Add option to disable track

recyclerviewfastscroller/src/main/java/com/qtalk/recyclerviewfastscroller/RecyclerViewFastScroller.kt

@@ -133,6 +133,7 @@ class RecyclerViewFastScroller @JvmOverloads constructor(
         const val hasEmptyItemDecorator: Boolean = true
         const val handleVisibilityDuration: Int = 0
         const val trackMargin: Int = 0
+        const val disableTrack = false
     }
 
     /**
@@ -214,6 +215,7 @@ class RecyclerViewFastScroller @JvmOverloads constructor(
             field = value
             refreshHandleImageViewSize()
         }
+    var disableTrack: Boolean = Defaults.disableTrack
 
     /**
      * The duration for which the handle should remain visible, defaults to -1 (don't hide)
@@ -364,6 +366,9 @@ class RecyclerViewFastScroller @JvmOverloads constructor(
                     Defaults.trackMargin
                 )
 
+            disableTrack =
+                    attribs.getBoolean(R.styleable.RecyclerViewFastScroller_disableTrack, Defaults.disableTrack)
+
             TextViewCompat.setTextAppearance(
                 popupTextView,
                 attribs.getResourceId(
@@ -409,6 +414,23 @@ class RecyclerViewFastScroller @JvmOverloads constructor(
 
                 when (touchAction) {
                     MotionEvent.ACTION_MOVE, MotionEvent.ACTION_DOWN -> {
+                        val handlePosition = IntArray(2).also {
+                            handleImageView.getLocationOnScreen(it)
+                        }
+                        if (disableTrack) {
+                            when (fastScrollDirection) {
+                                FastScrollDirection.HORIZONTAL -> {
+                                    val handleRange = handlePosition[0].toFloat() .. handlePosition[0]+handleLength
+                                    if (!handleRange.contains(motionEvent.rawX))
+                                        return@OnTouchListener false
+                                }
+                                FastScrollDirection.VERTICAL -> {
+                                    val handleRange = handlePosition[1].toFloat() .. handlePosition[1]+handleLength
+                                    if (!handleRange.contains(motionEvent.rawY))
+                                        return@OnTouchListener false
+                                }
+                            }
+                        }
 
                         // disallow parent to spy on touch events
                         requestDisallowInterceptTouchEvent(true)

recyclerviewfastscroller/src/main/res/values/attrs.xml

@@ -19,10 +19,12 @@
         <attr name="handleHeight" format="dimension" />
         <attr name="handleHasFixedSize" format="boolean" />
         <attr name="supportSwipeToRefresh" format="boolean" />
-
+      
         <attr name="trackMarginStart" format="dimension" />
         <attr name="trackMarginEnd" format="dimension" />
 
         <attr name="handleVisibilityDuration" format="integer" />
+
+        <attr name="disableTrack" format="boolean"/>
     </declare-styleable>
 </resources>