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session-android
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Code Issues 1 Projects Releases Wiki Activity

Tweak long press vs scroll gesture handling

This commit is contained in:
Niels Andriesse 2021-06-16 10:54:33 +10:00
parent eac0a87e40
commit c6cadf8d35
2 changed files with 24 additions and 3 deletions
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6
app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationRecyclerView.kt
View File

@ -2,14 +2,16 @@ package org.thoughtcrime.securesms.conversation.v2
import android.content.Context
import android.util.AttributeSet
import android.util.Log
import android.view.MotionEvent
import android.view.VelocityTracker
import androidx.recyclerview.widget.RecyclerView
import org.thoughtcrime.securesms.loki.utilities.disableClipping
import org.thoughtcrime.securesms.loki.utilities.toPx
import kotlin.math.abs
class ConversationRecyclerView : RecyclerView {
private val maxLongPressVelocityY = toPx(10, resources)
private val minSwipeVelocityX = toPx(10, resources)
private var velocityTracker: VelocityTracker? = null
constructor(context: Context) : super(context) { initialize() }
@ -27,6 +29,8 @@ class ConversationRecyclerView : RecyclerView {
val vy = velocityTracker.yVelocity
// Only allow swipes to the left; allowing swipes to the right interferes with some back gestures
if (vx > 0) { return super.onInterceptTouchEvent(e) }
// Distinguish between scrolling gestures and long presses
if (abs(vy) > maxLongPressVelocityY && abs(vx) < minSwipeVelocityX) { return super.onInterceptTouchEvent(e) }
// Return false if abs(v.x) > abs(v.y) so that only swipes that are more horizontal than vertical
// get passed on to the message view
if (abs(vx) > abs(vy)) {

21
app/src/main/java/org/thoughtcrime/securesms/conversation/v2/messages/VisibleMessageView.kt
View File

@ -189,7 +189,8 @@ class VisibleMessageView : LinearLayout {
when (event.action) {
MotionEvent.ACTION_DOWN -> onDown(event)
MotionEvent.ACTION_MOVE -> onMove(event)
MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> onFinish(event)
MotionEvent.ACTION_CANCEL -> onCancel(event)
MotionEvent.ACTION_UP -> onUp(event)
}
return true
}
@ -227,7 +228,23 @@ class VisibleMessageView : LinearLayout {
previousTranslationX = x
}
private fun onFinish(event: MotionEvent) {
private fun onCancel(event: MotionEvent) {
longPressCallback?.let { gestureHandler.removeCallbacks(it) }
animate()
.translationX(0.0f)
.setDuration(150)
.setUpdateListener {
postInvalidate() // Ensure onDraw(canvas:) is called
}
.start()
// Bit of a hack to keep the date break text view from moving
dateBreakTextView.animate()
.translationX(0.0f)
.setDuration(150)
.start()
}
private fun onUp(event: MotionEvent) {
if (abs(translationX) > VisibleMessageView.swipeToReplyThreshold) {
onSwipeToReply?.invoke()
} else if ((Date().time - onDownTimestamp) < VisibleMessageView.longPressDurationThreshold) {