pptx/shape-line-width--hairline

Metadata

XPath assertions

Render assertions

No render assertions declared.

Generator source

scripts/gen_shape_line_width.py

#!/usr/bin/env python3
"""Generate a single ``fixtures/pptx/shape-line-width--<id>.pptx`` fixture.

Parameterised generator for the ``pptx/shape-line-width`` manifest
family. The conformance runner invokes this script once per case with
``--emu <WIDTH_EMU> --out <path>``.

Each invocation produces a single-slide presentation containing one
rectangle auto-shape whose outline width is set via ``shape.line.width
= Emu(width)``. The underlying XML is ``<p:sp>/<p:spPr>/<a:ln w="..."/>``;
the manifest asserts the ``@w`` attribute equals the axis ``val`` field.
"""

from __future__ import annotations

import argparse
import datetime as _dt
from pathlib import Path

from pptx import Presentation
from pptx.enum.shapes import MSO_SHAPE
from pptx.util import Emu, Inches

_REPO_ROOT = Path(__file__).resolve().parent.parent
_REPRODUCIBLE_DT = _dt.datetime(2000, 1, 1, 0, 0, 0)


def _write(width_emu: int, out: Path) -> None:
    prs = Presentation()
    # "Title Only" layout — an empty title placeholder plus our shape.
    slide = prs.slides.add_slide(prs.slide_layouts[5])
    shape = slide.shapes.add_shape(
        MSO_SHAPE.RECTANGLE, Inches(1), Inches(1), Inches(3), Inches(2)
    )
    shape.line.width = Emu(width_emu)
    out.parent.mkdir(parents=True, exist_ok=True)
    prs.save(out, zip_date_time=_REPRODUCIBLE_DT)


def main() -> int:
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "--emu",
        required=True,
        type=int,
        help="Line width in EMU (914400 EMU/inch, 12700 EMU/pt).",
    )
    parser.add_argument(
        "--out",
        required=True,
        help="Output fixture path (absolute or repo-relative).",
    )
    args = parser.parse_args()

    out_path = Path(args.out)
    if not out_path.is_absolute():
        out_path = _REPO_ROOT / out_path
    _write(args.emu, out_path)
    print(out_path)
    return 0


if __name__ == "__main__":
    raise SystemExit(main())

Manifest (expanded)

{
  "$schema": "../manifest.schema.json",
  "id": "pptx/shape-line-width--hairline",
  "kind": "literal",
  "title": "Shape outline line width",
  "format": "pptx",
  "category": "shapes",
  "summary": "An auto-shape's outline width, set via shape.line.width = Emu(value), emits <a:ln w=\"EMU\"/> inside the shape's <p:spPr>. This manifest is a parameterised family over 6 widths (hairline, thin, medium, thick, extrathick, heavy): one manifest file expands into 6 cases, each backed by a distinct fixture pptx/shape-line-width--<id>.pptx generated from the same gen_shape_line_width.py script parameterised by --emu.",
  "spec": {
    "source": "ecma-376-5-part-1",
    "clause": "20.1.8.60",
    "element": "a:ln",
    "rnc_reference": "spec/ecma-376-5/part-1/rnc/DrawingML.rnc",
    "xsd_reference": "spec/ecma-376-5/part-1/xsd/dml-lineProperties.xsd",
    "notes": "DrawingML <a:ln> declares line (outline) properties on a shape. Its @w attribute is a ST_LineWidth (ST_PositiveCoordinate32) value in EMU — 914400 EMU = 1 inch, 12700 EMU = 1 point. python-pptx's ``shape.line.width = Emu(v)`` writes the @w attribute directly. The assertion targets the <p:sp> whose <a:prstGeom prst=\"rect\"/> identifies it as the test rectangle, avoiding false matches against placeholder shapes."
  },
  "fixtures": {
    "machine": "pptx/shape-line-width--hairline"
  },
  "generator": {
    "python": "scripts/gen_shape_line_width.py",
    "arg_template": "--emu {width.val} --out fixtures/pptx/shape-line-width--{width.id}.pptx"
  },
  "_expansion": {
    "parent_id": "pptx/shape-line-width",
    "bindings": {
      "width": "hairline"
    }
  },
  "assertions": [
    {
      "id": "shape-line-width-hairline",
      "part": "ppt/slides/slide1.xml",
      "namespaces": {
        "p": "http://schemas.openxmlformats.org/presentationml/2006/main",
        "a": "http://schemas.openxmlformats.org/drawingml/2006/main"
      },
      "xpath": "//p:sp[p:spPr/a:prstGeom[@prst='rect']]/p:spPr/a:ln/@w",
      "must": "equal",
      "value": "3175",
      "description": "The rectangle shape's <p:spPr> must declare <a:ln w=\"3175\"/>."
    }
  ]
}