1 /* 2 * Copyright (C) 2009 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 17 package android.service.wallpaper; 18 19 import android.content.res.TypedArray; 20 import android.graphics.Canvas; 21 import android.view.WindowInsets; 22 23 import com.android.internal.R; 24 import com.android.internal.os.HandlerCaller; 25 import com.android.internal.util.ScreenShapeHelper; 26 import com.android.internal.view.BaseIWindow; 27 import com.android.internal.view.BaseSurfaceHolder; 28 29 import android.annotation.SdkConstant; 30 import android.annotation.SdkConstant.SdkConstantType; 31 import android.app.Service; 32 import android.app.WallpaperManager; 33 import android.content.Context; 34 import android.content.Intent; 35 import android.content.res.Configuration; 36 import android.graphics.PixelFormat; 37 import android.graphics.Rect; 38 import android.hardware.display.DisplayManager; 39 import android.hardware.display.DisplayManager.DisplayListener; 40 import android.os.Bundle; 41 import android.os.IBinder; 42 import android.os.Looper; 43 import android.os.Message; 44 import android.os.RemoteException; 45 import android.util.Log; 46 import android.view.Display; 47 import android.view.Gravity; 48 import android.view.IWindowSession; 49 import android.view.InputChannel; 50 import android.view.InputDevice; 51 import android.view.InputEvent; 52 import android.view.InputEventReceiver; 53 import android.view.MotionEvent; 54 import android.view.SurfaceHolder; 55 import android.view.View; 56 import android.view.ViewGroup; 57 import android.view.WindowManager; 58 import android.view.WindowManager.LayoutParams; 59 import android.view.WindowManagerGlobal; 60 61 import java.io.FileDescriptor; 62 import java.io.PrintWriter; 63 import java.util.ArrayList; 64 65 /** 66 * A wallpaper service is responsible for showing a live wallpaper behind 67 * applications that would like to sit on top of it. This service object 68 * itself does very little -- its only purpose is to generate instances of 69 * {@link Engine} as needed. Implementing a wallpaper thus 70 * involves subclassing from this, subclassing an Engine implementation, 71 * and implementing {@link #onCreateEngine()} to return a new instance of 72 * your engine. 73 */ 74 public abstract class WallpaperService extends Service { 75 /** 76 * The {@link Intent} that must be declared as handled by the service. 77 * To be supported, the service must also require the 78 * {@link android.Manifest.permission#BIND_WALLPAPER} permission so 79 * that other applications can not abuse it. 80 */ 81 @SdkConstant(SdkConstantType.SERVICE_ACTION) 82 public static final String SERVICE_INTERFACE = 83 "android.service.wallpaper.WallpaperService"; 84 85 /** 86 * Name under which a WallpaperService component publishes information 87 * about itself. This meta-data must reference an XML resource containing 88 * a <code><{@link android.R.styleable#Wallpaper wallpaper}></code> 89 * tag. 90 */ 91 public static final String SERVICE_META_DATA = "android.service.wallpaper"; 92 93 static final String TAG = "WallpaperService"; 94 static final boolean DEBUG = false; 95 96 private static final int DO_ATTACH = 10; 97 private static final int DO_DETACH = 20; 98 private static final int DO_SET_DESIRED_SIZE = 30; 99 private static final int DO_SET_DISPLAY_PADDING = 40; 100 101 private static final int MSG_UPDATE_SURFACE = 10000; 102 private static final int MSG_VISIBILITY_CHANGED = 10010; 103 private static final int MSG_WALLPAPER_OFFSETS = 10020; 104 private static final int MSG_WALLPAPER_COMMAND = 10025; 105 private static final int MSG_WINDOW_RESIZED = 10030; 106 private static final int MSG_WINDOW_MOVED = 10035; 107 private static final int MSG_TOUCH_EVENT = 10040; 108 109 private final ArrayList<Engine> mActiveEngines 110 = new ArrayList<Engine>(); 111 112 static final class WallpaperCommand { 113 String action; 114 int x; 115 int y; 116 int z; 117 Bundle extras; 118 boolean sync; 119 } 120 121 /** 122 * The actual implementation of a wallpaper. A wallpaper service may 123 * have multiple instances running (for example as a real wallpaper 124 * and as a preview), each of which is represented by its own Engine 125 * instance. You must implement {@link WallpaperService#onCreateEngine()} 126 * to return your concrete Engine implementation. 127 */ 128 public class Engine { 129 IWallpaperEngineWrapper mIWallpaperEngine; 130 131 // Copies from mIWallpaperEngine. 132 HandlerCaller mCaller; 133 IWallpaperConnection mConnection; 134 IBinder mWindowToken; 135 136 boolean mInitializing = true; 137 boolean mVisible; 138 boolean mReportedVisible; 139 boolean mDestroyed; 140 141 // Current window state. 