RecentsView.java revision be7607af8875236b9cf7bdb5f5aa089c207529af
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.ColorDrawable; 26import android.os.Bundle; 27import android.os.IRemoteCallback; 28import android.os.RemoteException; 29import android.util.AttributeSet; 30import android.util.Log; 31import android.util.SparseArray; 32import android.view.AppTransitionAnimationSpec; 33import android.view.LayoutInflater; 34import android.view.MotionEvent; 35import android.view.View; 36import android.view.WindowInsets; 37import android.view.WindowManagerGlobal; 38import android.view.animation.AccelerateInterpolator; 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.RecentsActivity; 46import com.android.systemui.recents.RecentsAppWidgetHostView; 47import com.android.systemui.recents.RecentsConfiguration; 48import com.android.systemui.recents.events.EventBus; 49import com.android.systemui.recents.events.ui.DismissTaskEvent; 50import com.android.systemui.recents.events.ui.dragndrop.DragDockStateChangedEvent; 51import com.android.systemui.recents.events.ui.dragndrop.DragEndEvent; 52import com.android.systemui.recents.events.ui.dragndrop.DragStartEvent; 53import com.android.systemui.recents.misc.SystemServicesProxy; 54import com.android.systemui.recents.model.RecentsTaskLoader; 55import com.android.systemui.recents.model.Task; 56import com.android.systemui.recents.model.TaskStack; 57 58import java.util.ArrayList; 59import java.util.List; 60 61/** 62 * This view is the the top level layout that contains TaskStacks (which are laid out according 63 * to their SpaceNode bounds. 64 */ 65public class RecentsView extends FrameLayout implements TaskStackView.TaskStackViewCallbacks { 66 67 private static final String TAG = "RecentsView"; 68 69 private static final boolean ADD_HEADER_BITMAP = true; 70 71 /** The RecentsView callbacks */ 72 public interface RecentsViewCallbacks { 73 public void onTaskViewClicked(); 74 public void onTaskLaunchFailed(); 75 public void onAllTaskViewsDismissed(); 76 public void onExitToHomeAnimationTriggered(); 77 public void onScreenPinningRequest(); 78 public void runAfterPause(Runnable r); 79 } 80 81 RecentsConfiguration mConfig; 82 LayoutInflater mInflater; 83 84 ArrayList<TaskStack> mStacks; 85 TaskStackView mTaskStackView; 86 RecentsAppWidgetHostView mSearchBar; 87 RecentsViewCallbacks mCb; 88 89 RecentsViewTouchHandler mTouchHandler; 90 DragView mDragView; 91 ColorDrawable mDockRegionOverlay; 92 93 Interpolator mFastOutSlowInInterpolator; 94 95 Rect mSystemInsets = new Rect(); 96 97 public RecentsView(Context context) { 98 super(context); 99 } 100 101 public RecentsView(Context context, AttributeSet attrs) { 102 this(context, attrs, 0); 103 } 104 105 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr) { 106 this(context, attrs, defStyleAttr, 0); 107 } 108 109 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 110 super(context, attrs, defStyleAttr, defStyleRes); 111 setWillNotDraw(false); 112 mConfig = RecentsConfiguration.getInstance(); 113 mInflater = LayoutInflater.from(context); 114 mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(context, 115 com.android.internal.R.interpolator.fast_out_slow_in); 116 mTouchHandler = new RecentsViewTouchHandler(this); 117 mDockRegionOverlay = new ColorDrawable(0x66000000); 118 mDockRegionOverlay.setAlpha(0); 119 } 120 121 /** Sets the callbacks */ 122 public void setCallbacks(RecentsViewCallbacks cb) { 123 mCb = cb; 124 } 125 126 /** Set/get the bsp root node */ 127 public void setTaskStack(TaskStack stack) { 128 if (mConfig.getLaunchState().launchedReuseTaskStackViews) { 129 if (mTaskStackView != null) { 130 // If onRecentsHidden is not triggered, we need to the stack view again here 131 mTaskStackView.reset(); 132 mTaskStackView.setStack(stack); 133 } else { 134 mTaskStackView = new TaskStackView(getContext(), stack); 135 mTaskStackView.setCallbacks(this); 