1 /* 2 * Copyright (C) 2011 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.annotation.NonNull; 20 import android.annotation.Nullable; 21 import android.annotation.XmlRes; 22 import android.compat.annotation.UnsupportedAppUsage; 23 import android.content.Context; 24 import android.content.res.Resources; 25 import android.content.res.TypedArray; 26 import android.content.res.XmlResourceParser; 27 import android.graphics.Bitmap; 28 import android.graphics.Canvas; 29 import android.graphics.Paint; 30 import android.graphics.Rect; 31 import android.graphics.RectF; 32 import android.graphics.drawable.AnimationDrawable; 33 import android.graphics.drawable.BitmapDrawable; 34 import android.graphics.drawable.Drawable; 35 import android.hardware.display.DisplayManager; 36 import android.os.Build; 37 import android.os.Parcel; 38 import android.os.Parcelable; 39 import android.util.Log; 40 import android.util.SparseArray; 41 42 import com.android.internal.util.XmlUtils; 43 44 /** 45 * Represents an icon that can be used as a mouse pointer. 46 * <p> 47 * Pointer icons can be provided either by the system using system types, 48 * or by applications using bitmaps or application resources. 49 * </p> 50 */ 51 public final class PointerIcon implements Parcelable { 52 private static final String TAG = "PointerIcon"; 53 54 /** {@hide} Type constant: Custom icon with a user-supplied bitmap. */ 55 public static final int TYPE_CUSTOM = -1; 56 57 /** Type constant: Null icon. It has no bitmap. */ 58 public static final int TYPE_NULL = 0; 59 60 /** 61 * Type constant: no icons are specified. If all views uses this, then the pointer icon falls 62 * back to the default type, but this is helpful to distinguish a view that explicitly wants 63 * to have the default icon. 64 * @hide 65 */ 66 public static final int TYPE_NOT_SPECIFIED = 1; 67 68 /** Type constant: Arrow icon. (Default mouse pointer) */ 69 public static final int TYPE_ARROW = 1000; 70 71 /** {@hide} Type constant: Spot hover icon for touchpads. */ 72 public static final int TYPE_SPOT_HOVER = 2000; 73 74 /** {@hide} Type constant: Spot touch icon for touchpads. */ 75 public static final int TYPE_SPOT_TOUCH = 2001; 76 77 /** {@hide} Type constant: Spot anchor icon for touchpads. */ 78 public static final int TYPE_SPOT_ANCHOR = 2002; 79 80 // Type constants for additional predefined icons for mice. 81 /** Type constant: context-menu. */ 82 public static final int TYPE_CONTEXT_MENU = 1001; 83 84 /** Type constant: hand. */ 85 public static final int TYPE_HAND = 1002; 86 87 /** Type constant: help. */ 88 public static final int TYPE_HELP = 1003; 89 90 /** Type constant: wait. */ 91 public static final int TYPE_WAIT = 1004; 92 93 /** Type constant: cell. */ 94 public static final int TYPE_CELL = 1006; 95 96 /** Type constant: crosshair. */ 97 public static final int TYPE_CROSSHAIR = 1007; 98 99 /** Type constant: text. */ 100 public static final int TYPE_TEXT = 1008; 101 102 /** Type constant: vertical-text. */ 103 public static final int TYPE_VERTICAL_TEXT = 1009; 104 105 /** Type constant: alias (indicating an alias of/shortcut to something is 106 * to be created. */ 107 public static final int TYPE_ALIAS = 1010; 108 109 /** Type constant: copy. */ 110 public static final int TYPE_COPY = 1011; 111 112 /** Type constant: no-drop. */ 113 public static final int TYPE_NO_DROP = 1012; 114 115 /** Type constant: all-scroll. */ 116 public static