RecentsView.java revision e494c382c0caf35f225dfb55f0e3b992c14d79f5
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.TaskStackBuilder; 21import android.content.Context; 22import android.content.Intent; 23import android.graphics.Bitmap; 24import android.graphics.Canvas; 25import android.graphics.Rect; 26import android.net.Uri; 27import android.os.UserHandle; 28import android.provider.Settings; 29import android.util.AttributeSet; 30import android.view.LayoutInflater; 31import android.view.View; 32import android.view.WindowInsets; 33import android.widget.FrameLayout; 34 35import com.android.systemui.recents.Constants; 36import com.android.systemui.recents.RecentsConfiguration; 37import com.android.systemui.recents.misc.SystemServicesProxy; 38import com.android.systemui.recents.model.RecentsPackageMonitor; 39import com.android.systemui.recents.model.RecentsTaskLoader; 40import com.android.systemui.recents.model.Task; 41import com.android.systemui.recents.model.TaskStack; 42 43import java.util.ArrayList; 44 45/** 46 * This view is the the top level layout that contains TaskStacks (which are laid out according 47 * to their SpaceNode bounds. 48 */ 49public class RecentsView extends FrameLayout implements TaskStackView.TaskStackViewCallbacks, 50 RecentsPackageMonitor.PackageCallbacks { 51 52 /** The RecentsView callbacks */ 53 public interface RecentsViewCallbacks { 54 public void onTaskViewClicked(); 55 public void onTaskLaunchFailed(); 56 public void onAllTaskViewsDismissed(); 57 public void onExitToHomeAnimationTriggered(); 58 public void onScreenPinningRequest(); 59 } 60 61 RecentsConfiguration mConfig; 62 LayoutInflater mInflater; 63 DebugOverlayView mDebugOverlay; 64 65 ArrayList<TaskStack> mStacks; 66 View mSearchBar; 67 RecentsViewCallbacks mCb; 68 69 public RecentsView(Context context) { 70 super(context); 71 } 72 73 public RecentsView(Context context, AttributeSet attrs) { 74 this(context, attrs, 0); 75 } 76 77 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr) { 78 this(context, attrs, defStyleAttr, 0); 79 } 80 81 public RecentsView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 82 super(context, attrs, defStyleAttr, defStyleRes); 83 mConfig = RecentsConfiguration.getInstance(); 84 mInflater = LayoutInflater.from(context); 85 } 86 87 /** Sets the callbacks */ 88 public void setCallbacks(RecentsViewCallbacks cb) { 89 mCb = cb; 90 } 91 92 /** Sets the debug overlay */ 93 public void setDebugOverlay(DebugOverlayView overlay) { 94 mDebugOverlay = overlay; 95 } 96 97 /** Set/get the bsp root node */ 98 public void setTaskStacks(ArrayList<TaskStack> stacks) { 99 int numStacks = stacks.size(); 100 101 // Make a list of the stack view children only 102 ArrayList<TaskStackView> stackViews = new ArrayList<TaskStackView>(); 103 int childCount = getChildCount(); 104 for (int i = 0; i < childCount; i++) { 105 View child = getChildAt(i); 106 if (child != mSearchBar) { 107 stackViews.add((TaskStackView) child); 108 } 109 } 110 111 // Remove all/extra stack views 112 int numTaskStacksToKeep = 0; // Keep no tasks if we are recreating the layout 113 if (mConfig.launchedReuseTaskStackViews) { 114 numTaskStacksToKeep = Math.min(childCount, numStacks); 115 } 116 for (int i = stackViews.size() - 1; i >= numTaskStacksToKeep; i--) { 117 removeView(stackViews.get(i)); 118 stackViews.remove(i); 119 } 120 121 // Update the stack views that we are keeping 122 for (int i = 0; i < numTaskStacksToKeep; i++) { 123 TaskStackView tsv = stackViews.get(i); 124 // If onRecentsHidden is not triggered, we need to the stack view again here 125 tsv.reset(); 126 tsv.setStack(stacks.get(i)); 127 } 128 129 // Add remaining/recreate stack views 130 mStacks = stacks; 131 for (int i = stackViews.size(); i < numStacks; i++) { 132 TaskStack stack = stacks.get(i); 133 TaskStackView stackView = new TaskStackView(getContext(), stack); 134 stackView.setCallbacks(this); 135 addView(stackView); 136 } 137 138 // Enable debug mode