1 /* 2 * Copyright (C) 2010 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.view; 18 19 import android.compat.annotation.UnsupportedAppUsage; 20 import android.content.ClipData; 21 import android.content.ClipDescription; 22 import android.os.Build; 23 import android.os.Parcel; 24 import android.os.Parcelable; 25 26 import com.android.internal.view.IDragAndDropPermissions; 27 28 //TODO: Improve Javadoc 29 /** 30 * Represents an event that is sent out by the system at various times during a drag and drop 31 * operation. It is a data structure that contains several important pieces of data about 32 * the operation and the underlying data. 33 * <p> 34 * View objects that receive a DragEvent call {@link #getAction()}, which returns 35 * an action type that indicates the state of the drag and drop operation. This allows a View 36 * object to react to a change in state by changing its appearance or performing other actions. 37 * For example, a View can react to the {@link #ACTION_DRAG_ENTERED} action type by 38 * by changing one or more colors in its displayed image. 39 * </p> 40 * <p> 41 * During a drag and drop operation, the system displays an image that the user drags. This image 42 * is called a drag shadow. Several action types reflect the position of the drag shadow relative 43 * to the View receiving the event. 44 * </p> 45 * <p> 46 * Most methods return valid data only for certain event actions. This is summarized in the 47 * following table. Each possible {@link #getAction()} value is listed in the first column. The 48 * other columns indicate which method or methods return valid data for that getAction() value: 49 * </p> 50 * <table> 51 * <tr> 52 * <th scope="col">getAction() Value</th> 53 * <th scope="col">getClipDescription()</th> 54 * <th scope="col">getLocalState()</th> 55 * <th scope="col">getX()</th> 56 * <th scope="col">getY()</th> 57 * <th scope="col">getClipData()</th> 58 * <th scope="col">getResult()</th> 59 * </tr> 60 * <tr> 61 * <td>ACTION_DRAG_STARTED</td> 62 * <td style="text-align: center;">X</td> 63 * <td style="text-align: center;">X</td> 64 * <td style="text-align: center;">X</td> 65 * <td style="text-align: center;">X</td> 66 * <td style="text-align: center;"> </td> 67 * <td style="text-align: center;"> </td> 68 * </tr> 69 * <tr> 70 * <td>ACTION_DRAG_ENTERED</td> 71 * <td style="text-align: center;">X</td> 72 * <td style="text-align: center;">X</td> 73 * <td style="text-align: center;"> </td> 74 * <td style="text-align: center;"> </td> 75 * <td style="text-align: center;"> </td> 76 * <td style="text-align: center;"> </td> 77 * </tr> 78 * <tr> 79 * <td>ACTION_DRAG_LOCATION</td> 80 * <td style="text-align: center;">X</td> 81 * <td style="text-align: center;">X</td> 82 * <td style="text-align: center;">X</td> 83 * <td style="text-align: center;">X</td> 84 * <td style="text-align: center;"> </td> 85 * <td style="text-align: center;"> </td> 86 * </tr> 87 * <tr> 88 * <td>ACTION_DRAG_EXITED</td> 89 * <td style="text-align: center;">X</td> 90 * <td style="text-align: center;">X</td> 91 * <td style="text-align: center;"> </td> 92 * <td style="text-align: center;"> </td> 93 * <td style="text-align: center;"> </td> 94 * <td style="text-align: center;"> </td> 95 * </tr> 96 * <tr> 97 * <td>ACTION_DROP</td> 98 * <td style="text-align: center;">X</td> 99 * <td style="text-align: center;">X</td> 100 * <td style="text-align: center;">X</td> 101 * <td style="text-align: center;">X</td> 102 * <td style="text-align: center;">X</td> 103 * <td style="text-align: center;"> </td> 104 * </tr> 105 * <tr> 106 * <td>ACTION_DRAG_ENDED</td> 107 * <td style="text-align: center;"> </td> 108 * <td style="text-align: center;">X</td> 109 * <td style="text-align: center;"> </td> 110 * <td style="text-align: center;"> </td> 111 * <td style="text-align: center;"> </td> 112 * <td style="text-align: center;">X</td> 113 * </tr> 114 * </table> 115 * <p> 116 * The {@link android.view.DragEvent#getAction()}, 117 * {@link android.view.DragEvent#getLocalState()} 118 * {@link android.view.DragEvent#describeContents()}, 119 * {@link android.view.DragEvent#writeToParcel(Parcel,int)}, and 120 * {@link android.view.DragEvent#toString()} methods always return valid data. 121 * </p> 122 * 123 * <div class="special reference"> 124 * <h3>Developer Guides</h3> 125 * <p>For a guide to implementing drag and drop features, read the 126 * <a href="{@docRoot}guide/topics/ui/drag-drop.html">Drag and Drop</a> developer guide.