Scrollbars are going to be changing substantially in the next couple of weeks.
Right now several ports have their own versions of PlatformScrollbar that all clone the same logic (with the only difference between the classes being metrics and rendering). The current plan for refactoring is to eliminate PlatformScrollbar and make Scrollbar into a class that handles scrolling using a non-native cross-platform implementation. The Scrollbar class will be talking to a new ScrollbarTheme interface that will be platform-specific. ScrollbarTheme will be responsible for rendering scrollbars (and providing metrics for scrollbars). If any ports have special needs for this Scrollbar class (or for ScrollbarTheme), send me email or respond in this thread. I know that both WebKit on OS X and Google Chrome have need of tickmarks support on scrollbars, so this will ultimately need to be built into the rendering model. Classes that still require truly native scrollbars can subclass Scrollbar (with the only cost being a handful of wasted member variables in Scrollbar), although we would strongly encourage ports not to use native scrollbars. We will even be abandoning the native PlatformScrollbar implementation on the Mac. The new cross-platform Scrollbar class is going to support styling via CSS (initially for overflow sections only). If your port doesn't use this class, then you won't get the upcoming CSS styling support. dave ([EMAIL PROTECTED]) _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
