1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 11 * KIND, either express or implied. See the License for the specific language governing 12 * permissions and limitations under the License. 13 */ 14 15 package com.android.systemui; 16 17 import static android.view.Display.DEFAULT_DISPLAY; 18 import static android.view.DisplayCutout.BOUNDS_POSITION_BOTTOM; 19 import static android.view.DisplayCutout.BOUNDS_POSITION_LEFT; 20 import static android.view.DisplayCutout.BOUNDS_POSITION_LENGTH; 21 import static android.view.DisplayCutout.BOUNDS_POSITION_RIGHT; 22 import static android.view.DisplayCutout.BOUNDS_POSITION_TOP; 23 import static android.view.Surface.ROTATION_0; 24 import static android.view.Surface.ROTATION_180; 25 import static android.view.Surface.ROTATION_270; 26 import static android.view.Surface.ROTATION_90; 27 import static android.view.ViewGroup.LayoutParams.MATCH_PARENT; 28 import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT; 29 import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS; 30 31 import android.animation.Animator; 32 import android.animation.AnimatorListenerAdapter; 33 import android.animation.ValueAnimator; 34 import android.annotation.Dimension; 35 import android.annotation.NonNull; 36 import android.annotation.Nullable; 37 import android.app.ActivityManager; 38 import android.content.BroadcastReceiver; 39 import android.content.Context; 40 import android.content.Intent; 41 import android.content.IntentFilter; 42 import android.content.res.ColorStateList; 43 import android.content.res.Configuration; 44 import android.content.res.Resources; 45 import android.graphics.Canvas; 46 import android.graphics.Color; 47 import android.graphics.Matrix; 48 import android.graphics.Paint; 49 import android.graphics.Path; 50 import android.graphics.PixelFormat; 51 import android.graphics.Point; 52 import android.graphics.Rect; 53 import android.graphics.RectF; 54 import android.graphics.Region; 55 import android.graphics.drawable.Drawable; 56 import android.hardware.display.DisplayManager; 57 import android.os.Handler; 58 import android.os.HandlerExecutor; 59 import android.os.HandlerThread; 60 import android.os.SystemProperties; 61 import android.os.UserHandle; 62 import android.provider.Settings.Secure; 63 import android.util.DisplayMetrics; 64 import android.util.Log; 65 import android.view.Display; 66 import android.view.DisplayCutout; 67 import android.view.DisplayCutout.BoundsPosition; 68 import android.view.DisplayInfo; 69 import android.view.Gravity; 70 import android.view.LayoutInflater; 71 import android.view.Surface; 72 import android.view.View; 73 import android.view.View.OnLayoutChangeListener; 74 import android.view.ViewGroup; 75 import android.view.ViewGroup.LayoutParams; 76 import android.view.ViewTreeObserver; 77 import android.view.WindowManager; 78 import android.widget.FrameLayout; 79 import android.widget.ImageView; 80 81 import androidx.annotation.VisibleForTesting; 82 83 import com.android.internal.util.Preconditions; 84 import com.android.systemui.RegionInterceptingFrameLayout.RegionInterceptableView; 85 import com.android.systemui.broadcast.BroadcastDispatcher; 86 import com.android.systemui.dagger.qualifiers.Main; 87 import com.android.systemui.qs.SecureSetting; 88 import com.android.systemui.tuner.TunerService; 89 import com.android.systemui.tuner.TunerService.Tunable; 90 91 import java.util.ArrayList; 92 import java.util.List; 93 94 import javax.inject.Inject; 95 import javax.inject.Singleton; 96 97 /** 98 * An overlay that draws screen decorations in software (e.g for rounded corners or display cutout) 99 * for antialiasing and emulation purposes. 100 */ 101 @Singleton 102 public class ScreenDecorations extends SystemUI implements Tunable { 103 private static final boolean DEBUG = false; 104 private static final String TAG = "ScreenDecorations"; 105 106 public static final String SIZE = "sysui_rounded_size"; 107 public static final String PADDING = "sysui_rounded_content_padding"; 108 private static final boolean DEBUG_SCREENSHOT_ROUNDED_CORNERS = 109 SystemProperties.getBoolean("debug.screenshot_rounded_corners", false); 110 private static final boolean VERBOSE = false; 111 private static final boolean DEBUG_COLOR = DEBUG_SCREENSHOT_ROUNDED_CORNERS; 112 113 private DisplayManager mDisplayManager; 114 @VisibleForTesting 115 protected boolean mIsRegistered; 116 private final BroadcastDispatcher mBroadcastDispatcher; 117 private final Handler mMainHandler; 118 private final TunerService mTunerService; 119 private DisplayManager.DisplayListener mDisplayListener; 120 private CameraAvailabilityListener mCameraListener; 121 122 //TODO: These are piecemeal being updated to Points for now to support non-square rounded 123 // corners. for now it is only supposed when reading the intrinsic size from the drawables with 124 // mIsRoundedCornerMultipleRadius is set 125 @VisibleForTesting 126 protected Point mRoundedDefault = new Point(0, 0); 127 @VisibleForTesting 128 protected Point mRoundedDefaultTop = new Point(0, 0); 129 @VisibleForTesting 130 protected Point mRoundedDefaultBottom = new Point(0, 0); 131 @VisibleForTesting 132 protected View[] mOverlays; 133 @Nullable 134 private DisplayCutoutView[] mCutoutViews; 135 private float mDensity; 136 private WindowManager mWindowManager; 137 private int mRotation; 138 private SecureSetting mColorInversionSetting; 139 private Handler mHandler; 140 private boolean mPendingRotationChange; 141 private boolean mIsRoundedCornerMultipleRadius; 142 143 private CameraAvailabilityListener.CameraTransitionCallback