-
Notifications
You must be signed in to change notification settings - Fork 4.7k
/
GestureHandler.kt
792 lines (697 loc) · 25.1 KB
/
GestureHandler.kt
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
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
package com.swmansion.gesturehandler.core
import android.app.Activity
import android.content.Context
import android.content.ContextWrapper
import android.graphics.PointF
import android.graphics.Rect
import android.view.MotionEvent
import android.view.MotionEvent.PointerCoords
import android.view.MotionEvent.PointerProperties
import android.view.View
import android.view.Window
import com.facebook.react.bridge.Arguments
import com.facebook.react.bridge.UiThreadUtil
import com.facebook.react.bridge.WritableArray
import com.facebook.react.uimanager.PixelUtil
import com.swmansion.gesturehandler.BuildConfig
import com.swmansion.gesturehandler.react.RNGestureHandlerTouchEvent
import java.lang.IllegalStateException
import java.util.*
open class GestureHandler<ConcreteGestureHandlerT : GestureHandler<ConcreteGestureHandlerT>> {
private val trackedPointerIDs = IntArray(MAX_POINTERS_COUNT)
private var trackedPointersIDsCount = 0
private val windowOffset = IntArray(2) { 0 }
var tag = 0
var view: View? = null
private set
var state = STATE_UNDETERMINED
private set
var x = 0f
private set
var y = 0f
private set
var isWithinBounds = false
private set
var isEnabled = true
private set
var actionType = 0
var changedTouchesPayload: WritableArray? = null
private set
var allTouchesPayload: WritableArray? = null
private set
var touchEventType = RNGestureHandlerTouchEvent.EVENT_UNDETERMINED
private set
var trackedPointersCount = 0
private set
private val trackedPointers: Array<PointerData?> = Array(MAX_POINTERS_COUNT) { null }
var needsPointerData = false
private var hitSlop: FloatArray? = null
var eventCoalescingKey: Short = 0
private set
var lastAbsolutePositionX = 0f
private set
var lastAbsolutePositionY = 0f
private set
private var manualActivation = false
private var lastEventOffsetX = 0f
private var lastEventOffsetY = 0f
private var shouldCancelWhenOutside = false
var numberOfPointers = 0
private set
private var orchestrator: GestureHandlerOrchestrator? = null
private var onTouchEventListener: OnTouchEventListener? = null
private var interactionController: GestureHandlerInteractionController? = null
@Suppress("UNCHECKED_CAST")
protected fun self(): ConcreteGestureHandlerT = this as ConcreteGestureHandlerT
protected inline fun applySelf(block: ConcreteGestureHandlerT.() -> Unit): ConcreteGestureHandlerT =
self().apply { block() }
// properties set and accessed only by the orchestrator
var activationIndex = 0
var isActive = false
var isAwaiting = false
var shouldResetProgress = false
open fun dispatchStateChange(newState: Int, prevState: Int) {
onTouchEventListener?.onStateChange(self(), newState, prevState)
}
open fun dispatchHandlerUpdate(event: MotionEvent) {
onTouchEventListener?.onHandlerUpdate(self(), event)
}
open fun dispatchTouchEvent() {
if (changedTouchesPayload != null) {
onTouchEventListener?.onTouchEvent(self())
}
}
open fun resetConfig() {
needsPointerData = false
manualActivation = false
shouldCancelWhenOutside = false
isEnabled = true
hitSlop = null
}
fun hasCommonPointers(other: GestureHandler<*>): Boolean {
for (i in trackedPointerIDs.indices) {
if (trackedPointerIDs[i] != -1 && other.trackedPointerIDs[i] != -1) {
return true
}
}
return false
}
fun setShouldCancelWhenOutside(shouldCancelWhenOutside: Boolean): ConcreteGestureHandlerT =
applySelf { this.shouldCancelWhenOutside = shouldCancelWhenOutside }
fun setEnabled(enabled: Boolean): ConcreteGestureHandlerT = applySelf {
// Don't cancel handler when not changing the value of the isEnabled, executing it always caused
// handlers to be cancelled on re-render because that's the moment when the config is updated.
