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Add recordingPen.replayRecording

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This commit is contained in:
Behdad Esfahbod 2017-04-20 14:54:13 -07:00
parent 25e9d826ba
commit b4827ae965
1 changed files with 14 additions and 3 deletions
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17
Lib/fontTools/pens/recordingPen.py
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@ -4,7 +4,19 @@ from fontTools.misc.py23 import *
from fontTools.pens.basePen import AbstractPen, DecomposingPen from fontTools.pens.basePen import AbstractPen, DecomposingPen
__all__ = ["RecordingPen", "DecomposingRecordingPen"] __all__ = ["replayRecording", "RecordingPen", "DecomposingRecordingPen"]
def replayRecording(recording, pen):
"""Replay a recording, as produced by RecordingPen or DecomposingRecordingPen,
to a pen.
Note that recording does not have to be produced by those pens.
It can be any iterable of tuples of method name and tuple-of-arguments.
Likewise, pen can be any objects receiving those method calls.
"""
for operator,operands in recording:
getattr(pen, operator)(*operands)
class RecordingPen(AbstractPen): class RecordingPen(AbstractPen):
@ -47,8 +59,7 @@ class RecordingPen(AbstractPen):
def addComponent(self, glyphName, transformation): def addComponent(self, glyphName, transformation):
self.value.append(('addComponent', (glyphName, transformation))) self.value.append(('addComponent', (glyphName, transformation)))
def replay(self, pen): def replay(self, pen):
for operator,operands in self.value: replayRecording(self.value, pen)
getattr(pen, operator)(*operands)
class DecomposingRecordingPen(DecomposingPen, RecordingPen): class DecomposingRecordingPen(DecomposingPen, RecordingPen):