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import os
import unittest
import struct
from fontTools import ttLib
from fontTools.misc.testTools import TestCase
from fontTools.pens.ttGlyphPen import TTGlyphPen, MAX_F2DOT14
class TTGlyphPenTest(TestCase):
def runEndToEnd(self, filename):
font = ttLib.TTFont()
ttx_path = os.path.join(
os.path.abspath(os.path.dirname(os.path.realpath(__file__))),
'..', 'ttLib', 'data', filename)
font.importXML(ttx_path)
glyphSet = font.getGlyphSet()
glyfTable = font['glyf']
pen = TTGlyphPen(font.getGlyphSet())
for name in font.getGlyphOrder():
oldGlyph = glyphSet[name]
oldGlyph.draw(pen)
oldGlyph = oldGlyph._glyph
newGlyph = pen.glyph()
if hasattr(oldGlyph, 'program'):
newGlyph.program = oldGlyph.program
self.assertEqual(
oldGlyph.compile(glyfTable), newGlyph.compile(glyfTable))
def test_e2e_linesAndSimpleComponents(self):
self.runEndToEnd('TestTTF-Regular.ttx')
def test_e2e_curvesAndComponentTransforms(self):
self.runEndToEnd('TestTTFComplex-Regular.ttx')
def test_moveTo_errorWithinContour(self):
pen = TTGlyphPen(None)
pen.moveTo((0, 0))
with self.assertRaises(AssertionError):
pen.moveTo((1, 0))
def test_closePath_ignoresAnchors(self):
pen = TTGlyphPen(None)
pen.moveTo((0, 0))
pen.closePath()
self.assertFalse(pen.points)
self.assertFalse(pen.types)
self.assertFalse(pen.endPts)
def test_endPath_sameAsClosePath(self):
pen = TTGlyphPen(None)
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((1, 0))
pen.closePath()
closePathGlyph = pen.glyph()
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((1, 0))
pen.endPath()
endPathGlyph = pen.glyph()
self.assertEqual(closePathGlyph, endPathGlyph)
def test_glyph_errorOnUnendedContour(self):
pen = TTGlyphPen(None)
pen.moveTo((0, 0))
with self.assertRaises(AssertionError):
pen.glyph()
def test_glyph_decomposes(self):
componentName = 'a'
glyphSet = {}
pen = TTGlyphPen(glyphSet)
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((1, 0))
pen.closePath()
glyphSet[componentName] = _TestGlyph(pen.glyph())
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((1, 0))
pen.closePath()
pen.addComponent(componentName, (1, 0, 0, 1, 2, 0))
pen.addComponent("missing", (1, 0, 0, 1, 0, 0)) # skipped
compositeGlyph = pen.glyph()
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((1, 0))
pen.closePath()
pen.moveTo((2, 0))
pen.lineTo((2, 1))
pen.lineTo((3, 0))
pen.closePath()
plainGlyph = pen.glyph()
self.assertEqual(plainGlyph, compositeGlyph)
def test_remove_extra_move_points(self):
pen = TTGlyphPen(None)
pen.moveTo((0, 0))
pen.lineTo((100, 0))
pen.qCurveTo((100, 50), (50, 100), (0, 0))
pen.closePath()
self.assertEqual(len(pen.points), 4)
self.assertEqual(pen.points[0], (0, 0))
def test_keep_move_point(self):
pen = TTGlyphPen(None)
pen.moveTo((0, 0))
pen.lineTo((100, 0))
pen.qCurveTo((100, 50), (50, 100), (30, 30))
# when last and move pts are different, closePath() implies a lineTo
pen.closePath()
self.assertEqual(len(pen.points), 5)
self.assertEqual(pen.points[0], (0, 0))
def test_keep_duplicate_end_point(self):
pen = TTGlyphPen(None)
pen.moveTo((0, 0))
pen.lineTo((100, 0))
pen.qCurveTo((100, 50), (50, 100), (0, 0))
pen.lineTo((0, 0)) # the duplicate point is not removed
pen.closePath()
self.assertEqual(len(pen.points), 5)
self.assertEqual(pen.points[0], (0, 0))
def test_within_range_component_transform(self):
componentName = 'a'
glyphSet = {}
pen = TTGlyphPen(glyphSet)
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((1, 0))
pen.closePath()
glyphSet[componentName] = _TestGlyph(pen.glyph())
pen.addComponent(componentName, (1.5, 0, 0, 1, 0, 0))
pen.addComponent(componentName, (1, 0, 0, -1.5, 0, 0))
compositeGlyph = pen.glyph()
pen.addComponent(componentName, (1.5, 0, 0, 1, 0, 0))
pen.addComponent(componentName, (1, 0, 0, -1.5, 0, 0))
expectedGlyph = pen.glyph()
self.assertEqual(expectedGlyph, compositeGlyph)
def test_clamp_to_almost_2_component_transform(self):
