cloudstream/app/src/main/java/com/lagradost/cloudstream3/ui/AutofitRecyclerView.kt
LagradOst 1549f67cd7 init
2021-05-12 23:51:02 +02:00

157 lines
No EOL
4.5 KiB
Kotlin

package com.lagradost.cloudstream3.ui
import android.content.Context
import android.util.AttributeSet
import android.view.View
import androidx.recyclerview.widget.GridLayoutManager
import androidx.recyclerview.widget.RecyclerView
import kotlin.math.abs
class GrdLayoutManager(val context: Context, val spanCoun: Int) : GridLayoutManager(context, spanCoun) {
override fun onFocusSearchFailed(
focused: View,
focusDirection: Int,
recycler: RecyclerView.Recycler,
state: RecyclerView.State
): View? {
return try {
val fromPos = getPosition(focused)
println("Search failed $fromPos")
val nextPos = getNextViewPos(fromPos, focusDirection)
findViewByPosition(nextPos)
} catch (e: Exception) {
null
}
}
override fun onRequestChildFocus(
parent: RecyclerView,
state: RecyclerView.State,
child: View,
focused: View?
): Boolean {
// android.widget.FrameLayout$LayoutParams cannot be cast to androidx.recyclerview.widget.RecyclerView$LayoutParams
return try {
val pos = maxOf(0, getPosition(focused!!) - 2)
parent.scrollToPosition(pos)
super.onRequestChildFocus(parent, state, child, focused)
} catch (e: Exception){
false
}
}
// Allows moving right and left with focus https://gist.github.com/vganin/8930b41f55820ec49e4d
override fun onInterceptFocusSearch(focused: View, direction: Int): View? {
return try {
val fromPos = getPosition(focused)
val nextPos = getNextViewPos(fromPos, direction)
findViewByPosition(nextPos)
} catch (e: Exception) {
null
}
}
private fun getNextViewPos(fromPos: Int, direction: Int): Int {
val offset = calcOffsetToNextView(direction)
if (hitBorder(fromPos, offset)) {
return fromPos
}
return fromPos + offset
}
private fun calcOffsetToNextView(direction: Int): Int {
println("calc")
val spanCount = this.spanCoun
val orientation = this.orientation
if (orientation == VERTICAL) {
when (direction) {
View.FOCUS_DOWN -> {
return spanCount
}
View.FOCUS_UP -> {
return -spanCount
}
View.FOCUS_RIGHT -> {
return 1
}
View.FOCUS_LEFT -> {
return -1
}
}
} else if (orientation == HORIZONTAL) {
when (direction) {
View.FOCUS_DOWN -> {
return 1
}
View.FOCUS_UP -> {
return -1
}
View.FOCUS_RIGHT -> {
return spanCount
}
View.FOCUS_LEFT -> {
return -spanCount
}
}
}
return 0
}
private fun hitBorder(from: Int, offset: Int): Boolean {
val spanCount = spanCount
return if (abs(offset) == 1) {
val spanIndex = from % spanCount
val newSpanIndex = spanIndex + offset
newSpanIndex < 0 || newSpanIndex >= spanCount
} else {
val newPos = from + offset
newPos in spanCount..-1
}
}
}
class AutofitRecyclerView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
RecyclerView(context, attrs) {
private val manager = GrdLayoutManager(context, 2) // THIS CONTROLS SPANS
private var columnWidth = -1
var spanCount = 0
set(value) {
field = value
if (value > 0) {
manager.spanCount = value
}
}
val itemWidth: Int
get() = measuredWidth / manager.spanCount
init {
if (attrs != null) {
val attrsArray = intArrayOf(android.R.attr.columnWidth)
val array = context.obtainStyledAttributes(attrs, attrsArray)
columnWidth = array.getDimensionPixelSize(0, -1)
array.recycle()
}
layoutManager = manager
}
/*override fun onMeasure(widthSpec: Int, heightSpec: Int) {
super.onMeasure(widthSpec, heightSpec)
if (spanCount == 0 && columnWidth > 0) {
val count = max(1, measuredWidth / columnWidth)
spanCount = count
}
}*/
}