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texish 0.20.2 — Page-background colour and translucent colours

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@edadma edadma released this 18 Jul 17:46
v0.20.2
cc4a84b

A patch release: a page-background colour primitive and translucent colours throughout.

\pagecolor

\pagecolor[alpha]{colour} sets the colour painted across the whole page, under all content. With a translucent or transparent colour the page composites correctly when the output is used as an overlay — a video lower-third, for instance:

\pagecolor[0.6]{black}   % a 60%-opaque black band the video shows through
\pagecolor{transparent}  % clear page; only the drawn content is opaque

It applies to the document's pages, so give it in the preamble. All four backends now paint the page background consistently: the PDF backend, which previously left the page unpainted, now fills it like the image, SVG and Graphics2D backends already did (so a transparent PDF page is possible too).

Translucent colours

Any colour may now carry alpha, three interchangeable ways:

  • an optional [alpha] (0–1) on \color, \textcolor, \pagecolor and \colorbox — \color[0.5]{firebrick}
  • an eight-digit #RRGGBBAA code in any colour string, so it works everywhere a colour is taken, including \fill, \stroke and \fcolorbox — \colorbox{#00000066}{…}
  • the keyword transparent

The two forms are equivalent: \textcolor[0.5]{firebrick}{…} and \textcolor{#b2222280}{…} set the same half-opaque word.

Suites are green at JVM 1348 / JS 1223 / Native 1238.

Native CLI binaries for Linux (x86_64, arm64) and macOS (arm64) attach below; other platforms use the JVM build.

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