From 3ace1b96483ba883c5bce09e9bf10b73d1db4d0f Mon Sep 17 00:00:00 2001
From: tom5079 <tom5079@naver.com>
Date: Sun, 13 Sep 2020 10:23:34 +0900
Subject: [PATCH] Add option to disable track

---
 .../RecyclerViewFastScroller.kt               | 22 +++++++++++++++++++
 .../src/main/res/values/attrs.xml             |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/recyclerviewfastscroller/src/main/java/com/qtalk/recyclerviewfastscroller/RecyclerViewFastScroller.kt b/recyclerviewfastscroller/src/main/java/com/qtalk/recyclerviewfastscroller/RecyclerViewFastScroller.kt
index 750c8b8..298070e 100644
--- a/recyclerviewfastscroller/src/main/java/com/qtalk/recyclerviewfastscroller/RecyclerViewFastScroller.kt
+++ b/recyclerviewfastscroller/src/main/java/com/qtalk/recyclerviewfastscroller/RecyclerViewFastScroller.kt
@@ -125,6 +125,7 @@ class RecyclerViewFastScroller @JvmOverloads constructor(
         internal const val DEFAULT_POPUP_VISIBILITY_DURATION = 200L
         internal const val hasEmptyItemDecorator: Boolean = true
         internal const val trackMargin: Int = 0
+        internal const val disableTrack = false
     }
 
     /**
@@ -206,6 +207,7 @@ class RecyclerViewFastScroller @JvmOverloads constructor(
             field = value
             refreshHandleImageViewSize()
         }
+    var disableTrack: Boolean = Defaults.disableTrack
 
     // --- internal properties
     private var popupPosition: PopupPosition = Defaults.popupPosition
@@ -331,6 +333,9 @@ class RecyclerViewFastScroller @JvmOverloads constructor(
             trackMarginEnd =
                     attribs.getDimensionPixelSize(R.styleable.RecyclerViewFastScroller_trackMarginEnd, Defaults.trackMargin)
 
+            disableTrack =
+                    attribs.getBoolean(R.styleable.RecyclerViewFastScroller_disableTrack, Defaults.disableTrack)
+
             TextViewCompat.setTextAppearance(
                 popupTextView,
                 attribs.getResourceId(
@@ -376,6 +381,23 @@ 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)
diff --git a/recyclerviewfastscroller/src/main/res/values/attrs.xml b/recyclerviewfastscroller/src/main/res/values/attrs.xml
index b3e9f2f..7b220ac 100644
--- a/recyclerviewfastscroller/src/main/res/values/attrs.xml
+++ b/recyclerviewfastscroller/src/main/res/values/attrs.xml
@@ -22,5 +22,7 @@
 
         <attr name="trackMarginStart" format="dimension"/>
         <attr name="trackMarginEnd" format="dimension"/>
+
+        <attr name="disableTrack" format="boolean"/>
     </declare-styleable>
  </resources>
\ No newline at end of file