Optimize layout for tablet

app/src/main/java/org/koitharu/kotatsu/ui/common/BaseBottomSheet.kt

@@ -1,17 +1,27 @@
 package org.koitharu.kotatsu.ui.common
 
+import android.app.Dialog
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.annotation.LayoutRes
+import androidx.appcompat.app.AppCompatDialog
 import moxy.MvpBottomSheetDialogFragment
+import org.koitharu.kotatsu.utils.UiUtils
 
-abstract class BaseBottomSheet(@LayoutRes private val layoutResId: Int) : MvpBottomSheetDialogFragment() {
+abstract class BaseBottomSheet(@LayoutRes private val layoutResId: Int) :
+	MvpBottomSheetDialogFragment() {
 
 	override fun onCreateView(
 		inflater: LayoutInflater,
 		container: ViewGroup?,
 		savedInstanceState: Bundle?
 	): View? = inflater.inflate(layoutResId, container, false)
+
+	override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+		return if (UiUtils.isTablet(requireContext())) {
+			AppCompatDialog(context, theme)
+		} else super.onCreateDialog(savedInstanceState)
+	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsFragment.kt

@@ -14,6 +14,7 @@ import org.koitharu.kotatsu.ui.common.BaseFragment
 import org.koitharu.kotatsu.ui.main.list.favourites.categories.FavouriteCategoriesDialog
 import org.koitharu.kotatsu.ui.reader.ReaderActivity
 import org.koitharu.kotatsu.utils.ext.setChips
+import org.koitharu.kotatsu.utils.ext.textAndVisible
 import kotlin.math.roundToInt
 
 class MangaDetailsFragment : BaseFragment(R.layout.fragment_details), MangaDetailsView {
@@ -31,7 +32,7 @@ class MangaDetailsFragment : BaseFragment(R.layout.fragment_details), MangaDetai
 			crossfade(true)
 		}
 		textView_title.text = manga.title
-		textView_subtitle.text = manga.altTitle
+		textView_subtitle.textAndVisible = manga.altTitle
 		textView_description.text = manga.description?.parseAsHtml()?.takeUnless(Spanned::isBlank)
 			?: getString(R.string.no_description)
 		if (manga.rating == Manga.NO_RATING) {

app/src/main/java/org/koitharu/kotatsu/ui/main/list/MangaListFragment.kt

@@ -51,7 +51,7 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
-		drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
+		drawer?.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
 		adapter = MangaListAdapter(this)
 		initListMode(settings.listMode)
 		recyclerView.adapter = adapter
@@ -88,15 +88,15 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 			true
 		}
 		R.id.action_filter -> {
-			drawer.toggleDrawer(GravityCompat.END)
+			drawer?.toggleDrawer(GravityCompat.END)
 			true
 		}
 		else -> super.onOptionsItemSelected(item)
 	}
 
 	override fun onPrepareOptionsMenu(menu: Menu) {
-		menu.findItem(R.id.action_filter).isVisible =
-			drawer.getDrawerLockMode(GravityCompat.END) != DrawerLayout.LOCK_MODE_LOCKED_CLOSED
+		menu.findItem(R.id.action_filter).isVisible = drawer != null &&
+			drawer?.getDrawerLockMode(GravityCompat.END) != DrawerLayout.LOCK_MODE_LOCKED_CLOSED
 		super.onPrepareOptionsMenu(menu)
 	}
 
@@ -184,7 +184,7 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 		currentFilter: MangaFilter?
 	) {
 		recyclerView_filter.adapter = FilterAdapter(sortOrders, tags, currentFilter, this)
-		drawer.setDrawerLockMode(
+		drawer?.setDrawerLockMode(
 			if (sortOrders.isEmpty() && tags.isEmpty()) {
 				DrawerLayout.LOCK_MODE_LOCKED_CLOSED
 			} else {
@@ -196,7 +196,7 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 
 	@CallSuper
 	override fun onFilterChanged(filter: MangaFilter) {
-		drawer.closeDrawers()
+		drawer?.closeDrawers()
 	}
 
