1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.accessibilityservice;
import android.annotation.IntRange;
import android.annotation.NonNull;
import android.graphics.Path;
import android.graphics.PathMeasure;
import android.graphics.RectF;
import android.os.Parcel;
import android.os.Parcelable;
import android.view.InputDevice;
import android.view.MotionEvent;
import android.view.MotionEvent.PointerCoords;
import android.view.MotionEvent.PointerProperties;
import java.util.ArrayList;
import java.util.List;
/**
* Accessibility services with the
* {@link android.R.styleable#AccessibilityService_canPerformGestures} property can dispatch
* gestures. This class describes those gestures. Gestures are made up of one or more strokes.
* Gestures are immutable once built.
* <p>
* Spatial dimensions throughout are in screen pixels. Time is measured in milliseconds.
*/
public final class GestureDescription {
/** Gestures may contain no more than this many strokes */
private static final int MAX_STROKE_COUNT = 10;
/**
* Upper bound on total gesture duration. Nearly all gestures will be much shorter.
*/
private static final long MAX_GESTURE_DURATION_MS = 60 * 1000;
private final List<StrokeDescription> mStrokes = new ArrayList<>();
private final float[] mTempPos = new float[2];
/**
* Get the upper limit for the number of strokes a gesture may contain.
*
* @return The maximum number of strokes.
*/
public static int getMaxStrokeCount() {
return MAX_STROKE_COUNT;
}
/**
* Get the upper limit on a gesture's duration.
*
* @return The maximum duration in milliseconds.
*/
public static long getMaxGestureDuration() {
return MAX_GESTURE_DURATION_MS;
}
private GestureDescription() {}
private GestureDescription(List<StrokeDescription> strokes) {
mStrokes.addAll(strokes);
}
/**
* Get the number of stroke in the gesture.
*
* @return the number of strokes in this gesture
*/
public int getStrokeCount() {
return mStrokes.size();
}
/**
* Read a stroke from the gesture
*
* @param index the index of the stroke
*
* @return A description of the stroke.
*/
public StrokeDescription getStroke(@IntRange(from = 0) int index) {
return mStrokes.get(index);
}
/**
* Return the smallest key point (where a path starts or ends) that is at least a specified
* offset
* @param offset the minimum start time
* @return The next key time that is at least the offset or -1 if one can't be found
*/
private long getNextKeyPointAtLeast(long offset) {
long nextKeyPoint = Long.MAX_VALUE;
for (int i = 0; i < mStrokes.size(); i++) {
long thisStartTime = mStrokes.get(i).mStartTime;
if ((thisStartTime < nextKeyPoint) && (thisStartTime >= offset)) {
nextKeyPoint = thisStartTime;
}
long thisEndTime = mStrokes.get(i).mEndTime;
if ((thisEndTime < nextKeyPoint) && (thisEndTime >= offset)) {
nextKeyPoint = thisEndTime;
}
}
return (nextKeyPoint == Long.MAX_VALUE) ? -1L : nextKeyPoint;
}
/**
* Get the points that correspond to a particular moment in time.
* @param time The time of interest
* @param touchPoints An array to hold the current touch points. Must be preallocated to at
* least the number of paths in the gesture to prevent going out of bounds
* @return The number of points found, and thus the number of elements set in each array
*/
private int getPointsForTime(long time, TouchPoint[] touchPoints) {
int numPointsFound = 0;
for (int i = 0; i < mStrokes.size(); i++) {
StrokeDescription strokeDescription = mStrokes.get(i);
if (strokeDescription.hasPointForTime(time)) {
touchPoints[numPointsFound].mPathIndex = i;
touchPoints[numPointsFound].mIsStartOfPath = (time == strokeDescription.mStartTime);
touchPoints[numPointsFound].mIsEndOfPath = (time == strokeDescription.mEndTime);
strokeDescription.getPosForTime(time, mTempPos);
touchPoints[numPointsFound].mX = Math.round(mTempPos[0]);
touchPoints[numPointsFound].mY = Math.round(mTempPos[1]);
numPointsFound++;
}
}
return numPointsFound;
}
// Total duration assumes that the gesture starts at 0; waiting around to start a gesture
// counts against total duration
private static long getTotalDuration(List<StrokeDescription> paths) {
long latestEnd = Long.MIN_VALUE;
for (int i = 0; i < paths.size(); i++) {
StrokeDescription path = paths.get(i);
latestEnd = Math.max(latestEnd, path.mEndTime);
}
return Math.max(latestEnd, 0);
}
/**
* Builder for a {@code GestureDescription}
*/
public static class Builder {
private final List<StrokeDescription> mStrokes = new ArrayList<>();
/**
* Add a stroke to the gesture description. Up to
* {@link GestureDescription#getMaxStrokeCount()} paths may be
* added to a gesture, and the total gesture duration (earliest path start time to latest
* path end time) may not exceed {@link GestureDescription#getMaxGestureDuration()}.
