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滚动阅读时,多指触摸造成闪烁的问题

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This commit is contained in:
jaredtech 2023-03-30 12:20:40 +08:00
parent 2b0efb9d57
commit ed35e1749f
1 changed files with 3 additions and 19 deletions
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22
app/src/main/java/io/legado/app/ui/book/read/page/delegate/ScrollPageDelegate.kt
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@ -58,26 +58,10 @@ class ScrollPageDelegate(readView: ReadView) : PageDelegate(readView) {
private fun onScroll(event: MotionEvent) {
mVelocity.addMovement(event)
mVelocity.computeCurrentVelocity(velocityDuration)
val action: Int = event.action
val pointerUp =
action and MotionEvent.ACTION_MASK == MotionEvent.ACTION_POINTER_UP
val skipIndex = if (pointerUp) event.actionIndex else -1
// Determine focal point
var sumX = 0f
var sumY = 0f
val count: Int = event.pointerCount
for (i in 0 until count) {
if (skipIndex == i) continue
sumX += event.getX(i)
sumY += event.getY(i)
}
val div = if (pointerUp) count - 1 else count
val focusX = sumX / div
val focusY = sumY / div
readView.setTouchPoint(sumX, sumY)
readView.setTouchPoint(event.getX(0), event.getY(0))
if (!isMoved) {
val deltaX = (focusX - startX).toInt()
val deltaY = (focusY - startY).toInt()
val deltaX = (event.getX(0) - startX).toInt()
val deltaY = (event.getY(0) - startY).toInt()
val distance = deltaX * deltaX + deltaY * deltaY
isMoved = distance > readView.slopSquare
}