 	protected open fun setUpEmptyListHolder() {
@@ -210,6 +210,7 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 		recyclerView.adapter = null
 		recyclerView.layoutManager = null
 		recyclerView.clearItemDecorations()
+		recyclerView.removeOnLayoutChangeListener(UiUtils.SpanCountResolver)
 		adapter?.listMode = mode
 		recyclerView.layoutManager = when (mode) {
 			ListMode.GRID -> GridLayoutManager(ctx, UiUtils.resolveGridSpanCount(ctx))
@@ -225,6 +226,9 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 				)
 			}
 		)
+		if(mode == ListMode.GRID) {
+			recyclerView.addOnLayoutChangeListener(UiUtils.SpanCountResolver)
+		}
 		adapter?.notifyDataSetChanged()
 		recyclerView.firstItem = position
 	}

app/src/main/java/org/koitharu/kotatsu/ui/reader/thumbnails/PagesThumbnailsSheet.kt

@@ -4,7 +4,6 @@ import android.os.Bundle
 import android.view.View
 import androidx.core.view.isVisible
 import androidx.fragment.app.FragmentManager
-import androidx.recyclerview.widget.GridLayoutManager
 import com.google.android.material.bottomsheet.BottomSheetBehavior
 import com.google.android.material.bottomsheet.BottomSheetDialog
 import kotlinx.android.synthetic.main.sheet_pages.*
@@ -33,17 +32,22 @@ class PagesThumbnailsSheet : BaseBottomSheet(R.layout.sheet_pages),
 			dismissAllowingStateLoss()
 			return
 		}
-		(recyclerView.layoutManager as? GridLayoutManager)?.spanCount = UiUtils.resolveGridSpanCount(view.context)
 		val title = arguments?.getString(ARG_TITLE)
 		toolbar.title = title
 		toolbar.setNavigationOnClickListener { dismiss() }
 		toolbar.subtitle = resources.getQuantityString(R.plurals.pages, pages.size, pages.size)
 		textView_title.text = title
+		if (dialog !is BottomSheetDialog) {
+			toolbar.isVisible = true
+			textView_title.isVisible = false
+			appbar.elevation = resources.getDimension(R.dimen.elevation_large)
+		}
+		recyclerView.addOnLayoutChangeListener(UiUtils.SpanCountResolver)
 	}
 
 	override fun onCreateDialog(savedInstanceState: Bundle?) =
 		super.onCreateDialog(savedInstanceState).also {
-			val behavior = (it as BottomSheetDialog).behavior
+			val behavior = (it as? BottomSheetDialog)?.behavior ?: return@also
 			behavior.addBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
 				private val elevation = resources.getDimension(R.dimen.elevation_large)
 
@@ -52,15 +56,16 @@ class PagesThumbnailsSheet : BaseBottomSheet(R.layout.sheet_pages),
 				override fun onStateChanged(bottomSheet: View, newState: Int) {
 					if (newState == BottomSheetBehavior.STATE_EXPANDED) {
 						toolbar.isVisible = true
+						textView_title.isVisible = false
 						appbar.elevation = elevation
 					} else {
 						toolbar.isVisible = false
+						textView_title.isVisible = true
 						appbar.elevation = 0f
 					}
 				}
 			})
-//			behavior.peekHeight = BottomSheetBehavior.PEEK_HEIGHT_AUTO
-//			behavior.isFitToContents = false
+
 		}
 
 	override fun onDestroyView() {

app/src/main/java/org/koitharu/kotatsu/ui/settings/SettingsActivity.kt

@@ -3,22 +3,62 @@ package org.koitharu.kotatsu.ui.settings
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
+import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.commit
+import androidx.preference.Preference
+import androidx.preference.PreferenceFragmentCompat
+import kotlinx.android.synthetic.main.activity_settings.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.ui.common.BaseActivity
 
-class SettingsActivity : BaseActivity() {
+class SettingsActivity : BaseActivity(),
+	PreferenceFragmentCompat.OnPreferenceStartFragmentCallback {
 
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.activity_settings)
 		supportActionBar?.setDisplayHomeAsUpEnabled(true)
 
