RecentsView.java revision bc571a980704dc767838935e83c6aed231c406e9
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 int childCount = getChildCount(); 208 for (int i = 0; i < childCount; i++) { 209 View child = getChildAt(i); 210 if (child != mSearchBar) { 211 TaskStackView stackView = (TaskStackView) child; 212 stackView.startEnterRecentsAnimation(ctx); 213 } 214 } 215 } 216 217 /** Requests all task stacks to start their exit-recents animation */ 218 public void startExitToHomeAnimation(ViewAnimation.TaskViewExitContext ctx) { 219 // We have to increment/decrement the post animation trigger in case there are no children 220 // to ensure that it runs 221 ctx.postAnimationTrigger.increment(); 222 int childCount = getChildCount(); 223 for (int i = 0; i < childCount; i++) { 224 View child = getChildAt(i); 225 if (child != mSearchBar) { 226 TaskStackView stackView = (TaskStackView) child; 227 stackView.startExitToHomeAnimation(ctx); 228 } 229 } 230 ctx.postAnimationTrigger.decrement(); 231 232 // Notify of the exit animation 233 mCb.onExitToHomeAnimationTriggered(); 234 } 235 236 /** Adds the search bar */ 237 public void setSearchBar(View searchBar) { 238 // Create the search bar (and hide it if we have no recent tasks) 239 if (Constants.DebugFlags.App.EnableSearchLayout) { 240 // Remove the previous search bar if one exists 241 if (mSearchBar != null && indexOfChild(mSearchBar) > -1) { 242 removeView(mSearchBar); 243 } 244 // Add the new search bar 245 if (searchBar != null) { 246 mSearchBar = searchBar; 247 addView(mSearchBar); 248 } 249 } 250 } 251 252 /** Returns whether there is currently a search bar */ 253 public boolean hasSearchBar() { 254 return mSearchBar != null; 255 } 256 257 /** Sets the visibility of the search bar */ 258 public void setSearchBarVisibility(int visibility) { 259 if (mSearchBar != null) { 260 mSearchBar.setVisibility(visibility); 261 // Always bring the search bar to the top 262 mSearchBar.bringToFront(); 263 } 264 } 265 266 /** 267 * This is called with the full size of the window since we are handling our own insets. 268 */ 269 @Override 270 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 271 int width = MeasureSpec.getSize(widthMeasureSpec); 272 int height = MeasureSpec.getSize(heightMeasureSpec); 273 274 // Get the search bar bounds and measure the search bar layout 275 if (mSearchBar != null) { 276 Rect searchBarSpaceBounds = new Rect(); 277 mConfig.getSearchBarBounds(width, height, mConfig.systemInsets.top, searchBarSpaceBounds); 278 mSearchBar.measure( 279 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.width(), MeasureSpec.EXACTLY), 280 MeasureSpec.makeMeasureSpec(searchBarSpaceBounds.height(), MeasureSpec.EXACTLY)); 281 } 282 283 Rect taskStackBounds = new Rect(); 284 mConfig.getTaskStackBounds(width, height, mConfig.systemInsets.top, 285 mConfig.systemInsets.right, taskStackBounds); 286 287 // Measure each TaskStackView with the full width and height of the window since the 288 // transition view is a child of that stack view 289 int childCount = getChildCount(); 290 for (int i = 0; i < childCount; i++) { 291 View child = getChildAt(i); 292 if (child != mSearchBar && child.getVisibility() != GONE) { 293 TaskStackView tsv = (TaskStackView) child; 294 // Set the insets to be the top/left inset + search bounds 295 tsv.setStackInsetRect(taskStackBounds); 296 tsv.measure(widthMeasureSpec, heightMeasureSpec); 297 } 298 } 299 300 setMeasuredDimension(width, height); 301 } 302 303 /** 304 * This is called with the full size of the window since we are handling our own insets. 305 */ 306 @Override 307 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 308 // Get the search bar bounds so that we lay it out 309 if (mSearchBar != null) { 310 Rect searchBarSpaceBounds = new Rect(); 311 mConfig.getSearchBarBounds(getMeasuredWidth(), getMeasuredHeight(), 312 mConfig.systemInsets.top, searchBarSpaceBounds); 313 mSearchBar.layout(searchBarSpaceBounds.left, searchBarSpaceBounds.top, 314 searchBarSpaceBounds.right, searchBarSpaceBounds.bottom); 315 } 316 317 // Layout each TaskStackView with the full width and height of the window since the 318 // transition view is a child of that stack view 319 int childCount = getChildCount(); 320 for (int i = 0; i < childCount; i++) { 321 View child = getChildAt(i); 322 if (child != mSearchBar && child.getVisibility() != GONE) { 323 child.layout(left, top, left + child.getMeasuredWidth(), 324 top + child.getMeasuredHeight()); 325 } 326 } 327 } 328 329 @Override 330 public WindowInsets