Improving material design

app/src/main/java/code/name/monkey/retromusic/adapter/album/AlbumCoverPagerAdapter.kt

@@ -109,6 +109,7 @@ class AlbumCoverPagerAdapter(
                 NowPlayingScreen.FIT,
                 NowPlayingScreen.TINY,
                 NowPlayingScreen.CLASSIC,
+                NowPlayingScreen.MATERIAL,
                 NowPlayingScreen.FULL -> R.layout.fragment_album_full_cover
                 else -> {
                     if (PreferenceUtil.getInstance(requireContext())

app/src/main/java/code/name/monkey/retromusic/fragments/base/AbsPlayerControlsFragment.kt

@@ -62,11 +62,9 @@ abstract class AbsPlayerControlsFragment : AbsMusicServiceFragment(),
 
     private fun hideVolumeIfAvailable() {
         if (PreferenceUtil.getInstance(requireContext()).volumeToggle) {
-            childFragmentManager.beginTransaction()
+            childFragmentManager.beginTransaction().replace(R.id.volumeFragmentContainer, VolumeFragment()).commit()
-                .replace(R.id.volumeFragmentContainer, VolumeFragment()).commit()
             childFragmentManager.executePendingTransactions()
-            volumeFragment =
+            volumeFragment = childFragmentManager.findFragmentById(R.id.volumeFragmentContainer) as VolumeFragment?
-                childFragmentManager.findFragmentById(R.id.volumeFragmentContainer) as VolumeFragment?
         }
     }
 

app/src/main/java/code/name/monkey/retromusic/fragments/player/classic/ClassicPlayerFragment.kt

@@ -117,6 +117,11 @@ class ClassicPlayerFragment : AbsPlayerFragment(), View.OnLayoutChangeListener,
         }
     }
 
+    override fun onDestroyView() {
+        super.onDestroyView()
+        getQueuePanel().removeBottomSheetCallback(bottomSheetCallbackList)
+    }
+
     private fun updateSong() {
         val song = MusicPlayerRemote.currentSong
         title.text = song.title

app/src/main/java/code/name/monkey/retromusic/fragments/player/material/MaterialControlsFragment.kt

@@ -6,7 +6,6 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import code.name.monkey.appthemehelper.util.ATHUtil
-import code.name.monkey.appthemehelper.util.ColorUtil
 import code.name.monkey.appthemehelper.util.MaterialValueHelper
 import code.name.monkey.retromusic.R
 import code.name.monkey.retromusic.extensions.hide
@@ -99,24 +98,22 @@ class MaterialControlsFragment : AbsPlayerControlsFragment() {
     }
 
     override fun setDark(color: Int) {
-        val colorBg = ATHUtil.resolveColor(requireContext(), R.attr.colorSurface)
+        if (ATHUtil.isWindowBackgroundDark(requireContext())) {
-        if (ColorUtil.isColorLight(colorBg)) {
-            lastPlaybackControlsColor =
-                MaterialValueHelper.getSecondaryTextColor(requireContext(), true)
-            lastDisabledPlaybackControlsColor =
-                MaterialValueHelper.getSecondaryDisabledTextColor(requireContext(), true)
-        } else {
             lastPlaybackControlsColor =
                 MaterialValueHelper.getPrimaryTextColor(requireContext(), false)
             lastDisabledPlaybackControlsColor =
                 MaterialValueHelper.getPrimaryDisabledTextColor(requireContext(), false)
+        }else{
+            lastPlaybackControlsColor =
+                MaterialValueHelper.getSecondaryTextColor(requireContext(), true)
+            lastDisabledPlaybackControlsColor =
+                MaterialValueHelper.getSecondaryDisabledTextColor(requireContext(), true)
         }
-
         updateRepeatState()
         updateShuffleState()
 
         val colorFinal = if (PreferenceUtil.getInstance(requireContext()).adaptiveColor) {
-            color
+            lastPlaybackControlsColor
         } else {
             textColorSecondary(requireContext())
         }.ripAlpha()
@@ -126,12 +123,14 @@ class MaterialControlsFragment : AbsPlayerControlsFragment() {
 
         volumeFragment?.setTintable(colorFinal)
 
-        updatePlayPauseColor(colorFinal)
+        updateRepeatState()
-        updatePrevNextColor(colorFinal)
+        updateShuffleState()
+        updatePlayPauseColor()
+        updatePrevNextColor()
     }
 