136 addView(mTaskStackView); 137 } 138 } else { 139 if (mTaskStackView != null) { 140 removeView(mTaskStackView); 141 } 142 mTaskStackView = new TaskStackView(getContext(), stack); 143 mTaskStackView.setCallbacks(this); 144 addView(mTaskStackView); 145 } 146 147 // Trigger a new layout 148 requestLayout(); 149 } 150 151 /** Gets the next task in the stack - or if the last - the top task */ 152 public Task getNextTaskOrTopTask(Task taskToSearch) { 153 Task returnTask = null; 154 boolean found = false; 155 if (mTaskStackView != null) { 156 TaskStack stack = mTaskStackView.getStack(); 157 ArrayList<Task> taskList = stack.getTasks(); 158 // Iterate the stack views and try and find the focused task 159 for (int j = taskList.size() - 1; j >= 0; --j) { 160 Task task = taskList.get(j); 161 // Return the next task in the line. 162 if (found) 163 return task; 164 // Remember the first possible task as the top task. 165 if (returnTask == null) 166 returnTask = task; 167 if (task == taskToSearch) 168 found = true; 169 } 170 } 171 return returnTask; 172 } 173 174 /** Launches the focused task from the first stack if possible */ 175 public boolean launchFocusedTask() { 176 if (mTaskStackView != null) { 177 TaskStack stack = mTaskStackView.getStack(); 178 // Iterate the stack views and try and find the focused task 179 List<TaskView> taskViews = mTaskStackView.getTaskViews(); 180 int taskViewCount = taskViews.size(); 181 for (int j = 0; j < taskViewCount; j++) { 182 TaskView tv = taskViews.get(j); 183 Task task = tv.getTask(); 184 if (tv.isFocusedTask()) { 185 onTaskViewClicked(mTaskStackView, tv, stack, task, false, false, null); 186 return true; 187 } 188 } 189 } 190 return false; 191 } 192 193 /** Launches a given task. */ 194 public boolean launchTask(Task task, Rect taskBounds) { 195 if (mTaskStackView != null) { 196 TaskStack stack = mTaskStackView.getStack(); 197 // Iterate the stack views and try and find the given task. 198 List<TaskView> taskViews = mTaskStackView.getTaskViews(); 199 int taskViewCount = taskViews.size(); 200 for (int j = 0; j < taskViewCount; j++) { 201 TaskView tv = taskViews.get(j); 202 if (tv.getTask() == task) { 203 onTaskViewClicked(mTaskStackView, tv, stack, task, false, taskBounds != null, 204 taskBounds); 205 return true; 206 } 207 } 208 } 209 return false; 210 } 211 212 /** Launches the task that Recents was launched from, if possible */ 213 public boolean launchPreviousTask() { 214 if (mTaskStackView != null) { 215 TaskStack stack = mTaskStackView.getStack(); 216 ArrayList<Task> tasks = stack.getTasks(); 217 218 // Find the launch task in the stack 219 // TODO: replace this with an event from RecentsActivity 220 if (!tasks.isEmpty()) { 221 int taskCount = tasks.size(); 222 for (int j = 0; j < taskCount; j++) { 223 if (tasks.get(j).isLaunchTarget) { 224 Task task = tasks.get(j); 225 TaskView tv = mTaskStackView.getChildViewForTask(task); 226 onTaskViewClicked(mTaskStackView, tv, stack, task, false, false, null); 227 return true; 228 } 229 } 230 } 231 } 232 return false; 233 } 234 235 /** Requests all task stacks to start their enter-recents animation */ 236 public void startEnterRecentsAnimation(ViewAnimation.TaskViewEnterContext ctx) { 237 // We have to increment/decrement the post animation trigger in case there are no children 238 // to ensure that it runs 239 ctx.postAnimationTrigger.increment(); 240 if (mTaskStackView != null) { 241 mTaskStackView.startEnterRecentsAnimation(ctx); 242 } 243 ctx.postAnimationTrigger.decrement(); 244 } 245 246 /** Requests all task stacks to start their exit-recents animation */ 247 public void startExitToHomeAnimation(ViewAnimation.TaskViewExitContext ctx) { 248 // We have to increment/decrement the post animation trigger in case there are no children 249 // to ensure that it runs 250 ctx.postAnimationTrigger.increment(); 251 if (mTaskStackView != null) { 252 