Double viewport height on modern devices

app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java

@@ -1343,7 +1343,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             }
         });
 
-        etViewportHeight.setHint(Integer.toString(WebViewEx.DEFAULT_VIEWPORT_HEIGHT));
+        etViewportHeight.setHint(Integer.toString(WebViewEx.getDefaultViewportHeight(getContext())));
         etViewportHeight.addTextChangedListener(new TextWatcher() {
             @Override
             public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
@@ -2404,11 +2404,11 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             swUndoManager.setChecked(prefs.getBoolean("undo_manager", false));
             swBrowserZoom.setChecked(prefs.getBoolean("browser_zoom", false));
             swFakeDark.setChecked(prefs.getBoolean("fake_dark", false));
-            if (prefs.contains("viewport_height")) {
-                int vh = prefs.getInt("viewport_height", WebViewEx.DEFAULT_VIEWPORT_HEIGHT);
-                etViewportHeight.setText(Integer.toString(vh));
-            } else
-                etViewportHeight.setText(null);
+
+            int dvh = WebViewEx.getDefaultViewportHeight(getContext());
+            int vh = prefs.getInt("viewport_height", dvh);
+            etViewportHeight.setHint(vh == dvh ? null : Integer.toString(dvh));
+
             swIgnoreFormattedSize.setChecked(prefs.getBoolean("ignore_formatted_size", false));
             swShowRecent.setChecked(prefs.getBoolean("show_recent", false));
             swModSeq.setChecked(prefs.getBoolean("use_modseq", true));

app/src/main/java/eu/faircode/email/WebViewEx.java

@@ -68,7 +68,7 @@ public class WebViewEx extends WebView implements DownloadListener, View.OnLongC
         super(context);
 
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
-        this.viewportHeight = prefs.getInt("viewport_height", DEFAULT_VIEWPORT_HEIGHT);
+        this.viewportHeight = prefs.getInt("viewport_height", getDefaultViewportHeight(context));
         boolean overview_mode = prefs.getBoolean("overview_mode", false);
         boolean safe_browsing = prefs.getBoolean("safe_browsing", false);
 
@@ -471,6 +471,13 @@ public class WebViewEx extends WebView implements DownloadListener, View.OnLongC
         }
     }
 
+    static int getDefaultViewportHeight(Context context) {
+        if (Helper.isGoogle() || Build.VERSION.SDK_INT > Build.VERSION_CODES.TIRAMISU)
+            return DEFAULT_VIEWPORT_HEIGHT * 2;
+        else
+            return DEFAULT_VIEWPORT_HEIGHT;
+    }
+
     @NonNull
     static String getUserAgent(Context context) {
         return getUserAgent(context, null);