diff options
Diffstat (limited to 'Lib/fontTools/ttLib/tables/_a_v_a_r.py')
| -rw-r--r-- | Lib/fontTools/ttLib/tables/_a_v_a_r.py | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/Lib/fontTools/ttLib/tables/_a_v_a_r.py b/Lib/fontTools/ttLib/tables/_a_v_a_r.py index 2b6a40ed..16f2a219 100644 --- a/Lib/fontTools/ttLib/tables/_a_v_a_r.py +++ b/Lib/fontTools/ttLib/tables/_a_v_a_r.py @@ -1,4 +1,3 @@ -from fontTools.misc.py23 import bytesjoin from fontTools.misc import sstruct from fontTools.misc.fixedTools import ( fixedToFloat as fi2fl, @@ -6,6 +5,7 @@ from fontTools.misc.fixedTools import ( floatToFixedToStr as fl2str, strToFixedToFloat as str2fl, ) +from fontTools.misc.textTools import bytesjoin from fontTools.ttLib import TTLibError from . import DefaultTable import struct @@ -28,6 +28,28 @@ assert sstruct.calcsize(AVAR_HEADER_FORMAT) == 8, sstruct.calcsize(AVAR_HEADER_F class table__a_v_a_r(DefaultTable.DefaultTable): + """Axis Variations Table + + This class represents the ``avar`` table of a variable font. The object has one + substantive attribute, ``segments``, which maps axis tags to a segments dictionary:: + + >>> font["avar"].segments # doctest: +SKIP + {'wght': {-1.0: -1.0, + 0.0: 0.0, + 0.125: 0.11444091796875, + 0.25: 0.23492431640625, + 0.5: 0.35540771484375, + 0.625: 0.5, + 0.75: 0.6566162109375, + 0.875: 0.81927490234375, + 1.0: 1.0}, + 'ital': {-1.0: -1.0, 0.0: 0.0, 1.0: 1.0}} + + Notice that the segments dictionary is made up of normalized values. A valid + ``avar`` segment mapping must contain the entries ``-1.0: -1.0, 0.0: 0.0, 1.0: 1.0``. + fontTools does not enforce this, so it is your responsibility to ensure that + mappings are valid. + """ dependencies = ["fvar"] |