142 boolean mCreated; 143 boolean mSurfaceCreated; 144 boolean mIsCreating; 145 boolean mDrawingAllowed; 146 boolean mOffsetsChanged; 147 boolean mFixedSizeAllowed; 148 int mWidth; 149 int mHeight; 150 int mFormat; 151 int mType; 152 int mCurWidth; 153 int mCurHeight; 154 int mWindowFlags = WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE; 155 int mWindowPrivateFlags = 156 WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS; 157 int mCurWindowFlags = mWindowFlags; 158 int mCurWindowPrivateFlags = mWindowPrivateFlags; 159 final Rect mVisibleInsets = new Rect(); 160 final Rect mWinFrame = new Rect(); 161 final Rect mOverscanInsets = new Rect(); 162 final Rect mContentInsets = new Rect(); 163 final Rect mStableInsets = new Rect(); 164 final Rect mOutsets = new Rect(); 165 final Rect mDispatchedOverscanInsets = new Rect(); 166 final Rect mDispatchedContentInsets = new Rect(); 167 final Rect mDispatchedStableInsets = new Rect(); 168 final Rect mDispatchedOutsets = new Rect(); 169 final Rect mFinalSystemInsets = new Rect(); 170 final Rect mFinalStableInsets = new Rect(); 171 final Rect mBackdropFrame = new Rect(); 172 final Configuration mConfiguration = new Configuration(); 173 174 final WindowManager.LayoutParams mLayout 175 = new WindowManager.LayoutParams(); 176 IWindowSession mSession; 177 InputChannel mInputChannel; 178 179 final Object mLock = new Object(); 180 boolean mOffsetMessageEnqueued; 181 float mPendingXOffset; 182 float mPendingYOffset; 183 float mPendingXOffsetStep; 184 float mPendingYOffsetStep; 185 boolean mPendingSync; 186 MotionEvent mPendingMove; 187 188 DisplayManager mDisplayManager; 189 Display mDisplay; 190 private int mDisplayState; 191 192 final BaseSurfaceHolder mSurfaceHolder = new BaseSurfaceHolder() { 193 { 194 mRequestedFormat = PixelFormat.RGBX_8888; 195 } 196 197 @Override 198 public boolean onAllowLockCanvas() { 199 return mDrawingAllowed; 200 } 201 202 @Override 203 public void onRelayoutContainer() { 204 Message msg = mCaller.obtainMessage(MSG_UPDATE_SURFACE); 205 mCaller.sendMessage(msg); 206 } 207 208 @Override 209 public void onUpdateSurface() { 210 Message msg = mCaller.obtainMessage(MSG_UPDATE_SURFACE); 211 mCaller.sendMessage(msg); 212 } 213 214 public boolean isCreating() { 215 return mIsCreating; 216 } 217 218 @Override 219 public void setFixedSize(int width, int height) { 220 if (!mFixedSizeAllowed) { 221 // Regular apps can't do this. It can only work for 222 // certain designs of window animations, so you can't 223 // rely on it. 224 throw new UnsupportedOperationException( 225 "Wallpapers currently only support sizing from layout"); 226 } 227 super.setFixedSize(width, height); 228 } 229 230 public void setKeepScreenOn(boolean screenOn) { 231 throw new UnsupportedOperationException( 232 "Wallpapers do not support keep screen on"); 233 } 234 235 @Override 236 public Canvas lockCanvas() { 237 if (mDisplayState == Display.STATE_DOZE 238 || mDisplayState == Display.STATE_DOZE_SUSPEND) { 239 try { 240 mSession.pokeDrawLock(mWindow); 241 } catch (RemoteException e) { 242 // System server died, can be ignored. 243 } 244 } 245 return super.lockCanvas(); 246 } 247 }; 248 249 final class WallpaperInputEventReceiver extends InputEventReceiver { 250 public WallpaperInputEventReceiver(InputChannel inputChannel, Looper looper) { 251 super(inputChannel, looper); 252 } 253 254 @Override 255 public void onInputEvent(InputEvent event) { 256 boolean handled = false; 257 try { 258 if (event instanceof MotionEvent 259 && (event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 260 MotionEvent dup = MotionEvent.obtainNoHistory((MotionEvent)event); 261 dispatchPointer(dup); 262 handled = true; 263 } 264 } finally { 265 finishInputEvent(event, handled); 266 } 267 } 268 } 269 WallpaperInputEventReceiver mInputEventReceiver; 270 271 final BaseIWindow mWindow = new BaseIWindow() { 272 @Override 273 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 274 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 275 Configuration newConfig, Rect backDropRect, boolean forceLayout, 276 boolean alwaysConsumeNavBar) { 277 Message msg = mCaller.obtainMessageIO(MSG_WINDOW_RESIZED, 278 reportDraw ? 1 : 0, outsets); 279 mCaller.sendMessage(msg); 280 } 281 282 @Override 283 public void moved(int newX, int newY) { 284 Message msg = mCaller.obtainMessageII(MSG_WINDOW_MOVED, newX, newY); 285 mCaller.sendMessage(msg); 286 } 287 288 @Override 289 public void dispatchAppVisibility(boolean visible) { 290 // We don't do this in preview mode; we'll let the preview 291 // activity tell us when to run. 292 if (!mIWallpaperEngine.mIsPreview) { 293 Message msg = mCaller.obtainMessageI(MSG_VISIBILITY_CHANGED, 294 visible ? 1 : 0); 295 mCaller.sendMessage(msg); 296 } 297 } 298 299 @Override 300 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 301 boolean sync) { 302 synchronized (mLock) { 303 if (DEBUG) Log.v(TAG, "Dispatch wallpaper offsets: " + x + ", " + y); 304 mPendingXOffset = x; 305 mPendingYOffset = y; 306 mPendingXOffsetStep = xStep; 307 mPendingYOffsetStep = yStep; 308 if (sync) { 309 mPendingSync = true; 310 } 311 if (!mOffsetMessageEnqueued) { 312 mOffsetMessageEnqueued = true; 313 Message msg = mCaller.obtainMessage(MSG_WALLPAPER_OFFSETS); 314 mCaller.sendMessage(msg); 315 } 316 } 317 } 318 319 @Override 320 public void dispatchWallpaperCommand(String action, int x, int y, 321 int z, Bundle extras, boolean sync) { 322 synchronized (mLock) { 323 if (DEBUG) Log.v(TAG, "Dispatch wallpaper command: " + x + ", " + y); 324 WallpaperCommand cmd = new WallpaperCommand(); 325 cmd.action = action; 326 cmd.x = x; 327 cmd.y = y; 328 cmd.z = z; 329 cmd.extras = extras; 330 cmd.sync = sync; 331 Message msg = mCaller.obtainMessage(MSG_WALLPAPER_COMMAND); 332 msg.obj = cmd; 333 mCaller.sendMessage(msg); 334 } 335 } 336 }; 337 338 /** 339 * Provides access to the surface in which this wallpaper is drawn. 