bubble smooth mooving;

bubble show correct position onn startup

app/src/main/java/com/biganto/visual/roompark/presentation/screen/albums/ScreenController.kt

@@ -99,6 +99,8 @@ class AlbumsScreenController :
                     , resources?.getDimensionPixelSize(R.dimen.ceil_grid_padding))
             )
 
+
+
         bubble.setUpView(headersRecyclerView)
 
         albumsRecyclerView.isNestedScrollingEnabled = false
@@ -169,10 +171,11 @@ class AlbumsScreenController :
             viewState.list.asSequence().sortedByDescending { it.published }.toList()
         )
 
-        headersRecyclerView.let {
-            it.scrollToPosition(
-                (it.adapter as AlbumsHeaderAdapter).getItemPosition(viewState.selectedAlbumId)
-            )
+        (headersRecyclerView.adapter as AlbumsHeaderAdapter)
+            .getItemPosition(viewState.selectedAlbumId)
+            .let {
+                headersRecyclerView.smoothScrollToPosition(it)
+                bubble.onCurrentItemChanged(it)
             }
 
         viewState.list.first { it.albumId == viewState.selectedAlbumId }.let {
@@ -185,8 +188,10 @@ class AlbumsScreenController :
 
     private fun render(viewState: AlbumsScreenViewState.HeaderAlbumChoosed) {
         (headersRecyclerView.adapter as AlbumsHeaderAdapter)
-            .getItemPosition(viewState.item.albumId).let {
-            headersRecyclerView.scrollToPosition(it)
+            .getItemPosition(viewState.item.albumId)
+            .let {
+                headersRecyclerView.smoothScrollToPosition(it)
+                bubble.onCurrentItemChanged(it)
             }
 
         currentAlbomTitle.text = viewState.item.title
@@ -211,10 +216,11 @@ class AlbumsScreenController :
             viewState.restore.albumsPreview.asSequence().sortedByDescending { it.published }.toList()
         )
 
-        headersRecyclerView.let {
-            it.scrollToPosition(
-                (it.adapter as AlbumsHeaderAdapter).getItemPosition(viewState.restore.currentIndex)
-            )
+        (headersRecyclerView.adapter as AlbumsHeaderAdapter)
+            .getItemPosition(viewState.restore.currentIndex)
+            .let {
+                headersRecyclerView.smoothScrollToPosition(it)
+                bubble.onCurrentItemChanged(it)
             }
 
         viewState.restore.albumsPreview.first { it.albumId == viewState.restore.currentIndex }

app/src/main/java/com/biganto/visual/roompark/presentation/screen/albums/util/BubbleSlider.kt

 package com.biganto.visual.roompark.presentation.screen.albums.util
 
 import android.content.Context
-import android.graphics.Rect
 import android.graphics.SurfaceTexture
 import android.util.AttributeSet
 import android.view.TextureView
@@ -23,24 +22,22 @@ class BubbleSlider @JvmOverloads constructor(
 
     private var actualPosition = -1
 
-    private val actualRect = Rect()
+    private fun invalidatePosition(){
+        val child = recyclerView?.findViewHolderForAdapterPosition(actualPosition)
+        if (child == null) texThread?.setCenter(-9999)
+        else texThread?.setCenter(child.itemView.x.toInt()+child.itemView.width/ 2)
+    }
 
     fun setUpView(view:RecyclerView) {
         recyclerView = view
         recyclerView?.setOnScrollChangeListener { v, scrollX, scrollY, oldScrollX, oldScrollY ->
-            val child = recyclerView?.getChildAt(actualPosition)
-            child?.getDrawingRect(actualRect)
-            actualRect.let {
-                texThread?.setCenter(it.centerX())
+            invalidatePosition()
         }
     }
 
-
-    }
-
     fun onCurrentItemChanged(newPosition:Int){
-
         actualPosition = newPosition
+        invalidatePosition()
         texThread?.setIndex(actualPosition)
     }
 

app/src/main/java/com/biganto/visual/roompark/presentation/screen/albums/util/Renderer.kt

@@ -7,6 +7,7 @@ import android.graphics.*
 import android.view.Surface
 import com.biganto.visual.roompark.R
 import timber.log.Timber
+import kotlin.math.absoluteValue
 import kotlin.math.tan
 
 
@@ -14,7 +15,7 @@ import kotlin.math.tan
  * Created by Vladislav Bogdashkin on 18.07.2019.
  */
 
-private const val CONST_SLEEP_THRESHOLD = 8L
+private const val CONST_SLEEP_THRESHOLD = 6L
 private const val CONST_HEIGHT_MARGIN_BORDER_PX = 8
 private const val CONST_DECAY_TIMER = 500L
 
