cartodb/perfect-scrollbar
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decrease mouse handlers count and every-time class checking during mousemove

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This commit is contained in:
Alexandr Subbotin 2014-10-22 15:40:12 +04:00 committed by Hyunje Alex Jun
parent 3821413589
commit 05b20f45ef
1 changed files with 32 additions and 36 deletions
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68
src/perfect-scrollbar.js
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@ -250,32 +250,30 @@
var currentLeft;
var currentPageX;
var inScrolling = false;
var mouseMoveHandler = function (e) {
updateScrollLeft(currentLeft, e.pageX - currentPageX);
updateGeometry();
e.stopPropagation();
e.preventDefault();
};
var mouseUpHandler = function (e) {
$scrollbarXRail.removeClass('in-scrolling');
$(ownerDocument).unbind(eventClass('mousemove'), mouseMoveHandler);
};
$scrollbarX.bind(eventClass('mousedown'), function (e) {
currentPageX = e.pageX;
currentLeft = $scrollbarX.position().left;
$scrollbarXRail.addClass('in-scrolling');
inScrolling = true;
$(ownerDocument).bind(eventClass('mousemove'), mouseMoveHandler);
$(ownerDocument).one(eventClass('mouseup'), mouseUpHandler);
e.stopPropagation();
e.preventDefault();
});
$(ownerDocument).bind(eventClass('mousemove'), function (e) {
if (inScrolling) {
updateScrollLeft(currentLeft, e.pageX - currentPageX);
updateGeometry();
e.stopPropagation();
e.preventDefault();
}
});
$(ownerDocument).bind(eventClass('mouseup'), function (e) {
if (inScrolling) {
inScrolling = false;
$scrollbarXRail.removeClass('in-scrolling');
}
});
currentLeft =
currentPageX = null;
}
@ -284,32 +282,30 @@
var currentTop;
var currentPageY;
var inScrolling = false;
var mouseMoveHandler = function (e) {
updateScrollTop(currentTop, e.pageY - currentPageY);
updateGeometry();
e.stopPropagation();
e.preventDefault();
};
var mouseUpHandler = function (e) {
$scrollbarYRail.removeClass('in-scrolling');
$(ownerDocument).unbind(eventClass('mousemove'), mouseMoveHandler);
};
$scrollbarY.bind(eventClass('mousedown'), function (e) {
currentPageY = e.pageY;
currentTop = $scrollbarY.position().top;
inScrolling = true;
$scrollbarYRail.addClass('in-scrolling');
$(ownerDocument).bind(eventClass('mousemove'), mouseMoveHandler);
$(ownerDocument).one(eventClass('mouseup'), mouseUpHandler);
e.stopPropagation();
e.preventDefault();
});
$(ownerDocument).bind(eventClass('mousemove'), function (e) {
if (inScrolling) {
updateScrollTop(currentTop, e.pageY - currentPageY);
updateGeometry();
e.stopPropagation();
e.preventDefault();
}
});
$(ownerDocument).bind(eventClass('mouseup'), function (e) {
if (inScrolling) {
inScrolling = false;
$scrollbarYRail.removeClass('in-scrolling');
}
});
currentTop =
currentPageY = null;
}