340 */ 341 public SurfaceHolder getSurfaceHolder() { 342 return mSurfaceHolder; 343 } 344 345 /** 346 * Convenience for {@link WallpaperManager#getDesiredMinimumWidth() 347 * WallpaperManager.getDesiredMinimumWidth()}, returning the width 348 * that the system would like this wallpaper to run in. 349 */ 350 public int getDesiredMinimumWidth() { 351 return mIWallpaperEngine.mReqWidth; 352 } 353 354 /** 355 * Convenience for {@link WallpaperManager#getDesiredMinimumHeight() 356 * WallpaperManager.getDesiredMinimumHeight()}, returning the height 357 * that the system would like this wallpaper to run in. 358 */ 359 public int getDesiredMinimumHeight() { 360 return mIWallpaperEngine.mReqHeight; 361 } 362 363 /** 364 * Return whether the wallpaper is currently visible to the user, 365 * this is the last value supplied to 366 * {@link #onVisibilityChanged(boolean)}. 367 */ 368 public boolean isVisible() { 369 return mReportedVisible; 370 } 371 372 /** 373 * Returns true if this engine is running in preview mode -- that is, 374 * it is being shown to the user before they select it as the actual 375 * wallpaper. 376 */ 377 public boolean isPreview() { 378 return mIWallpaperEngine.mIsPreview; 379 } 380 381 /** 382 * Control whether this wallpaper will receive raw touch events 383 * from the window manager as the user interacts with the window 384 * that is currently displaying the wallpaper. By default they 385 * are turned off. If enabled, the events will be received in 386 * {@link #onTouchEvent(MotionEvent)}. 387 */ 388 public void setTouchEventsEnabled(boolean enabled) { 389 mWindowFlags = enabled 390 ? (mWindowFlags&~WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE) 391 : (mWindowFlags|WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE); 392 if (mCreated) { 393 updateSurface(false, false, false); 394 } 395 } 396 397 /** 398 * Control whether this wallpaper will receive notifications when the wallpaper 399 * has been scrolled. By default, wallpapers will receive notifications, although 400 * the default static image wallpapers do not. It is a performance optimization to 401 * set this to false. 402 * 403 * @param enabled whether the wallpaper wants to receive offset notifications 404 */ 405 public void setOffsetNotificationsEnabled(boolean enabled) { 406 mWindowPrivateFlags = enabled 407 ? (mWindowPrivateFlags | 408 WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS) 409 : (mWindowPrivateFlags & 410 ~WindowManager.LayoutParams.PRIVATE_FLAG_WANTS_OFFSET_NOTIFICATIONS); 411 if (mCreated) { 412 updateSurface(false, false, false); 413 } 414 } 415 416 /** {@hide} */ 417 public void setFixedSizeAllowed(boolean allowed) { 418 mFixedSizeAllowed = allowed; 419 } 420 421 /** 422 * Called once to initialize the engine. After returning, the 423 * engine's surface will be created by the framework. 424 */ 425 public void onCreate(SurfaceHolder surfaceHolder) { 426 } 427 428 /** 429 * Called right before the engine is going away. After this the 430 * surface will be destroyed and this Engine object is no longer 431 * valid. 432 */ 433 public void onDestroy() { 434 } 435 436 /** 437 * Called to inform you of the wallpaper becoming visible or 438 * hidden. <em>It is very important that a wallpaper only use 439 * CPU while it is visible.</em>. 440 */ 441 public void onVisibilityChanged(boolean visible) { 442 } 443 444 /** 445 * Called with the current insets that are in effect for the wallpaper. 446 * This gives you the part of the overall wallpaper surface that will 447 * generally be visible to the user (ignoring position offsets applied to it). 448 * 449 * @param insets Insets to apply. 450 */ 451 public void onApplyWindowInsets(WindowInsets insets) { 452 } 453 454 /** 455 * Called as the user performs touch-screen interaction with the 456 * window that is currently showing this wallpaper. Note that the 457 * events you receive here are driven by the actual application the 458 * user is interacting with, so if it is slow you will get fewer 459 * move events. 460 */ 461 public void onTouchEvent(MotionEvent event) { 462 } 463 464 /** 465 * Called to inform you of the wallpaper's offsets changing 466 * within its contain, corresponding to the container's 467 * call to {@link WallpaperManager#setWallpaperOffsets(IBinder, float, float) 468 * WallpaperManager.setWallpaperOffsets()}. 469 */ 470 public void onOffsetsChanged(float xOffset, float yOffset, 471 float xOffsetStep, float yOffsetStep, 472 int xPixelOffset, int yPixelOffset) { 473 } 474 475 /** 476 * Process a command that was sent to the wallpaper with 477 * {@link WallpaperManager#sendWallpaperCommand}. 478 * The default implementation does nothing, and always returns null 479 * as the result. 480 * 481 * @param action The name of the command to perform. This tells you 482 * what to do and how to interpret the rest of the arguments. 483 * @param x Generic integer parameter. 484 * @param y Generic integer parameter. 485 * @param z Generic integer parameter. 