-    private fun updatePlayPauseColor(color: Int) {
+    private fun updatePlayPauseColor() {
-        playPauseButton.setColorFilter(color, PorterDuff.Mode.SRC_IN)
+        playPauseButton.setColorFilter(lastPlaybackControlsColor, PorterDuff.Mode.SRC_IN)
     }
 
     private fun setUpPlayPauseFab() {
@@ -155,14 +154,14 @@ class MaterialControlsFragment : AbsPlayerControlsFragment() {
     }
 
     private fun setUpPrevNext() {
-        updatePrevNextColor(textColorSecondary(requireContext()))
+        updatePrevNextColor()
         nextButton.setOnClickListener { MusicPlayerRemote.playNextSong() }
         previousButton.setOnClickListener { MusicPlayerRemote.back() }
     }
 
-    private fun updatePrevNextColor(color: Int) {
+    private fun updatePrevNextColor() {
-        nextButton.setColorFilter(color, PorterDuff.Mode.SRC_IN)
+        nextButton.setColorFilter(lastPlaybackControlsColor, PorterDuff.Mode.SRC_IN)
-        previousButton.setColorFilter(color, PorterDuff.Mode.SRC_IN)
+        previousButton.setColorFilter(lastPlaybackControlsColor, PorterDuff.Mode.SRC_IN)
     }
 
     private fun setUpShuffleButton() {

app/src/main/java/code/name/monkey/retromusic/fragments/player/material/MaterialFragment.kt

@@ -4,22 +4,57 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.FrameLayout
+import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.Toolbar
+import androidx.core.view.ViewCompat
+import androidx.recyclerview.widget.LinearLayoutManager
 import code.name.monkey.appthemehelper.util.ATHUtil
+import code.name.monkey.appthemehelper.util.ColorUtil
 import code.name.monkey.appthemehelper.util.ToolbarContentTintHelper
+import code.name.monkey.retromusic.CustomBottomSheetBehavior
 import code.name.monkey.retromusic.R
+import code.name.monkey.retromusic.activities.base.AbsSlidingMusicPanelActivity
+import code.name.monkey.retromusic.adapter.song.PlayingQueueAdapter
 import code.name.monkey.retromusic.fragments.base.AbsPlayerFragment
 import code.name.monkey.retromusic.fragments.player.PlayerAlbumCoverFragment
 import code.name.monkey.retromusic.fragments.player.normal.PlayerFragment
 import code.name.monkey.retromusic.helper.MusicPlayerRemote
 import code.name.monkey.retromusic.model.Song
 import code.name.monkey.retromusic.util.color.MediaNotificationProcessor
+import com.google.android.material.bottomsheet.BottomSheetBehavior
 import kotlinx.android.synthetic.main.fragment_material.*
+import kotlinx.android.synthetic.main.status_bar.*
 
 /**
  * @author Hemanth S (h4h13).
  */
-class MaterialFragment : AbsPlayerFragment() {
+class MaterialFragment : AbsPlayerFragment(), View.OnLayoutChangeListener {
+    private lateinit var queueAdapter: PlayingQueueAdapter
+    private val bottomSheetCallbackList = object : BottomSheetBehavior.BottomSheetCallback() {
+        override fun onSlide(bottomSheet: View, slideOffset: Float) {
+            (requireActivity() as AbsSlidingMusicPanelActivity).getBottomSheetBehavior()
+                .setAllowDragging(false)
+
+            sheetContent.setPadding(
+                sheetContent.paddingLeft,
+                (slideOffset * status_bar.height).toInt(),
+                sheetContent.paddingRight,
+                sheetContent.paddingBottom
+            )
+
+            playerControlsContainer.layoutParams.height = playerContainer.width
+        }
+
+        override fun onStateChanged(bottomSheet: View, newState: Int) {
+            val activity = requireActivity() as AbsSlidingMusicPanelActivity
+            if (newState == BottomSheetBehavior.STATE_EXPANDED || newState == BottomSheetBehavior.STATE_DRAGGING) {
+                activity.getBottomSheetBehavior().setAllowDragging(false)
+            } else {
+                activity.getBottomSheetBehavior().setAllowDragging(true)
+            }
+        }
+    }
 
     override fun playerToolbar(): Toolbar {
         return playerToolbar
@@ -50,6 +85,9 @@ class MaterialFragment : AbsPlayerFragment() {
     }
 