drawing on all the stacks if necessary 139 if (mConfig.debugModeEnabled) { 140 for (int i = childCount - 1; i >= 0; i--) { 141 View v = getChildAt(i); 142 if (v != mSearchBar) { 143 TaskStackView stackView = (TaskStackView) v; 144 stackView.setDebugOverlay(mDebugOverlay); 145 } 146 } 147 } 148 149 // Trigger a new layout 150 requestLayout(); 151 } 152 153 /** Launches the focused task from the first stack if possible */ 154 public boolean launchFocusedTask() { 155 // Get the first stack view 156 int childCount = getChildCount(); 157 for (int i = 0; i < childCount; i++) { 158 View child = getChildAt(i); 159 if (child != mSearchBar) { 160 TaskStackView stackView = (TaskStackView) child; 161 TaskStack stack = stackView.mStack; 162 // Iterate the stack views and try and find the focused task 163 int taskCount = stackView.getChildCount(); 164 for (int j = 0; j < taskCount; j++) { 165 TaskView tv = (TaskView) stackView.getChildAt(j); 166 Task task = tv.getTask(); 167 if (tv.isFocusedTask()) { 168 onTaskViewClicked(stackView, tv, stack, task, false); 169 return true; 170 } 171 } 172 } 173 } 174 return false; 175 } 176 177 /** Launches the task that Recents was launched from, if possible */ 178 public boolean launchPreviousTask() { 179 // Get the first stack view 180 int childCount = getChildCount(); 181 for (int i = 0; i < childCount; i++) { 182 View child = getChildAt(i); 183 if (child != mSearchBar) { 184 TaskStackView stackView = (TaskStackView) child; 185 TaskStack stack = stackView.mStack; 186 ArrayList<Task> tasks = stack.getTasks(); 187 188 // Find the launch task in the stack 189 if (!tasks.isEmpty()) { 190 int taskCount = tasks.size(); 191 for (int j = 0; j < taskCount; j++) { 192 if (tasks.get(j).isLaunchTarget) { 193 Task task = tasks.get(j); 194 TaskView tv = stackView.getChildViewForTask(task); 195 onTaskViewClicked(stackView, tv, stack, task, false); 196 return true; 197 } 198 } 199 } 200 } 201 } 202 return false; 203 } 204 205 /** Requests all task stacks to start their enter-recents animation */ 206 public void startEnterRecentsAnimation(ViewAnimation.TaskViewEnterContext ctx) { 207 // We have to increment/decrement the post animation trigger in case there are no children 208 // to ensure that it runs 209 ctx.postAnimationTrigger.increment(); 210 211 int childCount = getChildCount(); 212 for (int i = 0; i < childCount; i++) { 213 View child = getChildAt(i); 214 if (child != mSearchBar) { 215 TaskStackView stackView = (TaskStackView) child; 216 stackView.startEnterRecentsAnimation(ctx); 217 } 218 } 219 ctx.postAnimationTrigger.decrement(); 220 } 221 222 /** Requests all task stacks to start their exit-recents animation */ 223 public void startExitToHomeAnimation(ViewAnimation.TaskViewExitContext ctx) { 224 // We have to increment/decrement the post animation trigger in case there are no children 225 // to ensure that it runs 226 ctx.postAnimationTrigger.increment(); 227 int childCount = getChildCount(); 228 for (int i = 0; i < childCount; i++) { 229 View child = getChildAt(i); 230 if (child != mSearchBar) { 231 TaskStackView stackView = (TaskStackView) child; 232 stackView.startExitToHomeAnimation(ctx); 233 } 234 } 235 ctx.postAnimationTrigger.decrement(); 236 237 // Notify of the exit animation 238 mCb.onExitToHomeAnimationTriggered(); 239 } 240 241 /** Adds the search bar */ 242 public void setSearchBar(View searchBar) { 243 // Create the search bar (and hide it if we have no recent tasks) 244 if (Constants.DebugFlags.App.EnableSearchLayout) { 245 // Remove the previous search bar if one exists 246 if (mSearchBar != null && indexOfChild(mSearchBar) > -1) { 247 removeView(mSearchBar); 248 } 249 // Add the new search bar 250 if (searchBar != null) { 251 mSearchBar = searchBar; 252 addView(mSearchBar); 253 } 254 } 255 } 256 257 /** Returns whether there is currently a search bar */ 258 public boolean hasSearchBar() { 259 return mSearchBar != null; 260 } 261 262 /** Sets the visibility of the search bar */ 263 public void setSearchBarVisibility(int visibility) { 264 if (mSearchBar != null) { 265 mSearchBar.setVisibility(visibility); 266 // Always bring the search bar to the top 267 mSearchBar.bringToFront(); 268 } 269 } 270 271 /** 272 * This is called with the full size of the window since we are handling our own insets. 