// If the enabled prop "changed" from true to true the handler would get cancelled.
if (view != null && isEnabled != enabled) {
// If view is set then handler is in "active" state. In that case we want to "cancel" handler
// when it changes enabled state so that it gets cleared from the orchestrator
UiThreadUtil.runOnUiThread { cancel() }
}
isEnabled = enabled
}
fun setManualActivation(manualActivation: Boolean): ConcreteGestureHandlerT =
applySelf { this.manualActivation = manualActivation }
fun setHitSlop(
leftPad: Float,
topPad: Float,
rightPad: Float,
bottomPad: Float,
width: Float,
height: Float,
): ConcreteGestureHandlerT = applySelf {
if (hitSlop == null) {
hitSlop = FloatArray(6)
}
hitSlop!![HIT_SLOP_LEFT_IDX] = leftPad
hitSlop!![HIT_SLOP_TOP_IDX] = topPad
hitSlop!![HIT_SLOP_RIGHT_IDX] = rightPad
hitSlop!![HIT_SLOP_BOTTOM_IDX] = bottomPad
hitSlop!![HIT_SLOP_WIDTH_IDX] = width
hitSlop!![HIT_SLOP_HEIGHT_IDX] = height
require(!(hitSlopSet(width) && hitSlopSet(leftPad) && hitSlopSet(rightPad))) { "Cannot have all of left, right and width defined" }
require(!(hitSlopSet(width) && !hitSlopSet(leftPad) && !hitSlopSet(rightPad))) { "When width is set one of left or right pads need to be defined" }
require(!(hitSlopSet(height) && hitSlopSet(bottomPad) && hitSlopSet(topPad))) { "Cannot have all of top, bottom and height defined" }
require(!(hitSlopSet(height) && !hitSlopSet(bottomPad) && !hitSlopSet(topPad))) { "When height is set one of top or bottom pads need to be defined" }
}
fun setHitSlop(padding: Float): ConcreteGestureHandlerT {
return setHitSlop(padding, padding, padding, padding, HIT_SLOP_NONE, HIT_SLOP_NONE)
}
fun setInteractionController(controller: GestureHandlerInteractionController?): ConcreteGestureHandlerT =
applySelf { interactionController = controller }
fun prepare(view: View?, orchestrator: GestureHandlerOrchestrator?) {
check(!(this.view != null || this.orchestrator != null)) { "Already prepared or hasn't been reset" }
Arrays.fill(trackedPointerIDs, -1)
trackedPointersIDsCount = 0
state = STATE_UNDETERMINED
this.view = view
this.orchestrator = orchestrator
val decorView = getWindow(view?.context)?.decorView
if (decorView != null) {
val frame = Rect()
decorView.getWindowVisibleDisplayFrame(frame)
windowOffset[0] = frame.left
windowOffset[1] = frame.top
} else {
windowOffset[0] = 0
windowOffset[1] = 0
}
onPrepare()
}
protected open fun onPrepare() {}
private fun getWindow(context: Context?): Window? {
if (context == null) return null
if (context is Activity) return context.window
if (context is ContextWrapper) return getWindow(context.baseContext)
return null
}
private fun findNextLocalPointerId(): Int {
var localPointerId = 0
while (localPointerId < trackedPointersIDsCount) {
var i = 0
while (i < trackedPointerIDs.size) {
if (trackedPointerIDs[i] == localPointerId) {
break
}
i++
}
if (i == trackedPointerIDs.size) {
return localPointerId
}
localPointerId++
}
return localPointerId
}
fun startTrackingPointer(pointerId: Int) {
if (trackedPointerIDs[pointerId] == -1) {
trackedPointerIDs[pointerId] = findNextLocalPointerId()
trackedPointersIDsCount++
}
}
fun stopTrackingPointer(pointerId: Int) {
if (trackedPointerIDs[pointerId] != -1) {
trackedPointerIDs[pointerId] = -1
trackedPointersIDsCount--
}
}
private fun needAdapt(event: MotionEvent): Boolean {
if (event.pointerCount != trackedPointersIDsCount) {
return true
}
for (i in trackedPointerIDs.indices) {
val trackedPointer = trackedPointerIDs[i]
if (trackedPointer != -1 && trackedPointer != i) {
return true
}
}
return false
}
private fun adaptEvent(event: MotionEvent): MotionEvent {
if (!needAdapt(event)) {
return event
}
var action = event.actionMasked
var actionIndex = -1
if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_POINTER_DOWN) {
actionIndex = event.actionIndex
val actionPointer = event.getPointerId(actionIndex)
action = if (trackedPointerIDs[actionPointer] != -1) {
if (trackedPointersIDsCount == 1) MotionEvent.ACTION_DOWN else MotionEvent.ACTION_POINTER_DOWN
} else {
MotionEvent.ACTION_MOVE
}
} else if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_POINTER_UP) {
actionIndex = event.actionIndex
val actionPointer = event.getPointerId(actionIndex)
