Fix fonts in floating keyboards

app/src/main/java/org/solovyev/android/calculator/functions/BaseFunctionFragment.java

@@ -26,6 +26,7 @@ import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.res.Resources;
+import android.graphics.Typeface;
 import android.os.Bundle;
 import android.support.annotation.LayoutRes;
 import android.support.annotation.NonNull;
@@ -83,6 +84,8 @@ public abstract class BaseFunctionFragment extends BaseDialogFragment implements
     @Inject
     Keyboard keyboard;
     @Inject
+    Typeface typeface;
+    @Inject
     FunctionsRegistry functionsRegistry;
     @Inject
     VariablesRegistry variablesRegistry;
@@ -497,6 +500,12 @@ public abstract class BaseFunctionFragment extends BaseDialogFragment implements
             return keyboard.isVibrateOnKeypress();
         }
 
+        @NonNull
+        @Override
+        public Typeface getTypeface() {
+            return typeface;
+        }
+
         @Override
         public void done() {
             keyboardWindow.hide();