147053 2015-07-17 14:56:40 -0700 Allow scroll customization 2017-11-03 10:07:05 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) All All NEW InRadar P2 Normal --- 1 mj webkit-unassigned cigitia simon.fraser webkit-bug-importer oldest_to_newest 1110228 0 mj 2015-07-17 14:56:40 -0700 Scroll events are currently dispatched asynchronously, which makes it impossible to create effects that are bound to the scroll position. For instance, a common effect used in mobile applications is a sticky image header that zooms in the scrollback extent. Another example is a top or bottom toolbar that tracks in and out with the current scroll position. There are many other subtle effects tied to scroll position that native apps employ, which are impossible to do well on the web today. Relevant work being discussed in Blink: https://docs.google.com/document/d/1VnvAqeWFG9JFZfgG5evBqrLGDZYRE5w6G5jEDORekPY/edit 1110264 1 webkit-bug-importer 2015-07-17 16:45:14 -0700 <rdar://problem/21883758>