cartodb4/perfect-scrollbar
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Add click handlers on scrollbar rails to scroll to the position.

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This commit is contained in:
Hyunje Alex Jun 2013-09-30 23:32:15 +09:00
parent 51db8add43
commit 43c7b22678
1 changed files with 43 additions and 0 deletions
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43
src/perfect-scrollbar.js
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@ -371,6 +371,48 @@
});
};
var bindRailClickHandler = function () {
var stopPropagation = function (e) { e.stopPropagation(); };
$scrollbarY.bind('click.perfect-scrollbar', stopPropagation);
$scrollbarYRail.bind('click.perfect-scrollbar', function (e) {
var halfOfScrollbarLength = parseInt(scrollbarYHeight / 2, 10),
positionTop = e.pageY - $scrollbarYRail.offset().top - halfOfScrollbarLength,
maxPositionTop = containerHeight - scrollbarYHeight,
positionRatio = positionTop / maxPositionTop;
if (positionRatio < 0) {
positionRatio = 0;
} else if (positionRatio > 1) {
positionRatio = 1;
}
$this.scrollTop((contentHeight - containerHeight) * positionRatio);
// update bar position
updateBarSizeAndPosition();
});
$scrollbarX.bind('click.perfect-scrollbar', stopPropagation);
$scrollbarXRail.bind('click.perfect-scrollbar', function (e) {
var halfOfScrollbarLength = parseInt(scrollbarXWidth / 2, 10),
positionLeft = e.pageX - $scrollbarXRail.offset().left - halfOfScrollbarLength,
maxPositionLeft = containerWidth - scrollbarXWidth,
positionRatio = positionLeft / maxPositionLeft;
if (positionRatio < 0) {
positionRatio = 0;
} else if (positionRatio > 1) {
positionRatio = 1;
}
$this.scrollLeft((contentWidth - containerWidth) * positionRatio);
// update bar position
updateBarSizeAndPosition();
});
};
// bind mobile touch handler
var bindMobileTouchHandler = function () {
var applyTouchMove = function (differenceX, differenceY) {
@ -528,6 +570,7 @@
updateBarSizeAndPosition();
bindMouseScrollXHandler();
bindMouseScrollYHandler();
bindRailClickHandler();
if (supportsTouch) {
bindMobileTouchHandler();
}