Hi Fabian, maybe this can be interesting research and if I will have time for it I do it. Canvas based controls can be really fast compared to DOM based ones. There will be probably some limitations (for how to get text size, line wrapping, etc -- these automatic html features canvas hasn't) but virtual containers with onpaint() handlers can be interesting feature.
Cheers - Petr 2008/12/15 Fabian Jakobs <[email protected]>: > Petr Kobalíček schrieb: >> Hi Jean, >> >> I think that javascript is not the problem. Look at DOM generated by >> qooxdoo and you see DIVs in DIVs in DIVS, very, very much DIVS in DIVs >> :) >> >> We are just using DOM for what it is not created for. Also for example >> only intelligent container is table, because all others needs to >> generate very much dom objects to show. >> >> For example java applets or silverlight demos are very fast compared >> to qooxdoo, reason is the GUI framework and (native) GUI features thay >> can use (not creating DOM for every list item, tree item, column, etc, >> just write onpaint handler and go). >> >> For example try qooxdoo in Google Chrome, it has very fast javascript, >> but application is not faster compared to Firefox, because DOM >> manipulation and rendering is expensive. >> >> So, native client is interesting plugin (I tried it, I'm C++ developer >> and C++ is best language for me) but it makes applications totally >> unportable (source code and binary code too) and probably dangerous. >> >> Maybe we can use <canvas> in the future to write onpaint handlers for >> list items, it can be interesting to get something like this to work >> :) >> > If you don't care about IE you can do this today. You just have to sub > class the qx.ui.embec.Canvas widget we have in 0.8. > > Best Fabian > > -- > Fabian Jakobs > JavaScript Framework Developer > > 1&1 Internet AG > Brauerstraße 48 > 76135 Karlsruhe > > Amtsgericht Montabaur HRB 6484 > > Vorstand: Henning Ahlert, Ralph Dommermuth, Matthias Ehrlich, Thomas > Gottschlich, Matthias Greve, Robert Hoffmann, Markus Huhn, Oliver Mauss, > Achim Weiss > Aufsichtsratsvorsitzender: Michael Scheeren > > > ------------------------------------------------------------------------------ > SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. > The future of the web can't happen without you. Join us at MIX09 to help > pave the way to the Next Web now. Learn more and register at > http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ > _______________________________________________ > qooxdoo-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel > ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ qooxdoo-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
