tap between manga pages (paged)

app/src/main/java/ani/dantotsu/media/manga/mangareader/BaseImageAdapter.kt

@@ -89,7 +89,7 @@ abstract class BaseImageAdapter(
             }
         } else {
             val detector = GestureDetectorCompat(view.context, object : GesturesListener() {
-                override fun onSingleClick(event: MotionEvent) = activity.handleController()
+                override fun onSingleClick(event: MotionEvent) = activity.handleController(event = event)
             })
             view.findViewById<View>(R.id.imgProgCover).apply {
                 setOnTouchListener { _, event ->
@@ -112,6 +112,9 @@ abstract class BaseImageAdapter(
         activity.lifecycleScope.launch { loadImage(holder.bindingAdapterPosition, view) }
     }
 
+    abstract fun isZoomed(): Boolean
+    abstract fun setZoom(zoom: Float)
+
     abstract suspend fun loadImage(position: Int, parent: View): Boolean
 
     companion object {

app/src/main/java/ani/dantotsu/media/manga/mangareader/ImageAdapter.kt

@@ -91,4 +91,14 @@ open class ImageAdapter(
     }
 
     override fun getItemCount(): Int = images.size
+
+    override fun isZoomed(): Boolean {
+        val imageView = activity.findViewById<SubsamplingScaleImageView>(R.id.imgProgImageNoGestures)
+        return imageView.scale > imageView.minScale
+    }
+
+    override fun setZoom(zoom: Float) {
+        val imageView = activity.findViewById<SubsamplingScaleImageView>(R.id.imgProgImageNoGestures)
+        imageView.setScaleAndCenter(zoom, imageView.center)
+    }
 }

app/src/main/java/ani/dantotsu/media/manga/mangareader/MangaReaderActivity.kt

@@ -6,6 +6,7 @@ import android.app.AlertDialog
 import android.content.Context
 import android.content.Intent
 import android.content.res.Configuration
+import android.content.res.Resources
 import android.graphics.Bitmap
 import android.os.Build
 import android.os.Bundle
@@ -702,8 +703,60 @@ class MangaReaderActivity : AppCompatActivity() {
         goneTimer.schedule(timerTask, controllerDuration)
     }
 
-    fun handleController(shouldShow: Boolean? = null) {
+    enum class pressPos {
+        LEFT, RIGHT, CENTER
+    }
+
+    fun handleController(shouldShow: Boolean? = null, event: MotionEvent? = null) {
+        var pressLocation = pressPos.CENTER
         if (!sliding) {
+            if (event != null && settings.default.layout == PAGED) {
+                if (event.action != MotionEvent.ACTION_UP) return
+                val x = event.rawX.toInt()
+                val y = event.rawY.toInt()
+                val screenWidth = Resources.getSystem().displayMetrics.widthPixels
+                //if in the 1st 1/5th of the screen width, left and lower than 1/5th of the screen height, left
+                if (screenWidth / 5 in (x + 1)..<y) {
+                    pressLocation = if (settings.default.direction == RIGHT_TO_LEFT) {
+                        pressPos.RIGHT
+                    } else {
+                        pressPos.LEFT
+                    }
+                }
+                //if in the last 1/5th of the screen width, right and lower than 1/5th of the screen height, right
+                else if (x > screenWidth - screenWidth / 5 && y > screenWidth / 5) {
+                    pressLocation = if (settings.default.direction == RIGHT_TO_LEFT) {
+                        pressPos.LEFT
+                    } else {
+                        pressPos.RIGHT
+                    }
+                }
+            }
+
+            // if pressLocation is left or right go to previous or next page (paged mode only)
+            if (pressLocation == pressPos.LEFT) {
+
+                if (binding.mangaReaderPager.currentItem > 0) {
+                    //if  the current images zoomed in, go back to normal before going to previous page
+                    if (imageAdapter?.isZoomed() == true) {
+                        imageAdapter?.setZoom(1f)
+                    }
+                    binding.mangaReaderPager.currentItem -= 1
+                    return
+                }
+
+            } else if (pressLocation == pressPos.RIGHT) {
+                if (binding.mangaReaderPager.currentItem < maxChapterPage - 1) {
+                    //if  the current images zoomed in, go back to normal before going to next page
+                    if (imageAdapter?.isZoomed() == true) {
+                        imageAdapter?.setZoom(1f)
+                    }
+                    //if right to left, go to previous page
+                    binding.mangaReaderPager.currentItem += 1
+                    return
+                }
+            }
+
             if (!settings.showSystemBars) {
                 hideBars()
                 checkNotch()
@@ -796,7 +849,7 @@ class MangaReaderActivity : AppCompatActivity() {
 
     private fun progress(runnable: Runnable) {
         if (maxChapterPage - currentChapterPage <= 1 && Anilist.userid != null) {
-           if (showProgressDialog) {
+            if (showProgressDialog) {
 
                 val dialogView = layoutInflater.inflate(R.layout.item_custom_dialog, null)
                 val checkbox = dialogView.findViewById<CheckBox>(R.id.dialog_checkbox)
@@ -805,8 +858,9 @@ class MangaReaderActivity : AppCompatActivity() {
                     saveData("${media.id}_progressDialog", isChecked)
                     showProgressDialog = !isChecked
                 }
-               val incognito = currContext()?.getSharedPreferences("Dantotsu", Context.MODE_PRIVATE)
+                val incognito =
-                   ?.getBoolean("incognito", false) ?: false
+                    currContext()?.getSharedPreferences("Dantotsu", Context.MODE_PRIVATE)
+                        ?.getBoolean("incognito", false) ?: false
                 AlertDialog.Builder(this, R.style.MyPopup)
                     .setTitle(getString(R.string.title_update_progress))
                     .apply {
@@ -818,7 +872,7 @@ class MangaReaderActivity : AppCompatActivity() {
                     .setCancelable(false)
                     .setPositiveButton(getString(R.string.yes)) { dialog, _ ->
                         saveData("${media.id}_save_progress", true)
-                       updateProgress(
+                        updateProgress(
                             media,
                             MangaNameAdapter.findChapterNumber(media.manga!!.selectedChapter!!)
                                 .toString()

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

@@ -7,7 +7,7 @@
     app:gest_disableGestures="true"
     app:gest_rotationEnabled="true"
     app:gest_restrictRotation="true"
-    app:gest_doubleTapZoom="3"
+    app:gest_doubleTapZoom="1.5"
     app:gest_maxZoom="6">
 
     <FrameLayout