final int TYPE_ALL_SCROLL = 1013; 117 118 /** Type constant: horizontal double arrow mainly for resizing. */ 119 public static final int TYPE_HORIZONTAL_DOUBLE_ARROW = 1014; 120 121 /** Type constant: vertical double arrow mainly for resizing. */ 122 public static final int TYPE_VERTICAL_DOUBLE_ARROW = 1015; 123 124 /** Type constant: diagonal double arrow -- top-right to bottom-left. */ 125 public static final int TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW = 1016; 126 127 /** Type constant: diagonal double arrow -- top-left to bottom-right. */ 128 public static final int TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW = 1017; 129 130 /** Type constant: zoom-in. */ 131 public static final int TYPE_ZOOM_IN = 1018; 132 133 /** Type constant: zoom-out. */ 134 public static final int TYPE_ZOOM_OUT = 1019; 135 136 /** Type constant: grab. */ 137 public static final int TYPE_GRAB = 1020; 138 139 /** Type constant: grabbing. */ 140 public static final int TYPE_GRABBING = 1021; 141 142 /** Type constant: handwriting. */ 143 public static final int TYPE_HANDWRITING = 1022; 144 145 // OEM private types should be defined starting at this range to avoid 146 // conflicts with any system types that may be defined in the future. 147 private static final int TYPE_OEM_FIRST = 10000; 148 149 /** The default pointer icon. */ 150 public static final int TYPE_DEFAULT = TYPE_ARROW; 151 152 private static final PointerIcon gNullIcon = new PointerIcon(TYPE_NULL); 153 private static final SparseArray<SparseArray<PointerIcon>> gSystemIconsByDisplay = 154 new SparseArray<SparseArray<PointerIcon>>(); 155 private static boolean sUseLargeIcons = false; 156 157 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) 158 private final int mType; 159 private int mSystemIconResourceId; 160 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) 161 private Bitmap mBitmap; 162 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) 163 private float mHotSpotX; 164 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) 165 private float mHotSpotY; 166 // The bitmaps for the additional frame of animated pointer icon. Note that the first frame 167 // will be stored in mBitmap. 168 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) 169 private Bitmap mBitmapFrames[]; 170 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) 171 private int mDurationPerFrame; 172 173 /** 174 * Listener for displays lifecycle. 175 * @hide 176 */ 177 private static DisplayManager.DisplayListener sDisplayListener; 178 PointerIcon(int type)179 private PointerIcon(int type) { 180 mType = type; 181 } 182 183 /** 184 * Gets a special pointer icon that has no bitmap. 185 * 186 * @return The null pointer icon. 187 * 188 * @see #TYPE_NULL 189 * @hide 190 */ getNullIcon()191 public static @NonNull PointerIcon getNullIcon() { 192 return gNullIcon; 193 } 194 195 /** 196 * Gets the default pointer icon. 197 * 198 * @param context The context. 199 * @return The default pointer icon. 200 * 201 * @throws IllegalArgumentException if context is null. 202 * @hide 203 */ getDefaultIcon(@onNull Context context)204 public static @NonNull PointerIcon getDefaultIcon(@NonNull Context context) { 205 return getSystemIcon(context, TYPE_DEFAULT); 206 } 207 208 /** 209 * Gets a system pointer icon for the given type. 210 * If typeis not recognized, returns the default pointer icon. 211 * 212 * @param context The context. 