action = if (trackedPointerIDs[actionPointer] != -1) {
if (trackedPointersIDsCount == 1) MotionEvent.ACTION_UP else MotionEvent.ACTION_POINTER_UP
} else {
MotionEvent.ACTION_MOVE
}
}
initPointerProps(trackedPointersIDsCount)
var count = 0
val deltaX = event.rawX - event.x
val deltaY = event.rawY - event.y
event.offsetLocation(deltaX, deltaY)
var index = 0
val size = event.pointerCount
while (index < size) {
val origPointerId = event.getPointerId(index)
if (trackedPointerIDs[origPointerId] != -1) {
event.getPointerProperties(index, pointerProps[count])
pointerProps[count]!!.id = trackedPointerIDs[origPointerId]
event.getPointerCoords(index, pointerCoords[count])
if (index == actionIndex) {
action = action or (count shl MotionEvent.ACTION_POINTER_INDEX_SHIFT)
}
count++
}
index++
}
// introduced in 1.11.0, remove if crashes are not reported
if (pointerProps.isEmpty() || pointerCoords.isEmpty()) {
throw IllegalStateException("pointerCoords.size=${pointerCoords.size}, pointerProps.size=${pointerProps.size}")
}
val result: MotionEvent
try {
result = MotionEvent.obtain(
event.downTime,
event.eventTime,
action,
count,
pointerProps, /* props are copied and hence it is safe to use static array here */
pointerCoords, /* same applies to coords */
event.metaState,
event.buttonState,
event.xPrecision,
event.yPrecision,
event.deviceId,
event.edgeFlags,
event.source,
event.flags
)
} catch (e: IllegalArgumentException) {
throw AdaptEventException(this, event, e)
}
event.offsetLocation(-deltaX, -deltaY)
result.offsetLocation(-deltaX, -deltaY)
return result
}
// exception to help debug https://github.com/software-mansion/react-native-gesture-handler/issues/1188
class AdaptEventException(
handler: GestureHandler<*>,
event: MotionEvent,
e: IllegalArgumentException
) : Exception(
"""
handler: ${handler::class.simpleName}
state: ${handler.state}
view: ${handler.view}
orchestrator: ${handler.orchestrator}
isEnabled: ${handler.isEnabled}
isActive: ${handler.isActive}
isAwaiting: ${handler.isAwaiting}
trackedPointersCount: ${handler.trackedPointersIDsCount}
trackedPointers: ${handler.trackedPointerIDs.joinToString(separator = ", ")}
while handling event: $event
""".trimIndent(),
e
)
fun handle(transformedEvent: MotionEvent, sourceEvent: MotionEvent) {
if (!isEnabled ||
state == STATE_CANCELLED ||
state == STATE_FAILED ||
state == STATE_END ||
trackedPointersIDsCount < 1
) {
return
}
// a workaround for https://github.com/software-mansion/react-native-gesture-handler/issues/1188
val (adaptedTransformedEvent, adaptedSourceEvent) = if (BuildConfig.DEBUG) {
arrayOf(adaptEvent(transformedEvent), adaptEvent(sourceEvent))
} else {
try {
arrayOf(adaptEvent(transformedEvent), adaptEvent(sourceEvent))
} catch (e: AdaptEventException) {
fail()
return
}
}
x = adaptedTransformedEvent.x
y = adaptedTransformedEvent.y
numberOfPointers = adaptedTransformedEvent.pointerCount
isWithinBounds = isWithinBounds(view, x, y)
if (shouldCancelWhenOutside && !isWithinBounds) {
if (state == STATE_ACTIVE) {
cancel()
} else if (state == STATE_BEGAN) {
fail()
}
return
}
lastAbsolutePositionX = GestureUtils.getLastPointerX(adaptedTransformedEvent, true)
lastAbsolutePositionY = GestureUtils.getLastPointerY(adaptedTransformedEvent, true)
lastEventOffsetX = adaptedTransformedEvent.rawX - adaptedTransformedEvent.x
lastEventOffsetY = adaptedTransformedEvent.rawY - adaptedTransformedEvent.y
onHandle(adaptedTransformedEvent, adaptedSourceEvent)
if (adaptedTransformedEvent != transformedEvent) {
adaptedTransformedEvent.recycle()
}
if (adaptedSourceEvent != sourceEvent) {
adaptedSourceEvent.recycle()
}
}
private fun dispatchTouchDownEvent(event: MotionEvent) {
changedTouchesPayload = null
touchEventType = RNGestureHandlerTouchEvent.EVENT_TOUCH_DOWN
val pointerId = event.getPointerId(event.actionIndex)
val offsetX = event.rawX - event.x
val offsetY = event.rawY - event.y
trackedPointers[pointerId] = PointerData(
pointerId,
event.getX(event.actionIndex),
event.getY(event.actionIndex),
event.getX(event.actionIndex) + offsetX - windowOffset[0],
event.getY(event.actionIndex) + offsetY - windowOffset[1],
)
trackedPointersCount++
addChangedPointer(trackedPointers[pointerId]!!)