     override fun onColorChanged(color: MediaNotificationProcessor) {
+        val darkColor = ColorUtil.darkenColorTheme(color.backgroundColor)
+        playerContainer?.setBackgroundColor(ColorUtil.darkenColorTheme(color.backgroundColor))
+        upComing?.setBackgroundColor(ColorUtil.darkenColorTheme(darkColor))
         playbackControlsFragment.setDark(color.backgroundColor)
         lastColor = color.backgroundColor
         callbacks?.onPaletteColorChanged()
@@ -83,6 +121,40 @@ class MaterialFragment : AbsPlayerFragment() {
         super.onViewCreated(view, savedInstanceState)
         setUpSubFragments()
         setUpPlayerToolbar()
+        setupPanel()
+        setUpQueue()
+        getQueuePanel().addBottomSheetCallback(bottomSheetCallbackList)
+
+        playerQueueSheet.setOnTouchListener { _, _ ->
+            (requireActivity() as AbsSlidingMusicPanelActivity).getBottomSheetBehavior()
+                .setAllowDragging(false)
+            getQueuePanel().setAllowDragging(true)
+            return@setOnTouchListener false
+        }
+    }
+
+    private fun setUpQueue() {
+        queueAdapter = PlayingQueueAdapter(
+            requireActivity() as AppCompatActivity, mutableListOf(),
+            MusicPlayerRemote.position,
+            R.layout.item_queue
+        )
+        recyclerView.apply {
+            adapter = queueAdapter
+            layoutManager = LinearLayoutManager(requireContext())
+        }
+    }
+
+    private fun setupPanel() {
+        if (!ViewCompat.isLaidOut(playerContainer) || playerContainer.isLayoutRequested) {
+            playerContainer.addOnLayoutChangeListener(this)
+            return
+        }
+        val height = playerContainer?.height ?: 0
+        val width = playerContainer?.width ?: 0
+        val finalHeight = height - (playerControlsContainer.height - width)
+        val panel = getQueuePanel()
+        panel.peekHeight = finalHeight
     }
 
     private fun setUpSubFragments() {
@@ -108,6 +180,7 @@ class MaterialFragment : AbsPlayerFragment() {
 
     override fun onServiceConnected() {
         updateIsFavorite()
+        queueAdapter.swapDataSet(MusicPlayerRemote.playingQueue)
     }
 
     override fun onPlayingMetaChanged() {
@@ -120,4 +193,32 @@ class MaterialFragment : AbsPlayerFragment() {
             return PlayerFragment()
         }
     }
+
+    private fun getQueuePanel(): CustomBottomSheetBehavior<FrameLayout> {
+        return CustomBottomSheetBehavior.from(playerQueueSheet) as CustomBottomSheetBehavior<FrameLayout>
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        getQueuePanel().removeBottomSheetCallback(bottomSheetCallbackList)
+    }
+
+    override fun onLayoutChange(
+        v: View?,
+        left: Int,
+        top: Int,
+        right: Int,
+        bottom: Int,
+        oldLeft: Int,
+        oldTop: Int,
+        oldRight: Int,
+        oldBottom: Int
+    ) {
+        val height = playerContainer?.height ?: 0
+        val width = playerContainer?.width ?: 0
+        val finalHeight = height - width
+        playerControlsContainer.layoutParams.height = height - width
+        val panel = getQueuePanel()
+        panel.peekHeight = finalHeight
+    }
 }

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

@@ -5,7 +5,7 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <LinearLayout
+    <FrameLayout
         android:id="@+id/playerContainer"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
@@ -43,7 +43,7 @@
                     app:navigationIcon="@drawable/ic_keyboard_arrow_down_black_24dp" />
             </LinearLayout>
         </code.name.monkey.retromusic.views.WidthFitSquareLayout>
-    </LinearLayout>
+    </FrameLayout>
 
     <com.google.android.material.card.MaterialCardView
         android:id="@+id/playerQueueSheet"
@@ -51,7 +51,6 @@
         android:layout_height="wrap_content"
         android:gravity="bottom"
         android:orientation="vertical"
-        android:tag="nested_bottom_sheet"
         app:behavior_hideable="false"
         app:cardCornerRadius="0dp"
         app:layout_behavior="code.name.monkey.retromusic.CustomBottomSheetBehavior">
@@ -92,7 +91,6 @@
                     android:background="?attr/colorSurface"
                     tools:listitem="@layout/item_list" />
             </LinearLayout>
-
         </LinearLayout>
     </com.google.android.material.card.MaterialCardView>
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

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

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
@@ -7,25 +7,14 @@
     android:clickable="true"
     android:focusable="true">
 
-    <View
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:background="?attr/colorSurface" />
-
     <include layout="@layout/shadow_statusbar_toolbar" />
 
     <LinearLayout
+        android:id="@+id/playerContainer"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:orientation="vertical">
 
