114 lines
3.7 KiB
Python
114 lines
3.7 KiB
Python
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from string import ascii_letters
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from fontTools.misc.testTools import getXML
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from fontTools import subset
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from fontTools.fontBuilder import FontBuilder
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from fontTools.pens.ttGlyphPen import TTGlyphPen
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from fontTools.ttLib import TTFont, newTable
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from fontTools.subset.svg import NAMESPACES
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import pytest
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etree = pytest.importorskip("lxml.etree")
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@pytest.fixture
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def empty_svg_font():
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glyph_order = [".notdef"] + list(ascii_letters)
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pen = TTGlyphPen(glyphSet=None)
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pen.moveTo((0, 0))
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pen.lineTo((0, 500))
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pen.lineTo((500, 500))
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pen.lineTo((500, 0))
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pen.closePath()
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glyph = pen.glyph()
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glyphs = {g: glyph for g in glyph_order}
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fb = FontBuilder(unitsPerEm=1024, isTTF=True)
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fb.setupGlyphOrder(glyph_order)
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fb.setupCharacterMap({ord(c): c for c in ascii_letters})
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fb.setupGlyf(glyphs)
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fb.setupHorizontalMetrics({g: (500, 0) for g in glyph_order})
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fb.setupHorizontalHeader()
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fb.setupOS2()
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fb.setupPost()
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fb.setupNameTable({"familyName": "TestSVG", "styleName": "Regular"})
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svg_table = newTable("SVG ")
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svg_table.docList = []
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fb.font["SVG "] = svg_table
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return fb.font
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def new_svg(**attrs):
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return etree.Element("svg", {"xmlns": NAMESPACES["svg"], **attrs})
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def test_subset_svg_simple(empty_svg_font, tmp_path):
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# 'simple' as in one glyph per svg doc
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font = empty_svg_font
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svg_docs = font["SVG "].docList
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for i in range(1, 11):
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svg = new_svg()
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etree.SubElement(svg, "path", {"id": f"glyph{i}", "d": f"M{i},{i}"})
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svg_docs.append((etree.tostring(svg).decode(), i, i))
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svg_font_path = tmp_path / "TestSVG.ttf"
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font.save(svg_font_path)
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subset_path = svg_font_path.with_suffix(".subset.ttf")
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# keep four glyphs in total, don't retain gids, which thus get remapped
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subset.main(
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[
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str(svg_font_path),
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f"--output-file={subset_path}",
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"--gids=2,4-6",
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]
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)
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subset_font = TTFont(subset_path)
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assert getXML(subset_font["SVG "].toXML, subset_font) == [
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'<svgDoc endGlyphID="1" startGlyphID="1">',
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' <![CDATA[<svg xmlns="http://www.w3.org/2000/svg"><path id="glyph1" d="M2,2"/></svg>]]>',
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"</svgDoc>",
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'<svgDoc endGlyphID="2" startGlyphID="2">',
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' <![CDATA[<svg xmlns="http://www.w3.org/2000/svg"><path id="glyph2" d="M4,4"/></svg>]]>',
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"</svgDoc>",
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'<svgDoc endGlyphID="3" startGlyphID="3">',
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' <![CDATA[<svg xmlns="http://www.w3.org/2000/svg"><path id="glyph3" d="M5,5"/></svg>]]>',
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"</svgDoc>",
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'<svgDoc endGlyphID="4" startGlyphID="4">',
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' <![CDATA[<svg xmlns="http://www.w3.org/2000/svg"><path id="glyph4" d="M6,6"/></svg>]]>',
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"</svgDoc>",
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]
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# same four glyphs, now retain gids
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subset.main(
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[
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str(svg_font_path),
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f"--output-file={subset_path}",
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"--gids=2,4-6",
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"--retain-gids",
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]
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)
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subset_font = TTFont(subset_path)
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assert getXML(subset_font["SVG "].toXML, subset_font) == [
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'<svgDoc endGlyphID="2" startGlyphID="2">',
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' <![CDATA[<svg xmlns="http://www.w3.org/2000/svg"><path id="glyph2" d="M2,2"/></svg>]]>',
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"</svgDoc>",
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'<svgDoc endGlyphID="4" startGlyphID="4">',
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' <![CDATA[<svg xmlns="http://www.w3.org/2000/svg"><path id="glyph4" d="M4,4"/></svg>]]>',
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"</svgDoc>",
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'<svgDoc endGlyphID="5" startGlyphID="5">',
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' <![CDATA[<svg xmlns="http://www.w3.org/2000/svg"><path id="glyph5" d="M5,5"/></svg>]]>',
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"</svgDoc>",
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'<svgDoc endGlyphID="6" startGlyphID="6">',
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' <![CDATA[<svg xmlns="http://www.w3.org/2000/svg"><path id="glyph6" d="M6,6"/></svg>]]>',
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"</svgDoc>",
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]
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