[Bug 23404] New: Redesign line position settings

https://www.w3.org/Bugs/Public/show_bug.cgi?id=23404

            Bug ID: 23404
           Summary: Redesign line position settings
           Product: TextTracks CG
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: WebVTT
          Assignee: silviapfeiffer1@gmail.com
          Reporter: silviapfeiffer1@gmail.com
        QA Contact: dave.null@w3.org
                CC: mike@w3.org, public-texttracks@w3.org

In bug 20037 we've redesigned text position settings.

This bug is about the "line" cue setting.

"line" settings position lines of text off the top of the video. With
snap-to-lines set (i.e. non-percentage values) the video viewport is divided
into lines and the positioning is by line number.

With percentage, users expect 0% to refer to the top of the cue box, 50% refer
to the center of the cue box, and 100% refer to the bottom of the cue box.

Right now the rendering algorithm does so by positioning the x% point of the
cue box at x% of the video viewport's height (for horizontal cues; width for
vertical cues).

However, this leads to hard to authoring content, e.g. to position the top of a
cue box exactly 20% down the video viewport, an author needs to make
complicated calculations to determine the "line" value that position equates
to.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

Received on Tuesday, 1 October 2013 02:30:15 UTC