false; 80 81 private static final boolean ADD_HEADER_BITMAP = true; 82 private int mStackViewVisibility = View.VISIBLE; 83 84 /** The RecentsView callbacks */ 85 public interface RecentsViewCallbacks { 86 public void onTaskLaunchFailed(); 87 public void onAllTaskViewsDismissed(); 88 } 89 90 LayoutInflater mInflater; 91 92 ArrayList<TaskStack> mStacks; 93 TaskStackView mTaskStackView; 94 RecentsAppWidgetHostView mSearchBar; 95 RecentsViewCallbacks mCb; 96 97 RecentsViewTouchHandler mTouchHandler; 98 DragView mDragView; 99 TaskStack.DockState[] mVisibleDockStates = { 100 TaskStack.DockState.LEFT, 101 TaskStack.DockState.TOP, 102 TaskStack.DockState.RIGHT, 103 TaskStack.DockState.BOTTOM, 104 }; 105 106 Interpolator mFastOutSlowInInterpolator; 107 108 Rect mSystemInsets = new Rect(); 109 110 111 @GuardedBy("this") 112 List<AppTransitionAnimationSpec> mAppTransitionAnimationSpecs; 113 114 public RecentsView(Context context) { 115 super(context); 116 } 117 118 public RecentsView(Context context, AttributeSet attrs) { 119 this(context, attrs, 0); 120 } 121 122 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr) { 123 this(context, attrs, defStyleAttr, 0); 124 } 125 126 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 127 super(context, attrs, defStyleAttr, defStyleRes); 128 setWillNotDraw(false); 129 mInflater = LayoutInflater.from(context); 130 mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(context, 131 com.android.internal.R.interpolator.fast_out_slow_in); 132 mTouchHandler = new RecentsViewTouchHandler(this); 133 } 134 135 /** Sets the callbacks */ 136 public void setCallbacks(RecentsViewCallbacks cb) { 137 mCb = cb; 138 } 139 140 /** Set/get the bsp root node */ 141 public void setTaskStack(TaskStack stack) { 142 RecentsConfiguration config = Recents.getConfiguration(); 143 if (config.getLaunchState().launchedReuseTaskStackViews) { 144 if (mTaskStackView != null) { 145 // If onRecentsHidden is not triggered, we need to the stack view again here 146 mTaskStackView.reset(); 147 mTaskStackView.setStack(stack); 148 } else { 149 mTaskStackView = new TaskStackView(getContext(), stack); 150 mTaskStackView.setCallbacks(this); 151 addView(mTaskStackView); 152 } 153 } else { 154 if (mTaskStackView != null) { 155 removeView(mTaskStackView); 156 } 157 mTaskStackView = new TaskStackView(getContext(), stack); 158 mTaskStackView.setCallbacks(this); 159 addView(mTaskStackView); 160 } 161 mTaskStackView.setVisibility(mStackViewVisibility); 162 163 // Trigger a new layout 164 requestLayout(); 165 } 166 167 /** Gets the next task in the stack - or if the last - the top task */ 168 public Task getNextTaskOrTopTask(Task taskToSearch) { 169 Task returnTask = null; 170 boolean found = false; 171 if (mTaskStackView != null) { 172 TaskStack stack = mTaskStackView.getStack(); 173 ArrayList<Task> taskList = stack.getTasks(); 174 // Iterate the stack views and try and find the focused task 175 for (int j = taskList.size() - 1; j >= 0; --j) { 176 Task task = taskList.get(j); 177 // Return the next task in the line. 178 if (found) 179 return task; 180 // Remember the first possible task as the top task. 181 if (returnTask == null) 182 returnTask = task; 183 if (task == taskToSearch) 184 found = true; 185 } 186 } 187 return returnTask; 188 } 189 190 /** Launches the focused task from the first stack if possible */ 191 public boolean launchFocusedTask() { 192 if (mTaskStackView != null) { 193 TaskStack