RecentsView.java revision 5da4347b41b105dc6c6c01bf2810af3ce3013229
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.ActivityManager; 20import android.app.ActivityOptions; 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.LayoutInflater; 35import android.view.MotionEvent; 36import android.view.View; 37import android.view.WindowInsets; 38import android.view.WindowManagerGlobal; 39import android.view.animation.AnimationUtils; 40import android.view.animation.Interpolator; 41import android.widget.FrameLayout; 42import com.android.internal.logging.MetricsLogger; 43import com.android.systemui.R; 44import com.android.systemui.recents.Constants; 45import com.android.systemui.recents.Recents; 46import com.android.systemui.recents.RecentsActivity; 47import com.android.systemui.recents.RecentsActivityLaunchState; 48import com.android.systemui.recents.RecentsAppWidgetHostView; 49import com.android.systemui.recents.RecentsConfiguration; 50import com.android.systemui.recents.events.EventBus; 51import com.android.systemui.recents.events.activity.DismissRecentsToHomeAnimationStarted; 52import com.android.systemui.recents.events.component.ScreenPinningRequestEvent; 53import com.android.systemui.recents.events.ui.DismissTaskViewEvent; 54import com.android.systemui.recents.events.ui.dragndrop.DragDockStateChangedEvent; 55import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent; 56import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent; 57import com.android.systemui.recents.misc.SystemServicesProxy; 58import com.android.systemui.recents.model.Task; 59import com.android.systemui.recents.model.TaskStack; 60 61import java.util.ArrayList; 62import java.util.List; 63 64import static android.app.ActivityManager.StackId.FULLSCREEN_WORKSPACE_STACK_ID; 65import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID; 66import static android.app.ActivityManager.StackId.INVALID_STACK_ID; 67 68/** 69 * This view is the the top level layout that contains TaskStacks (which are laid out according 70 * to their SpaceNode bounds. 71 */ 72public class RecentsView extends FrameLayout implements TaskStackView.TaskStackViewCallbacks { 73 74 private static final String TAG = "RecentsView"; 75 private static final boolean DEBUG = false; 76 77 private static final boolean ADD_HEADER_BITMAP = true; 78 private int mStackViewVisibility = View.VISIBLE; 79 80 /** The RecentsView callbacks */ 81 public interface RecentsViewCallbacks { 82 public void onTaskViewClicked(); 83 public void onTaskLaunchFailed(); 84 public void onAllTaskViewsDismissed(); 85 public void runAfterPause(Runnable r); 86 } 87 88 LayoutInflater mInflater; 89 90 ArrayList<TaskStack> mStacks; 91 TaskStackView mTaskStackView; 92 RecentsAppWidgetHostView mSearchBar; 93 RecentsViewCallbacks mCb; 94 95 RecentsViewTouchHandler mTouchHandler; 96 DragView mDragView; 97 TaskStack.DockState[] mVisibleDockStates = { 98 TaskStack.DockState.LEFT, 99 TaskStack.DockState.TOP, 100 TaskStack.DockState.RIGHT, 101 TaskStack.DockState.BOTTOM, 102 }; 103 104 Interpolator mFastOutSlowInInterpolator; 105 106 Rect mSystemInsets = new Rect(); 107 108 public RecentsView(Context context) { 109 super(context); 110 } 111 112 public RecentsView(Context context, AttributeSet attrs) { 113 this(context, attrs, 0); 114 } 115 116 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr) { 117 this(context, attrs, defStyleAttr, 0); 118 } 119 120 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 121 super(context, attrs, defStyleAttr, defStyleRes); 122 setWillNotDraw(false); 123 mInflater = LayoutInflater.from(context); 124 mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(context, 125 