From: Eric J. <e-...@no...> - 2007-06-04 15:05:53
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> My beef with canvas-style immediate-mode (procedural) drawing APIs is > that while it's easy to draw things with them, it's harder to make those > things clickable. I guess you could make each feature its own DrawView, > which would make it easy to tell which feature was clicked on, but how > well would that scale? Or if you had one big DrawView, you could get > the mouse coordinates from the click event handler and do your own > hit-testing. But I'd rather not do hit-testing in javascript if it's > already been done in C++ for divs. > > Also, how is DrawView DHTML implemented for IE? I'm getting flash for > the DrawView intro. > > Again, though, I'm speaking mainly from ignorance here, from a cursory > skim of the API docs. I'd be interested in seeing a DHTML Laszlo app > with a few thousand on-screen interactive elements. Hi Mitch, I have definitely reached my limit in how much I know about Openlaszlo. I just wanted to clarify a couple of points about what was possible with it. I saw a demo and was impressed, I don't think it's as limiting as people were originally thinking. I have never used it or programmed with it. I think the performance also would be similar to a home spun DHTML app, because it generates DHTML. That being said, that's all I really know and I think you have a much better handle of your needs in terms of scalability and the appropriateness of using software such as Openlaszlo for a genome browser. Just thought it was worth a gander. I think things on this list look really great and I am looking forward to the new genome browser. Eric > Mitch > > |