stack = mTaskStackView.getStack(); 194 // Iterate the stack views and try and find the focused task 195 List<TaskView> taskViews = mTaskStackView.getTaskViews(); 196 int taskViewCount = taskViews.size(); 197 for (int j = 0; j < taskViewCount; j++) { 198 TaskView tv = taskViews.get(j); 199 Task task = tv.getTask(); 200 if (tv.isFocusedTask()) { 201 onTaskViewClicked(mTaskStackView, tv, stack, task, false, false, null, 202 INVALID_STACK_ID); 203 return true; 204 } 205 } 206 } 207 return false; 208 } 209 210 /** Launches a given task. */ 211 public boolean launchTask(Task task, Rect taskBounds, int destinationStack) { 212 if (mTaskStackView != null) { 213 TaskStack stack = mTaskStackView.getStack(); 214 // Iterate the stack views and try and find the given task. 215 List<TaskView> taskViews = mTaskStackView.getTaskViews(); 216 int taskViewCount = taskViews.size(); 217 for (int j = 0; j < taskViewCount; j++) { 218 TaskView tv = taskViews.get(j); 219 if (tv.getTask() == task) { 220 onTaskViewClicked(mTaskStackView, tv, stack, task, false, taskBounds != null, 221 taskBounds, destinationStack); 222 return true; 223 } 224 } 225 } 226 return false; 227 } 228 229 /** Requests all task stacks to start their enter-recents animation */ 230 public void startEnterRecentsAnimation(ViewAnimation.TaskViewEnterContext ctx) { 231 // We have to increment/decrement the post animation trigger in case there are no children 232 // to ensure that it runs 233 ctx.postAnimationTrigger.increment(); 234 if (mTaskStackView != null) { 235 mTaskStackView.startEnterRecentsAnimation(ctx); 236 } 237 ctx.postAnimationTrigger.decrement(); 238 } 239 240 /** Requests all task stacks to start their exit-recents animation */ 241 public void startExitToHomeAnimation(ViewAnimation.TaskViewExitContext ctx) { 242 // We have to increment/decrement the post animation trigger in case there are no children 243 // to ensure that it runs 244 ctx.postAnimationTrigger.increment(); 245 if (mTaskStackView != null) { 246 mTaskStackView.startExitToHomeAnimation(ctx); 247 } 248 ctx.postAnimationTrigger.decrement(); 249 250 // If we are going home, cancel the previous task's window transition 251 EventBus.getDefault().send(new CancelEnterRecentsWindowAnimationEvent(null)); 252 253 // Notify of the exit animation 254 EventBus.getDefault().send(new DismissRecentsToHomeAnimationStarted()); 255 } 256 257 /** Adds the search bar */ 258 public void setSearchBar(RecentsAppWidgetHostView searchBar) { 259 // Remove the previous search bar if one exists 260 if (mSearchBar != null && indexOfChild(mSearchBar) > -1) { 261 removeView(mSearchBar); 262 } 263 // Add the new search bar 264 if (searchBar != null) { 265 mSearchBar = searchBar; 266 addView(mSearchBar); 267 } 268 } 269 270 /** Returns whether there is currently a search bar */ 271 public boolean hasValidSearchBar() { 272 return mSearchBar != null && !mSearchBar.isReinflateRequired(); 273 } 274 275 /** Sets the visibility of the search bar */ 276 public void setSearchBarVisibility(int visibility) { 277 if (mSearchBar != null) { 278 mSearchBar.setVisibility(visibility); 279 // Always bring the search bar to the top 280 mSearchBar.bringToFront(); 281 } 282 } 283 284 @Override 285 protected void onAttachedToWindow() { 286 EventBus.getDefault().register(this, RecentsActivity.EVENT_BUS_PRIORITY + 1); 287 EventBus.getDefault().register(mTouchHandler, RecentsActivity.EVENT_BUS_PRIORITY + 1); 288 super.onAttachedToWindow(); 289 } 290 291 @Override 292 protected void onDetachedFromWindow() { 293 super.onDetachedFromWindow(); 294 EventBus.getDefault().unregister(this); 295 EventBus.getDefault().unregister(mTouchHandler); 296 } 297 298 /** 299 * This is called with the full size of the window since we are handling our own insets. 