Use font mapper for monospace font

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

@@ -101,7 +101,7 @@ public class ActivitySignature extends ActivityBase {
         style_bar = findViewById(R.id.style_bar);
         bottom_navigation = findViewById(R.id.bottom_navigation);
 
-        etText.setTypeface(monospaced ? Typeface.MONOSPACE : Typeface.DEFAULT);
+        etText.setTypeface(monospaced ? StyleHelper.getTypeface("monospace", this) : Typeface.DEFAULT);
 
         etText.setSelectionListener(new EditTextCompose.ISelection() {
             @Override
@@ -234,7 +234,7 @@ public class ActivitySignature extends ActivityBase {
     @Override
     protected void onResume() {
         super.onResume();
-        etText.setTypeface(etText.isRaw() ? Typeface.MONOSPACE : Typeface.DEFAULT);
+        etText.setTypeface(etText.isRaw() ? StyleHelper.getTypeface("monospace", this) : Typeface.DEFAULT);
     }
 
     @Override
@@ -431,7 +431,7 @@ public class ActivitySignature extends ActivityBase {
 
         tvHtmlRemark.setVisibility(raw ? View.VISIBLE : View.GONE);
         etText.setRaw(raw);
-        etText.setTypeface(raw ? Typeface.MONOSPACE : Typeface.DEFAULT);
+        etText.setTypeface(raw ? StyleHelper.getTypeface("monospace", this) : Typeface.DEFAULT);
         load(html);
 
         if (raw)

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

@@ -6907,6 +6907,7 @@ public class FragmentCompose extends FragmentBase {
 
             SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
             final boolean plain_only = prefs.getBoolean("plain_only", false);
+            final Typeface monospace = StyleHelper.getTypeface("monospace", getContext());
 
             db.message().liveMessage(data.draft.id).observe(getViewLifecycleOwner(), new Observer<EntityMessage>() {
                 @Override
@@ -6967,10 +6968,10 @@ public class FragmentCompose extends FragmentBase {
 
                         if (compose_monospaced) {
                             if (draft.isPlainOnly())
-                                etBody.setTypeface(Typeface.MONOSPACE);
+                                etBody.setTypeface(monospace);
                             else {
                                 Typeface tf = etBody.getTypeface();
-                                if (tf == Typeface.MONOSPACE)
+                                if (tf == monospace)
                                     etBody.setTypeface(StyleHelper.getTypeface(compose_font, etBody.getContext()));
                             }
                         }