Improve the responsiveness of the timebar preview

app/src/main/java/com/github/libretube/ui/extensions/SetupNotificationBell.kt

@@ -1,6 +1,5 @@
 package com.github.libretube.ui.extensions
 
-import android.util.Log
 import com.github.libretube.R
 import com.github.libretube.util.PreferenceHelper
 import com.google.android.material.button.MaterialButton

app/src/main/java/com/github/libretube/util/SeekbarPreviewListener.kt

@@ -17,29 +17,19 @@ class SeekbarPreviewListener(
 ) : TimeBar.OnScrubListener {
     private var moving = false
 
-    override fun onScrubStart(timeBar: TimeBar, position: Long) {}
+    override fun onScrubStart(timeBar: TimeBar, position: Long) {
+        moving = true
+
+        processPreview(position)
+    }
 
     /**
      * Show a preview of the scrubber position
      */
     override fun onScrubMove(timeBar: TimeBar, position: Long) {
         moving = true
-        val previewFrame = getPreviewFrame(position) ?: return
 
-        // update the offset of the preview image view
+        processPreview(position)
-        updatePreviewX(position)
-
-        val request = ImageRequest.Builder(previewIv.context)
-            .data(previewFrame.previewUrl)
-            .target {
-                if (!moving) return@target
-                val frame = cutOutBitmap(it.toBitmap(), previewFrame)
-                previewIv.setImageBitmap(frame)
-                previewIv.visibility = View.VISIBLE
-            }
-            .build()
-
-        ImageHelper.imageLoader.enqueue(request)
     }
 
     /**
@@ -60,6 +50,28 @@ class SeekbarPreviewListener(
             .start()
     }
 
+    /**
+     * Make a request to get the image frame and update its position
+     */
+    private fun processPreview(position: Long) {
+        val previewFrame = getPreviewFrame(position) ?: return
+
+        // update the offset of the preview image view
+        updatePreviewX(position)
+
+        val request = ImageRequest.Builder(previewIv.context)
+            .data(previewFrame.previewUrl)
+            .target {
+                if (!moving) return@target
+                val frame = cutOutBitmap(it.toBitmap(), previewFrame)
+                previewIv.setImageBitmap(frame)
+                previewIv.visibility = View.VISIBLE
+            }
+            .build()
+
+        ImageHelper.imageLoader.enqueue(request)
+    }
+
     /**
      * Get the preview frame according to the current position
      */