def svg2glif(svg,
name,
width=0,
height=0,
unicodes=None,
transform=None,
version=2):
""" Convert an SVG outline to a UFO glyph with given 'name', advance
'width' and 'height' (int), and 'unicodes' (list of int).
Return the resulting string in GLIF format (default: version 2).
If 'transform' is provided, apply a transformation matrix before the
conversion (must be tuple of 6 floats, or a FontTools Transform object).
"""
glyph = SimpleNamespace(width=width, height=height, unicodes=unicodes)
outline = SVGPath.fromstring(svg, transform=transform)
# writeGlyphToString takes a callable (usually a glyph's drawPoints
# method) that accepts a PointPen, however SVGPath currently only has
# a draw method that accepts a segment pen. We need to wrap the call
# with a converter pen.
def drawPoints(pointPen):
pen = SegmentToPointPen(pointPen)
outline.draw(pen)
return writeGlyphToString(name,
glyphObject=glyph,
drawPointsFunc=drawPoints,
formatVersion=version)
def dropEvent(self, event):
mimeData = event.mimeData()
if mimeData.hasUrls():
paths = mimeData.urls()
# pick just one image
path = paths[0].toLocalFile()
fileName = os.path.basename(path)
with open(path, "rb") as imgFile:
data = imgFile.read()
ext = os.path.splitext(path)[1][1:]
# TODO: make sure we cleanup properly when replacing an image with
# another
if ext.lower() == "glif":
otherGlyph = self._glyph.__class__()
try:
readGlyphFromString(data, otherGlyph,
otherGlyph.getPointPen())
except Exception as e:
errorReports.showCriticalException(e)
return
self._glyph.beginUndoGroup()
otherGlyph.drawPoints(self._glyph.getPointPen())
self._glyph.endUndoGroup()
return
if ext.lower() == "svg":
try:
svgPath = SVGPath.fromstring(data)
except Exception as e:
errorReports.showCriticalException(e)
return
self._glyph.beginUndoGroup()
svgPath.draw(self._glyph.getPen())
self._glyph.endUndoGroup()
return
if ext.lower() != "png":
# convert
img = QImage(path)
data = QByteArray()
buffer = QBuffer(data)
buffer.open(QIODevice.WriteOnly)
img.save(buffer, "PNG")
# format
data = bytearray(data)
fileName = "%s.png" % os.path.splitext(fileName)[0]
imageSet = self._glyph.font.images
try:
imageSet[fileName] = data
except Exception as e:
errorReports.showCriticalException(e)
return
image = self._glyph.instantiateImage()
image.fileName = fileName
self._glyph.image = image
event.setAccepted(True)
else:
super().dropEvent(event)
def test_transform(self):
pen = RecordingPen()
svg = SVGPath.fromstring(SVG_DATA,
transform=(1.0, 0, 0, -1.0, 0, 1000))
svg.draw(pen)
assert pen.value == [
("moveTo", ((100.0, 900.0), )), ("lineTo", ((300.0, 900.0), )),
("lineTo", ((200.0, 700.0), )), ("lineTo", ((100.0, 900.0), )),
("closePath", ()), ("moveTo", ((100.0, 800.0), )),
("curveTo", ((100.0, 900.0), (250.0, 900.0), (250.0, 800.0))),
("curveTo", ((250.0, 700.0), (400.0, 700.0), (400.0, 800.0))),
("endPath", ())
]
def test_transform(self):
pen = RecordingPen()
svg = SVGPath.fromstring(SVG_DATA,
transform=(1.0, 0, 0, -1.0, 0, 1000))
svg.draw(pen)
assert pen.value == [
("moveTo", ((100.0, 900.0),)),
("lineTo", ((300.0, 900.0),)),
("lineTo", ((200.0, 700.0),)),
("lineTo", ((100.0, 900.0),)),
("closePath", ()),
("moveTo", ((100.0, 800.0),)),
("curveTo", ((100.0, 900.0),
(250.0, 900.0),
(250.0, 800.0))),
("curveTo", ((250.0, 700.0),
(400.0, 700.0),
(400.0, 800.0))),
("endPath", ())
]
def potrace(self,
rect,
poargs=[],
invert=True,
pen_class=None,
context=None):
import skia
from PIL import Image
from pathlib import Path
from subprocess import run
from fontTools.svgLib import SVGPath
pc, ctx = self._get_renderer_state(pen_class, context)
img = pc.Precompose(self, rect, context=ctx)
pilimg = Image.fromarray(
img.convert(alphaType=skia.kUnpremul_AlphaType))
binpo = Path("bin/potrace")
if not binpo.exists():
binpo = Path(__file__).parent.parent.parent / "bin/potrace"
with tempfile.NamedTemporaryFile(prefix="coldtype_tmp",
suffix=".bmp") as tmp_bmp:
pilimg.save(tmp_bmp.name)
rargs = [str(binpo), "-s"]
if invert:
rargs.append("--invert")
rargs.extend([str(x) for x in poargs])
rargs.extend(["-o", "-", "--", tmp_bmp.name])
if False:
print(">>>", " ".join(rargs))
result = run(rargs, capture_output=True)
t = Transform()
t = t.scale(0.1, 0.1)
svgp = SVGPath.fromstring(result.stdout, transform=t)
dp = self.single_pen_class()
svgp.draw(dp)
return dp.f(0)
def svg2glif(svg, name, width=0, height=0, unicodes=None, transform=None,
version=2):
""" Convert an SVG outline to a UFO glyph with given 'name', advance
'width' and 'height' (int), and 'unicodes' (list of int).
