Python _f_v_a_r.NamedInstance类代码示例

 def test_compile_withoutPostScriptName(self):
     inst = NamedInstance()
     inst.subfamilyNameID = 345
     inst.postscriptNameID = 564
     inst.coordinates = {"wght": 0.7, "wdth": 0.5}
     self.assertEqual(FVAR_INSTANCE_DATA_WITHOUT_PSNAME,
                      inst.compile(["wght", "wdth"], False))

 def test_fromXML(self):
     inst = NamedInstance()
     attrs = {"nameID": "345"}
     inst.fromXML("NamedInstance", attrs, [
             ("coord", {"axis": "wght", "value": "0.7"}, []),
             ("coord", {"axis": "wdth", "value": "0.5"}, []),
             ], ttFont=MakeFont())
     self.assertEqual(345, inst.nameID)
     self.assertEqual({"wght": 0.7, "wdth": 0.5}, inst.coordinates)

 def test_fromXML_withoutPostScriptName(self):
     inst = NamedInstance()
     for name, attrs, content in parseXML(
             '<NamedInstance subfamilyNameID="345">'
             '    <coord axis="wght" value="0.7"/>'
             '    <coord axis="wdth" value="0.5"/>'
             '</NamedInstance>'):
         inst.fromXML(name, attrs, content, ttFont=MakeFont())
     self.assertEqual(345, inst.subfamilyNameID)
     self.assertEqual({"wght": 0.7, "wdth": 0.5}, inst.coordinates)

 def test_fromXML(self):
     inst = NamedInstance()
     for name, attrs, content in parseXML(
         '<NamedInstance nameID="345">'
         '    <coord axis="wght" value="0.7"/>'
         '    <coord axis="wdth" value="0.5"/>'
         "</NamedInstance>"
     ):
         inst.fromXML(name, attrs, content, ttFont=MakeFont())
     self.assertEqual(345, inst.nameID)
     self.assertEqual({"wght": 0.7, "wdth": 0.5}, inst.coordinates)

def _add_fvar(font, axes, instances):
	"""
	Add 'fvar' table to font.

	axes is an ordered dictionary of DesignspaceAxis objects.

	instances is list of dictionary objects with 'location', 'stylename',
	and possibly 'postscriptfontname' entries.
	"""

	assert axes
	assert isinstance(axes, OrderedDict)

	log.info("Generating fvar")

	fvar = newTable('fvar')
	nameTable = font['name']

	for a in axes.values():
		axis = Axis()
		axis.axisTag = Tag(a.tag)
		# TODO Skip axes that have no variation.
		axis.minValue, axis.defaultValue, axis.maxValue = a.minimum, a.default, a.maximum
		axis.axisNameID = nameTable.addMultilingualName(a.labelNames, font)
		axis.flags = int(a.hidden)
		fvar.axes.append(axis)

	for instance in instances:
		coordinates = instance.location

		if "en" not in instance.localisedStyleName:
			assert instance.styleName
			localisedStyleName = dict(instance.localisedStyleName)
			localisedStyleName["en"] = tounicode(instance.styleName)
		else:
			localisedStyleName = instance.localisedStyleName

		psname = instance.postScriptFontName

		inst = NamedInstance()
		inst.subfamilyNameID = nameTable.addMultilingualName(localisedStyleName)
		if psname is not None:
			psname = tounicode(psname)
			inst.postscriptNameID = nameTable.addName(psname)
		inst.coordinates = {axes[k].tag:axes[k].map_backward(v) for k,v in coordinates.items()}
		#inst.coordinates = {axes[k].tag:v for k,v in coordinates.items()}
		fvar.instances.append(inst)

	assert "fvar" not in font
	font['fvar'] = fvar

	return fvar

def _add_fvar(font, axes, instances):
	"""
	Add 'fvar' table to font.

	axes is an ordered dictionary of DesignspaceAxis objects.