mCameraTransitionCallback = 144 new CameraAvailabilityListener.CameraTransitionCallback() { 145 @Override 146 public void onApplyCameraProtection(@NonNull Path protectionPath, @NonNull Rect bounds) { 147 if (mCutoutViews == null) { 148 Log.w(TAG, "DisplayCutoutView do not initialized"); 149 return; 150 } 151 // Show the extra protection around the front facing camera if necessary 152 for (DisplayCutoutView dcv : mCutoutViews) { 153 // Check Null since not all mCutoutViews[pos] be inflated at the meanwhile 154 if (dcv != null) { 155 dcv.setProtection(protectionPath, bounds); 156 dcv.setShowProtection(true); 157 } 158 } 159 } 160 161 @Override 162 public void onHideCameraProtection() { 163 if (mCutoutViews == null) { 164 Log.w(TAG, "DisplayCutoutView do not initialized"); 165 return; 166 } 167 // Go back to the regular anti-aliasing 168 for (DisplayCutoutView dcv : mCutoutViews) { 169 // Check Null since not all mCutoutViews[pos] be inflated at the meanwhile 170 if (dcv != null) { 171 dcv.setShowProtection(false); 172 } 173 } 174 } 175 }; 176 177 /** 178 * Converts a set of {@link Rect}s into a {@link Region} 179 * 180 * @hide 181 */ rectsToRegion(List<Rect> rects)182 public static Region rectsToRegion(List<Rect> rects) { 183 Region result = Region.obtain(); 184 if (rects != null) { 185 for (Rect r : rects) { 186 if (r != null && !r.isEmpty()) { 187 result.op(r, Region.Op.UNION); 188 } 189 } 190 } 191 return result; 192 } 193 194 @Inject ScreenDecorations(Context context, @Main Handler handler, BroadcastDispatcher broadcastDispatcher, TunerService tunerService)195 public ScreenDecorations(Context context, 196 @Main Handler handler, 197 BroadcastDispatcher broadcastDispatcher, 198 TunerService tunerService) { 199 super(context); 200 mMainHandler = handler; 201 mBroadcastDispatcher = broadcastDispatcher; 202 mTunerService = tunerService; 203 } 204 205 @Override start()206 public void start() { 207 mHandler = startHandlerThread(); 208 mHandler.post(this::startOnScreenDecorationsThread); 209 } 210 211 @VisibleForTesting startHandlerThread()212 Handler startHandlerThread() { 213 HandlerThread thread = new HandlerThread("ScreenDecorations"); 214 thread.start(); 215 return thread.getThreadHandler(); 216 } 217 startOnScreenDecorationsThread()218 private void startOnScreenDecorationsThread() { 219 mRotation = mContext.getDisplay().getRotation(); 220 mWindowManager = mContext.getSystemService(WindowManager.class); 221 mDisplayManager = mContext.getSystemService(DisplayManager.class); 222 mIsRoundedCornerMultipleRadius = mContext.getResources().getBoolean( 223 R.bool.config_roundedCornerMultipleRadius); 224 updateRoundedCornerRadii(); 225 setupDecorations(); 226 setupCameraListener(); 227 228 mDisplayListener = new DisplayManager.DisplayListener() { 229 @Override 230 public void onDisplayAdded(int displayId) { 231 // do nothing 232 } 233 234 @Override 235 public void onDisplayRemoved(int displayId) { 236 // do nothing 237 } 238 239 @Override 240 public void onDisplayChanged(int displayId) { 241 final int newRotation = mContext.getDisplay().getRotation(); 242 if (mOverlays != null && mRotation != newRotation) { 243 // We cannot immediately update the orientation. Otherwise 244 // WindowManager is still deferring layout until it has finished dispatching 245 // the config changes, which may cause divergence between what we draw 246 // (new orientation), and where we are placed on the screen (old orientation). 247 // Instead we wait until either: 248 // - we are trying to redraw. This because WM resized our window and told us to. 249 // - the config change has been dispatched, so WM is no longer deferring layout. 250 mPendingRotationChange = true; 251 if (DEBUG) { 252 Log.i(TAG, "Rotation changed, deferring " + newRotation + ", staying at " 253 + mRotation); 254 } 255 256 for (int i = 0; i < BOUNDS_POSITION_LENGTH; i++) { 257 if (mOverlays[i] != null) { 258 mOverlays[i].getViewTreeObserver().addOnPreDrawListener( 259 new RestartingPreDrawListener(mOverlays[i], i, newRotation)); 260 } 261 } 262 } 263 updateOrientation(); 264 } 265 }; 266 267 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 268 updateOrientation(); 269 } 270 setupDecorations()271 private void setupDecorations() { 272 if (hasRoundedCorners() || shouldDrawCutout()) { 273 final DisplayCutout cutout = getCutout(); 274 final Rect[] bounds = cutout == null ? null : cutout.getBoundingRectsAll(); 275 int rotatedPos; 276 for (int i = 0; i < BOUNDS_POSITION_LENGTH; i++) { 277 rotatedPos = getBoundPositionFromRotation(i, mRotation); 278 if ((bounds != null && !bounds[rotatedPos].isEmpty()) 279 || shouldShowRoundedCorner(i)) { 280 createOverlay(i); 281 } else { 282 removeOverlay(i); 283 } 284 } 285 } else { 286 removeAllOverlays(); 287 } 288 289 if (hasOverlays()) { 290 if (mIsRegistered) { 291 return; 292 } 293 DisplayMetrics metrics = new DisplayMetrics(); 294 mDisplayManager.getDisplay(DEFAULT_DISPLAY).getMetrics(metrics); 295 mDensity = metrics.density; 296 297 mMainHandler.post(() -> mTunerService.addTunable(this, SIZE)); 298 299 // Watch color inversion and invert the overlay as needed. 