*
* @param strokeDescription the stroke to add.
*
* @return this
*/
public Builder addStroke(@NonNull StrokeDescription strokeDescription) {
if (mStrokes.size() >= MAX_STROKE_COUNT) {
throw new IllegalStateException(
"Attempting to add too many strokes to a gesture");
}
mStrokes.add(strokeDescription);
if (getTotalDuration(mStrokes) > MAX_GESTURE_DURATION_MS) {
mStrokes.remove(strokeDescription);
throw new IllegalStateException(
"Gesture would exceed maximum duration with new stroke");
}
return this;
}
public GestureDescription build() {
if (mStrokes.size() == 0) {
throw new IllegalStateException("Gestures must have at least one stroke");
}
return new GestureDescription(mStrokes);
}
}
/**
* Immutable description of stroke that can be part of a gesture.
*/
public static class StrokeDescription {
Path mPath;
long mStartTime;
long mEndTime;
private float mTimeToLengthConversion;
private PathMeasure mPathMeasure;
// The tap location is only set for zero-length paths
float[] mTapLocation;
/**
* @param path The path to follow. Must have exactly one contour. The bounds of the path
* must not be negative. The path must not be empty. If the path has zero length
* (for example, a single {@code moveTo()}), the stroke is a touch that doesn't move.
* @param startTime The time, in milliseconds, from the time the gesture starts to the
* time the stroke should start. Must not be negative.
* @param duration The duration, in milliseconds, the stroke takes to traverse the path.
* Must not be negative.
*/
public StrokeDescription(@NonNull Path path,
@IntRange(from = 0) long startTime,
@IntRange(from = 0) long duration) {
if (duration <= 0) {
throw new IllegalArgumentException("Duration must be positive");
}
if (startTime < 0) {
throw new IllegalArgumentException("Start time must not be negative");
}
RectF bounds = new RectF();
path.computeBounds(bounds, false /* unused */);
if ((bounds.bottom < 0) || (bounds.top < 0) || (bounds.right < 0)
|| (bounds.left < 0)) {
throw new IllegalArgumentException("Path bounds must not be negative");
}
if (path.isEmpty()) {
throw new IllegalArgumentException("Path is empty");
}
mPath = new Path(path);
mPathMeasure = new PathMeasure(path, false);
if (mPathMeasure.getLength() == 0) {
// Treat zero-length paths as taps
Path tempPath = new Path(path);
tempPath.lineTo(-1, -1);
mTapLocation = new float[2];
PathMeasure pathMeasure = new PathMeasure(tempPath, false);
pathMeasure.getPosTan(0, mTapLocation, null);
}
if (mPathMeasure.nextContour()) {
throw new IllegalArgumentException("Path has more than one contour");
}
/*
* Calling nextContour has moved mPathMeasure off the first contour, which is the only
* one we care about. Set the path again to go back to the first contour.
*/
mPathMeasure.setPath(mPath, false);
mStartTime = startTime;
mEndTime = startTime + duration;
mTimeToLengthConversion = getLength() / duration;
}
/**
* Retrieve a copy of the path for this stroke
*
* @return A copy of the path
*/
public Path getPath() {
return new Path(mPath);
}
/**
* Get the stroke's start time
*
* @return the start time for this stroke.
