Add tooltips to manga info header action icons

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/MangaInfoHeaderAdapter.kt

@@ -20,6 +20,7 @@ import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.util.system.copyToClipboard
 import eu.kanade.tachiyomi.util.view.gone
 import eu.kanade.tachiyomi.util.view.setChips
+import eu.kanade.tachiyomi.util.view.setTooltip
 import eu.kanade.tachiyomi.util.view.visible
 import eu.kanade.tachiyomi.util.view.visibleIf
 import kotlinx.coroutines.CoroutineScope
@@ -89,17 +90,20 @@ class MangaInfoHeaderAdapter(
             binding.btnCategories.clicks()
                 .onEach { controller.onCategoriesClick() }
                 .launchIn(scope)
+            binding.btnCategories.setTooltip(R.string.action_move_category)
 
             if (controller.presenter.source is HttpSource) {
                 binding.btnWebview.visible()
-                binding.btnShare.visible()
-
                 binding.btnWebview.clicks()
                     .onEach { controller.openMangaInWebView() }
                     .launchIn(scope)
+                binding.btnWebview.setTooltip(R.string.action_open_in_web_view)
+
+                binding.btnShare.visible()
                 binding.btnShare.clicks()
                     .onEach { controller.shareManga() }
                     .launchIn(scope)
+                binding.btnShare.setTooltip(R.string.action_share)
             }
 
             binding.mangaFullTitle.longClicks()

app/src/main/java/eu/kanade/tachiyomi/util/view/ViewExtensions.kt

@@ -8,7 +8,9 @@ import android.view.Menu
 import android.view.MenuItem
 import android.view.View
 import androidx.annotation.MenuRes
+import androidx.annotation.StringRes
 import androidx.appcompat.widget.PopupMenu
+import androidx.appcompat.widget.TooltipCompat
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.chip.Chip
 import com.google.android.material.chip.ChipGroup
@@ -38,6 +40,15 @@ inline fun View.snack(message: String, length: Int = Snackbar.LENGTH_LONG, f: Sn
     return snack
 }
 
+/**
+ * Adds a tooltip shown on long press.
+ *
+ * @param stringRes String resource for tooltip.
+ */
+inline fun View.setTooltip(@StringRes stringRes: Int) {
+    TooltipCompat.setTooltipText(this, context.getString(stringRes))
+}
+
 /**
  * Shows a popup menu on top of this view.
  *