300 */ 301 @Override 302 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 303 RecentsConfiguration config = Recents.getConfiguration(); 304 int width = MeasureSpec.getSize(widthMeasureSpec); 305 int height = MeasureSpec.getSize(heightMeasureSpec); 306 307 // Get the search bar bounds and measure the search bar layout 308 Rect searchBarSpaceBounds = new Rect(); 309 if (mSearchBar != null) { 310 config.getSearchBarBounds(new Rect(0, 0, width, height), mSystemInsets.top, 311 searchBarSpaceBounds); 312 mSearchBar.measure( 313 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.width(), MeasureSpec.EXACTLY), 314 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.height(), MeasureSpec.EXACTLY)); 315 } 316 317 Rect taskStackBounds = new Rect(); 318 config.getTaskStackBounds(new Rect(0, 0, width, height), mSystemInsets.top, 319 mSystemInsets.right, searchBarSpaceBounds, taskStackBounds); 320 if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { 321 mTaskStackView.setTaskStackBounds(taskStackBounds, mSystemInsets); 322 mTaskStackView.measure(widthMeasureSpec, heightMeasureSpec); 323 } 324 325 if (mDragView != null) { 326 Rect taskRect = mTaskStackView.mLayoutAlgorithm.mTaskRect; 327 mDragView.measure( 328 MeasureSpec.makeMeasureSpec(taskRect.width(), MeasureSpec.AT_MOST), 329 MeasureSpec.makeMeasureSpec(taskRect.height(), MeasureSpec.AT_MOST)); 330 } 331 332 setMeasuredDimension(width, height); 333 } 334 335 /** 336 * This is called with the full size of the window since we are handling our own insets. 337 */ 338 @Override 339 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 340 RecentsConfiguration config = Recents.getConfiguration(); 341 342 // Get the search bar bounds so that we lay it out 343 Rect measuredRect = new Rect(0, 0, getMeasuredWidth(), getMeasuredHeight()); 344 Rect searchBarSpaceBounds = new Rect(); 345 if (mSearchBar != null) { 346 config.getSearchBarBounds(measuredRect, 347 mSystemInsets.top, searchBarSpaceBounds); 348 mSearchBar.layout(searchBarSpaceBounds.left, searchBarSpaceBounds.top, 349 searchBarSpaceBounds.right, searchBarSpaceBounds.bottom); 350 } 351 352 if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { 353 mTaskStackView.layout(left, top, left + getMeasuredWidth(), top + getMeasuredHeight()); 354 } 355 356 if (mDragView != null) { 357 mDragView.layout(left, top, left + mDragView.getMeasuredWidth(), 358 top + mDragView.getMeasuredHeight()); 359 } 360 } 361 362 @Override 363 public WindowInsets onApplyWindowInsets(WindowInsets insets) { 364 mSystemInsets.set(insets.getSystemWindowInsets()); 365 requestLayout(); 366 return insets.consumeSystemWindowInsets(); 367 } 368 369 @Override 370 public boolean onInterceptTouchEvent(MotionEvent ev) { 371 return mTouchHandler.onInterceptTouchEvent(ev); 372 } 373 374 @Override 375 public boolean onTouchEvent(MotionEvent ev) { 376 return mTouchHandler.onTouchEvent(ev); 377 } 378 379 @Override 380 protected void dispatchDraw(Canvas canvas) { 381 super.dispatchDraw(canvas); 382 for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { 383 Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; 