*/
public long getStartTime() {
return mStartTime;
}
/**
* Get the stroke's duration
*
* @return the duration for this stroke
*/
public long getDuration() {
return mEndTime - mStartTime;
}
float getLength() {
return mPathMeasure.getLength();
}
/* Assumes hasPointForTime returns true */
boolean getPosForTime(long time, float[] pos) {
if (mTapLocation != null) {
pos[0] = mTapLocation[0];
pos[1] = mTapLocation[1];
return true;
}
if (time == mEndTime) {
// Close to the end time, roundoff can be a problem
return mPathMeasure.getPosTan(getLength(), pos, null);
}
float length = mTimeToLengthConversion * ((float) (time - mStartTime));
return mPathMeasure.getPosTan(length, pos, null);
}
boolean hasPointForTime(long time) {
return ((time >= mStartTime) && (time <= mEndTime));
}
}
/**
* The location of a finger for gesture dispatch
*
* @hide
*/
public static class TouchPoint implements Parcelable {
private static final int FLAG_IS_START_OF_PATH = 0x01;
private static final int FLAG_IS_END_OF_PATH = 0x02;
int mPathIndex;
boolean mIsStartOfPath;
boolean mIsEndOfPath;
float mX;
float mY;
public TouchPoint() {
}
public TouchPoint(TouchPoint pointToCopy) {
copyFrom(pointToCopy);
}
public TouchPoint(Parcel parcel) {
mPathIndex = parcel.readInt();
int startEnd = parcel.readInt();
mIsStartOfPath = (startEnd & FLAG_IS_START_OF_PATH) != 0;
mIsEndOfPath = (startEnd & FLAG_IS_END_OF_PATH) != 0;
mX = parcel.readFloat();
mY = parcel.readFloat();
}
void copyFrom(TouchPoint other) {
mPathIndex = other.mPathIndex;
mIsStartOfPath = other.mIsStartOfPath;
mIsEndOfPath = other.mIsEndOfPath;
mX = other.mX;
mY = other.mY;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mPathIndex);
int startEnd = mIsStartOfPath ? FLAG_IS_START_OF_PATH : 0;
startEnd |= mIsEndOfPath ? FLAG_IS_END_OF_PATH : 0;
dest.writeInt(startEnd);
dest.writeFloat(mX);
dest.writeFloat(mY);
}
public static final Parcelable.Creator<TouchPoint> CREATOR
= new Parcelable.Creator<TouchPoint>() {
public TouchPoint createFromParcel(Parcel in) {
return new TouchPoint(in);
}
public TouchPoint[] newArray(int size) {
return new TouchPoint[size];
}
};
}
/**
* A step along a gesture. Contains all of the touch points at a particular time
*
* @hide
*/
public static class GestureStep implements Parcelable {
public long timeSinceGestureStart;
public int numTouchPoints;
public TouchPoint[] touchPoints;
public GestureStep(long timeSinceGestureStart, int numTouchPoints,
TouchPoint[] touchPointsToCopy) {
this.timeSinceGestureStart = timeSinceGestureStart;
this.numTouchPoints = numTouchPoints;
this.touchPoints = new TouchPoint[numTouchPoints];
for (int i = 0; i < numTouchPoints; i++) {
this.touchPoints[i] = new TouchPoint(touchPointsToCopy[i]);
}
}
public GestureStep(Parcel parcel) {
timeSinceGestureStart = parcel.readLong();
Parcelable[] parcelables =
parcel.readParcelableArray(TouchPoint.class.getClassLoader());
numTouchPoints = (parcelables == null) ? 0 : parcelables.length;
touchPoints = new TouchPoint[numTouchPoints];
for (int i = 0; i < numTouchPoints; i++) {
touchPoints[i] = (TouchPoint) parcelables[i];
}
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeLong(timeSinceGestureStart);
dest.writeParcelableArray(touchPoints, flags);
}
public static final Parcelable.Creator<GestureStep> CREATOR
= new Parcelable.Creator<GestureStep>() {
public GestureStep createFromParcel(Parcel in) {
return new GestureStep(in);
}
public GestureStep[] newArray(int size) {
return new GestureStep[size];
}
};
}
/**
* Class to convert a GestureDescription to a series of MotionEvents.
