skiaPen.py

from fontTools.pens.basePen import BasePen

program = """void draw(SkCanvas* canvas) {
    SkPaint paint;
    SkPath path, dummy, result;
    SkOpBuilder builder;

    paint.setAntiAlias(true);
    path.setFillType(SkPath::kWinding_FillType);
    
    %s 
    
    Op(path, dummy, SkPathOp::kUnion_SkPathOp, &result);

    canvas->drawPath(result, paint);
    result.dump();
}
"""

class SkiaPen(BasePen):
    
    def __init__(self, glyphSet):
        BasePen.__init__(self, glyphSet)
        self._skia = []
    
    def _moveTo(self, xy):
        x, y = xy
        self._skia.append("path.moveTo(%s, %s);" % (x, y))
    
    def _lineTo(self, xy):
        x, y = xy
        self._skia.append("path.lineTo(%s, %s);" % (x, y))
    
    def _curveToOne(self, xy1, xy2, xy3):
        x1, y1 = xy1
        x2, y2 = xy2
        x3, y3 = xy3
        self._skia.append("path.cubicTo(%s, %s, %s, %s, %s, %s);" % (x1, y1, x2, y2, x3, y3))

    def closePath(self):
        self._skia.append("path.close();")
    
    def get(self):
        return program % "\n    ".join(self._skia)

g = CurrentGlyph()

pen = SkiaPen(g.font)
g.draw(pen)

print pen.get()