com.android.internal.R.interpolator.fast_out_slow_in); 126 mTouchHandler = new RecentsViewTouchHandler(this); 127 } 128 129 /** Sets the callbacks */ 130 public void setCallbacks(RecentsViewCallbacks cb) { 131 mCb = cb; 132 } 133 134 /** Set/get the bsp root node */ 135 public void setTaskStack(TaskStack stack) { 136 RecentsConfiguration config = Recents.getConfiguration(); 137 if (config.getLaunchState().launchedReuseTaskStackViews) { 138 if (mTaskStackView != null) { 139 // If onRecentsHidden is not triggered, we need to the stack view again here 140 mTaskStackView.reset(); 141 mTaskStackView.setStack(stack); 142 } else { 143 mTaskStackView = new TaskStackView(getContext(), stack); 144 mTaskStackView.setCallbacks(this); 145 addView(mTaskStackView); 146 } 147 } else { 148 if (mTaskStackView != null) { 149 removeView(mTaskStackView); 150 } 151 mTaskStackView = new TaskStackView(getContext(), stack); 152 mTaskStackView.setCallbacks(this); 153 addView(mTaskStackView); 154 } 155 mTaskStackView.setVisibility(mStackViewVisibility); 156 157 // Trigger a new layout 158 requestLayout(); 159 } 160 161 /** Gets the next task in the stack - or if the last - the top task */ 162 public Task getNextTaskOrTopTask(Task taskToSearch) { 163 Task returnTask = null; 164 boolean found = false; 165 if (mTaskStackView != null) { 166 TaskStack stack = mTaskStackView.getStack(); 167 ArrayList<Task> taskList = stack.getTasks(); 168 // Iterate the stack views and try and find the focused task 169 for (int j = taskList.size() - 1; j >= 0; --j) { 170 Task task = taskList.get(j); 171 // Return the next task in the line. 172 if (found) 173 return task; 174 // Remember the first possible task as the top task. 175 if (returnTask == null) 176 returnTask = task; 177 if (task == taskToSearch) 178 found = true; 179 } 180 } 181 return returnTask; 182 } 183 184 /** Launches the focused task from the first stack if possible */ 185 public boolean launchFocusedTask() { 186 if (mTaskStackView != null) { 187 TaskStack stack = mTaskStackView.getStack(); 188 // Iterate the stack views and try and find the focused task 189 List<TaskView> taskViews = mTaskStackView.getTaskViews(); 190 int taskViewCount = taskViews.size(); 191 for (int j = 0; j < taskViewCount; j++) { 192 TaskView tv = taskViews.get(j); 193 Task task = tv.getTask(); 194 if (tv.isFocusedTask()) { 195 onTaskViewClicked(mTaskStackView, tv, stack, task, false, false, null, 196 INVALID_STACK_ID); 197 return true; 198 } 199 } 200 } 201 return false; 202 } 203 204 /** Launches a given task. */ 205 public boolean launchTask(Task task, Rect taskBounds, int destinationStack) { 206 if (mTaskStackView != null) { 207 TaskStack stack = mTaskStackView.getStack(); 208 // Iterate the stack views and try and find the given task. 209 List<TaskView> taskViews = mTaskStackView.getTaskViews(); 210 int taskViewCount = taskViews.size(); 211 for (int j = 0; j < taskViewCount; j++) { 212 TaskView tv = taskViews.get(j); 213 if (tv.getTask() == task) { 214 onTaskViewClicked(mTaskStackView, tv, stack, task, false, taskBounds != null, 215 taskBounds, destinationStack); 216 return true; 217 } 218 } 219 } 220 return false; 221 } 222 223 /** Requests all task stacks to start their enter-recents animation */ 224 public void startEnterRecentsAnimation(ViewAnimation.TaskViewEnterContext ctx) { 225 // We have to increment/decrement the post animation trigger in case there are no children 226 // to ensure that it runs 227 ctx.postAnimationTrigger.increment(); 228 if (mTaskStackView != null) { 229 mTaskStackView.startEnterRecentsAnimation(ctx); 230 } 231 ctx.postAnimationTrigger.decrement(); 232 } 233 234 /** Requests all task stacks to start their exit-recents