</p> 127 * </div> 128 */ 129 public class DragEvent implements Parcelable { 130 private static final boolean TRACK_RECYCLED_LOCATION = false; 131 132 int mAction; 133 float mX, mY; 134 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) 135 ClipDescription mClipDescription; 136 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) 137 ClipData mClipData; 138 IDragAndDropPermissions mDragAndDropPermissions; 139 140 Object mLocalState; 141 boolean mDragResult; 142 boolean mEventHandlerWasCalled; 143 144 /** 145 * The drag surface containing the object being dragged. Only provided if the target window 146 * has the {@link WindowManager.LayoutParams#PRIVATE_FLAG_INTERCEPT_GLOBAL_DRAG_AND_DROP} flag 147 * and is only sent with {@link #ACTION_DROP}. 148 */ 149 private SurfaceControl mDragSurface; 150 151 /** 152 * The offsets from the touch that the surface is adjusted by as the surface is moved around the 153 * screen. Necessary for the target using the drag surface to animate it properly once it takes 154 * ownership of the drag surface after the drop. 155 */ 156 private float mOffsetX; 157 private float mOffsetY; 158 159 private DragEvent mNext; 160 private RuntimeException mRecycledLocation; 161 private boolean mRecycled; 162 163 private static final int MAX_RECYCLED = 10; 164 private static final Object gRecyclerLock = new Object(); 165 private static int gRecyclerUsed = 0; 166 private static DragEvent gRecyclerTop = null; 167 168 /** 169 * Action constant returned by {@link #getAction()}: Signals the start of a 170 * drag and drop operation. The View should return {@code true} from its 171 * {@link View#onDragEvent(DragEvent) onDragEvent()} handler method or 172 * {@link View.OnDragListener#onDrag(View,DragEvent) OnDragListener.onDrag()} listener 173 * if it can accept a drop. The onDragEvent() or onDrag() methods usually inspect the metadata 174 * from {@link #getClipDescription()} to determine if they can accept the data contained in 175 * this drag. For an operation that doesn't represent data transfer, these methods may 176 * perform other actions to determine whether or not the View should accept the data. 177 * If the View wants to indicate that it is a valid drop target, it can also react by 178 * changing its appearance. 179 * <p> 180 * Views added or becoming visible for the first time during a drag operation receive this 181 * event when they are added or becoming visible. 182 * </p> 183 * <p> 184 * A View only receives further drag events for the drag operation if it returns {@code true} 185 * in response to ACTION_DRAG_STARTED. 186 * </p> 187 * @see #ACTION_DRAG_ENDED 188 * @see #getX() 189 * @see #getY() 190 */ 191 public static final int ACTION_DRAG_STARTED = 1; 192 193 /** 194 * Action constant returned by {@link #getAction()}: Sent to a View after 195 * {@link #ACTION_DRAG_ENTERED} while the drag shadow is still within the View object's bounding 196 * box, but not within a descendant view that can accept the data. The {@link #getX()} and 197 * {@link #getY()} methods supply 198 * the X and Y position of of the drag point within the View object's bounding box. 199 * <p> 200 * A View receives an {@link #ACTION_DRAG_ENTERED} event before receiving any 201 * ACTION_DRAG_LOCATION events. 202 * </p> 203 * <p> 204 * The system stops sending ACTION_DRAG_LOCATION events to a View once the user moves the 205 * drag shadow out of the View object's bounding box or into a descendant view that can accept 206 * the data. If the user moves the drag shadow back into the View object's bounding box or out 207 * of a descendant view that can accept the data, the View receives an ACTION_DRAG_ENTERED again 208 * before receiving any more ACTION_DRAG_LOCATION events. 