Return the resulting string in GLIF format (default: version 2).
If 'transform' is provided, apply a transformation matrix before the
conversion (must be tuple of 6 floats, or a FontTools Transform object).
"""
glyph = SimpleNamespace(width=width, height=height, unicodes=unicodes)
outline = SVGPath.fromstring(svg, transform=transform)
# writeGlyphToString takes a callable (usually a glyph's drawPoints
# method) that accepts a PointPen, however SVGPath currently only has
# a draw method that accepts a segment pen. We need to wrap the call
# with a converter pen.
def drawPoints(pointPen):
pen = SegmentToPointPen(pointPen)
outline.draw(pen)
return writeGlyphToString(name,
glyphObject=glyph,
drawPointsFunc=drawPoints,
formatVersion=version)
def test_fromstring(self):
pen = RecordingPen()
svg = SVGPath.fromstring(SVG_DATA)
svg.draw(pen)
assert pen.value == EXPECTED_PEN_COMMANDS
def paste(self):
isGlyphTab = self.isGlyphTab()
widget = self.stackWidget.currentWidget()
if isGlyphTab:
glyphs = (widget.activeGlyph(),)
else:
selection = self.glyphCellView.selection()
glyphs = widget.glyphsForIndexes(selection)
clipboard = QApplication.clipboard()
mimeData = clipboard.mimeData()
if mimeData.hasFormat("application/x-trufont-glyph-data"):
data = pickle.loads(mimeData.data("application/x-trufont-glyph-data"))
if len(data) == len(glyphs):
for pickled, glyph in zip(data, glyphs):
if isGlyphTab:
pasteGlyph = glyph.__class__()
pasteGlyph.deserialize(pickled)
# TODO: if we serialize selected state, we don't need
# to do this
pasteGlyph.selected = True
if (
len(pasteGlyph)
or len(pasteGlyph.components)
or len(pasteGlyph.anchors)
):
glyph.beginUndoGroup()
glyph.holdNotifications()
count = len(glyph)
pen = glyph.getPointPen()
# contours, components
pasteGlyph.drawPoints(pen)
for contour in glyph[count:]:
contour.selected = True
# anchors
for anchor in pasteGlyph.anchors:
glyph.appendAnchor(dict(anchor))
# guidelines
for guideline in pasteGlyph.guidelines:
glyph.appendGuideline(dict(guideline))
glyph.releaseHeldNotifications()
glyph.endUndoGroup()
else:
glyph.deserialize(pickled)
return
if mimeData.hasFormat("image/svg+xml"):
if len(glyphs) == 1:
glyph = glyphs[0]
try:
svgPath = SVGPath.fromstring(mimeData.data("image/svg+xml"))
except Exception:
pass
else:
glyph.beginUndoGroup()
if not isGlyphTab:
glyph.clear()
svgPath.draw(glyph.getPen())
glyph.endUndoGroup()
return
if mimeData.hasText():
if len(glyphs) == 1:
glyph = glyphs[0]
otherGlyph = glyph.__class__()
text = mimeData.text()
try:
readGlyphFromString(text, otherGlyph, otherGlyph.getPointPen())
except Exception:
try:
svgPath = SVGPath.fromstring(text)
svgPath.draw(otherGlyph.getPen())
except Exception:
return
glyph.beginUndoGroup()
if not isGlyphTab:
glyph.clear()
otherGlyph.drawPoints(glyph.getPointPen())
glyph.endUndoGroup()
def test_fromstring(self):
pen = RecordingPen()
svg = SVGPath.fromstring(SVG_DATA)
svg.draw(pen)
assert pen.value == EXPECTED_PEN_COMMANDS