213 * @param type The pointer icon type. 214 * @return The pointer icon. 215 * 216 * @throws IllegalArgumentException if context is null. 217 */ getSystemIcon(@onNull Context context, int type)218 public static @NonNull PointerIcon getSystemIcon(@NonNull Context context, int type) { 219 if (context == null) { 220 throw new IllegalArgumentException("context must not be null"); 221 } 222 223 if (type == TYPE_NULL) { 224 return gNullIcon; 225 } 226 227 if (sDisplayListener == null) { 228 registerDisplayListener(context); 229 } 230 231 final int displayId = context.getDisplayId(); 232 SparseArray<PointerIcon> systemIcons = gSystemIconsByDisplay.get(displayId); 233 if (systemIcons == null) { 234 systemIcons = new SparseArray<>(); 235 gSystemIconsByDisplay.put(displayId, systemIcons); 236 } 237 238 PointerIcon icon = systemIcons.get(type); 239 // Reload if not in the same display. 240 if (icon != null) { 241 return icon; 242 } 243 244 int typeIndex = getSystemIconTypeIndex(type); 245 if (typeIndex == 0) { 246 typeIndex = getSystemIconTypeIndex(TYPE_DEFAULT); 247 } 248 249 int defStyle = sUseLargeIcons ? 250 com.android.internal.R.style.LargePointer : com.android.internal.R.style.Pointer; 251 TypedArray a = context.obtainStyledAttributes(null, 252 com.android.internal.R.styleable.Pointer, 253 0, defStyle); 254 int resourceId = a.getResourceId(typeIndex, -1); 255 a.recycle(); 256 257 if (resourceId == -1) { 258 Log.w(TAG, "Missing theme resources for pointer icon type " + type); 259 return type == TYPE_DEFAULT ? gNullIcon : getSystemIcon(context, TYPE_DEFAULT); 260 } 261 262 icon = new PointerIcon(type); 263 if ((resourceId & 0xff000000) == 0x01000000) { 264 icon.mSystemIconResourceId = resourceId; 265 } else { 266 icon.loadResource(context, context.getResources(), resourceId); 267 } 268 systemIcons.append(type, icon); 269 return icon; 270 } 271 272 /** 273 * Updates wheter accessibility large icons are used or not. 274 * @hide 275 */ setUseLargeIcons(boolean use)276 public static void setUseLargeIcons(boolean use) { 277 sUseLargeIcons = use; 278 gSystemIconsByDisplay.clear(); 279 } 280 281 /** 282 * Creates a custom pointer icon from the given bitmap and hotspot information. 283 * 284 * @param bitmap The bitmap for the icon. 285 * @param hotSpotX The X offset of the pointer icon hotspot in the bitmap. 286 * Must be within the [0, bitmap.getWidth()) range. 287 * @param hotSpotY The Y offset of the pointer icon hotspot in the bitmap. 288 * Must be within the [0, bitmap.getHeight()) range. 289 * @return A pointer icon for this bitmap. 290 * 291 * @throws IllegalArgumentException if bitmap is null, or if the x/y hotspot 292 * parameters are invalid. 293 */ create(@onNull Bitmap bitmap, float hotSpotX, float hotSpotY)294 public static @NonNull PointerIcon create(@NonNull Bitmap bitmap, float hotSpotX, 295 float hotSpotY) { 296 if (bitmap == null) { 297 throw new IllegalArgumentException("bitmap must not be null"); 298 } 299 validateHotSpot(bitmap, hotSpotX, hotSpotY); 300 301 PointerIcon icon = new PointerIcon(TYPE_CUSTOM); 302 icon.mBitmap = bitmap; 303 icon.mHotSpotX = hotSpotX; 304 icon.mHotSpotY = hotSpotY; 305 return icon; 306 } 307 308 /** 309 * Loads a custom pointer icon from an XML resource. 310 * <p> 311 * The XML resource should have the following form: 312 * <code> 313 * <?xml version="1.0" encoding="utf-8"?