209 * </p> 210 * @see #ACTION_DRAG_ENTERED 211 * @see #getX() 212 * @see #getY() 213 */ 214 public static final int ACTION_DRAG_LOCATION = 2; 215 216 /** 217 * Action constant returned by {@link #getAction()}: Signals to a View that the user 218 * has released the drag shadow, and the drag point is within the bounding box of the View and 219 * not within a descendant view that can accept the data. 220 * The View should retrieve the data from the DragEvent by calling {@link #getClipData()}. 221 * The methods {@link #getX()} and {@link #getY()} return the X and Y position of the drop point 222 * within the View object's bounding box. 223 * <p> 224 * The View should return {@code true} from its {@link View#onDragEvent(DragEvent)} 225 * handler or {@link View.OnDragListener#onDrag(View,DragEvent) OnDragListener.onDrag()} 226 * listener if it accepted the drop, and {@code false} if it ignored the drop. 227 * </p> 228 * <p> 229 * The View can also react to this action by changing its appearance. 230 * </p> 231 * @see #getClipData() 232 * @see #getX() 233 * @see #getY() 234 */ 235 public static final int ACTION_DROP = 3; 236 237 /** 238 * Action constant returned by {@link #getAction()}: Signals to a View that the drag and drop 239 * operation has concluded. A View that changed its appearance during the operation should 240 * return to its usual drawing state in response to this event. 241 * <p> 242 * All views with listeners that returned boolean <code>true</code> for the ACTION_DRAG_STARTED 243 * event will receive the ACTION_DRAG_ENDED event even if they are not currently visible when 244 * the drag ends. Views removed during the drag operation won't receive the ACTION_DRAG_ENDED 245 * event. 246 * </p> 247 * <p> 248 * The View object can call {@link #getResult()} to see the result of the operation. 249 * If a View returned {@code true} in response to {@link #ACTION_DROP}, then 250 * getResult() returns {@code true}, otherwise it returns {@code false}. 251 * </p> 252 * @see #ACTION_DRAG_STARTED 253 * @see #getResult() 254 */ 255 public static final int ACTION_DRAG_ENDED = 4; 256 257 /** 258 * Action constant returned by {@link #getAction()}: Signals to a View that the drag point has 259 * entered the bounding box of the View. 260 * <p> 261 * If the View can accept a drop, it can react to ACTION_DRAG_ENTERED 262 * by changing its appearance in a way that tells the user that the View is the current 263 * drop target. 264 * </p> 265 * The system stops sending ACTION_DRAG_LOCATION events to a View once the user moves the 266 * drag shadow out of the View object's bounding box or into a descendant view that can accept 267 * the data. If the user moves the drag shadow back into the View object's bounding box or out 268 * of a descendant view that can accept the data, the View receives an ACTION_DRAG_ENTERED again 269 * before receiving any more ACTION_DRAG_LOCATION events. 270 * </p> 271 * @see #ACTION_DRAG_ENTERED 272 * @see #ACTION_DRAG_LOCATION 273 */ 274 public static final int ACTION_DRAG_ENTERED = 5; 275 276 /** 277 * Action constant returned by {@link #getAction()}: Signals that the user has moved the 278 * drag shadow out of the bounding box of the View or into a descendant view that can accept 279 * the data. 280 * The View can react by changing its appearance in a way that tells the user that 281 * View is no longer the immediate drop target. 