126 lines
3.9 KiB
JavaScript
126 lines
3.9 KiB
JavaScript
/**
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* jQuery (PNG Fix) v1.2
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* Microsoft Internet Explorer 24bit PNG Fix
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*
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* The MIT License
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*
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* Copyright (c) 2007 Paul Campbell (pauljamescampbell.co.uk)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @param Object
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* @return Array
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*/
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(function($) {
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$.fn.pngfix = function(options) {
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// Review the Microsoft IE developer library for AlphaImageLoader reference
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// http://msdn2.microsoft.com/en-us/library/ms532969(VS.85).aspx
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// ECMA scope fix
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var elements = this;
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var settings = $.extend({
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imageFixSrc: false,
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sizingMethod: false
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}, options);
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if(!$.browser.msie || ($.browser.msie && $.browser.version >= 7)) {
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return(elements);
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}
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function setFilter(el, path, mode) {
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var fs = el.attr("filters");
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var alpha = "DXImageTransform.Microsoft.AlphaImageLoader";
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if (fs[alpha]) {
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fs[alpha].enabled = true;
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fs[alpha].src = path;
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fs[alpha].sizingMethod = mode;
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} else {
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el.css("filter", 'progid:' + alpha + '(enabled="true", sizingMethod="' + mode + '", src="' + path + '")');
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}
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}
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function setDOMElementWidth(el) {
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if(el.css("width") == "auto" & el.css("height") == "auto") {
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el.css("width", el.attr("offsetWidth") + "px");
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}
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}
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return(
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elements.each(function() {
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// Scope
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var el = $(this);
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if(el.attr("tagName").toUpperCase() == "IMG" && (/\.png/i).test(el.attr("src"))) {
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if(!settings.imageFixSrc) {
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// Wrap the <img> in a <span> then apply style/filters,
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// removing the <img> tag from the final render
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el.wrap("<span></span>");
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var par = el.parent();
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par.css({
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height: el.height(),
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width: el.width(),
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display: "inline-block"
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});
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setFilter(par, el.attr("src"), "scale");
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el.remove();
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} else if((/\.gif/i).test(settings.imageFixSrc)) {
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// Replace the current image with a transparent GIF
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// and apply the filter to the background of the
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// <img> tag (not the preferred route)
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setDOMElementWidth(el);
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setFilter(el, el.attr("src"), "image");
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el.attr("src", settings.imageFixSrc);
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}
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} else {
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var bg = new String(el.css("backgroundImage"));
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var matches = bg.match(/^url\("(.*)"\)$/);
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if(matches && matches.length) {
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// Elements with a PNG as a backgroundImage have the
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// filter applied with a sizing method relevant to the
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// background repeat type
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setDOMElementWidth(el);
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el.css("backgroundImage", "none");
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// Restrict scaling methods to valid MSDN defintions (or one custom)
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var sc = "crop";
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if(settings.sizingMethod) {
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sc = settings.sizingMethod;
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}
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setFilter(el, matches[1], sc);
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// Fix IE peek-a-boo bug for internal links
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// within that DOM element
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el.find("a").each(function() {
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$(this).css("position", "relative");
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});
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}
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}
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})
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);
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}
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})(jQuery) |