def scaleGlyph(font, glyph, scale):
"""Scales the glyph, but keeps it centered around its original bounding
box."""
from fontTools.pens.recordingPen import RecordingPointPen
from fontTools.pens.transformPen import TransformPointPen
from fontTools.misc.transform import Identity
width = glyph.width
bbox = glyph.getBounds(font)
x = (bbox.xMin + bbox.xMax) / 2
y = (bbox.yMin + bbox.yMax) / 2
matrix = Identity
matrix = matrix.translate(-x * scale + x, -y * scale + y)
matrix = matrix.scale(scale)
rec = RecordingPointPen()
glyph.drawPoints(rec)
glyph.clearContours()
glyph.clearComponents()
pen = TransformPointPen(glyph.getPointPen(), matrix)
rec.replay(pen)
if width == 0:
glyph.width = width
return matrix
def filter(self, glyph):
matrix = self.context.matrix
if matrix == Identity or not (glyph or glyph.components or glyph.anchors):
return False # nothing to do
modified = self.context.modified
glyphSet = self.context.glyphSet
for component in glyph.components:
base_name = component.baseGlyph
if base_name in modified:
continue
base_glyph = glyphSet[base_name]
if self.include(base_glyph) and self.filter(base_glyph):
# base glyph is included but was not transformed yet; we
# call filter recursively until all the included bases are
# transformed, or there are no more components
modified.add(base_name)
rec = RecordingPointPen()
glyph.drawPoints(rec)
glyph.clearContours()
glyph.clearComponents()
outpen = glyph.getPointPen()
filterpen = TransformPointPen(outpen, matrix, modified)
rec.replay(filterpen)
# anchors are not drawn through the pen API,
# must be transformed separately
for a in glyph.anchors:
a.x, a.y = matrix.transformPoint((a.x, a.y))
return True
def test_record_and_replay(self):
pen = RecordingPointPen()
glyph = _TestGlyph()
glyph.drawPoints(pen)
pen.addComponent("a", (2, 0, 0, 2, -10, 5))
assert pen.value == [
("beginPath", (), {
"identifier": "abc"
}),
("addPoint", ((0.0, 0.0), "line", False, "start"), {
"identifier": "0000"
}),
("addPoint", ((0.0, 100.0), "line", False, None), {
"identifier": "0001"
}),
("addPoint", ((50.0, 75.0), None, False, None), {
"identifier": "0002"
}),
("addPoint", ((60.0, 50.0), None, False, None), {
"identifier": "0003"
}),
("addPoint", ((50.0, 0.0), "curve", True, "last"), {
"identifier": "0004"
}),
("endPath", (), {}),
("addComponent", ("a", (2, 0, 0, 2, -10, 5)), {}),
]
pen2 = RecordingPointPen()
pen.replay(pen2)
assert pen2.value == pen.value