282 * <p> 283 * After the system sends an ACTION_DRAG_EXITED event to the View, the View receives no more 284 * ACTION_DRAG_LOCATION events until the user drags the drag shadow back over the View. 285 * </p> 286 * 287 */ 288 public static final int ACTION_DRAG_EXITED = 6; 289 DragEvent()290 private DragEvent() { 291 } 292 init(int action, float x, float y, float offsetX, float offsetY, ClipDescription description, ClipData data, SurfaceControl dragSurface, IDragAndDropPermissions dragAndDropPermissions, Object localState, boolean result)293 private void init(int action, float x, float y, float offsetX, float offsetY, 294 ClipDescription description, ClipData data, SurfaceControl dragSurface, 295 IDragAndDropPermissions dragAndDropPermissions, Object localState, boolean result) { 296 mAction = action; 297 mX = x; 298 mY = y; 299 mOffsetX = offsetX; 300 mOffsetY = offsetY; 301 mClipDescription = description; 302 mClipData = data; 303 mDragSurface = dragSurface; 304 mDragAndDropPermissions = dragAndDropPermissions; 305 mLocalState = localState; 306 mDragResult = result; 307 } 308 obtain()309 static DragEvent obtain() { 310 return DragEvent.obtain(0, 0f, 0f, 0f, 0f, null, null, null, null, null, false); 311 } 312 313 /** @hide */ obtain(int action, float x, float y, float offsetX, float offsetY, Object localState, ClipDescription description, ClipData data, SurfaceControl dragSurface, IDragAndDropPermissions dragAndDropPermissions, boolean result)314 public static DragEvent obtain(int action, float x, float y, float offsetX, float offsetY, 315 Object localState, ClipDescription description, ClipData data, 316 SurfaceControl dragSurface, IDragAndDropPermissions dragAndDropPermissions, 317 boolean result) { 318 final DragEvent ev; 319 synchronized (gRecyclerLock) { 320 if (gRecyclerTop == null) { 321 ev = new DragEvent(); 322 ev.init(action, x, y, offsetX, offsetY, description, data, dragSurface, 323 dragAndDropPermissions, localState, result); 324 return ev; 325 } 326 ev = gRecyclerTop; 327 gRecyclerTop = ev.mNext; 328 gRecyclerUsed -= 1; 329 } 330 ev.mRecycledLocation = null; 331 ev.mRecycled = false; 332 ev.mNext = null; 333 334 ev.init(action, x, y, offsetX, offsetY, description, data, dragSurface, 335 dragAndDropPermissions, localState, result); 336 337 return ev; 338 } 339 340 /** @hide */ 341 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) obtain(DragEvent source)342 public static DragEvent obtain(DragEvent source) { 343 return obtain(source.mAction, source.mX, source.mY, source.mOffsetX, source.mOffsetY, 344 source.mLocalState, source.mClipDescription, source.mClipData, source.mDragSurface, 345 source.mDragAndDropPermissions, source.mDragResult); 346 } 347 348 /** 349 * Inspect the action value of this event. 350 * @return One of the following action constants, in the order in which they usually occur 351 * during a drag and drop operation: 352 * <ul> 353 * <li>{@link #ACTION_DRAG_STARTED}</li> 354 * <li>{@link #ACTION_DRAG_ENTERED}</li> 355 * <li>{@link #ACTION_DRAG_LOCATION}</li> 356 * <li>{@link #ACTION_DROP}</li> 357 * <li>{@link #ACTION_DRAG_EXITED}</li> 358 * <li>{@link #ACTION_DRAG_ENDED}</li> 359 * </ul> 360 */ getAction()361 public int getAction() { 362 return mAction; 363 } 364 365 /** 366 * Gets the X coordinate of the drag point. The value is only valid if the event action is 367 * {@link #ACTION_DRAG_STARTED}, {@link #ACTION_DRAG_LOCATION} or {@link #ACTION_DROP}. 368 * @return The current drag point's X coordinate 369 */ getX()370 public float getX() { 371 return mX; 372 } 373 374 /** 375 * Gets the Y coordinate of the drag point. The value is only valid if the event action is 376 * {@link #ACTION_DRAG_STARTED}, {@link #ACTION_DRAG_LOCATION} or {@link #ACTION_DROP}. 377 * @return The current drag point's Y coordinate 378 */ getY()379 public float getY() { 380 return mY; 381 } 382 383 /** @hide */ getOffsetX()384 public float getOffsetX() { 385 return mOffsetX; 386 } 387 388 /** @hide */ getOffsetY()389 public float getOffsetY() { 390 return mOffsetY; 391 } 392 393 /** 394 * Returns the {@link android.content.ClipData} object sent to the system as part of the call 395 * to 396 * {@link android.view.View#startDragAndDrop(ClipData,View.DragShadowBuilder,Object,int) 397 * startDragAndDrop()}. 398 * This method only returns valid data if the event action is {@link #ACTION_DROP}. 399 * @return The ClipData sent to the system by startDragAndDrop(). 