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ldm0
53d16780d5
Route CDP Page.printToPDF and CLI PDF dumps through an owned snapshot PDF backend with embedded subset fonts and logical text cluster mappings. Preserve print layout isolation, page selection, and bounded local raster fallbacks. Pin Krilla to upstream Git and share its font parsing dependencies with the existing rendering stack where version constraints allow. Add PDF extraction, pagination, graphics, and print lifecycle regressions, fixed font fixtures, and reader and CDP smoke checks. Refs #279.
74 lines
3.3 KiB
Python
74 lines
3.3 KiB
Python
# /// script
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# requires-python = ">=3.11"
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# dependencies = ["fonttools==4.59.0"]
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# ///
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"""Derive an original variable/ligature PDF fixture from Moli's generated Ahem font."""
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import copy
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from pathlib import Path
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from fontTools.feaLib.builder import addOpenTypeFeaturesFromString
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from fontTools.colorLib.builder import buildCOLR, buildCPAL
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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.ttLib.tables._f_v_a_r import Axis
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from fontTools.ttLib.tables.TupleVariation import TupleVariation
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root = Path(__file__).resolve().parents[1]
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font = TTFont(root / "moli-layout/tests/fixtures/moli-ahem.ttf", recalcTimestamp=False)
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# Distinct glyphs exercise multi-character ToUnicode mappings without relying
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# on installed fonts or copying third-party typeface data.
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for name, width in [("fi", 1200), ("ffi", 1800)]:
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glyph = copy.deepcopy(font["glyf"]["uni0066"])
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glyph.coordinates = type(glyph.coordinates)((int(x * width / 600), y) for x, y in glyph.coordinates)
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font["glyf"][name] = glyph
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font["hmtx"].metrics[name] = (width, 0)
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added = ["fi", "ffi"]
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for codepoint in [0x301, 0x5D0, 0x5D1, 0x5D2, 0x2605]:
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name = f"uni{codepoint:04X}"
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font["glyf"][name] = copy.deepcopy(font["glyf"]["uni0066"])
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font["hmtx"].metrics[name] = (600, 0)
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added.append(name)
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for table in font["cmap"].tables:
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if table.isUnicode():
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table.cmap[codepoint] = name
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pen = TTGlyphPen(None)
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pen.moveTo((0, 900))
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pen.lineTo((200, 1100))
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pen.lineTo((300, 1100))
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pen.lineTo((100, 900))
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pen.closePath()
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font["glyf"]["uni0301"] = pen.glyph()
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font["hmtx"].metrics["uni0301"] = (0, 0)
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font.setGlyphOrder(list(dict.fromkeys(font.getGlyphOrder() + added)))
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addOpenTypeFeaturesFromString(font, """
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feature liga { sub uni0066 uni0066 uni0069 by ffi; sub uni0066 uni0069 by fi; } liga;
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markClass uni0301 <anchor 100 900> @TOP;
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feature mark { pos base uni0061 <anchor 300 800> mark @TOP; } mark;
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""")
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font["COLR"] = buildCOLR({"uni2605": [("uni0066", 0), ("uni0301", 1)]}, glyphMap=font.getReverseGlyphMap())
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font["CPAL"] = buildCPAL([[(1.0, 0.2, 0.0, 1.0), (0.0, 0.3, 1.0, 1.0)]])
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font["fvar"] = newTable("fvar")
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axis = Axis()
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axis.axisTag, axis.minValue, axis.defaultValue, axis.maxValue = "wght", 400, 400, 900
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axis.flags, axis.axisNameID = 0, font["name"].addName("Weight")
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font["fvar"].axes = [axis]
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font["fvar"].instances = []
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font["avar"] = newTable("avar")
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font["avar"].segments = {"wght": {-1.0: -1.0, 0.0: 0.0, 0.5: 0.75, 1.0: 1.0}}
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font["gvar"] = newTable("gvar")
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font["gvar"].variations = {}
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for name in font.getGlyphOrder():
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glyph = font["glyf"][name]
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if glyph.numberOfContours > 0:
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# Widen the ink, but leave the advance unchanged. This distinguishes
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# correct font instancing from simply stretching positioned text.
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deltas = [(150 if x > 0 else 0, 0) for x, _ in glyph.coordinates]
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font["gvar"].variations[name] = [TupleVariation({"wght": (0.0, 1.0, 1.0)}, deltas + [(0, 0)] * 4)]
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else:
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font["gvar"].variations[name] = []
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for record in list(font["name"].names):
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value = {1: "Moli PDF Test", 4: "Moli PDF Test", 6: "MoliPDFTest"}.get(record.nameID)
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if value is not None:
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font["name"].setName(value, record.nameID, record.platformID, record.platEncID, record.langID)
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font.save(root / "moli-paint/tests/fixtures/moli-pdf.ttf")
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