@@ -37,6 +38,7 @@ class RendererThread(val context: Context, val surface: SurfaceTexture)
     private var height = 0
 
     private var centerX = 0
+    private var destCenterX = 0
 
     private var holdIndex = 0
         get() = if (isDragging) field
@@ -59,15 +61,12 @@ class RendererThread(val context: Context, val surface: SurfaceTexture)
 
     fun setCenter(centerX:Int){
         this.centerX = centerX
+        Timber.w("CENTER IS: $centerX")
         isDirty = true
     }
 
-    private var scrollScaleFactor = 1f
-    private var touchOffset = 0f
-    private var scrollOffset = 0f
     private var isDragging = false
     private var slidePosition = 0f
-    private var dragKoef = 1f
 
     fun setSlidePosition(newPosition:Float){
         slidePosition = newPosition
@@ -79,57 +78,44 @@ class RendererThread(val context: Context, val surface: SurfaceTexture)
     private fun timerDecay(mills:Long){
         isDirty=true
         decayFraction+=mills
-        animateBorders()
-        scrollOffset = scrollOffset.smoothLerp(touchOffset-scrollOffset,.2f)
-        if (touchOffset> 0 && scrollOffset >= touchOffset) {
-            scrollOffset = touchOffset
-            isDirty=false
-        }
-        else if (touchOffset< 0 && scrollOffset <= touchOffset) {
-            scrollOffset = touchOffset
-            isDirty=false
-        }
+
         if (decayFraction> DECAY_TIMER) isDirty=false
-        val dirty = animateBorders()
+        val dirty = centerSmooth()
         if (!isDirty) isDirty = dirty
     }
 
-    private fun animateBorders():Boolean{
-        if (isDragging && dragKoef>0){
-            dragKoef = dragKoef.smoothLerp(-dragKoef,.12f)
-            if (dragKoef<.1f) dragKoef = 0f
-            return  dragKoef>0
-        }
-
-        if (!isDragging && dragKoef<1f) {
-            dragKoef = dragKoef.smoothLerp(1f-dragKoef,.03f)
-            if (dragKoef>.99f) dragKoef = 1f
-            return dragKoef<1f
-        }
-        return false
+    private fun centerSmooth():Boolean{
+            centerX = centerX.smoothLerp(destCenterX-centerX,decayFraction/DECAY_TIMER)
+            Timber.w("CENTER visa verse: $centerX -> $destCenterX")
+            return (centerX - destCenterX).absoluteValue>1
     }
 
     private fun Float.smoothLerp( delta: Float, fraction:Float =.4f): Float {
         return  this + fraction * (delta)
     }
 
+
+    private fun Int.smoothLerp( delta: Int, fraction:Float =.4f): Int {
+        return  (this + fraction * (delta)).int
+    }
+
     fun setSize(w: Int, h: Int){
         width=w
         height=h
     }
 
     private val pinColor:Int by lazy {
-        return@lazy context.resources.getColor(R.color.colorOpacityBackground)
+        context.resources.getColor(R.color.colorOpacityBackground,context.theme)
     }
 
     private val trianglePath:Path
     get() {
         val p = Path()
         p.fillType = Path.FillType.EVEN_ODD
-        p.moveTo(centerX.toFloat(),height.toFloat())
-        p.lineTo(centerX.toFloat() + height*tan(Math.toRadians(60.0)).toFloat(),height.toFloat())
-        p.lineTo(centerX.toFloat() - height*tan(Math.toRadians(60.0)).toFloat(),height.toFloat())
-        p.lineTo(centerX.toFloat(),height.toFloat())
+        p.moveTo(centerX.toFloat(),0f)
+        p.lineTo(centerX.toFloat() + height*tan(Math.toRadians(45.0)).toFloat(),height.toFloat())
+        p.lineTo(centerX.toFloat() - height*tan(Math.toRadians(45.0)).toFloat(),height.toFloat())
+        p.lineTo(centerX.toFloat(),0f)
         p.close()
         return p
     }
@@ -161,11 +147,10 @@ class RendererThread(val context: Context, val surface: SurfaceTexture)
                 , height
             )
             val c = surf.lockCanvas(dRect)
-            c.drawColor(Color.TRANSPARENT)
+            c.drawColor(Color.WHITE)
             c.drawPath(trianglePath,trianglePaint)
-            timerDecay(SLEEP_THRESHOLD)
-
-
+//            c.drawRect(Rect(centerX - 30,height,centerX+30,0),trianglePaint)
+//            timerDecay(SLEEP_THRESHOLD)
 
             surf.unlockCanvasAndPost(c)
             surf.release()

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

@@ -75,7 +75,7 @@
         app:layout_constraintVertical_bias="0.0"
         app:srcCompat="@drawable/iic_full_view"/>
 
-    <com.biganto.visual.roompark.presentation.screen.albums.util.PhotoPreviewSlider
+    <com.biganto.visual.roompark.presentation.screen.photo.util.PhotoPreviewSlider
         android:id="@+id/photosPreviewSlider"
         android:layout_width="0dp"
         android:layout_height="48dp"