+		val isTablet = container_side != null
 		if (supportFragmentManager.findFragmentById(R.id.container) == null) {
-			supportFragmentManager.beginTransaction()
-				.replace(R.id.container, SettingsHeadersFragment())
-				.commit()
+			supportFragmentManager.commit {
+				if (isTablet) {
+					replace(R.id.container_side, SettingsHeadersFragment())
+					replace(R.id.container, AppearanceSettingsFragment())
+				} else {
+					replace(R.id.container, SettingsHeadersFragment())
+				}
+			}
+		}
+	}
+
+	override fun onPreferenceStartFragment(caller: PreferenceFragmentCompat, pref: Preference): Boolean {
+		val fm = supportFragmentManager
+		if (container_side != null && caller is SettingsHeadersFragment) {
+			fm.popBackStackImmediate(null, FragmentManager.POP_BACK_STACK_INCLUSIVE)
+		}
+		val fragment = fm.fragmentFactory.instantiate(classLoader, pref.fragment)
+		fragment.arguments = pref.extras
+		fragment.setTargetFragment(caller, 0)
+		fm.commit {
+			replace(R.id.container, fragment)
+			if (container_side == null || caller !is SettingsHeadersFragment) {
+				addToBackStack(null)
+			}
+		}
+		return true
+	}
+
+	override fun onTitleChanged(title: CharSequence?, color: Int) {
+		if (container_side == null) {
+			super.onTitleChanged(title, color)
+		} else {
+			if (supportFragmentManager.backStackEntryCount == 0) {
+				supportActionBar?.subtitle = null
+			} else {
+				supportActionBar?.subtitle = title
+			}
 		}
 	}
 

app/src/main/java/org/koitharu/kotatsu/ui/settings/SettingsHeadersFragment.kt

@@ -9,4 +9,5 @@ class SettingsHeadersFragment : BasePreferenceFragment(R.string.settings) {
 	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
 		addPreferencesFromResource(R.xml.pref_headers)
 	}
+
 }

app/src/main/java/org/koitharu/kotatsu/utils/UiUtils.kt

@@ -2,8 +2,12 @@ package org.koitharu.kotatsu.utils
 
 import android.content.Context
 import android.graphics.Color
+import android.view.View
 import androidx.annotation.ColorInt
+import androidx.recyclerview.widget.GridLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import org.koitharu.kotatsu.R
+import kotlin.math.abs
 import kotlin.math.roundToInt
 
 object UiUtils {
@@ -19,10 +23,31 @@ object UiUtils {
 	}
 
 	@JvmStatic
-	fun resolveGridSpanCount(context: Context): Int {
+	fun resolveGridSpanCount(context: Context, width: Int = 0): Int {
 		val cellWidth = context.resources.getDimensionPixelSize(R.dimen.preferred_grid_width)
-		val screenWidth = context.resources.displayMetrics.widthPixels.toDouble()
+		val screenWidth = (if (width <= 0) {
+			context.resources.displayMetrics.widthPixels
+		} else width).toDouble()
 		val estimatedCount = (screenWidth / cellWidth).roundToInt()
 		return estimatedCount.coerceAtLeast(2)
 	}
+
+	@JvmStatic
+	fun isTablet(context: Context) = context.resources.getBoolean(R.bool.is_tablet)
+
+	object SpanCountResolver : View.OnLayoutChangeListener {
+		override fun onLayoutChange(
+			v: View?, left: Int, top: Int, right: Int, bottom: Int,
+			oldLeft: Int, oldTop: Int, oldRight: Int, oldBottom: Int
+		) {
+			val rv = v as? RecyclerView ?: return
+			val width = abs(right - left)
+			if (width == 0) {
+				return
+			}
+			(rv.layoutManager as? GridLayoutManager)?.spanCount =
+				resolveGridSpanCount(rv.context, width)
+		}
+
+	}
 }

