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take care for excessive scroll speeds in safari 5.0

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This commit is contained in:
Fabian Jakobs 2011-08-15 11:46:24 +02:00
commit ca4f8fb9b0
1 changed files with 15 additions and 3 deletions
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18
ace/lib/event.js
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@ -168,14 +168,26 @@ else {
}
exports.addMouseWheelListener = function(el, callback) {
var max = 0;
var listener = function(e) {
if (e.wheelDelta !== undefined) {
// some versions of Safari (e.g. 5.0.5) report insanely high
// scroll values. These browsers require a higher factor
if (e.wheelDeltaY > max)
max = e.wheelDeltaY
if (max > 1000)
factor = 400;
else
factor = 8;
if (e.wheelDeltaX !== undefined) {
e.wheelX = -e.wheelDeltaX / 8;
e.wheelY = -e.wheelDeltaY / 8;
e.wheelX = -e.wheelDeltaX / factor;
e.wheelY = -e.wheelDeltaY / factor;
} else {
e.wheelX = 0;
e.wheelY = -e.wheelDelta / 8;
e.wheelY = -e.wheelDelta / factor;
}
}
else {