486 * @param extras Any additional parameters. 487 * @param resultRequested If true, the caller is requesting that 488 * a result, appropriate for the command, be returned back. 489 * @return If returning a result, create a Bundle and place the 490 * result data in to it. Otherwise return null. 491 */ 492 public Bundle onCommand(String action, int x, int y, int z, 493 Bundle extras, boolean resultRequested) { 494 return null; 495 } 496 497 /** 498 * Called when an application has changed the desired virtual size of 499 * the wallpaper. 500 */ 501 public void onDesiredSizeChanged(int desiredWidth, int desiredHeight) { 502 } 503 504 /** 505 * Convenience for {@link SurfaceHolder.Callback#surfaceChanged 506 * SurfaceHolder.Callback.surfaceChanged()}. 507 */ 508 public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) { 509 } 510 511 /** 512 * Convenience for {@link SurfaceHolder.Callback2#surfaceRedrawNeeded 513 * SurfaceHolder.Callback.surfaceRedrawNeeded()}. 514 */ 515 public void onSurfaceRedrawNeeded(SurfaceHolder holder) { 516 } 517 518 /** 519 * Convenience for {@link SurfaceHolder.Callback#surfaceCreated 520 * SurfaceHolder.Callback.surfaceCreated()}. 521 */ 522 public void onSurfaceCreated(SurfaceHolder holder) { 523 } 524 525 /** 526 * Convenience for {@link SurfaceHolder.Callback#surfaceDestroyed 527 * SurfaceHolder.Callback.surfaceDestroyed()}. 528 */ 529 public void onSurfaceDestroyed(SurfaceHolder holder) { 530 } 531 532 protected void dump(String prefix, FileDescriptor fd, PrintWriter out, String[] args) { 533 out.print(prefix); out.print("mInitializing="); out.print(mInitializing); 534 out.print(" mDestroyed="); out.println(mDestroyed); 535 out.print(prefix); out.print("mVisible="); out.print(mVisible); 536 out.print(" mReportedVisible="); out.println(mReportedVisible); 537 out.print(prefix); out.print("mDisplay="); out.println(mDisplay); 538 out.print(prefix); out.print("mCreated="); out.print(mCreated); 539 out.print(" mSurfaceCreated="); out.print(mSurfaceCreated); 540 out.print(" mIsCreating="); out.print(mIsCreating); 541 out.print(" mDrawingAllowed="); out.println(mDrawingAllowed); 542 out.print(prefix); out.print("mWidth="); out.print(mWidth); 543 out.print(" mCurWidth="); out.print(mCurWidth); 544 out.print(" mHeight="); out.print(mHeight); 545 out.print(" mCurHeight="); out.println(mCurHeight); 546 out.print(prefix); out.print("mType="); out.print(mType); 547 out.print(" mWindowFlags="); out.print(mWindowFlags); 548 out.print(" mCurWindowFlags="); out.println(mCurWindowFlags); 549 out.print(prefix); out.print("mWindowPrivateFlags="); out.print(mWindowPrivateFlags); 550 out.print(" mCurWindowPrivateFlags="); out.println(mCurWindowPrivateFlags); 551 out.print(prefix); out.print("mVisibleInsets="); 552 out.print(mVisibleInsets.toShortString()); 553 out.print(" mWinFrame="); out.print(mWinFrame.toShortString()); 554 out.print(" mContentInsets="); out.println(mContentInsets.toShortString()); 555 out.print(prefix); out.print("mConfiguration="); out.println(mConfiguration); 556 out.print(prefix); out.print("mLayout="); out.println(mLayout); 557 synchronized (mLock) { 558 out.print(prefix); out.print("mPendingXOffset="); out.print(mPendingXOffset); 559 out.print(" mPendingXOffset="); out.println(mPendingXOffset); 560 out.print(prefix); out.print("mPendingXOffsetStep="); 561 out.print(mPendingXOffsetStep); 562 out.print(" mPendingXOffsetStep="); out.println(mPendingXOffsetStep); 563 out.print(prefix); out.print("mOffsetMessageEnqueued="); 564 out.print(mOffsetMessageEnqueued); 565 out.print(" mPendingSync="); out.println(mPendingSync); 566 if (mPendingMove != null) { 567 out.print(prefix); out.print("mPendingMove="); out.println(mPendingMove); 568 } 569 } 570 } 571 572 private void dispatchPointer(MotionEvent event) { 573 if (event.isTouchEvent()) { 574 synchronized (mLock) { 575 if (event.getAction() == MotionEvent.ACTION_MOVE) { 576 mPendingMove = event; 577 } else { 578 mPendingMove = null; 579 } 580 } 581 Message msg = mCaller.obtainMessageO(MSG_TOUCH_EVENT, event); 582 mCaller.sendMessage(msg); 583 } else { 584 event.recycle(); 585 } 586 } 587 588 void updateSurface(boolean forceRelayout, boolean forceReport, boolean redrawNeeded) { 589 if (mDestroyed) { 590 Log.w(TAG, "Ignoring updateSurface: destroyed"); 591 } 592 593 boolean fixedSize = false; 594 int myWidth = mSurfaceHolder.getRequestedWidth(); 595 if (myWidth <= 0) myWidth = ViewGroup.LayoutParams.MATCH_PARENT; 596 else fixedSize = true; 597 int myHeight = mSurfaceHolder.getRequestedHeight(); 598 if (myHeight <= 0) myHeight = ViewGroup.LayoutParams.MATCH_PARENT; 599 else fixedSize = true; 600 601 final boolean creating = !mCreated; 602 final boolean surfaceCreating = !mSurfaceCreated; 603 final boolean formatChanged = mFormat != mSurfaceHolder.getRequestedFormat(); 604 boolean sizeChanged = mWidth != myWidth || mHeight != myHeight; 605 boolean insetsChanged = !mCreated; 606 final boolean typeChanged = mType != mSurfaceHolder.getRequestedType(); 607 final boolean flagsChanged = mCurWindowFlags != mWindowFlags || 608 mCurWindowPrivateFlags != mWindowPrivateFlags; 609 if (forceRelayout || creating || surfaceCreating || formatChanged || sizeChanged 