*
* @hide
*/
public static class MotionEventGenerator {
/**
* Constants used to initialize all MotionEvents
*/
private static final int EVENT_META_STATE = 0;
private static final int EVENT_BUTTON_STATE = 0;
private static final int EVENT_DEVICE_ID = 0;
private static final int EVENT_EDGE_FLAGS = 0;
private static final int EVENT_SOURCE = InputDevice.SOURCE_TOUCHSCREEN;
private static final int EVENT_FLAGS = 0;
private static final float EVENT_X_PRECISION = 1;
private static final float EVENT_Y_PRECISION = 1;
/* Lazily-created scratch memory for processing touches */
private static TouchPoint[] sCurrentTouchPoints;
private static TouchPoint[] sLastTouchPoints;
private static PointerCoords[] sPointerCoords;
private static PointerProperties[] sPointerProps;
static List<GestureStep> getGestureStepsFromGestureDescription(
GestureDescription description, int sampleTimeMs) {
final List<GestureStep> gestureSteps = new ArrayList<>();
// Point data at each time we generate an event for
final TouchPoint[] currentTouchPoints =
getCurrentTouchPoints(description.getStrokeCount());
int currentTouchPointSize = 0;
/* Loop through each time slice where there are touch points */
long timeSinceGestureStart = 0;
long nextKeyPointTime = description.getNextKeyPointAtLeast(timeSinceGestureStart);
while (nextKeyPointTime >= 0) {
timeSinceGestureStart = (currentTouchPointSize == 0) ? nextKeyPointTime
: Math.min(nextKeyPointTime, timeSinceGestureStart + sampleTimeMs);
currentTouchPointSize = description.getPointsForTime(timeSinceGestureStart,
currentTouchPoints);
gestureSteps.add(new GestureStep(timeSinceGestureStart, currentTouchPointSize,
currentTouchPoints));
/* Move to next time slice */
nextKeyPointTime = description.getNextKeyPointAtLeast(timeSinceGestureStart + 1);
}
return gestureSteps;
}
public static List<MotionEvent> getMotionEventsFromGestureSteps(List<GestureStep> steps) {
final List<MotionEvent> motionEvents = new ArrayList<>();
// Number of points in last touch event
int lastTouchPointSize = 0;
TouchPoint[] lastTouchPoints;
for (int i = 0; i < steps.size(); i++) {
GestureStep step = steps.get(i);
int currentTouchPointSize = step.numTouchPoints;
lastTouchPoints = getLastTouchPoints(
Math.max(lastTouchPointSize, currentTouchPointSize));
appendMoveEventIfNeeded(motionEvents, lastTouchPoints, lastTouchPointSize,
step.touchPoints, currentTouchPointSize, step.timeSinceGestureStart);
lastTouchPointSize = appendUpEvents(motionEvents, lastTouchPoints,
lastTouchPointSize, step.touchPoints, currentTouchPointSize,
step.timeSinceGestureStart);
lastTouchPointSize = appendDownEvents(motionEvents, lastTouchPoints,
lastTouchPointSize, step.touchPoints, currentTouchPointSize,
step.timeSinceGestureStart);
}
return motionEvents;
}
private static TouchPoint[] getCurrentTouchPoints(int requiredCapacity) {
if ((sCurrentTouchPoints == null) || (sCurrentTouchPoints.length < requiredCapacity)) {
sCurrentTouchPoints = new TouchPoint[requiredCapacity];
for (int i = 0; i < requiredCapacity; i++) {
sCurrentTouchPoints[i] = new TouchPoint();
}
}
return sCurrentTouchPoints;
}
private static TouchPoint[] getLastTouchPoints(int requiredCapacity) {
if ((sLastTouchPoints == null) || (sLastTouchPoints.length < requiredCapacity)) {
sLastTouchPoints = new TouchPoint[requiredCapacity];
for (int i = 0; i < requiredCapacity; i++) {
sLastTouchPoints[i] = new TouchPoint();
}
}
return sLastTouchPoints;
}
private static PointerCoords[] getPointerCoords(int requiredCapacity) {
if ((sPointerCoords == null) || (sPointerCoords.length < requiredCapacity)) {
sPointerCoords = new PointerCoords[requiredCapacity];
for (int i = 0; i < requiredCapacity; i++) {
sPointerCoords[i] = new PointerCoords();
}
}
return sPointerCoords;
}
private static PointerProperties[] getPointerProps(int requiredCapacity) {
if ((sPointerProps == null) || (sPointerProps.length < requiredCapacity)) {
sPointerProps = new PointerProperties[requiredCapacity];
for (int i = 0; i < requiredCapacity; i++) {
sPointerProps[i] = new PointerProperties();
