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Cleanup pager page change handling

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Jobobby04 2022-02-19 19:18:59 -05:00
parent 574dd17906
commit b1f7165ad7
1 changed files with 10 additions and 11 deletions
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21
app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerViewer.kt
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@ -176,15 +176,14 @@ abstract class PagerViewer(val activity: ReaderActivity) : BaseViewer {
/**
* Called when a new page (either a [ReaderPage] or [ChapterTransition]) is marked as active
*/
@Suppress("NAME_SHADOWING")
fun onPageChange(position: Int) {
val page = adapter.joinedItems.getOrNull(position)
if (page != null && currentPage != page.first) {
val allowPreload = checkAllowPreload(page.first as? ReaderPage)
val pagePair = adapter.joinedItems.getOrNull(position)
val page = pagePair?.first
if (page != null && currentPage != page) {
val allowPreload = checkAllowPreload(page as? ReaderPage)
val forward = when {
currentPage is ReaderPage && page.first is ReaderPage -> {
currentPage is ReaderPage && page is ReaderPage -> {
// if both pages have the same number, it's a split page with an InsertPage
val page = page.first as ReaderPage
if (page.number == (currentPage as ReaderPage).number) {
// the InsertPage is always the second in the reading direction
page is InsertPage
@ -192,14 +191,14 @@ abstract class PagerViewer(val activity: ReaderActivity) : BaseViewer {
page.number > (currentPage as ReaderPage).number
}
}
currentPage is ChapterTransition.Prev && page.first is ReaderPage ->
currentPage is ChapterTransition.Prev && page is ReaderPage ->
false
else -> true
}
currentPage = page.first
when (val aPage = page.first) {
is ReaderPage -> onReaderPageSelected(aPage, allowPreload, forward, page.second != null)
is ChapterTransition -> onTransitionSelected(aPage)
currentPage = page
when (page) {
is ReaderPage -> onReaderPageSelected(page, allowPreload, forward, pagePair.second != null)
is ChapterTransition -> onTransitionSelected(page)
}
}
}