Readers refactor

master
Koitharu 2 years ago
parent a95017a5f0
commit 0fff53ae47
Signed by: Koitharu
GPG Key ID: 676DEE768C17A9D7

@ -0,0 +1,189 @@
package org.koitharu.kotatsu.reader.ui.pager
import android.os.Build
import android.os.Bundle
import android.view.InputDevice
import android.view.KeyEvent
import android.view.LayoutInflater
import android.view.MotionEvent
import android.view.View
import android.view.ViewGroup
import androidx.core.view.children
import androidx.viewpager2.widget.ViewPager2
import androidx.viewpager2.widget.ViewPager2.PageTransformer
import com.google.android.material.snackbar.Snackbar
import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.coroutineScope
import kotlinx.coroutines.launch
import kotlinx.coroutines.yield
import org.koitharu.kotatsu.R
import org.koitharu.kotatsu.core.os.NetworkState
import org.koitharu.kotatsu.core.prefs.ReaderAnimation
import org.koitharu.kotatsu.core.ui.list.lifecycle.PagerLifecycleDispatcher
import org.koitharu.kotatsu.core.util.ext.doOnPageChanged
import org.koitharu.kotatsu.core.util.ext.findCurrentViewHolder
import org.koitharu.kotatsu.core.util.ext.observe
import org.koitharu.kotatsu.core.util.ext.recyclerView
import org.koitharu.kotatsu.core.util.ext.resetTransformations
import org.koitharu.kotatsu.databinding.FragmentReaderPagerBinding
import org.koitharu.kotatsu.reader.domain.PageLoader
import org.koitharu.kotatsu.reader.ui.ReaderState
import org.koitharu.kotatsu.reader.ui.pager.standard.NoAnimPageTransformer
import org.koitharu.kotatsu.reader.ui.pager.standard.PageAnimTransformer
import org.koitharu.kotatsu.reader.ui.pager.standard.PageHolder
import org.koitharu.kotatsu.reader.ui.pager.standard.PagerEventSupplier
import org.koitharu.kotatsu.reader.ui.pager.standard.PagesAdapter
import javax.inject.Inject
import kotlin.math.absoluteValue
import kotlin.math.sign
@AndroidEntryPoint
abstract class BasePagerReaderFragment : BaseReaderFragment<FragmentReaderPagerBinding>(),
View.OnGenericMotionListener {
@Inject
lateinit var networkState: NetworkState
@Inject
lateinit var pageLoader: PageLoader
private var pagerLifecycleDispatcher: PagerLifecycleDispatcher? = null
override fun onCreateViewBinding(
inflater: LayoutInflater,
container: ViewGroup?,
) = FragmentReaderPagerBinding.inflate(inflater, container, false)
override fun onViewBindingCreated(
binding: FragmentReaderPagerBinding,
savedInstanceState: Bundle?,
) {
super.onViewBindingCreated(binding, savedInstanceState)
with(binding.pager) {
onInitPager(this)
doOnPageChanged(::notifyPageChanged)
setOnGenericMotionListener(this@BasePagerReaderFragment)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
recyclerView?.defaultFocusHighlightEnabled = false
}
PagerEventSupplier(this).attach()
pagerLifecycleDispatcher = PagerLifecycleDispatcher(this).also {
registerOnPageChangeCallback(it)
}
adapter = readerAdapter
}
viewModel.pageAnimation.observe(viewLifecycleOwner) {
val transformer = when (it) {
ReaderAnimation.NONE -> NoAnimPageTransformer()
ReaderAnimation.DEFAULT -> null
ReaderAnimation.ADVANCED -> onCreateAdvancedTransformer()
}
binding.pager.setPageTransformer(transformer)
if (transformer == null) {
binding.pager.recyclerView?.children?.forEach { view ->
view.resetTransformations()
}
}
}
}
override fun onDestroyView() {
pagerLifecycleDispatcher = null
requireViewBinding().pager.adapter = null
super.onDestroyView()
}
override fun onZoomIn() {
