From 539f745d0ee30daf0ddcd330077bc8d8c5c4883a Mon Sep 17 00:00:00 2001
From: simonpoole <simon@poole.ch>
Date: Tue, 5 Dec 2023 16:30:11 +0100
Subject: [PATCH] Restore zoom FABs elevation in onConfigurationChange

Fixes https://github.com/MarcusWolschon/osmeditor4android/issues/965
---
 .../de/blau/android/views/ZoomControls.java   | 26 ++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/src/main/java/de/blau/android/views/ZoomControls.java b/src/main/java/de/blau/android/views/ZoomControls.java
index 20522bb80b..68e49d8ed1 100644
--- a/src/main/java/de/blau/android/views/ZoomControls.java
+++ b/src/main/java/de/blau/android/views/ZoomControls.java
@@ -5,8 +5,10 @@
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.res.ColorStateList;
+import android.content.res.Configuration;
 import android.os.Build;
 import android.util.AttributeSet;
+import android.util.Log;
 import android.view.ContextThemeWrapper;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
@@ -22,11 +24,16 @@
 
 public class ZoomControls extends LinearLayout {
 
+    private static final String DEBUG_TAG = ZoomControls.class.getSimpleName();
+
     private final FloatingActionButton zoomIn;
     private final FloatingActionButton zoomOut;
 
     private final Context context;
 
+    private float elevationIn  = -1f;
+    private float elevationOut = -1f;
+
     /**
      * Construct a new zoom control view
      * 
@@ -130,4 +137,21 @@ private void setEnabled(@NonNull FloatingActionButton fab, boolean isEnabled) {
                     ThemeUtils.getStyleAttribColorValue(context, isEnabled ? R.attr.colorControlNormal : R.attr.colorPrimary, R.color.dark_grey));
         }
     }
-}
+
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        super.onLayout(changed, left, top, right, bottom);
+        if (elevationIn < 0f) {
+            elevationIn = zoomIn.getElevation();
+            elevationOut = zoomOut.getElevation();
+        }
+    }
+
+    @Override
+    protected void onConfigurationChanged(Configuration newConfig) {
+        // this is a workaround for https://github.com/MarcusWolschon/osmeditor4android/issues/965
+        Log.d(DEBUG_TAG, "onConfigurationChanged " + elevationIn + " " + elevationOut);
+        zoomIn.setElevation(elevationIn);
+        zoomOut.setElevation(elevationOut);
+    }
+}
\ No newline at end of file