300 if (mColorInversionSetting == null) { 301 mColorInversionSetting = new SecureSetting(mContext, mHandler, 302 Secure.ACCESSIBILITY_DISPLAY_INVERSION_ENABLED) { 303 @Override 304 protected void handleValueChanged(int value, boolean observedChange) { 305 updateColorInversion(value); 306 } 307 }; 308 309 mColorInversionSetting.setListening(true); 310 mColorInversionSetting.onChange(false); 311 } 312 313 IntentFilter filter = new IntentFilter(); 314 filter.addAction(Intent.ACTION_USER_SWITCHED); 315 mBroadcastDispatcher.registerReceiver(mUserSwitchIntentReceiver, filter, 316 new HandlerExecutor(mHandler), UserHandle.ALL); 317 mIsRegistered = true; 318 } else { 319 mMainHandler.post(() -> mTunerService.removeTunable(this)); 320 321 if (mColorInversionSetting != null) { 322 mColorInversionSetting.setListening(false); 323 } 324 325 mBroadcastDispatcher.unregisterReceiver(mUserSwitchIntentReceiver); 326 mIsRegistered = false; 327 } 328 } 329 330 @VisibleForTesting getCutout()331 DisplayCutout getCutout() { 332 return mContext.getDisplay().getCutout(); 333 } 334 335 @VisibleForTesting hasOverlays()336 boolean hasOverlays() { 337 if (mOverlays == null) { 338 return false; 339 } 340 341 for (int i = 0; i < BOUNDS_POSITION_LENGTH; i++) { 342 if (mOverlays[i] != null) { 343 return true; 344 } 345 } 346 mOverlays = null; 347 return false; 348 } 349 removeAllOverlays()350 private void removeAllOverlays() { 351 if (mOverlays == null) { 352 return; 353 } 354 355 for (int i = 0; i < BOUNDS_POSITION_LENGTH; i++) { 356 if (mOverlays[i] != null) { 357 removeOverlay(i); 358 } 359 } 360 mOverlays = null; 361 } 362 removeOverlay(@oundsPosition int pos)363 private void removeOverlay(@BoundsPosition int pos) { 364 if (mOverlays == null || mOverlays[pos] == null) { 365 return; 366 } 367 mWindowManager.removeViewImmediate(mOverlays[pos]); 368 mOverlays[pos] = null; 369 } 370 createOverlay(@oundsPosition int pos)371 private void createOverlay(@BoundsPosition int pos) { 372 if (mOverlays == null) { 373 mOverlays = new View[BOUNDS_POSITION_LENGTH]; 374 } 375 376 if (mCutoutViews == null) { 377 mCutoutViews = new DisplayCutoutView[BOUNDS_POSITION_LENGTH]; 378 } 379 380 if (mOverlays[pos] != null) { 381 return; 382 } 383 mOverlays[pos] = overlayForPosition(pos); 384 385 mCutoutViews[pos] = new DisplayCutoutView(mContext, pos, this); 386 ((ViewGroup) mOverlays[pos]).addView(mCutoutViews[pos]); 387 388 mOverlays[pos].setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE); 389 mOverlays[pos].setAlpha(0); 390 mOverlays[pos].setForceDarkAllowed(false); 391 392 updateView(pos); 393 394 mWindowManager.addView(mOverlays[pos], getWindowLayoutParams(pos)); 395 396 mOverlays[pos].addOnLayoutChangeListener(new OnLayoutChangeListener() { 397 @Override 398 public void onLayoutChange(View v, int left, int top, int right, int bottom, 399 int oldLeft, int oldTop, int oldRight, int oldBottom) { 400 mOverlays[pos].removeOnLayoutChangeListener(this); 401 mOverlays[pos].animate() 402 .alpha(1) 403 .setDuration(1000) 404 .start(); 405 } 406 }); 407 408 mOverlays[pos].getViewTreeObserver().addOnPreDrawListener( 409 new ValidatingPreDrawListener(mOverlays[pos])); 410 } 411 412 /** 413 * Allow overrides for top/bottom positions 414 */ overlayForPosition(@oundsPosition int pos)415 private View overlayForPosition(@BoundsPosition int pos) { 416 switch (pos) { 417 case BOUNDS_POSITION_TOP: 418 return LayoutInflater.from(mContext) 419 .inflate(R.layout.rounded_corners_top, null); 420 case BOUNDS_POSITION_BOTTOM: 421 return LayoutInflater.from(mContext) 422 .inflate(R.layout.rounded_corners_bottom, null); 423 default: 424 return LayoutInflater.from(mContext) 425 .inflate(R.layout.rounded_corners, null); 426 } 427 } 428 updateView(@oundsPosition int pos)429 private void updateView(@BoundsPosition int pos) { 430 if (mOverlays == null || mOverlays[pos] == null) { 431 return; 432 } 433 434 // update rounded corner view rotation 435 updateRoundedCornerView(pos, R.id.left); 436 updateRoundedCornerView(pos, R.id.right); 437 updateRoundedCornerSize(mRoundedDefault, mRoundedDefaultTop, mRoundedDefaultBottom); 438 439 // update cutout view rotation 440 if (mCutoutViews != null && mCutoutViews[pos] != null) { 441 mCutoutViews[pos].setRotation(mRotation); 442 } 443 } 444 445 @VisibleForTesting getWindowLayoutParams(@oundsPosition int pos)446 WindowManager.LayoutParams getWindowLayoutParams(@BoundsPosition int pos) { 447 final WindowManager.LayoutParams lp = new WindowManager.LayoutParams( 448 getWidthLayoutParamByPos(pos), 449 getHeightLayoutParamByPos(pos), 450 WindowManager.LayoutParams.TYPE_NAVIGATION_BAR_PANEL, 451 WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE 452 | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL 453 | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH 454 | WindowManager.LayoutParams.FLAG_SLIPPERY 455 | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN, 456 PixelFormat.TRANSLUCENT); 457 lp.privateFlags |= WindowManager.LayoutParams.SYSTEM_FLAG_SHOW_FOR_ALL_USERS 458 | WindowManager.LayoutParams.PRIVATE_FLAG_NO_MOVE_ANIMATION; 459 460 if (!DEBUG_SCREENSHOT_ROUNDED_CORNERS) { 461 lp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_IS_ROUNDED_CORNERS_OVERLAY; 462 } 463 464 lp.setTitle(getWindowTitleByPos(pos)); 465 lp.gravity = getOverlayWindowGravity(pos); 466 lp.layoutInDisplayCutoutMode = LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS; 467 lp.setFitInsetsTypes(0 /* types */); 468 lp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COLOR_SPACE_AGNOSTIC; 469 return lp; 470 } 471 getWidthLayoutParamByPos(@oundsPosition int pos)472 private int getWidthLayoutParamByPos(@BoundsPosition int pos) { 473 final int rotatedPos = getBoundPositionFromRotation(pos, mRotation); 474 return rotatedPos == BOUNDS_POSITION_TOP || rotatedPos == BOUNDS_POSITION_BOTTOM 475 ? MATCH_PARENT : WRAP_CONTENT; 476 } 477 getHeightLayoutParamByPos(@oundsPosition int pos)478 private int getHeightLayoutParamByPos(@BoundsPosition int pos) { 479 final int