animation */ 235 public void startExitToHomeAnimation(ViewAnimation.TaskViewExitContext ctx) { 236 // We have to increment/decrement the post animation trigger in case there are no children 237 // to ensure that it runs 238 ctx.postAnimationTrigger.increment(); 239 if (mTaskStackView != null) { 240 mTaskStackView.startExitToHomeAnimation(ctx); 241 } 242 ctx.postAnimationTrigger.decrement(); 243 244 // Notify of the exit animation 245 EventBus.getDefault().send(new DismissRecentsToHomeAnimationStarted()); 246 } 247 248 /** Adds the search bar */ 249 public void setSearchBar(RecentsAppWidgetHostView searchBar) { 250 // Remove the previous search bar if one exists 251 if (mSearchBar != null && indexOfChild(mSearchBar) > -1) { 252 removeView(mSearchBar); 253 } 254 // Add the new search bar 255 if (searchBar != null) { 256 mSearchBar = searchBar; 257 addView(mSearchBar); 258 } 259 } 260 261 /** Returns whether there is currently a search bar */ 262 public boolean hasValidSearchBar() { 263 return mSearchBar != null && !mSearchBar.isReinflateRequired(); 264 } 265 266 /** Sets the visibility of the search bar */ 267 public void setSearchBarVisibility(int visibility) { 268 if (mSearchBar != null) { 269 mSearchBar.setVisibility(visibility); 270 // Always bring the search bar to the top 271 mSearchBar.bringToFront(); 272 } 273 } 274 275 @Override 276 protected void onAttachedToWindow() { 277 EventBus.getDefault().register(this, RecentsActivity.EVENT_BUS_PRIORITY + 1); 278 EventBus.getDefault().register(mTouchHandler, RecentsActivity.EVENT_BUS_PRIORITY + 1); 279 super.onAttachedToWindow(); 280 } 281 282 @Override 283 protected void onDetachedFromWindow() { 284 super.onDetachedFromWindow(); 285 EventBus.getDefault().unregister(this); 286 EventBus.getDefault().unregister(mTouchHandler); 287 } 288 289 /** 290 * This is called with the full size of the window since we are handling our own insets. 291 */ 292 @Override 293 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 294 RecentsConfiguration config = Recents.getConfiguration(); 295 int width = MeasureSpec.getSize(widthMeasureSpec); 296 int height = MeasureSpec.getSize(heightMeasureSpec); 297 298 // Get the search bar bounds and measure the search bar layout 299 Rect searchBarSpaceBounds = new Rect(); 300 if (mSearchBar != null) { 301 config.getSearchBarBounds(new Rect(0, 0, width, height), mSystemInsets.top, 302 searchBarSpaceBounds); 303 mSearchBar.measure( 304 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.width(), MeasureSpec.EXACTLY), 305 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.height(), MeasureSpec.EXACTLY)); 306 } 307 308 Rect taskStackBounds = new Rect(); 309 config.getTaskStackBounds(new Rect(0, 0, width, height), mSystemInsets.top, 310 mSystemInsets.right, searchBarSpaceBounds, taskStackBounds); 311 if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { 312 mTaskStackView.setTaskStackBounds(taskStackBounds, mSystemInsets); 313 mTaskStackView.measure(widthMeasureSpec, heightMeasureSpec); 314 } 315 316 if (mDragView != null) { 317 mDragView.measure( 318 MeasureSpec.makeMeasureSpec(width, MeasureSpec.AT_MOST), 319 MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST)); 320 } 321 322 setMeasuredDimension(width, height); 323 } 324 325 /** 326 * This is called with the full size of the window since we are handling our own insets. 