mTaskStackView.startExitToHomeAnimation(ctx); 253 } 254 ctx.postAnimationTrigger.decrement(); 255 256 // Notify of the exit animation 257 mCb.onExitToHomeAnimationTriggered(); 258 } 259 260 /** Adds the search bar */ 261 public void setSearchBar(RecentsAppWidgetHostView searchBar) { 262 // Remove the previous search bar if one exists 263 if (mSearchBar != null && indexOfChild(mSearchBar) > -1) { 264 removeView(mSearchBar); 265 } 266 // Add the new search bar 267 if (searchBar != null) { 268 mSearchBar = searchBar; 269 addView(mSearchBar); 270 } 271 } 272 273 /** Returns whether there is currently a search bar */ 274 public boolean hasValidSearchBar() { 275 return mSearchBar != null && !mSearchBar.isReinflateRequired(); 276 } 277 278 /** Sets the visibility of the search bar */ 279 public void setSearchBarVisibility(int visibility) { 280 if (mSearchBar != null) { 281 mSearchBar.setVisibility(visibility); 282 // Always bring the search bar to the top 283 mSearchBar.bringToFront(); 284 } 285 } 286 287 @Override 288 protected void onAttachedToWindow() { 289 EventBus.getDefault().register(this, RecentsActivity.EVENT_BUS_PRIORITY + 1); 290 EventBus.getDefault().register(mTouchHandler, RecentsActivity.EVENT_BUS_PRIORITY + 1); 291 super.onAttachedToWindow(); 292 } 293 294 @Override 295 protected void onDetachedFromWindow() { 296 super.onDetachedFromWindow(); 297 EventBus.getDefault().unregister(this); 298 EventBus.getDefault().unregister(mTouchHandler); 299 } 300 301 /** 302 * This is called with the full size of the window since we are handling our own insets. 303 */ 304 @Override 305 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 306 int width = MeasureSpec.getSize(widthMeasureSpec); 307 int height = MeasureSpec.getSize(heightMeasureSpec); 308 309 // Get the search bar bounds and measure the search bar layout 310 Rect searchBarSpaceBounds = new Rect(); 311 if (mSearchBar != null) { 312 mConfig.getSearchBarBounds(new Rect(0, 0, width, height), mSystemInsets.top, 313 searchBarSpaceBounds); 314 mSearchBar.measure( 315 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.width(), MeasureSpec.EXACTLY), 316 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.height(), MeasureSpec.EXACTLY)); 317 } 318 319 Rect taskStackBounds = new Rect(); 320 mConfig.getAvailableTaskStackBounds(new Rect(0, 0, width, height), mSystemInsets.top, 321 mSystemInsets.right, searchBarSpaceBounds, taskStackBounds); 322 if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { 323 mTaskStackView.setTaskStackBounds(taskStackBounds); 324 mTaskStackView.measure(widthMeasureSpec, heightMeasureSpec); 325 } 326 327 if (mDragView != null) { 328 mDragView.measure( 329 MeasureSpec.makeMeasureSpec(width, MeasureSpec.AT_MOST), 330 MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST)); 331 } 332 333 setMeasuredDimension(width, height); 334 } 335 336 /** 337 * This is called with the full size of the window since we are handling our own insets. 338 */ 339 @Override 340 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 341 // Get the search bar bounds so that we lay it out 342 Rect measuredRect = new Rect(0, 0, getMeasuredWidth(), getMeasuredHeight()); 343 Rect searchBarSpaceBounds = new Rect(); 344 if (mSearchBar != null) { 345 mConfig.getSearchBarBounds(measuredRect, 346 mSystemInsets.top, searchBarSpaceBounds); 347 mSearchBar.layout(searchBarSpaceBounds.left, searchBarSpaceBounds.top, 348 searchBarSpaceBounds.right, searchBarSpaceBounds.bottom); 349 } 350 351 if (mTaskStackView != null && mTaskStackView.getVisibility() != GONE) { 352 mTaskStackView.layout(left, top, left + getMeasuredWidth(), top + getMeasuredHeight()); 353 } 354 355 if (mDragView != null) { 356 mDragView.layout(left, top, left + mDragView.getMeasuredWidth(), 357 top + mDragView.getMeasuredHeight()); 358 } 359 } 360 361 @Override 362 public WindowInsets onApplyWindowInsets(WindowInsets insets) { 363 