From e803969433b56e7e6ef4b02ed01aaa2e410eb1f9 Mon Sep 17 00:00:00 2001
From: Allan Wang <me@allanwang.ca>
Date: Wed, 5 Jul 2017 23:30:09 -0700
Subject: Allow for sensitivity config

---
 .../ca/allanwang/kau/swipe/SwipeBackLayout.kt       |  7 +++++++
 .../kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt  |  1 +
 .../ca/allanwang/kau/swipe/ViewDragHelper.java      | 21 +++++++++++++++++++++
 .../allanwang/kau/swipe/ViewDragHelperExtras.java   |  6 ++++++
 4 files changed, 35 insertions(+)

diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt
index 48d7188..4473e23 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackLayout.kt
@@ -132,6 +132,12 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
             dragHelper.maxVelocity = value
         }
 
+    override var sensitivity: Float
+        get() = dragHelper.sensitivity
+        set(value) {
+            dragHelper.setSensitivity(context, value)
+        }
+
     init {
         dragHelper = ViewDragHelper.create(this, ViewDragCallback())
         val density = resources.displayMetrics.density
@@ -141,6 +147,7 @@ class SwipeBackLayout @JvmOverloads constructor(context: Context, attrs: Attribu
         minVelocity = minVel
 //        maxVelocity = 2.5f * minVel
         edgeFlag = edgeFlag
+        sensitivity = 0.3f
         addListener(chromeFadeListener)
     }
 
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt
index c4e637b..cb28342 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/SwipeBackPage.kt
@@ -59,6 +59,7 @@ interface SwipeBackContract {
     var disallowIntercept: Boolean
     var minVelocity: Float
     var maxVelocity: Float
+    var sensitivity:Float
     fun setEdgeSizePercent(swipeEdgePercent: Float)
     fun addListener(listener: SwipeListener)
     fun removeListener(listener: SwipeListener)
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java
index 6b34af3..c6ff116 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelper.java
@@ -384,6 +384,27 @@ public class ViewDragHelper implements ViewDragHelperExtras {
         mScroller = new OverScroller(context, sInterpolator);
     }
 
+    /**
+     * Sets the sensitivity of the dragger.
+     *
+     * @param context     The application context.
+     * @param sensitivity value between 0 and 1, the final value for touchSlop =
+     *                    ViewConfiguration.getScaledTouchSlop * (1 / s);
+     *                    1 is the default
+     */
+    @Override
+    public void setSensitivity(Context context, float sensitivity) {
+        float s = Math.max(0f, Math.min(1.0f, sensitivity));
+        ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
+        mTouchSlop = (int) (viewConfiguration.getScaledTouchSlop() * (1 / s));
+    }
+
+    @Override
+    public float getSensitivity() {
+        return mTouchSlop;
+    }
+
+
     /**
      * Set the minimum velocity that will be detected as having a magnitude greater than zero
      * in pixels per second. Callback methods accepting a velocity will be clamped appropriately.
diff --git a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java
index 2ee7ea3..a99310f 100644
--- a/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java
+++ b/core/src/main/kotlin/ca/allanwang/kau/swipe/ViewDragHelperExtras.java
@@ -1,5 +1,7 @@
 package ca.allanwang.kau.swipe;
 
+import android.content.Context;
+
 /**
  * Created by Allan Wang on 2017-07-05.
  * <p>
@@ -20,4 +22,8 @@ interface ViewDragHelperExtras {
 
     float getMaxVelocity();
 
+    void setSensitivity(Context context, float sensitivity);
+
+    float getSensitivity();
+
 }
-- 
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