Set a run's foreground color to a specific RGB hex value.
| Library | Pass | Fail | Pending |
|---|---|---|---|
python-docx | 0 | 0 | 10 |
docxjs | 10 | 0 | 0 |
color (10 values): red, green, blue, yellow, magenta, cyan, black, white, orange, purplescripts/gen_font_color.py — runs with --arg_template --color-rgb {color.rgb} --text "{color.text}" --out fixtures/docx/font-color--{color.id}.docx
#!/usr/bin/env python3
"""Generate a ``fixtures/docx/font-color*.docx`` fixture.
Supports two modes:
- **Literal (legacy):** no arguments — writes
``fixtures/docx/font-color.docx`` with the hard-coded "Red text" +
``#FF0000`` shape. Retained so the pre-parameterised manifest form
still works for anyone who pins this file directly.
- **Parameterised:** called with ``--color-rgb <RRGGBB> --text
<text> --out <path>``. Writes the fixture to the given path with
the specified colour and text. The ``features/docx/font-color.json``
manifest's ``generator.arg_template`` field drives these args at
expansion time.
"""
from __future__ import annotations
import argparse
from pathlib import Path
from docx import Document
from docx.shared import RGBColor
_REPO_ROOT = Path(__file__).resolve().parent.parent
def _hex_to_rgb(hex_value: str) -> RGBColor:
if len(hex_value) != 6:
raise ValueError(f"Expected 6-digit hex RRGGBB, got {hex_value!r}")
r = int(hex_value[0:2], 16)
g = int(hex_value[2:4], 16)
b = int(hex_value[4:6], 16)
return RGBColor(r, g, b)
def _write(text: str, color_rgb: str, out: Path) -> None:
doc = Document()
paragraph = doc.add_paragraph()
run = paragraph.add_run(text)
run.font.color.rgb = _hex_to_rgb(color_rgb)
out.parent.mkdir(parents=True, exist_ok=True)
doc.save(out, reproducible=True)
def main() -> int:
parser = argparse.ArgumentParser()
parser.add_argument("--color-rgb", default="FF0000", help="6-digit uppercase hex")
parser.add_argument("--text", default="Red text")
parser.add_argument(
"--out",
default=str(_REPO_ROOT / "fixtures" / "docx" / "font-color.docx"),
)
args = parser.parse_args()
out_path = Path(args.out)
if not out_path.is_absolute():
out_path = _REPO_ROOT / out_path
_write(args.text, args.color_rgb, out_path)
print(out_path)
return 0
if __name__ == "__main__":
raise SystemExit(main())
{
"$schema": "../manifest.schema.json",
"id": "docx/font-color",
"kind": "parameterised",
"title": "Font color",
"format": "docx",
"category": "text-formatting",
"summary": "Set a run's foreground color to a specific RGB hex value.",
"spec": {
"source": "ecma-376-5-part-1",
"clause": "17.3.2.6",
"element": "w:color",
"rnc_reference": "spec/ecma-376-5/part-1/rnc/WordprocessingML.rnc",
"xsd_reference": "spec/ecma-376-5/part-1/xsd/wml.xsd",
"notes": "<w:color w:val=\"RRGGBB\"/> sets the foreground color. The value is 6 uppercase hex digits OR the literal 'auto'. This manifest is a parameterised family: one manifest file expands into ten concrete colour test cases (FF0000 through 7F00FF) at runtime. Each expanded case targets a distinct fixture `docx/font-color--<id>.docx` generated from the same gen_font_color.py script parameterised by CLI args."
},
"fixtures": {
"machine": "docx/font-color",
"office": "docx/font-color"
},
"generator": {
"python": "scripts/gen_font_color.py",
"arg_template": "--color-rgb {color.rgb} --text \"{color.text}\" --out fixtures/docx/font-color--{color.id}.docx"
},
"parameters": {
"color": [
{
"id": "red",
"text": "Red text",
"rgb": "FF0000",
"css": "rgb\\(255,\\s*0,\\s*0\\)|#ff0000|#FF0000|red"
},
{
"id": "green",
"text": "Green text",
"rgb": "00FF00",
"css": "rgb\\(0,\\s*255,\\s*0\\)|#00ff00|#00FF00|lime"
},
{
"id": "blue",
"text": "Blue text",
"rgb": "0000FF",
"css": "rgb\\(0,\\s*0,\\s*255\\)|#0000ff|#0000FF|blue"
},
{
"id": "yellow",
"text": "Yellow text",
"rgb": "FFFF00",
"css": "rgb\\(255,\\s*255,\\s*0\\)|#ffff00|#FFFF00|yellow"
},
{
"id": "magenta",
"text": "Magenta text",
"rgb": "FF00FF",
"css": "rgb\\(255,\\s*0,\\s*255\\)|#ff00ff|#FF00FF|magenta"
},
{
"id": "cyan",
"text": "Cyan text",
"rgb": "00FFFF",
"css": "rgb\\(0,\\s*255,\\s*255\\)|#00ffff|#00FFFF|cyan|aqua"
},
{
"id": "black",
"text": "Black text",
"rgb": "000000",
"css": "rgb\\(0,\\s*0,\\s*0\\)|#000000|black"
},
{
"id": "white",
"text": "White text",
"rgb": "FFFFFF",
"css": "rgb\\(255,\\s*255,\\s*255\\)|#ffffff|#FFFFFF|white"
},
{
"id": "orange",
"text": "Orange text",
"rgb": "FF7F00",
"css": "rgb\\(255,\\s*127,\\s*0\\)|#ff7f00|#FF7F00"
},
{
"id": "purple",
"text": "Purple text",
"rgb": "7F00FF",
"css": "rgb\\(127,\\s*0,\\s*255\\)|#7f00ff|#7F00FF"
}
]
},
"assertions_template": [
{
"id": "color-element-present-{color.id}",
"part": "word/document.xml",
"namespaces": {
"w": "http://schemas.openxmlformats.org/wordprocessingml/2006/main"
},
"xpath": "//w:r[w:t[normalize-space()='{color.text}']]/w:rPr/w:color",
"must": "exist",
"description": "The run must have a <w:color> child carrying the foreground color."
},
{
"id": "color-val-is-{color.id}",
"part": "word/document.xml",
"namespaces": {
"w": "http://schemas.openxmlformats.org/wordprocessingml/2006/main"
},
"xpath": "//w:r[w:t[normalize-space()='{color.text}']]/w:rPr/w:color/@w:val",
"must": "match",
"value": "^{color.rgb}$",
"description": "Foreground color must be RGB #{color.rgb} (6 uppercase hex digits)."
}
],
"render_assertions_template": [
{
"id": "font-color-{color.id}-text-present",
"kind": "css_selector",
"selector": ".docx-wrapper span, .docx-wrapper p",
"must": "match-text",
"value": "{color.text}",
"description": "The rendered DOM must contain the fixture text."
},
{
"id": "font-color-{color.id}-is-correct",
"kind": "computed_style",
"selector": ".docx-wrapper span:not(:has(*))",
"style_property": "color",
"value": "^({color.css})$",
"description": "The computed foreground color on the coloured run must resolve to the expected RGB."
}
]
}