- From: Pierre-Anthony Lemieux via GitHub <sysbot+gh@w3.org>
- Date: Thu, 26 Jan 2017 17:39:42 +0000
- To: public-tt@w3.org
palemieux has just created a new issue for https://github.com/w3c/ttml2: == http://www.w3.org/ns/ttml/profile/imsc1/extension/#linePadding is not supported == To the extent that IMSC2 is intended to be subset of TTML2, TTML2 needs to support `http://www.w3.org/ns/ttml/profile/imsc1/extension/#linePadding`. While TTML2 adds support for padding on `span`, it is not equivalent to `#linePadding`. Specifically, `#linePadding` requires that the background of the first/last character of each line be extended, regardless of whether the line was wrapped explicitly using `br`. In contrast, `padding`, in the CSS/XSL sense, adds padding to the edges of the `span` regardless of whether the edge is actually on the start or end of a line. This means that additional gaps and color mismatch will be introduced if nested spans are used, even if `box-decoration-break: clone` is used. See examples at https://codepen.io/palemieux/pen/vyzbqW. Please view or discuss this issue at https://github.com/w3c/ttml2/issues/237 using your GitHub account
Received on Thursday, 26 January 2017 17:39:48 UTC