384 if (d.getAlpha() > 0) { 385 d.draw(canvas); 386 } 387 } 388 } 389 390 @Override 391 protected boolean verifyDrawable(Drawable who) { 392 for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { 393 Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; 394 if (d == who) { 395 return true; 396 } 397 } 398 return super.verifyDrawable(who); 399 } 400 401 /** Unfilters any filtered stacks */ 402 public boolean unfilterFilteredStacks() { 403 if (mStacks != null) { 404 // Check if there are any filtered stacks and unfilter them before we back out of Recents 405 boolean stacksUnfiltered = false; 406 int numStacks = mStacks.size(); 407 for (int i = 0; i < numStacks; i++) { 408 TaskStack stack = mStacks.get(i); 409 if (stack.hasFilteredTasks()) { 410 stack.unfilterTasks(); 411 stacksUnfiltered = true; 412 } 413 } 414 return stacksUnfiltered; 415 } 416 return false; 417 } 418 419 public void disableLayersForOneFrame() { 420 if (mTaskStackView != null) { 421 mTaskStackView.disableLayersForOneFrame(); 422 } 423 } 424 425 private IAppTransitionAnimationSpecsFuture getAppTransitionFuture(final TaskStackView stackView, 426 final TaskView clickedTask, final int offsetX, final int offsetY, 427 final float stackScroll, final int destinationStack) { 428 return new IAppTransitionAnimationSpecsFuture.Stub() { 429 @Override 430 public AppTransitionAnimationSpec[] get() throws RemoteException { 431 post(new Runnable() { 432 @Override 433 public void run() { 434 synchronized (RecentsView.this) { 435 mAppTransitionAnimationSpecs = getAppTransitionAnimationSpecs(stackView, 436 clickedTask, offsetX, offsetY, stackScroll, destinationStack); 437 RecentsView.this.notifyAll(); 438 } 439 } 440 }); 441 synchronized (RecentsView.this) { 442 while (mAppTransitionAnimationSpecs == null) { 443 try { 444 RecentsView.this.wait(); 445 } catch (InterruptedException e) {} 446 } 447 if (mAppTransitionAnimationSpecs == null) { 448 return null; 449 } 450 AppTransitionAnimationSpec[] specs 451 = new AppTransitionAnimationSpec[mAppTransitionAnimationSpecs.size()]; 452 return mAppTransitionAnimationSpecs.toArray(specs); 453 } 454 } 455 }; 456 } 457 458 private List<AppTransitionAnimationSpec> getAppTransitionAnimationSpecs(TaskStackView stackView, 459 TaskView clickedTask, int offsetX, int offsetY, float stackScroll, 460 int destinationStack) { 461 final int targetStackId = destinationStack != INVALID_STACK_ID ? 462 destinationStack : clickedTask.getTask().key.stackId; 463 if (targetStackId != FREEFORM_WORKSPACE_STACK_ID 464 && targetStackId != FULLSCREEN_WORKSPACE_STACK_ID) { 465 return null; 466 } 467 // If this is a full screen stack, the transition will be towards the single, full screen 468 // task. We only need the transition spec for this task. 469 List<AppTransitionAnimationSpec> specs = new ArrayList<>(); 470 if (targetStackId == FULLSCREEN_WORKSPACE_STACK_ID) { 471 specs.add(createThumbnailHeaderAnimationSpec( 472 stackView, offsetX, offsetY, stackScroll, clickedTask, 473 clickedTask.getTask().key.id, ADD_HEADER_BITMAP)); 474 return specs; 475 } 476 // This is a free form stack or full screen stack, so there will be multiple windows 477 // animating from thumbnails. We need transition animation specs for all of them. 478 479 // We will use top and bottom task views as a base for tasks, that aren't visible on the 480 // screen. This is necessary for cascade recents list, where some of the tasks might be 481 // hidden. 