extractAllPointersData()
dispatchTouchEvent()
}
private fun dispatchTouchUpEvent(event: MotionEvent) {
extractAllPointersData()
changedTouchesPayload = null
touchEventType = RNGestureHandlerTouchEvent.EVENT_TOUCH_UP
val pointerId = event.getPointerId(event.actionIndex)
val offsetX = event.rawX - event.x
val offsetY = event.rawY - event.y
trackedPointers[pointerId] = PointerData(
pointerId,
event.getX(event.actionIndex),
event.getY(event.actionIndex),
event.getX(event.actionIndex) + offsetX - windowOffset[0],
event.getY(event.actionIndex) + offsetY - windowOffset[1],
)
addChangedPointer(trackedPointers[pointerId]!!)
trackedPointers[pointerId] = null
trackedPointersCount--
dispatchTouchEvent()
}
private fun dispatchTouchMoveEvent(event: MotionEvent) {
changedTouchesPayload = null
touchEventType = RNGestureHandlerTouchEvent.EVENT_TOUCH_MOVE
val offsetX = event.rawX - event.x
val offsetY = event.rawY - event.y
var pointersAdded = 0
for (i in 0 until event.pointerCount) {
val pointerId = event.getPointerId(i)
val pointer = trackedPointers[pointerId] ?: continue
if (pointer.x != event.getX(i) || pointer.y != event.getY(i)) {
pointer.x = event.getX(i)
pointer.y = event.getY(i)
pointer.absoluteX = event.getX(i) + offsetX - windowOffset[0]
pointer.absoluteY = event.getY(i) + offsetY - windowOffset[1]
addChangedPointer(pointer)
pointersAdded++
}
}
// only data about pointers that have changed their position is sent, it makes no sense to send
// an empty move event (especially when this method is called during down/up event and there is
// only info about one pointer)
if (pointersAdded > 0) {
extractAllPointersData()
dispatchTouchEvent()
}
}
fun updatePointerData(event: MotionEvent) {
if (event.actionMasked == MotionEvent.ACTION_DOWN || event.actionMasked == MotionEvent.ACTION_POINTER_DOWN) {
dispatchTouchDownEvent(event)
dispatchTouchMoveEvent(event)
} else if (event.actionMasked == MotionEvent.ACTION_UP || event.actionMasked == MotionEvent.ACTION_POINTER_UP) {
dispatchTouchMoveEvent(event)
dispatchTouchUpEvent(event)
} else if (event.actionMasked == MotionEvent.ACTION_MOVE) {
dispatchTouchMoveEvent(event)
}
}
private fun extractAllPointersData() {
allTouchesPayload = null
for (pointerData in trackedPointers) {
if (pointerData != null) {
addPointerToAll(pointerData)
}
}
}
private fun cancelPointers() {
touchEventType = RNGestureHandlerTouchEvent.EVENT_TOUCH_CANCELLED
changedTouchesPayload = null
extractAllPointersData()
for (pointer in trackedPointers) {
pointer?.let {
addChangedPointer(it)
}
}
trackedPointersCount = 0
trackedPointers.fill(null)
dispatchTouchEvent()
}
private fun addChangedPointer(pointerData: PointerData) {
if (changedTouchesPayload == null) {
changedTouchesPayload = Arguments.createArray()
}
changedTouchesPayload!!.pushMap(createPointerData(pointerData))
}
private fun addPointerToAll(pointerData: PointerData) {
if (allTouchesPayload == null) {
allTouchesPayload = Arguments.createArray()
}
allTouchesPayload!!.pushMap(createPointerData(pointerData))
}
private fun createPointerData(pointerData: PointerData) = Arguments.createMap().apply {
putInt("id", pointerData.pointerId)
putDouble("x", PixelUtil.toDIPFromPixel(pointerData.x).toDouble())
putDouble("y", PixelUtil.toDIPFromPixel(pointerData.y).toDouble())
putDouble("absoluteX", PixelUtil.toDIPFromPixel(pointerData.absoluteX).toDouble())
putDouble("absoluteY", PixelUtil.toDIPFromPixel(pointerData.absoluteY).toDouble())
}
fun consumeChangedTouchesPayload(): WritableArray? {
val result = changedTouchesPayload
changedTouchesPayload = null
return result
}
fun consumeAllTouchesPayload(): WritableArray? {
val result = allTouchesPayload
allTouchesPayload = null
return result
}
private fun moveToState(newState: Int) {
UiThreadUtil.assertOnUiThread()
if (state == newState) {
return
}