onApplyWindowInsets(WindowInsets insets) { 331 // Update the configuration with the latest system insets and trigger a relayout 332 mConfig.updateSystemInsets(insets.getSystemWindowInsets()); 333 requestLayout(); 334 return insets.consumeSystemWindowInsets(); 335 } 336 337 /** Notifies each task view of the user interaction. */ 338 public void onUserInteraction() { 339 // Get the first stack view 340 int childCount = getChildCount(); 341 for (int i = 0; i < childCount; i++) { 342 View child = getChildAt(i); 343 if (child != mSearchBar) { 344 TaskStackView stackView = (TaskStackView) child; 345 stackView.onUserInteraction(); 346 } 347 } 348 } 349 350 /** Focuses the next task in the first stack view */ 351 public void focusNextTask(boolean forward) { 352 // Get the first stack view 353 int childCount = getChildCount(); 354 for (int i = 0; i < childCount; i++) { 355 View child = getChildAt(i); 356 if (child != mSearchBar) { 357 TaskStackView stackView = (TaskStackView) child; 358 stackView.focusNextTask(forward, true); 359 break; 360 } 361 } 362 } 363 364 /** Dismisses the focused task. */ 365 public void dismissFocusedTask() { 366 // Get the first stack view 367 int childCount = getChildCount(); 368 for (int i = 0; i < childCount; i++) { 369 View child = getChildAt(i); 370 if (child != mSearchBar) { 371 TaskStackView stackView = (TaskStackView) child; 372 stackView.dismissFocusedTask(); 373 break; 374 } 375 } 376 } 377 378 /** Unfilters any filtered stacks */ 379 public boolean unfilterFilteredStacks() { 380 if (mStacks != null) { 381 // Check if there are any filtered stacks and unfilter them before we back out of Recents 382 boolean stacksUnfiltered = false; 383 int numStacks = mStacks.size(); 384 for (int i = 0; i < numStacks; i++) { 385 TaskStack stack = mStacks.get(i); 386 if (stack.hasFilteredTasks()) { 387 stack.unfilterTasks(); 388 stacksUnfiltered = true; 389 } 390 } 391 return stacksUnfiltered; 392 } 393 return false; 394 } 395 396 /**** TaskStackView.TaskStackCallbacks Implementation ****/ 397 398 @Override 399 public void onTaskViewClicked(final TaskStackView stackView, final TaskView tv, 400 final TaskStack stack, final Task task, final boolean lockToTask) { 401 // Notify any callbacks of the launching of a new task 402 if (mCb != null) { 403 mCb.onTaskViewClicked(); 404 } 405 406 // Upfront the processing of the thumbnail 407 TaskViewTransform transform = new TaskViewTransform(); 408 View sourceView; 409 int offsetX = 0; 410 int offsetY = 0; 411 float stackScroll = stackView.getScroller().getStackScroll(); 412 if (tv == null) { 413 // If there is no actual task view, then use the stack view as the source view 414 // and then offset to the expected transform rect, but bound this to just 415 // outside the display rect (to ensure we don't animate from too far away) 416 sourceView = stackView; 417 transform = stackView.getStackAlgorithm().getStackTransform(task, stackScroll, transform, null); 418 offsetX = transform.rect.left; 419 offsetY = mConfig.displayRect.height(); 420 } else { 421 sourceView = tv.mThumbnailView; 422 transform = stackView.getStackAlgorithm().getStackTransform(task, stackScroll, transform, null); 423 } 424 425 // Compute the thumbnail to scale up from 426 final SystemServicesProxy ssp = 427 RecentsTaskLoader.getInstance().getSystemServicesProxy(); 428 ActivityOptions opts = null; 429 if (task.thumbnail != null && task.thumbnail.getWidth() > 0 && 430 task.thumbnail.getHeight() > 0) { 431 Bitmap b; 432 if (tv != null) { 433 // Disable any focused state before we draw the header 434 if (tv.isFocusedTask()) { 435 tv.unsetFocusedTask(); 436 } 437 438 float scale = tv.getScaleX(); 439 int fromHeaderWidth = (int) (tv.mHeaderView.getMeasuredWidth() * scale); 440 int fromHeaderHeight = (int) (tv.mHeaderView.getMeasuredHeight() * scale); 441 b = Bitmap.createBitmap(fromHeaderWidth, fromHeaderHeight, 442 Bitmap.Config.ARGB_8888); 443 if (Constants.DebugFlags.App.EnableTransitionThumbnailDebugMode) { 444 b.eraseColor(0xFFff0000); 445 } else { 446 Canvas c = new Canvas(b); 447 c.scale(tv.getScaleX(), tv.getScaleY()); 448 tv.mHeaderView.draw(c); 449 c.setBitmap(null); 450 } 451 } else { 452 // Notify the system to skip the thumbnail layer by using an ALPHA_8 bitmap 453 b = Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8); 454 } 455 ActivityOptions.OnAnimationStartedListener animStartedListener = null; 456 if (lockToTask) { 457 animStartedListener = new ActivityOptions.OnAnimationStartedListener() { 458 boolean mTriggered = false; 