482 List<TaskView> taskViews = stackView.getTaskViews(); 483 int childCount = taskViews.size(); 484 TaskView topChild = taskViews.get(0); 485 TaskView bottomChild = taskViews.get(childCount - 1); 486 SparseArray<TaskView> taskViewsByTaskId = new SparseArray<>(); 487 for (int i = 0; i < childCount; i++) { 488 TaskView taskView = taskViews.get(i); 489 taskViewsByTaskId.put(taskView.getTask().key.id, taskView); 490 } 491 492 TaskStack stack = stackView.getStack(); 493 // We go through all tasks now and for each generate transition animation spec. If there is 494 // a view associated with a task, we use that view as a base for the animation. If there 495 // isn't, we use bottom or top view, depending on which one would be closer to the task 496 // view if it existed. 497 ArrayList<Task> tasks = stack.getTasks(); 498 boolean passedClickedTask = false; 499 for (int i = 0, n = tasks.size(); i < n; i++) { 500 Task task = tasks.get(i); 501 TaskView taskView = taskViewsByTaskId.get(task.key.id); 502 if (taskView != null) { 503 specs.add(createThumbnailHeaderAnimationSpec(stackView, offsetX, offsetY, 504 stackScroll, taskView, taskView.getTask().key.id, ADD_HEADER_BITMAP)); 505 if (taskView == clickedTask) { 506 passedClickedTask = true; 507 } 508 } else { 509 taskView = passedClickedTask ? bottomChild : topChild; 510 specs.add(createThumbnailHeaderAnimationSpec(stackView, offsetX, offsetY, 511 stackScroll, taskView, task.key.id, !ADD_HEADER_BITMAP)); 512 } 513 } 514 515 return specs; 516 } 517 518 private AppTransitionAnimationSpec createThumbnailHeaderAnimationSpec(TaskStackView stackView, 519 int offsetX, int offsetY, float stackScroll, TaskView tv, int taskId, 520 boolean addHeaderBitmap) { 521 // Disable any focused state before we draw the header 522 // Upfront the processing of the thumbnail 523 if (tv.isFocusedTask()) { 524 tv.setFocusedState(false, false /* animated */, false /* requestViewFocus */); 525 } 526 TaskViewTransform transform = new TaskViewTransform(); 527 transform = stackView.getStackAlgorithm().getStackTransform(tv.mTask, stackScroll, 528 transform, null); 529 530 float scale = tv.getScaleX(); 531 int fromHeaderWidth = (int) (tv.mHeaderView.getMeasuredWidth() * scale); 532 int fromHeaderHeight = (int) (tv.mHeaderView.getMeasuredHeight() * scale); 533 534 Bitmap b = null; 535 if (addHeaderBitmap) { 536 b = Bitmap.createBitmap(fromHeaderWidth, fromHeaderHeight, 537 Bitmap.Config.ARGB_8888); 538 539 if (Constants.DebugFlags.App.EnableTransitionThumbnailDebugMode) { 540 b.eraseColor(0xFFff0000); 541 } else { 542 Canvas c = new Canvas(b); 543 c.scale(tv.getScaleX(), tv.getScaleY()); 544 tv.mHeaderView.draw(c); 545 c.setBitmap(null); 546 547 } 548 b = b.createAshmemBitmap(); 549 } 550 551 int[] pts = new int[2]; 552 tv.getLocationOnScreen(pts); 553 554 final int left = pts[0] + offsetX; 555 final int top = pts[1] + offsetY; 556 final Rect rect = new Rect(left, top, left + (int) transform.rect.width(), 557 top + (int) transform.rect.height()); 558 559 return new AppTransitionAnimationSpec(taskId, b, rect); 560 } 561 562 /**** TaskStackView.TaskStackCallbacks Implementation ****/ 563 564 @Override 565 public void onTaskViewClicked(final TaskStackView stackView, final TaskView tv, 566 final TaskStack stack, final Task task, final boolean lockToTask, 567 final boolean boundsValid, final Rect bounds, int destinationStack) { 568 569 // Upfront the processing of the thumbnail 570 