Add annotations.py.

Lib/fontParts/base/annotations.py

@@ -0,0 +1,38 @@
+# pylint: disable=C0103, C0114
+
+from __future__ import annotations
+from typing import Dict, List, Tuple, TypeVar, Union
+
+from fontTools.pens.basePen import AbstractPen
+from fontTools.pens.pointPen import AbstractPointPen
+
+# ------------
+# Type Aliases
+# ------------
+
+# Builtins
+
+T = TypeVar('T')
+CollectionType = Union[List[T], Tuple[T, ...]]
+IntFloatType = Union[int, float]
+
+# FontTools
+
+PenType = AbstractPen
+PointPenType = AbstractPointPen
+
+# FontParts
+
+BoundsType = Tuple[IntFloatType, IntFloatType, IntFloatType, IntFloatType]
+CharacterMappingType = Dict[int, Tuple[str, ...]]
+ColorType = Tuple[IntFloatType, IntFloatType, IntFloatType, IntFloatType]
+CoordinateType = Tuple[IntFloatType, IntFloatType]
+FactorType = Union[IntFloatType, Tuple[float, float]]
+KerningKeyType = Tuple[str, str]
+KerningDictType = Dict[KerningKeyType, IntFloatType]
+ReverseComponentMappingType = Dict[str, Tuple[str, ...]]
+ScaleType = Tuple[IntFloatType, IntFloatType]
+TransformationMatrixType = Tuple[
+    IntFloatType, IntFloatType, IntFloatType,
+    IntFloatType, IntFloatType, IntFloatType
+]