> 314 * <pointer-icon xmlns:android="http://schemas.android.com/apk/res/android" 315 * android:bitmap="@drawable/my_pointer_bitmap" 316 * android:hotSpotX="24" 317 * android:hotSpotY="24" /> 318 * </code> 319 * </p> 320 * 321 * @param resources The resources object. 322 * @param resourceId The resource id. 323 * @return The pointer icon. 324 * 325 * @throws IllegalArgumentException if resources is null. 326 * @throws Resources.NotFoundException if the resource was not found or the drawable 327 * linked in the resource was not found. 328 */ load(@onNull Resources resources, @XmlRes int resourceId)329 public static @NonNull PointerIcon load(@NonNull Resources resources, @XmlRes int resourceId) { 330 if (resources == null) { 331 throw new IllegalArgumentException("resources must not be null"); 332 } 333 334 PointerIcon icon = new PointerIcon(TYPE_CUSTOM); 335 icon.loadResource(null, resources, resourceId); 336 return icon; 337 } 338 339 /** 340 * Loads the bitmap and hotspot information for a pointer icon, if it is not already loaded. 341 * Returns a pointer icon (not necessarily the same instance) with the information filled in. 342 * 343 * @param context The context. 344 * @return The loaded pointer icon. 345 * 346 * @throws IllegalArgumentException if context is null. 347 * @hide 348 */ 349 @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) load(@onNull Context context)350 public @NonNull PointerIcon load(@NonNull Context context) { 351 if (context == null) { 352 throw new IllegalArgumentException("context must not be null"); 353 } 354 355 if (mSystemIconResourceId == 0 || mBitmap != null) { 356 return this; 357 } 358 359 PointerIcon result = new PointerIcon(mType); 360 result.mSystemIconResourceId = mSystemIconResourceId; 361 result.loadResource(context, context.getResources(), mSystemIconResourceId); 362 return result; 363 } 364 365 /** @hide */ getType()366 public int getType() { 367 return mType; 368 } 369 370 public static final @NonNull Parcelable.Creator<PointerIcon> CREATOR 371 = new Parcelable.Creator<PointerIcon>() { 372 public PointerIcon createFromParcel(Parcel in) { 373 int type = in.readInt(); 374 if (type == TYPE_NULL) { 375 return getNullIcon(); 376 } 377 378 int systemIconResourceId = in.readInt(); 379 if (systemIconResourceId != 0) { 380 PointerIcon icon = new PointerIcon(type); 381 icon.mSystemIconResourceId = systemIconResourceId; 382 return icon; 383 } 384 385 Bitmap bitmap = Bitmap.CREATOR.createFromParcel(in); 386 float hotSpotX = in.readFloat(); 387 float hotSpotY = in.readFloat(); 388 return PointerIcon.create(bitmap, hotSpotX, hotSpotY); 389 } 390 391 public PointerIcon[] newArray(int size) { 392 return new PointerIcon[size]; 393 } 394 }; 395 describeContents()396 public int describeContents() { 397 return 0; 398 } 399 writeToParcel(Parcel out, int flags)400 public void writeToParcel(Parcel out, int flags) { 401 out.writeInt(mType); 402 403 if (mType != TYPE_NULL) { 404 out.writeInt(mSystemIconResourceId); 405 if (mSystemIconResourceId == 0) { 406 mBitmap.writeToParcel(out, flags); 407 out.writeFloat(mHotSpotX); 408 out.writeFloat(mHotSpotY); 409 } 410 } 411 } 412 413 @Override equals(@ullable Object other)414 public boolean equals(@Nullable Object other) { 415 if (this == other) { 416 return true; 417 } 418 419 if (other == null || !