mSystemInsets.set(insets.getSystemWindowInsets()); 364 requestLayout(); 365 return insets.consumeSystemWindowInsets(); 366 } 367 368 @Override 369 public boolean onInterceptTouchEvent(MotionEvent ev) { 370 return mTouchHandler.onInterceptTouchEvent(ev); 371 } 372 373 @Override 374 public boolean onTouchEvent(MotionEvent ev) { 375 return mTouchHandler.onTouchEvent(ev); 376 } 377 378 @Override 379 protected void dispatchDraw(Canvas canvas) { 380 super.dispatchDraw(canvas); 381 if (mDockRegionOverlay.getAlpha() > 0) { 382 mDockRegionOverlay.draw(canvas); 383 } 384 } 385 386 /** Notifies each task view of the user interaction. */ 387 public void onUserInteraction() { 388 // Get the first stack view 389 if (mTaskStackView != null) { 390 mTaskStackView.onUserInteraction(); 391 } 392 } 393 394 /** Focuses the next task in the first stack view */ 395 public void focusNextTask(boolean forward) { 396 // Get the first stack view 397 if (mTaskStackView != null) { 398 mTaskStackView.focusNextTask(forward, true); 399 } 400 } 401 402 /** Dismisses the focused task. */ 403 public void dismissFocusedTask() { 404 // Get the first stack view 405 if (mTaskStackView != null) { 406 mTaskStackView.dismissFocusedTask(); 407 } 408 } 409 410 /** Unfilters any filtered stacks */ 411 public boolean unfilterFilteredStacks() { 412 if (mStacks != null) { 413 // Check if there are any filtered stacks and unfilter them before we back out of Recents 414 boolean stacksUnfiltered = false; 415 int numStacks = mStacks.size(); 416 for (int i = 0; i < numStacks; i++) { 417 TaskStack stack = mStacks.get(i); 418 if (stack.hasFilteredTasks()) { 419 stack.unfilterTasks(); 420 stacksUnfiltered = true; 421 } 422 } 423 return stacksUnfiltered; 424 } 425 return false; 426 } 427 428 public void disableLayersForOneFrame() { 429 if (mTaskStackView != null) { 430 mTaskStackView.disableLayersForOneFrame(); 431 } 432 } 433 434 private void postDrawHeaderThumbnailTransitionRunnable(final TaskStackView view, 435 final TaskView clickedView, final int offsetX, final int offsetY, 436 final float stackScroll, 437 final ActivityOptions.OnAnimationStartedListener animStartedListener) { 438 Runnable r = new Runnable() { 439 @Override 440 public void run() { 441 overrideDrawHeaderThumbnailTransition(view, clickedView, offsetX, offsetY, 442 stackScroll, animStartedListener); 443 444 } 445 }; 446 447 mCb.runAfterPause(r); 448 } 449 450 private void overrideDrawHeaderThumbnailTransition(TaskStackView stackView, 451 TaskView clickedTask, int offsetX, int offsetY, float stackScroll, 452 final ActivityOptions.OnAnimationStartedListener animStartedListener) { 453 List<AppTransitionAnimationSpec> specs = getAppTransitionAnimationSpecs(stackView, 454 clickedTask, offsetX, offsetY, stackScroll); 455 if (specs == null) { 456 return; 457 } 458 459 IRemoteCallback.Stub callback = new IRemoteCallback.Stub() { 460 @Override 461 public void sendResult(Bundle data) throws RemoteException { 462 post(new Runnable() { 463 @Override 464 public void run() { 465 if (animStartedListener != null) { 466 animStartedListener.onAnimationStarted(); 467 } 468 } 469 }); 470 } 471 }; 472 473 AppTransitionAnimationSpec[] specsArray = 474 new AppTransitionAnimationSpec[specs.size()]; 475 try { 476 WindowManagerGlobal.getWindowManagerService().overridePendingAppTransitionMultiThumb( 477 specs.toArray(specsArray), callback, true /* scaleUp */); 478 479 } catch (RemoteException e) { 480 Log.w(TAG, "Error overriding app transition", e); 481 } 482 } 483 484 private List<AppTransitionAnimationSpec> getAppTransitionAnimationSpecs(TaskStackView stackView, 485 TaskView clickedTask, int offsetX, int offsetY, float stackScroll) { 486 final int targetStackId = clickedTask.getTask().key.stackId; 487 if (targetStackId != ActivityManager.FREEFORM_WORKSPACE_STACK_ID 488 && targetStackId != ActivityManager.FULLSCREEN_WORKSPACE_STACK_ID) { 489 return null; 490 } 491 // If this is a full screen stack, the transition will be towards the single, full screen 492 // task. We only need the transition spec for this task. 493 List<AppTransitionAnimationSpec> specs = new ArrayList<>(); 494 if (targetStackId == ActivityManager.FULLSCREEN_WORKSPACE_STACK_ID) { 495 specs.add(createThumbnailHeaderAnimationSpec( 496 stackView, offsetX, offsetY, stackScroll, clickedTask, 497 clickedTask.getTask().key.id, ADD_HEADER_BITMAP)); 498 return specs; 499 } 500 // This is a free form stack or full screen stack, so there will be multiple windows 501 // animating from thumbnails. We need transition animation specs for all of them. 502 503 // We will use top and bottom task views as a base for tasks, that aren't visible on the 504 // screen. This is necessary for cascade recents list, where some of the tasks might be 505 // hidden. 506 List<TaskView> taskViews = stackView.getTaskViews(); 507 int childCount = taskViews.size(); 508 TaskView topChild = taskViews.get(0); 509 TaskView bottomChild = taskViews.get(childCount - 1); 510 SparseArray<TaskView> taskViewsByTaskId = new SparseArray<>(); 511 for (int i = 0; i < childCount; i++) { 512 TaskView taskView = taskViews.get(i); 513 taskViewsByTaskId.put(taskView.getTask().key.id, taskView); 514 } 515 516 TaskStack stack = stackView.getStack(); 517 // We go through all tasks now and for each generate transition animation spec. If there is 518 // a view associated with a task, we use that view as a base for the animation. If there 519 // isn't, we use bottom or top view, depending on which one would be closer to the task 520 // view if it existed. 521 ArrayList<Task> tasks = stack.getTasks(); 522 boolean passedClickedTask = false; 523 for (int i = 0, n = tasks.size(); i < n; i++) { 524 Task task = tasks.get(i); 525 TaskView taskView = taskViewsByTaskId.get(task.key.id); 526 if (taskView != null) { 527 specs.add(createThumbnailHeaderAnimationSpec(stackView, offsetX, offsetY, 528 stackScroll, taskView, taskView.getTask().key.id, ADD_HEADER_BITMAP)); 529 if (taskView == clickedTask) { 530 passedClickedTask = true; 531 } 532 } else { 533 taskView = passedClickedTask ? bottomChild : topChild; 534 specs.add(createThumbnailHeaderAnimationSpec(stackView, offsetX, offsetY, 535 stackScroll, taskView, task.key.id, !ADD_HEADER_BITMAP)); 536 } 537 } 538 539 return specs; 540 } 541 542 private AppTransitionAnimationSpec createThumbnailHeaderAnimationSpec(TaskStackView stackView, 543 int offsetX, int offsetY, float stackScroll, TaskView tv, int taskId, 544 boolean addHeaderBitmap) { 545 // Disable any focused state before we draw the header 546 // Upfront the processing of the thumbnail 547 if (tv.isFocusedTask()) { 548 tv.unsetFocusedTask(); 549 } 550 TaskViewTransform transform = new TaskViewTransform(); 551 transform = stackView.getStackAlgorithm().getStackTransform(tv.mTask, stackScroll, 552 transform, null); 553 554 float scale = tv.getScaleX(); 555 int fromHeaderWidth = (int) (tv.mHeaderView.getMeasuredWidth() * scale); 556 int fromHeaderHeight = (int) (tv.mHeaderView.getMeasuredHeight() * scale); 557 558 Bitmap b = null; 559 if (addHeaderBitmap) { 560 b = Bitmap.createBitmap(fromHeaderWidth, fromHeaderHeight, 561 Bitmap.Config.ARGB_8888); 562 563 if (Constants.DebugFlags.App.EnableTransitionThumbnailDebugMode) { 564 b.eraseColor(0xFFff0000); 565 } else { 566 Canvas c = new Canvas(b); 567 c.scale(tv.getScaleX(), tv.getScaleY()); 568 tv.mHeaderView.draw(c); 569 c.setBitmap(null); 570 571 } 572 b = b.createAshmemBitmap(); 573 } 574 575 int[] pts = new int[2]; 576 tv.getLocationOnScreen(pts); 577 578 final int left = pts[0] + offsetX; 579 final int top = pts[1] + offsetY; 580 final Rect rect = new Rect(left, top, left + transform.rect.width(), 581 top + transform.rect.height()); 582 583 return new AppTransitionAnimationSpec(taskId, b, rect); 584 } 585 586 /**** TaskStackView.TaskStackCallbacks