Match extra layout space with scroll distance (#1076)
And increase recycler item view cache size. (cherry picked from commit a3dfd2efe6ace7a2a4d79bd09fb1a729989f1094)
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@ -13,12 +13,7 @@ import androidx.recyclerview.widget.RecyclerView.NO_POSITION
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* This layout manager uses the same package name as the support library in order to use a package
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* protected method.
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*/
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class WebtoonLayoutManager(context: Context) : LinearLayoutManager(context) {
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/**
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* Extra layout space is set to half the screen height.
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*/
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private val extraLayoutSpace = context.resources.displayMetrics.heightPixels / 2
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class WebtoonLayoutManager(context: Context, private val extraLayoutSpace: Int) : LinearLayoutManager(context) {
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init {
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isItemPrefetchEnabled = false
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@ -27,6 +22,7 @@ class WebtoonLayoutManager(context: Context) : LinearLayoutManager(context) {
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/**
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* Returns the custom extra layout space.
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*/
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@Deprecated("Deprecated in Java")
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override fun getExtraLayoutSpace(state: RecyclerView.State): Int {
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return extraLayoutSpace
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}
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@ -53,10 +53,15 @@ class WebtoonViewer(
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*/
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private val frame = WebtoonFrame(activity)
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/**
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* Distance to scroll when the user taps on one side of the recycler view.
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*/
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private val scrollDistance = activity.resources.displayMetrics.heightPixels * 3 / 4
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/**
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* Layout manager of the recycler view.
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*/
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private val layoutManager = WebtoonLayoutManager(activity)
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private val layoutManager = WebtoonLayoutManager(activity, scrollDistance)
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/**
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* Configuration used by this viewer, like allow taps, or crop image borders.
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@ -68,11 +73,6 @@ class WebtoonViewer(
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*/
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private val adapter = WebtoonAdapter(this)
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/**
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* Distance to scroll when the user taps on one side of the recycler view.
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*/
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private var scrollDistance = activity.resources.displayMetrics.heightPixels * 3 / 4
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/**
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* Currently active item. It can be a chapter page or a chapter transition.
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*/
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@ -86,6 +86,7 @@ class WebtoonViewer(
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.threshold
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init {
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recycler.setItemViewCacheSize(RecyclerViewCacheSize)
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recycler.isVisible = false // Don't let the recycler layout yet
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recycler.layoutParams = ViewGroup.LayoutParams(MATCH_PARENT, MATCH_PARENT)
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recycler.isFocusable = false
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@ -400,3 +401,5 @@ class WebtoonViewer(
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)
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}
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}
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private const val RecyclerViewCacheSize = 4
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