basic double tap implementation

app/src/main/java/com/github/libretube/activities/Player.kt

@@ -1,15 +0,0 @@
-package com.github.libretube.activities
-
-import android.app.Activity
-import android.os.Bundle
-import com.github.libretube.R
-import com.google.android.material.color.DynamicColors
-
-class Player : Activity() {
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        DynamicColors.applyToActivityIfAvailable(this)
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_player)
-    }
-}

app/src/main/java/com/github/libretube/fragments/PlayerFragment.kt

@@ -54,6 +54,7 @@ import com.github.libretube.util.CronetHelper
 import com.github.libretube.util.DescriptionAdapter
 import com.github.libretube.util.RetrofitInstance
 import com.github.libretube.util.formatShort
+import com.github.libretube.views.DoubleClickListener
 import com.google.android.exoplayer2.C
 import com.google.android.exoplayer2.DefaultLoadControl
 import com.google.android.exoplayer2.ExoPlayer
@@ -319,10 +320,6 @@ class PlayerFragment : Fragment() {
             isFullScreen = !isFullScreen
 
             // scale the exo player center controls
-            playerBinding.exoFfwdWithAmount.scaleX = scaleFactor
-            playerBinding.exoFfwdWithAmount.scaleY = scaleFactor
-            playerBinding.exoRewWithAmount.scaleX = scaleFactor
-            playerBinding.exoRewWithAmount.scaleY = scaleFactor
             playerBinding.exoPlayPause.scaleX = scaleFactor
             playerBinding.exoPlayPause.scaleY = scaleFactor
         }
@@ -691,6 +688,8 @@ class PlayerFragment : Fragment() {
 
         playerBinding.exoTitle.text = response.title
 
+        enableDoubleTapToSeek()
+
         // init the chapters recyclerview
         if (response.chapters != null) initializeChapters(response.chapters)
 
@@ -844,6 +843,31 @@ class PlayerFragment : Fragment() {
         }
     }
 
+    private fun enableDoubleTapToSeek() {
+        val seekIncrement =
+            PreferenceHelper.getString(requireContext(), "seek_increment", "5")?.toLong()!! * 1000
+
+        playerBinding.rewindFL.setOnClickListener(
+            DoubleClickListener(
+                callback = object : DoubleClickListener.Callback {
+                    override fun doubleClicked() {
+                        exoPlayer.seekTo(exoPlayer.currentPosition - seekIncrement)
+                    }
+                }
+            )
+        )
+
+        playerBinding.forwardFL.setOnClickListener(
+            DoubleClickListener(
+                callback = object : DoubleClickListener.Callback {
+                    override fun doubleClicked() {
+                        exoPlayer.seekTo(exoPlayer.currentPosition + seekIncrement)
+                    }
+                }
+            )
+        )
+    }
+
     private fun initializeChapters(chapters: List<ChapterSegment>) {
         if (chapters.isNotEmpty()) {
             binding.chaptersRecView.layoutManager =
@@ -1064,8 +1088,6 @@ class PlayerFragment : Fragment() {
         val visibility = if (isLocked) View.VISIBLE else View.GONE
         playerBinding.exoTopBarRight.visibility = visibility
         playerBinding.exoPlayPause.visibility = visibility
-        playerBinding.exoFfwdWithAmount.visibility = visibility
-        playerBinding.exoRewWithAmount.visibility = visibility
         playerBinding.exoBottomBar.visibility = visibility
         playerBinding.closeImageButton.visibility = visibility
         playerBinding.exoTitle.visibility = visibility

app/src/main/java/com/github/libretube/views/DoubleClickListener.kt

@@ -0,0 +1,37 @@
+package com.github.libretube.views
+
+import android.view.View
+
+class DoubleClickListener(private val doubleClickTimeLimitMills: Long = 500, private val callback: Callback) : View.OnClickListener {
+    private var lastClicked: Long = -1L
+
+    override fun onClick(v: View?) {
+        lastClicked = when {
+            lastClicked == -1L -> {
+                System.currentTimeMillis()
+            }
+            isDoubleClicked() -> {
+                callback.doubleClicked()
+                -1L
+            }
+            else -> {
+                System.currentTimeMillis()
+            }
+        }
+    }
+
+    private fun getTimeDiff(from: Long, to: Long): Long {
+        return to - from
+    }
+
+    private fun isDoubleClicked(): Boolean {
+        return getTimeDiff(
+            lastClicked,
+            System.currentTimeMillis()
+        ) <= doubleClickTimeLimitMills
+    }
+
+    interface Callback {
+        fun doubleClicked()
+    }
+}

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

@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:background="@android:color/black"
-    tools:context=".activities.Player">
-
-    <com.github.libretube.views.CustomExoPlayerView
-        android:id="@+id/fullscreen_player"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:background="@android:color/black" />
-
-
-</RelativeLayout>

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

@@ -1,26 +1,7 @@
-<?xml version="1.0" encoding="utf-8"?><!-- Copyright 2020 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
+<?xml version="1.0" encoding="utf-8"?>
 <merge xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
-    <!-- 0dp dimensions are used to prevent this view from influencing the size of
-         the parent view if it uses "wrap_content". It is expanded to occupy the
-         entirety of the parent in code, after the parent's size has been
-         determined. See: https://github.com/google/ExoPlayer/issues/8726.
-    -->
-
     <View
         android:id="@id/exo_controls_background"
         android:layout_width="0dp"
@@ -231,42 +212,47 @@
         android:gravity="center"
         android:padding="@dimen/exo_styled_controls_padding">
 
-        <LinearLayout
-            android:layout_width="0dp"
+        <FrameLayout
+            android:id="@+id/rewindFL"
+            android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:orientation="vertical">
+            android:layout_weight="1">
 
-            <Button
-                android:id="@id/exo_rew_with_amount"
-                style="@style/ExoStyledControls.Button.Center.RewWithAmount"
-                android:layout_gravity="center"
-                android:layout_marginStart="20dp"
-                android:paddingLeft="4dp"
-                android:paddingRight="4dp" />
+            <ImageButton
+                android:id="@+id/rewindBTN"
+                android:layout_width="150dp"
+                android:layout_height="200dp"
+                android:layout_gravity="center_vertical"
+                android:background="?android:selectableItemBackground"
+                android:src="@drawable/ic_three_dots"
+                android:clickable="false"
+                app:tint="@android:color/white" />
 
-        </LinearLayout>
+        </FrameLayout>
 
         <ImageButton
             android:id="@id/exo_play_pause"
             style="@style/ExoStyledControls.Button.Center.PlayPause"
             app:tint="@android:color/white" />
 
-        <LinearLayout
-            android:layout_width="0dp"
+        <FrameLayout
+            android:id="@+id/forwardFL"
+            android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:layout_weight="1"
-            android:orientation="vertical">
+            android:layout_weight="1">
 
-            <Button
-                android:id="@id/exo_ffwd_with_amount"
-                style="@style/ExoStyledControls.Button.Center.FfwdWithAmount"
-                android:layout_gravity="center"
-                android:layout_marginEnd="20dp"
-                android:paddingLeft="4dp"
-                android:paddingRight="4dp" />
+            <ImageButton
+                android:id="@+id/forwardBTN"
+                android:layout_width="150dp"
+                android:layout_height="200dp"
+                android:layout_gravity="center_vertical|end"
+                android:background="?android:selectableItemBackground"
+                android:src="@drawable/ic_three_dots"
+                android:clickable="false"
+                app:tint="@android:color/white" />
+
+        </FrameLayout>
 
-        </LinearLayout>
 
     </LinearLayout>