}
}
return sPointerProps;
}
private static void appendMoveEventIfNeeded(List<MotionEvent> motionEvents,
TouchPoint[] lastTouchPoints, int lastTouchPointsSize,
TouchPoint[] currentTouchPoints, int currentTouchPointsSize, long currentTime) {
/* Look for pointers that have moved */
boolean moveFound = false;
for (int i = 0; i < currentTouchPointsSize; i++) {
int lastPointsIndex = findPointByPathIndex(lastTouchPoints, lastTouchPointsSize,
currentTouchPoints[i].mPathIndex);
if (lastPointsIndex >= 0) {
moveFound |= (lastTouchPoints[lastPointsIndex].mX != currentTouchPoints[i].mX)
|| (lastTouchPoints[lastPointsIndex].mY != currentTouchPoints[i].mY);
lastTouchPoints[lastPointsIndex].copyFrom(currentTouchPoints[i]);
}
}
if (moveFound) {
long downTime = motionEvents.get(motionEvents.size() - 1).getDownTime();
motionEvents.add(obtainMotionEvent(downTime, currentTime, MotionEvent.ACTION_MOVE,
lastTouchPoints, lastTouchPointsSize));
}
}
private static int appendUpEvents(List<MotionEvent> motionEvents,
TouchPoint[] lastTouchPoints, int lastTouchPointsSize,
TouchPoint[] currentTouchPoints, int currentTouchPointsSize, long currentTime) {
/* Look for a pointer at the end of its path */
for (int i = 0; i < currentTouchPointsSize; i++) {
if (currentTouchPoints[i].mIsEndOfPath) {
int indexOfUpEvent = findPointByPathIndex(lastTouchPoints, lastTouchPointsSize,
currentTouchPoints[i].mPathIndex);
if (indexOfUpEvent < 0) {
continue; // Should not happen
}
long downTime = motionEvents.get(motionEvents.size() - 1).getDownTime();
int action = (lastTouchPointsSize == 1) ? MotionEvent.ACTION_UP
: MotionEvent.ACTION_POINTER_UP;
action |= indexOfUpEvent << MotionEvent.ACTION_POINTER_INDEX_SHIFT;
motionEvents.add(obtainMotionEvent(downTime, currentTime, action,
lastTouchPoints, lastTouchPointsSize));
/* Remove this point from lastTouchPoints */
for (int j = indexOfUpEvent; j < lastTouchPointsSize - 1; j++) {
lastTouchPoints[j].copyFrom(lastTouchPoints[j+1]);
}
lastTouchPointsSize--;
}
}
return lastTouchPointsSize;
}
private static int appendDownEvents(List<MotionEvent> motionEvents,
TouchPoint[] lastTouchPoints, int lastTouchPointsSize,
TouchPoint[] currentTouchPoints, int currentTouchPointsSize, long currentTime) {
/* Look for a pointer that is just starting */
for (int i = 0; i < currentTouchPointsSize; i++) {
if (currentTouchPoints[i].mIsStartOfPath) {
/* Add the point to last coords and use the new array to generate the event */
lastTouchPoints[lastTouchPointsSize++].copyFrom(currentTouchPoints[i]);
int action = (lastTouchPointsSize == 1) ? MotionEvent.ACTION_DOWN
: MotionEvent.ACTION_POINTER_DOWN;
long downTime = (action == MotionEvent.ACTION_DOWN) ? currentTime :
motionEvents.get(motionEvents.size() - 1).getDownTime();
action |= i << MotionEvent.ACTION_POINTER_INDEX_SHIFT;
motionEvents.add(obtainMotionEvent(downTime, currentTime, action,
lastTouchPoints, lastTouchPointsSize));
}
}
return lastTouchPointsSize;
}
private static MotionEvent obtainMotionEvent(long downTime, long eventTime, int action,
TouchPoint[] touchPoints, int touchPointsSize) {
PointerCoords[] pointerCoords = getPointerCoords(touchPointsSize);
PointerProperties[] pointerProperties = getPointerProps(touchPointsSize);
for (int i = 0; i < touchPointsSize; i++) {
pointerProperties[i].id = touchPoints[i].mPathIndex;
pointerProperties[i].toolType = MotionEvent.TOOL_TYPE_UNKNOWN;
pointerCoords[i].clear();
pointerCoords[i].pressure = 1.0f;
pointerCoords[i].size = 1.0f;
pointerCoords[i].x = touchPoints[i].mX;
pointerCoords[i].y = touchPoints[i].mY;
}
return MotionEvent.obtain(downTime, eventTime, action, touchPointsSize,
pointerProperties, pointerCoords, EVENT_META_STATE, EVENT_BUTTON_STATE,
EVENT_X_PRECISION, EVENT_Y_PRECISION, EVENT_DEVICE_ID, EVENT_EDGE_FLAGS,
EVENT_SOURCE, EVENT_FLAGS);
}
private static int findPointByPathIndex(TouchPoint[] touchPoints, int touchPointsSize,
int pathIndex) {
for (int i = 0; i < touchPointsSize; i++) {
if (touchPoints[i].mPathIndex == pathIndex) {
return i;
}
}
return -1;
}
}
}
|