from fontTools.pens.recordingPen import RecordingPen from fontTools.svgLib import parse_path import pytest @pytest.mark.parametrize( "pathdef, expected", [ # Examples from the SVG spec ( "M 100 100 L 300 100 L 200 300 z", [ ("moveTo", ((100.0, 100.0),)), ("lineTo", ((300.0, 100.0),)), ("lineTo", ((200.0, 300.0),)), ("lineTo", ((100.0, 100.0),)), ("closePath", ()), ] ), # for Z command behavior when there is multiple subpaths ( "M 0 0 L 50 20 M 100 100 L 300 100 L 200 300 z", [ ("moveTo", ((0.0, 0.0),)), ("lineTo", ((50.0, 20.0),)), ("endPath", ()), ("moveTo", ((100.0, 100.0),)), ("lineTo", ((300.0, 100.0),)), ("lineTo", ((200.0, 300.0),)), ("lineTo", ((100.0, 100.0),)), ("closePath", ()), ] ), ( "M100,200 C100,100 250,100 250,200 S400,300 400,200", [ ("moveTo", ((100.0, 200.0),)), ("curveTo", ((100.0, 100.0), (250.0, 100.0), (250.0, 200.0))), ("curveTo", ((250.0, 300.0), (400.0, 300.0), (400.0, 200.0))), ("endPath", ()), ] ), ( "M100,200 C100,100 400,100 400,200", [ ("moveTo", ((100.0, 200.0),)), ("curveTo", ((100.0, 100.0), (400.0, 100.0), (400.0, 200.0))), ("endPath", ()), ] ), ( "M100,500 C25,400 475,400 400,500", [ ("moveTo", ((100.0, 500.0),)), ("curveTo", ((25.0, 400.0), (475.0, 400.0), (400.0, 500.0))), ("endPath", ()), ] ), ( "M100,800 C175,700 325,700 400,800", [ ("moveTo", ((100.0, 800.0),)), ("curveTo", ((175.0, 700.0), (325.0, 700.0), (400.0, 800.0))), ("endPath", ()), ] ), ( "M600,200 C675,100 975,100 900,200", [ ("moveTo", ((600.0, 200.0),)), ("curveTo", ((675.0, 100.0), (975.0, 100.0), (900.0, 200.0))), ("endPath", ()), ] ), ( "M600,500 C600,350 900,650 900,500", [ ("moveTo", ((600.0, 500.0),)), ("curveTo", ((600.0, 350.0), (900.0, 650.0), (900.0, 500.0))), ("endPath", ()), ] ), ( "M600,800 C625,700 725,700 750,800 S875,900 900,800", [ ("moveTo", ((600.0, 800.0),)), ("curveTo", ((625.0, 700.0), (725.0, 700.0), (750.0, 800.0))), ("curveTo", ((775.0, 900.0), (875.0, 900.0), (900.0, 800.0))), ("endPath", ()), ] ), ( "M200,300 Q400,50 600,300 T1000,300", [ ("moveTo", ((200.0, 300.0),)), ("qCurveTo", ((400.0, 50.0), (600.0, 300.0))), ("qCurveTo", ((800.0, 550.0), (1000.0, 300.0))), ("endPath", ()), ] ), # End examples from SVG spec # Relative moveto ( "M 0 0 L 50 20 m 50 80 L 300 100 L 200 300 z", [ ("moveTo", ((0.0, 0.0),)), ("lineTo", ((50.0, 20.0),)), ("endPath", ()), ("moveTo", ((100.0, 100.0),)), ("lineTo", ((300.0, 100.0),)), ("lineTo", ((200.0, 300.0),)), ("lineTo", ((100.0, 100.0),)), ("closePath", ()), ] ), # Initial smooth and relative curveTo ( "M100,200 s 150,-100 150,0", [ ("moveTo", ((100.0, 200.0),)), ("curveTo", ((100.0, 200.0), (250.0, 100.0), (250.0, 200.0))), ("endPath", ()), ] ), # Initial smooth and relative qCurveTo ( "M100,200 t 150,0", [ ("moveTo", ((100.0, 200.0),)), ("qCurveTo", ((100.0, 200.0), (250.0, 200.0))), ("endPath", ()), ] ), # relative l command ( "M 100 100 L 300 100 l -100 200 z", [ ("moveTo", ((100.0, 100.0),)), ("lineTo", ((300.0, 100.0),)), ("lineTo", ((200.0, 300.0),)), ("lineTo", ((100.0, 100.0),)), ("closePath", ()), ] ), # relative q command ( "M200,300 q200,-250 400,0", [ ("moveTo", ((200.0, 300.0),)), ("qCurveTo", ((400.0, 50.0), (600.0, 300.0))), ("endPath", ()), ] ), # absolute H command ( "M 100 100 H 300 L 200 300 z", [ ("moveTo", ((100.0, 100.0),)), ("lineTo", ((300.0, 100.0),)), ("lineTo", ((200.0, 300.0),)), ("lineTo", ((100.0, 100.0),)), ("closePath", ()), ] ), # relative h command ( "M 100 100 h 200 L 200 300 z", [ ("moveTo", ((100.0, 100.0),)), ("lineTo", ((300.0, 100.0),)), ("lineTo", ((200.0, 300.0),)), ("lineTo", ((100.0, 100.0),)), ("closePath", ()), ] ), # absolute V command ( "M 100 100 V 300 L 200 300 z", [ ("moveTo", ((100.0, 100.0),)), ("lineTo", ((100.0, 300.0),)), ("lineTo", ((200.0, 300.0),)), ("lineTo", ((100.0, 100.0),)), ("closePath", ()), ] ), # relative v command ( "M 100 100 v 200 L 200 300 z", [ ("moveTo", ((100.0, 100.0),)), ("lineTo", ((100.0, 300.0),)), ("lineTo", ((200.0, 300.0),)), ("lineTo", ((100.0, 100.0),)), ("closePath", ()), ] ), ] ) def test_parse_path(pathdef, expected): pen = RecordingPen() parse_path(pathdef, pen) assert pen.value == expected @pytest.mark.parametrize( "pathdef1, pathdef2", [ # don't need spaces between numbers and commands ( "M 100 100 L 200 200", "M100 100L200 200", ), # repeated implicit command ( "M 100 200 L 200 100 L -100 -200", "M 100 200 L 200 100 -100 -200" ), # don't need spaces before a minus-sign ( "M100,200c10-5,20-10,30-20", "M 100 200 c 10 -5 20 -10 30 -20" ), # closed paths have an implicit lineTo if they don't # end on the same point as the initial moveTo ( "M 100 100 L 300 100 L 200 300 z", "M 100 100 L 300 100 L 200 300 L 100 100 z" ) ] ) def test_equivalent_paths(pathdef1, pathdef2): pen1 = RecordingPen() parse_path(pathdef1, pen1) pen2 = RecordingPen() parse_path(pathdef2, pen2) assert pen1.value == pen2.value def test_exponents(): # It can be e or E, the plus is optional, and a minimum of +/-3.4e38 must be supported. pen = RecordingPen() parse_path("M-3.4e38 3.4E+38L-3.4E-38,3.4e-38", pen) expected = [ ("moveTo", ((-3.4e+38, 3.4e+38),)), ("lineTo", ((-3.4e-38, 3.4e-38),)), ("endPath", ()), ] assert pen.value == expected pen = RecordingPen() parse_path("M-3e38 3E+38L-3E-38,3e-38", pen) expected = [ ("moveTo", ((-3e+38, 3e+38),)), ("lineTo", ((-3e-38, 3e-38),)), ("endPath", ()), ] assert pen.value == expected def test_invalid_implicit_command(): with pytest.raises(ValueError) as exc_info: parse_path("M 100 100 L 200 200 Z 100 200", RecordingPen()) assert exc_info.match("Unallowed implicit command") def test_arc_to_cubic_bezier(): pen = RecordingPen() parse_path("M300,200 h-150 a150,150 0 1,0 150,-150 z", pen) expected = [ ('moveTo', ((300.0, 200.0),)), ('lineTo', ((150.0, 200.0),)), ( 'curveTo', ( (150.0, 282.842), (217.157, 