610 || typeChanged || flagsChanged || redrawNeeded 611 || !mIWallpaperEngine.mShownReported) { 612 613 if (DEBUG) Log.v(TAG, "Changes: creating=" + creating 614 + " format=" + formatChanged + " size=" + sizeChanged); 615 616 try { 617 mWidth = myWidth; 618 mHeight = myHeight; 619 mFormat = mSurfaceHolder.getRequestedFormat(); 620 mType = mSurfaceHolder.getRequestedType(); 621 622 mLayout.x = 0; 623 mLayout.y = 0; 624 mLayout.width = myWidth; 625 mLayout.height = myHeight; 626 627 mLayout.format = mFormat; 628 629 mCurWindowFlags = mWindowFlags; 630 mLayout.flags = mWindowFlags 631 | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS 632 | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR 633 | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN 634 | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE; 635 mCurWindowPrivateFlags = mWindowPrivateFlags; 636 mLayout.privateFlags = mWindowPrivateFlags; 637 638 mLayout.memoryType = mType; 639 mLayout.token = mWindowToken; 640 641 if (!mCreated) { 642 // Retrieve watch round info 643 TypedArray windowStyle = obtainStyledAttributes( 644 com.android.internal.R.styleable.Window); 645 windowStyle.recycle(); 646 647 // Add window 648 mLayout.type = mIWallpaperEngine.mWindowType; 649 mLayout.gravity = Gravity.START|Gravity.TOP; 650 mLayout.setTitle(WallpaperService.this.getClass().getName()); 651 mLayout.windowAnimations = 652 com.android.internal.R.style.Animation_Wallpaper; 653 mInputChannel = new InputChannel(); 654 if (mSession.addToDisplay(mWindow, mWindow.mSeq, mLayout, View.VISIBLE, 655 Display.DEFAULT_DISPLAY, mContentInsets, mStableInsets, mOutsets, 656 mInputChannel) < 0) { 657 Log.w(TAG, "Failed to add window while updating wallpaper surface."); 658 return; 659 } 660 mCreated = true; 661 662 mInputEventReceiver = new WallpaperInputEventReceiver( 663 mInputChannel, Looper.myLooper()); 664 } 665 666 mSurfaceHolder.mSurfaceLock.lock(); 667 mDrawingAllowed = true; 668 669 if (!fixedSize) { 670 mLayout.surfaceInsets.set(mIWallpaperEngine.mDisplayPadding); 671 mLayout.surfaceInsets.left += mOutsets.left; 672 mLayout.surfaceInsets.top += mOutsets.top; 673 mLayout.surfaceInsets.right += mOutsets.right; 674 mLayout.surfaceInsets.bottom += mOutsets.bottom; 675 } else { 676 mLayout.surfaceInsets.set(0, 0, 0, 0); 677 } 678 final int relayoutResult = mSession.relayout( 679 mWindow, mWindow.mSeq, mLayout, mWidth, mHeight, 680 View.VISIBLE, 0, mWinFrame, mOverscanInsets, mContentInsets, 681 mVisibleInsets, mStableInsets, mOutsets, mBackdropFrame, 682 mConfiguration, mSurfaceHolder.mSurface); 683 684 if (DEBUG) Log.v(TAG, "New surface: " + mSurfaceHolder.mSurface 685 + ", frame=" + mWinFrame); 686 687 int w = mWinFrame.width(); 688 int h = mWinFrame.height(); 689 690 if (!fixedSize) { 691 final Rect padding = mIWallpaperEngine.mDisplayPadding; 692 w += padding.left + padding.right + mOutsets.left + mOutsets.right; 693 h += padding.top + padding.bottom + mOutsets.top + mOutsets.bottom; 694 mOverscanInsets.left += padding.left; 695 mOverscanInsets.top += padding.top; 696 mOverscanInsets.right += padding.right; 697 mOverscanInsets.bottom += padding.bottom; 698 mContentInsets.left += padding.left; 699 mContentInsets.top += padding.top; 700 mContentInsets.right += padding.right; 701 mContentInsets.bottom += padding.bottom; 702 mStableInsets.left += padding.left; 703 mStableInsets.top += padding.top; 704 mStableInsets.right += padding.right; 705 mStableInsets.bottom += padding.bottom; 706 } 707 708 if (mCurWidth != w) { 709 sizeChanged = true; 710 mCurWidth = w; 711 } 712 if (mCurHeight != h) { 713 sizeChanged = true; 714 mCurHeight = h; 715 } 716 717 if (DEBUG) { 718 Log.v(TAG, "Wallpaper size has changed: (" + mCurWidth + ", " + mCurHeight); 719 } 720 721 insetsChanged |= !mDispatchedOverscanInsets.equals(mOverscanInsets); 722 insetsChanged |= !mDispatchedContentInsets.equals(mContentInsets); 723 insetsChanged |= !mDispatchedStableInsets.equals(mStableInsets); 724 insetsChanged |= !mDispatchedOutsets.equals(mOutsets); 725 726 mSurfaceHolder.setSurfaceFrameSize(w, h); 727 mSurfaceHolder.mSurfaceLock.unlock(); 728 729 if (!mSurfaceHolder.mSurface.isValid()) { 730 reportSurfaceDestroyed(); 731 if (DEBUG) Log.v(TAG, "Layout: Surface destroyed"); 732 return; 733 } 734 735 boolean didSurface = false; 736 737 try { 738 mSurfaceHolder.ungetCallbacks(); 739 740 if (surfaceCreating) { 741 mIsCreating = true; 742 didSurface = true; 743 if (DEBUG) Log.v(TAG, "onSurfaceCreated(" 744 + mSurfaceHolder + "): " + this); 745 onSurfaceCreated(mSurfaceHolder); 746 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 747 if (callbacks != null) { 748 for (SurfaceHolder.Callback c : callbacks) { 749 c.surfaceCreated(mSurfaceHolder); 750 } 751 } 752 } 753 754 redrawNeeded |= creating || (relayoutResult 755 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0; 756 757 if (forceReport || creating || surfaceCreating 758 || formatChanged || sizeChanged) { 759 if (DEBUG) { 760 RuntimeException e = new RuntimeException(); 761 e.fillInStackTrace(); 762 Log.w(TAG, "forceReport=" + forceReport + " creating=" + creating 763 + " formatChanged=" + formatChanged 764 + " sizeChanged=" + sizeChanged, e); 