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Add % support for top left and bg-position styles. #117

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Add % support for top left and bg-position styles. #117

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15 changes: 9 additions & 6 deletions src/jquery.stellar.js
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Original file line number Diff line number Diff line change
Expand Up @@ -279,7 +279,10 @@
parentOffsetLeft = 0,
parentOffsetTop = 0,
tempParentOffsetLeft = 0,
tempParentOffsetTop = 0;
tempParentOffsetTop = 0,
clonedThis = $this.clone();

clonedThis.hide();

// Ensure this element isn't already part of another scrolling element
if (!$this.data('stellar-elementIsActive')) {
Expand All @@ -292,8 +295,8 @@

// Save/restore the original top and left CSS values in case we refresh the particles or destroy the instance
if (!$this.data('stellar-startingLeft')) {
$this.data('stellar-startingLeft', $this.css('left'));
$this.data('stellar-startingTop', $this.css('top'));
$this.data('stellar-startingLeft', clonedThis.css('left'));
$this.data('stellar-startingTop', clonedThis.css('top'));
} else {
$this.css('left', $this.data('stellar-startingLeft'));
$this.css('top', $this.data('stellar-startingTop'));
Expand Down Expand Up @@ -432,8 +435,8 @@
verticalOffset: verticalOffset,
startingValueLeft: backgroundPosition[0],
startingValueTop: backgroundPosition[1],
startingBackgroundPositionLeft: (isNaN(parseInt(backgroundPosition[0], 10)) ? 0 : parseInt(backgroundPosition[0], 10)),
startingBackgroundPositionTop: (isNaN(parseInt(backgroundPosition[1], 10)) ? 0 : parseInt(backgroundPosition[1], 10)),
startingBackgroundPositionLeft: (isNaN(parseInt(backgroundPosition[0], 10)) ? 0 : (-1 !== backgroundPosition[0].indexOf('%') ? (isNaN(parseInt($this.css('width'), 10)) ? 0 : parseInt($this.css('width'), 10) * (parseInt(backgroundPosition[0], 10) / 100)) : parseInt(backgroundPosition[0], 10))),
startingBackgroundPositionTop: (isNaN(parseInt(backgroundPosition[1], 10)) ? 0 : (-1 !== backgroundPosition[1].indexOf('%') ? (isNaN(parseInt($this.css('height'), 10)) ? 0 : parseInt($this.css('height'), 10) * (parseInt(backgroundPosition[1], 10) / 100)) : parseInt(backgroundPosition[1], 10))),
startingPositionLeft: $this.position().left,
startingPositionTop: $this.position().top,
startingOffsetLeft: offsetLeft,
Expand Down Expand Up @@ -648,4 +651,4 @@

// Expose the plugin class so it can be modified
window.Stellar = Plugin;
}(jQuery, this, document));
}(jQuery, this, document));