Hide toolbar for favorites screen only

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/util/FadingAppbarHelper.kt

@@ -4,13 +4,19 @@ import android.view.View
 import com.google.android.material.appbar.AppBarLayout
 
 class FadingAppbarHelper(
+	private val appBarLayout: AppBarLayout,
 	private val target: View
 ) : AppBarLayout.OnOffsetChangedListener {
 
-	fun setup(appBarLayout: AppBarLayout) {
+	fun bind() {
 		appBarLayout.addOnOffsetChangedListener(this)
 	}
 
+	fun unBind() {
+		appBarLayout.removeOnOffsetChangedListener(this)
+		target.alpha = 1f
+	}
+
 	override fun onOffsetChanged(appBarLayout: AppBarLayout?, verticalOffset: Int) {
 		val scrollRange = appBarLayout?.totalScrollRange
 		if (scrollRange == null || scrollRange == 0) {

app/src/main/kotlin/org/koitharu/kotatsu/main/ui/MainActivity.kt

@@ -53,6 +53,7 @@ import org.koitharu.kotatsu.core.util.ext.scaleUpActivityOptionsOf
 import org.koitharu.kotatsu.databinding.ActivityMainBinding
 import org.koitharu.kotatsu.details.service.MangaPrefetchService
 import org.koitharu.kotatsu.details.ui.DetailsActivity
+import org.koitharu.kotatsu.favourites.ui.container.FavouritesContainerFragment
 import org.koitharu.kotatsu.history.ui.HistoryListFragment
 import org.koitharu.kotatsu.local.ui.LocalStorageCleanupWorker
 import org.koitharu.kotatsu.main.ui.owners.AppBarOwner
@@ -88,6 +89,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 	private val closeSearchCallback = CloseSearchCallback()
 	private lateinit var navigationDelegate: MainNavigationDelegate
 	private lateinit var appUpdateBadge: OptionsMenuBadgeHelper
+	private lateinit var fadingAppbarHelper: FadingAppbarHelper
 
 	override val appBar: AppBarLayout
 		get() = viewBinding.appbar
@@ -106,7 +108,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 
 		viewBinding.fab?.setOnClickListener(this)
 		viewBinding.navRail?.headerView?.setOnClickListener(this)
-		FadingAppbarHelper(viewBinding.toolbarCard).setup(viewBinding.appbar)
+		fadingAppbarHelper = FadingAppbarHelper(viewBinding.appbar, viewBinding.toolbarCard)
 
 		navigationDelegate = MainNavigationDelegate(
 			navBar = checkNotNull(bottomNav ?: viewBinding.navRail),
@@ -147,6 +149,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 
 	override fun onFragmentChanged(fragment: Fragment, fromUser: Boolean) {
 		adjustFabVisibility(topFragment = fragment)
+		adjustAppbar(topFragment = fragment)
 		if (fromUser) {
 			actionModeDelegate.finishActionMode()
 			closeSearchCallback.handleOnBackPressed()
@@ -349,6 +352,16 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 		}
 	}
 
+	private fun adjustAppbar(topFragment: Fragment) {
+		if (topFragment is FavouritesContainerFragment) {
+			viewBinding.appbar.fitsSystemWindows = true
+			fadingAppbarHelper.bind()
+		} else {
+			viewBinding.appbar.fitsSystemWindows = false
+			fadingAppbarHelper.unBind()
+		}
+	}
+
 	private fun adjustFabVisibility(
 		isResumeEnabled: Boolean = viewModel.isResumeEnabled.value,
 		topFragment: Fragment? = navigationDelegate.primaryFragment,
@@ -378,6 +391,9 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 		viewBinding.toolbarCard.updateLayoutParams<AppBarLayout.LayoutParams> {
 			scrollFlags = appBarScrollFlags
 		}
+		viewBinding.insetsHolder.updateLayoutParams<AppBarLayout.LayoutParams> {
+			scrollFlags = appBarScrollFlags
+		}
 		viewBinding.toolbarCard.background = if (isOpened) {
 			null
 		} else {

app/src/main/kotlin/org/koitharu/kotatsu/settings/sources/catalog/SourcesCatalogActivity.kt

@@ -58,7 +58,7 @@ class SourcesCatalogActivity : BaseActivity<ActivitySourcesCatalogBinding>(),
 			adapter = sourcesAdapter
 		}
 		viewBinding.chipsFilter.onChipClickListener = this
-		FadingAppbarHelper(viewBinding.toolbar).setup(appBar)
+		FadingAppbarHelper(viewBinding.appbar, viewBinding.toolbar).bind()
 		viewModel.content.observe(this, sourcesAdapter)
 		viewModel.onActionDone.observeEvent(
 			this,

app/src/main/res/layout-w600dp-land/activity_main.xml

@@ -37,8 +37,17 @@
 			android:paddingLeft="16dp"
 			android:paddingRight="16dp"
 			android:stateListAnimator="@null"
+			app:liftOnScrollColor="@null"
 			app:liftOnScroll="false">
 
+			<org.koitharu.kotatsu.core.ui.widgets.WindowInsetHolder
+				android:id="@+id/insetsHolder"
+				android:fitsSystemWindows="true"
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:layout_gravity="top"
+				app:layout_scrollFlags="scroll|enterAlways|snap" />
+
 			<FrameLayout
 				android:id="@+id/toolbar_card"
 				android:layout_width="match_parent"

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

@@ -19,11 +19,20 @@
 		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
 		android:clipToPadding="false"
-		android:fitsSystemWindows="true"
+		android:fitsSystemWindows="false"
 		android:paddingHorizontal="16dp"
 		android:stateListAnimator="@null"
+		app:liftOnScrollColor="@null"
 		app:liftOnScroll="false">
 
+		<org.koitharu.kotatsu.core.ui.widgets.WindowInsetHolder
+			android:id="@+id/insetsHolder"
+			android:fitsSystemWindows="true"
+			android:layout_width="match_parent"
+			android:layout_height="wrap_content"
+			android:layout_gravity="top"
+			app:layout_scrollFlags="scroll|enterAlways|snap" />
+
 		<FrameLayout
 			android:id="@+id/toolbar_card"
 			android:layout_width="match_parent"

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

@@ -12,6 +12,7 @@
 		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
 		android:fitsSystemWindows="true"
+		app:liftOnScrollColor="@null"
 		app:liftOnScroll="false">
 
 		<com.google.android.material.appbar.MaterialToolbar