shadow without animation

OsmAnd/res/drawable/shadow.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item>
+        <shape
+            android:dither="true"
+            android:shape="rectangle">
+
+            <gradient
+                android:angle="90"
+                android:startColor="#1A000000"
+                android:centerColor="#00FFFFFF"
+                android:endColor="#00FFFFFF" />
+
+        </shape>
+    </item>
+
+    <item>
+        <shape
+            android:dither="true"
+            android:shape="rectangle">
+
+            <gradient
+                android:angle="90"
+                android:startColor="#0D000000"
+                android:centerColor="#00FFFFFF"
+                android:endColor="#00FFFFFF" />
+
+        </shape>
+    </item>
+
+</layer-list>

OsmAnd/res/layout/bottom_sheet_behaviour_base.xml

@@ -38,9 +38,9 @@
 		<androidx.appcompat.widget.AppCompatImageView
 			android:id="@+id/buttons_shadow"
 			android:layout_width="match_parent"
-			android:layout_height="10dp"
+			android:layout_height="8dp"
 			android:layout_gravity="bottom"
-			android:background="@drawable/bg_contextmenu_shadow_top_light"
+			android:background="@drawable/shadow"
 			android:visibility="gone" />
 
 		<include layout="@layout/bottom_buttons" />

OsmAnd/res/layout/bottom_sheet_menu_base.xml

@@ -33,9 +33,9 @@
 		<androidx.appcompat.widget.AppCompatImageView
 			android:id="@+id/buttons_shadow"
 			android:layout_width="match_parent"
-			android:layout_height="10dp"
+			android:layout_height="8dp"
 			android:layout_gravity="bottom"
-			android:background="@drawable/bg_contextmenu_shadow_top_light"
+			android:background="@drawable/shadow"
 			android:visibility="gone" />
 	</FrameLayout>
 

OsmAnd/res/layout/edit_arrangement_list_fragment.xml

@@ -32,8 +32,8 @@
 			<androidx.appcompat.widget.AppCompatImageView
 				android:id="@+id/buttons_shadow"
 				android:layout_width="match_parent"
-				android:layout_height="10dp"
+				android:layout_height="8dp"
-				android:background="@drawable/bg_contextmenu_shadow_top_light" />
+				android:background="@drawable/shadow" />
 
 			<LinearLayout
 				android:layout_width="match_parent"

OsmAnd/res/layout/follow_track_options.xml

@@ -128,9 +128,9 @@
 		<androidx.appcompat.widget.AppCompatImageView
 			android:id="@+id/buttons_shadow"
 			android:layout_width="match_parent"
-			android:layout_height="10dp"
+			android:layout_height="8dp"
 			android:layout_gravity="bottom"
-			android:background="@drawable/bg_contextmenu_shadow_top_light" />
+			android:background="@drawable/shadow" />
 
 		<include
 			layout="@layout/bottom_buttons"

OsmAnd/res/layout/fragment_gpx_approximation_bottom_sheet_dialog.xml

@@ -98,9 +98,9 @@
 		<androidx.appcompat.widget.AppCompatImageView
 			android:id="@+id/buttons_shadow"
 			android:layout_width="match_parent"
-			android:layout_height="10dp"
+			android:layout_height="8dp"
 			android:layout_gravity="bottom"
-			android:background="@drawable/bg_contextmenu_shadow_top_light" />
+			android:background="@drawable/shadow" />
 
 		<include
 			layout="@layout/bottom_buttons"

OsmAnd/res/layout/plan_route_info.xml

@@ -591,9 +591,9 @@
 		<androidx.appcompat.widget.AppCompatImageView
 			android:id="@+id/buttons_shadow"
 			android:layout_width="match_parent"
-			android:layout_height="10dp"
+			android:layout_height="8dp"
 			android:layout_gravity="bottom"
-			android:background="@drawable/bg_contextmenu_shadow_top_light" />
+			android:background="@drawable/shadow" />
 
 		<include
 			layout="@layout/route_info_menu_control_buttons"

OsmAnd/res/layout/shadow.xml

@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_height="20dp" android:layout_width="30dp">
+
+    <!-- Drop Shadow Stack -->
+    <item>
+        <shape>
+            <padding
+                android:bottom="1dp"
+                android:left="1dp"
+                android:right="1dp"
+                android:top="1dp" />
+
+            <solid android:color="#00CCCCCC" />
+
+            <corners android:radius="3dp" />
+        </shape>
+    </item>
+    
+    <item>
+        <shape>
+            <padding
+                android:bottom="1dp"
+                android:left="1dp"
+                android:right="1dp"
+                android:top="1dp" />
+
+            <solid android:color="#10CCCCCC" />
+
+            <corners android:radius="3dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <padding
+                android:bottom="1dp"
+                android:left="1dp"
+                android:right="1dp"
+                android:top="1dp" />
+
+            <solid android:color="#20CCCCCC" />
+
+            <corners android:radius="3dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <padding
+                android:bottom="1dp"
+                android:left="1dp"
+                android:right="1dp"
+                android:top="1dp" />
+
+            <solid android:color="#30CCCCCC" />
+
+            <corners android:radius="3dp" />
+        </shape>
+    </item>
+    <item>
+        <shape>
+            <padding
+                android:bottom="1dp"
+                android:left="1dp"
+                android:right="1dp"
+                android:top="1dp" />
+
+            <solid android:color="#50CCCCCC" />
+
+            <corners android:radius="3dp" />
+        </shape>
+    </item>
+
+    <!-- Background -->
+    <item>
+        <shape>
+            <solid android:color="@android:color/white" />
+
+            <corners android:radius="3dp" />
+        </shape>
+    </item>
+
+</layer-list>

