How do I retrieve the usWidthClass value from the OS/2 table? #3401

futuremotiondev · 2023-12-22T02:39:48Z

futuremotiondev
Dec 22, 2023

I have the following code that is being implemented into a generalized "Font Info" function:

ttLibFont = ttLib.TTFont(fontfile, ignoreDecompileErrors=True)
    
    variableInstances = {}
    if(fontIsVariable):
        family = ttLibFont["name"].getName(16, 3, 1, 0x409)
        if family is None:
            family = ttLibFont["name"].getName(1, 3, 1, 0x409)
        idx = 0
        for instance in ttLibFont["fvar"].instances:
            style = ttLibFont["name"].getName(instance.subfamilyNameID, 3, 1, 0x409)
            variableInstances[idx] = (f"{family} {style}")
            idx = idx + 1
    else:
        variableInstances = "None"
    
    numGlyphs = ttLibFont['maxp'].numGlyphs
    unitsPerEm = ttLibFont['head'].unitsPerEm
    postScriptName = ttLibFont['name'].getDebugName(6)
    fontVersion = ttLibFont['name'].getDebugName(5)
    familyName = ttLibFont['name'].getDebugName(1)
    styleName = ttLibFont['name'].getDebugName(2)
    fullName = ttLibFont['name'].getDebugName(4)
    designer = ttLibFont['name'].getDebugName(9)
    vendorURL = ttLibFont['name'].getDebugName(11)
    designerURL = ttLibFont['name'].getDebugName(12)
    typographicFamilyName = ttLibFont['name'].getDebugName(16)
    typographicSubfamilyName = ttLibFont['name'].getDebugName(17)
    licenseDescription = ttLibFont['name'].getDebugName(13)

But I have been unable to find information on how to get the usWidthClass value from the OS/2 table. Am I missing something obvious? Could really use some help.

Thank you.

justvanrossum · 2023-12-22T10:25:18Z

justvanrossum
Dec 22, 2023
Collaborator

This should do it:

usWidthClass = font["OS/2"].usWidthClass

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How do I retrieve the usWidthClass value from the OS/2 table? #3401

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justvanrossum Dec 22, 2023 Collaborator

futuremotiondev
Dec 22, 2023

justvanrossum
Dec 22, 2023
Collaborator