Exemplo n.º 1
0
def _add_MVAR(font, model, master_ttfs, axisTags):

    log.info("Generating MVAR")

    store_builder = varStore.OnlineVarStoreBuilder(axisTags)
    store_builder.setModel(model)

    records = []
    lastTableTag = None
    fontTable = None
    tables = None
    for tag, (tableTag, itemName) in sorted(MVAR_ENTRIES.items(),
                                            key=lambda kv: kv[1]):
        if tableTag != lastTableTag:
            tables = fontTable = None
            if tableTag in font:
                # TODO Check all masters have same table set?
                fontTable = font[tableTag]
                tables = [master[tableTag] for master in master_ttfs]
            lastTableTag = tableTag
        if tables is None:
            continue

        # TODO support gasp entries

        master_values = [getattr(table, itemName) for table in tables]
        if _all_equal(master_values):
            base, varIdx = master_values[0], None
        else:
            base, varIdx = store_builder.storeMasters(master_values)
        setattr(fontTable, itemName, base)

        if varIdx is None:
            continue
        log.info('	%s: %s.%s	%s', tag, tableTag, itemName, master_values)
        rec = ot.MetricsValueRecord()
        rec.ValueTag = tag
        rec.VarIdx = varIdx
        records.append(rec)

    assert "MVAR" not in font
    if records:
        store = store_builder.finish()
        # Optimize
        mapping = store.optimize()
        for rec in records:
            rec.VarIdx = mapping[rec.VarIdx]

        MVAR = font["MVAR"] = newTable('MVAR')
        mvar = MVAR.table = ot.MVAR()
        mvar.Version = 0x00010000
        mvar.Reserved = 0
        mvar.VarStore = store
        # XXX these should not be hard-coded but computed automatically
        mvar.ValueRecordSize = 8
        mvar.ValueRecordCount = len(records)
        mvar.ValueRecord = sorted(records, key=lambda r: r.ValueTag)
Exemplo n.º 2
0
def _add_MVAR(font, model, master_ttfs, axisTags):

	log.info("Generating MVAR")

	store_builder = varStore.OnlineVarStoreBuilder(axisTags)
	store_builder.setModel(model)

	records = []
	lastTableTag = None
	fontTable = None
	tables = None
	for tag, (tableTag, itemName) in sorted(MVAR_ENTRIES.items(), key=lambda kv: kv[1]):
		if tableTag != lastTableTag:
			tables = fontTable = None
			if tableTag in font:
				# TODO Check all masters have same table set?
				fontTable = font[tableTag]
				tables = [master[tableTag] for master in master_ttfs]
			lastTableTag = tableTag
		if tables is None:
			continue

		# TODO support gasp entries

		master_values = [getattr(table, itemName) for table in tables]
		if _all_equal(master_values):
			base, varIdx = master_values[0], None
		else:
			base, varIdx = store_builder.storeMasters(master_values)
		setattr(fontTable, itemName, base)

		if varIdx is None:
			continue
		log.info('	%s: %s.%s	%s', tag, tableTag, itemName, master_values)
		rec = ot.MetricsValueRecord()
		rec.ValueTag = tag
		rec.VarIdx = varIdx
		records.append(rec)

	assert "MVAR" not in font
	if records:
		store = store_builder.finish()
		# Optimize
		mapping = store.optimize()
		for rec in records:
			rec.VarIdx = mapping[rec.VarIdx]

		MVAR = font["MVAR"] = newTable('MVAR')
		mvar = MVAR.table = ot.MVAR()
		mvar.Version = 0x00010000
		mvar.Reserved = 0
		mvar.VarStore = store
		# XXX these should not be hard-coded but computed automatically
		mvar.ValueRecordSize = 8
		mvar.ValueRecordCount = len(records)
		mvar.ValueRecord = sorted(records, key=lambda r: r.ValueTag)
Exemplo n.º 3
0
def _add_MVAR(font, masterModel, master_ttfs, axisTags):

    log.info("Generating MVAR")

    store_builder = varStore.OnlineVarStoreBuilder(axisTags)

    records = []
    lastTableTag = None
    fontTable = None
    tables = None
    # HACK: we need to special-case post.underlineThickness and .underlinePosition
    # and unilaterally/arbitrarily define a sentinel value to distinguish the case
    # when a post table is present in a given master simply because that's where
    # the glyph names in TrueType must be stored, but the underline values are not
    # meant to be used for building MVAR's deltas. The value of -0x8000 (-36768)
    # the minimum FWord (int16) value, was chosen for its unlikelyhood to appear
    # in real-world underline position/thickness values.
    specialTags = {"unds": -0x8000, "undo": -0x8000}