(viewBinding?.pager?.findCurrentViewHolder() as? PageHolder)?.onZoomIn()
}
override fun onZoomOut() {
(viewBinding?.pager?.findCurrentViewHolder() as? PageHolder)?.onZoomOut()
}
override fun onGenericMotion(v: View?, event: MotionEvent): Boolean {
if (event.source and InputDevice.SOURCE_CLASS_POINTER != 0) {
if (event.actionMasked == MotionEvent.ACTION_SCROLL) {
val axisValue = event.getAxisValue(MotionEvent.AXIS_VSCROLL)
val withCtrl = event.metaState and KeyEvent.META_CTRL_MASK != 0
if (!withCtrl) {
switchPageBy(-axisValue.sign.toInt())
return true
}
}
}
return false
}
override suspend fun onPagesChanged(pages: List<ReaderPage>, pendingState: ReaderState?) = coroutineScope {
val items = launch {
requireAdapter().setItems(pages)
yield()
pagerLifecycleDispatcher?.invalidate()
}
if (pendingState != null) {
val position = pages.indexOfFirst {
it.chapterId == pendingState.chapterId && it.index == pendingState.page
}
items.join()
if (position != -1) {
requireViewBinding().pager.setCurrentItem(position, false)
notifyPageChanged(position)
} else {
Snackbar.make(requireView(), R.string.not_found_404, Snackbar.LENGTH_SHORT)
.show()
}
} else {
items.join()
}
}
override fun onCreateAdapter(): BaseReaderAdapter<*> = PagesAdapter(
lifecycleOwner = viewLifecycleOwner,
loader = pageLoader,
settings = viewModel.readerSettings,
networkState = networkState,
exceptionResolver = exceptionResolver,
)
override fun switchPageBy(delta: Int) {
with(requireViewBinding().pager) {
setCurrentItem(currentItem + delta, isAnimationEnabled())
}
}
override fun switchPageTo(position: Int, smooth: Boolean) {
with(requireViewBinding().pager) {
setCurrentItem(
position,
smooth && isAnimationEnabled() && (currentItem - position).absoluteValue < SMOOTH_SCROLL_LIMIT,
)
}
}
override fun getCurrentState(): ReaderState? = viewBinding?.run {
val adapter = pager.adapter as? BaseReaderAdapter<*>
val page = adapter?.getItemOrNull(pager.currentItem) ?: return@run null
ReaderState(
chapterId = page.chapterId,
page = page.index,
scroll = 0,
)
}
protected open fun onCreateAdvancedTransformer(): PageTransformer = PageAnimTransformer()
protected open fun onInitPager(pager: ViewPager2) {
pager.offscreenPageLimit = 2
}
protected open fun notifyPageChanged(page: Int) {
viewModel.onCurrentPageChanged(page)
}
companion object {
const val SMOOTH_SCROLL_LIMIT = 3
}
}

@ -1,109 +1,15 @@
package org.koitharu.kotatsu.reader.ui.pager.reversed package org.koitharu.kotatsu.reader.ui.pager.reversed
import android.os.Build import androidx.viewpager2.widget.ViewPager2
import android.os.Bundle
import android.view.InputDevice
import android.view.KeyEvent
import android.view.LayoutInflater
import android.view.MotionEvent
import android.view.View
import android.view.ViewGroup
import androidx.core.view.children
import com.google.android.material.snackbar.Snackbar
import dagger.hilt.android.AndroidEntryPoint import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.coroutineScope
import kotlinx.coroutines.launch
import kotlinx.coroutines.yield
import org.koitharu.kotatsu.R
import org.koitharu.kotatsu.core.os.NetworkState
import org.koitharu.kotatsu.core.prefs.ReaderAnimation
import org.koitharu.kotatsu.core.ui.list.lifecycle.PagerLifecycleDispatcher
import org.koitharu.kotatsu.core.util.ext.doOnPageChanged
import org.koitharu.kotatsu.core.util.ext.findCurrentViewHolder
import org.koitharu.kotatsu.core.util.ext.observe
