Add behavior for modifying reader buttons depending on prev/next chapters (#5305)

(cherry picked from commit fdf178d4df5ca4819c972ca2730e86ef173beeca)

# Conflicts:
#	app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
This commit is contained in:
Hunter Nickel 2021-06-05 08:37:21 -06:00 committed by Jobobby04
parent 74636f4b1a
commit 13235f3a37

View File

@ -119,6 +119,9 @@ class ReaderActivity : BaseRxActivity<ReaderActivityBinding, ReaderPresenter>()
const val SHIFT_DOUBLE_PAGES = "shiftingDoublePages" const val SHIFT_DOUBLE_PAGES = "shiftingDoublePages"
const val SHIFTED_PAGE_INDEX = "shiftedPageIndex" const val SHIFTED_PAGE_INDEX = "shiftedPageIndex"
const val SHIFTED_CHAP_INDEX = "shiftedChapterIndex" const val SHIFTED_CHAP_INDEX = "shiftedChapterIndex"
private const val ENABLED_BUTTON_IMAGE_ALPHA = 255
private const val DISABLED_BUTTON_IMAGE_ALPHA = 64
} }
private val preferences: PreferencesHelper by injectLazy() private val preferences: PreferencesHelper by injectLazy()
@ -1078,7 +1081,8 @@ class ReaderActivity : BaseRxActivity<ReaderActivityBinding, ReaderPresenter>()
/** /**
* Called from the presenter whenever a new [viewerChapters] have been set. It delegates the * Called from the presenter whenever a new [viewerChapters] have been set. It delegates the
* method to the current viewer, but also set the subtitle on the toolbar. * method to the current viewer, but also set the subtitle on the toolbar, and
* hides or disables the reader prev/next buttons if there's a prev or next chapter
*/ */
fun setChapters(viewerChapters: ViewerChapters) { fun setChapters(viewerChapters: ViewerChapters) {
binding.pleaseWait.isVisible = false binding.pleaseWait.isVisible = false
@ -1104,6 +1108,20 @@ class ReaderActivity : BaseRxActivity<ReaderActivityBinding, ReaderPresenter>()
viewer?.setChapters(viewerChapters) viewer?.setChapters(viewerChapters)
binding.toolbar.subtitle = viewerChapters.currChapter.chapter.name binding.toolbar.subtitle = viewerChapters.currChapter.chapter.name
val leftChapterObject = if (viewer is R2LPagerViewer) viewerChapters.nextChapter else viewerChapters.prevChapter
val rightChapterObject = if (viewer is R2LPagerViewer) viewerChapters.prevChapter else viewerChapters.nextChapter
if (leftChapterObject == null && rightChapterObject == null) {
binding.leftChapter.isVisible = false
binding.rightChapter.isVisible = false
} else {
binding.leftChapter.isEnabled = leftChapterObject != null
binding.leftChapter.imageAlpha = if (leftChapterObject != null) ENABLED_BUTTON_IMAGE_ALPHA else DISABLED_BUTTON_IMAGE_ALPHA
binding.rightChapter.isEnabled = rightChapterObject != null
binding.rightChapter.imageAlpha = if (rightChapterObject != null) ENABLED_BUTTON_IMAGE_ALPHA else DISABLED_BUTTON_IMAGE_ALPHA
}
// Invalidate menu to show proper chapter bookmark state // Invalidate menu to show proper chapter bookmark state
invalidateOptionsMenu() invalidateOptionsMenu()
} }