3.1.8 Bionic Reading

Author: LagradOst

app/build.gradle

@@ -14,8 +14,8 @@ android {
         applicationId "com.lagradost.quicknovel"
         minSdkVersion 21
         targetSdkVersion 34
-        versionCode 54
-        versionName "3.1.7"
+        versionCode 55
+        versionName "3.1.8"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 

app/src/main/java/com/lagradost/quicknovel/DataStore.kt

@@ -20,6 +20,7 @@ const val DOWNLOAD_NORMAL_SORTING_METHOD: String = "download_normal_sorting"
 const val DOWNLOAD_SETTINGS: String = "download_settings"
 const val EPUB_LOCK_ROTATION: String = "reader_epub_rotation"
 const val EPUB_TEXT_SIZE: String = "reader_epub_text_size"
+const val EPUB_TEXT_BIONIC: String = "reader_epub_bionic_reading"
 const val EPUB_SCROLL_VOL: String = "reader_epub_scroll_volume"
 const val EPUB_TTS_LOCK: String = "reader_epub_scroll_lock"
 const val EPUB_BG_COLOR: String = "reader_epub_bg_color"

app/src/main/java/com/lagradost/quicknovel/ReadActivity2.kt

@@ -553,7 +553,6 @@ class ReadActivity2 : AppCompatActivity(), ColorPickerDialogListener {
         config.setArgs(binding.loadingText, CONFIG_FONT or CONFIG_COLOR)
         config.setArgs(binding.readBattery, CONFIG_FONT or CONFIG_COLOR or CONFIG_FONT_BOLD)
         config.setArgs(binding.readTimeClock, CONFIG_FONT or CONFIG_COLOR or CONFIG_FONT_BOLD)
-
         config.setArgs(binding.readLoadingBar)
     }
 
@@ -715,7 +714,8 @@ class ReadActivity2 : AppCompatActivity(), ColorPickerDialogListener {
                 textColor = viewModel.textColor,
                 textSize = viewModel.textSize,
                 textFont = viewModel.textFont,
-                backgroundColor = viewModel.backgroundColor
+                backgroundColor = viewModel.backgroundColor,
+                bionicReading = viewModel.bionicReading
             ).also { config ->
                 updateOtherTextConfig(config)
             }
@@ -754,6 +754,12 @@ class ReadActivity2 : AppCompatActivity(), ColorPickerDialogListener {
             }
         }
 
+        observe(viewModel.bionicReadingLive) { color ->
+            if (textAdapter.changeBionicReading(color)) {
+                updateTextAdapterConfig()
+            }
+        }
+
         observe(viewModel.showBatteryLive) { show ->
             binding.readBattery.isVisible = show
             binding.readOverlay.isVisible = show && viewModel.showTime
@@ -1266,6 +1272,11 @@ class ReadActivity2 : AppCompatActivity(), ColorPickerDialogListener {
                     viewModel.scrollWithVolume = isChecked
                 }
 
+                readSettingsShowBionic.isChecked = viewModel.bionicReading
+                readSettingsShowBionic.setOnCheckedChangeListener { _, isChecked ->
+                    viewModel.bionicReading = isChecked
+                }
+
                 readSettingsLockTts.isChecked = viewModel.ttsLock
                 readSettingsLockTts.setOnCheckedChangeListener { _, isChecked ->
                     viewModel.ttsLock = isChecked

app/src/main/java/com/lagradost/quicknovel/ReadActivityViewModel.kt

@@ -1202,6 +1202,14 @@ class ReadActivityViewModel : ViewModel() {
         textSizeLive
     )
 
+    val bionicReadingLive: MutableLiveData<Boolean> = MutableLiveData(null)
+    var bionicReading by PreferenceDelegateLiveView(
+        EPUB_TEXT_BIONIC,
+        false,
+        Boolean::class,
+        bionicReadingLive
+    )
+
     val orientationLive: MutableLiveData<Int> = MutableLiveData(null)
     var orientation by PreferenceDelegateLiveView(
         EPUB_LOCK_ROTATION,

app/src/main/java/com/lagradost/quicknovel/TTSHelper.kt

@@ -4,6 +4,7 @@ import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.content.IntentFilter
+import android.graphics.Typeface
 import android.media.AudioAttributes
 import android.media.AudioFocusRequest
 import android.media.AudioManager
@@ -12,21 +13,26 @@ import android.speech.tts.TextToSpeech
 import android.speech.tts.UtteranceProgressListener
 import android.speech.tts.Voice
 import android.support.v4.media.session.MediaSessionCompat
+import android.text.Spannable
+import android.text.SpannableString
 import android.text.Spanned
+import android.text.style.StyleSpan
 import android.view.KeyEvent
 import androidx.media.session.MediaButtonReceiver
-import com.lagradost.quicknovel.ui.UiText
-import com.lagradost.quicknovel.ui.txt
 import com.lagradost.quicknovel.BaseApplication.Companion.removeKey
 import com.lagradost.quicknovel.BaseApplication.Companion.setKey
 import com.lagradost.quicknovel.mvvm.debugAssert
 import com.lagradost.quicknovel.receivers.BecomingNoisyReceiver
+import com.lagradost.quicknovel.ui.UiText
+import com.lagradost.quicknovel.ui.txt
 import com.lagradost.quicknovel.util.UIHelper.requestAudioFocus
 import io.noties.markwon.Markwon
 import kotlinx.coroutines.delay
 import org.jsoup.Jsoup
 import java.util.Locale
 import java.util.Stack
+import kotlin.math.roundToInt
+
 