import org.koitharu.kotatsu.core.util.ext.recyclerView
import org.koitharu.kotatsu.core.util.ext.resetTransformations
import org.koitharu.kotatsu.databinding.FragmentReaderStandardBinding
import org.koitharu.kotatsu.reader.domain.PageLoader
import org.koitharu.kotatsu.reader.ui.ReaderState import org.koitharu.kotatsu.reader.ui.ReaderState
import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter import org.koitharu.kotatsu.reader.ui.pager.BasePagerReaderFragment
import org.koitharu.kotatsu.reader.ui.pager.BaseReaderFragment
import org.koitharu.kotatsu.reader.ui.pager.ReaderPage import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
import org.koitharu.kotatsu.reader.ui.pager.standard.NoAnimPageTransformer
import org.koitharu.kotatsu.reader.ui.pager.standard.PageHolder
import org.koitharu.kotatsu.reader.ui.pager.standard.PagerEventSupplier
import org.koitharu.kotatsu.reader.ui.pager.standard.PagerReaderFragment
import javax.inject.Inject
import kotlin.math.absoluteValue
import kotlin.math.sign
@AndroidEntryPoint @AndroidEntryPoint
class ReversedReaderFragment : BaseReaderFragment<FragmentReaderStandardBinding>(), class ReversedReaderFragment : BasePagerReaderFragment() {
View.OnGenericMotionListener {
@Inject override fun onCreateAdvancedTransformer(): ViewPager2.PageTransformer = ReversedPageAnimTransformer()
lateinit var networkState: NetworkState
@Inject
lateinit var pageLoader: PageLoader
private var pagerLifecycleDispatcher: PagerLifecycleDispatcher? = null
override fun onCreateViewBinding(
inflater: LayoutInflater,
container: ViewGroup?,
) = FragmentReaderStandardBinding.inflate(inflater, container, false)
override fun onViewBindingCreated(binding: FragmentReaderStandardBinding, savedInstanceState: Bundle?) {
super.onViewBindingCreated(binding, savedInstanceState)
with(binding.pager) {
adapter = readerAdapter
offscreenPageLimit = 2
doOnPageChanged(::notifyPageChanged)
setOnGenericMotionListener(this@ReversedReaderFragment)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
recyclerView?.defaultFocusHighlightEnabled = false
}
PagerEventSupplier(this).attach()
pagerLifecycleDispatcher = PagerLifecycleDispatcher(this).also {
registerOnPageChangeCallback(it)
}
}
viewModel.pageAnimation.observe(viewLifecycleOwner) {
val transformer = when (it) {
ReaderAnimation.NONE -> NoAnimPageTransformer()
ReaderAnimation.DEFAULT -> null
ReaderAnimation.ADVANCED -> ReversedPageAnimTransformer()
}
binding.pager.setPageTransformer(transformer)
if (transformer == null) {
binding.pager.recyclerView?.children?.forEach { v ->
v.resetTransformations()
}
}
}
}
override fun onDestroyView() {
pagerLifecycleDispatcher = null
requireViewBinding().pager.adapter = null
super.onDestroyView()
}
override fun onGenericMotion(v: View?, event: MotionEvent): Boolean {
if (event.source and InputDevice.SOURCE_CLASS_POINTER != 0) {
if (event.actionMasked == MotionEvent.ACTION_SCROLL) {
val axisValue = event.getAxisValue(MotionEvent.AXIS_VSCROLL)
val withCtrl = event.metaState and KeyEvent.META_CTRL_MASK != 0
if (!withCtrl) {
switchPageBy(-axisValue.sign.toInt())
return true
}
}
}
return false
}
override fun onCreateAdapter() = ReversedPagesAdapter( override fun onCreateAdapter() = ReversedPagesAdapter(
lifecycleOwner = viewLifecycleOwner, lifecycleOwner = viewLifecycleOwner,
@ -113,65 +19,19 @@ class ReversedReaderFragment : BaseReaderFragment<FragmentReaderStandardBinding>