400 */ getClipData()401 public ClipData getClipData() { 402 return mClipData; 403 } 404 405 /** 406 * Returns the {@link android.content.ClipDescription} object contained in the 407 * {@link android.content.ClipData} object sent to the system as part of the call to 408 * {@link android.view.View#startDragAndDrop(ClipData,View.DragShadowBuilder,Object,int) 409 * startDragAndDrop()}. 410 * The drag handler or listener for a View can use the metadata in this object to decide if the 411 * View can accept the dragged View object's data. 412 * <p> 413 * This method returns valid data for all event actions except for {@link #ACTION_DRAG_ENDED}. 414 * @return The ClipDescription that was part of the ClipData sent to the system by 415 * startDragAndDrop(). 416 */ getClipDescription()417 public ClipDescription getClipDescription() { 418 return mClipDescription; 419 } 420 421 /** @hide */ getDragSurface()422 public SurfaceControl getDragSurface() { 423 return mDragSurface; 424 } 425 426 /** @hide */ getDragAndDropPermissions()427 public IDragAndDropPermissions getDragAndDropPermissions() { 428 return mDragAndDropPermissions; 429 } 430 431 /** 432 * Returns the local state object sent to the system as part of the call to 433 * {@link android.view.View#startDragAndDrop(ClipData,View.DragShadowBuilder,Object,int) 434 * startDragAndDrop()}. 435 * The object is intended to provide local information about the drag and drop operation. For 436 * example, it can indicate whether the drag and drop operation is a copy or a move. 437 * <p> 438 * The local state is available only to views in the activity which has started the drag 439 * operation. In all other activities this method will return null 440 * </p> 441 * <p> 442 * This method returns valid data for all event actions. 443 * </p> 444 * @return The local state object sent to the system by startDragAndDrop(). 445 */ getLocalState()446 public Object getLocalState() { 447 return mLocalState; 448 } 449 450 /** 451 * <p> 452 * Returns an indication of the result of the drag and drop operation. 453 * This method only returns valid data if the action type is {@link #ACTION_DRAG_ENDED}. 454 * The return value depends on what happens after the user releases the drag shadow. 455 * </p> 456 * <p> 457 * If the user releases the drag shadow on a View that can accept a drop, the system sends an 458 * {@link #ACTION_DROP} event to the View object's drag event listener. If the listener 459 * returns {@code true}, then getResult() will return {@code true}. 460 * If the listener returns {@code false}, then getResult() returns {@code false}. 461 * </p> 462 * <p> 463 * Notice that getResult() also returns {@code false} if no {@link #ACTION_DROP} is sent. This 464 * happens, for example, when the user releases the drag shadow over an area outside of the 465 * application. In this case, the system sends out {@link #ACTION_DRAG_ENDED} for the current 466 * operation, but never sends out {@link #ACTION_DROP}. 467 * </p> 468 * @return {@code true} if a drag event listener returned {@code true} in response to 469 * {@link #ACTION_DROP}. If the system did not send {@link #ACTION_DROP} before 470 * {@link #ACTION_DRAG_ENDED}, or if the listener returned {@code false} in response to 471 * {@link #ACTION_DROP}, then {@code false} is returned. 472 */ getResult()473 public boolean getResult() { 474 return mDragResult; 475 } 476 477 /** 478 * Recycle the DragEvent, to be re-used by a later caller. After calling 479 * this function you must never touch the event again. 480 * 481 * @hide 482 */ recycle()483 public final void recycle() { 484 // Ensure recycle is only called once! 485 if (TRACK_RECYCLED_LOCATION) { 486 if (mRecycledLocation != null) { 487 throw new RuntimeException(toString() + " recycled twice!", mRecycledLocation); 488 } 489 mRecycledLocation = new RuntimeException("Last recycled here"); 490 } else { 491 if (mRecycled) { 492 throw new RuntimeException(toString() + " recycled twice!"); 493 } 494 mRecycled = true; 495 } 496 497 mClipData = null; 498 mClipDescription = null; 499 mLocalState = null; 500 mEventHandlerWasCalled = false; 501 502 synchronized (gRecyclerLock) { 503 if (gRecyclerUsed < MAX_RECYCLED) { 504 gRecyclerUsed++; 505 mNext = gRecyclerTop; 506 gRecyclerTop = this; 507 } 508 } 509 } 510 511 /** 512 * Returns a string that represents the symbolic name of the specified unmasked action 513 * such as "ACTION_DRAG_START", "ACTION_DRAG_END" or an equivalent numeric constant 514 * such as "35" if unknown. 