	instances is list of dictionary objects with 'location', 'stylename',
	and possibly 'postscriptfontname' entries.
	"""

	assert axes
	assert isinstance(axes, OrderedDict)

	log.info("Generating fvar")

	fvar = newTable('fvar')
	nameTable = font['name']

	for a in axes.values():
		axis = Axis()
		axis.axisTag = Tag(a.tag)
		# TODO Skip axes that have no variation.
		axis.minValue, axis.defaultValue, axis.maxValue = a.minimum, a.default, a.maximum
		axis.axisNameID = nameTable.addName(tounicode(a.labelNames['en']))
		# TODO:
		# Replace previous line with the following when the following issues are resolved:
		# https://github.com/fonttools/fonttools/issues/930
		# https://github.com/fonttools/fonttools/issues/931
		# axis.axisNameID = nameTable.addMultilingualName(a.labelname, font)
		fvar.axes.append(axis)

	for instance in instances:
		coordinates = instance.location
		name = tounicode(instance.styleName)
		psname = instance.postScriptFontName

		inst = NamedInstance()
		inst.subfamilyNameID = nameTable.addName(name)
		if psname is not None:
			psname = tounicode(psname)
			inst.postscriptNameID = nameTable.addName(psname)
		inst.coordinates = {axes[k].tag:axes[k].map_backward(v) for k,v in coordinates.items()}
		#inst.coordinates = {axes[k].tag:v for k,v in coordinates.items()}
		fvar.instances.append(inst)

	assert "fvar" not in font
	font['fvar'] = fvar

	return fvar

 def test_toXML(self):
     font = MakeFont()
     inst = NamedInstance()
     inst.nameID = AddName(font, "Light Condensed").nameID
     inst.coordinates = {"wght": 0.7, "wdth": 0.5}
     writer = XMLWriter(StringIO())
     inst.toXML(writer, font)
     self.assertEqual([
         '',
         '<!-- Light Condensed -->',
         '<NamedInstance nameID="%s">' % inst.nameID,
           '<coord axis="wght" value="0.7"/>',
           '<coord axis="wdth" value="0.5"/>',
         '</NamedInstance>'
     ], xml_lines(writer))

def _add_fvar(font, axes, instances):
	assert "fvar" not in font
	font['fvar'] = fvar = table__f_v_a_r()

	for tag in sorted(axes.keys()):
		axis = Axis()
		axis.axisTag = tag
		name, axis.minValue, axis.defaultValue, axis.maxValue = axes[tag]
		axis.nameID = _AddName(font, name).nameID
		fvar.axes.append(axis)

	for name, coordinates in instances:
		inst = NamedInstance()
		inst.nameID = _AddName(font, name).nameID
		inst.coordinates = coordinates
		fvar.instances.append(inst)

def MakeFont():
    axes = [("wght", "Weight", 100, 400, 900), ("wdth", "Width", 50, 100, 200)]
    instances = [("Light", 300, 100), ("Light Condensed", 300, 75)]
    fvarTable = table__f_v_a_r()
    font = {"fvar": fvarTable}
    for tag, name, minValue, defaultValue, maxValue in axes:
        axis = Axis()
        axis.axisTag = tag
        axis.defaultValue = defaultValue
        axis.minValue, axis.maxValue = minValue, maxValue
        axis.nameID = AddName(font, name).nameID
        fvarTable.axes.append(axis)
    for name, weight, width in instances:
        inst = NamedInstance()
        inst.nameID = AddName(font, name).nameID
        inst.coordinates = {"wght": weight, "wdth": width}
        fvarTable.instances.append(inst)
    return font

def AddFontVariations(font):
    assert "fvar" not in font
    fvar = font["fvar"] = table__f_v_a_r()

    weight = Axis()
    weight.axisTag = "wght"
    weight.nameID = AddName(font, "Weight").nameID
    weight.minValue, weight.defaultValue, weight.maxValue = (100, 400, 900)
    fvar.axes.append(weight)

    # https://www.microsoft.com/typography/otspec/os2.htm#wtc
    for name, wght in (
            ("Thin", 100),
            ("Light", 300),
            ("Regular", 400),
            ("Bold", 700),
            ("Black", 900)):
        inst = NamedInstance()
        inst.nameID = AddName(font, name).nameID
        inst.coordinates = {"wght": wght}
        fvar.instances.append(inst)