exceptionResolver = exceptionResolver, exceptionResolver = exceptionResolver,
) )
override fun onZoomIn() {
(viewBinding?.pager?.findCurrentViewHolder() as? PageHolder)?.onZoomIn()
}
override fun onZoomOut() {
(viewBinding?.pager?.findCurrentViewHolder() as? PageHolder)?.onZoomOut()
}
override fun switchPageBy(delta: Int) { override fun switchPageBy(delta: Int) {
with(requireViewBinding().pager) { super.switchPageBy(-delta)
setCurrentItem(currentItem - delta, isAnimationEnabled())
}
} }
override fun switchPageTo(position: Int, smooth: Boolean) { override fun switchPageTo(position: Int, smooth: Boolean) {
with(requireViewBinding().pager) { super.switchPageTo(reversed(position), smooth)
setCurrentItem(
reversed(position),
smooth && isAnimationEnabled() && (currentItem - position).absoluteValue < PagerReaderFragment.SMOOTH_SCROLL_LIMIT,
)
}
}
override suspend fun onPagesChanged(pages: List<ReaderPage>, pendingState: ReaderState?) = coroutineScope {
val reversedPages = pages.asReversed()
val items = launch {
requireAdapter().setItems(reversedPages)
yield()
pagerLifecycleDispatcher?.invalidate()
}
if (pendingState != null) {
val position = reversedPages.indexOfLast {
it.chapterId == pendingState.chapterId && it.index == pendingState.page
}
items.join()
if (position != -1) {
requireViewBinding().pager.setCurrentItem(position, false)
notifyPageChanged(position)
} else {
Snackbar.make(requireView(), R.string.not_found_404, Snackbar.LENGTH_SHORT)
.show()
}
} else {
items.join()
}
} }
override fun getCurrentState(): ReaderState? = viewBinding?.run { override suspend fun onPagesChanged(pages: List<ReaderPage>, pendingState: ReaderState?) {
val adapter = pager.adapter as? BaseReaderAdapter<*> super.onPagesChanged(pages.reversed(), pendingState)
val page = adapter?.getItemOrNull(pager.currentItem) ?: return@run null
ReaderState(
chapterId = page.chapterId,
page = page.index,
scroll = 0,
)
} }
private fun notifyPageChanged(page: Int) { override fun notifyPageChanged(page: Int) {
viewModel.onCurrentPageChanged(reversed(page)) viewModel.onCurrentPageChanged(reversed(page))
} }

@ -1,180 +1,7 @@
package org.koitharu.kotatsu.reader.ui.pager.standard package org.koitharu.kotatsu.reader.ui.pager.standard
import android.os.Build
import android.os.Bundle
import android.view.InputDevice
import android.view.KeyEvent
import android.view.LayoutInflater
import android.view.MotionEvent
import android.view.View
import android.view.ViewGroup
import androidx.core.view.children
import com.google.android.material.snackbar.Snackbar
import dagger.hilt.android.AndroidEntryPoint import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.coroutineScope import org.koitharu.kotatsu.reader.ui.pager.BasePagerReaderFragment
import kotlinx.coroutines.launch
import kotlinx.coroutines.yield
import org.koitharu.kotatsu.R
import org.koitharu.kotatsu.core.os.NetworkState
import org.koitharu.kotatsu.core.prefs.ReaderAnimation
import org.koitharu.kotatsu.core.ui.list.lifecycle.PagerLifecycleDispatcher
import org.koitharu.kotatsu.core.util.ext.doOnPageChanged
import org.koitharu.kotatsu.core.util.ext.findCurrentViewHolder
import org.koitharu.kotatsu.core.util.ext.observe
import org.koitharu.kotatsu.core.util.ext.recyclerView
import org.koitharu.kotatsu.core.util.ext.resetTransformations
import org.koitharu.kotatsu.databinding.FragmentReaderStandardBinding
import org.koitharu.kotatsu.reader.domain.PageLoader