    for tag, (tableTag, itemName) in sorted(MVAR_ENTRIES.items(),
                                            key=lambda kv: kv[1]):
        # For each tag, fetch the associated table from all fonts (or not when we are
        # still looking at a tag from the same tables) and set up the variation model
        # for them.
        if tableTag != lastTableTag:
            tables = fontTable = None
            if tableTag in font:
                fontTable = font[tableTag]
                tables = []
                for master in master_ttfs:
                    if tableTag not in master or (
                            tag in specialTags
                            and getattr(master[tableTag],
                                        itemName) == specialTags[tag]):
                        tables.append(None)
                    else:
                        tables.append(master[tableTag])
                model, tables = masterModel.getSubModel(tables)
                store_builder.setModel(model)
            lastTableTag = tableTag

        if tables is None:  # Tag not applicable to the master font.
            continue

        # TODO support gasp entries

        master_values = [getattr(table, itemName) for table in tables]
        if models.allEqual(master_values):
            base, varIdx = master_values[0], None
        else:
            base, varIdx = store_builder.storeMasters(master_values)
        setattr(fontTable, itemName, base)

        if varIdx is None:
            continue
        log.info('	%s: %s.%s	%s', tag, tableTag, itemName, master_values)
        rec = ot.MetricsValueRecord()
        rec.ValueTag = tag
        rec.VarIdx = varIdx
        records.append(rec)

    assert "MVAR" not in font
    if records:
        store = store_builder.finish()
        # Optimize
        mapping = store.optimize()
        for rec in records:
            rec.VarIdx = mapping[rec.VarIdx]

        MVAR = font["MVAR"] = newTable('MVAR')
        mvar = MVAR.table = ot.MVAR()
        mvar.Version = 0x00010000
        mvar.Reserved = 0
        mvar.VarStore = store
        # XXX these should not be hard-coded but computed automatically
        mvar.ValueRecordSize = 8
        mvar.ValueRecordCount = len(records)
        mvar.ValueRecord = sorted(records, key=lambda r: r.ValueTag)
Exemplo n.º 4
0
def _add_MVAR(font, masterModel, master_ttfs, axisTags):

	log.info("Generating MVAR")

	store_builder = varStore.OnlineVarStoreBuilder(axisTags)

	records = []
	lastTableTag = None
	fontTable = None
	tables = None
	# HACK: we need to special-case post.underlineThickness and .underlinePosition
	# and unilaterally/arbitrarily define a sentinel value to distinguish the case
	# when a post table is present in a given master simply because that's where
	# the glyph names in TrueType must be stored, but the underline values are not
	# meant to be used for building MVAR's deltas. The value of -0x8000 (-36768)
	# the minimum FWord (int16) value, was chosen for its unlikelyhood to appear
	# in real-world underline position/thickness values.
	specialTags = {"unds": -0x8000, "undo": -0x8000}

	for tag, (tableTag, itemName) in sorted(MVAR_ENTRIES.items(), key=lambda kv: kv[1]):
		# For each tag, fetch the associated table from all fonts (or not when we are
		# still looking at a tag from the same tables) and set up the variation model
		# for them.
		if tableTag != lastTableTag:
			tables = fontTable = None
			if tableTag in font:
				fontTable = font[tableTag]
				tables = []
				for master in master_ttfs:
					if tableTag not in master or (
						tag in specialTags
						and getattr(master[tableTag], itemName) == specialTags[tag]
					):
						tables.append(None)
					else:
						tables.append(master[tableTag])
				model, tables = masterModel.getSubModel(tables)
				store_builder.setModel(model)
			lastTableTag = tableTag

		if tables is None:  # Tag not applicable to the master font.
			continue

		# TODO support gasp entries

		master_values = [getattr(table, itemName) for table in tables]
		if models.allEqual(master_values):
			base, varIdx = master_values[0], None
		else:
			base, varIdx = store_builder.storeMasters(master_values)
		setattr(fontTable, itemName, base)

		if varIdx is None:
			continue
		log.info('	%s: %s.%s	%s', tag, tableTag, itemName, master_values)
		rec = ot.MetricsValueRecord()
		rec.ValueTag = tag
		rec.VarIdx = varIdx
		records.append(rec)

	assert "MVAR" not in font
	if records:
		store = store_builder.finish()
		# Optimize
		mapping = store.optimize()
		for rec in records:
			rec.VarIdx = mapping[rec.VarIdx]

		MVAR = font["MVAR"] = newTable('MVAR')
		mvar = MVAR.table = ot.MVAR()
		mvar.Version = 0x00010000
		mvar.Reserved = 0
		mvar.VarStore = store
		# XXX these should not be hard-coded but computed automatically
		mvar.ValueRecordSize = 8
		mvar.ValueRecordCount = len(records)
		mvar.ValueRecord = sorted(records, key=lambda r: r.ValueTag)