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jquery.glow.js
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jquery.glow.js
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/*
Glow effect plugin for jQuery using CSS3 and filters
It uses filters to add glow effects on PNG images
Copyright (c) 1997-2012 Djenad Razic, Machinez Design
http://www.machinezdesign.com
Licensed under the MIT license:
http://www.opensource.org/licenses/mit-license.php
Project home:
https://github.com/MisterDr/JQuery-Glow
Usage:
Enable glow and set color and radius:
$("#testimg").glow({ radius: "20", color:"green"});
Disable glow:
$("#testimg").glow({ radius: "20", color:"green", disable:true });
or
$("#testimg").glow({ disable:true });
Version 1.0
Tested on:
IPad (IOS 6 required), Chrome 18.0, Firefox 16.0.1, IE 9 (Lower versions should work by Microsoft's browser specifications)
With jQuery 3.1.1
Version 1.1
Added blink feature to blink over one second.
Example:
$("#testimg").glow({ radius: "20", color:"green", disable:true, blink:true });
Version 1.2
Added configurable blink timegap feature
Example:
$("#testimg").glow({ radius: "20", color: "blue", disable: true, blink: true, timegap: 2000 });
Version 1.3
Added Edge and fixed older browser support
*/
(function ($) {
var moved = false;
var originalPos = null;
$.fn.glow = function (options) {
//Check if it is needed to remove effect
var disable = false;
var innerElement = null;
var detectBrowser = function() {
if (navigator.userAgent.search("MSIE") >= 0) {
return "msie";
}
else if (navigator.userAgent.search("Trident") >= 0) {
return "trident";
}
else if (navigator.userAgent.search("Chrome") >= 0 || navigator.userAgent.search("Opera") >= 0) {
return "blink";
}
else if (navigator.userAgent.search("Firefox") >= 0) {
return "gecko";
}
else if (navigator.userAgent.search("Safari") >= 0 && navigator.userAgent.search("Chrome") < 0) {
return "webkit";
}
else {
return "blink";
}
};
var glowEnabled = true;
var blinkInterval;
var IntervalGap = 1000;
//Check for initial vars and add default values
//Default color: Red
//Default size 2 pixels
if (typeof (options.radius) === "undefined") {
options = $.extend({
radius: "2px"
}, options);
}
if (typeof (options.originalPos) !== "undefined") {
originalPos = options.originalPos;
}
if (typeof (options.color) === "undefined") {
options = $.extend({
color: "red"
}, options);
}
if (typeof (options.disable) !== "undefined") {
disable = true;
glowEnabled = false;
}
if (typeof (options.timegap) === "undefined") {
options = $.extend({
timegap: "1000"
}, options);
}
if (typeof (options.timegap) !== "undefined") {
IntervalGap = options.timegap;
}
if (typeof (options.blink) !== "undefined") {
if (options.blink) {
originalPos = $(this).offset();
disable = true;
glowEnabled = false;
var curObject = this;
var curSettings = options;
blinkInterval = setInterval(function () {
var element = $(curObject).data('element');
if (glowEnabled) {
$(curObject).glow({ radius: curSettings.radius, color: curSettings.color, originalPos: originalPos, element: element });
glowEnabled = false;
} else {
$(curObject).glow({ radius: curSettings.radius, color: curSettings.color, disable: true, originalPos: originalPos, element: element });
glowEnabled = true;
}
}, IntervalGap);
} else {
clearInterval(blinkInterval);
}
}
$(this).each(function (index) {
var browser = detectBrowser();
var oId = $(this).attr("id");
if (browser == "msie") {
if (!disable) {
$(this).offset({
left: $(this).offset().left - parseInt(options.radius),
top: $(this).offset().top - parseInt(options.radius)
});
$(this).css("filter", "progid:DXImageTransform.Microsoft.Glow(color='" + options.color + "',Strength='" + options.radius + "')");
} else {
if (originalPos != null) {
$(this).offset({left: originalPos.left, top: originalPos.top});
}
$(this).css("filter", "");
}
} else if (browser == "trident") {
var width = $(this).width();
var height = $(this).height();
var filter = disable == false ? 'url(\'#glow2' + oId + '\')' : "";
if (!options.element) {
var element = $('<svg id="' + oId + '" xmlns="http://www.w3.org/2000/svg">' +
'<defs>' +
'<filter id="glow2' + oId + '">' +
'<feGaussianBlur in="SourceAlpha" stdDeviation="' + options.radius + '"/>' +
'<feOffset dx="0" dy="0" result="offsetblur"/>' +
'<feFlood flood-color="' + options.color + '"/>' +
'<feComposite in2="offsetblur" operator="in"/>' +
'<feMerge>' +
'<feMergeNode/>' +
'<feMergeNode in="SourceGraphic"/>' +
'</feMerge>' +
'</filter>' +
'</defs>' +
'<image filter="' + filter +'" height="' + height + '" width="' + width + '" xlink:href="' + $(this).attr("src") + '"></image>' +
'</svg>');
element.attr("style", $(this).attr("style"));
$(this).replaceWith(element);
$(this).data('element', element);
} else {
if (filter == "") {
$(options.element).find("image").removeAttr("filter");
} else {
$(options.element).find("image").attr("filter", filter);
}
}
} else if (browser == "webkit" || browser == "blink") {
if (!disable) {
$(this).css("-webkit-filter", "drop-shadow(0px 0px " + options.radius + "px " + options.color + ")");
} else {
$(this).css("-webkit-filter", "");
}
//Mozilla uses SVG effects, so we need add SVG nodes at the HTML
} else if (browser == "gecko") {
if (!disable) {
$('body').append($('<svg id="filter_' + oId + '" height="0" xmlns="http://www.w3.org/2000/svg">' +
'<filter id="glow2' + oId + '">' +
'<feGaussianBlur in="SourceAlpha" stdDeviation="' + options.radius + '"/>' +
'<feOffset dx="0" dy="0" result="offsetblur"/>' +
'<feFlood flood-color="' + options.color + '"/>' +
'<feComposite in2="offsetblur" operator="in"/>' +
'<feMerge>' +
'<feMergeNode/>' +
'<feMergeNode in="SourceGraphic"/>' +
'</feMerge>' +
'</filter>' +
'</svg>'));
$(this).css('filter', 'url("#glow2' + oId + '")');
} else {
$(this).css("filter", "");
$('body').find("#filter_" + oId).remove();
}
}
});
};
$.fn.glow.enabled = true;
})(jQuery);