tooling: fixes for variable font metadata

Makefile

@@ -214,9 +214,9 @@ $(FONTDIR)/var/Inter-Italic.var.ttf: $(FONTDIR)/var/inter-roman-and-italic.stamp
 	touch $@
 
 $(FONTDIR)/var/InterV.var.ttf: $(FONTDIR)/var/Inter.var.ttf | venv
-	. $(VENV) ; python misc/tools/rename.py --family "Inter Variable" -o $@ $<
+	. $(VENV) ; python misc/tools/rename.py --scrub-display --family "Inter Variable" -o $@ $<
 $(FONTDIR)/var/InterV-Italic.var.ttf: $(FONTDIR)/var/Inter-Italic.var.ttf | venv
-	. $(VENV) ; python misc/tools/rename.py --family "Inter Variable" -o $@ $<
+	. $(VENV) ; python misc/tools/rename.py --scrub-display --family "Inter Variable" -o $@ $<
 
 var: \
 	$(FONTDIR)/var/Inter.var.ttf \

misc/tools/gen-var-designspace.py

@@ -9,27 +9,43 @@ def remove_whitespace(s):
   return WHITESPACE_RE.sub("", s)
 
 
-def fixup_instances_text(designspace):
+def fixup_names(instance_or_source):
-  # makes the "text" (non-display) instances the default ones
+  instance_or_source.name = instance_or_source.name.replace(' Display', '')
+  if instance_or_source.styleName == 'Display':
+    instance_or_source.styleName = 'Regular'
+  else:
+    instance_or_source.styleName = instance_or_source.styleName.replace('Display ', '')
+
+
+def fixup_source(designspace, source):
+  fixup_names(source)
+
+
+def fixup_instance(designspace, instance):
+  fixup_names(instance)
+
+  psFamilyName = 'Inter'
+  instance.postScriptFontName = psFamilyName + remove_whitespace(instance.styleName)
+  instance.styleMapFamilyName = instance.styleMapFamilyName.replace(' Display', '')
+
+  # remove WWSFamilyName and WWSSubfamilyName properties
+  del instance.lib['com.schriftgestaltung.properties']
+
+  customParameters = instance.lib['com.schriftgestaltung.customParameters']
+  i = len(customParameters)
+  while i > 0:
+    i -= 1
+    if customParameters[i][0] == 'Has WWS Names':
+      del customParameters[i]
+
+
+def fixup_instances(designspace):
   i = len(designspace.instances)
   while i > 0:
     i -= 1
     instance = designspace.instances[i]
     if instance.name.find('Inter Display') != -1:
-      del designspace.instances[i]
+      fixup_instance(designspace, instance)
-
-
-def fixup_instances_display(designspace):
-  # makes the display instances the default ones
-  i = len(designspace.instances)
-  while i > 0:
-    i -= 1
-    instance = designspace.instances[i]
-    if instance.name.find('Inter Display') != -1:
-      if instance.styleName == 'Display':
-        instance.styleName = 'Regular'
-      else:
-        instance.styleName = instance.styleName.replace('Display ', '')
     else:
       del designspace.instances[i]
   # change default opsz value
@@ -39,11 +55,15 @@ def fixup_instances_display(designspace):
       break
 
 
-def fixup_postscript_instance_names(designspace):
+def fixup_sources(designspace):
-  # make sure there are PostScript names assigned (fontmake does not create these)
+  i = len(designspace.sources)
-  psFamilyName = remove_whitespace(designspace.instances[0].familyName)
+  while i > 0:
-  for instance in designspace.instances:
+    i -= 1
-    instance.postScriptFontName = psFamilyName + remove_whitespace(instance.styleName)
+    source = designspace.sources[i]
+    if source.name.find('Inter Display') != -1:
+      fixup_source(designspace, source)
+    else:
+      del designspace.sources[i]
 
 
 def main(argv):
@@ -56,10 +76,8 @@ def main(argv):
 
   designspace = DesignSpaceDocument.fromfile(args.input_designspace)
 
