On Aug 7, 11:44 pm, Boris Zbarsky <[EMAIL PROTECTED]> wrote: > rama wrote: > > Visibility details can be obtained from dom tree. Selenium provides > > methods to say whether the element is visible or > > invisible(display:none). > > So is that your definition of "invisible"? Note that there are multiple > possible definitions, and which one you care about matters in terms of > how much work needs to be done to compute it. >
I am sorry for the confusion. > > The pages take considerable time > > to load on the browser. Hence I wanted to disable layout. In other > > words I wanted a browser which does everything except for rendering on > > screen. > > Those two statements contradict each other. Layout involves computing > where things should be painted. "Rendering on the screen" usually means > painting a precomputed geometry, though a lot of people lump layout > under rendering.... > > So which exact part of the pipeline from "bytes on the HTTP server" to > "lit-up pixels on screen" are you trying to bypass, and what > functionality do you need to keep working? Note that if you're going to > be doing anything that simulates users clicking on the web page, you > must have complete geometry information computed and must have full > z-ordering information as well. > > If you need all that, then all you can skip is the part of the pipeline > from having a display list built to having lit-up pixels on the screen. > That's not going to get you much time savings, most likely, but you > might be able to do it by hacking the part of PaintFrame() that actually > traverses the built-up display list. > > -Boris I will need to simulate user clicks. I was under the assumption that layout and rendering are not required for doing clicks in webpages. Also regarding time savings, httpunit which is a headless browser is quite fast and it supports clicking actions on html elements. AFAIK http unit does not do both layouting and rendering. I will also try to do hacking of paintframe() and see if it gives significant performance gain. Please correct me if I am wrong _______________________________________________ dev-tech-layout mailing list [email protected] https://lists.mozilla.org/listinfo/dev-tech-layout