TaskViewTransform transform = new TaskViewTransform(); 571 View sourceView; 572 int offsetX = 0; 573 int offsetY = 0; 574 float stackScroll = stackView.getScroller().getStackScroll(); 575 if (tv == null) { 576 // If there is no actual task view, then use the stack view as the source view 577 // and then offset to the expected transform rect, but bound this to just 578 // outside the display rect (to ensure we don't animate from too far away) 579 sourceView = stackView; 580 offsetX = (int) transform.rect.left; 581 offsetY = getMeasuredHeight(); 582 } else { 583 sourceView = tv.mThumbnailView; 584 } 585 586 // Compute the thumbnail to scale up from 587 final SystemServicesProxy ssp = Recents.getSystemServices(); 588 boolean screenPinningRequested = false; 589 ActivityOptions opts = ActivityOptions.makeBasic(); 590 ActivityOptions.OnAnimationStartedListener animStartedListener = null; 591 final IAppTransitionAnimationSpecsFuture transitionFuture; 592 if (task.thumbnail != null && task.thumbnail.getWidth() > 0 && 593 task.thumbnail.getHeight() > 0) { 594 animStartedListener = new ActivityOptions.OnAnimationStartedListener() { 595 @Override 596 public void onAnimationStarted() { 597 // If we are launching into another task, cancel the previous task's 598 // window transition 599 EventBus.getDefault().send(new CancelEnterRecentsWindowAnimationEvent(task)); 600 601 if (lockToTask) { 602 // Request screen pinning after the animation runs 603 postDelayed(new Runnable() { 604 @Override 605 public void run() { 606 EventBus.getDefault().send(new ScreenPinningRequestEvent( 607 getContext(), ssp)); 608 } 609 }, 350); 610 } 611 } 612 }; 613 transitionFuture = getAppTransitionFuture(stackView, tv, offsetX, offsetY, stackScroll, 614 destinationStack); 615 screenPinningRequested = true; 616 } else { 617 transitionFuture = null; 618 } 619 if (boundsValid) { 620 opts.setBounds(bounds.isEmpty() ? null : bounds); 621 } 622 final ActivityOptions launchOpts = opts; 623 final boolean finalScreenPinningRequested = screenPinningRequested; 624 final OnAnimationStartedListener finalAnimStartedListener = animStartedListener; 625 final Runnable launchRunnable = new Runnable() { 626 @Override 627 public void run() { 628 if (task.isActive) { 629 // Bring an active task to the foreground 630 ssp.moveTaskToFront(task.key.id, launchOpts); 631 } else { 632 if (ssp.startActivityFromRecents(getContext(), task.key.id, task.activityLabel, 633 launchOpts)) { 634 if (!finalScreenPinningRequested) { 635 // If we have not requested this already to be run after the window 636 // transition, then just run it now 637 EventBus.getDefault().send(new ScreenPinningRequestEvent( 638 getContext(), ssp)); 639 } 640 } else { 641 // Dismiss the task and return the user to home if we fail to 642 // launch the task 643 EventBus.getDefault().send(new DismissTaskViewEvent(task, tv)); 644 if (mCb != null) { 645 mCb.onTaskLaunchFailed(); 646 } 647 648 // Keep track of failed launches 649 MetricsLogger.count(getContext(), "overview_task_launch_failed", 1); 650 } 651 } 652 if (transitionFuture != null) { 653 IRemoteCallback.Stub callback = new IRemoteCallback.Stub() { 654 @Override 655 public void sendResult(Bundle data) throws RemoteException { 656 post(new Runnable() { 657 @Override 658 public void run() { 659 if (finalAnimStartedListener != null) { 660 finalAnimStartedListener.onAnimationStarted(); 661 } 662 } 663 }); 664 } 665 }; 666 try { 667 