c2abd045b3
Added interpolation of glyph advance width, from HVAR/hmtx, and derivation of new LSB. Updated tests to match. Needed to cherrypick from another branch an update for psCharstrings to allow the CFFSubr.draw() method to work.
179 lines
6.5 KiB
Python
179 lines
6.5 KiB
Python
from __future__ import print_function, division, absolute_import
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from fontTools.misc.py23 import *
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from fontTools.ttLib import TTFont
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from fontTools.varLib import build
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from fontTools.varLib.mutator import main as mutator
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from fontTools.varLib.mutator import instantiateVariableFont as make_instance
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import difflib
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import os
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import shutil
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import sys
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import tempfile
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import unittest
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class MutatorTest(unittest.TestCase):
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def __init__(self, methodName):
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unittest.TestCase.__init__(self, methodName)
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# Python 3 renamed assertRaisesRegexp to assertRaisesRegex,
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# and fires deprecation warnings if a program uses the old name.
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if not hasattr(self, "assertRaisesRegex"):
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self.assertRaisesRegex = self.assertRaisesRegexp
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def setUp(self):
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self.tempdir = None
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self.num_tempfiles = 0
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def tearDown(self):
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if self.tempdir:
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shutil.rmtree(self.tempdir)
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@staticmethod
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def get_test_input(test_file_or_folder):
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path, _ = os.path.split(__file__)
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return os.path.join(path, "data", test_file_or_folder)
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@staticmethod
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def get_test_output(test_file_or_folder):
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path, _ = os.path.split(__file__)
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return os.path.join(path, "data", "test_results", test_file_or_folder)
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@staticmethod
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def get_file_list(folder, suffix, prefix=''):
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all_files = os.listdir(folder)
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file_list = []
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for p in all_files:
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if p.startswith(prefix) and p.endswith(suffix):
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file_list.append(os.path.abspath(os.path.join(folder, p)))
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return file_list
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def temp_path(self, suffix):
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self.temp_dir()
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self.num_tempfiles += 1
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return os.path.join(self.tempdir,
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"tmp%d%s" % (self.num_tempfiles, suffix))
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def temp_dir(self):
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if not self.tempdir:
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self.tempdir = tempfile.mkdtemp()
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def read_ttx(self, path):
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lines = []
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with open(path, "r", encoding="utf-8") as ttx:
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for line in ttx.readlines():
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# Elide ttFont attributes because ttLibVersion may change,
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# and use os-native line separators so we can run difflib.
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if line.startswith("<ttFont "):
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lines.append("<ttFont>" + os.linesep)
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else:
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lines.append(line.rstrip() + os.linesep)
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return lines
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def expect_ttx(self, font, expected_ttx, tables):
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path = self.temp_path(suffix=".ttx")
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font.saveXML(path, tables=tables)
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actual = self.read_ttx(path)
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expected = self.read_ttx(expected_ttx)
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if actual != expected:
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for line in difflib.unified_diff(
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expected, actual, fromfile=expected_ttx, tofile=path):
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sys.stdout.write(line)
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self.fail("TTX output is different from expected")
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def compile_font(self, path, suffix, temp_dir):
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ttx_filename = os.path.basename(path)
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savepath = os.path.join(temp_dir, ttx_filename.replace('.ttx', suffix))
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font = TTFont(recalcBBoxes=False, recalcTimestamp=False)
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font.importXML(path)
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font.save(savepath, reorderTables=None)
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return font, savepath
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# -----
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# Tests
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# -----
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def test_varlib_mutator_ttf(self):
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suffix = '.ttf'
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ds_path = self.get_test_input('Build.designspace')
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ufo_dir = self.get_test_input('master_ufo')
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ttx_dir = self.get_test_input('master_ttx_interpolatable_ttf')
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self.temp_dir()
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ttx_paths = self.get_file_list(ttx_dir, '.ttx', 'TestFamily-')
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for path in ttx_paths:
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self.compile_font(path, suffix, self.tempdir)
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finder = lambda s: s.replace(ufo_dir, self.tempdir).replace('.ufo', suffix)
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varfont, _, _ = build(ds_path, finder)
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varfont_name = 'Mutator'
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varfont_path = os.path.join(self.tempdir, varfont_name + suffix)
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varfont.save(varfont_path)
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args = [varfont_path, 'wght=500', 'cntr=50']
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mutator(args)
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instfont_path = os.path.splitext(varfont_path)[0] + '-instance' + suffix
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instfont = TTFont(instfont_path)
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tables = [table_tag for table_tag in instfont.keys() if table_tag != 'head']
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expected_ttx_path = self.get_test_output(varfont_name + '.ttx')
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self.expect_ttx(instfont, expected_ttx_path, tables)
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def test_varlib_mutator_getvar_ttf(self):
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suffix = '.ttf'
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ttx_dir = self.get_test_input('master_ttx_getvar_ttf')
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self.temp_dir()
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ttx_paths = self.get_file_list(ttx_dir, '.ttx', 'Mutator_Getvar')
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for path in ttx_paths:
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self.compile_font(path, suffix, self.tempdir)
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varfont_name = 'Mutator_Getvar'
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varfont_path = os.path.join(self.tempdir, varfont_name + suffix)
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args = [varfont_path, 'wdth=80', 'ASCN=628']
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mutator(args)
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instfont_path = os.path.splitext(varfont_path)[0] + '-instance' + suffix
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instfont = TTFont(instfont_path)
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tables = [table_tag for table_tag in instfont.keys() if table_tag != 'head']
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expected_ttx_path = self.get_test_output(varfont_name + '-instance.ttx')
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self.expect_ttx(instfont, expected_ttx_path, tables)
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def test_varlib_mutator_iup_ttf(self):
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suffix = '.ttf'
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ufo_dir = self.get_test_input('master_ufo')
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ttx_dir = self.get_test_input('master_ttx_varfont_ttf')
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self.temp_dir()
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ttx_paths = self.get_file_list(ttx_dir, '.ttx', 'Mutator_IUP')
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for path in ttx_paths:
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self.compile_font(path, suffix, self.tempdir)
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varfont_name = 'Mutator_IUP'
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varfont_path = os.path.join(self.tempdir, varfont_name + suffix)
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args = [varfont_path, 'wdth=80', 'ASCN=628']
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mutator(args)
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instfont_path = os.path.splitext(varfont_path)[0] + '-instance' + suffix
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instfont = TTFont(instfont_path)
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tables = [table_tag for table_tag in instfont.keys() if table_tag != 'head']
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expected_ttx_path = self.get_test_output(varfont_name + '-instance.ttx')
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self.expect_ttx(instfont, expected_ttx_path, tables)
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def test_varlib_mutator_CFF2(self):
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otf_vf_path = self.get_test_input('TestCFF2VF.otf')
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expected_ttx_name = 'InterpolateTestCFF2VF'
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tables = ["hmtx", "CFF2"]
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loc = {'wght':float(200)}
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varfont = TTFont(otf_vf_path)
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new_font = make_instance(varfont, loc)
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expected_ttx_path = self.get_test_output(expected_ttx_name + '.ttx')
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self.expect_ttx(new_font, expected_ttx_path, tables)
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if __name__ == "__main__":
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sys.exit(unittest.main())
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