(other instanceof PointerIcon)) { 420 return false; 421 } 422 423 PointerIcon otherIcon = (PointerIcon) other; 424 if (mType != otherIcon.mType 425 || mSystemIconResourceId != otherIcon.mSystemIconResourceId) { 426 return false; 427 } 428 429 if (mSystemIconResourceId == 0 && (mBitmap != otherIcon.mBitmap 430 || mHotSpotX != otherIcon.mHotSpotX 431 || mHotSpotY != otherIcon.mHotSpotY)) { 432 return false; 433 } 434 435 return true; 436 } 437 438 /** 439 * Get the Bitmap from the Drawable. 440 * 441 * If the Bitmap needed to be scaled up to account for density, BitmapDrawable 442 * handles this at draw time. But this class doesn't actually draw the Bitmap; 443 * it is just a holder for native code to access its SkBitmap. So this needs to 444 * get a version that is scaled to account for density. 445 */ getBitmapFromDrawable(BitmapDrawable bitmapDrawable)446 private Bitmap getBitmapFromDrawable(BitmapDrawable bitmapDrawable) { 447 Bitmap bitmap = bitmapDrawable.getBitmap(); 448 final int scaledWidth = bitmapDrawable.getIntrinsicWidth(); 449 final int scaledHeight = bitmapDrawable.getIntrinsicHeight(); 450 if (scaledWidth == bitmap.getWidth() && scaledHeight == bitmap.getHeight()) { 451 return bitmap; 452 } 453 454 Rect src = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); 455 RectF dst = new RectF(0, 0, scaledWidth, scaledHeight); 456 457 Bitmap scaled = Bitmap.createBitmap(scaledWidth, scaledHeight, bitmap.getConfig()); 458 Canvas canvas = new Canvas(scaled); 459 Paint paint = new Paint(); 460 paint.setFilterBitmap(true); 461 canvas.drawBitmap(bitmap, src, dst, paint); 462 return scaled; 463 } 464 loadResource(Context context, Resources resources, @XmlRes int resourceId)465 private void loadResource(Context context, Resources resources, @XmlRes int resourceId) { 466 final XmlResourceParser parser = resources.getXml(resourceId); 467 final int bitmapRes; 468 final float hotSpotX; 469 final float hotSpotY; 470 try { 471 XmlUtils.beginDocument(parser, "pointer-icon"); 472 473 final TypedArray a = resources.obtainAttributes( 474 parser, com.android.internal.R.styleable.PointerIcon); 475 bitmapRes = a.getResourceId(com.android.internal.R.styleable.PointerIcon_bitmap, 0); 476 hotSpotX = a.getDimension(com.android.internal.R.styleable.PointerIcon_hotSpotX, 0); 477 hotSpotY = a.getDimension(com.android.internal.R.styleable.PointerIcon_hotSpotY, 0); 478 a.recycle(); 479 } catch (Exception ex) { 480 throw new IllegalArgumentException("Exception parsing pointer icon resource.", ex); 481 } finally { 482 parser.close(); 483 } 484 485 if (bitmapRes == 0) { 486 throw new IllegalArgumentException("<pointer-icon> is missing bitmap attribute."); 487 } 488 489 Drawable drawable; 490 if (context == null) { 491 drawable = resources.getDrawable(bitmapRes); 492 } else { 493 drawable = context.getDrawable(bitmapRes); 494 } 495 if (drawable instanceof AnimationDrawable) { 496 // Extract animation frame bitmaps. 497 final AnimationDrawable animationDrawable = (AnimationDrawable) drawable; 498 final int frames = animationDrawable.getNumberOfFrames(); 499 drawable = animationDrawable.getFrame(0); 500 if (frames == 1) { 501 Log.w(TAG, "Animation icon with single frame -- simply treating the first " 502 + "frame as a normal bitmap icon."); 503 } else { 504 // Assumes they have the exact duration. 505 mDurationPerFrame = animationDrawable.getDuration(0); 506 mBitmapFrames = new Bitmap[frames - 1]; 507 final int width = drawable.getIntrinsicWidth(); 508 final int height = drawable.getIntrinsicHeight(); 509 for (int i = 1; i < frames; ++i) { 510 Drawable drawableFrame = animationDrawable.getFrame(i); 511 if (!