Fix peak theme background when expand

app/src/main/java/code/name/monkey/retromusic/activities/base/AbsSlidingMusicPanelActivity.kt

@@ -2,7 +2,9 @@ package code.name.monkey.retromusic.activities.base
 
 import android.animation.ValueAnimator
 import android.annotation.SuppressLint
+import android.graphics.Rect
 import android.os.Bundle
+import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup
 import android.view.ViewTreeObserver
@@ -11,6 +13,8 @@ import androidx.fragment.app.Fragment
 import code.name.monkey.appthemehelper.util.ATHUtil
 import code.name.monkey.appthemehelper.util.ColorUtil
 import code.name.monkey.retromusic.R
+import code.name.monkey.retromusic.extensions.hide
+import code.name.monkey.retromusic.extensions.show
 import code.name.monkey.retromusic.fragments.MiniPlayerFragment
 import code.name.monkey.retromusic.fragments.NowPlayingScreen
 import code.name.monkey.retromusic.fragments.NowPlayingScreen.*
@@ -60,6 +64,8 @@ abstract class AbsSlidingMusicPanelActivity : AbsMusicServiceActivity(), AbsPlay
 
         override fun onSlide(bottomSheet: View, slideOffset: Float) {
             setMiniPlayerAlphaProgress(slideOffset)
+            dimBackground.show()
+            dimBackground.alpha = slideOffset
         }
 
         override fun onStateChanged(bottomSheet: View, newState: Int) {
@@ -69,6 +75,7 @@ abstract class AbsSlidingMusicPanelActivity : AbsMusicServiceActivity(), AbsPlay
                 }
                 BottomSheetBehavior.STATE_COLLAPSED -> {
                     onPanelCollapsed()
+                    dimBackground.hide()
                 }
                 else -> {
 
@@ -344,4 +351,17 @@ abstract class AbsSlidingMusicPanelActivity : AbsMusicServiceActivity(), AbsPlay
             }
         }
     }
+
+    override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
+        if (ev?.action == MotionEvent.ACTION_DOWN) {
+            if (panelState == BottomSheetBehavior.STATE_EXPANDED) {
+                val outRect = Rect()
+                slidingPanel.getGlobalVisibleRect(outRect)
+                if (!outRect.contains(ev.rawX.toInt(), ev.rawY.toInt())) {
+                    bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
+                }
+            }
+        }
+        return super.dispatchTouchEvent(ev)
+    }
 }

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

@@ -9,8 +9,16 @@
     <FrameLayout
         android:id="@+id/mainContentFrame"
         android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+    <View
+        android:id="@+id/dimBackground"
+        android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_weight="1" />
+        android:background="?colorOnSecondary"
+        android:clickable="true"
+        android:focusable="true"
+        android:visibility="gone" />
 
     <com.google.android.material.card.MaterialCardView
         android:id="@+id/slidingPanel"