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import unittest
try:
from fontTools.pens.cocoaPen import CocoaPen
from AppKit import NSBezierPathElementMoveTo, NSBezierPathElementLineTo
from AppKit import NSBezierPathElementCurveTo, NSBezierPathElementClosePath
PATH_ELEMENTS = {
# NSBezierPathElement key desc
NSBezierPathElementMoveTo: 'moveto',
NSBezierPathElementLineTo: 'lineto',
NSBezierPathElementCurveTo: 'curveto',
NSBezierPathElementClosePath: 'close',
}
PYOBJC_AVAILABLE = True
except ImportError:
PYOBJC_AVAILABLE = False
def draw(pen):
pen.moveTo((50, 0))
pen.lineTo((50, 500))
pen.lineTo((200, 500))
pen.curveTo((350, 500), (450, 400), (450, 250))
pen.curveTo((450, 100), (350, 0), (200, 0))
pen.closePath()
def cocoaPathToString(path):
num_elements = path.elementCount()
output = []
for i in range(num_elements - 1):
elem_type, elem_points = path.elementAtIndex_associatedPoints_(i)
elem_type = PATH_ELEMENTS[elem_type]
path_points = " ".join([f"{p.x} {p.y}" for p in elem_points])
output.append(f"{elem_type} {path_points}")
return " ".join(output)
@unittest.skipUnless(PYOBJC_AVAILABLE, "pyobjc not installed")
class CocoaPenTest(unittest.TestCase):
def test_draw(self):
pen = CocoaPen(None)
draw(pen)
self.assertEqual(
"moveto 50.0 0.0 lineto 50.0 500.0 lineto 200.0 500.0 curveto 350.0 500.0 450.0 400.0 450.0 250.0 curveto 450.0 100.0 350.0 0.0 200.0 0.0 close ",
cocoaPathToString(pen.path)
)
def test_empty(self):
pen = CocoaPen(None)
self.assertEqual("", cocoaPathToString(pen.path))
if __name__ == '__main__':
import sys
sys.exit(unittest.main())
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