WindowManagerGlobal.getWindowManagerService() 668 .overridePendingAppTransitionMultiThumbFuture(transitionFuture, 669 callback, true /* scaleUp */); 670 } catch (RemoteException e) { 671 Log.w(TAG, "Failed to override transition: " + e); 672 } 673 } 674 } 675 }; 676 677 // Keep track of the index of the task launch 678 int taskIndexFromFront = 0; 679 int taskIndex = stack.indexOfTask(task); 680 if (taskIndex > -1) { 681 taskIndexFromFront = stack.getTaskCount() - taskIndex - 1; 682 } 683 MetricsLogger.histogram(getContext(), "overview_task_launch_index", taskIndexFromFront); 684 685 // Launch the app right away if there is no task view, otherwise, animate the icon out first 686 if (tv == null) { 687 launchRunnable.run(); 688 } else { 689 if (task.group != null && !task.group.isFrontMostTask(task)) { 690 // For affiliated tasks that are behind other tasks, we must animate the front cards 691 // out of view before starting the task transition 692 stackView.startLaunchTaskAnimation(tv, launchRunnable, lockToTask); 693 } else { 694 // Otherwise, we can start the task transition immediately 695 stackView.startLaunchTaskAnimation(tv, null, lockToTask); 696 launchRunnable.run(); 697 } 698 } 699 } 700 701 @Override 702 public void onAllTaskViewsDismissed(ArrayList<Task> removedTasks) { 703 /* TODO: Not currently enabled 704 if (removedTasks != null) { 705 int taskCount = removedTasks.size(); 706 for (int i = 0; i < taskCount; i++) { 707 onTaskViewDismissed(removedTasks.get(i)); 708 } 709 } 710 */ 711 712 mCb.onAllTaskViewsDismissed(); 713 714 // Keep track of all-deletions 715 MetricsLogger.count(getContext(), "overview_task_all_dismissed", 1); 716 } 717 718 @Override 719 public void onTaskStackFilterTriggered() { 720 // Hide the search bar 721 if (mSearchBar != null) { 722 int filterDuration = getResources().getInteger( 723 R.integer.recents_filter_animate_current_views_duration); 724 mSearchBar.animate() 725 .alpha(0f) 726 .setStartDelay(0) 727 .setInterpolator(mFastOutSlowInInterpolator) 728 .setDuration(filterDuration) 729 .withLayer() 730 .start(); 731 } 732 } 733 734 @Override 735 public void onTaskStackUnfilterTriggered() { 736 // Show the search bar 737 if (mSearchBar != null) { 738 int filterDuration = getResources().getInteger( 739 R.integer.recents_filter_animate_new_views_duration); 740 mSearchBar.animate() 741 .alpha(1f) 742 .setStartDelay(0) 743 .setInterpolator(mFastOutSlowInInterpolator) 744 .setDuration(filterDuration) 745 .withLayer() 746 .start(); 747 } 748 } 749 750 /**** EventBus Events ****/ 751 752 public final void onBusEvent(DragStartEvent event) { 753 // Add the drag view 754 mDragView = event.dragView; 755 addView(mDragView); 756 757 updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), 758 TaskStack.DockState.NONE.viewState.dockAreaAlpha); 759 } 760 761 public final void onBusEvent(DragDropTargetChangedEvent event) { 762 if (event.dropTarget == null || !