327 */ 328 @Override 329 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 330 RecentsConfiguration config = Recents.getConfiguration(); 331 332 // Get the search bar bounds so that we lay it out 333 Rect measuredRect = new Rect(0, 0, getMeasuredWidth(), getMeasuredHeight()); 334 Rect searchBarSpaceBounds = new Rect(); 335 if (mSearchBar != null) { 336 config.getSearchBarBounds(measuredRect, 337 mSystemInsets.top, searchBarSpaceBounds); 338 mSearchBar.layout(searchBarSpaceBounds.left, searchBarSpaceBounds.top, 339 searchBarSpaceBounds.right, searchBarSpaceBounds.bottom); 340 } 341 342 if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { 343 mTaskStackView.layout(left, top, left + getMeasuredWidth(), top + getMeasuredHeight()); 344 } 345 346 if (mDragView != null) { 347 mDragView.layout(left, top, left + mDragView.getMeasuredWidth(), 348 top + mDragView.getMeasuredHeight()); 349 } 350 } 351 352 @Override 353 public WindowInsets onApplyWindowInsets(WindowInsets insets) { 354 mSystemInsets.set(insets.getSystemWindowInsets()); 355 requestLayout(); 356 return insets.consumeSystemWindowInsets(); 357 } 358 359 @Override 360 public boolean onInterceptTouchEvent(MotionEvent ev) { 361 return mTouchHandler.onInterceptTouchEvent(ev); 362 } 363 364 @Override 365 public boolean onTouchEvent(MotionEvent ev) { 366 return mTouchHandler.onTouchEvent(ev); 367 } 368 369 @Override 370 protected void dispatchDraw(Canvas canvas) { 371 super.dispatchDraw(canvas); 372 for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { 373 Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; 374 if (d.getAlpha() > 0) { 375 d.draw(canvas); 376 } 377 } 378 } 379 380 @Override 381 protected boolean verifyDrawable(Drawable who) { 382 for (int i = mVisibleDockStates.length - 1; i >= 0; i--) { 383 Drawable d = mVisibleDockStates[i].viewState.dockAreaOverlay; 384 if (d == who) { 385 return true; 386 } 387 } 388 return super.verifyDrawable(who); 389 } 390 391 /** Unfilters any filtered stacks */ 392 public boolean unfilterFilteredStacks() { 393 if (mStacks != null) { 394 // Check if there are any filtered stacks and unfilter them before we back out of Recents 395 boolean stacksUnfiltered = false; 396 int numStacks = mStacks.size(); 397 for (int i = 0; i < numStacks; i++) { 398 TaskStack stack = mStacks.get(i); 399 if (stack.hasFilteredTasks()) { 400 stack.unfilterTasks(); 401 stacksUnfiltered = true; 402 } 403 } 404 return stacksUnfiltered; 405 } 406 return false; 407 } 408 409 public void disableLayersForOneFrame() { 410 if (mTaskStackView != null) { 411 mTaskStackView.disableLayersForOneFrame(); 412 } 413 } 414 415 private void postDrawHeaderThumbnailTransitionRunnable(final TaskStackView view, 416 final TaskView clickedView, final int offsetX, final int offsetY, 417 final float stackScroll, 418 final ActivityOptions.OnAnimationStartedListener animStartedListener, 419 final int destinationStack) { 420 Runnable r = new Runnable() { 421 @Override 422 public void run() { 423 overrideDrawHeaderThumbnailTransition(view, clickedView, offsetX, offsetY, 424 stackScroll, animStartedListener, destinationStack); 425 426 } 427 }; 428 429 mCb.runAfterPause(r); 430 } 431 432 private void overrideDrawHeaderThumbnailTransition(TaskStackView stackView, 433 TaskView clickedTask, int offsetX, int offsetY, float stackScroll, 434 final ActivityOptions.OnAnimationStartedListener animStartedListener, 435 int destinationStack) { 436 List<AppTransitionAnimationSpec> specs = getAppTransitionAnimationSpecs(stackView, 437 clickedTask, offsetX, offsetY, stackScroll, destinationStack); 438 if (specs == null) { 439 return; 440 } 441 442 IRemoteCallback.Stub callback = new IRemoteCallback.Stub() { 443 @Override 444 public void sendResult(Bundle data) throws RemoteException { 445 post(new Runnable() { 446 @Override 447 public void run() { 448 if (animStartedListener != null) { 449 animStartedListener.onAnimationStarted(); 450 } 451 } 452 }); 453 } 454 }; 455 456 AppTransitionAnimationSpec[] specsArray = 457 new AppTransitionAnimationSpec[specs.size()]; 458 try { 459 WindowManagerGlobal.getWindowManagerService().overridePendingAppTransitionMultiThumb( 460 specs.toArray(specsArray), callback, null, true /* scaleUp */); 461 462 } catch (RemoteException e) { 463 Log.w(TAG, "Error overriding app transition", e); 464 } 465 } 466 467 private List<AppTransitionAnimationSpec> getAppTransitionAnimationSpecs(TaskStackView stackView, 468 TaskView clickedTask, int offsetX, int offsetY, float stackScroll, 469 int destinationStack) { 470 final int targetStackId = destinationStack != INVALID_STACK_ID ? 471 destinationStack : clickedTask.getTask().key.stackId; 472 if (targetStackId != FREEFORM_WORKSPACE_STACK_ID 473 && targetStackId != FULLSCREEN_WORKSPACE_STACK_ID) { 474 return null; 475 } 476 // If this is a full screen stack, the transition will be towards the single, full screen 477 // task. We only need the transition spec for this task. 478 List<AppTransitionAnimationSpec> specs = new ArrayList<>(); 479 if (targetStackId == FULLSCREEN_WORKSPACE_STACK_ID) { 480 specs.add(createThumbnailHeaderAnimationSpec( 481 stackView, offsetX, offsetY, stackScroll, clickedTask, 482 clickedTask.getTask().key.id, ADD_HEADER_BITMAP)); 483 return specs; 484 } 485 // This is a free form stack or full screen stack, so there will be multiple windows 486 // animating from thumbnails. We need transition animation specs for all of them. 487 488 // We will use top and bottom task views as a base for tasks, that aren't visible on the 489 // screen. This is necessary for cascade recents list, where some of the tasks might be 490 // hidden. 491 List<TaskView> taskViews = stackView.getTaskViews(); 492 int childCount = taskViews.size(); 493 TaskView topChild = taskViews.get(0); 494 TaskView bottomChild = taskViews.get(childCount - 1); 495 SparseArray<TaskView> taskViewsByTaskId = new SparseArray<>(); 496 for (int i = 0; i < childCount; i++) { 497 TaskView taskView = taskViews.get(i); 498 taskViewsByTaskId.put(taskView.getTask().key.id, taskView); 499 } 500 501 TaskStack stack = stackView.getStack(); 502 // We go through all tasks now and for each generate transition animation spec. If there is 503 // a view associated with a task, we use that view as a base for the animation. If there 504 // isn't, we use bottom or top view, depending on which one would be closer to the task 505 // view if it existed. 506 ArrayList<Task> tasks = stack.getTasks(); 507 boolean passedClickedTask = false; 508 for (int i = 0, n = tasks.size(); i < n; i++) { 509 Task task = tasks.get(i); 510 TaskView taskView = taskViewsByTaskId.get(task.key.id); 511 if (taskView != null) { 512 specs.add(createThumbnailHeaderAnimationSpec(stackView, offsetX, offsetY, 513 stackScroll, taskView, taskView.getTask().key.id, ADD_HEADER_BITMAP)); 514 if (taskView == clickedTask) { 515 passedClickedTask = true; 516 } 517 } else { 518 taskView = passedClickedTask ? bottomChild : topChild; 519 specs.add(createThumbnailHeaderAnimationSpec(stackView, offsetX, offsetY, 520 stackScroll, taskView, task.key.id, !ADD_HEADER_BITMAP)); 521 } 522 } 523 524 return specs; 525 } 526 527 private AppTransitionAnimationSpec createThumbnailHeaderAnimationSpec(TaskStackView stackView, 528 int offsetX, int offsetY, float stackScroll, TaskView tv, int taskId, 529 boolean addHeaderBitmap) { 530 // Disable any focused state before we draw the header 531 // Upfront the processing of the thumbnail 532 if (tv.isFocusedTask()) { 533 tv.setFocusedState(false, false /* animated */, false /* requestViewFocus */); 534 } 535 TaskViewTransform transform = new TaskViewTransform(); 536 transform = stackView.getStackAlgorithm().getStackTransform(tv.mTask, stackScroll, 