273 */ 274 @Override 275 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 276 int width = MeasureSpec.getSize(widthMeasureSpec); 277 int height = MeasureSpec.getSize(heightMeasureSpec); 278 279 // Get the search bar bounds and measure the search bar layout 280 if (mSearchBar != null) { 281 Rect searchBarSpaceBounds = new Rect(); 282 mConfig.getSearchBarBounds(width, height, mConfig.systemInsets.top, searchBarSpaceBounds); 283 mSearchBar.measure( 284 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.width(), MeasureSpec.EXACTLY), 285 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.height(), MeasureSpec.EXACTLY)); 286 } 287 288 Rect taskStackBounds = new Rect(); 289 mConfig.getTaskStackBounds(width, height, mConfig.systemInsets.top, 290 mConfig.systemInsets.right, taskStackBounds); 291 292 // Measure each TaskStackView with the full width and height of the window since the 293 // transition view is a child of that stack view 294 int childCount = getChildCount(); 295 for (int i = 0; i < childCount; i++) { 296 View child = getChildAt(i); 297 if (child != mSearchBar && child.getVisibility() != GONE) { 298 TaskStackView tsv = (TaskStackView) child; 299 // Set the insets to be the top/left inset + search bounds 300 tsv.setStackInsetRect(taskStackBounds); 301 tsv.measure(widthMeasureSpec, heightMeasureSpec); 302 } 303 } 304 305 setMeasuredDimension(width, height); 306 } 307 308 /** 309 * This is called with the full size of the window since we are handling our own insets. 310 */ 311 @Override 312 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 313 // Get the search bar bounds so that we lay it out 314 if (mSearchBar != null) { 315 Rect searchBarSpaceBounds = new Rect(); 316 mConfig.getSearchBarBounds(getMeasuredWidth(), getMeasuredHeight(), 317 mConfig.systemInsets.top, searchBarSpaceBounds); 318 mSearchBar.layout(searchBarSpaceBounds.left, searchBarSpaceBounds.top, 319 searchBarSpaceBounds.right, searchBarSpaceBounds.bottom); 320 } 321 322 // Layout each TaskStackView with the full width and height of the window since the 323 // transition view is a child of that stack view 324 int childCount = getChildCount(); 325 for (int i = 0; i < childCount; i++) { 326 View child = getChildAt(i); 327 if (child != mSearchBar && child.getVisibility() != GONE) { 328 child.layout(left, top, left + child.getMeasuredWidth(), 329 top + child.getMeasuredHeight()); 330 } 331 } 332 } 333 334 @Override 335 public WindowInsets onApplyWindowInsets(WindowInsets insets) { 336 // Update the configuration with the latest system insets and trigger a relayout 337 mConfig.updateSystemInsets(insets.getSystemWindowInsets()); 338 requestLayout(); 339 return insets.consumeSystemWindowInsets(); 340 } 341 342 /** Notifies each task view of the user interaction. */ 343 public void onUserInteraction() { 344 // Get the first stack view 345 int childCount = getChildCount(); 346 for (int i = 0; i < childCount; i++) { 347 View child = getChildAt(i); 348 if (child != mSearchBar) { 349 TaskStackView stackView = (TaskStackView) child; 350 stackView.onUserInteraction(); 351 } 352 } 353 } 354 355 /** Focuses the next task in the first stack view */ 356 public void focusNextTask(boolean forward) { 357 // Get the first stack view 358 int childCount = getChildCount(); 359 for (int i = 0; i < childCount; i++) { 360 View child = getChildAt(i); 361 if (child != mSearchBar) { 362 TaskStackView stackView = (TaskStackView) child; 363 stackView.focusNextTask(forward, true); 364 break; 365 } 366 } 367 } 368 369 /** Dismisses the focused task. */ 370 public void dismissFocusedTask() { 371 // Get the first