// if there are tracked pointers and the gesture is about to end, send event cancelling all pointers
if (trackedPointersCount > 0 && (newState == STATE_END || newState == STATE_CANCELLED || newState == STATE_FAILED)) {
cancelPointers()
}
val oldState = state
state = newState
if (state == STATE_ACTIVE) {
// Generate a unique coalescing-key each time the gesture-handler becomes active. All events will have
// the same coalescing-key allowing EventDispatcher to coalesce RNGestureHandlerEvents when events are
// generated faster than they can be treated by JS thread
eventCoalescingKey = nextEventCoalescingKey++
}
orchestrator!!.onHandlerStateChange(this, newState, oldState)
onStateChange(newState, oldState)
}
fun wantEvents(): Boolean {
return isEnabled &&
state != STATE_FAILED &&
state != STATE_CANCELLED &&
state != STATE_END &&
trackedPointersIDsCount > 0
}
open fun shouldRequireToWaitForFailure(handler: GestureHandler<*>): Boolean {
if (handler === this) {
return false
}
return interactionController?.shouldRequireHandlerToWaitForFailure(this, handler) ?: false
}
fun shouldWaitForHandlerFailure(handler: GestureHandler<*>): Boolean {
if (handler === this) {
return false
}
return interactionController?.shouldWaitForHandlerFailure(this, handler) ?: false
}
open fun shouldRecognizeSimultaneously(handler: GestureHandler<*>): Boolean {
if (handler === this) {
return true
}
return interactionController?.shouldRecognizeSimultaneously(this, handler) ?: false
}
open fun shouldBeCancelledBy(handler: GestureHandler<*>): Boolean {
if (handler === this) {
return false
}
return interactionController?.shouldHandlerBeCancelledBy(this, handler) ?: false
}
fun isWithinBounds(view: View?, posX: Float, posY: Float): Boolean {
var left = 0f
var top = 0f
var right = view!!.width.toFloat()
var bottom = view.height.toFloat()
hitSlop?.let { hitSlop ->
val padLeft = hitSlop[HIT_SLOP_LEFT_IDX]
val padTop = hitSlop[HIT_SLOP_TOP_IDX]
val padRight = hitSlop[HIT_SLOP_RIGHT_IDX]
val padBottom = hitSlop[HIT_SLOP_BOTTOM_IDX]
if (hitSlopSet(padLeft)) {
left -= padLeft
}
if (hitSlopSet(padTop)) {
top -= padTop
}
if (hitSlopSet(padRight)) {
right += padRight
}
if (hitSlopSet(padBottom)) {
bottom += padBottom
}
val width = hitSlop[HIT_SLOP_WIDTH_IDX]
val height = hitSlop[HIT_SLOP_HEIGHT_IDX]
if (hitSlopSet(width)) {
if (!hitSlopSet(padLeft)) {
left = right - width
} else if (!hitSlopSet(padRight)) {
right = left + width
}
}
if (hitSlopSet(height)) {
if (!hitSlopSet(padTop)) {
top = bottom - height
} else if (!hitSlopSet(padBottom)) {
bottom = top + height
}
}
}
return posX in left..right && posY in top..bottom
}
fun cancel() {
if (state == STATE_ACTIVE || state == STATE_UNDETERMINED || state == STATE_BEGAN) {
onCancel()
moveToState(STATE_CANCELLED)
}
}
fun fail() {
if (state == STATE_ACTIVE || state == STATE_UNDETERMINED || state == STATE_BEGAN) {
moveToState(STATE_FAILED)
}
}
fun activate() = activate(force = false)
open fun activate(force: Boolean) {
if ((!manualActivation || force) && (state == STATE_UNDETERMINED || state == STATE_BEGAN)) {
moveToState(STATE_ACTIVE)
}
}
fun begin() {
if (state == STATE_UNDETERMINED) {
moveToState(STATE_BEGAN)
}
}
fun end() {
if (state == STATE_BEGAN || state == STATE_ACTIVE) {
moveToState(STATE_END)
}
}
// responsible for resetting the state of handler upon activation (may be called more than once
// if the handler is waiting for failure of other one)
open fun resetProgress() {}
protected open fun onHandle(event: MotionEvent, sourceEvent: MotionEvent) {
moveToState(STATE_FAILED)
}
protected open fun onStateChange(newState: Int, previousState: Int) {}
protected open fun onReset() {}
protected open fun onCancel() {}
/**
* Transforms a point in the coordinate space of the wrapperView (GestureHandlerRootView) to
* coordinate space of the view the gesture is attached to.
