def scalePatternMatrix(patternTransform):
# Scale the pattern by the scaling factor when exporting to bits. This is equivalent to
# scaling base space by the scaling factor.
patternScaling = Utilities.getScalingFactor()
if patternScaling != 1.0:
patternTransform = Quartz.CGAffineTransformConcat(
patternTransform,
Quartz.CGAffineTransformMakeScale(patternScaling, patternScaling))
return patternTransform
def testFunctions(self):
tf = Quartz.CGAffineTransformMake(1.5, 2.5, 3.5, 4.5, 5.5, 6.5)
self.assertIsInstance(tf, Quartz.CGAffineTransform)
self.assertEqual(tf.a, 1.5)
self.assertEqual(tf.b, 2.5)
self.assertEqual(tf.c, 3.5)
self.assertEqual(tf.d, 4.5)
self.assertEqual(tf.tx, 5.5)
self.assertEqual(tf.ty, 6.5)
tf = Quartz.CGAffineTransformMakeTranslation(2.5, 3.5)
self.assertIsInstance(tf, Quartz.CGAffineTransform)
self.assertEqual(tf.a, 1.0)
self.assertEqual(tf.b, 0.0)
self.assertEqual(tf.c, 0.0)
self.assertEqual(tf.d, 1.0)
self.assertEqual(tf.tx, 2.5)
self.assertEqual(tf.ty, 3.5)
tf = Quartz.CGAffineTransformMakeScale(2.5, 3.5)
self.assertIsInstance(tf, Quartz.CGAffineTransform)
self.assertEqual(tf.a, 2.5)
self.assertEqual(tf.b, 0.0)
self.assertEqual(tf.c, 0.0)
self.assertEqual(tf.d, 3.5)
self.assertEqual(tf.tx, 0.0)
self.assertEqual(tf.ty, 0.0)
tf = Quartz.CGAffineTransformMakeRotation(3.4)
self.assertIsInstance(tf, Quartz.CGAffineTransform)
self.assertResultHasType(Quartz.CGAffineTransformIsIdentity, objc._C_BOOL)
self.assertTrue(Quartz.CGAffineTransformIsIdentity(tf) is False)
self.assertTrue(
Quartz.CGAffineTransformIsIdentity(Quartz.CGAffineTransformIdentity) is True
)
tf = Quartz.CGAffineTransformTranslate(tf, 2.5, 3.5)
self.assertIsInstance(tf, Quartz.CGAffineTransform)
tf = Quartz.CGAffineTransformScale(tf, 5.5, 9.5)
self.assertIsInstance(tf, Quartz.CGAffineTransform)
tf = Quartz.CGAffineTransformRotate(tf, 0.8)
self.assertIsInstance(tf, Quartz.CGAffineTransform)
tf = Quartz.CGAffineTransformInvert(tf)
self.assertIsInstance(tf, Quartz.CGAffineTransform)
tf2 = Quartz.CGAffineTransformConcat(
tf, Quartz.CGAffineTransformMake(1.0, 1.0, 1.0, 1.0, 1.0, 1.0)
)
self.assertIsInstance(tf2, Quartz.CGAffineTransform)
self.assertResultHasType(Quartz.CGAffineTransformEqualToTransform, objc._C_BOOL)
self.assertTrue(Quartz.CGAffineTransformEqualToTransform(tf, tf2) is False)
self.assertTrue(Quartz.CGAffineTransformEqualToTransform(tf2, tf2) is True)
pt = Quartz.CGPointApplyAffineTransform((2.5, 3.5), tf)
self.assertIsInstance(pt, Quartz.CGPoint)
sz = Quartz.CGSizeApplyAffineTransform((2.5, 3.5), tf)
self.assertIsInstance(sz, Quartz.CGSize)
rct = Quartz.CGRectApplyAffineTransform(((2.5, 3.5), (4.5, 5.5)), tf)
self.assertIsInstance(rct, Quartz.CGRect)
def doPatternMatrix(context):
basePatternMatrix = Quartz.CGAffineTransformMakeScale(20, 20)
pattern = createRedBlackCheckerBoardPattern(basePatternMatrix)
if pattern is None:
print("Couldn't create pattern!")
