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@hayeah
Created May 4, 2012 09:08
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jquery ui patch to allow draggable element that is larger than container
drag: function(event, ui) {
var inst = $(this).data("draggable"), o = inst.options;
var d = o.snapTolerance;
var x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;
for (var i = inst.snapElements.length - 1; i >= 0; i--){
var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width,
t = inst.snapElements[i].top, b = t + inst.snapElements[i].height;
//Yes, I know, this is insane ;)
if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || // conditions that check if element is going to snap
(l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) ||
(l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) ||
(l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d) ||
// Howard Yeh: patch that adds snappable condition for when draggable is larger than snap element (for inner snap mode only)
(o.snapMode == "inner" && ((Math.abs(t-y1) <= d) ||
(Math.abs(b-y2) <= d) ||
(Math.abs(l-x1) <= d) ||
(Math.abs(r-x2) <= d)))
)) {
if(inst.snapElements[i].snapping) (inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
inst.snapElements[i].snapping = false;
continue;
}
if(o.snapMode != 'inner') {
var ts = Math.abs(t - y2) <= d;
var bs = Math.abs(b - y1) <= d;
var ls = Math.abs(l - x2) <= d;
var rs = Math.abs(r - x1) <= d;
if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top;
if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left;
if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left;
}
var first = (ts || bs || ls || rs);
if(o.snapMode != 'outer') {
var ts = Math.abs(t - y1) <= d;
var bs = Math.abs(b - y2) <= d;
var ls = Math.abs(l - x1) <= d;
var rs = Math.abs(r - x2) <= d;
if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top - inst.margins.top;
if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left;
if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.left;
}
if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first))
(inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
inst.snapElements[i].snapping = (ts || bs || ls || rs || first);
};
}
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