def test_add_transform(self):
"""Test add_TRANSFORM syntax for quickly composing known transforms"""
tr1 = Transform()
tr1.add_scale(5.0, 1.0)
self.assertEqual(str(tr1), 'scale(5, 1)')
tr1.add_translate(10, 10)
self.assertEqual(str(tr1), 'matrix(5 0 0 1 50 10)')
def test_update_consistant(self):
"""Update doesn't keep callbacks around"""
elem = self.svg.getElementById('D')
tr_a = Transform(translate=(10, 10))
tr_b = Transform(translate=(-20, 15))
elem.transform = tr_a
elem.transform = tr_b
self.assertEqual(str(elem.transform), 'translate(-20, 15)')
tr_a.add_translate(10, 10)
self.assertEqual(str(elem.transform), 'translate(-20, 15)')
elem.set('transform', None)
self.assertEqual(elem.get('transform'), None)
def test_transformation(self):
t = Transform(matrix=((1, 2, 3), (4, 5, 6)))
first = Vector2d()
prev = Vector2d(31, 97)
prev_prev = Vector2d(5, 7)
for Cmd in (Line, Move, Curve, Smooth, Quadratic, TepidQuadratic, Arc):
random_seg = self.get_random_cmd(Cmd)
self.assertTrue(random_seg.transform(t)
is not random_seg) # transform returns copy
self.assertEqual(
random_seg.transform(t).name,
Cmd.name) # transform does not change Command type
T = Transform()
T.add_translate(10, 20)
A = [
T.apply_to_point(p)
for p in random_seg.control_points(first, prev, prev_prev)
]
first2, prev2, prev_prev2 = (T.apply_to_point(p)
for p in (first, prev, prev_prev))
B = list(
random_seg.translate(Vector2d(10, 20)).control_points(
first2, prev2, prev_prev2))
self.assertAlmostTuple(A, B)
T = Transform()
T.add_scale(10, 20)
A = [
T.apply_to_point(p)
for p in random_seg.control_points(first, prev, prev_prev)
]
first2, prev2, prev_prev2 = (T.apply_to_point(p)
for p in (first, prev, prev_prev))
B = list(
random_seg.scale(
(10, 20)).control_points(first2, prev2, prev_prev2))
self.assertAlmostTuple(A, B)
T = Transform()
T.add_rotate(35, 15, 28)
A = [
T.apply_to_point(p)
for p in random_seg.control_points(first, prev, prev_prev)
]
first2, prev2, prev_prev2 = (T.apply_to_point(p)
for p in (first, prev, prev_prev))
B = list(
random_seg.rotate(35, Vector2d(15, 28)).control_points(
first2, prev2, prev_prev2))
self.assertAlmostTuple(A, B)
def effect(self):
opt = self.options
if not opt.placeholderid:
raise inkex.AbortExtension('Please enter the placeholder ID')
elif not opt.qrcodeid:
raise inkex.AbortExtension('Please enter the QRCode ID')
placeholder = self.svg.getElementById(opt.placeholderid)
qrcode = self.svg.getElementById(opt.qrcodeid)
if placeholder is None or qrcode is None:
# Delete the generated qrcode
qrcode.getparent().remove(qrcode)
return
# Reset scale before processing
qrcode.set('transform', 'scale(1,1)')
# Get scaling factors
scalex = placeholder.bounding_box().width / qrcode.bounding_box().width
scaley = placeholder.bounding_box().height / qrcode.bounding_box().height
# Apply scaling and translating
tr = Transform()
tr.add_translate(placeholder.bounding_box().left, placeholder.bounding_box().top)
qrcode.set('transform', tr)
tr.add_scale(scalex, scaley)
qrcode.set('transform', tr)
# Move qrcode inplace of the placeholder
placeholder.getparent().append(qrcode)
# Delete the placeholder
placeholder.getparent().remove(placeholder)