515 * 516 * @param action The action. 517 * @return The symbolic name of the specified action. 518 * @see #getAction() 519 * @hide 520 */ actionToString(int action)521 public static String actionToString(int action) { 522 switch (action) { 523 case ACTION_DRAG_STARTED: 524 return "ACTION_DRAG_STARTED"; 525 case ACTION_DRAG_LOCATION: 526 return "ACTION_DRAG_LOCATION"; 527 case ACTION_DROP: 528 return "ACTION_DROP"; 529 case ACTION_DRAG_ENDED: 530 return "ACTION_DRAG_ENDED"; 531 case ACTION_DRAG_ENTERED: 532 return "ACTION_DRAG_ENTERED"; 533 case ACTION_DRAG_EXITED: 534 return "ACTION_DRAG_EXITED"; 535 } 536 return Integer.toString(action); 537 } 538 539 /** 540 * Returns a string containing a concise, human-readable representation of this DragEvent 541 * object. 542 * @return A string representation of the DragEvent object. 543 */ 544 @Override toString()545 public String toString() { 546 return "DragEvent{" + Integer.toHexString(System.identityHashCode(this)) 547 + " action=" + mAction + " @ (" + mX + ", " + mY + ") desc=" + mClipDescription 548 + " data=" + mClipData + " local=" + mLocalState + " result=" + mDragResult 549 + "}"; 550 } 551 552 /* Parcelable interface */ 553 554 /** 555 * Returns information about the {@link android.os.Parcel} representation of this DragEvent 556 * object. 557 * @return Information about the {@link android.os.Parcel} representation. 558 */ describeContents()559 public int describeContents() { 560 return 0; 561 } 562 563 /** 564 * Creates a {@link android.os.Parcel} object from this DragEvent object. 565 * @param dest A {@link android.os.Parcel} object in which to put the DragEvent object. 566 * @param flags Flags to store in the Parcel. 567 */ writeToParcel(Parcel dest, int flags)568 public void writeToParcel(Parcel dest, int flags) { 569 dest.writeInt(mAction); 570 dest.writeFloat(mX); 571 dest.writeFloat(mY); 572 dest.writeFloat(mOffsetX); 573 dest.writeFloat(mOffsetY); 574 dest.writeInt(mDragResult ? 1 : 0); 575 if (mClipData == null) { 576 dest.writeInt(0); 577 } else { 578 dest.writeInt(1); 579 mClipData.writeToParcel(dest, flags); 580 } 581 if (mClipDescription == null) { 582 dest.writeInt(0); 583 } else { 584 dest.writeInt(1); 585 mClipDescription.writeToParcel(dest, flags); 586 } 587 if (mDragSurface == null) { 588 dest.writeInt(0); 589 } else { 590 dest.writeInt(1); 591 mDragSurface.writeToParcel(dest, flags); 592 } 593 if (mDragAndDropPermissions == null) { 594 dest.writeInt(0); 595 } else { 596 dest.writeInt(1); 597 dest.writeStrongBinder(mDragAndDropPermissions.asBinder()); 598 } 599 } 600 601 /** 602 * A container for creating a DragEvent from a Parcel. 603 */ 604 public static final @android.annotation.NonNull Parcelable.Creator<DragEvent> CREATOR = 605 new Parcelable.Creator<DragEvent>() { 606 public DragEvent createFromParcel(Parcel in) { 607 DragEvent event = DragEvent.obtain(); 608 event.mAction = in.readInt(); 609 event.mX = in.readFloat(); 610 event.mY = in.readFloat(); 611 event.mOffsetX = in.readFloat(); 612 event.mOffsetY = in.readFloat(); 613 event.mDragResult = (in.readInt() != 0); 614 if (in.readInt() != 0) { 615 event.mClipData = ClipData.CREATOR.createFromParcel(in); 616 } 617 if (in.readInt() != 0) { 618 event.mClipDescription = ClipDescription.CREATOR.createFromParcel(in); 619 } 620 if (in.readInt() != 0) { 621 event.mDragSurface = SurfaceControl.CREATOR.createFromParcel(in); 622 } 623 if (in.readInt() != 0) { 624 event.mDragAndDropPermissions = 625 IDragAndDropPermissions.Stub.asInterface(in.readStrongBinder());; 626 } 627 return event; 628 } 629 630 public DragEvent[] newArray(int size) { 631 return new DragEvent[size]; 632 } 633 }; 634 } 635