def test_addComponent_decompose_with_transform():
pen = SVGPathPen(glyphSet={"a": DummyGlyph()})
pen.addComponent("a", Affine2D(2, 0, 0, 2, 0, 0))
assert pen.path.d == (
"M0,0 L0,20 L20,20 L20,0 Z "
"M0,30 C0,40 20,40 20,30 Z "
"M0,-10 Q0,-16 3,-18 Q6,-20 10,-20 Q14,-20 17,-18 Q20,-16 20,-10")
def test_addComponent_decompose():
pen = SVGPathPen(glyphSet={"a": DummyGlyph()})
pen.addComponent("a", Affine2D.identity())
assert pen.path.d == (
"M0,0 L0,10 L10,10 L10,0 Z "
"M0,15 C0,20 10,20 10,15 Z "
"M0,-5 Q0,-8 1.5,-9 Q3,-10 5,-10 Q7,-10 8.5,-9 Q10,-8 10,-5")
def test_draw_onto_existing_path():
path = SVGPath(d="M0,0 L0,10 L10,10 L10,0 Z")
pen = SVGPathPen(path=path)
pen.moveTo((0, 15))
pen.lineTo((5, 20))
pen.lineTo((10, 15))
pen.closePath()
assert path.d == "M0,0 L0,10 L10,10 L10,0 Z M0,15 L5,20 L10,15 Z"
def _draw_svg_path(
svg_path: etree.Element,
glyph_set: ttLib.ttFont._TTGlyphSet,
glyph_name: str,
font_to_vbox: Affine2D,
):
# use glyph set to resolve references in composite glyphs
svg_pen = SVGPathPen(glyph_set)
# wrap svg pen with "filter" pen mapping coordinates from UPEM to SVG space
transform_pen = transformPen.TransformPen(svg_pen, font_to_vbox)
glyph = glyph_set[glyph_name]
glyph.draw(transform_pen)
svg_path.attrib["d"] = svg_pen.path.d
def _draw_svg_path(
svg_path: etree.Element,
view_box: Rect,
ttfont: ttLib.TTFont,
glyph_name: str,
glyph_set: ttLib.ttFont._TTGlyphSet,
):
# use glyph set to resolve references in composite glyphs
svg_pen = SVGPathPen(glyph_set)
# wrap svg pen with "filter" pen mapping coordinates from UPEM to SVG space
upem_to_vbox = _emsquare_to_viewbox(ttfont["head"].unitsPerEm, view_box)
transform_pen = transformPen.TransformPen(svg_pen, upem_to_vbox)
glyph = glyph_set[glyph_name]
glyph.draw(transform_pen)
svg_path.attrib["d"] = svg_pen.path.d
def test_roundtrip_path_with_pen(d):
path = SVGPath(d=d)
pen = SVGPathPen()
draw_svg_path(path, pen)
assert pen.path.d == d
def test_addComponent_missing():
pen = SVGPathPen(glyphSet={"a": DummyGlyph()})
with pytest.raises(KeyError):
pen.addComponent("b", Affine2D.identity())
def test_draw_svg_close_subpaths():
path = SVGPath(d="M0,0 L0,10 L10,10 L10,0 M12,0 L12,10 L22,10 L22,0")
pen = SVGPathPen()
draw_svg_path(path, pen, close_subpaths=True)
assert pen.path.d == "M0,0 L0,10 L10,10 L10,0 Z M12,0 L12,10 L22,10 L22,0 Z"