rotatedPos = getBoundPositionFromRotation(pos, mRotation); 480 return rotatedPos == BOUNDS_POSITION_TOP || rotatedPos == BOUNDS_POSITION_BOTTOM 481 ? WRAP_CONTENT : MATCH_PARENT; 482 } 483 getWindowTitleByPos(@oundsPosition int pos)484 private static String getWindowTitleByPos(@BoundsPosition int pos) { 485 switch (pos) { 486 case BOUNDS_POSITION_LEFT: 487 return "ScreenDecorOverlayLeft"; 488 case BOUNDS_POSITION_TOP: 489 return "ScreenDecorOverlay"; 490 case BOUNDS_POSITION_RIGHT: 491 return "ScreenDecorOverlayRight"; 492 case BOUNDS_POSITION_BOTTOM: 493 return "ScreenDecorOverlayBottom"; 494 default: 495 throw new IllegalArgumentException("unknown bound position: " + pos); 496 } 497 } 498 getOverlayWindowGravity(@oundsPosition int pos)499 private int getOverlayWindowGravity(@BoundsPosition int pos) { 500 final int rotated = getBoundPositionFromRotation(pos, mRotation); 501 switch (rotated) { 502 case BOUNDS_POSITION_TOP: 503 return Gravity.TOP; 504 case BOUNDS_POSITION_BOTTOM: 505 return Gravity.BOTTOM; 506 case BOUNDS_POSITION_LEFT: 507 return Gravity.LEFT; 508 case BOUNDS_POSITION_RIGHT: 509 return Gravity.RIGHT; 510 default: 511 throw new IllegalArgumentException("unknown bound position: " + pos); 512 } 513 } 514 getBoundPositionFromRotation(@oundsPosition int pos, int rotation)515 private static int getBoundPositionFromRotation(@BoundsPosition int pos, int rotation) { 516 return (pos - rotation) < 0 517 ? pos - rotation + DisplayCutout.BOUNDS_POSITION_LENGTH 518 : pos - rotation; 519 } 520 setupCameraListener()521 private void setupCameraListener() { 522 Resources res = mContext.getResources(); 523 boolean enabled = res.getBoolean(R.bool.config_enableDisplayCutoutProtection); 524 if (enabled) { 525 mCameraListener = CameraAvailabilityListener.Factory.build(mContext, mHandler::post); 526 mCameraListener.addTransitionCallback(mCameraTransitionCallback); 527 mCameraListener.startListening(); 528 } 529 } 530 531 private final BroadcastReceiver mUserSwitchIntentReceiver = new BroadcastReceiver() { 532 @Override 533 public void onReceive(Context context, Intent intent) { 534 int newUserId = ActivityManager.getCurrentUser(); 535 if (DEBUG) { 536 Log.d(TAG, "UserSwitched newUserId=" + newUserId); 537 } 538 // update color inversion setting to the new user 539 mColorInversionSetting.setUserId(newUserId); 540 updateColorInversion(mColorInversionSetting.getValue()); 541 } 542 }; 543 updateColorInversion(int colorsInvertedValue)544 private void updateColorInversion(int colorsInvertedValue) { 545 int tint = colorsInvertedValue != 0 ? Color.WHITE : Color.BLACK; 546 if (DEBUG_COLOR) { 547 tint = Color.RED; 548 } 549 ColorStateList tintList = ColorStateList.valueOf(tint); 550 551 if (mOverlays == null) { 552 return; 553 } 554 for (int i = 0; i < BOUNDS_POSITION_LENGTH; i++) { 555 if (mOverlays[i] == null) { 556 continue; 557 } 558 final int size = ((ViewGroup) mOverlays[i]).getChildCount(); 559 View child; 560 for (int j = 0; j < size; j++) { 561 child = ((ViewGroup) mOverlays[i]).getChildAt(j); 562 if (child instanceof ImageView) { 563 ((ImageView) child).setImageTintList(tintList); 564 } else if (child instanceof DisplayCutoutView) { 565 ((DisplayCutoutView) child).setColor(tint); 566 } 567 } 568 } 569 } 570 571 @Override onConfigurationChanged(Configuration newConfig)572 protected void onConfigurationChanged(Configuration newConfig) { 573 mHandler.post(() -> { 574 int oldRotation = mRotation; 575 mPendingRotationChange = false; 576 updateOrientation(); 577 updateRoundedCornerRadii(); 578 if (DEBUG) Log.i(TAG, "onConfigChanged from rot " + oldRotation + " to " + mRotation); 579 setupDecorations(); 580 if (mOverlays != null) { 581 // Updating the layout params ensures that ViewRootImpl will call relayoutWindow(), 582 // which ensures that the forced seamless rotation will end, even if we updated 583 // the rotation before window manager was ready (and was still waiting for sending 584 // the updated rotation). 585 updateLayoutParams(); 586 } 587 }); 588 } 589 updateOrientation()590 private void updateOrientation() { 591 Preconditions.checkState(mHandler.getLooper().getThread() == Thread.currentThread(), 592 "must call on " + mHandler.getLooper().getThread() 593 + ", but was " + Thread.currentThread()); 594 if (mPendingRotationChange) { 595 return; 596 } 597 int newRotation = mContext.getDisplay().getRotation(); 598 if (newRotation != mRotation) { 599 mRotation = newRotation; 600 601 if (mOverlays != null) { 602 updateLayoutParams(); 603 for (int i = 0; i < BOUNDS_POSITION_LENGTH; i++) { 604 if (mOverlays[i] == null) { 605 continue; 606 } 607 updateView(i); 608 } 609 } 610 } 611 } 612 updateRoundedCornerRadii()613 private void updateRoundedCornerRadii() { 614 // We should eventually move to just using the intrinsic size of the drawables since 615 // they should be sized to the exact pixels they want to cover. Therefore I'm purposely not 616 // upgrading all of the configs to contain (width, height) pairs. Instead assume that a 617 // device configured using the single integer config value is okay with drawing the corners 618 // as a square 619 final int newRoundedDefault = mContext.getResources().getDimensionPixelSize( 620 com.android.internal.R.dimen.rounded_corner_radius); 621 final int newRoundedDefaultTop = mContext.getResources().getDimensionPixelSize( 622 com.android.internal.R.dimen.rounded_corner_radius_top); 623 final int newRoundedDefaultBottom = mContext.getResources().getDimensionPixelSize( 624 com.android.internal.R.dimen.rounded_corner_radius_bottom); 625 626 final boolean