revamp loading and panels

common/Font.py

@@ -226,5 +226,23 @@ def get_loaded_fonts_and_faces():
             out.append([f,ff])
     return out
 
+MISSING_FONT = 0
+MISSING_FACE = 1
+
+def test_availability(font_name, face_name, text):
+    if not fonts.keys().__contains__(font_name):
+        return MISSING_FONT
+    if fonts[font_name].faces.get(face_name) == None:
+        return MISSING_FACE
+    loaded, missing, maybe = test_glyphs_availability(font_name,
+                                                      face_name,
+                                                      text)
+    return {
+            "loaded": loaded,
+            "missing": missing,
+            "maybe": maybe,
+            }
+    
+
 # holds all fonts
 fonts = {}