459 @Override 460 public void onAnimationStarted() { 461 if (!mTriggered) { 462 postDelayed(new Runnable() { 463 @Override 464 public void run() { 465 mCb.onScreenPinningRequest(); 466 } 467 }, 350); 468 mTriggered = true; 469 } 470 } 471 }; 472 } 473 opts = ActivityOptions.makeThumbnailAspectScaleUpAnimation(sourceView, 474 b, offsetX, offsetY, transform.rect.width(), transform.rect.height(), 475 animStartedListener); 476 } 477 478 final ActivityOptions launchOpts = opts; 479 final Runnable launchRunnable = new Runnable() { 480 @Override 481 public void run() { 482 if (task.isActive) { 483 // Bring an active task to the foreground 484 ssp.moveTaskToFront(task.key.id, launchOpts); 485 } else { 486 if (ssp.startActivityFromRecents(getContext(), task.key.id, 487 task.activityLabel, launchOpts)) { 488 if (launchOpts == null && lockToTask) { 489 mCb.onScreenPinningRequest(); 490 } 491 } else { 492 // Dismiss the task and return the user to home if we fail to 493 // launch the task 494 onTaskViewDismissed(task); 495 if (mCb != null) { 496 mCb.onTaskLaunchFailed(); 497 } 498 } 499 } 500 } 501 }; 502 503 // Launch the app right away if there is no task view, otherwise, animate the icon out first 504 if (tv == null) { 505 launchRunnable.run(); 506 } else { 507 if (!task.group.isFrontMostTask(task)) { 508 // For affiliated tasks that are behind other tasks, we must animate the front cards 509 // out of view before starting the task transition 510 stackView.startLaunchTaskAnimation(tv, launchRunnable, lockToTask); 511 } else { 512 // Otherwise, we can start the task transition immediately 513 stackView.startLaunchTaskAnimation(tv, null, lockToTask); 514 launchRunnable.run(); 515 } 516 } 517 } 518 519 @Override 520 public void onTaskViewAppInfoClicked(Task t) { 521 // Create a new task stack with the application info details activity 522 Intent baseIntent = t.key.baseIntent; 523 Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS, 524 Uri.fromParts("package", baseIntent.getComponent().getPackageName(), null)); 525 intent.setComponent(intent.resolveActivity(getContext().getPackageManager())); 526 TaskStackBuilder.create(getContext()) 527 .addNextIntentWithParentStack(intent).startActivities(null, 528 new UserHandle(t.key.userId)); 529 } 530 531 @Override 532 public void onTaskViewDismissed(Task t) { 533 // Remove any stored data from the loader. We currently don't bother notifying the views 534 // that the data has been unloaded because at the point we call onTaskViewDismissed(), the views 535 // either don't need to be updated, or have already been removed. 536 RecentsTaskLoader loader = RecentsTaskLoader.getInstance(); 537 loader.deleteTaskData(t, false); 538 539 // Remove the old task from activity manager 540 RecentsTaskLoader.getInstance().getSystemServicesProxy().removeTask(t.key.id); 541 } 542 543 @Override 544 public void onAllTaskViewsDismissed() { 545 mCb.onAllTaskViewsDismissed(); 546 } 547 548 /** Final callback after Recents is finally hidden. */ 549 public void onRecentsHidden() { 550 // Notify each task stack view 551 int childCount = getChildCount(); 552 for (int i = 0; i < childCount; i++) { 553 View child = getChildAt(i); 554 if (child != mSearchBar) { 555 TaskStackView stackView = (TaskStackView) child; 556 stackView.onRecentsHidden(); 557 } 558 } 559 } 560 561 @Override 562 public void onTaskStackFilterTriggered() { 563 // Hide the search bar 564 if (mSearchBar != null) { 565 mSearchBar.animate() 566 .alpha(0f) 567 .setStartDelay(0) 568 .setInterpolator(mConfig.fastOutSlowInInterpolator) 569 .setDuration(mConfig.filteringCurrentViewsAnimDuration) 570 .withLayer() 571 .start(); 572 } 573 } 574 575 @Override 576 public void onTaskStackUnfilterTriggered() { 577 // Show the search bar 578 if (mSearchBar != null) { 579 mSearchBar.animate() 580 .alpha(1f) 581 .setStartDelay(0) 582 .setInterpolator(mConfig.fastOutSlowInInterpolator) 583 .setDuration(mConfig.filteringNewViewsAnimDuration) 584 .withLayer() 585 .start(); 586 } 587 } 588 589 /**** RecentsPackageMonitor.PackageCallbacks Implementation ****/ 590 591 @Override 592 public void onPackagesChanged(RecentsPackageMonitor monitor, String packageName, int userId) { 593 // Propagate this event down to each task stack view 594 int childCount = getChildCount(); 595 for (int i = 0; i < childCount; i++) { 596 View child = getChildAt(i); 597 if (child != mSearchBar) { 598 TaskStackView stackView = (TaskStackView) child; 599 stackView.onPackagesChanged(monitor, packageName, userId); 600 } 601 } 602 } 603} 604