765 } 766 if (DEBUG) Log.v(TAG, "onSurfaceChanged(" 767 + mSurfaceHolder + ", " + mFormat 768 + ", " + mCurWidth + ", " + mCurHeight 769 + "): " + this); 770 didSurface = true; 771 onSurfaceChanged(mSurfaceHolder, mFormat, 772 mCurWidth, mCurHeight); 773 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 774 if (callbacks != null) { 775 for (SurfaceHolder.Callback c : callbacks) { 776 c.surfaceChanged(mSurfaceHolder, mFormat, 777 mCurWidth, mCurHeight); 778 } 779 } 780 } 781 782 if (insetsChanged) { 783 mDispatchedOverscanInsets.set(mOverscanInsets); 784 mDispatchedOverscanInsets.left += mOutsets.left; 785 mDispatchedOverscanInsets.top += mOutsets.top; 786 mDispatchedOverscanInsets.right += mOutsets.right; 787 mDispatchedOverscanInsets.bottom += mOutsets.bottom; 788 mDispatchedContentInsets.set(mContentInsets); 789 mDispatchedStableInsets.set(mStableInsets); 790 mDispatchedOutsets.set(mOutsets); 791 mFinalSystemInsets.set(mDispatchedOverscanInsets); 792 mFinalStableInsets.set(mDispatchedStableInsets); 793 WindowInsets insets = new WindowInsets(mFinalSystemInsets, 794 null, mFinalStableInsets, 795 getResources().getConfiguration().isScreenRound(), false); 796 if (DEBUG) { 797 Log.v(TAG, "dispatching insets=" + insets); 798 } 799 onApplyWindowInsets(insets); 800 } 801 802 if (redrawNeeded) { 803 onSurfaceRedrawNeeded(mSurfaceHolder); 804 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 805 if (callbacks != null) { 806 for (SurfaceHolder.Callback c : callbacks) { 807 if (c instanceof SurfaceHolder.Callback2) { 808 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 809 mSurfaceHolder); 810 } 811 } 812 } 813 } 814 815 if (didSurface && !mReportedVisible) { 816 // This wallpaper is currently invisible, but its 817 // surface has changed. At this point let's tell it 818 // again that it is invisible in case the report about 819 // the surface caused it to start running. We really 820 // don't want wallpapers running when not visible. 821 if (mIsCreating) { 822 // Some wallpapers will ignore this call if they 823 // had previously been told they were invisble, 824 // so if we are creating a new surface then toggle 825 // the state to get them to notice. 826 if (DEBUG) Log.v(TAG, "onVisibilityChanged(true) at surface: " 827 + this); 828 onVisibilityChanged(true); 829 } 830 if (DEBUG) Log.v(TAG, "onVisibilityChanged(false) at surface: " 831 + this); 832 onVisibilityChanged(false); 833 } 834 835 } finally { 836 mIsCreating = false; 837 mSurfaceCreated = true; 838 if (redrawNeeded) { 839 mSession.finishDrawing(mWindow); 840 } 841 mIWallpaperEngine.reportShown(); 842 } 843 } catch (RemoteException ex) { 844 } 845 if (DEBUG) Log.v( 846 TAG, "Layout: x=" + mLayout.x + " y=" + mLayout.y + 847 " w=" + mLayout.width + " h=" + mLayout.height); 848 } 849 } 850 851 void attach(IWallpaperEngineWrapper wrapper) { 852 if (DEBUG) Log.v(TAG, "attach: " + this + " wrapper=" + wrapper); 853 if (mDestroyed) { 854 return; 855 } 856 857 mIWallpaperEngine = wrapper; 858 mCaller = wrapper.mCaller; 859 mConnection = wrapper.mConnection; 860 mWindowToken = wrapper.mWindowToken; 861 mSurfaceHolder.setSizeFromLayout(); 862 mInitializing = true; 863 mSession = WindowManagerGlobal.getWindowSession(); 864 865 mWindow.setSession(mSession); 866 867 mLayout.packageName = getPackageName(); 868 869 mDisplayManager = (DisplayManager)getSystemService(Context.DISPLAY_SERVICE); 870 mDisplayManager.registerDisplayListener(mDisplayListener, mCaller.getHandler()); 871 mDisplay = mDisplayManager.getDisplay(Display.DEFAULT_DISPLAY); 872 mDisplayState = mDisplay.getState(); 873 874 if (DEBUG) Log.v(TAG, "onCreate(): " + this); 875 onCreate(mSurfaceHolder); 876 877 mInitializing = false; 878 mReportedVisible = false; 879 updateSurface(false, false, false); 880 } 881 882 void doDesiredSizeChanged(int desiredWidth, int desiredHeight) { 883 if (!mDestroyed) { 884 if (DEBUG) Log.v(TAG, "onDesiredSizeChanged(" 885 + desiredWidth + "," + desiredHeight + "): " + this); 886 mIWallpaperEngine.mReqWidth = desiredWidth; 887 mIWallpaperEngine.mReqHeight = desiredHeight; 888 onDesiredSizeChanged(desiredWidth, desiredHeight); 889 doOffsetsChanged(true); 890 } 891 } 892 893 void doDisplayPaddingChanged(Rect padding) { 894 if (!mDestroyed) { 895 if (DEBUG) Log.v(TAG, "onDisplayPaddingChanged(" + padding + "): " + this); 896 if (!mIWallpaperEngine.mDisplayPadding.equals(padding)) { 897 mIWallpaperEngine.mDisplayPadding.set(padding); 898 updateSurface(true, false, false); 899 } 900 } 901 } 902 903 void doVisibilityChanged(boolean visible) { 904 if (!mDestroyed) { 905 mVisible = visible; 906 reportVisibility(); 907 } 908 } 909 910 void reportVisibility() { 911 if (!mDestroyed) { 912 mDisplayState = mDisplay == null ? Display.STATE_UNKNOWN : mDisplay.getState(); 913 boolean visible = mVisible && mDisplayState != Display.STATE_OFF; 914 if (mReportedVisible != visible) { 915 mReportedVisible = visible; 916 if (DEBUG) Log.v(TAG, "onVisibilityChanged(" + visible 917 + "): " + this); 918 if (visible) { 919 // If becoming visible, in preview mode the surface 920 // may have been destroyed so now we need to make 921 // sure it is re-created. 