Editor actions fixes

app/src/main/kotlin/org/koitharu/kotatsu/reader/data/TapGridSettings.kt

@@ -1,6 +1,7 @@
 package org.koitharu.kotatsu.reader.data
 
 import android.content.Context
+import android.content.SharedPreferences
 import androidx.core.content.edit
 import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.Dispatchers
@@ -14,15 +15,17 @@ import javax.inject.Inject
 
 class TapGridSettings @Inject constructor(@ApplicationContext context: Context) {
 
-	private val prefs = context.getSharedPreferences("tap_grid", Context.MODE_PRIVATE)
+	private val prefs = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+
+	init {
+		if (!prefs.getBoolean(KEY_INIT, false)) {
+			reset()
+		}
+	}
 
 	fun getTapAction(area: TapGridArea, isLongTap: Boolean): TapAction? {
 		val key = getPrefKey(area, isLongTap)
-		return if (!isLongTap && key !in prefs) {
-			getDefaultTapAction(area)
-		} else {
-			prefs.getEnumValue(key, TapAction::class.java)
-		}
+		return prefs.getEnumValue(key, TapAction::class.java)
 	}
 
 	fun setTapAction(area: TapGridArea, isLongTap: Boolean, action: TapAction?) {
@@ -30,24 +33,41 @@ class TapGridSettings @Inject constructor(@ApplicationContext context: Context)
 		prefs.edit { putEnumValue(key, action) }
 	}
 
+	fun reset() {
+		prefs.edit {
+			clear()
+			initDefaultActions(this)
+			putBoolean(KEY_INIT, true)
+		}
+	}
+
 	fun observe() = prefs.observe().flowOn(Dispatchers.IO)
 
 	private fun getPrefKey(area: TapGridArea, isLongTap: Boolean): String = if (isLongTap) {
-		area.name + "_long"
+		area.name + SUFFIX_LONG
 	} else {
 		area.name
 	}
 
-	private fun getDefaultTapAction(area: TapGridArea): TapAction = when (area) {
-		TapGridArea.TOP_LEFT,
-		TapGridArea.TOP_CENTER,
-		TapGridArea.CENTER_LEFT,
-		TapGridArea.BOTTOM_LEFT -> TapAction.PAGE_PREV
-
-		TapGridArea.CENTER -> TapAction.TOGGLE_UI
-		TapGridArea.TOP_RIGHT,
-		TapGridArea.CENTER_RIGHT,
-		TapGridArea.BOTTOM_CENTER,
-		TapGridArea.BOTTOM_RIGHT -> TapAction.PAGE_NEXT
+	private fun initDefaultActions(editor: SharedPreferences.Editor) {
+		editor.putEnumValue(getPrefKey(TapGridArea.TOP_LEFT, false), TapAction.PAGE_PREV)
+		editor.putEnumValue(getPrefKey(TapGridArea.TOP_CENTER, false), TapAction.PAGE_PREV)
+		editor.putEnumValue(getPrefKey(TapGridArea.CENTER_LEFT, false), TapAction.PAGE_PREV)
+		editor.putEnumValue(getPrefKey(TapGridArea.BOTTOM_LEFT, false), TapAction.PAGE_PREV)
+
+		editor.putEnumValue(getPrefKey(TapGridArea.CENTER, false), TapAction.TOGGLE_UI)
+		editor.putEnumValue(getPrefKey(TapGridArea.CENTER, true), TapAction.SHOW_MENU)
+
+		editor.putEnumValue(getPrefKey(TapGridArea.TOP_RIGHT, false), TapAction.PAGE_NEXT)
+		editor.putEnumValue(getPrefKey(TapGridArea.CENTER_RIGHT, false), TapAction.PAGE_NEXT)
+		editor.putEnumValue(getPrefKey(TapGridArea.BOTTOM_CENTER, false), TapAction.PAGE_NEXT)
+		editor.putEnumValue(getPrefKey(TapGridArea.BOTTOM_RIGHT, false), TapAction.PAGE_NEXT)
+	}
+
+	private companion object {
+
+		private const val PREFS_NAME = "tap_grid"
+		private const val KEY_INIT = "_init"
+		private const val SUFFIX_LONG = "_long"
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/tapgrid/TapGridDispatcher.kt

@@ -35,6 +35,11 @@ class TapGridDispatcher(
 		return listener.onGridTouch(getArea(event.rawX, event.rawY))
 	}
 
+	override fun onDoubleTapEvent(e: MotionEvent): Boolean {
+		isDispatching = false // ignore long press after double tap
+		return super.onDoubleTapEvent(e)
+	}
+
 	override fun onLongPress(event: MotionEvent) {
 		if (isDispatching) {
 			listener.onGridLongTouch(getArea(event.rawX, event.rawY))

app/src/main/kotlin/org/koitharu/kotatsu/settings/reader/ReaderTapGridConfigActivity.kt

@@ -5,6 +5,8 @@ import android.graphics.drawable.ColorDrawable
 import android.graphics.drawable.Drawable
 import android.graphics.drawable.LayerDrawable
 import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
 import android.view.View
 import android.widget.TextView
 import androidx.core.graphics.ColorUtils
@@ -58,6 +60,22 @@ class ReaderTapGridConfigActivity : BaseActivity<ActivityReaderTapActionsBinding
 		tapGridSettings.observe().observe(this) { updateValues() }
 	}
 
+	override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+		menuInflater.inflate(R.menu.opt_tap_grid_config, menu)
+		return super.onCreateOptionsMenu(menu)
+	}
+
+	override fun onOptionsItemSelected(item: MenuItem): Boolean {
+		return when (item.itemId) {
+			R.id.action_reset -> {
+				confirmReset()
+				true
+			}
+
+			else -> super.onOptionsItemSelected(item)
+		}
+	}
+
 	override fun onWindowInsetsChanged(insets: Insets) {
 		viewBinding.root.updatePadding(
 			left = insets.left,
@@ -118,12 +136,21 @@ class ReaderTapGridConfigActivity : BaseActivity<ActivityReaderTapActionsBinding
 			.show()
 	}
 
+	private fun confirmReset() {
+		MaterialAlertDialogBuilder(this)
+			.setMessage(R.string.config_reset_confirm)
+			.setNegativeButton(android.R.string.cancel, null)
+			.setPositiveButton(R.string.reset) { _, _ ->
+				tapGridSettings.reset()
+			}.show()
+	}
+
 	private fun createBackground(action: TapAction?): Drawable? {
 		val ripple = getThemeDrawable(materialR.attr.selectableItemBackground)
 		return if (action == null) {
 			ripple
 		} else {
-			LayerDrawable(arrayOf(ripple, ColorDrawable(ColorUtils.setAlphaComponent(action.color, 60))))
+			LayerDrawable(arrayOf(ripple, ColorDrawable(ColorUtils.setAlphaComponent(action.color, 40))))
 		}
 	}
 }

app/src/main/res/menu/opt_tap_grid_config.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto">
+
+	<item
+		android:id="@+id/action_reset"
+		android:title="@string/reset"
+		app:showAsAction="never" />
+
+</menu>