OsmAnd/res/layout/track_appearance.xml

@@ -129,9 +129,9 @@
 		<androidx.appcompat.widget.AppCompatImageView
 			android:id="@+id/buttons_shadow"
 			android:layout_width="match_parent"
-			android:layout_height="10dp"
+			android:layout_height="8dp"
 			android:layout_gravity="bottom"
-			android:background="@drawable/bg_contextmenu_shadow_top_light" />
+			android:background="@drawable/shadow" />
 
 		<include
 			layout="@layout/bottom_buttons"

OsmAnd/src/net/osmand/plus/routepreparationmenu/FollowTrackFragment.java

@@ -3,6 +3,7 @@ package net.osmand.plus.routepreparationmenu;
 import android.app.Activity;
 import android.content.ActivityNotFoundException;
 import android.content.Intent;
+import android.graphics.drawable.AnimationDrawable;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Build;
@@ -16,6 +17,7 @@ import android.view.ViewGroup.MarginLayoutParams;
 import android.view.ViewTreeObserver.OnScrollChangedListener;
 import android.widget.FrameLayout;
 import android.widget.ImageButton;
+import android.widget.ImageView;
 import android.widget.LinearLayout;
 
 import androidx.annotation.NonNull;
@@ -86,6 +88,8 @@ public class FollowTrackFragment extends ContextMenuScrollFragment implements Ca
 
 	private GPXFile gpxFile;
 
+	private View buttonsShadow;
+
 	private boolean editingTrack;
 	private boolean selectingTrack;
 	private int menuTitleHeight;
@@ -148,6 +152,7 @@ public class FollowTrackFragment extends ContextMenuScrollFragment implements Ca
 		View view = super.onCreateView(inflater, container, savedInstanceState);
 		if (view != null) {
 			ImageButton closeButton = view.findViewById(R.id.close_button);
+			buttonsShadow = view.findViewById(R.id.buttons_shadow);
 			closeButton.setImageDrawable(getContentIcon(AndroidUtils.getNavigationIconResId(app)));
 			closeButton.setOnClickListener(new View.OnClickListener() {
 				@Override
@@ -597,22 +602,15 @@ public class FollowTrackFragment extends ContextMenuScrollFragment implements Ca
 		UiUtilities.setupDialogButton(isNightMode(), cancelButton, DialogButtonType.SECONDARY, R.string.shared_string_close);
 	}
 
-	private void setupScrollShadow() {
-		int shadowIconId = isNightMode() ? R.drawable.bg_contextmenu_shadow : R.drawable.bg_contextmenu_shadow;
-		final Drawable shadowIcon = app.getUIUtilities().getIcon(shadowIconId);
 
+	private void setupScrollShadow() {
 		final View scrollView = getBottomScrollView();
-		final FrameLayout bottomContainer = getBottomContainer();
 		scrollView.getViewTreeObserver().addOnScrollChangedListener(new OnScrollChangedListener() {
 
 			@Override
 			public void onScrollChanged() {
-				int scrollY = scrollView.getScrollY();
+				boolean scrollToBottomAvailable = scrollView.canScrollVertically(1);
-				if (scrollY <= 0 && bottomContainer.getForeground() != null) {
+				AndroidUiHelper.updateVisibility(buttonsShadow, scrollToBottomAvailable);
-					bottomContainer.setForeground(null);
-				} else if (scrollY > 0 && bottomContainer.getForeground() == null) {
-					bottomContainer.setForeground(shadowIcon);
-				}
 			}
 		});
 	}

OsmAnd/src/net/osmand/plus/track/TrackAppearanceFragment.java

@@ -477,21 +477,13 @@ public class TrackAppearanceFragment extends ContextMenuScrollFragment implement
 	}
 
 	private void setupScrollShadow() {
-		int shadowIconId = isNightMode() ? R.drawable.bg_contextmenu_shadow : R.drawable.bg_contextmenu_shadow;
-		final Drawable shadowIcon = app.getUIUtilities().getIcon(shadowIconId);
-
 		final View scrollView = getBottomScrollView();
-		final FrameLayout bottomContainer = getBottomContainer();
 		scrollView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
 
 			@Override
 			public void onScrollChanged() {
-				int scrollY = scrollView.getScrollY();
+				boolean scrollToBottomAvailable = scrollView.canScrollVertically(1);
-				if (scrollY <= 0 && bottomContainer.getForeground() != null) {
+				AndroidUiHelper.updateVisibility(buttonsShadow, scrollToBottomAvailable);
-					bottomContainer.setForeground(null);
-				} else if (scrollY > 0 && bottomContainer.getForeground() == null) {
-					bottomContainer.setForeground(shadowIcon);
-				}
 				updateButtonsShadow();
 			}
 		});