import org.koitharu.kotatsu.reader.ui.ReaderState
import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
import org.koitharu.kotatsu.reader.ui.pager.BaseReaderFragment
import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
import javax.inject.Inject
import kotlin.math.absoluteValue
import kotlin.math.sign
@AndroidEntryPoint @AndroidEntryPoint
class PagerReaderFragment : BaseReaderFragment<FragmentReaderStandardBinding>(), class PagerReaderFragment : BasePagerReaderFragment()
View.OnGenericMotionListener {
@Inject
lateinit var networkState: NetworkState
@Inject
lateinit var pageLoader: PageLoader
private var pagerLifecycleDispatcher: PagerLifecycleDispatcher? = null
override fun onCreateViewBinding(
inflater: LayoutInflater,
container: ViewGroup?,
) = FragmentReaderStandardBinding.inflate(inflater, container, false)
override fun onViewBindingCreated(
binding: FragmentReaderStandardBinding,
savedInstanceState: Bundle?,
) {
super.onViewBindingCreated(binding, savedInstanceState)
with(binding.pager) {
adapter = readerAdapter
offscreenPageLimit = 2
doOnPageChanged(::notifyPageChanged)
setOnGenericMotionListener(this@PagerReaderFragment)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
recyclerView?.defaultFocusHighlightEnabled = false
}
PagerEventSupplier(this).attach()
pagerLifecycleDispatcher = PagerLifecycleDispatcher(this).also {
registerOnPageChangeCallback(it)
}
}
viewModel.pageAnimation.observe(viewLifecycleOwner) {
val transformer = when (it) {
ReaderAnimation.NONE -> NoAnimPageTransformer()
ReaderAnimation.DEFAULT -> null
ReaderAnimation.ADVANCED -> PageAnimTransformer()
}
binding.pager.setPageTransformer(transformer)
if (transformer == null) {
binding.pager.recyclerView?.children?.forEach { view ->
view.resetTransformations()
}
}
}
}
override fun onDestroyView() {
pagerLifecycleDispatcher = null
requireViewBinding().pager.adapter = null
super.onDestroyView()
}
override fun onZoomIn() {
(viewBinding?.pager?.findCurrentViewHolder() as? PageHolder)?.onZoomIn()
}
override fun onZoomOut() {
(viewBinding?.pager?.findCurrentViewHolder() as? PageHolder)?.onZoomOut()
}
override fun onGenericMotion(v: View?, event: MotionEvent): Boolean {
if (event.source and InputDevice.SOURCE_CLASS_POINTER != 0) {
if (event.actionMasked == MotionEvent.ACTION_SCROLL) {
val axisValue = event.getAxisValue(MotionEvent.AXIS_VSCROLL)
val withCtrl = event.metaState and KeyEvent.META_CTRL_MASK != 0
if (!withCtrl) {
switchPageBy(-axisValue.sign.toInt())
return true
}
}
}
return false
}
override suspend fun onPagesChanged(pages: List<ReaderPage>, pendingState: ReaderState?) =
coroutineScope {
val items = launch {
requireAdapter().setItems(pages)
yield()
pagerLifecycleDispatcher?.invalidate()
}
if (pendingState != null) {
val position = pages.indexOfFirst {
it.chapterId == pendingState.chapterId && it.index == pendingState.page
}
items.join()
if (position != -1) {
requireViewBinding().pager.setCurrentItem(position, false)
notifyPageChanged(position)
} else {
Snackbar.make(requireView(), R.string.not_found_404, Snackbar.LENGTH_SHORT)
.show()
}
} else {
items.join()
}
}
override fun onCreateAdapter() = PagesAdapter(
lifecycleOwner = viewLifecycleOwner,
loader = pageLoader,
settings = viewModel.readerSettings,
networkState = networkState,
exceptionResolver = exceptionResolver,
)
override fun switchPageBy(delta: Int) {
with(requireViewBinding().pager) {
