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@ -24,10 +24,15 @@ import androidx.transition.Fade
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import androidx.transition.Slide
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import androidx.transition.TransitionManager
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import androidx.transition.TransitionSet
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import androidx.window.layout.FoldingFeature
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import androidx.window.layout.WindowInfoTracker
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import android.content.res.Configuration
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import com.google.android.material.snackbar.Snackbar
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import dagger.hilt.android.AndroidEntryPoint
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.onEach
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import kotlinx.coroutines.flow.launchIn
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import kotlinx.coroutines.flow.combine
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import kotlinx.coroutines.flow.distinctUntilChanged
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import kotlinx.coroutines.flow.flowOn
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@ -109,6 +114,8 @@ class ReaderActivity :
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private var gestureInsets: Insets = Insets.NONE
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private lateinit var readerManager: ReaderManager
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private val hideUiRunnable = Runnable { setUiIsVisible(false) }
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// Tracks whether the foldable device is in an unfolded state (half-opened or flat)
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private var isFoldUnfolded: Boolean = false
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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@ -187,6 +194,25 @@ class ReaderActivity :
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viewBinding.zoomControl.isVisible = it
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}
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addMenuProvider(ReaderMenuProvider(viewModel))
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// Observe foldable window layout to auto-enable double-page if configured
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WindowInfoTracker.getOrCreate(this)
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.windowLayoutInfo(this)
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.onEach { info ->
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val fold = info.displayFeatures.filterIsInstance<FoldingFeature>().firstOrNull()
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val unfolded = when (fold?.state) {
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FoldingFeature.State.HALF_OPENED, FoldingFeature.State.FLAT -> true
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else -> false
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}
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if (unfolded != isFoldUnfolded) {
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isFoldUnfolded = unfolded
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applyDoubleModeAuto()
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}
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}
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.launchIn(lifecycleScope)
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// Apply initial double-mode considering foldable setting
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applyDoubleModeAuto()
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}
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override fun getParentActivityIntent(): Intent? {
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@ -341,7 +367,17 @@ class ReaderActivity :
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}
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override fun onDoubleModeChanged(isEnabled: Boolean) {
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readerManager.setDoubleReaderMode(isEnabled)
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// Combine manual toggle with foldable auto setting
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applyDoubleModeAuto(isEnabled)
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}
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private fun applyDoubleModeAuto(manualEnabled: Boolean? = null) {
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val isLandscape = resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
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// Auto double-page on foldable when device is unfolded (half-opened or flat)
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val autoFoldable = settings.isReaderDoubleOnFoldable && isFoldUnfolded
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val manualLandscape = (manualEnabled ?: settings.isReaderDoubleOnLandscape) && isLandscape
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val autoEnabled = autoFoldable || manualLandscape
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readerManager.setDoubleReaderMode(autoEnabled)
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}
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private fun setKeepScreenOn(isKeep: Boolean) {
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skepsun
