update SlidePageDelegate

app/src/main/java/io/legado/app/ui/widget/page/delegate/CoverPageDelegate.kt

@@ -43,8 +43,7 @@ class CoverPageDelegate(pageView: PageView) : PageDelegate(pageView) {
             }
         }
 
-        scroller.startScroll(touchX.toInt(), 0, distanceX.toInt(), 0, getDuration(distanceX))
-        start()
+        startScroll(touchX.toInt(), 0, distanceX.toInt(), 0)
     }
 
     override fun onScrollStop() {

app/src/main/java/io/legado/app/ui/widget/page/delegate/PageDelegate.kt

@@ -6,6 +6,7 @@ import android.view.GestureDetector
 import android.view.MotionEvent
 import android.widget.Scroller
 import androidx.interpolator.view.animation.FastOutLinearInInterpolator
+import io.legado.app.service.ReadAloudService.Companion.stop
 import io.legado.app.ui.widget.page.ContentView
 import io.legado.app.ui.widget.page.PageView
 import io.legado.app.utils.screenshot
@@ -34,7 +35,7 @@ abstract class PageDelegate(protected val pageView: PageView) {
     protected var viewWidth: Int = pageView.width
     protected var viewHeight: Int = pageView.height
 
-    protected val scroller: Scroller by lazy { Scroller(pageView.context, FastOutLinearInInterpolator()) }
+    private val scroller: Scroller by lazy { Scroller(pageView.context, FastOutLinearInInterpolator()) }
 
     private val detector: GestureDetector by lazy { GestureDetector(pageView.context, GestureListener()) }
 
@@ -71,13 +72,14 @@ abstract class PageDelegate(protected val pageView: PageView) {
         pageView.invalidate()
     }
 
-    protected fun start() {
+    protected fun startScroll(startX: Int, startY: Int, dx: Int, dy: Int) {
+        scroller.startScroll(startX, startY, dx, dy, getDuration((if(dx !=0) dx else dy).toFloat()))
         isRunning = true
         isStarted = true
         invalidate()
     }
 
-    protected fun stop() {
+    protected fun stopScroll() {
         isRunning = false
         isStarted = false
         bitmap = null
@@ -101,7 +103,7 @@ abstract class PageDelegate(protected val pageView: PageView) {
         } else if (isStarted) {
             setTouchPoint(scroller.finalX.toFloat(), scroller.finalY.toFloat(), false)
             onScrollStop()
-            stop()
+            stopScroll()
         }
     }
 
@@ -162,14 +164,14 @@ abstract class PageDelegate(protected val pageView: PageView) {
     abstract fun onScrollStop()//scroller finish
 
     open fun onScroll() {//移动contentView， slidePage
-
     }
 
     enum class Direction {
         NONE, PREV, NEXT
     }
 
-    private inner class GestureListener : GestureDetector.OnGestureListener {
+
+    private inner class GestureListener : GestureDetector.SimpleOnGestureListener() {
 
         override fun onDown(e: MotionEvent): Boolean {
 //            abort()
@@ -188,8 +190,6 @@ abstract class PageDelegate(protected val pageView: PageView) {
             return true
         }
 
-        override fun onShowPress(e: MotionEvent) {}
-
         override fun onSingleTapUp(e: MotionEvent): Boolean {
             val x = e.x
             val y = e.y
@@ -253,14 +253,6 @@ abstract class PageDelegate(protected val pageView: PageView) {
             }
             return isMoved
         }
-
-        override fun onLongPress(e: MotionEvent) {
-
-        }
-
-        override fun onFling(e1: MotionEvent, e2: MotionEvent, velocityX: Float, velocityY: Float): Boolean {
-            return false
-        }
     }
 
     interface PageInterface {

app/src/main/java/io/legado/app/ui/widget/page/delegate/SimulationPageDelegate.kt

@@ -0,0 +1,15 @@
+package io.legado.app.ui.widget.page.delegate
+
+import android.graphics.Canvas
+import io.legado.app.ui.widget.page.PageView
+
+class SimulationPageDelegate(pageView: PageView) : PageDelegate(pageView) {
+    override fun onScrollStart() {
+    }
+
+    override fun onDraw(canvas: Canvas) {
+    }
+
+    override fun onScrollStop() {
+    }
+}

app/src/main/java/io/legado/app/ui/widget/page/delegate/SlidePageDelegate.kt

@@ -27,8 +27,7 @@ class SlidePageDelegate(pageView: PageView) : PageDelegate(pageView) {
             }
         }
 
-        scroller.startScroll(touchX.toInt(), 0, distanceX.toInt(), 0, getDuration(distanceX))
-        start()
+        startScroll(touchX.toInt(), 0, distanceX.toInt(), 0)
     }
 
     override fun onDraw(canvas: Canvas) {