示例#1
0
def featureVarsTestFont():
    fb = FontBuilder(unitsPerEm=100)
    fb.setupGlyphOrder([".notdef", "f", "f_f", "dollar", "dollar.rvrn"])
    fb.setupCharacterMap({ord("f"): "f", ord("$"): "dollar"})
    fb.setupNameTable({
        "familyName": "TestFeatureVars",
        "styleName": "Regular"
    })
    fb.setupPost()
    fb.setupFvar(axes=[("wght", 100, 400, 900, "Weight")], instances=[])
    fb.addOpenTypeFeatures("""\
        feature dlig {
            sub f f by f_f;
        } dlig;
    """)
    fb.addFeatureVariations([([{
        "wght": (0.20886, 1.0)
    }], {
        "dollar": "dollar.rvrn"
    })],
                            featureTag="rvrn")
    buf = io.BytesIO()
    fb.save(buf)
    buf.seek(0)

    return TTFont(buf)
示例#2
0
def test_subset_feature_variations():
    fb = FontBuilder(unitsPerEm=100)
    fb.setupGlyphOrder([".notdef", "f", "f_f", "dollar", "dollar.rvrn"])
    fb.setupCharacterMap({ord("f"): "f", ord("$"): "dollar"})
    fb.setupNameTable({
        "familyName": "TestFeatureVars",
        "styleName": "Regular"
    })
    fb.setupPost()
    fb.setupFvar(axes=[("wght", 100, 400, 900, "Weight")], instances=[])
    fb.addOpenTypeFeatures("""\
        feature dlig {
            sub f f by f_f;
        } dlig;
    """)
    fb.addFeatureVariations([([{
        "wght": (0.20886, 1.0)
    }], {
        "dollar": "dollar.rvrn"
    })],
                            featureTag="rvrn")
    buf = io.BytesIO()
    fb.save(buf)
    buf.seek(0)

    font = TTFont(buf)

    options = subset.Options()
    subsetter = subset.Subsetter(options)
    subsetter.populate(unicodes=[ord("f"), ord("$")])
    subsetter.subset(font)

    featureTags = {
        r.FeatureTag
        for r in font["GSUB"].table.FeatureList.FeatureRecord
    }
    # 'dlig' is discretionary so it is dropped by default
    assert "dlig" not in featureTags
    assert "f_f" not in font.getGlyphOrder()
    # 'rvrn' is required so it is kept by default
    assert "rvrn" in featureTags
    assert "dollar.rvrn" in font.getGlyphOrder()