(drawableFrame instanceof BitmapDrawable)) { 512 throw new IllegalArgumentException("Frame of an animated pointer icon " 513 + "must refer to a bitmap drawable."); 514 } 515 if (drawableFrame.getIntrinsicWidth() != width || 516 drawableFrame.getIntrinsicHeight() != height) { 517 throw new IllegalArgumentException("The bitmap size of " + i + "-th frame " 518 + "is different. All frames should have the exact same size and " 519 + "share the same hotspot."); 520 } 521 BitmapDrawable bitmapDrawableFrame = (BitmapDrawable) drawableFrame; 522 mBitmapFrames[i - 1] = getBitmapFromDrawable(bitmapDrawableFrame); 523 } 524 } 525 } 526 if (!(drawable instanceof BitmapDrawable)) { 527 throw new IllegalArgumentException("<pointer-icon> bitmap attribute must " 528 + "refer to a bitmap drawable."); 529 } 530 531 BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable; 532 final Bitmap bitmap = getBitmapFromDrawable(bitmapDrawable); 533 validateHotSpot(bitmap, hotSpotX, hotSpotY); 534 // Set the properties now that we have successfully loaded the icon. 535 mBitmap = bitmap; 536 mHotSpotX = hotSpotX; 537 mHotSpotY = hotSpotY; 538 } 539 540 @Override toString()541 public String toString() { 542 return "PointerIcon{type=" + typeToString(mType) 543 + ", hotspotX=" + mHotSpotX + ", hotspotY=" + mHotSpotY 544 + ", systemIconResourceId=" + mSystemIconResourceId + "}"; 545 } 546 validateHotSpot(Bitmap bitmap, float hotSpotX, float hotSpotY)547 private static void validateHotSpot(Bitmap bitmap, float hotSpotX, float hotSpotY) { 548 if (hotSpotX < 0 || hotSpotX >= bitmap.getWidth()) { 549 throw new IllegalArgumentException("x hotspot lies outside of the bitmap area"); 550 } 551 if (hotSpotY < 0 || hotSpotY >= bitmap.getHeight()) { 552 throw new IllegalArgumentException("y hotspot lies outside of the bitmap area"); 553 } 554 } 555 getSystemIconTypeIndex(int type)556 private static int getSystemIconTypeIndex(int type) { 557 switch (type) { 558 case TYPE_ARROW: 559 return com.android.internal.R.styleable.Pointer_pointerIconArrow; 560 case TYPE_SPOT_HOVER: 561 return com.android.internal.R.styleable.Pointer_pointerIconSpotHover; 562 case TYPE_SPOT_TOUCH: 563 return com.android.internal.R.styleable.Pointer_pointerIconSpotTouch; 564 case TYPE_SPOT_ANCHOR: 565 return com.android.internal.R.styleable.Pointer_pointerIconSpotAnchor; 566 case TYPE_HAND: 567 return com.android.internal.R.styleable.Pointer_pointerIconHand; 568 case TYPE_CONTEXT_MENU: 569 return com.android.internal.R.styleable.Pointer_pointerIconContextMenu; 570 case TYPE_HELP: 571 return com.android.internal.R.styleable.Pointer_pointerIconHelp; 572 case TYPE_WAIT: 573 return com.android.internal.R.styleable.Pointer_pointerIconWait; 574 case TYPE_CELL: 575 return com.android.internal.R.styleable.Pointer_pointerIconCell; 576 case TYPE_CROSSHAIR: 577 return com.android.internal.R.styleable.Pointer_pointerIconCrosshair; 578 case TYPE_TEXT: 579 return com.android.internal.R.styleable.Pointer_pointerIconText; 580 case TYPE_VERTICAL_TEXT: 581 return com.android.internal.R.styleable.Pointer_pointerIconVerticalText; 582 case TYPE_ALIAS: 583 return com.android.internal.R.styleable.Pointer_pointerIconAlias; 584 case TYPE_COPY: 585 return com.android.internal.R.styleable.Pointer_pointerIconCopy; 586 case TYPE_ALL_SCROLL: 587 return com.android.internal.R.styleable.Pointer_pointerIconAllScroll; 588 case TYPE_NO_DROP: 589 return com.android.internal.R.styleable.Pointer_pointerIconNodrop; 590 case TYPE_HORIZONTAL_DOUBLE_ARROW: 591 return com.android.internal.R.styleable.Pointer_pointerIconHorizontalDoubleArrow; 592 case TYPE_VERTICAL_DOUBLE_ARROW: 593 return com.android.internal.R.styleable.Pointer_pointerIconVerticalDoubleArrow; 594 case TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW: 595 return com.android.internal.R.styleable. 