537 transform, null); 538 539 float scale = tv.getScaleX(); 540 int fromHeaderWidth = (int) (tv.mHeaderView.getMeasuredWidth() * scale); 541 int fromHeaderHeight = (int) (tv.mHeaderView.getMeasuredHeight() * scale); 542 543 Bitmap b = null; 544 if (addHeaderBitmap) { 545 b = Bitmap.createBitmap(fromHeaderWidth, fromHeaderHeight, 546 Bitmap.Config.ARGB_8888); 547 548 if (Constants.DebugFlags.App.EnableTransitionThumbnailDebugMode) { 549 b.eraseColor(0xFFff0000); 550 } else { 551 Canvas c = new Canvas(b); 552 c.scale(tv.getScaleX(), tv.getScaleY()); 553 tv.mHeaderView.draw(c); 554 c.setBitmap(null); 555 556 } 557 b = b.createAshmemBitmap(); 558 } 559 560 int[] pts = new int[2]; 561 tv.getLocationOnScreen(pts); 562 563 final int left = pts[0] + offsetX; 564 final int top = pts[1] + offsetY; 565 final Rect rect = new Rect(left, top, left + (int) transform.rect.width(), 566 top + (int) transform.rect.height()); 567 568 return new AppTransitionAnimationSpec(taskId, b, rect); 569 } 570 571 /** 572 * Cancels any running window transitions for the launched task (the task animating into 573 * Recents). 574 */ 575 private void cancelLaunchedTaskWindowTransition(final Task task) { 576 SystemServicesProxy ssp = Recents.getSystemServices(); 577 RecentsConfiguration config = Recents.getConfiguration(); 578 RecentsActivityLaunchState launchState = config.getLaunchState(); 579 if (launchState.launchedToTaskId != -1 && 580 launchState.launchedToTaskId != task.key.id) { 581 ssp.cancelWindowTransition(launchState.launchedToTaskId); 582 } 583 } 584 585 /**** TaskStackView.TaskStackCallbacks Implementation ****/ 586 587 @Override 588 public void onTaskViewClicked(final TaskStackView stackView, final TaskView tv, 589 final TaskStack stack, final Task task, final boolean lockToTask, 590 final boolean boundsValid, final Rect bounds, int destinationStack) { 591 // Notify any callbacks of the launching of a new task 592 if (mCb != null) { 593 mCb.onTaskViewClicked(); 594 } 595 596 // Upfront the processing of the thumbnail 597 TaskViewTransform transform = new TaskViewTransform(); 598 View sourceView; 599 int offsetX = 0; 600 int offsetY = 0; 601 float stackScroll = stackView.getScroller().getStackScroll(); 602 if (tv == null) { 603 // If there is no actual task view, then use the stack view as the source view 604 // and then offset to the expected transform rect, but bound this to just 605 // outside the display rect (to ensure we don't animate from too far away) 606 sourceView = stackView; 607 offsetX = (int) transform.rect.left; 608 offsetY = getMeasuredHeight(); 609 } else { 610 sourceView = tv.mThumbnailView; 611 } 612 613 // Compute the thumbnail to scale up from 614 final SystemServicesProxy ssp = Recents.getSystemServices(); 615 boolean screenPinningRequested = false; 616 ActivityOptions opts = null; 617 ActivityOptions.OnAnimationStartedListener animStartedListener = null; 618 if (task.thumbnail != null && task.thumbnail.getWidth() > 0 && 619 task.thumbnail.getHeight() > 0) { 620 animStartedListener = new ActivityOptions.OnAnimationStartedListener() { 621 @Override 622 public void onAnimationStarted() { 623 // If we are launching into another task, cancel the previous task's 624 // window transition 625 cancelLaunchedTaskWindowTransition(task); 626 627 if (lockToTask) { 628 // Request screen pinning after the animation runs 629 postDelayed(new Runnable() { 630 @Override 631 public void run() { 632 EventBus.getDefault().send(new ScreenPinningRequestEvent( 633 getContext(), ssp)); 634 } 635 }, 350); 636 } 637 } 638 }; 639 postDrawHeaderThumbnailTransitionRunnable(stackView, tv, offsetX, offsetY, stackScroll, 