stack view 372 int childCount = getChildCount(); 373 for (int i = 0; i < childCount; i++) { 374 View child = getChildAt(i); 375 if (child != mSearchBar) { 376 TaskStackView stackView = (TaskStackView) child; 377 stackView.dismissFocusedTask(); 378 break; 379 } 380 } 381 } 382 383 /** Unfilters any filtered stacks */ 384 public boolean unfilterFilteredStacks() { 385 if (mStacks != null) { 386 // Check if there are any filtered stacks and unfilter them before we back out of Recents 387 boolean stacksUnfiltered = false; 388 int numStacks = mStacks.size(); 389 for (int i = 0; i < numStacks; i++) { 390 TaskStack stack = mStacks.get(i); 391 if (stack.hasFilteredTasks()) { 392 stack.unfilterTasks(); 393 stacksUnfiltered = true; 394 } 395 } 396 return stacksUnfiltered; 397 } 398 return false; 399 } 400 401 /**** TaskStackView.TaskStackCallbacks Implementation ****/ 402 403 @Override 404 public void onTaskViewClicked(final TaskStackView stackView, final TaskView tv, 405 final TaskStack stack, final Task task, final boolean lockToTask) { 406 // Notify any callbacks of the launching of a new task 407 if (mCb != null) { 408 mCb.onTaskViewClicked(); 409 } 410 411 // Upfront the processing of the thumbnail 412 TaskViewTransform transform = new TaskViewTransform(); 413 View sourceView; 414 int offsetX = 0; 415 int offsetY = 0; 416 float stackScroll = stackView.getScroller().getStackScroll(); 417 if (tv == null) { 418 // If there is no actual task view, then use the stack view as the source view 419 // and then offset to the expected transform rect, but bound this to just 420 // outside the display rect (to ensure we don't animate from too far away) 421 sourceView = stackView; 422 transform = stackView.getStackAlgorithm().getStackTransform(task, stackScroll, transform, null); 423 offsetX = transform.rect.left; 424 offsetY = mConfig.displayRect.height(); 425 } else { 426 sourceView = tv.mThumbnailView; 427 transform = stackView.getStackAlgorithm().getStackTransform(task, stackScroll, transform, null); 428 } 429 430 // Compute the thumbnail to scale up from 431 final SystemServicesProxy ssp = 432 RecentsTaskLoader.getInstance().getSystemServicesProxy(); 433 ActivityOptions opts = null; 434 if (task.thumbnail != null && task.thumbnail.getWidth() > 0 && 435 task.thumbnail.getHeight() > 0) { 436 Bitmap b; 437 if (tv != null) { 438 // Disable any focused state before we draw the header 439 if (tv.isFocusedTask()) { 440 tv.unsetFocusedTask(); 441 } 442 443 float scale = tv.getScaleX(); 444 int fromHeaderWidth = (int) (tv.mHeaderView.getMeasuredWidth() * scale); 445 int fromHeaderHeight = (int) (tv.mHeaderView.getMeasuredHeight() * scale); 446 b = Bitmap.createBitmap(fromHeaderWidth, fromHeaderHeight, 447 Bitmap.Config.ARGB_8888); 448 if (Constants.DebugFlags.App.EnableTransitionThumbnailDebugMode) { 449 b.eraseColor(0xFFff0000); 450 } else { 451 Canvas c = new Canvas(b); 452 c.scale(tv.getScaleX(), tv.getScaleY()); 453 tv.mHeaderView.draw(c); 454 c.setBitmap(null); 455 } 456 } else { 457 // Notify the system to skip the thumbnail layer by using an ALPHA_8 bitmap 458 b = Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8); 459 } 460 ActivityOptions.OnAnimationStartedListener animStartedListener = null; 461 if (lockToTask) { 462 animStartedListener = new ActivityOptions.OnAnimationStartedListener() { 463 boolean mTriggered = false; 464 @Override 465 public void onAnimationStarted() { 466 if (!mTriggered) { 467 postDelayed(new Runnable() { 468 @Override 469 public void run() { 470 mCb.onScreenPinningRequest(); 471 } 472 }, 350); 473 mTriggered = true; 474 } 475 } 476 }; 477 } 478 opts = ActivityOptions.makeThumbnailAspectScaleUpAnimation(sourceView, 479 b, offsetX, offsetY, transform.rect.width(), transform.rect.height(), 480 sourceView.getHandler(), animStartedListener); 481 } 482 483 final ActivityOptions launchOpts = opts; 484 final Runnable launchRunnable = new Runnable() { 485 @Override 486 public void run() { 487 