Le 2015-01-11 10:26, Koji Ishii a écrit : > I'd like to propose to: Koji, Here's my opinion on your proposals. > 1. Defer 'sideways-left'[1] to Level 4, and I agree. Defer 'sideways-left'[1] to Level 4. > 2. Make 'sideways' as a value alias to 'sideways-right', not as a > switch between 'sideways-left' and 'sideways-right' by writing-mode. I disagree. 'sideways' should not be an alias to 'sideways-right'. Defer 'sideways' to Level 4 if necessary and if you think 'sideways' would be too much to ask/expect from rendering engine manufacturers in short period of time, just like Fantasai proposed. > Currently, WebKit and Blink does not implement this value, and do #2 > above. IE does not implement this property yet. I don't know the > status of Gecko, but I'd like to sort this out before implementations > pick different choices for the 'sideways' value. > > Currently the property is prefixed, so we could probably work out if > truly needed, but I hear no complaints with the current WebKit/Blink > implementations. > > One more thing to note on this value is that, a concern was raised > before that all other values of this property only change orientation > of characters, while this value changes the baseline as well. This > difference makes implementing this value more complex than others. Firefox 38.0a1 buildID=20150125230903 implements correctly central baseline-alignment when text-orientation is 'mixed' or 'upright' and implements correctly alphabetic baseline-alignment when text-orientation is 'sideways-right'. So, I am for maintaining this just as it is. Gérard > IIRC the discussion didn't last long, but I think it was not really > satisfactory for the proposer. > > Other 3 values (mixed, upright, and sideways-right) are important for > Chinese and Japanese vertical flow, while this value is for rarer use > cases in other scripts. I propose that this value can be discussed > further in Level 4, and I wish us not to introduce interoperability > issues nor slow this spec down because of this value. > > [1] > http://dev.w3.org/csswg/css-writing-modes-3/#valdef-text-orientation-sideways-left > > /kojiReceived on Wednesday, 28 January 2015 03:30:10 UTC
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