Initial project baseline

backend/core/fonts.py

@@ -0,0 +1,25 @@
+from matplotlib.font_manager import FontProperties
+from PIL import ImageFont
+
+from . import config
+
+_global_font_cache = {}
+_font_properties_cache = {}
+
+
+def get_cached_font(font_path, size):
+    key = (font_path, size)
+    if key not in _global_font_cache:
+        try:
+            _global_font_cache[key] = ImageFont.truetype(font_path, size)
+        except IOError as e:
+            config._warn(f"字体加载失败，回退默认字体: path={font_path}, size={size}, error={e}")
+            _global_font_cache[key] = ImageFont.load_default()
+    return _global_font_cache[key]
+
+
+def get_font_properties(font_path, size):
+    key = (font_path, size)
+    if key not in _font_properties_cache:
+        _font_properties_cache[key] = FontProperties(fname=font_path, size=size)
+    return _font_properties_cache[key]