- From: Erik Arvidsson <erik@eae.net>
- Date: Tue, 21 Jun 2005 01:15:58 -0700
Dave, This sounds really sweet. How did you define the values for wheelDeltaX and wheelDeltaY? erik Dave Hyatt wrote: > Safari in the latest Tiger update supports WinIE's mouse wheel system. > We also have a wheelDeltaX and wheelDeltaY so that horizontal wheeling > can be supported. I had planned to propose this at some point but > hadn't gotten around to it yet. > > dave > > On Jun 20, 2005, at 3:01 PM, Erik Arvidsson wrote: > >> Chris Griego wrote: >> >>> Currently the only way to capture and use the mouse wheel on the web >>> is within the Macromedia Flash v7 plugin which added event handling >>> for the mouse wheel. >>> >> >> That's incorrect. Both IE (since 5.5?) and Mozilla supports this. >> Unfortunately they do it in different ways. >> >> IE: >> >> element.attachEvent("onmousewheel", function () { >> document.title = window.event.wheelDelta; >> }); >> >> Mozilla: >> >> element.addEventListener("DOMMouseScroll", function (e) { >> document.title = e.detail; >> }, true); >> >> The values here are bit different. >> >> In Mozilla, if you have set Mozilla to scroll a certain number of >> rows you get the number of steps here. If you have it set to scroll >> one page at a time you get large values and I'm not sure if these >> represents the number of rows in some way. >> >> In IE it returns multiples of 120 but I guess it really represent 3 >> rows * 40 twips/row and that changing this in some control panel >> applet or in the registry might give you other alternative results. >> >> The values in IE is negative when Mozilla is positive and the other >> way around. >> >> Here is a pretty simple way to unify these to some extent: >> >> function getWheelDelta(e) { >> if (window.event) { // IE >> return e.wheelDelta / 40; >> } else { >> // In case the user has "one screen at a time" we get a >> // very big value >> var v = e.detail || 0; >> if (v > 1000) { >> v = 3; >> } else if (v < -1000) { >> v = -3; >> } >> return - v; >> } >> } >> >> erik >> >
Received on Tuesday, 21 June 2005 01:15:58 UTC