- From: Masayuki Nakano <masayuki@d-toybox.com>
- Date: Sun, 18 Mar 2012 10:57:04 +0900
- To: "www-dom@w3.org" <www-dom@w3.org>
I'm now implementing D3E WheelEvent on Gecko. https://bugzilla.mozilla.org/show_bug.cgi?id=719320 I realized that Gecko's javascript always use double for non-integer Number. Therefore, if I defined deltaX, deltaY and deltaZ as float, that could have caused error at copying float to double. E.g., following function returns false when I defined them as float. function () { var event = new WheelEvent("wheel", { deltaX: 1.0 }); return (event.deltaX == 1.0); } because the deltaX becomes 1.000000xxxxxxxxx (x means random number) by the error. I think that Gecko should define them as double for avoiding this bad behavior. Olli agreed with this idea at comment 6 in the bug. However, this can make incompatibility with other browsers because this really depends on the JS implementation. I don't know whether I should suggest to change the definition from float to double or not. Some implementation might have same problem if the definition is changed so... -- Masayuki Nakano <masayuki@d-toybox.com> Manager, Internationalization, Mozilla Japan.
Received on Sunday, 18 March 2012 01:57:29 UTC