changed = mRoundedDefault.x != newRoundedDefault 627 || mRoundedDefaultTop.x != newRoundedDefault 628 || mRoundedDefaultBottom.x != newRoundedDefault; 629 630 if (changed) { 631 // If config_roundedCornerMultipleRadius set as true, ScreenDecorations respect the 632 // (width, height) size of drawable/rounded.xml instead of rounded_corner_radius 633 if (mIsRoundedCornerMultipleRadius) { 634 Drawable d = mContext.getDrawable(R.drawable.rounded); 635 mRoundedDefault.set(d.getIntrinsicWidth(), d.getIntrinsicHeight()); 636 d = mContext.getDrawable(R.drawable.rounded_corner_top); 637 mRoundedDefaultTop.set(d.getIntrinsicWidth(), d.getIntrinsicHeight()); 638 d = mContext.getDrawable(R.drawable.rounded_corner_bottom); 639 mRoundedDefaultBottom.set(d.getIntrinsicWidth(), d.getIntrinsicHeight()); 640 } else { 641 mRoundedDefault.set(newRoundedDefault, newRoundedDefault); 642 mRoundedDefaultTop.set(newRoundedDefaultTop, newRoundedDefaultTop); 643 mRoundedDefaultBottom.set(newRoundedDefaultBottom, newRoundedDefaultBottom); 644 } 645 onTuningChanged(SIZE, null); 646 } 647 } 648 updateRoundedCornerView(@oundsPosition int pos, int id)649 private void updateRoundedCornerView(@BoundsPosition int pos, int id) { 650 final View rounded = mOverlays[pos].findViewById(id); 651 if (rounded == null) { 652 return; 653 } 654 rounded.setVisibility(View.GONE); 655 if (shouldShowRoundedCorner(pos)) { 656 final int gravity = getRoundedCornerGravity(pos, id == R.id.left); 657 ((FrameLayout.LayoutParams) rounded.getLayoutParams()).gravity = gravity; 658 setRoundedCornerOrientation(rounded, gravity); 659 rounded.setVisibility(View.VISIBLE); 660 } 661 } 662 getRoundedCornerGravity(@oundsPosition int pos, boolean isStart)663 private int getRoundedCornerGravity(@BoundsPosition int pos, boolean isStart) { 664 final int rotatedPos = getBoundPositionFromRotation(pos, mRotation); 665 switch (rotatedPos) { 666 case BOUNDS_POSITION_LEFT: 667 return isStart ? Gravity.TOP | Gravity.LEFT : Gravity.BOTTOM | Gravity.LEFT; 668 case BOUNDS_POSITION_TOP: 669 return isStart ? Gravity.TOP | Gravity.LEFT : Gravity.TOP | Gravity.RIGHT; 670 case BOUNDS_POSITION_RIGHT: 671 return isStart ? Gravity.TOP | Gravity.RIGHT : Gravity.BOTTOM | Gravity.RIGHT; 672 case BOUNDS_POSITION_BOTTOM: 673 return isStart ? Gravity.BOTTOM | Gravity.LEFT : Gravity.BOTTOM | Gravity.RIGHT; 674 default: 675 throw new IllegalArgumentException("Incorrect position: " + rotatedPos); 676 } 677 } 678 679 /** 680 * Configures the rounded corner drawable's view matrix based on the gravity. 681 * 682 * The gravity describes which corner to configure for, and the drawable we are rotating is 683 * assumed to be oriented for the top-left corner of the device regardless of the target corner. 684 * Therefore we need to rotate 180 degrees to get a bottom-left corner, and mirror in the x- or 685 * y-axis for the top-right and bottom-left corners. 686 */ setRoundedCornerOrientation(View corner, int gravity)687 private void setRoundedCornerOrientation(View corner, int gravity) { 688 corner.setRotation(0); 689 corner.setScaleX(1); 690 corner.setScaleY(1); 691 switch (gravity) { 692 case Gravity.TOP | Gravity.LEFT: 693 return; 694 case Gravity.TOP | Gravity.RIGHT: 695 corner.setScaleX(-1); // flip X axis 696 return; 697 case Gravity.BOTTOM | Gravity.LEFT: 698 corner.setScaleY(-1); // flip Y axis 699 return; 700 case Gravity.BOTTOM | Gravity.RIGHT: 701 corner.setRotation(180); 702 return; 703 default: 704 throw new IllegalArgumentException("Unsupported gravity: " + gravity); 705 } 706 } hasRoundedCorners()707 private boolean hasRoundedCorners() { 708 return mRoundedDefault.x > 0 709 || mRoundedDefaultBottom.x > 0 710 || mRoundedDefaultTop.x > 0 711 || mIsRoundedCornerMultipleRadius; 712 } 713 shouldShowRoundedCorner(@oundsPosition int pos)714 private boolean shouldShowRoundedCorner(@BoundsPosition int pos) { 715 if (!hasRoundedCorners()) { 716 return false; 717 } 718 719 DisplayCutout cutout = getCutout(); 720 // for cutout is null or cutout with only waterfall. 721 final boolean emptyBoundsOrWaterfall = cutout == null || cutout.isBoundsEmpty(); 722 // Shows rounded corner on left and right overlays only when there is no top or bottom 723 // cutout. 724 final int rotatedTop = getBoundPositionFromRotation(BOUNDS_POSITION_TOP, mRotation); 725 final int rotatedBottom = getBoundPositionFromRotation(BOUNDS_POSITION_BOTTOM, mRotation); 726 if (emptyBoundsOrWaterfall || !cutout.getBoundingRectsAll()[rotatedTop].isEmpty() 727 || !cutout.getBoundingRectsAll()[rotatedBottom].isEmpty()) { 728 return pos == BOUNDS_POSITION_TOP || pos == BOUNDS_POSITION_BOTTOM; 729 } else { 730 return pos == BOUNDS_POSITION_LEFT || pos == BOUNDS_POSITION_RIGHT; 731 } 732 } 733 shouldDrawCutout()734 private boolean shouldDrawCutout() { 735 return shouldDrawCutout(mContext); 736 } 737 shouldDrawCutout(Context context)738 static boolean shouldDrawCutout(Context context) { 739 return context.getResources().getBoolean( 740 com.android.internal.R.bool.config_fillMainBuiltInDisplayCutout); 741 } 742 updateLayoutParams()743 private void updateLayoutParams() { 744 if (mOverlays == null) { 745 return; 746 } 747 for (int i = 0; i < BOUNDS_POSITION_LENGTH; i++) { 748 if (mOverlays[i] == null) { 749 continue; 750 } 751 mWindowManager.updateViewLayout(mOverlays[i], getWindowLayoutParams(i)); 752 } 753 } 754 755 @Override onTuningChanged(String key, String newValue)756 public void onTuningChanged(String key, String newValue) { 757 mHandler.post(() -> { 758 if (mOverlays == null) return; 759 if (SIZE.equals(key)) { 760 Point size = mRoundedDefault; 761 Point sizeTop = mRoundedDefaultTop; 762 Point sizeBottom = mRoundedDefaultBottom; 763 if (newValue != null) { 764 try { 765 int s = (int) (Integer.parseInt(newValue) * mDensity); 766 size = new Point(s, s); 767 } catch (Exception e) { 768 } 769 } 770 updateRoundedCornerSize(size, sizeTop, sizeBottom); 771 } 772 }); 773 } 774 updateRoundedCornerSize( Point sizeDefault, Point sizeTop, Point sizeBottom)775 private void updateRoundedCornerSize( 776 Point sizeDefault, 777 Point sizeTop, 778 Point sizeBottom) { 779 if (mOverlays == null) { 780 return; 781 } 782 if (sizeTop.x == 0) { 783 sizeTop = sizeDefault; 784 } 785 if (sizeBottom.x == 0) { 786 sizeBottom = sizeDefault; 787 } 788 789 for (int i = 0; i < BOUNDS_POSITION_LENGTH; i++) { 790 if (mOverlays[i] == null) { 791 continue; 792 } 793 if (i == BOUNDS_POSITION_LEFT || i == BOUNDS_POSITION_RIGHT) { 794 if (mRotation == ROTATION_270) { 795 setSize(mOverlays[i].findViewById(R.id.left), sizeBottom); 796 setSize(mOverlays[i].findViewById(R.id.right), sizeTop); 797 } else { 798 setSize(mOverlays[i].findViewById(R.id.left), sizeTop); 799 setSize(mOverlays[i].findViewById(R.id.right), sizeBottom); 800 } 801 } else if (i == BOUNDS_POSITION_TOP) { 802 setSize(mOverlays[i].findViewById(R.id.left), sizeTop); 803 setSize(mOverlays[i].findViewById(R.id.right), sizeTop); 804 } else if (i == BOUNDS_POSITION_BOTTOM) { 805 setSize(mOverlays[i].findViewById(R.id.left), sizeBottom); 806 setSize(mOverlays[i].findViewById(R.id.right), sizeBottom); 807 } 808 } 809 } 810 811 @VisibleForTesting setSize(View view, Point pixelSize)812 protected void setSize(View view, Point pixelSize) { 813 LayoutParams params = view.getLayoutParams(); 814 params.width = pixelSize.x; 815 params.height = pixelSize.y; 816 view.setLayoutParams(params); 817 } 818 819 public static class DisplayCutoutView extends View implements DisplayManager.DisplayListener, 820 RegionInterceptableView { 821 822 private static final float HIDDEN_CAMERA_PROTECTION_SCALE = 0.5f; 823 824 private Display.Mode mDisplayMode = null; 825 private final DisplayInfo mInfo = new DisplayInfo(); 826 private final Paint mPaint = new Paint(); 827 private final List<Rect> mBounds = new ArrayList(); 828 private final Rect mBoundingRect = new Rect(); 829 private final Path mBoundingPath = new Path(); 830 // Don't initialize these yet because they may never exist 831 private RectF mProtectionRect; 832 private RectF mProtectionRectOrig; 833 private Path mProtectionPath; 834 private Path mProtectionPathOrig; 835 private Rect mTotalBounds = new Rect(); 836 // Whether or not to show the cutout protection path 837 private boolean mShowProtection = false; 838 839 private final int[] mLocation = new int[2]; 840 private final ScreenDecorations mDecorations; 841 private int mColor = Color.BLACK; 842 private int mRotation; 843 private int mInitialPosition; 844 private int mPosition; 845 private float mCameraProtectionProgress = HIDDEN_CAMERA_PROTECTION_SCALE; 846 private ValueAnimator mCameraProtectionAnimator; 847 DisplayCutoutView(Context context, @BoundsPosition int pos, ScreenDecorations decorations)848 public DisplayCutoutView(Context context, @BoundsPosition int pos, 849 ScreenDecorations decorations) { 850 super(context); 851 mInitialPosition = pos; 852 mDecorations = decorations; 853 setId(R.id.display_cutout); 854 if (DEBUG) { 855 getViewTreeObserver().addOnDrawListener(() -> Log.i(TAG, 856 getWindowTitleByPos(pos) + " drawn in rot " + mRotation)); 857 } 858 } 859 setColor(int color)860 public void setColor(int color) { 861 mColor = color; 862 invalidate(); 863 } 864 865 @Override onAttachedToWindow()866 protected void onAttachedToWindow() { 867 super.onAttachedToWindow(); 868 mContext.getSystemService(DisplayManager.class).registerDisplayListener(this, 869 getHandler()); 870 update(); 871 } 872 873 @Override onDetachedFromWindow()874 protected void onDetachedFromWindow() { 875 super.onDetachedFromWindow(); 876 mContext.getSystemService(DisplayManager.class).unregisterDisplayListener(this); 877 } 878 879 @Override onDraw(Canvas canvas)880 protected void onDraw(Canvas canvas) { 881 super.onDraw(canvas); 882 getLocationOnScreen(mLocation); 883 canvas.translate(-mLocation[0], -mLocation[1]); 884 885 if (!mBoundingPath.isEmpty()) { 886 mPaint.setColor(mColor); 887 mPaint.setStyle(Paint.Style.FILL); 888 mPaint.setAntiAlias(true); 889 canvas.drawPath(mBoundingPath, mPaint); 890 } 891 if (mCameraProtectionProgress > HIDDEN_CAMERA_PROTECTION_SCALE 892 && !mProtectionRect.isEmpty()) { 893 canvas.scale(mCameraProtectionProgress, mCameraProtectionProgress, 894 mProtectionRect.centerX(), mProtectionRect.centerY()); 895 canvas.drawPath(mProtectionPath, mPaint); 896 } 897 } 898 899 @Override onDisplayAdded(int displayId)900 public void onDisplayAdded(int displayId) { 901 } 902 903 @Override onDisplayRemoved(int displayId)904 public void onDisplayRemoved(int displayId) { 905 } 906 907 @Override onDisplayChanged(int displayId)908 public void onDisplayChanged(int displayId) { 909 Display.Mode oldMode = mDisplayMode; 910 mDisplayMode = getDisplay().getMode(); 911 912 // Display mode hasn't meaningfully changed, we can ignore it 913 if (!modeChanged(oldMode, mDisplayMode)) { 914 return; 915 } 916 917 if (displayId == getDisplay().getDisplayId()) { 918 update(); 919 } 920 } 921 modeChanged(Display.Mode oldMode, Display.Mode newMode)922 private boolean modeChanged(Display.Mode oldMode, Display.Mode newMode) { 923 if (oldMode == null) { 924 return true; 925 } 926 927 boolean changed = false; 928 changed |= oldMode.getPhysicalHeight() != newMode.getPhysicalHeight(); 929 changed |= oldMode.getPhysicalWidth() != newMode.getPhysicalWidth(); 930 // We purposely ignore refresh rate and id changes here, because we don't need to 931 // invalidate for those, and they can trigger the refresh rate to increase 932 933 return changed; 934 } 935 setRotation(int rotation)936 public void setRotation(int rotation) { 937 mRotation = rotation; 938 update(); 939 } 940 setProtection(Path protectionPath, Rect pathBounds)941 void setProtection(Path protectionPath, Rect pathBounds) { 942 if (mProtectionPathOrig == null) { 943 mProtectionPathOrig = new Path(); 944 mProtectionPath = new Path(); 945 } 946 mProtectionPathOrig.set(protectionPath); 947 if (mProtectionRectOrig == null) { 948 mProtectionRectOrig = new RectF(); 949 mProtectionRect = new RectF(); 950 } 951 mProtectionRectOrig.set(pathBounds); 952 } 953 setShowProtection(boolean shouldShow)954 void setShowProtection(boolean shouldShow) { 955 if (mShowProtection == shouldShow) { 956 return; 957 } 958 959 mShowProtection = shouldShow; 960 updateBoundingPath(); 961 // Delay the relayout until the end of the animation when hiding the cutout, 962 // otherwise we'd clip it. 963 if (mShowProtection) { 964 requestLayout(); 965 } 966 if (mCameraProtectionAnimator != null) { 967 mCameraProtectionAnimator.cancel(); 968 } 969 mCameraProtectionAnimator = ValueAnimator.ofFloat(mCameraProtectionProgress, 970 mShowProtection ? 1.0f : HIDDEN_CAMERA_PROTECTION_SCALE).setDuration(750); 971 mCameraProtectionAnimator.setInterpolator(Interpolators.DECELERATE_QUINT); 972 mCameraProtectionAnimator.addUpdateListener(animation -> { 973 mCameraProtectionProgress = (float) animation.getAnimatedValue(); 974 invalidate(); 975 }); 976 mCameraProtectionAnimator.addListener(new AnimatorListenerAdapter() { 977 @Override 978 public void onAnimationEnd(Animator animation) { 979 mCameraProtectionAnimator = null; 980 if (!mShowProtection) { 981 requestLayout(); 982 } 983 } 984 }); 985 mCameraProtectionAnimator.start(); 986 } 987 update()988 private void update() { 989 if (!isAttachedToWindow() || mDecorations.mPendingRotationChange) { 990 return; 991 } 992 mPosition = getBoundPositionFromRotation(mInitialPosition, mRotation); 993 requestLayout(); 994 getDisplay().getDisplayInfo(mInfo); 995 mBounds.clear(); 996 mBoundingRect.setEmpty(); 997 mBoundingPath.reset(); 998 int newVisible; 999 if (shouldDrawCutout(getContext()) && hasCutout()) { 1000 mBounds.addAll(mInfo.displayCutout.getBoundingRects()); 1001 localBounds(mBoundingRect); 1002 updateGravity(); 1003 updateBoundingPath(); 1004 invalidate(); 1005 newVisible = VISIBLE; 1006 } else { 1007 newVisible = GONE; 1008 } 1009 if (newVisible != getVisibility()) { 1010 setVisibility(newVisible); 1011 } 1012 } 1013 updateBoundingPath()1014 private void updateBoundingPath() { 1015 int lw = mInfo.logicalWidth; 1016 int lh = mInfo.logicalHeight; 1017 1018 boolean flipped = mInfo.rotation == ROTATION_90 || mInfo.rotation == ROTATION_270; 1019 1020 int dw = flipped ? lh : lw; 1021 int dh = flipped ? lw : lh; 1022 1023 Path path = DisplayCutout.pathFromResources(getResources(), dw, dh); 1024 if (path != null) { 1025 mBoundingPath.set(path); 1026 } else { 1027 mBoundingPath.reset(); 1028 } 1029 Matrix m = new Matrix(); 1030 transformPhysicalToLogicalCoordinates(mInfo.rotation, dw, dh, m); 1031 mBoundingPath.transform(m); 1032 if (mProtectionPathOrig != null) { 1033 // Reset the protection path so we don't aggregate rotations 1034 mProtectionPath.set(mProtectionPathOrig); 1035 mProtectionPath.transform(m); 1036 m.mapRect(mProtectionRect, mProtectionRectOrig); 1037 } 1038 } 1039 transformPhysicalToLogicalCoordinates(@urface.Rotation int rotation, @Dimension int physicalWidth, @Dimension int physicalHeight, Matrix out)1040 private static void transformPhysicalToLogicalCoordinates(@Surface.Rotation int rotation, 1041 @Dimension int physicalWidth, @Dimension int physicalHeight, Matrix out) { 1042 switch (rotation) { 1043 case ROTATION_0: 1044 out.reset(); 1045 break; 1046 case ROTATION_90: 1047 out.setRotate(270); 1048 out.postTranslate(0, physicalWidth); 1049 break; 1050 case ROTATION_180: 1051 out.setRotate(180); 1052 out.postTranslate(physicalWidth, physicalHeight); 1053 break; 1054 case ROTATION_270: 1055 out.setRotate(90); 1056 out.postTranslate(physicalHeight, 0); 1057 break; 1058 default: 1059 throw new IllegalArgumentException("Unknown rotation: " + rotation); 1060 } 1061 } 1062 updateGravity()1063 private void updateGravity() { 1064 LayoutParams lp = getLayoutParams(); 1065 if (lp instanceof FrameLayout.LayoutParams) { 1066 FrameLayout.LayoutParams flp = (FrameLayout.LayoutParams) lp; 1067 int newGravity = getGravity(mInfo.displayCutout); 1068 if (flp.gravity != newGravity) { 1069 flp.gravity = newGravity; 1070 setLayoutParams(flp); 1071 } 1072 } 1073 } 1074 hasCutout()1075 private boolean hasCutout() { 1076 final DisplayCutout displayCutout = mInfo.displayCutout; 1077 if (displayCutout == null) { 1078 return false; 1079 } 1080 1081 if (mPosition == BOUNDS_POSITION_LEFT) { 1082 return !displayCutout.getBoundingRectLeft().isEmpty(); 1083 } else if (mPosition == BOUNDS_POSITION_TOP) { 1084 return !displayCutout.getBoundingRectTop().isEmpty(); 1085 } else if (mPosition == BOUNDS_POSITION_BOTTOM) { 1086 return !displayCutout.getBoundingRectBottom().isEmpty(); 1087 } else if (mPosition == BOUNDS_POSITION_RIGHT) { 1088 return !displayCutout.getBoundingRectRight().isEmpty(); 1089 } 1090 return false; 1091 } 1092 1093 @Override onMeasure(int widthMeasureSpec, int