Tests/svgLib/path/shapes_test.py

from __future__ import print_function, absolute_import, division

from fontTools.misc.py23 import *
from fontTools.svgLib.path import shapes
from fontTools.misc import etree
import pytest


@pytest.mark.parametrize(
    "svg_xml, expected_path, expected_transform",
    [
        # path: direct passthrough
        (
            "<path d='I love kittens'/>",
            "I love kittens",
            None
        ),
        # path no @d
        (
            "<path duck='Mallard'/>",
            None,
            None
        ),
        # line
        (
            '<line x1="10" x2="50" y1="110" y2="150"/>',
            'M10,110 L50,150',
            None
        ),
        # line, decimal positioning
        (
            '<line x1="10.0" x2="50.5" y1="110.2" y2="150.7"/>',
            'M10,110.2 L50.5,150.7',
            None
        ),
        # rect: minimal valid example
        (
            "<rect width='1' height='1'/>",
            "M0,0 H1 V1 H0 V0 z",
            None
        ),
        # rect: sharp corners
        (
            "<rect x='10' y='11' width='17' height='11'/>",
            "M10,11 H27 V22 H10 V11 z",
            None
        ),
        # rect: round corners
        (
            "<rect x='9' y='9' width='11' height='7' rx='2'/>",
            "M11,9 H18 A2,2 0 0 1 20,11 V14 A2,2 0 0 1 18,16 H11"
            " A2,2 0 0 1 9,14 V11 A2,2 0 0 1 11,9 z",
            None
        ),
        # rect: simple
        (
            "<rect x='11.5' y='16' width='11' height='2'/>",
            "M11.5,16 H22.5 V18 H11.5 V16 z",
            None
        ),
        # rect: the one above plus a rotation
        (
            "<rect x='11.5' y='16' transform='matrix(0.7071 -0.7071 0.7071 0.7071 -7.0416 16.9999)' width='11' height='2'/>",
            "M11.5,16 H22.5 V18 H11.5 V16 z",
            (0.7071, -0.7071, 0.7071, 0.7071, -7.0416, 16.9999)
        ),
        # polygon
        (
            "<polygon points='30,10 50,30 10,30'/>",
            "M30,10 50,30 10,30 z",
            None
        ),
        # polyline
        (
            "<polyline points='30,10 50,30 10,30'/>",
            "M30,10 50,30 10,30",
            None
        ),
        # circle, minimal valid example
        (
            "<circle r='1'/>",
            "M-1,0 A1,1 0 1 1 1,0 A1,1 0 1 1 -1,0",
            None
        ),
        # circle
        (
            "<circle cx='600' cy='200' r='100'/>",
            "M500,200 A100,100 0 1 1 700,200 A100,100 0 1 1 500,200",
            None
        ),
        # circle, decimal positioning
        (
            "<circle cx='12' cy='6.5' r='1.5'></circle>",
            "M10.5,6.5 A1.5,1.5 0 1 1 13.5,6.5 A1.5,1.5 0 1 1 10.5,6.5",
            None
        ),
        # circle, with transform
        (
            '<circle transform="matrix(0.9871 -0.1602 0.1602 0.9871 -7.525 8.6516)" cx="49.9" cy="51" r="14.3"/>',
            'M35.6,51 A14.3,14.3 0 1 1 64.2,51 A14.3,14.3 0 1 1 35.6,51',
            (0.9871, -0.1602, 0.1602, 0.9871, -7.525, 8.6516)
        ),
        # ellipse
        (
            '<ellipse cx="100" cy="50" rx="100" ry="50"/>',
            'M0,50 A100,50 0 1 1 200,50 A100,50 0 1 1 0,50',
            None
        ),
        # ellipse, decimal positioning
        (
            '<ellipse cx="100.5" cy="50" rx="10" ry="50.5"/>',
            'M90.5,50 A10,50.5 0 1 1 110.5,50 A10,50.5 0 1 1 90.5,50',
            None
        ),
        # ellipse, with transform
        (
            '<ellipse transform="matrix(0.9557 -0.2945 0.2945 0.9557 -14.7694 20.1454)" cx="59.5" cy="59.1" rx="30.9" ry="11.9"/>',
            'M28.6,59.1 A30.9,11.9 0 1 1 90.4,59.1 A30.9,11.9 0 1 1 28.6,59.1',
            (0.9557, -0.2945, 0.2945, 0.9557, -14.7694, 20.1454)
        ),
    ]
)
def test_el_to_path(svg_xml, expected_path, expected_transform):
    pb = shapes.PathBuilder()
    pb.add_path_from_element(etree.fromstring(svg_xml))
    if expected_path:
        expected_paths = [expected_path]
        expected_transforms = [expected_transform]
    else:
        expected_paths = []
        expected_transforms = []
    assert pb.paths == expected_paths
    assert pb.transforms == expected_transforms