return
# Create the pattern color space. Since the pattern
# itself has intrinsic color, the 'baseColorSpace' parameter
# to Quartz.CGColorSpaceCreatePattern must be None.
patternColorSpace = Quartz.CGColorSpaceCreatePattern(None)
Quartz.CGContextSetFillColorSpace(context, patternColorSpace)
del patternColorSpace
Quartz.CGContextTranslateCTM(context, 40, 40)
Quartz.CGContextSetPatternPhase(context,
scalePatternPhase(Quartz.CGSize(40, 40)))
# The pattern has intrinsic color so the color components array
# passed to Quartz.CGContextSetFillPattern is the alpha value used
# to composite the pattern cell.
# Paint the pattern first with alpha = 1.
color = [1]
Quartz.CGContextSetFillPattern(context, pattern, color)
# Rectangle 1.
Quartz.CGContextFillRect(context, Quartz.CGRectMake(0, 0, 100, 100))
Quartz.CGContextSaveGState(context)
if 1:
# Rectangle 2.
# Paint the pattern with 65% alpha.
color = [0.65]
Quartz.CGContextSetFillPattern(context, pattern, color)
# Rotate 45 degrees about the point (150, 50).
Quartz.CGContextTranslateCTM(context, 150.0, 50.0)
Quartz.CGContextRotateCTM(context, Utilities.DEGREES_TO_RADIANS(45.0))
Quartz.CGContextTranslateCTM(context, -50.0, -50.0)
# Rectangle 2. Patterns do not translate, scale or
# rotate with the CTM. You can see that the pattern
# tile of this filled rectangle is that of Rectangle
# 1.
Quartz.CGContextFillRect(context, Quartz.CGRectMake(0, 0, 100, 100))
# Release the pattern.
del pattern
Quartz.CGContextRestoreGState(context)
Quartz.CGContextSaveGState(context)
if 1:
# Rectangle 3. The pattern is rotated with the object.
# Rotate 45 degrees about the point 250, 50.
t = Quartz.CGAffineTransformMakeTranslation(250.0, 50.0)
t = Quartz.CGAffineTransformRotate(t,
Utilities.DEGREES_TO_RADIANS(45.0))
# Translate back to -50, -50.
t = Quartz.CGAffineTransformTranslate(t, -50.0, -50.0)
Quartz.CGContextConcatCTM(context, t)
# Make a new pattern that is equivalent to
# the old pattern but transformed to current user
# space. The order of transformations is crucial.
# This ordering is equivalent to using the same pattern
# matrix as before but transforming base space by t.
patTransform = Quartz.CGAffineTransformConcat(basePatternMatrix, t)
pattern = createRedBlackCheckerBoardPattern(patTransform)
color = [1]
Quartz.CGContextSetFillPattern(context, pattern, color)
# Release the pattern.
del pattern
Quartz.CGContextFillRect(context, Quartz.CGRectMake(0, 0, 100, 100))
Quartz.CGContextRestoreGState(context)
Quartz.CGContextSaveGState(context)
if 1:
# Rectangle 4. The pattern is scaled with the object.
# Translate and scale.
t = Quartz.CGAffineTransformMakeTranslation(320, 0)
t = Quartz.CGAffineTransformScale(t, 2, 2)
Quartz.CGContextConcatCTM(context, t)
# Make a new pattern that is equivalent to
# the old pattern but transformed to current user
# space. The order of transformations is crucial.
# This ordering is equivalent to using the same pattern
# matrix as before but transforming base space by t.
patTransform = Quartz.CGAffineTransformConcat(basePatternMatrix, t)
pattern = createRedBlackCheckerBoardPattern(patTransform)
color = [1]
Quartz.CGContextSetFillPattern(context, pattern, color)
# Release the pattern.
del pattern
Quartz.CGContextFillRect(context, Quartz.CGRectMake(0, 0, 100, 100))
Quartz.CGContextRestoreGState(context)