350.0), (300.0, 350.0) ) ), ( 'curveTo', ( (382.842, 350.0), (450.0, 282.842), (450.0, 200.0) ) ), ( 'curveTo', ( (450.0, 117.157), (382.842, 50.0), (300.0, 50.0) ) ), ('lineTo', ((300.0, 200.0),)), ('closePath', ()) ] result = list(pen.value) assert len(result) == len(expected) for (cmd1, points1), (cmd2, points2) in zip(result, expected): assert cmd1 == cmd2 assert len(points1) == len(points2) for pt1, pt2 in zip(points1, points2): assert pt1 == pytest.approx(pt2, rel=1e-5) class ArcRecordingPen(RecordingPen): def arcTo(self, rx, ry, rotation, arc_large, arc_sweep, end_point): self.value.append( ("arcTo", (rx, ry, rotation, arc_large, arc_sweep, end_point)) ) def test_arc_pen_with_arcTo(): pen = ArcRecordingPen() parse_path("M300,200 h-150 a150,150 0 1,0 150,-150 z", pen) expected = [ ('moveTo', ((300.0, 200.0),)), ('lineTo', ((150.0, 200.0),)), ('arcTo', (150.0, 150.0, 0.0, True, False, (300.0, 50.0))), ('lineTo', ((300.0, 200.0),)), ('closePath', ()) ] assert pen.value == expected @pytest.mark.parametrize( "path, expected", [ ( "M1-2A3-4-1.0 01.5.7", [ ("moveTo", ((1.0, -2.0),)), ("arcTo", (3.0, 4.0, -1.0, False, True, (0.5, 0.7))), ("endPath", ()), ], ), ( "M21.58 7.19a2.51 2.51 0 10-1.77-1.77", [ ("moveTo", ((21.58, 7.19),)), ("arcTo", (2.51, 2.51, 0.0, True, False, (19.81, 5.42))), ("endPath", ()), ], ), ( "M22 12a25.87 25.87 0 00-.42-4.81", [ ("moveTo", ((22.0, 12.0),)), ("arcTo", (25.87, 25.87, 0.0, False, False, (21.58, 7.19))), ("endPath", ()), ], ), ( "M0,0 A1.2 1.2 0 012 15.8", [ ("moveTo", ((0.0, 0.0),)), ("arcTo", (1.2, 1.2, 0.0, False, True, (2.0, 15.8))), ("endPath", ()), ], ), ( "M12 7a5 5 0 105 5 5 5 0 00-5-5", [ ("moveTo", ((12.0, 7.0),)), ("arcTo", (5.0, 5.0, 0.0, True, False, (17.0, 12.0))), ("arcTo", (5.0, 5.0, 0.0, False, False, (12.0, 7.0))), ("endPath", ()), ], ) ], ) def test_arc_flags_without_spaces(path, expected): pen = ArcRecordingPen() parse_path(path, pen) assert pen.value == expected @pytest.mark.parametrize( "path", ["A", "A0,0,0,0,0,0", "A 0 0 0 0 0 0 0 0 0 0 0 0 0"] ) def test_invalid_arc_not_enough_args(path): pen = ArcRecordingPen() with pytest.raises(ValueError, match="Invalid arc command") as e: parse_path(path, pen) assert isinstance(e.value.__cause__, ValueError) assert "Not enough arguments" in str(e.value.__cause__) def test_invalid_arc_argument_value(): pen = ArcRecordingPen() with pytest.raises(ValueError, match="Invalid arc command") as e: parse_path("M0,0 A0,0,0,2,0,0,0", pen) cause = e.value.__cause__ assert isinstance(cause, ValueError) assert "Invalid argument for 'large-arc-flag' parameter: '2'" in str(cause) pen = ArcRecordingPen() with pytest.raises(ValueError, match="Invalid arc command") as e: parse_path("M0,0 A0,0,0,0,-2.0,0,0", pen) cause = e.value.__cause__ assert isinstance(cause, ValueError) assert "Invalid argument for 'sweep-flag' parameter: '-2.0'" in str(cause)