setCurrentItem(currentItem + delta, isAnimationEnabled())
}
}
override fun switchPageTo(position: Int, smooth: Boolean) {
with(requireViewBinding().pager) {
setCurrentItem(
position,
smooth && isAnimationEnabled() && (currentItem - position).absoluteValue < SMOOTH_SCROLL_LIMIT,
)
}
}
override fun getCurrentState(): ReaderState? = viewBinding?.run {
val adapter = pager.adapter as? BaseReaderAdapter<*>
val page = adapter?.getItemOrNull(pager.currentItem) ?: return@run null
ReaderState(
chapterId = page.chapterId,
page = page.index,
scroll = 0,
)
}
private fun notifyPageChanged(page: Int) {
viewModel.onCurrentPageChanged(page)
}
companion object {
const val SMOOTH_SCROLL_LIMIT = 3
}
}

@ -1,186 +1,16 @@
package org.koitharu.kotatsu.reader.ui.pager.vertical package org.koitharu.kotatsu.reader.ui.pager.vertical
import android.os.Build
import android.os.Bundle
import android.view.InputDevice
import android.view.KeyEvent
import android.view.LayoutInflater
import android.view.MotionEvent
import android.view.View
import android.view.ViewGroup
import androidx.core.view.children
import androidx.viewpager2.widget.ViewPager2 import androidx.viewpager2.widget.ViewPager2
import com.google.android.material.snackbar.Snackbar
import dagger.hilt.android.AndroidEntryPoint import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.coroutineScope import org.koitharu.kotatsu.reader.ui.pager.BasePagerReaderFragment
import kotlinx.coroutines.launch
import kotlinx.coroutines.yield
import org.koitharu.kotatsu.R
import org.koitharu.kotatsu.core.os.NetworkState
import org.koitharu.kotatsu.core.prefs.ReaderAnimation
import org.koitharu.kotatsu.core.ui.list.lifecycle.PagerLifecycleDispatcher
import org.koitharu.kotatsu.core.util.ext.doOnPageChanged
import org.koitharu.kotatsu.core.util.ext.findCurrentViewHolder
import org.koitharu.kotatsu.core.util.ext.observe
import org.koitharu.kotatsu.core.util.ext.recyclerView
import org.koitharu.kotatsu.core.util.ext.resetTransformations
import org.koitharu.kotatsu.databinding.FragmentReaderStandardBinding
import org.koitharu.kotatsu.reader.domain.PageLoader
import org.koitharu.kotatsu.reader.ui.ReaderState
import org.koitharu.kotatsu.reader.ui.pager.BaseReaderAdapter
import org.koitharu.kotatsu.reader.ui.pager.BaseReaderFragment
import org.koitharu.kotatsu.reader.ui.pager.ReaderPage
import org.koitharu.kotatsu.reader.ui.pager.standard.NoAnimPageTransformer
import org.koitharu.kotatsu.reader.ui.pager.standard.PageHolder
import org.koitharu.kotatsu.reader.ui.pager.standard.PagerEventSupplier
import org.koitharu.kotatsu.reader.ui.pager.standard.PagesAdapter
import javax.inject.Inject
import kotlin.math.absoluteValue
import kotlin.math.sign
@AndroidEntryPoint @AndroidEntryPoint
class VerticalReaderFragment : BaseReaderFragment<FragmentReaderStandardBinding>(), class VerticalReaderFragment : BasePagerReaderFragment() {
View.OnGenericMotionListener {
@Inject override fun onInitPager(pager: ViewPager2) {
lateinit var networkState: NetworkState super.onInitPager(pager)
pager.orientation = ViewPager2.ORIENTATION_VERTICAL
@Inject
lateinit var pageLoader: PageLoader
private var pagerLifecycleDispatcher: PagerLifecycleDispatcher? = null
override fun onCreateViewBinding(
inflater: LayoutInflater,
container: ViewGroup?,
) = FragmentReaderStandardBinding.inflate(inflater, container, false)
override fun onViewBindingCreated(
binding: FragmentReaderStandardBinding,
