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Better input event handling for waveform seek bar.

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This commit is contained in:
Anton Chekulaev 2020-10-22 16:48:41 +11:00
parent aacbe02327
commit 018e3288a4
1 changed files with 13 additions and 27 deletions
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40
src/org/thoughtcrime/securesms/loki/views/WaveformSeekBar.kt
View File

@ -15,7 +15,7 @@ import android.view.animation.DecelerateInterpolator
import androidx.core.math.MathUtils
import network.loki.messenger.R
import org.thoughtcrime.securesms.loki.utilities.audio.byteToNormalizedFloat
import java.lang.Math.abs
import kotlin.math.abs
import kotlin.math.max
import kotlin.math.min
import kotlin.math.roundToInt
@ -111,7 +111,9 @@ class WaveformSeekBar : View {
private var canvasWidth = 0
private var canvasHeight = 0
private var touchDownX = 0f
private var touchDownProgress: Float = 0f
private var scaledTouchSlop = ViewConfiguration.get(context).scaledTouchSlop
constructor(context: Context) : this(context, null)
@ -185,47 +187,31 @@ class WaveformSeekBar : View {
when (event.action) {
MotionEvent.ACTION_DOWN -> {
userSeeking = true
if (isParentScrolling()) {
touchDownX = event.x
} else {
updateProgress(event, false)
}
touchDownX = event.x
touchDownProgress = progress
updateProgress(event, false)
}
MotionEvent.ACTION_MOVE -> {
// Prevent any parent scrolling if the user scrolled more
// than scaledTouchSlop on horizontal axis.
if (abs(event.x - touchDownX) > scaledTouchSlop) {
parent.requestDisallowInterceptTouchEvent(true)
}
updateProgress(event, false)
}
MotionEvent.ACTION_UP -> {
userSeeking = false
if (abs(event.x - touchDownX) > scaledTouchSlop) {
updateProgress(event, true)
}
updateProgress(event, true)
performClick()
}
MotionEvent.ACTION_CANCEL -> {
updateProgress(touchDownProgress, false)
userSeeking = false
}
}
return true
}
private fun isParentScrolling(): Boolean {
var parent = parent as View
val root = rootView
while (true) {
when {
parent.canScrollHorizontally(+1) -> return true
parent.canScrollHorizontally(-1) -> return true
parent.canScrollVertically(+1) -> return true
parent.canScrollVertically(-1) -> return true
}
if (parent == root) return false
parent = parent.parent as View
}
}
private fun updateProgress(event: MotionEvent, notify: Boolean) {
updateProgress(event.x / getAvailableWidth(), notify)
}