def test_blend_round_trip(self):
ttx_path = self.getpath('TestSparseCFF2VF.ttx')
ttf_font = TTFont(recalcBBoxes=False, recalcTimestamp=False)
ttf_font.importXML(ttx_path)
fontGlyphList = ttf_font.getGlyphOrder()
topDict = ttf_font['CFF2'].cff.topDictIndex[0]
charstrings = topDict.CharStrings
for glyphName in fontGlyphList:
cs = charstrings[glyphName]
cs.decompile()
cmds = programToCommands(cs.program, getNumRegions=cs.getNumRegions)
cmds_g = generalizeCommands(cmds)
cmds = specializeCommands(cmds_g, generalizeFirst=False)
program = commandsToProgram(cmds)
self.assertEqual(program, cs.program)
program = specializeProgram(program, getNumRegions=cs.getNumRegions)
self.assertEqual(program, cs.program)
program_g = generalizeProgram(program, getNumRegions=cs.getNumRegions)
program = commandsToProgram(cmds_g)
self.assertEqual(program, program_g)
def test_blend_round_trip(self):
ttx_path = self.getpath('TestSparseCFF2VF.ttx')
ttf_font = TTFont(recalcBBoxes=False, recalcTimestamp=False)
ttf_font.importXML(ttx_path)
fontGlyphList = ttf_font.getGlyphOrder()
topDict = ttf_font['CFF2'].cff.topDictIndex[0]
charstrings = topDict.CharStrings
for glyphName in fontGlyphList:
cs = charstrings[glyphName]
cs.decompile()
cmds = programToCommands(cs.program,
getNumRegions=cs.getNumRegions)
cmds_g = generalizeCommands(cmds)
cmds = specializeCommands(cmds_g, generalizeFirst=False)
program = commandsToProgram(cmds)
self.assertEqual(program, cs.program)
program = specializeProgram(program,
getNumRegions=cs.getNumRegions)
self.assertEqual(program, cs.program)
program_g = generalizeProgram(program,
getNumRegions=cs.getNumRegions)
program = commandsToProgram(cmds_g)
self.assertEqual(program, program_g)
def test_blend_programToCommands(self):
ttx_path = self.getpath('TestCFF2Widths.ttx')
ttf_font = TTFont(recalcBBoxes=False, recalcTimestamp=False)
ttf_font.importXML(ttx_path)
fontGlyphList = ttf_font.getGlyphOrder()
topDict = ttf_font['CFF2'].cff.topDictIndex[0]
charstrings = topDict.CharStrings
for glyphName in fontGlyphList:
cs = charstrings[glyphName]
cs.decompile()
cmds = programToCommands(cs.program,
getNumRegions=cs.getNumRegions)
program = commandsToProgram(cmds)
self.assertEqual(program, cs.program)
def getCharString( self, private=None, globalSubrs=None, var_model=None, optimize=True): commands = self._commands commands = self.reorder_blend_args(commands, partial (var_model.getDeltas, round=self.round)) if optimize: commands = specializeCommands( commands, generalizeFirst=False, maxstack=maxStackLimit) program = commandsToProgram(commands) charString = T2CharString( program=program, private=private, globalSubrs=globalSubrs) return charString
def test_blend_round_trip(self):
otfvf_path = self.get_test_input('TestSparseCFF2VF.otf')
ttf_font = TTFont(otfvf_path)
fontGlyphList = ttf_font.getGlyphOrder()
topDict = ttf_font['CFF2'].cff.topDictIndex[0]
charstrings = topDict.CharStrings
for glyphName in fontGlyphList:
print(glyphName)
cs = charstrings[glyphName]
cs.decompile()
cmds = programToCommands(cs.program,
getNumRegions=cs.getNumRegions)
cmds_g = generalizeCommands(cmds)
cmds = specializeCommands(cmds_g, generalizeFirst=False)
program = commandsToProgram(cmds)
self.assertEqual(program, cs.program)
program = specializeProgram(program,
getNumRegions=cs.getNumRegions)
self.assertEqual(program, cs.program)
program_g = generalizeProgram(program,
getNumRegions=cs.getNumRegions)
program = commandsToProgram(cmds_g)
self.assertEqual(program, program_g)
def getCharString( self, private=None, globalSubrs=None, var_model=None, optimize=True): commands = self._commands commands = self.reorder_blend_args(commands, var_model.getDeltas, self.roundNumber) if optimize: commands = specializeCommands( commands, generalizeFirst=False, maxstack=maxStackLimit) program = commandsToProgram(commands) charString = T2CharString( program=program, private=private, globalSubrs=globalSubrs) return charString
def getCharString(self, private=None, globalSubrs=None, optimize=True):
commands = self._commands
if optimize:
maxstack = 48 if not self._CFF2 else 513
commands = specializeCommands(commands,
generalizeFirst=False,
maxstack=maxstack)
program = commandsToProgram(commands)
if self._width is not None:
assert not self._CFF2, "CFF2 does not allow encoding glyph width in CharString."
program.insert(0, otRound(self._width))
if not self._CFF2:
program.append('endchar')
charString = T2CharString(
program=program, private=private, globalSubrs=globalSubrs)
return charString
def getCharStrings(self,
num_masters,
private=None,
globalSubrs=None,
default_idx=0):
""" A command looks like:
[op_name, [
[source 0 arglist for op],
[source 1 arglist for op],
...
[source n arglist for op],
I am not optimizing this there, as that will be done when
the CFF2 Charstring is created in fontTools.varLib.build().
If I did, I would have to rearrange the arguments to:
[
[arg 0 for source 0 ... arg 0 for source n]
[arg 1 for source 0 ... arg 1 for source n]
...
[arg M for source 0 ... arg M for source n]
]
before calling specialize.
"""
t2List = []
merged_commands = self._commands
for i in range(num_masters):
commands = []
for op in merged_commands:
source_op = [op[0], op[1][i]]
commands.append(source_op)
program = commandsToProgram(commands)
if self._width is not None:
assert not self._CFF2, (
"CFF2 does not allow encoding glyph width in CharString.")
program.insert(0, otRound(self._width))
if not self._CFF2:
program.append('endchar')
charString = T2CharString(program=program,
private=private,
globalSubrs=globalSubrs)
t2List.append(charString)
# if default_idx is not 0, we need to move it to the right index.
if default_idx:
default_font_cs = t2List.pop(0)
t2List.insert(default_idx, default_font_cs)
return t2List