app/src/main/res/layout-sw600dp/activity_settings.xml

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	android:layout_width="match_parent"
+	android:layout_height="match_parent"
+	android:background="?attr/colorButtonNormal"
+	android:orientation="vertical">
+
+	<com.google.android.material.appbar.AppBarLayout
+		android:id="@+id/appbar"
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:layout_alignParentStart="true"
+		android:layout_alignParentTop="true"
+		android:layout_alignParentEnd="true"
+		android:background="?colorPrimary"
+		android:theme="@style/AppToolbarTheme">
+
+		<com.google.android.material.appbar.MaterialToolbar
+			android:id="@id/toolbar"
+			android:layout_width="match_parent"
+			android:layout_height="wrap_content"
+			app:layout_scrollFlags="scroll|enterAlways"
+			app:popupTheme="@style/AppPopupTheme" />
+
+	</com.google.android.material.appbar.AppBarLayout>
+
+	<androidx.fragment.app.FragmentContainerView
+		android:id="@+id/container_side"
+		android:layout_width="340dp"
+		android:layout_height="match_parent"
+		android:layout_below="@id/appbar"
+		android:layout_alignParentStart="true"
+		android:layout_alignParentBottom="true" />
+
+	<com.google.android.material.card.MaterialCardView
+		android:layout_width="wrap_content"
+		android:layout_height="wrap_content"
+		android:layout_below="@id/appbar"
+		android:layout_alignParentEnd="true"
+		android:layout_alignParentBottom="true"
+		android:layout_margin="16dp"
+		android:layout_toEndOf="@id/container_side"
+		app:cardBackgroundColor="?android:windowBackground">
+
+		<androidx.fragment.app.FragmentContainerView
+			android:id="@id/container"
+			android:layout_width="match_parent"
+			android:layout_height="match_parent" />
+
+	</com.google.android.material.card.MaterialCardView>
+
+</RelativeLayout>

app/src/main/res/layout-sw600dp/fragment_details.xml

@@ -0,0 +1,139 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.core.widget.NestedScrollView
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	xmlns:tools="http://schemas.android.com/tools"
+	android:layout_width="match_parent"
+	android:layout_height="wrap_content">
+
+	<androidx.constraintlayout.widget.ConstraintLayout
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content">
+
+		<ImageView
+			android:id="@+id/imageView_cover"
+			android:layout_width="0dp"
+			android:layout_height="0dp"
+			android:layout_marginStart="8dp"
+			android:layout_marginTop="8dp"
+			app:layout_constraintDimensionRatio="13:18"
+			app:layout_constraintStart_toStartOf="parent"
+			app:layout_constraintTop_toTopOf="parent"
+			app:layout_constraintWidth_percent="0.3" />
+
+		<TextView
+			android:id="@+id/textView_title"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:layout_marginStart="8dp"
+			android:layout_marginTop="8dp"
+			android:layout_marginEnd="8dp"
+			android:maxLines="3"
+			android:textAppearance="@style/TextAppearance.AppCompat.Body2"
+			android:textColor="?android:textColorPrimary"
+			app:layout_constraintEnd_toEndOf="parent"
+			app:layout_constraintStart_toEndOf="@id/imageView_cover"
+			app:layout_constraintTop_toTopOf="parent"
+			tools:text="@tools:sample/lorem[20]" />
+
+		<TextView
+			android:id="@+id/textView_subtitle"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:layout_marginTop="4dp"
+			android:maxLines="2"
+			android:textAppearance="@style/TextAppearance.AppCompat.Body1"
+			android:textColor="?android:textColorSecondary"
+			app:layout_constraintEnd_toEndOf="@id/textView_title"
+			app:layout_constraintStart_toStartOf="@id/textView_title"
+			app:layout_constraintTop_toBottomOf="@id/textView_title"
+			tools:text="@tools:sample/lorem[20]" />
+
+		<RatingBar
+			android:id="@+id/ratingBar"
+			style="@style/Widget.AppCompat.RatingBar.Small"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:layout_marginTop="10dp"
+			android:isIndicator="true"
+			android:max="100"
+			app:layout_constraintStart_toStartOf="@id/textView_title"
+			app:layout_constraintTop_toBottomOf="@id/textView_subtitle"
+			tools:progress="70" />
+
+		<com.google.android.material.button.MaterialButton
+			android:id="@+id/button_read"
+			style="@style/Widget.MaterialComponents.Button.OutlinedButton"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:layout_marginEnd="4dp"
+			android:enabled="false"
+			android:text="@string/read"
+			app:icon="@drawable/ic_read"
+			app:iconPadding="12dp"
+			app:layout_constraintEnd_toEndOf="@id/textView_title"
+			app:layout_constraintTop_toBottomOf="@id/ratingBar" />
+
+		<ImageView
+			android:id="@+id/imageView_favourite"
+			android:layout_width="0dp"
+			android:layout_height="0dp"
+			android:layout_marginEnd="4dp"
+			android:background="?selectableItemBackgroundBorderless"
+			android:contentDescription="@string/add_to_favourites"
+			android:scaleType="center"
+			android:src="@drawable/ic_tag_heart_outline"
+			app:layout_constraintBottom_toBottomOf="@id/button_read"
+			app:layout_constraintDimensionRatio="1:1"
+			app:layout_constraintEnd_toStartOf="@id/button_read"
+			app:layout_constraintTop_toTopOf="@id/button_read"
+			app:tint="?colorAccent" />
+
+		<View
+			android:id="@+id/divider_top"
+			android:layout_width="0dp"
+			android:layout_height="1dp"
+			android:layout_marginTop="8dp"
+			android:background="?android:listDivider"
+			app:layout_constraintEnd_toEndOf="parent"
+			app:layout_constraintStart_toEndOf="@id/imageView_cover"
+			app:layout_constraintTop_toBottomOf="@id/button_read" />
+
+		<com.google.android.material.chip.ChipGroup
+			android:id="@+id/chips_tags"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:layout_marginTop="4dp"
+			android:padding="6dp"
+			app:layout_constraintEnd_toEndOf="parent"
+			app:layout_constraintStart_toEndOf="@id/imageView_cover"
+			app:layout_constraintTop_toBottomOf="@id/divider_top" />
+
+		<TextView
+			android:id="@+id/textView_description"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:justificationMode="inter_word"
+			android:lineSpacingMultiplier="1.2"
+			android:padding="12dp"
+			app:layout_constraintEnd_toEndOf="parent"
+			app:layout_constraintStart_toEndOf="@id/imageView_cover"
+			app:layout_constraintTop_toBottomOf="@id/chips_tags"
+			tools:text="@tools:sample/lorem/random" />
+
+		<ProgressBar
+			android:id="@+id/progressBar"
+			style="@style/Widget.AppCompat.ProgressBar.Horizontal"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:indeterminate="true"
+			android:visibility="gone"
+			app:layout_constraintBottom_toBottomOf="@id/divider_top"
+			app:layout_constraintEnd_toEndOf="parent"
+			app:layout_constraintStart_toEndOf="@id/imageView_cover"
+			app:layout_constraintTop_toBottomOf="@id/divider_top"
+			tools:visibility="visible" />
+
+	</androidx.constraintlayout.widget.ConstraintLayout>
+
+</androidx.core.widget.NestedScrollView>