922 doOffsetsChanged(false); 923 updateSurface(false, false, false); 924 } 925 onVisibilityChanged(visible); 926 } 927 } 928 } 929 930 void doOffsetsChanged(boolean always) { 931 if (mDestroyed) { 932 return; 933 } 934 935 if (!always && !mOffsetsChanged) { 936 return; 937 } 938 939 float xOffset; 940 float yOffset; 941 float xOffsetStep; 942 float yOffsetStep; 943 boolean sync; 944 synchronized (mLock) { 945 xOffset = mPendingXOffset; 946 yOffset = mPendingYOffset; 947 xOffsetStep = mPendingXOffsetStep; 948 yOffsetStep = mPendingYOffsetStep; 949 sync = mPendingSync; 950 mPendingSync = false; 951 mOffsetMessageEnqueued = false; 952 } 953 954 if (mSurfaceCreated) { 955 if (mReportedVisible) { 956 if (DEBUG) Log.v(TAG, "Offsets change in " + this 957 + ": " + xOffset + "," + yOffset); 958 final int availw = mIWallpaperEngine.mReqWidth-mCurWidth; 959 final int xPixels = availw > 0 ? -(int)(availw*xOffset+.5f) : 0; 960 final int availh = mIWallpaperEngine.mReqHeight-mCurHeight; 961 final int yPixels = availh > 0 ? -(int)(availh*yOffset+.5f) : 0; 962 onOffsetsChanged(xOffset, yOffset, xOffsetStep, yOffsetStep, xPixels, yPixels); 963 } else { 964 mOffsetsChanged = true; 965 } 966 } 967 968 if (sync) { 969 try { 970 if (DEBUG) Log.v(TAG, "Reporting offsets change complete"); 971 mSession.wallpaperOffsetsComplete(mWindow.asBinder()); 972 } catch (RemoteException e) { 973 } 974 } 975 } 976 977 void doCommand(WallpaperCommand cmd) { 978 Bundle result; 979 if (!mDestroyed) { 980 result = onCommand(cmd.action, cmd.x, cmd.y, cmd.z, 981 cmd.extras, cmd.sync); 982 } else { 983 result = null; 984 } 985 if (cmd.sync) { 986 try { 987 if (DEBUG) Log.v(TAG, "Reporting command complete"); 988 mSession.wallpaperCommandComplete(mWindow.asBinder(), result); 989 } catch (RemoteException e) { 990 } 991 } 992 } 993 994 void reportSurfaceDestroyed() { 995 if (mSurfaceCreated) { 996 mSurfaceCreated = false; 997 mSurfaceHolder.ungetCallbacks(); 998 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 999 if (callbacks != null) { 1000 for (SurfaceHolder.Callback c : callbacks) { 1001 c.surfaceDestroyed(mSurfaceHolder); 1002 } 1003 } 1004 if (DEBUG) Log.v(TAG, "onSurfaceDestroyed(" 1005 + mSurfaceHolder + "): " + this); 1006 onSurfaceDestroyed(mSurfaceHolder); 1007 } 1008 } 1009 1010 void detach() { 1011 if (mDestroyed) { 1012 return; 1013 } 1014 1015 mDestroyed = true; 1016 1017 if (mDisplayManager != null) { 1018 mDisplayManager.unregisterDisplayListener(mDisplayListener); 1019 } 1020 1021 if (mVisible) { 1022 mVisible = false; 1023 if (DEBUG) Log.v(TAG, "onVisibilityChanged(false): " + this); 1024 onVisibilityChanged(false); 1025 } 1026 1027 reportSurfaceDestroyed(); 1028 1029 if (DEBUG) Log.v(TAG, "onDestroy(): " + this); 1030 onDestroy(); 1031 1032 if (mCreated) { 1033 try { 1034 if (DEBUG) Log.v(TAG, "Removing window and destroying surface " 1035 + mSurfaceHolder.getSurface() + " of: " + this); 1036 1037 if (mInputEventReceiver != null) { 1038 mInputEventReceiver.dispose(); 1039 mInputEventReceiver = null; 1040 } 1041 1042 mSession.remove(mWindow); 1043 } catch (RemoteException e) { 1044 } 1045 mSurfaceHolder.mSurface.release(); 1046 mCreated = false; 1047 1048 // Dispose the input channel after removing the window so the Window Manager 1049 // doesn't interpret the input channel being closed as an abnormal termination. 1050 if (mInputChannel != null) { 1051 mInputChannel.dispose(); 1052 mInputChannel = null; 1053 } 1054 } 1055 } 1056 1057 private final DisplayListener mDisplayListener = new DisplayListener() { 1058 @Override 1059 public void onDisplayChanged(int displayId) { 1060 if (mDisplay.getDisplayId() == displayId) { 1061 reportVisibility(); 1062 } 1063 } 1064 1065 @Override 1066 public void onDisplayRemoved(int displayId) { 1067 } 1068 1069 @Override 1070 public void onDisplayAdded(int displayId) { 1071 } 1072 }; 1073 } 1074 1075 class IWallpaperEngineWrapper extends IWallpaperEngine.Stub 1076 implements HandlerCaller.Callback { 1077 private final HandlerCaller mCaller; 1078 1079 final IWallpaperConnection mConnection; 1080 final IBinder mWindowToken; 1081 final int mWindowType; 1082 final boolean mIsPreview; 1083 boolean mShownReported; 1084 int mReqWidth; 1085 int mReqHeight; 1086 final Rect mDisplayPadding = new Rect(); 1087 1088 Engine mEngine; 1089 1090 IWallpaperEngineWrapper(WallpaperService context, 1091 IWallpaperConnection conn, IBinder windowToken, 1092 int windowType, boolean isPreview, int reqWidth, int reqHeight, Rect padding) { 1093 mCaller = new HandlerCaller(context, context.getMainLooper(), this, true); 1094 mConnection = conn; 1095 mWindowToken = windowToken; 1096 mWindowType = windowType; 1097 mIsPreview = isPreview; 1098 mReqWidth = reqWidth; 1099 mReqHeight = reqHeight; 1100 mDisplayPadding.set(padding); 1101 1102 Message msg = mCaller.obtainMessage(DO_ATTACH); 1103 mCaller.sendMessage(msg); 1104 } 1105 1106 public void setDesiredSize(int width, int height) { 1107 Message msg = mCaller.obtainMessageII(DO_SET_DESIRED_SIZE, width, height); 1108 mCaller.sendMessage(msg); 1109 } 1110 1111 public void setDisplayPadding(Rect padding) { 1112 Message msg = mCaller.obtainMessageO(DO_SET_DISPLAY_PADDING, padding); 1113 mCaller.sendMessage(msg); 1114 } 1115 1116 public void setVisibility(boolean visible) { 1117 Message msg = mCaller.obtainMessageI(MSG_VISIBILITY_CHANGED, 1118 visible ? 