-        <FrameLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-
-            <include layout="@layout/status_bar" />
-        </FrameLayout>
-
         <code.name.monkey.retromusic.views.WidthFitSquareLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content">
@@ -35,20 +24,13 @@
                 android:name="code.name.monkey.retromusic.fragments.player.PlayerAlbumCoverFragment"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
-                tools:layout="@layout/fragment_album_cover" />
+                tools:layout="@layout/fragment_album_full_cover" />
-        </code.name.monkey.retromusic.views.WidthFitSquareLayout>
 
             <FrameLayout
                 android:layout_width="match_parent"
-            android:layout_height="match_parent"
+                android:layout_height="wrap_content">
-            android:layout_weight="1">
 
-            <fragment
+                <include layout="@layout/status_bar" />
-                android:id="@+id/playbackControlsFragment"
-                android:name="code.name.monkey.retromusic.fragments.player.material.MaterialControlsFragment"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                tools:layout="@layout/fragment_material_playback_controls" />
             </FrameLayout>
 
             <FrameLayout
@@ -63,5 +45,80 @@
                     android:navigationIcon="@drawable/ic_keyboard_arrow_down_black_24dp"
                     app:navigationIcon="@drawable/ic_keyboard_arrow_down_black_24dp" />
             </FrameLayout>
+        </code.name.monkey.retromusic.views.WidthFitSquareLayout>
+
+    </LinearLayout>
+
+    <FrameLayout
+        android:id="@+id/playerQueueSheet"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="bottom"
+        app:behavior_hideable="false"
+        app:layout_behavior="code.name.monkey.retromusic.CustomBottomSheetBehavior">
+
+        <LinearLayout
+            android:id="@+id/sheetContent"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="?attr/colorSurface"
+            android:orientation="vertical">
+
+            <LinearLayout
+                android:id="@+id/playerControlsContainer"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <fragment
+                    android:id="@+id/playbackControlsFragment"
+                    android:name="code.name.monkey.retromusic.fragments.player.material.MaterialControlsFragment"
+                    android:layout_width="match_parent"
+                    android:layout_weight="1"
+                    android:layout_height="match_parent"
+                    tools:layout="@layout/fragment_material_playback_controls" />
+
+                <LinearLayout
+                    android:layout_weight="0"
+                    android:id="@+id/upComing"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:gravity="end"
+                    android:orientation="horizontal">
+
+                    <androidx.appcompat.widget.AppCompatImageView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:padding="16dp"
+                        app:srcCompat="@drawable/ic_shuffle_sharp_white_24dp" />
+
+                </LinearLayout>
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <com.google.android.material.textview.MaterialTextView
+                    android:id="@+id/player_queue_sub_header"
+                    android:layout_width="match_parent"
+                    android:layout_height="?attr/listPreferredItemHeightSmall"
+                    android:background="?attr/colorSurface"
+                    android:gravity="center_vertical"
+                    android:paddingLeft="16dp"
+                    android:paddingRight="16dp"
+                    android:text="@string/up_next"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Body2"
+                    android:textColor="?android:attr/textColorSecondary" />
+
+                <androidx.recyclerview.widget.RecyclerView
+                    android:id="@+id/recyclerView"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:background="?attr/colorSurface"
+                    tools:listitem="@layout/item_list" />
+            </LinearLayout>
         </LinearLayout>
     </FrameLayout>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

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

@@ -30,9 +30,10 @@
         android:layout_height="wrap_content"
         android:layout_marginTop="8dp"
         app:labelBehavior="gone"
+        app:layout_constraintBottom_toTopOf="@id/playPauseButton"
         app:layout_constraintEnd_toStartOf="@id/songTotalTime"
         app:layout_constraintStart_toEndOf="@id/songCurrentProgress"
-        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/songInfo"
         app:thumbRadius="@dimen/slider_thumb_radius"
         app:trackHeight="@dimen/slider_track_height"
         tools:ignore="RtlHardcoded,UnusedAttribute"
@@ -61,7 +62,7 @@
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintHorizontal_bias="0.5"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/progressSlider">
+        app:layout_constraintTop_toTopOf="parent">
 
         <com.google.android.material.textview.MaterialTextView
             android:id="@+id/title"
@@ -114,7 +115,10 @@
         android:paddingEnd="16dp"
         android:textColor="?android:attr/textColorSecondary"
         android:textSize="12sp"
-        app:layout_constraintBottom_toTopOf="@+id/playPauseButton"
+        app:layout_constraintBottom_toTopOf="@+id/progressSlider"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/text"
         tools:text="@tools:sample/lorem/random" />
 