app/src/main/res/layout-sw600dp/fragment_list.xml

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	xmlns:tools="http://schemas.android.com/tools"
+	android:orientation="horizontal"
+	android:layout_width="match_parent"
+	android:layout_height="match_parent"
+	tools:openDrawer="end">
+
+	<FrameLayout
+		android:layout_width="0dp"
+		android:layout_weight="1"
+		android:layout_height="match_parent">
+
+		<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+			android:id="@+id/swipeRefreshLayout"
+			android:layout_width="match_parent"
+			android:layout_height="match_parent">
+
+			<androidx.recyclerview.widget.RecyclerView
+				android:id="@+id/recyclerView"
+				android:layout_width="match_parent"
+				android:layout_height="match_parent"
+				android:orientation="vertical"
+				android:scrollbars="vertical"
+				app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+				tools:listitem="@layout/item_manga_list" />
+
+		</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
+		<LinearLayout
+			android:id="@+id/layout_holder"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:layout_gravity="center"
+			android:layout_marginStart="20dp"
+			android:layout_marginEnd="20dp"
+			android:gravity="center_horizontal"
+			android:orientation="vertical">
+
+			<TextView
+				android:id="@+id/textView_holder"
+				android:layout_width="wrap_content"
+				android:layout_height="wrap_content"
+				android:layout_gravity="center"
+				android:gravity="center"
+				android:textColor="?android:textColorSecondary"
+				android:textAppearance="?android:textAppearanceMedium"
+				tools:text="@tools:sample/lorem[3]" />
+
+		</LinearLayout>
+
+		<ProgressBar
+			android:id="@+id/progressBar"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:layout_gravity="center"
+			android:indeterminate="true" />
+
+	</FrameLayout>
+
+	<View
+		android:layout_width="1dp"
+		android:layout_height="match_parent"
+		android:background="?dividerVertical" />
+
+	<androidx.recyclerview.widget.RecyclerView
+		android:id="@+id/recyclerView_filter"
+		android:layout_width="240dp"
+		android:layout_height="match_parent"
+		android:layout_gravity="end"
+		android:background="?android:windowBackground"
+		android:orientation="vertical"
+		android:scrollbars="vertical"
+		app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+		tools:listitem="@layout/item_category_checkable" />
+
+</LinearLayout>

