# recordingPen

Pen recording operations that can be accessed or replayed.

fontTools.pens.recordingPen.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.

class fontTools.pens.recordingPen.RecordingPen

  Bases: `AbstractPen`

  Pen recording operations that can be accessed or replayed.

  The recording can be accessed as pen.value; or replayed using pen.replay(otherPen).

  Example:

        from fontTools.ttLib import TTFont
        from fontTools.pens.recordingPen import RecordingPen

        glyph_name = 'dollar'
        font_path = 'MyFont.otf'

        font = TTFont(font_path)
        glyphset = font.getGlyphSet()
        glyph = glyphset[glyph_name]

        pen = RecordingPen()
        glyph.draw(pen)
        print(pen.value)

  moveTo(p0)
  lineTo(p1)
  qCurveTo(*points)
  curveTo(*points)
  closePath()
  endPath()
  addComponent(glyphName, transformation)
  addVarComponent(glyphName, transformation, location)
  replay(pen)
  draw(pen)

class fontTools.pens.recordingPen.DecomposingRecordingPen(glyphSet, *args, skipMissingComponents=None, reverseFlipped=False, **kwargs)

  Bases: `DecomposingPen`, `RecordingPen`

  Same as RecordingPen, except that it doesn’t keep components as references, but draws them decomposed as regular contours.

  The constructor takes a required ‘glyphSet’ positional argument, a dictionary of glyph objects (i.e. with a ‘draw’ method) keyed by thir name; other arguments are forwarded to the DecomposingPen’s constructor:

      >>> class SimpleGlyph(object):
      ...     def draw(self, pen):
      ...         pen.moveTo((0, 0))
      ...         pen.curveTo((1, 1), (2, 2), (3, 3))
      ...         pen.closePath()
      >>> class CompositeGlyph(object):
      ...     def draw(self, pen):
      ...         pen.addComponent('a', (1, 0, 0, 1, -1, 1))
      >>> class MissingComponent(object):
      ...     def draw(self, pen):
      ...         pen.addComponent('foobar', (1, 0, 0, 1, 0, 0))
      >>> class FlippedComponent(object):
      ...     def draw(self, pen):
      ...         pen.addComponent('a', (-1, 0, 0, 1, 0, 0))
      >>> glyphSet = {
      ...    'a': SimpleGlyph(),
      ...    'b': CompositeGlyph(),
      ...    'c': MissingComponent(),
      ...    'd': FlippedComponent(),
      ... }
      >>> for name, glyph in sorted(glyphSet.items()):
      ...     pen = DecomposingRecordingPen(glyphSet)
      ...     try:
      ...         glyph.draw(pen)
      ...     except pen.MissingComponentError:
      ...         pass
      ...     print("{}: {}".format(name, pen.value))
      a: [('moveTo', ((0, 0),)), ('curveTo', ((1, 1), (2, 2), (3, 3))), ('closePath', ())]
      b: [('moveTo', ((-1, 1),)), ('curveTo', ((0, 2), (1, 3), (2, 4))), ('closePath', ())]
      c: []
      d: [('moveTo', ((0, 0),)), ('curveTo', ((-1, 1), (-2, 2), (-3, 3))), ('closePath', ())]

      >>> for name, glyph in sorted(glyphSet.items()):
      ...     pen = DecomposingRecordingPen(
      ...         glyphSet, skipMissingComponents=True, reverseFlipped=True,
      ...     )
      ...     glyph.draw(pen)
      ...     print("{}: {}".format(name, pen.value))
      a: [('moveTo', ((0, 0),)), ('curveTo', ((1, 1), (2, 2), (3, 3))), ('closePath', ())]
      b: [('moveTo', ((-1, 1),)), ('curveTo', ((0, 2), (1, 3), (2, 4))), ('closePath', ())]
      c: []
      d: [('moveTo', ((0, 0),)), ('lineTo', ((-3, 3),)), ('curveTo', ((-2, 2), (-1, 1), (0, 0))), ('closePath', ())]

  skipMissingComponents = False

class fontTools.pens.recordingPen.DecomposingRecordingPointPen(glyphSet, *args, skipMissingComponents=None, reverseFlipped=False, **kwargs)

  Bases: `DecomposingPointPen`, `RecordingPointPen`

  Same as RecordingPointPen, except that it doesn’t keep components as references, but draws them decomposed as regular contours.

