On Wednesday 08 February 2012 13:50:54 Milian Wolff wrote: > Hello! Ping? Could someone be so kind as to answer my questions below?
Thanks > I am interested in improving WebKits printing capabilities. Especially a way > to define headers and footers would be most welcome. The CSS3 Paged Media > module [1] should allow just that. > > I wonder, has anyone begun working on this? If not, I am willing to give it > a shot. I realize that this is a big task, and it will probably be hard for > a newcomer like me to do properly. Hence take this email also as a cry for > help. Any hints like what to tackle first, would be very welcome. > > Looking at the sources, my current understanding of what needs to be done is > the following: > > 1) implement CSSParser::createMarginAtRule > > this should probably return a CSSMaringAtRule which inherits CSSStyleRule. > Is there any documentation on what else to do? Which existing CSSRule > implementation could I use as a reference? > > 2) handle the MarginAtRules in layouting > > I bet that this will be the hard work ;-) Again, is there any documentation > I should read? Any hints? Are there maybe existing css rules that I can use > as a reference? > > I furthermore wonder whether this can be implemented without too heavy > changes. So far, the PrintContext is rather detached from the actual > layouting mechanism. Especially considering that CSS3 allows different page > sizes based on @page rules, I have a hard time of figuring out how this > could work with the existing API. I fear there are (big?) changes required > here. > > As such, any hints or guidance would be much appreciated. > > 3) unit testing > > I see that there are existing printing unit tests in LayoutTests/printing/ > and reckon that the above needs extensive testing and I'll try to get this > done as well. > > 4) Probably related to 1 & 2, I guess one must also improve support for > @page rules in general. > > Cheers, I appreciate your help. > > [1]: http://www.w3.org/TR/css3-page/ -- Milian Wolff | [email protected] | Software Engineer KDAB (Deutschland) GmbH&Co KG, a KDAB Group company Tel. Germany +49-30-521325470, Sweden (HQ) +46-563-540090 KDAB - Qt Experts - Platform-independent software solutions
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