*
* If the gesture handler is not currently attached to a view, it will return (NaN, NaN).
*
* This method modifies and transforms the received point.
*/
protected fun transformPoint(point: PointF): PointF {
return orchestrator?.transformPointToViewCoords(this.view, point) ?: run {
point.x = Float.NaN
point.y = Float.NaN
point
}
}
fun reset() {
view = null
orchestrator = null
Arrays.fill(trackedPointerIDs, -1)
trackedPointersIDsCount = 0
trackedPointersCount = 0
trackedPointers.fill(null)
touchEventType = RNGestureHandlerTouchEvent.EVENT_UNDETERMINED
onReset()
}
fun setOnTouchEventListener(listener: OnTouchEventListener?): GestureHandler<*> {
onTouchEventListener = listener
return this
}
override fun toString(): String {
val viewString = if (view == null) null else view!!.javaClass.simpleName
return this.javaClass.simpleName + "@[" + tag + "]:" + viewString
}
val lastRelativePositionX: Float
get() = lastAbsolutePositionX
val lastRelativePositionY: Float
get() = lastAbsolutePositionY
val lastPositionInWindowX: Float
get() = lastAbsolutePositionX + lastEventOffsetX - windowOffset[0]
val lastPositionInWindowY: Float
get() = lastAbsolutePositionY + lastEventOffsetY - windowOffset[1]
companion object {
const val STATE_UNDETERMINED = 0
const val STATE_FAILED = 1
const val STATE_BEGAN = 2
const val STATE_CANCELLED = 3
const val STATE_ACTIVE = 4
const val STATE_END = 5
const val HIT_SLOP_NONE = Float.NaN
private const val HIT_SLOP_LEFT_IDX = 0
private const val HIT_SLOP_TOP_IDX = 1
private const val HIT_SLOP_RIGHT_IDX = 2
private const val HIT_SLOP_BOTTOM_IDX = 3
private const val HIT_SLOP_WIDTH_IDX = 4
private const val HIT_SLOP_HEIGHT_IDX = 5
const val DIRECTION_RIGHT = 1
const val DIRECTION_LEFT = 2
const val DIRECTION_UP = 4
const val DIRECTION_DOWN = 8
const val ACTION_TYPE_REANIMATED_WORKLET = 1
const val ACTION_TYPE_NATIVE_ANIMATED_EVENT = 2
const val ACTION_TYPE_JS_FUNCTION_OLD_API = 3
const val ACTION_TYPE_JS_FUNCTION_NEW_API = 4
private const val MAX_POINTERS_COUNT = 12
private lateinit var pointerProps: Array<PointerProperties?>
private lateinit var pointerCoords: Array<PointerCoords?>
private fun initPointerProps(size: Int) {
var size = size
if (!Companion::pointerProps.isInitialized) {
pointerProps = arrayOfNulls(MAX_POINTERS_COUNT)
pointerCoords = arrayOfNulls(MAX_POINTERS_COUNT)
}
while (size > 0 && pointerProps[size - 1] == null) {
pointerProps[size - 1] = PointerProperties()
pointerCoords[size - 1] = PointerCoords()
size--
}
}
private var nextEventCoalescingKey: Short = 0
private fun hitSlopSet(value: Float): Boolean {
return !java.lang.Float.isNaN(value)
}
fun stateToString(state: Int): String? {
when (state) {
STATE_UNDETERMINED -> return "UNDETERMINED"
STATE_ACTIVE -> return "ACTIVE"
STATE_FAILED -> return "FAILED"
STATE_BEGAN -> return "BEGIN"
STATE_CANCELLED -> return "CANCELLED"
STATE_END -> return "END"
}
return null
}
}
private data class PointerData(
val pointerId: Int,
var x: Float,
var y: Float,
var absoluteX: Float,
var absoluteY: Float
)
}