(event.dropTarget instanceof TaskStack.DockState)) { 763 updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), 764 TaskStack.DockState.NONE.viewState.dockAreaAlpha); 765 } else { 766 final TaskStack.DockState dockState = (TaskStack.DockState) event.dropTarget; 767 updateVisibleDockRegions(new TaskStack.DockState[] {dockState}, -1); 768 } 769 } 770 771 public final void onBusEvent(final DragEndEvent event) { 772 final Runnable cleanUpRunnable = new Runnable() { 773 @Override 774 public void run() { 775 // Remove the drag view 776 removeView(mDragView); 777 mDragView = null; 778 } 779 }; 780 781 // Animate the overlay alpha back to 0 782 updateVisibleDockRegions(null, -1); 783 784 if (event.dropTarget == null) { 785 // No drop targets for hit, so just animate the task back to its place 786 event.postAnimationTrigger.increment(); 787 event.postAnimationTrigger.addLastDecrementRunnable(new Runnable() { 788 @Override 789 public void run() { 790 cleanUpRunnable.run(); 791 } 792 }); 793 // Animate the task back to where it was before then clean up afterwards 794 TaskViewTransform taskTransform = new TaskViewTransform(); 795 TaskStackLayoutAlgorithm layoutAlgorithm = mTaskStackView.getStackAlgorithm(); 796 layoutAlgorithm.getStackTransform(event.task, 797 mTaskStackView.getScroller().getStackScroll(), taskTransform, null); 798 event.dragView.animate() 799 .scaleX(taskTransform.scale) 800 .scaleY(taskTransform.scale) 801 .translationX((layoutAlgorithm.mTaskRect.left - event.dragView.getLeft()) 802 + taskTransform.translationX) 803 .translationY((layoutAlgorithm.mTaskRect.top - event.dragView.getTop()) 804 + taskTransform.translationY) 805 .setDuration(175) 806 .setInterpolator(mFastOutSlowInInterpolator) 807 .withEndAction(event.postAnimationTrigger.decrementAsRunnable()) 808 .start(); 809 810 } else if (event.dropTarget instanceof TaskStack.DockState) { 811 final TaskStack.DockState dockState = (TaskStack.DockState) event.dropTarget; 812 813 // For now, just remove the drag view and the original task 814 // TODO: Animate the task to the drop target rect before launching it above 815 cleanUpRunnable.run(); 816 817 // Dock the task and launch it 818 SystemServicesProxy ssp = Recents.getSystemServices(); 819 ssp.startTaskInDockedMode(event.task.key.id, dockState.createMode); 820 launchTask(event.task, null, INVALID_STACK_ID); 821 822 } else { 823 // We dropped on another drop target, so just add the cleanup to the post animation 824 // trigger 825 event.postAnimationTrigger.addLastDecrementRunnable(new Runnable() { 826 @Override 827 public void run() { 828 cleanUpRunnable.run(); 829 } 830 }); 831 } 832 } 833 834 /** 835 * Updates the dock region to match the specified dock state. 836 */ 837 private void updateVisibleDockRegions(TaskStack.DockState[] newDockStates, int overrideAlpha) { 838 ArraySet<TaskStack.DockState> newDockStatesSet = new ArraySet<>(); 839 if (newDockStates != null) { 840 for (TaskStack.DockState dockState : newDockStates) { 841 newDockStatesSet.add(dockState); 842 } 843 } 844 for (TaskStack.DockState dockState : mVisibleDockStates) { 845 TaskStack.DockState.ViewState viewState = dockState.viewState; 846 if (newDockStates == null || !newDockStatesSet.contains(dockState)) { 847 // This is no longer visible, so hide it 848 viewState.startAlphaAnimation(0, 150); 849 } else { 850 // This state is now visible, update the bounds and show it 851 int alpha = (overrideAlpha != -1 ? overrideAlpha : viewState.dockAreaAlpha); 852 viewState.dockAreaOverlay.setBounds( 853 dockState.getDockedBounds(getMeasuredWidth(), getMeasuredHeight())); 854 viewState.dockAreaOverlay.setCallback(this); 855 viewState.startAlphaAnimation(alpha, 150); 856 } 857 } 858 } 859 860 public void setStackViewVisibility(int stackViewVisibility) { 861 mStackViewVisibility = stackViewVisibility; 862 if (mTaskStackView != null) { 863 mTaskStackView.setVisibility(stackViewVisibility); 864 invalidate(); 865 } 866 } 867} 868