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Drop hints; also add option for not dropping

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This commit is contained in:
Behdad Esfahbod 2013-07-23 12:37:41 -04:00
parent 96f47043ab
commit ed98c61adb
1 changed files with 22 additions and 10 deletions
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32
pyotlss.py
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@ -447,8 +447,8 @@ def subset_feature_tags (self, feature_tags):
@add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS'))
def prune (self, options):
if 'layout_features' in options:
self.subset_feature_tags (options['layout_features'])
if 'layout-features' in options:
self.subset_feature_tags (options['layout-features'])
self.prune_lookups ()
return True
@ -512,6 +512,16 @@ def subset_glyphs (self, glyphs):
self.glyphOrder = [g for g in self.glyphOrder if g in glyphs]
return bool (self.glyphs)
@add_method(fontTools.ttLib.getTableClass('glyf'))
def prune (self, options):
# TODO move 'glyf' pruning to after subsetting to avoid loading all glyphs
if 'hinting' in options and not options['hinting']:
for g in self.glyphs.values ():
if hasattr (g, 'program'):
g.program = fontTools.ttLib.tables.ttProgram.Program()
g.program.fromBytecode([])
return True
@add_method(fontTools.ttLib.getTableClass('cmap'))
def subset_glyphs (self, glyphs):
for t in self.tables:
@ -572,10 +582,9 @@ def closure_glyphs (self, glyphs):
glyphs.extend (components)
drop_tables = ['BASE', 'JSTF', 'DSIG', 'EBDT', 'EBLC', 'EBSC', 'PCLT', 'LTSH', 'VDMX']
no_subset_tables = ['gasp', 'head', 'hhea', 'maxp', 'vhea', 'OS/2', 'loca', 'name']
# For now drop these
drop_tables += ['cvt ', 'fpgm', 'prep']
drop_tables_default = ['BASE', 'JSTF', 'DSIG', 'EBDT', 'EBLC', 'EBSC', 'PCLT', 'LTSH', 'VDMX']
no_subset_tables = ['gasp', 'head', 'hhea', 'maxp', 'vhea', 'OS/2', 'loca', 'name', 'cvt ', 'fpgm', 'prep']
hinting_tables = ['cvt ', 'fpgm', 'prep']
# Based on HarfBuzz shapers
layout_features_dict = {
@ -665,8 +674,10 @@ if __name__ == '__main__':
import xmlWriter
writer = xmlWriter.XMLWriter (sys.stdout)
prune_options = {
'layout_features': layout_features_all
options = {
'layout-features': layout_features_all,
'hinting': False,
'drop-tables': drop_tables_default
}
for tag in font.keys():
@ -674,7 +685,8 @@ if __name__ == '__main__':
if tag == 'GlyphOrder':
continue
if tag in drop_tables:
if tag in options['drop-tables'] or \
(not options['hinting'] and tag in hinting_tables):
if verbose:
print tag, "dropped."
del font[tag]
@ -684,7 +696,7 @@ if __name__ == '__main__':
if hasattr (clazz, 'prune'):
table = font[tag]
retain = table.prune (prune_options)
retain = table.prune (options)
lapse ("prune '%s'" % tag)
if not retain:
if verbose: