Add option to reverse tapping (#3360)

* Add option to reverse tapping

* Fix string for preference key

* Invert tapping for Webtoon and Vertical

* Use enum instead of boolean

* Add option to reader sheet

* Hide from reader sheet if tapping disabled and remove hard coded string

* Hide option if tapping disabled

app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferenceKeys.kt

@@ -55,6 +55,8 @@ object PreferenceKeys {
 
     const val readWithTapping = "reader_tap"
 
+    const val readWithTappingInverted = "reader_tapping_inverted"
+
     const val readWithLongTap = "reader_long_tap"
 
     const val readWithVolumeKeys = "reader_volume_keys"

app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferenceValues.kt

@@ -30,4 +30,11 @@ object PreferenceValues {
         COMFORTABLE_GRID,
         LIST,
     }
+
+    enum class TappingInvertMode {
+        NONE,
+        HORIZONTAL,
+        VERTICAL,
+        BOTH
+    }
 }

app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferencesHelper.kt

@@ -121,6 +121,8 @@ class PreferencesHelper(val context: Context) {
 
     fun readWithTapping() = flowPrefs.getBoolean(Keys.readWithTapping, true)
 
+    fun readWithTappingInverted() = flowPrefs.getEnum(Keys.readWithTappingInverted, Values.TappingInvertMode.NONE)
+
     fun readWithLongTap() = flowPrefs.getBoolean(Keys.readWithLongTap, true)
 
     fun readWithVolumeKeys() = flowPrefs.getBoolean(Keys.readWithVolumeKeys, false)