Thanks for a quick response Adam. Would you say that the Qt version is a better option?
Dmitry On Tue, Dec 15, 2009 at 9:01 AM, Adam Roben <[email protected]> wrote: > On Dec 15, 2009, at 11:52 AM, Dmitry M wrote: > >> Hello everyone, I've just started diving into webkit development, so >> please excuse the inevitable ignorance. >> >> My goal is to modify the scrolling behavior. Specifically, I want to >> force mouse wheel scrolling, to scroll one page -- instead of a >> certain increment. I've looked through the source code and attempted >> to trace execution with gdb, but I still can't find the appropriate >> place for modification. I can't understand how events are processed >> and dispatched right now. >> >> I've started at the top. Events seem to come into EventHandler.cpp >> (and on my Mac, EventHandlerMac.cpp) and then are passed on to >> WebCore::FrameView (which is in fact a WebCore::ScrollView). Then it >> looks like these messages are passed onto the individual widgets on >> the page. Backtrace in one of the function is EventHandler.cpp or >> ScrollView.cpp reveal that the originator of these messages is a >> native NSScrollView class. So, FrameView is way down below in the >> chain of events. Additionally, if I disable >> EventHandler::handleWheelEvent (by inserting a return statement at the >> top) the scrolling behavior still functions correctly. So the >> scrolling behavior is defined elsewhere, and I'm having a tough time >> pinpointing where that is. >> >> So: >> >> #1 If you've read this far, does my summary above look correct? >> #2 Does Safari bind to webkit in a different way than say a Qt >> browser? I'm running my session with WebKitTools/Scripts/debug-safari. >> #3 Where is the scrolling behavior controlled? > > Scrolling in the Mac port of WebKit is quite different from all the other > ports. Mac uses native widgets (i.e., NSScrollViews) to handle scrolling, as > you observed. Other ports handle this operation entirely within WebCore. You > may have an easier time debugging on a port other than the Mac port, if > that's an option. > > -Adam > > _______________________________________________ webkit-help mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-help