  The constructor takes a required ‘glyphSet’ positional argument, a dictionary of pointPen-drawable glyph objects (i.e. with a ‘drawPoints’ method) keyed by thir name; other arguments are forwarded to the DecomposingPointPen’s constructor:

      >>> from pprint import pprint
      >>> class SimpleGlyph(object):
      ...     def drawPoints(self, pen):
      ...         pen.beginPath()
      ...         pen.addPoint((0, 0), "line")
      ...         pen.addPoint((1, 1))
      ...         pen.addPoint((2, 2))
      ...         pen.addPoint((3, 3), "curve")
      ...         pen.endPath()
      >>> class CompositeGlyph(object):
      ...     def drawPoints(self, pen):
      ...         pen.addComponent('a', (1, 0, 0, 1, -1, 1))
      >>> class MissingComponent(object):
      ...     def drawPoints(self, pen):
      ...         pen.addComponent('foobar', (1, 0, 0, 1, 0, 0))
      >>> class FlippedComponent(object):
      ...     def drawPoints(self, pen):
      ...         pen.addComponent('a', (-1, 0, 0, 1, 0, 0))
      >>> glyphSet = {
      ...    'a': SimpleGlyph(),
      ...    'b': CompositeGlyph(),
      ...    'c': MissingComponent(),
      ...    'd': FlippedComponent(),
      ... }
      >>> for name, glyph in sorted(glyphSet.items()):
      ...     pen = DecomposingRecordingPointPen(glyphSet)
      ...     try:
      ...         glyph.drawPoints(pen)
      ...     except pen.MissingComponentError:
      ...         pass
      ...     pprint({name: pen.value})
      {'a': [('beginPath', (), {}),
             ('addPoint', ((0, 0), 'line', False, None), {}),
             ('addPoint', ((1, 1), None, False, None), {}),
             ('addPoint', ((2, 2), None, False, None), {}),
             ('addPoint', ((3, 3), 'curve', False, None), {}),
             ('endPath', (), {})]}
      {'b': [('beginPath', (), {}),
             ('addPoint', ((-1, 1), 'line', False, None), {}),
             ('addPoint', ((0, 2), None, False, None), {}),
             ('addPoint', ((1, 3), None, False, None), {}),
             ('addPoint', ((2, 4), 'curve', False, None), {}),
             ('endPath', (), {})]}
      {'c': []}
      {'d': [('beginPath', (), {}),
             ('addPoint', ((0, 0), 'line', False, None), {}),
             ('addPoint', ((-1, 1), None, False, None), {}),
             ('addPoint', ((-2, 2), None, False, None), {}),
             ('addPoint', ((-3, 3), 'curve', False, None), {}),
             ('endPath', (), {})]}

      >>> for name, glyph in sorted(glyphSet.items()):
      ...     pen = DecomposingRecordingPointPen(
      ...         glyphSet, skipMissingComponents=True, reverseFlipped=True,
      ...     )
      ...     glyph.drawPoints(pen)
      ...     pprint({name: pen.value})
      {'a': [('beginPath', (), {}),
             ('addPoint', ((0, 0), 'line', False, None), {}),
             ('addPoint', ((1, 1), None, False, None), {}),
             ('addPoint', ((2, 2), None, False, None), {}),
             ('addPoint', ((3, 3), 'curve', False, None), {}),
             ('endPath', (), {})]}
      {'b': [('beginPath', (), {}),
             ('addPoint', ((-1, 1), 'line', False, None), {}),
             ('addPoint', ((0, 2), None, False, None), {}),
             ('addPoint', ((1, 3), None, False, None), {}),
             ('addPoint', ((2, 4), 'curve', False, None), {}),
             ('endPath', (), {})]}
      {'c': []}
      {'d': [('beginPath', (), {}),
             ('addPoint', ((0, 0), 'curve', False, None), {}),
             ('addPoint', ((-3, 3), 'line', False, None), {}),
             ('addPoint', ((-2, 2), None, False, None), {}),
             ('addPoint', ((-1, 1), None, False, None), {}),
             ('endPath', (), {})]}

  skipMissingComponents = False

class fontTools.pens.recordingPen.RecordingPointPen

  Bases: `AbstractPointPen`

  PointPen recording operations that can be accessed or replayed.

  The recording can be accessed as pen.value; or replayed using pointPen.replay(otherPointPen).

  Example:

        from defcon import Font
        from fontTools.pens.recordingPen import RecordingPointPen

        glyph_name = 'a'
        font_path = 'MyFont.ufo'

        font = Font(font_path)
        glyph = font[glyph_name]

        pen = RecordingPointPen()
        glyph.drawPoints(pen)
        print(pen.value)

        new_glyph = font.newGlyph('b')
        pen.replay(new_glyph.getPointPen())

  beginPath(identifier=None, **kwargs)
  endPath()
  addPoint(pt, segmentType=None, smooth=False, name=None, identifier=None, **kwargs)
  addComponent(baseGlyphName, transformation, identifier=None, **kwargs)
  addVarComponent(baseGlyphName, transformation, location, identifier=None, **kwargs)
  replay(pointPen)
  drawPoints(pointPen)

fontTools.pens.recordingPen.lerpRecordings(recording1, recording2, factor=0.5)

  Linearly interpolate between two recordings. The recordings must be decomposed, i.e. they must not contain any components.

  Factor is typically between 0 and 1. 0 means the first recording, 1 means the second recording, and 0.5 means the average of the two recordings. Other values are possible, and can be useful to extrapolate. Defaults to 0.5.

  Returns a generator with the new recording.