[feature] unload glyphs

common/Font.py

@@ -1,6 +1,5 @@
-from typing import Dict
 from pathlib import Path
-from typing import NamedTuple
+from typing import Dict, NamedTuple
 
 # convenience dictionary for translating names to glyph ids
 # note: overwritten/extended by the content of "glypNamesToUnicode.txt"
@@ -161,7 +160,6 @@ class Font:
         self.faces = faces
 
 
-
 def register_font(font_name, face_name, glyphs_in_fontfile, filepath):
     if not fonts.keys().__contains__(font_name):
         fonts[font_name] = Font({})
@@ -250,7 +248,10 @@ def get_glyphs(font_name, face_name, glyph_id):
     face = get_font_face(font_name, face_name)
     if face is None:
         print(f"ABC3D::get_glyph: font({font_name}) face({face_name}) not found")
-        print(fonts[font_name].faces.keys())
+        try:
+            print(fonts[font_name].faces.keys())
+        except:
+            print(fonts.keys())
         return []
 
     glyphs_for_id = face.glyphs.get(glyph_id)
@@ -291,6 +292,19 @@ def get_glyph(font_name, face_name, glyph_id, alternate=0):
     return glyphs[alternate]
 
 
+def unloaded_glyph(font_name, face_name, glyph_id):
+    face = get_font_face(font_name, face_name)
+    if face is None:
+        print(f"ABC3D::get_glyph: font({font_name}) face({face_name}) not found")
+        return
+    while True:
+        try:
+            fonts[font_name].faces[face_name].loaded_glyphs.remove(glyph_id)
+            del fonts[font_name].faces[face_name].glyphs[glyph_id]
+        except ValueError:
+            break
+
+
 class GlyphsAvailability(NamedTuple):
     loaded: str
     missing: str