1 : 0); 1119 mCaller.sendMessage(msg); 1120 } 1121 1122 public void dispatchPointer(MotionEvent event) { 1123 if (mEngine != null) { 1124 mEngine.dispatchPointer(event); 1125 } else { 1126 event.recycle(); 1127 } 1128 } 1129 1130 public void dispatchWallpaperCommand(String action, int x, int y, 1131 int z, Bundle extras) { 1132 if (mEngine != null) { 1133 mEngine.mWindow.dispatchWallpaperCommand(action, x, y, z, extras, false); 1134 } 1135 } 1136 1137 public void reportShown() { 1138 if (!mShownReported) { 1139 mShownReported = true; 1140 try { 1141 mConnection.engineShown(this); 1142 } catch (RemoteException e) { 1143 Log.w(TAG, "Wallpaper host disappeared", e); 1144 return; 1145 } 1146 } 1147 } 1148 1149 public void destroy() { 1150 Message msg = mCaller.obtainMessage(DO_DETACH); 1151 mCaller.sendMessage(msg); 1152 } 1153 1154 public void executeMessage(Message message) { 1155 switch (message.what) { 1156 case DO_ATTACH: { 1157 try { 1158 mConnection.attachEngine(this); 1159 } catch (RemoteException e) { 1160 Log.w(TAG, "Wallpaper host disappeared", e); 1161 return; 1162 } 1163 Engine engine = onCreateEngine(); 1164 mEngine = engine; 1165 mActiveEngines.add(engine); 1166 engine.attach(this); 1167 return; 1168 } 1169 case DO_DETACH: { 1170 mActiveEngines.remove(mEngine); 1171 mEngine.detach(); 1172 return; 1173 } 1174 case DO_SET_DESIRED_SIZE: { 1175 mEngine.doDesiredSizeChanged(message.arg1, message.arg2); 1176 return; 1177 } 1178 case DO_SET_DISPLAY_PADDING: { 1179 mEngine.doDisplayPaddingChanged((Rect) message.obj); 1180 } 1181 case MSG_UPDATE_SURFACE: 1182 mEngine.updateSurface(true, false, false); 1183 break; 1184 case MSG_VISIBILITY_CHANGED: 1185 if (DEBUG) Log.v(TAG, "Visibility change in " + mEngine 1186 + ": " + message.arg1); 1187 mEngine.doVisibilityChanged(message.arg1 != 0); 1188 break; 1189 case MSG_WALLPAPER_OFFSETS: { 1190 mEngine.doOffsetsChanged(true); 1191 } break; 1192 case MSG_WALLPAPER_COMMAND: { 1193 WallpaperCommand cmd = (WallpaperCommand)message.obj; 1194 mEngine.doCommand(cmd); 1195 } break; 1196 case MSG_WINDOW_RESIZED: { 1197 final boolean reportDraw = message.arg1 != 0; 1198 mEngine.mOutsets.set((Rect) message.obj); 1199 mEngine.updateSurface(true, false, reportDraw); 1200 mEngine.doOffsetsChanged(true); 1201 } break; 1202 case MSG_WINDOW_MOVED: { 1203 // Do nothing. What does it mean for a Wallpaper to move? 1204 } break; 1205 case MSG_TOUCH_EVENT: { 1206 boolean skip = false; 1207 MotionEvent ev = (MotionEvent)message.obj; 1208 if (ev.getAction() == MotionEvent.ACTION_MOVE) { 1209 synchronized (mEngine.mLock) { 1210 if (mEngine.mPendingMove == ev) { 1211 mEngine.mPendingMove = null; 1212 } else { 1213 // this is not the motion event we are looking for.... 1214 skip = true; 1215 } 1216 } 1217 } 1218 if (!skip) { 1219 if (DEBUG) Log.v(TAG, "Delivering touch event: " + ev); 1220 mEngine.onTouchEvent(ev); 1221 } 1222 ev.recycle(); 1223 } break; 1224 default : 1225 Log.w(TAG, "Unknown message type " + message.what); 1226 } 1227 } 1228 } 1229 1230 /** 1231 * Implements the internal {@link IWallpaperService} interface to convert 1232 * incoming calls to it back to calls on an {@link WallpaperService}. 1233 */ 1234 class IWallpaperServiceWrapper extends IWallpaperService.Stub { 1235 private final WallpaperService mTarget; 1236 1237 public IWallpaperServiceWrapper(WallpaperService context) { 1238 mTarget = context; 1239 } 1240 1241 @Override 1242 public void attach(IWallpaperConnection conn, IBinder windowToken, 1243 int windowType, boolean isPreview, int reqWidth, int reqHeight, Rect padding) { 1244 new IWallpaperEngineWrapper(mTarget, conn, windowToken, 1245 windowType, isPreview, reqWidth, reqHeight, padding); 1246 } 1247 } 1248 1249 @Override 1250 public void onCreate() { 1251 super.onCreate(); 1252 } 1253 1254 @Override 1255 public void onDestroy() { 1256 super.onDestroy(); 1257 for (int i=0; i<mActiveEngines.size(); i++) { 1258 mActiveEngines.get(i).detach(); 1259 } 1260 mActiveEngines.clear(); 1261 } 1262 1263 /** 1264 * Implement to return the implementation of the internal accessibility 1265 * service interface. Subclasses should not override. 1266 */ 1267 @Override 1268 public final IBinder onBind(Intent intent) { 1269 return new IWallpaperServiceWrapper(this); 1270 } 1271 1272 /** 1273 * Must be implemented to return a new instance of the wallpaper's engine. 1274 * Note that multiple instances may be active at the same time, such as 1275 * when the wallpaper is currently set as the active wallpaper and the user 1276 * is in the wallpaper picker viewing a preview of it as well. 1277 */ 1278 public abstract Engine onCreateEngine(); 1279 1280 @Override 1281 protected void dump(FileDescriptor fd, PrintWriter out, String[] args) { 1282 out.print("State of wallpaper "); out.print(this); out.println(":"); 1283 for (int i=0; i<mActiveEngines.size(); i++) { 1284 Engine engine = mActiveEngines.get(i); 1285 out.print(" Engine "); out.print(engine); out.println(":"); 1286 engine.dump(" ", fd, out, args); 1287 } 1288 } 1289 } 1290
