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LibWeb: Allow multiple text-decoration-lines

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The spec grammar for `text-decoration-line` is:

`none | [ underline || overline || line-through || blink ]`

Which means that it's either `none`, or any combination of the other
values. This patch makes that parse for `text-decoration-line` and
`text-decoration`, stores the results as a Vector, and adjusts
`paint_text_decoration()` to run as a loop over all the values that are
provided.

As noted, storing a Vector of values is a bit wasteful, as they could be
stored as flags in a single `u8`. But I was getting too confused trying
to do that in a nice way.
This commit is contained in:
Sam Atkins 2022-04-14 16:22:35 +01:00 • committed by Andreas Kling
parent 85da8cbb07
commit 7c91fda088
9 changed files with 142 additions and 66 deletions
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2
Base/res/html/misc/text-decoration.html
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@ -8,6 +8,7 @@
.strikethrough { text-decoration: line-through dotted green; }
.blink { text-decoration: blink; }
.current-color { color: #8B4513; text-decoration: underline; }
.overboard { text-decoration: double overline underline line-through magenta; }
</style>
</head>
<body>
@ -16,5 +17,6 @@
<p class="strikethrough">Wombling</p>
<p class="blink">FREE!</p>
<p class="current-color">This underline should match the text color</p>
<p class="overboard">This should have an underline, overline and line-through, all in glorious magenta.</p>
</body>
</html>