@@ -155,11 +159,11 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:background="?attr/roundSelector"
-        app:layout_constraintBottom_toTopOf="@+id/volumeFragmentContainer"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/nextButton"
         app:layout_constraintHorizontal_bias="0.5"
         app:layout_constraintStart_toEndOf="@+id/previousButton"
-        app:layout_constraintTop_toBottomOf="@+id/songInfo"
+        app:layout_constraintTop_toBottomOf="@+id/progressSlider"
         app:srcCompat="@drawable/ic_pause_sharp_white_64dp"
         tools:tint="@color/md_black_1000" />
 
@@ -194,15 +198,12 @@
         tools:ignore="MissingPrefix"
         tools:tint="@color/md_black_1000" />
 
-
     <FrameLayout
         android:id="@+id/volumeFragmentContainer"
-        android:layout_width="match_parent"
+        android:layout_width="0dp"
-        android:layout_height="wrap_content"
+        android:layout_height="0dp"
-        android:layout_weight="0"
+        android:visibility="gone"
-        android:paddingStart="8dp"
-        android:paddingEnd="8dp"
         app:layout_constraintBottom_toBottomOf="parent"
-        tools:backgroundTint="@color/md_red_400"
+        app:layout_constraintStart_toStartOf="parent" />
-        tools:layout_height="52dp" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>

appthemehelper/src/main/java/code/name/monkey/appthemehelper/util/ColorUtil.kt

@@ -33,13 +33,19 @@ object ColorUtil {
         return shiftColor(color, 0.9f)
     }
 
+    @ColorInt
+    fun darkenColorTheme(@ColorInt color: Int): Int {
+        return shiftColor(color, 0.8f)
+    }
+
     @ColorInt
     fun lightenColor(@ColorInt color: Int): Int {
         return shiftColor(color, 1.1f)
     }
 
     fun isColorLight(@ColorInt color: Int): Boolean {
-        val darkness = 1 - (0.299 * Color.red(color) + 0.587 * Color.green(color) + 0.114 * Color.blue(color)) / 255
+        val darkness =
+            1 - (0.299 * Color.red(color) + 0.587 * Color.green(color) + 0.114 * Color.blue(color)) / 255
         return darkness < 0.4
     }
 
@@ -94,8 +100,14 @@ object ColorUtil {
     }
 
     fun isColorSaturated(@ColorInt color: Int): Boolean {
-        val max = Math.max(0.299 * Color.red(color), Math.max(0.587 * Color.green(color), 0.114 * Color.blue(color)))
+        val max = Math.max(
-        val min = Math.min(0.299 * Color.red(color), Math.min(0.587 * Color.green(color), 0.114 * Color.blue(color)))
+            0.299 * Color.red(color),
+            Math.max(0.587 * Color.green(color), 0.114 * Color.blue(color))
+        )
+        val min = Math.min(
+            0.299 * Color.red(color),
+            Math.min(0.587 * Color.green(color), 0.114 * Color.blue(color))
+        )
         val diff = Math.abs(max - min)
         return diff > 20
     }
@@ -122,12 +134,17 @@ object ColorUtil {
     }
 
     @ColorInt
-    fun getReadableText(@ColorInt textColor: Int, @ColorInt backgroundColor: Int, difference: Int): Int {
+    fun getReadableText(
+        @ColorInt textColor: Int,
+        @ColorInt backgroundColor: Int,
+        difference: Int
+    ): Int {
         var textColorFinal = textColor
         val isLight = isColorLight(backgroundColor)
         var i = 0
         while (getDifference(textColorFinal, backgroundColor) < difference && i < 100) {
-            textColorFinal = getMixedColor(textColorFinal, if (isLight) Color.BLACK else Color.WHITE)
+            textColorFinal =
+                getMixedColor(textColorFinal, if (isLight) Color.BLACK else Color.WHITE)
             i++
         }
 
@@ -137,7 +154,8 @@ object ColorUtil {
     @ColorInt
     fun getContrastColor(@ColorInt color: Int): Int {
         // Counting the perceptive luminance - human eye favors green color...
-        val a = 1 - (0.299 * Color.red(color) + 0.587 * Color.green(color) + 0.114 * Color.blue(color)) / 255
+        val a =
+            1 - (0.299 * Color.red(color) + 0.587 * Color.green(color) + 0.114 * Color.blue(color)) / 255
         return if (a < 0.5) Color.BLACK else Color.WHITE
     }
 }