 def test_toXML_withPostScriptName(self):
     font = MakeFont()
     inst = NamedInstance()
     inst.flags = 0xE9
     inst.subfamilyNameID = AddName(font, "Light Condensed").nameID
     inst.postscriptNameID = AddName(font, "Test-LightCondensed").nameID
     inst.coordinates = {"wght": 0.7, "wdth": 0.5}
     writer = XMLWriter(BytesIO())
     inst.toXML(writer, font)
     self.assertEqual([
         '',
         '<!-- Light Condensed -->',
         '<!-- PostScript: Test-LightCondensed -->',
         '<NamedInstance flags="0xE9" postscriptNameID="%s" subfamilyNameID="%s">' % (
             inst.postscriptNameID, inst.subfamilyNameID),
           '<coord axis="wght" value="0.7"/>',
           '<coord axis="wdth" value="0.5"/>',
         '</NamedInstance>'
     ], xml_lines(writer))

 def test_decompile(self):
     inst = NamedInstance()
     inst.decompile(FVAR_INSTANCE_DATA, ["wght", "wdth"])
     self.assertEqual(345, inst.nameID)
     self.assertEqual({"wght": 0.7, "wdth": 0.5}, inst.coordinates)

 def test_compile(self):
     inst = NamedInstance()
     inst.nameID = 345
     inst.coordinates = {"wght": 0.7, "wdth": 0.5}
     self.assertEqual(FVAR_INSTANCE_DATA, inst.compile(["wght", "wdth"]))

def _add_fvar_avar(font, axes, instances):
	"""
	Add 'fvar' table to font.

	axes is an ordered dictionary of DesignspaceAxis objects.

	instances is list of dictionary objects with 'location', 'stylename',
	and possibly 'postscriptfontname' entries.
	"""

	assert axes
	assert isinstance(axes, OrderedDict)

	log.info("Generating fvar / avar")

	fvar = newTable('fvar')
	nameTable = font['name']

	for a in axes.values():
		axis = Axis()
		axis.axisTag = Tag(a.tag)
		axis.minValue, axis.defaultValue, axis.maxValue = a.minimum, a.default, a.maximum
		axis.axisNameID = nameTable.addName(tounicode(a.labelname['en']))
		# TODO:
		# Replace previous line with the following when the following issues are resolved:
		# https://github.com/fonttools/fonttools/issues/930
		# https://github.com/fonttools/fonttools/issues/931
		# axis.axisNameID = nameTable.addMultilingualName(a.labelname, font)
		fvar.axes.append(axis)

	for instance in instances:
		coordinates = instance['location']
		name = tounicode(instance['stylename'])
		psname = instance.get('postscriptfontname')

		inst = NamedInstance()
		inst.subfamilyNameID = nameTable.addName(name)
		if psname is not None:
			psname = tounicode(psname)
			inst.postscriptNameID = nameTable.addName(psname)
		inst.coordinates = {axes[k].tag:axes[k].map_backward(v) for k,v in coordinates.items()}
		fvar.instances.append(inst)

	avar = newTable('avar')
	interesting = False
	for axis in axes.values():
		curve = avar.segments[axis.tag] = {}
		if not axis.map or all(k==v for k,v in axis.map.items()):
			continue
		interesting = True

		items = sorted(axis.map.items())
		keys   = [item[0] for item in items]
		vals = [item[1] for item in items]

		# Current avar requirements.  We don't have to enforce
		# these on the designer and can deduce some ourselves,
		# but for now just enforce them.
		assert axis.minimum == min(keys)
		assert axis.maximum == max(keys)
		assert axis.default in keys
		# No duplicates
		assert len(set(keys)) == len(keys)
		assert len(set(vals)) == len(vals)
		# Ascending values
		assert sorted(vals) == vals

		keys_triple = (axis.minimum, axis.default, axis.maximum)
		vals_triple = tuple(axis.map_forward(v) for v in keys_triple)

		keys = [models.normalizeValue(v, keys_triple) for v in keys]
		vals = [models.normalizeValue(v, vals_triple) for v in vals]
		curve.update(zip(keys, vals))

	if not interesting:
		log.info("No need for avar")
		avar = None

	assert "fvar" not in font
	font['fvar'] = fvar
	assert "avar" not in font
	if avar:
		font['avar'] = avar

	return fvar,avar

 def test_decompile_withoutPostScriptName(self):
     inst = NamedInstance()
     inst.decompile(FVAR_INSTANCE_DATA_WITHOUT_PSNAME, ["wght", "wdth"])
     self.assertEqual(0xFFFF, inst.postscriptNameID)
     self.assertEqual(345, inst.subfamilyNameID)
     self.assertEqual({"wght": 0.7, "wdth": 0.5}, inst.coordinates)