heightMeasureSpec)1094 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 1095 if (mBounds.isEmpty()) { 1096 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 1097 return; 1098 } 1099 1100 if (mShowProtection) { 1101 // Make sure that our measured height encompases the protection 1102 mTotalBounds.union(mBoundingRect); 1103 mTotalBounds.union((int) mProtectionRect.left, (int) mProtectionRect.top, 1104 (int) mProtectionRect.right, (int) mProtectionRect.bottom); 1105 setMeasuredDimension( 1106 resolveSizeAndState(mTotalBounds.width(), widthMeasureSpec, 0), 1107 resolveSizeAndState(mTotalBounds.height(), heightMeasureSpec, 0)); 1108 } else { 1109 setMeasuredDimension( 1110 resolveSizeAndState(mBoundingRect.width(), widthMeasureSpec, 0), 1111 resolveSizeAndState(mBoundingRect.height(), heightMeasureSpec, 0)); 1112 } 1113 } 1114 boundsFromDirection(DisplayCutout displayCutout, int gravity, Rect out)1115 public static void boundsFromDirection(DisplayCutout displayCutout, int gravity, 1116 Rect out) { 1117 switch (gravity) { 1118 case Gravity.TOP: 1119 out.set(displayCutout.getBoundingRectTop()); 1120 break; 1121 case Gravity.LEFT: 1122 out.set(displayCutout.getBoundingRectLeft()); 1123 break; 1124 case Gravity.BOTTOM: 1125 out.set(displayCutout.getBoundingRectBottom()); 1126 break; 1127 case Gravity.RIGHT: 1128 out.set(displayCutout.getBoundingRectRight()); 1129 break; 1130 default: 1131 out.setEmpty(); 1132 } 1133 } 1134 localBounds(Rect out)1135 private void localBounds(Rect out) { 1136 DisplayCutout displayCutout = mInfo.displayCutout; 1137 boundsFromDirection(displayCutout, getGravity(displayCutout), out); 1138 } 1139 getGravity(DisplayCutout displayCutout)1140 private int getGravity(DisplayCutout displayCutout) { 1141 if (mPosition == BOUNDS_POSITION_LEFT) { 1142 if (!displayCutout.getBoundingRectLeft().isEmpty()) { 1143 return Gravity.LEFT; 1144 } 1145 } else if (mPosition == BOUNDS_POSITION_TOP) { 1146 if (!displayCutout.getBoundingRectTop().isEmpty()) { 1147 return Gravity.TOP; 1148 } 1149 } else if (mPosition == BOUNDS_POSITION_BOTTOM) { 1150 if (!displayCutout.getBoundingRectBottom().isEmpty()) { 1151 return Gravity.BOTTOM; 1152 } 1153 } else if (mPosition == BOUNDS_POSITION_RIGHT) { 1154 if (!displayCutout.getBoundingRectRight().isEmpty()) { 1155 return Gravity.RIGHT; 1156 } 1157 } 1158 return Gravity.NO_GRAVITY; 1159 } 1160 1161 @Override shouldInterceptTouch()1162 public boolean shouldInterceptTouch() { 1163 return mInfo.displayCutout != null && getVisibility() == VISIBLE; 1164 } 1165 1166 @Override getInterceptRegion()1167 public Region getInterceptRegion() { 1168 if (mInfo.displayCutout == null) { 1169 return null; 1170 } 1171 1172 View rootView = getRootView(); 1173 Region cutoutBounds = rectsToRegion( 1174 mInfo.displayCutout.getBoundingRects()); 1175 1176 // Transform to window's coordinate space 1177 rootView.getLocationOnScreen(mLocation); 1178 cutoutBounds.translate(-mLocation[0], -mLocation[1]); 1179 1180 // Intersect with window's frame 1181 cutoutBounds.op(rootView.getLeft(), rootView.getTop(), rootView.getRight(), 1182 rootView.getBottom(), Region.Op.INTERSECT); 1183 1184 return cutoutBounds; 1185 } 1186 } 1187 1188 /** 1189 * A pre-draw listener, that cancels the draw and restarts the traversal with the updated 1190 * window attributes. 1191 */ 1192 private class RestartingPreDrawListener implements ViewTreeObserver.OnPreDrawListener { 1193 1194 private final View mView; 1195 private final int mTargetRotation; 1196 private final int mPosition; 1197 RestartingPreDrawListener(View view, @BoundsPosition int position, int targetRotation)1198 private RestartingPreDrawListener(View view, @BoundsPosition int position, 1199 int targetRotation) { 1200 mView = view; 1201 mTargetRotation = targetRotation; 1202 mPosition = position; 1203 } 1204 1205 @Override onPreDraw()1206 public boolean onPreDraw() { 1207 mView.getViewTreeObserver().removeOnPreDrawListener(this); 1208 1209 if (mTargetRotation == mRotation) { 1210 if (DEBUG) { 1211 Log.i(TAG, getWindowTitleByPos(mPosition) + " already in target rot " 1212 + mTargetRotation + ", allow draw without restarting it"); 1213 } 1214 return true; 1215 } 1216 1217 mPendingRotationChange = false; 1218 // This changes the window attributes - we need to restart the traversal for them to 1219 // take effect. 1220 updateOrientation(); 1221 if (DEBUG) { 1222 Log.i(TAG, getWindowTitleByPos(mPosition) 1223 + " restarting listener fired, restarting draw for rot " + mRotation); 1224 } 1225 mView.invalidate(); 1226 return false; 1227 } 1228 } 1229 1230 /** 1231 * A pre-draw listener, that validates that the rotation we draw in matches the displays 1232 * rotation before continuing the draw. 1233 * 1234 * This is to prevent a race condition, where we have not received the display changed event 1235 * yet, and would thus draw in an old orientation. 1236 */ 1237 private class ValidatingPreDrawListener implements ViewTreeObserver.OnPreDrawListener { 1238 1239 private final View mView; 1240 ValidatingPreDrawListener(View view)1241 public ValidatingPreDrawListener(View view) { 1242 mView = view; 1243 } 1244 1245 @Override onPreDraw()1246 public boolean onPreDraw() { 1247 final int displayRotation = mContext.getDisplay().getRotation(); 1248 if (displayRotation != mRotation && !mPendingRotationChange) { 1249 if (DEBUG) { 1250 Log.i(TAG, "Drawing rot " + mRotation + ", but display is at rot " 1251 + displayRotation + ". Restarting draw"); 1252 } 1253 mView.invalidate(); 1254 return false; 1255 } 1256 return true; 1257 } 1258 } 1259 } 1260