componentName = 'a'
glyphSet = {}
pen = TTGlyphPen(glyphSet)
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((1, 0))
pen.closePath()
glyphSet[componentName] = _TestGlyph(pen.glyph())
pen.addComponent(componentName, (1.99999, 0, 0, 1, 0, 0))
pen.addComponent(componentName, (1, 2, 0, 1, 0, 0))
pen.addComponent(componentName, (1, 0, 2, 1, 0, 0))
pen.addComponent(componentName, (1, 0, 0, 2, 0, 0))
pen.addComponent(componentName, (-2, 0, 0, -2, 0, 0))
compositeGlyph = pen.glyph()
almost2 = MAX_F2DOT14 # 0b1.11111111111111
pen.addComponent(componentName, (almost2, 0, 0, 1, 0, 0))
pen.addComponent(componentName, (1, almost2, 0, 1, 0, 0))
pen.addComponent(componentName, (1, 0, almost2, 1, 0, 0))
pen.addComponent(componentName, (1, 0, 0, almost2, 0, 0))
pen.addComponent(componentName, (-2, 0, 0, -2, 0, 0))
expectedGlyph = pen.glyph()
self.assertEqual(expectedGlyph, compositeGlyph)
def test_out_of_range_transform_decomposed(self):
componentName = 'a'
glyphSet = {}
pen = TTGlyphPen(glyphSet)
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((1, 0))
pen.closePath()
glyphSet[componentName] = _TestGlyph(pen.glyph())
pen.addComponent(componentName, (3, 0, 0, 2, 0, 0))
pen.addComponent(componentName, (1, 0, 0, 1, -1, 2))
pen.addComponent(componentName, (2, 0, 0, -3, 0, 0))
compositeGlyph = pen.glyph()
pen.moveTo((0, 0))
pen.lineTo((0, 2))
pen.lineTo((3, 0))
pen.closePath()
pen.moveTo((-1, 2))
pen.lineTo((-1, 3))
pen.lineTo((0, 2))
pen.closePath()
pen.moveTo((0, 0))
pen.lineTo((0, -3))
pen.lineTo((2, 0))
pen.closePath()
expectedGlyph = pen.glyph()
self.assertEqual(expectedGlyph, compositeGlyph)
def test_no_handle_overflowing_transform(self):
componentName = 'a'
glyphSet = {}
pen = TTGlyphPen(glyphSet, handleOverflowingTransforms=False)
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((1, 0))
pen.closePath()
baseGlyph = pen.glyph()
glyphSet[componentName] = _TestGlyph(baseGlyph)
pen.addComponent(componentName, (3, 0, 0, 1, 0, 0))
compositeGlyph = pen.glyph()
self.assertEqual(compositeGlyph.components[0].transform,
((3, 0), (0, 1)))
with self.assertRaises(struct.error):
compositeGlyph.compile({'a': baseGlyph})
def assertGlyphBoundsEqual(self, glyph, bounds):
self.assertEqual((glyph.xMin, glyph.yMin, glyph.xMax, glyph.yMax), bounds)
def test_round_float_coordinates_and_component_offsets(self):
glyphSet = {}
pen = TTGlyphPen(glyphSet)
pen.moveTo((0, 0))
pen.lineTo((0, 1))
pen.lineTo((367.6, 0))
pen.closePath()
simpleGlyph = pen.glyph()
simpleGlyph.recalcBounds(glyphSet)
self.assertGlyphBoundsEqual(simpleGlyph, (0, 0, 368, 1))
componentName = 'a'
glyphSet[componentName] = simpleGlyph
pen.addComponent(componentName, (1, 0, 0, 1, -86.4, 0))
compositeGlyph = pen.glyph()
compositeGlyph.recalcBounds(glyphSet)
self.assertGlyphBoundsEqual(compositeGlyph, (-86, 0, 282, 1))
def test_scaled_component_bounds(self):
glyphSet = {}
pen = TTGlyphPen(glyphSet)
pen.moveTo((-231, 939))
pen.lineTo((-55, 939))
pen.lineTo((-55, 745))
pen.lineTo((-231, 745))
pen.closePath()
glyphSet["gravecomb"] = gravecomb = pen.glyph()
pen = TTGlyphPen(glyphSet)
pen.moveTo((-278, 939))
pen.lineTo((8, 939))
pen.lineTo((8, 745))
pen.lineTo((-278, 745))
pen.closePath()
glyphSet["circumflexcomb"] = circumflexcomb = pen.glyph()
pen = TTGlyphPen(glyphSet)
pen.addComponent("circumflexcomb", (1, 0, 0, 1, 0, 0))
pen.addComponent("gravecomb", (0.9, 0, 0, 0.9, 198, 180))
glyphSet["uni0302_uni0300"] = uni0302_uni0300 = pen.glyph()
uni0302_uni0300.recalcBounds(glyphSet)
self.assertGlyphBoundsEqual(uni0302_uni0300, (-278, 745, 148, 1025))
class _TestGlyph(object):
def __init__(self, glyph):
self.coordinates = glyph.coordinates
def draw(self, pen):
pen.moveTo(self.coordinates[0])
for point in self.coordinates[1:]:
pen.lineTo(point)
pen.closePath()
if __name__ == '__main__':
import sys
sys.exit(unittest.main())
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