Implementation ****/ 587 588 @Override 589 public void onTaskViewClicked(final TaskStackView stackView, final TaskView tv, 590 final TaskStack stack, final Task task, final boolean lockToTask, 591 final boolean boundsValid, final Rect bounds) { 592 593 // Notify any callbacks of the launching of a new task 594 if (mCb != null) { 595 mCb.onTaskViewClicked(); 596 } 597 598 // Upfront the processing of the thumbnail 599 TaskViewTransform transform = new TaskViewTransform(); 600 View sourceView; 601 int offsetX = 0; 602 int offsetY = 0; 603 float stackScroll = stackView.getScroller().getStackScroll(); 604 if (tv == null) { 605 // If there is no actual task view, then use the stack view as the source view 606 // and then offset to the expected transform rect, but bound this to just 607 // outside the display rect (to ensure we don't animate from too far away) 608 sourceView = stackView; 609 offsetX = transform.rect.left; 610 offsetY = getMeasuredHeight(); 611 } else { 612 sourceView = tv.mThumbnailView; 613 } 614 615 // Compute the thumbnail to scale up from 616 final SystemServicesProxy ssp = 617 RecentsTaskLoader.getInstance().getSystemServicesProxy(); 618 ActivityOptions opts = null; 619 ActivityOptions.OnAnimationStartedListener animStartedListener = null; 620 if (task.thumbnail != null && task.thumbnail.getWidth() > 0 && 621 task.thumbnail.getHeight() > 0) { 622 if (lockToTask) { 623 animStartedListener = new ActivityOptions.OnAnimationStartedListener() { 624 boolean mTriggered = false; 625 @Override 626 public void onAnimationStarted() { 627 if (!mTriggered) { 628 postDelayed(new Runnable() { 629 @Override 630 public void run() { 631 mCb.onScreenPinningRequest(); 632 } 633 }, 350); 634 mTriggered = true; 635 } 636 } 637 }; 638 } 639 postDrawHeaderThumbnailTransitionRunnable(stackView, tv, offsetX, offsetY, stackScroll, 640 animStartedListener); 641 opts = ActivityOptions.makeThumbnailAspectScaleUpAnimation(sourceView, 642 Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8).createAshmemBitmap(), 643 offsetX, offsetY, transform.rect.width(), transform.rect.height(), 644 sourceView.getHandler(), animStartedListener); 645 } else { 646 opts = ActivityOptions.makeBasic(); 647 } 648 if (boundsValid) { 649 opts.setBounds(bounds.isEmpty() ? null : bounds); 650 } 651 final ActivityOptions launchOpts = opts; 652 final boolean screenPinningRequested = (animStartedListener == null) && lockToTask; 653 final Runnable launchRunnable = new Runnable() { 654 @Override 655 public void run() { 656 if (task.isActive) { 657 // Bring an active task to the foreground 658 ssp.moveTaskToFront(task.key.id, launchOpts); 659 } else { 660 if (ssp.startActivityFromRecents(getContext(), task.key.id, 661 task.activityLabel, launchOpts)) { 662 if (screenPinningRequested) { 663 mCb.onScreenPinningRequest(); 664 } 665 } else { 666 // Dismiss the task and return the user to home if we fail to 667 // launch the task 668 EventBus.getDefault().send(new DismissTaskEvent(task, tv)); 669 if (mCb != null) { 670 mCb.onTaskLaunchFailed(); 671 } 672 673 // Keep track of failed launches 674 MetricsLogger.count(getContext(), "overview_task_launch_failed", 1); 675 } 676 } 677 } 678 }; 679 680 // Keep track of the index of the task launch 681 int taskIndexFromFront = 0; 682 int taskIndex = stack.indexOfTask(task); 683 if (taskIndex > -1) { 684 taskIndexFromFront = stack.getTaskCount() - taskIndex - 1; 685 } 686 MetricsLogger.histogram(getContext(), "overview_task_launch_index", taskIndexFromFront); 687 688 // Launch the app right away if there is no task view, otherwise, animate the icon out first 689 if (tv == null) { 690 launchRunnable.run(); 691 } else { 692 if (task.group != null && !task.group.isFrontMostTask(task)) { 693 // For affiliated tasks that are behind other tasks, we must animate the front cards 694 // out of view before starting the task transition 695 