if (task.isActive) { 488 // Bring an active task to the foreground 489 ssp.moveTaskToFront(task.key.id, launchOpts); 490 } else { 491 if (ssp.startActivityFromRecents(getContext(), task.key.id, 492 task.activityLabel, launchOpts)) { 493 if (launchOpts == null && lockToTask) { 494 mCb.onScreenPinningRequest(); 495 } 496 } else { 497 // Dismiss the task and return the user to home if we fail to 498 // launch the task 499 onTaskViewDismissed(task); 500 if (mCb != null) { 501 mCb.onTaskLaunchFailed(); 502 } 503 } 504 } 505 } 506 }; 507 508 // Launch the app right away if there is no task view, otherwise, animate the icon out first 509 if (tv == null) { 510 launchRunnable.run(); 511 } else { 512 if (!task.group.isFrontMostTask(task)) { 513 // For affiliated tasks that are behind other tasks, we must animate the front cards 514 // out of view before starting the task transition 515 stackView.startLaunchTaskAnimation(tv, launchRunnable, lockToTask); 516 } else { 517 // Otherwise, we can start the task transition immediately 518 stackView.startLaunchTaskAnimation(tv, null, lockToTask); 519 launchRunnable.run(); 520 } 521 } 522 } 523 524 @Override 525 public void onTaskViewAppInfoClicked(Task t) { 526 // Create a new task stack with the application info details activity 527 Intent baseIntent = t.key.baseIntent; 528 Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS, 529 Uri.fromParts("package", baseIntent.getComponent().getPackageName(), null)); 530 intent.setComponent(intent.resolveActivity(getContext().getPackageManager())); 531 TaskStackBuilder.create(getContext()) 532 .addNextIntentWithParentStack(intent).startActivities(null, 533 new UserHandle(t.key.userId)); 534 } 535 536 @Override 537 public void onTaskViewDismissed(Task t) { 538 // Remove any stored data from the loader. We currently don't bother notifying the views 539 // that the data has been unloaded because at the point we call onTaskViewDismissed(), the views 540 // either don't need to be updated, or have already been removed. 541 RecentsTaskLoader loader = RecentsTaskLoader.getInstance(); 542 loader.deleteTaskData(t, false); 543 544 // Remove the old task from activity manager 545 RecentsTaskLoader.getInstance().getSystemServicesProxy().removeTask(t.key.id); 546 } 547 548 @Override 549 public void onAllTaskViewsDismissed() { 550 mCb.onAllTaskViewsDismissed(); 551 } 552 553 /** Final callback after Recents is finally hidden. */ 554 public void onRecentsHidden() { 555 // Notify each task stack view 556 int childCount = getChildCount(); 557 for (int i = 0; i < childCount; i++) { 558 View child = getChildAt(i); 559 if (child != mSearchBar) { 560 TaskStackView stackView = (TaskStackView) child; 561 stackView.onRecentsHidden(); 562 } 563 } 564 } 565 566 @Override 567 public void onTaskStackFilterTriggered() { 568 // Hide the search bar 569 if (mSearchBar != null) { 570 mSearchBar.animate() 571 .alpha(0f) 572 .setStartDelay(0) 573 .setInterpolator(mConfig.fastOutSlowInInterpolator) 574 .setDuration(mConfig.filteringCurrentViewsAnimDuration) 575 .withLayer() 576 .start(); 577 } 578 } 579 580 @Override 581 public void onTaskStackUnfilterTriggered() { 582 // Show the search bar 583 if (mSearchBar != null) { 584 mSearchBar.animate() 585 .alpha(1f) 586 .setStartDelay(0) 587 .setInterpolator(mConfig.fastOutSlowInInterpolator) 588 .setDuration(mConfig.filteringNewViewsAnimDuration) 589 .withLayer() 590 .start(); 591 } 592 } 593 594 /**** RecentsPackageMonitor.PackageCallbacks Implementation ****/ 595 596 @Override 597 public void onPackagesChanged(RecentsPackageMonitor monitor, String packageName, int userId) { 598 // Propagate this event down to each task stack view 599 int childCount = getChildCount(); 600 for (int i = 0; i < childCount; i++) { 601 View child = getChildAt(i); 602 if (child != mSearchBar) { 603 TaskStackView stackView = (TaskStackView) child; 604 stackView.onPackagesChanged(monitor, packageName, userId); 605 } 606 } 607 } 608} 609