Fix unwanted touch events when chapters sheet is collapsed

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/widgets/TouchBlockLayout.kt

@@ -0,0 +1,22 @@
+package org.koitharu.kotatsu.core.ui.widgets
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.MotionEvent
+import android.widget.FrameLayout
+
+class TouchBlockLayout @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : FrameLayout(context, attrs) {
+
+    var isTouchEventsAllowed = true
+
+    override fun onInterceptTouchEvent(
+        ev: MotionEvent?
+    ): Boolean = if (isTouchEventsAllowed) {
+        super.onInterceptTouchEvent(ev)
+    } else {
+        true
+    }
+}

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/pager/ChaptersPagesSheet.kt

@@ -99,10 +99,11 @@ class ChaptersPagesSheet : BaseAdaptiveSheet<SheetChaptersPagesBinding>(),
 	override fun onApplyWindowInsets(v: View, insets: WindowInsetsCompat): WindowInsetsCompat = insets
 
 	override fun onStateChanged(sheet: View, newState: Int) {
+        val binding = viewBinding ?: return
+        binding.layoutTouchBlock.isTouchEventsAllowed = newState != STATE_COLLAPSED
         if (newState == STATE_DRAGGING || newState == STATE_SETTLING) {
             return
         }
-		val binding = viewBinding ?: return
 		val isActionModeStarted = actionModeDelegate?.isActionModeStarted == true
 		binding.toolbar.menuView?.isVisible = newState == STATE_EXPANDED && !isActionModeStarted
 		binding.splitButtonRead.isVisible = newState != STATE_EXPANDED && !isActionModeStarted

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

@@ -74,9 +74,15 @@
 
     </com.google.android.material.appbar.MaterialToolbar>
 
+    <org.koitharu.kotatsu.core.ui.widgets.TouchBlockLayout
+        android:id="@+id/layout_touchBlock"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
         <androidx.viewpager2.widget.ViewPager2
             android:id="@+id/pager"
             android:layout_width="match_parent"
             android:layout_height="match_parent" />
+    </org.koitharu.kotatsu.core.ui.widgets.TouchBlockLayout>
 
 </LinearLayout>