640 animStartedListener, destinationStack); 641 opts = ActivityOptions.makeThumbnailAspectScaleUpAnimation(sourceView, 642 Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8).createAshmemBitmap(), 643 offsetX, offsetY, (int) transform.rect.width(), (int) transform.rect.height(), 644 sourceView.getHandler(), animStartedListener); 645 screenPinningRequested = true; 646 } else { 647 opts = ActivityOptions.makeBasic(); 648 } 649 if (boundsValid) { 650 opts.setBounds(bounds.isEmpty() ? null : bounds); 651 } 652 final ActivityOptions launchOpts = opts; 653 final boolean finalScreenPinningRequested = screenPinningRequested; 654 final Runnable launchRunnable = new Runnable() { 655 @Override 656 public void run() { 657 if (task.isActive) { 658 // Bring an active task to the foreground 659 ssp.moveTaskToFront(task.key.id, launchOpts); 660 } else { 661 if (ssp.startActivityFromRecents(getContext(), task.key.id, task.activityLabel, 662 launchOpts)) { 663 if (!finalScreenPinningRequested) { 664 // If we have not requested this already to be run after the window 665 // transition, then just run it now 666 EventBus.getDefault().send(new ScreenPinningRequestEvent( 667 getContext(), ssp)); 668 } 669 } else { 670 // Dismiss the task and return the user to home if we fail to 671 // launch the task 672 EventBus.getDefault().send(new DismissTaskViewEvent(task, tv)); 673 if (mCb != null) { 674 mCb.onTaskLaunchFailed(); 675 } 676 677 // Keep track of failed launches 678 MetricsLogger.count(getContext(), "overview_task_launch_failed", 1); 679 } 680 } 681 } 682 }; 683 684 // Keep track of the index of the task launch 685 int taskIndexFromFront = 0; 686 int taskIndex = stack.indexOfTask(task); 687 if (taskIndex > -1) { 688 taskIndexFromFront = stack.getTaskCount() - taskIndex - 1; 689 } 690 MetricsLogger.histogram(getContext(), "overview_task_launch_index", taskIndexFromFront); 691 692 // Launch the app right away if there is no task view, otherwise, animate the icon out first 693 if (tv == null) { 694 launchRunnable.run(); 695 } else { 696 if (task.group != null && !task.group.isFrontMostTask(task)) { 697 // For affiliated tasks that are behind other tasks, we must animate the front cards 698 // out of view before starting the task transition 699 stackView.startLaunchTaskAnimation(tv, launchRunnable, lockToTask); 700 } else { 701 // Otherwise, we can start the task transition immediately 702 stackView.startLaunchTaskAnimation(tv, null, lockToTask); 703 launchRunnable.run(); 704 } 705 } 706 } 707 708 @Override 709 public void onAllTaskViewsDismissed(ArrayList<Task> removedTasks) { 710 /* TODO: Not currently enabled 711 if (removedTasks != null) { 712 int taskCount = removedTasks.size(); 713 for (int i = 0; i < taskCount; i++) { 714 onTaskViewDismissed(removedTasks.get(i)); 715 } 716 } 717 */ 718 719 mCb.onAllTaskViewsDismissed(); 720 721 // Keep track of all-deletions 722 MetricsLogger.count(getContext(), "overview_task_all_dismissed", 1); 723 } 724 725 @Override 726 public void onTaskStackFilterTriggered() { 727 // Hide the search bar 728 if (mSearchBar != null) { 729 int filterDuration = getResources().getInteger( 730 R.integer.recents_filter_animate_current_views_duration); 731 mSearchBar.animate() 732 .alpha(0f) 733 .setStartDelay(0) 734 .setInterpolator(mFastOutSlowInInterpolator) 735 .setDuration(filterDuration) 736 .withLayer() 737 .start(); 738 } 739 } 740 741 @Override 742 public void onTaskStackUnfilterTriggered() { 743 // Show the search bar 744 if (mSearchBar != null) { 745 int filterDuration = getResources().getInteger( 746 R.integer.recents_filter_animate_new_views_duration); 747 mSearchBar.animate() 748 .alpha(1f) 749 .setStartDelay(0) 750 .setInterpolator(mFastOutSlowInInterpolator) 751 .setDuration(filterDuration) 752 .withLayer() 753 .start(); 754 } 755 } 756 757 /**** EventBus Events ****/ 758 759 public final void onBusEvent(DragStartEvent event) { 760 // Add the drag view 761 mDragView = event.dragView; 762 addView(mDragView); 763 764 updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), 765 TaskStack.DockState.NONE.viewState.dockAreaAlpha); 766 } 767 768 public final void onBusEvent(DragDockStateChangedEvent event) { 769 if (event.dockState == TaskStack.DockState.NONE) { 770 updateVisibleDockRegions(mTouchHandler.getDockStatesForCurrentOrientation(), 771 TaskStack.DockState.NONE.viewState.dockAreaAlpha); 772 } else { 773 updateVisibleDockRegions(new TaskStack.DockState[] {event.dockState}, -1); 774 } 775 } 776 777 public final void onBusEvent(final DragEndEvent event) { 778 event.postAnimationTrigger.increment(); 779 event.postAnimationTrigger.addLastDecrementRunnable(new Runnable() { 780 @Override 781 public void run() { 782 // Remove the drag view 783 removeView(mDragView); 784 mDragView = null; 785 updateVisibleDockRegions(null, -1); 786 787 // Dock the new task if we are hovering over a valid dock state 788 if (event.dockState != TaskStack.DockState.NONE) { 789 SystemServicesProxy ssp = Recents.getSystemServices(); 790 ssp.startTaskInDockedMode(event.task.key.id, event.dockState.createMode); 791 launchTask(event.task, null, INVALID_STACK_ID); 792 } 793 } 794 }); 795 if (event.dockState == TaskStack.DockState.NONE) { 796 // Animate the alpha back to what it was before 797 Rect taskBounds = mTaskStackView.getStackAlgorithm().getUntransformedTaskViewBounds(); 798 int left = taskBounds.left + (int) ((1f - event.taskView.getScaleX()) * taskBounds.width()) / 2; 799 int top = taskBounds.top + (int) ((1f - event.taskView.getScaleY()) * taskBounds.height()) / 2; 800 event.dragView.animate() 801 .scaleX(1f) 802 .scaleY(1f) 803 .translationX(left + event.taskView.getTranslationX()) 804 .translationY(top + event.taskView.getTranslationY()) 805 .setDuration(175) 806 .setInterpolator(mFastOutSlowInInterpolator) 807 .withEndAction(event.postAnimationTrigger.decrementAsRunnable()) 808 .start(); 809 810 // Animate the overlay alpha back to 0 811 updateVisibleDockRegions(null, -1); 812 } else { 813 event.postAnimationTrigger.decrement(); 814 } 815 } 816 817 /** 818 * Updates the dock region to match the specified dock state. 819 */ 820 private void updateVisibleDockRegions(TaskStack.DockState[] newDockStates, int overrideAlpha) { 821 ArraySet<TaskStack.DockState> newDockStatesSet = new ArraySet<>(); 822 if (newDockStates != null) { 823 for (TaskStack.DockState dockState : newDockStates) { 824 newDockStatesSet.add(dockState); 825 } 826 } 827 for (TaskStack.DockState dockState : mVisibleDockStates) { 828 TaskStack.DockState.ViewState viewState = dockState.viewState; 829 if (newDockStates == null || !newDockStatesSet.contains(dockState)) { 830 // This is no longer visible, so hide it 831 viewState.startAlphaAnimation(0, 150); 832 } else { 833 // This state is now visible, update the bounds and show it 834 int alpha = (overrideAlpha != -1 ? overrideAlpha : viewState.dockAreaAlpha); 835 viewState.dockAreaOverlay.setBounds( 836 dockState.getDockedBounds(getMeasuredWidth(), getMeasuredHeight())); 837 viewState.dockAreaOverlay.setCallback(this); 838 viewState.startAlphaAnimation(alpha, 150); 839 } 840 } 841 } 842 843 public void setStackViewVisibility(int stackViewVisibility) { 844 mStackViewVisibility = stackViewVisibility; 845 if (mTaskStackView != null) { 846 mTaskStackView.setVisibility(stackViewVisibility); 847 invalidate(); 848 } 849 } 850} 851