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allow options to disable features that may conflict with other plugins #41

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allow options to disable features that may conflict with other plugins #41

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45 changes: 30 additions & 15 deletions jquery.rwdImageMaps.js
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Expand Up @@ -9,8 +9,20 @@
* Licensed under the MIT license
*/
;(function($) {
$.fn.rwdImageMaps = function() {
var $img = this;
$.fn.rwdImageMaps = function(options) {
var $img = this,
defaults = {
// use img[width], img[height] attributes to set values?
useImgDimensionAttrs: true,
// bind and trigger the main method (rwdImageMap) to window.resize?
// allows for using this plugin in custom resize methods without
// continuously triggering the window.resize method
triggerOnResize: true
},
attrW = 'width',
attrH = 'height';

options = $.extend(true, defaults, options);

var rwdImageMap = function() {
$img.each(function() {
Expand All @@ -22,10 +34,8 @@

// Since WebKit doesn't know the height until after the image has loaded, perform everything in an onload copy
$('<img />').load(function() {
var attrW = 'width',
attrH = 'height',
w = $that.attr(attrW),
h = $that.attr(attrH);
var w = options.useImgDimensionAttrs ? $that.attr(attrW) : null,
h = options.useImgDimensionAttrs ? $that.attr(attrH) : null;

if (!w || !h) {
var temp = new Image();
Expand All @@ -48,19 +58,24 @@

var coords = $this.data(c).split(','),
coordsPercent = new Array(coords.length);

for (var i = 0; i < coordsPercent.length; ++i) {
if (i % 2 === 0)
coordsPercent[i] = parseInt(((coords[i]/w)*100)*wPercent);
else
coordsPercent[i] = parseInt(((coords[i]/h)*100)*hPercent);
}
$this.attr(c, coordsPercent.toString());

for (var i = 0; i < coordsPercent.length; ++i) {
if (i % 2 === 0) {
coordsPercent[i] = parseInt(((coords[i]/w)*100)*wPercent);
} else {
coordsPercent[i] = parseInt(((coords[i]/h)*100)*hPercent);
}
}
$this.attr(c, coordsPercent.toString());
});
}).attr('src', $that.attr('src'));
});
};
$(window).resize(rwdImageMap).trigger('resize');
if (options.triggerOnResize) {
$(window).resize(rwdImageMap).trigger('resize');
} else {
rwdImageMap();
}

return this;
};
Expand Down