Thinner underline for grammar errors

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

@@ -411,9 +411,13 @@ public class LanguageTool {
         if (suggestions != null)
             for (LanguageTool.Suggestion suggestion : suggestions) {
                 Log.i("LT adding=" + suggestion);
+                int flags = ("Spelling mistake".equals(suggestion.title)
+                        || Build.VERSION.SDK_INT < Build.VERSION_CODES.S
+                        ? SuggestionSpan.FLAG_MISSPELLED
+                        : SuggestionSpan.FLAG_GRAMMAR_ERROR);
                 SuggestionSpan span = new SuggestionSpanEx(etBody.getContext(),
-                        suggestion.replacements.toArray(new String[0]),
-                        SuggestionSpan.FLAG_MISSPELLED);
+                        suggestion.replacements.toArray(new String[0]), flags);
+                Log.i("MMM " + suggestion.title + ": " + flags);
                 int s = start + suggestion.offset;
                 int e = s + suggestion.length;
                 if (s < 0 || s > edit.length() || e < 0 || e > edit.length()) {
@@ -461,25 +465,25 @@ public class LanguageTool {
     }
 
     private static class SuggestionSpanEx extends SuggestionSpan {
-        private final int highlightColor;
-        private final int dp3;
+        private final int underlineColor;
+        private final int underlineThickness;
 
         public SuggestionSpanEx(Context context, String[] suggestions, int flags) {
             super(context, suggestions, flags);
-            highlightColor = Helper.resolveColor(context,
+            underlineColor = Helper.resolveColor(context,
                     Build.VERSION.SDK_INT < Build.VERSION_CODES.Q
                             ? android.R.attr.textColorHighlight
                             : android.R.attr.colorError);
-            dp3 = Helper.dp2pixels(context, 2);
+            underlineThickness = Helper.dp2pixels(context, (getFlags() & FLAG_MISSPELLED) != 0 ? 2 : 1);
         }
 
         @Override
         public void updateDrawState(TextPaint tp) {
             if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q)
-                tp.bgColor = highlightColor;
+                tp.bgColor = underlineColor;
             else {
-                tp.underlineColor = highlightColor;
-                tp.underlineThickness = dp3;
+                tp.underlineColor = underlineColor;
+                tp.underlineThickness = underlineThickness;
             }
         }
     }