app/src/main/res/layout/item_page.xml

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
-	android:layout_height="match_parent"
-	xmlns:tools="http://schemas.android.com/tools">
+	android:layout_height="match_parent">
 
 	<com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
 		android:id="@+id/ssiv"
@@ -17,31 +17,33 @@
 		android:layout_gravity="center" />
 
 	<LinearLayout
+		android:id="@+id/layout_error"
 		android:layout_width="wrap_content"
 		android:layout_height="wrap_content"
 		android:layout_gravity="center"
-		android:orientation="vertical"
 		android:layout_marginStart="60dp"
 		android:layout_marginEnd="60dp"
 		android:gravity="center_horizontal"
-		android:id="@+id/layout_error" >
+		android:orientation="vertical"
+		android:visibility="gone"
+		tools:visibility="visible">
 
 		<TextView
-			android:drawableTop="@drawable/ic_error_large"
 			android:id="@+id/textView_error"
 			android:layout_width="wrap_content"
-			tools:text="@tools:sample/lorem[6]"
+			android:layout_height="wrap_content"
+			android:drawableTop="@drawable/ic_error_large"
 			android:drawablePadding="12dp"
-			android:textAppearance="@style/TextAppearance.AppCompat.Small"
 			android:gravity="center_horizontal"
-			android:layout_height="wrap_content" />
+			android:textAppearance="@style/TextAppearance.AppCompat.Small"
+			tools:text="@tools:sample/lorem[6]" />
 
 		<com.google.android.material.button.MaterialButton
 			android:id="@+id/button_retry"
+			style="@style/Widget.MaterialComponents.Button.OutlinedButton"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
 			android:layout_marginTop="16dp"
-			style="@style/Widget.MaterialComponents.Button.OutlinedButton"
 			android:text="@string/try_again" />
 
 	</LinearLayout>

app/src/main/res/layout/item_page_thumb.xml

@@ -1,26 +1,28 @@
 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
-	android:layout_width="match_parent"
 	xmlns:tools="http://schemas.android.com/tools"
-	android:background="?attr/scrimBackground"
-	android:layout_height="wrap_content">
+	android:layout_width="match_parent"
+	android:layout_height="wrap_content"
+	android:background="?attr/scrimBackground">
 
 	<org.koitharu.kotatsu.ui.common.widgets.CoverImageView
 		android:id="@+id/imageView_thumb"
-		android:scaleType="centerCrop"
-		tools:src="@drawable/ic_placeholder"
 		android:layout_width="match_parent"
-		android:layout_height="wrap_content" />
+		android:layout_height="wrap_content"
+		android:scaleType="centerCrop"
+		tools:src="@drawable/ic_placeholder" />
 
 	<TextView
+		android:id="@+id/textView_number"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent"
-		tools:text="2"
-		android:textAppearance="@style/TextAppearance.MaterialComponents.Headline6"
-		android:padding="12dp"
-		android:gravity="end|bottom"
 		android:background="?android:selectableItemBackground"
-		android:id="@+id/textView_number" />
+		android:ellipsize="none"
+		android:gravity="end|bottom"
+		android:padding="12dp"
+		android:singleLine="true"
+		android:textAppearance="@style/TextAppearance.MaterialComponents.Headline6"
+		tools:text="2" />
 
 </FrameLayout>

app/src/main/res/values-sw600dp/bools.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+	<bool name="is_tablet">true</bool>
+</resources>

app/src/main/res/values/bools.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+	<bool name="is_tablet">false</bool>
+</resources>

app/src/main/res/xml/pref_headers.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen
-	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto">
+	xmlns:android="http://schemas.android.com/apk/res/android">
 
 	<PreferenceScreen
 		android:fragment="org.koitharu.kotatsu.ui.settings.AppearanceSettingsFragment"