 class TTSSession(val context: Context, event: (TTSHelper.TTSActionType) -> Boolean) {
     private val intentFilter = IntentFilter(AudioManager.ACTION_AUDIO_BECOMING_NOISY)
@@ -266,6 +272,30 @@ data class TextSpan(
     override val index: Int,
     override var innerIndex: Int,
 ) : SpanDisplay() {
+    val bionicText : Spanned by lazy {
+        val wordToSpan: Spannable = SpannableString(text)
+        val length = wordToSpan.length
+        Regex("([a-zà-ýA-ZÀ-ÝåäöÅÄÖ].*?)[^a-zà-ýA-ZÀ-ÝåäöÅÄÖ'’]").findAll(text).forEach { match ->
+            val range = match.groups[1]!!.range
+            // https://github.com/gBloxy/Bionic-Reader/blob/main/bionic-reader.py#L167
+            val correctLength = when (val rangeLength = range.last + 1 - range.first) {
+                0 -> return@forEach // this should never happened
+                1, 2, 3 -> 1
+                4 -> 2
+                else -> {
+                    (rangeLength.toFloat() * 0.4).roundToInt()
+                }
+            }
+            wordToSpan.setSpan(
+                StyleSpan(Typeface.BOLD),
+                minOf(maxOf(match.range.first, 0), length),
+                minOf(maxOf(match.range.first + correctLength, 0), length),
+                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
+            )
+        }
+
+        wordToSpan
+    }
     override fun id(): Long {
         return generateId(0, index, start, end)
     }

app/src/main/java/com/lagradost/quicknovel/ui/TextAdapter.kt

@@ -174,6 +174,7 @@ data class TextConfig(
     val textFont: String,
     val defaultFont: Typeface,
     val backgroundColor : Int,
+    val bionicReading : Boolean
 ) {
     private val fontFile: File? by lazy {
         if (textFont == "") null else systemFonts.firstOrNull { it.name == textFont }
@@ -251,6 +252,12 @@ class TextAdapter(private val viewModel: ReadActivityViewModel, var config: Text
         return true
     }
 
+    fun changeBionicReading(to : Boolean) : Boolean {
+        if (config.bionicReading == to) return false
+        config = config.copy(bionicReading = to)
+        return true
+    }
+
     fun changeColor(color: Int): Boolean {
         if (config.textColor == color) return false
         config = config.copy(textColor = color)
@@ -547,7 +554,7 @@ class TextAdapter(private val viewModel: ReadActivityViewModel, var config: Text
             UIHelper.bindImage(binding.root, img)
         }
 
-        private fun bindText(obj: TextSpan) {
+        private fun bindText(obj: TextSpan, config: TextConfig) {
             when (binding) {
                 is SingleImageBinding -> {
                     val img = obj.text.getSpans<AsyncDrawableSpan>(0, obj.text.length)[0]
@@ -586,7 +593,11 @@ class TextAdapter(private val viewModel: ReadActivityViewModel, var config: Text
                     binding.root.apply {
                         // this is set to fix the nonclick https://stackoverflow.com/questions/8641343/android-clickablespan-not-calling-onclick
                         movementMethod = LinkMovementMethod.getInstance()
-                        text = obj.text
+                        text = if (config.bionicReading) {
+                            obj.bionicText
+                        } else {
+                            obj.text
+                        }
 
                         //val links = obj.text.getSpans<io.noties.markwon.core.spans.LinkSpan>()
                         //if (links.isNotEmpty()) {
@@ -671,7 +682,7 @@ class TextAdapter(private val viewModel: ReadActivityViewModel, var config: Text
             span = obj
             when (obj) {
                 is TextSpan -> {
-                    this.bindText(obj)
+                    this.bindText(obj, config)
                     // because we bind text here we know that it will be cleared and thus
                     // we do not have to update it with null
                     if (ttsLine != null)

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

@@ -99,6 +99,17 @@
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content" />
 
+            <com.google.android.material.checkbox.MaterialCheckBox
+                    android:textSize="16sp"
+                    android:paddingStart="5dp"
+                    android:paddingEnd="5dp"
+                    android:text="@string/bionic_reading"
+                    android:id="@+id/read_settings_show_bionic"
+                    android:textColor="?attr/textColor"
+                    app:buttonTint="?attr/colorOnPrimary"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content" />
+
             <com.google.android.material.checkbox.MaterialCheckBox
                     android:textSize="16sp"
                     android:paddingStart="5dp"

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

@@ -207,4 +207,5 @@
     <string name="more_info">More Info</string>
     <string name="download_path_key">download_path_key</string>
     <string name="download_path_pref">Download path</string>
+    <string name="bionic_reading">Bionic Reading</string>
 </resources>