stackView.startLaunchTaskAnimation(tv, launchRunnable, lockToTask); 696 } else { 697 // Otherwise, we can start the task transition immediately 698 stackView.startLaunchTaskAnimation(tv, null, lockToTask); 699 launchRunnable.run(); 700 } 701 } 702 } 703 704 @Override 705 public void onAllTaskViewsDismissed(ArrayList<Task> removedTasks) { 706 /* TODO: Not currently enabled 707 if (removedTasks != null) { 708 int taskCount = removedTasks.size(); 709 for (int i = 0; i < taskCount; i++) { 710 onTaskViewDismissed(removedTasks.get(i)); 711 } 712 } 713 */ 714 715 mCb.onAllTaskViewsDismissed(); 716 717 // Keep track of all-deletions 718 MetricsLogger.count(getContext(), "overview_task_all_dismissed", 1); 719 } 720 721 /** Final callback after Recents is finally hidden. */ 722 public void onRecentsHidden() { 723 // Notify each task stack view 724 if (mTaskStackView != null) { 725 mTaskStackView.onRecentsHidden(); 726 } 727 } 728 729 @Override 730 public void onTaskStackFilterTriggered() { 731 // Hide the search bar 732 if (mSearchBar != null) { 733 int filterDuration = getResources().getInteger( 734 R.integer.recents_filter_animate_current_views_duration); 735 mSearchBar.animate() 736 .alpha(0f) 737 .setStartDelay(0) 738 .setInterpolator(mFastOutSlowInInterpolator) 739 .setDuration(filterDuration) 740 .withLayer() 741 .start(); 742 } 743 } 744 745 @Override 746 public void onTaskStackUnfilterTriggered() { 747 // Show the search bar 748 if (mSearchBar != null) { 749 int filterDuration = getResources().getInteger( 750 R.integer.recents_filter_animate_new_views_duration); 751 mSearchBar.animate() 752 .alpha(1f) 753 .setStartDelay(0) 754 .setInterpolator(mFastOutSlowInInterpolator) 755 .setDuration(filterDuration) 756 .withLayer() 757 .start(); 758 } 759 } 760 761 /**** EventBus Events ****/ 762 763 public final void onBusEvent(DragStartEvent event) { 764 // Add the drag view 765 mDragView = event.dragView; 766 addView(mDragView); 767 } 768 769 public final void onBusEvent(DragDockStateChangedEvent event) { 770 // Update the task stack positions, and then 771 if (event.dockState != null) { 772 // Draw an overlay on the bounds of the dock task 773 mDockRegionOverlay.setBounds( 774 event.dockState.getDockedBounds(getMeasuredWidth(), getMeasuredHeight())); 775 mDockRegionOverlay.setAlpha(255); 776 } else { 777 mDockRegionOverlay.setAlpha(0); 778 } 779 invalidate(); 780 } 781 782 public final void onBusEvent(final DragEndEvent event) { 783 event.postAnimationTrigger.increment(); 784 event.postAnimationTrigger.addLastDecrementRunnable(new Runnable() { 785 @Override 786 public void run() { 787 // Remove the drag view 788 removeView(mDragView); 789 mDragView = null; 790 mDockRegionOverlay.setAlpha(0); 791 invalidate(); 792 793 // Dock the new task if we are hovering over a valid dock state 794 if (event.dockState != null) { 795 SystemServicesProxy ssp = RecentsTaskLoader.getInstance().getSystemServicesProxy(); 796 ssp.setTaskResizeable(event.task.key.id); 797 ssp.dockTask(event.task.key.id, event.dockState.createMode); 798 launchTask(event.task, null); 799 } 800 } 801 }); 802 if (event.dockState == null) { 803 // Animate the alpha back to what it was before 804 Rect taskBounds = mTaskStackView.getStackAlgorithm().getUntransformedTaskViewBounds(); 805 int left = taskBounds.left + (int) ((1f - event.taskView.getScaleX()) * taskBounds.width()) / 2; 806 int top = taskBounds.top + (int) ((1f - event.taskView.getScaleY()) * taskBounds.height()) / 2; 807 event.dragView.animate() 808 .alpha(1f) 809 .translationX(left + event.taskView.getTranslationX()) 810 .translationY(top + event.taskView.getTranslationY()) 811 .setDuration(175) 812 .setInterpolator(new AccelerateInterpolator(1.5f)) 813 .withEndAction(event.postAnimationTrigger.decrementAsRunnable()) 814 .withLayer() 815 .start(); 816 } else { 817 event.postAnimationTrigger.decrement(); 818 } 819 } 820} 821