596 Pointer_pointerIconTopRightDiagonalDoubleArrow; 597 case TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW: 598 return com.android.internal.R.styleable. 599 Pointer_pointerIconTopLeftDiagonalDoubleArrow; 600 case TYPE_ZOOM_IN: 601 return com.android.internal.R.styleable.Pointer_pointerIconZoomIn; 602 case TYPE_ZOOM_OUT: 603 return com.android.internal.R.styleable.Pointer_pointerIconZoomOut; 604 case TYPE_GRAB: 605 return com.android.internal.R.styleable.Pointer_pointerIconGrab; 606 case TYPE_GRABBING: 607 return com.android.internal.R.styleable.Pointer_pointerIconGrabbing; 608 case TYPE_HANDWRITING: 609 return com.android.internal.R.styleable.Pointer_pointerIconHandwriting; 610 default: 611 return 0; 612 } 613 } 614 615 /** 616 * Manage system icon cache handled by display lifecycle. 617 * @param context The context. 618 */ registerDisplayListener(@onNull Context context)619 private static void registerDisplayListener(@NonNull Context context) { 620 sDisplayListener = new DisplayManager.DisplayListener() { 621 @Override 622 public void onDisplayAdded(int displayId) { 623 } 624 625 @Override 626 public void onDisplayRemoved(int displayId) { 627 gSystemIconsByDisplay.remove(displayId); 628 } 629 630 @Override 631 public void onDisplayChanged(int displayId) { 632 gSystemIconsByDisplay.remove(displayId); 633 } 634 }; 635 636 DisplayManager displayManager = context.getSystemService(DisplayManager.class); 637 displayManager.registerDisplayListener(sDisplayListener, null /* handler */); 638 } 639 640 /** 641 * Convert type constant to string. 642 * @hide 643 */ typeToString(int type)644 public static String typeToString(int type) { 645 switch (type) { 646 case TYPE_CUSTOM: return "CUSTOM"; 647 case TYPE_NULL: return "NULL"; 648 case TYPE_NOT_SPECIFIED: return "NOT_SPECIFIED"; 649 case TYPE_ARROW: return "ARROW"; 650 case TYPE_SPOT_HOVER: return "SPOT_HOVER"; 651 case TYPE_SPOT_TOUCH: return "SPOT_TOUCH"; 652 case TYPE_SPOT_ANCHOR: return "SPOT_ANCHOR"; 653 case TYPE_CONTEXT_MENU: return "CONTEXT_MENU"; 654 case TYPE_HAND: return "HAND"; 655 case TYPE_HELP: return "HELP"; 656 case TYPE_WAIT: return "WAIT"; 657 case TYPE_CELL: return "CELL"; 658 case TYPE_CROSSHAIR: return "CROSSHAIR"; 659 case TYPE_TEXT: return "TEXT"; 660 case TYPE_VERTICAL_TEXT: return "VERTICAL_TEXT"; 661 case TYPE_ALIAS: return "ALIAS"; 662 case TYPE_COPY: return "COPY"; 663 case TYPE_NO_DROP: return "NO_DROP"; 664 case TYPE_ALL_SCROLL: return "ALL_SCROLL"; 665 case TYPE_HORIZONTAL_DOUBLE_ARROW: return "HORIZONTAL_DOUBLE_ARROW"; 666 case TYPE_VERTICAL_DOUBLE_ARROW: return "VERTICAL_DOUBLE_ARROW"; 667 case TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW: return "TOP_RIGHT_DIAGONAL_DOUBLE_ARROW"; 668 case TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW: return "TOP_LEFT_DIAGONAL_DOUBLE_ARROW"; 669 case TYPE_ZOOM_IN: return "ZOOM_IN"; 670 case TYPE_ZOOM_OUT: return "ZOOM_OUT"; 671 case TYPE_GRAB: return "GRAB"; 672 case TYPE_GRABBING: return "GRABBING"; 673 default: return Integer.toString(type); 674 } 675 } 676 } 677