savedInstanceState: Bundle?,
) {
super.onViewBindingCreated(binding, savedInstanceState)
with(binding.pager) {
orientation = ViewPager2.ORIENTATION_VERTICAL
adapter = readerAdapter
offscreenPageLimit = 2
doOnPageChanged(::notifyPageChanged)
setOnGenericMotionListener(this@VerticalReaderFragment)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
recyclerView?.defaultFocusHighlightEnabled = false
}
PagerEventSupplier(this).attach()
pagerLifecycleDispatcher = PagerLifecycleDispatcher(this).also {
registerOnPageChangeCallback(it)
}
}
viewModel.pageAnimation.observe(viewLifecycleOwner) {
val transformer = when (it) {
ReaderAnimation.NONE -> NoAnimPageTransformer()
ReaderAnimation.DEFAULT -> null
ReaderAnimation.ADVANCED -> VerticalPageAnimTransformer()
}
binding.pager.setPageTransformer(transformer)
if (transformer == null) {
binding.pager.recyclerView?.children?.forEach { view ->
view.resetTransformations()
}
}
}
}
override fun onDestroyView() {
pagerLifecycleDispatcher = null
requireViewBinding().pager.adapter = null
super.onDestroyView()
}
override fun onZoomIn() {
(viewBinding?.pager?.findCurrentViewHolder() as? PageHolder)?.onZoomIn()
}
override fun onZoomOut() {
(viewBinding?.pager?.findCurrentViewHolder() as? PageHolder)?.onZoomOut()
}
override fun onGenericMotion(v: View?, event: MotionEvent): Boolean {
if (event.source and InputDevice.SOURCE_CLASS_POINTER != 0) {
if (event.actionMasked == MotionEvent.ACTION_SCROLL) {
val axisValue = event.getAxisValue(MotionEvent.AXIS_VSCROLL)
val withCtrl = event.metaState and KeyEvent.META_CTRL_MASK != 0
if (!withCtrl) {
switchPageBy(-axisValue.sign.toInt())
return true
}
}
}
return false
} }
override suspend fun onPagesChanged(pages: List<ReaderPage>, pendingState: ReaderState?) = override fun onCreateAdvancedTransformer(): ViewPager2.PageTransformer = VerticalPageAnimTransformer()
coroutineScope {
val items = launch {
requireAdapter().setItems(pages)
yield()
pagerLifecycleDispatcher?.invalidate()
}
if (pendingState != null) {
val position = pages.indexOfFirst {
it.chapterId == pendingState.chapterId && it.index == pendingState.page
}
items.join()
if (position != -1) {
requireViewBinding().pager.setCurrentItem(position, false)
notifyPageChanged(position)
} else {
Snackbar.make(requireView(), R.string.not_found_404, Snackbar.LENGTH_SHORT)
.show()
}
} else {
items.join()
}
}
override fun onCreateAdapter() = PagesAdapter(
lifecycleOwner = viewLifecycleOwner,
loader = pageLoader,
settings = viewModel.readerSettings,
networkState = networkState,
exceptionResolver = exceptionResolver,
)
override fun switchPageBy(delta: Int) {
with(requireViewBinding().pager) {
setCurrentItem(currentItem + delta, isAnimationEnabled())
}
}
override fun switchPageTo(position: Int, smooth: Boolean) {
with(requireViewBinding().pager) {
setCurrentItem(
position,
smooth && isAnimationEnabled() && (currentItem - position).absoluteValue < SMOOTH_SCROLL_LIMIT,
)
}
}
override fun getCurrentState(): ReaderState? = viewBinding?.run {
val adapter = pager.adapter as? BaseReaderAdapter<*>
val page = adapter?.getItemOrNull(pager.currentItem) ?: return@run null
ReaderState(
chapterId = page.chapterId,
page = page.index,
scroll = 0,
)
}
private fun notifyPageChanged(page: Int) {
viewModel.onCurrentPageChanged(page)
}
companion object {
const val SMOOTH_SCROLL_LIMIT = 3
}
} }

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