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docs: improve readability for people with poorer eyesight

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My eyesight is not in good shape, which means that I have difficulty
reading the online Linux documentation.  Specifically, body text is
oddly small compared to list items and the contrast of various text
elements is too low for me to be able to see easily.

Therefore, alter the HTML theme overrides to make the text larger and
increase the contrast for better visibility, and trust the typeface
choices of the reader's browser.

For the PDF output, increase the text size, use a sans-serif typeface
for sans-serif text, and use a serif typeface for "roman" serif text.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Darrick J. Wong 2018-10-04 18:06:03 -07:00 committed by Jonathan Corbet
parent 31527da5d6
commit 44ba0bb4f2
2 changed files with 41 additions and 3 deletions
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6
Documentation/conf.py
View File

@ -259,7 +259,7 @@ latex_elements = {
'papersize': 'a4paper',
# The font size ('10pt', '11pt' or '12pt').
'pointsize': '8pt',
'pointsize': '11pt',
# Latex figure (float) alignment
#'figure_align': 'htbp',
@ -272,8 +272,8 @@ latex_elements = {
'preamble': '''
% Use some font with UTF-8 support with XeLaTeX
\\usepackage{fontspec}
\\setsansfont{DejaVu Serif}
\\setromanfont{DejaVu Sans}
\\setsansfont{DejaVu Sans}
\\setromanfont{DejaVu Serif}
\\setmonofont{DejaVu Sans Mono}
'''

38
Documentation/sphinx-static/theme_overrides.css
View File

@ -4,6 +4,44 @@
*
*/
/* Improve contrast and increase size for easier reading. */
body {
font-family: serif;
color: black;
font-size: 100%;
}
h1, h2, .rst-content .toctree-wrapper p.caption, h3, h4, h5, h6, legend {
font-family: sans-serif;
}
.wy-menu-vertical li.current a {
color: #505050;
}
.wy-menu-vertical li.on a, .wy-menu-vertical li.current > a {
color: #303030;
}
div[class^="highlight"] pre {
font-family: monospace;
color: black;
font-size: 100%;
}
.wy-menu-vertical {
font-family: sans-serif;
}
.c {
font-style: normal;
}
p {
font-size: 100%;
}
/* Interim: Code-blocks with line nos - lines and line numbers don't line up.
* see: https://github.com/rtfd/sphinx_rtd_theme/issues/419
*/