-  # fixup_instances_text(designspace)
+  fixup_instances(designspace)
-  fixup_instances_display(designspace)
+  fixup_sources(designspace)
-
-  fixup_postscript_instance_names(designspace)
 
   designspace.write(args.output_designspace)
 

misc/tools/rename.py

@@ -14,6 +14,7 @@ POSTSCRIPT_NAME     = 6
 PREFERRED_FAMILY    = 16
 TYPO_SUBFAMILY_NAME = 17
 WWS_FAMILY          = 21
+VAR_PS_NAME_PREFIX  = 25
 
 
 FAMILY_RELATED_IDS = set([
@@ -23,6 +24,7 @@ FAMILY_RELATED_IDS = set([
   POSTSCRIPT_NAME,
   PREFERRED_FAMILY,
   WWS_FAMILY,
+  VAR_PS_NAME_PREFIX,
 ])
 
 whitespace_re = re.compile(r'\s+')
@@ -131,7 +133,9 @@ def renameStylesGoogleFonts(font):
 
 
 def setStyleName(font, newStyleName):
-  newFullName = getFamilyName(font).strip() + " " + newStyleName
+  newFullName = getFamilyName(font).strip()
+  if newStyleName != 'Regular':
+    newFullName += " " + newStyleName
   newFullNamePs = remove_whitespace(newFullName)
   set_full_name(font, newFullName, newFullNamePs)
 
@@ -162,9 +166,24 @@ def setFamilyName(font, nextFamilyName):
     return s, nextFamilyName
 
   # postcript name can't contain spaces
-  psPrevFamilyNames = [s.replace(" ", "") for s in prevFamilyNames]
+  psPrevFamilyNames = []
+  for s in prevFamilyNames:
+    s = s.strip()
+    if s.find(' ') == -1:
+      psPrevFamilyNames.append(s)
+    else:
+      # Foo Bar Baz -> FooBarBaz
+      psPrevFamilyNames.append(s.replace(" ", ""))
+      # # Foo Bar Baz -> FooBar-Baz
+      p = s.rfind(' ')
+      s = s[:p] + '-' + s[p+1:]
+      psPrevFamilyNames.append(s)
+
   psNextFamilyName = nextFamilyName.replace(" ", "")
-  for rec in font["name"].names:
+  found_VAR_PS_NAME_PREFIX = False
+  nameTable = font["name"]
+
+  for rec in nameTable.names:
     name_id = rec.nameID
     if name_id not in FAMILY_RELATED_IDS:
       # leave uninteresting records unmodified
@@ -186,9 +205,24 @@ def setFamilyName(font, nextFamilyName):
         old, new = renameRecord(rec, [prev_psname], psNextFamilyName)
       else:
         old, new = renameRecord(rec, prevFamilyNames, nextFamilyName)
+    elif name_id == VAR_PS_NAME_PREFIX:
+      # Variations PostScript Name Prefix.
+      # If present in a variable font, it may be used as the family prefix in the
+      # PostScript Name Generation for Variation Fonts algorithm.
+      # The character set is restricted to ASCII-range uppercase Latin letters,
+      # lowercase Latin letters, and digits.
+      found_VAR_PS_NAME_PREFIX = True
+      old, new = renameRecord(rec, prevFamilyNames, nextFamilyName)
     else:
       old, new = renameRecord(rec, prevFamilyNames, nextFamilyName)
-    # print("  %r: '%s' -> '%s'" % (rec, old, new))
+    print("  %r: '%s' -> '%s'" % (rec, old, new))
+
+  # HACK! FIXME!
+  # add name ID 25 "Variations PostScript Name Prefix" if not found
+  if not found_VAR_PS_NAME_PREFIX and nextFamilyName.find('Variable') != -1:
+    varPSNamePrefix = remove_whitespace(nextFamilyName)
+    nameTable.setName(varPSNamePrefix, VAR_PS_NAME_PREFIX, 1, 0, 0)     # mac
+    nameTable.setName(varPSNamePrefix, VAR_PS_NAME_PREFIX, 3, 1, 0x409) # windows
 
 
 def main():
@@ -220,6 +254,8 @@ def main():
       args.family = remove_substring(getFamilyName(font), "Display")
     if not args.style:
       args.style = remove_substring(getStyleName(font), "Display")
+      if args.style == '':
+        args.style = 'Regular'
 
   editCount = 0
   try: