106 lines
4.6 KiB
JavaScript
106 lines
4.6 KiB
JavaScript
(function($) {
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$.fn.jqueryzoom = function(options) {
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var settings = {
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xzoom: 200,
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yzoom: 200,
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offset: 10,
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position: "right",
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lens: 1,
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preload: 1
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};
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if (options) {
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$.extend(settings, options)
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}
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var noalt = '';
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$(this).hover(function() {
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var imageLeft = $(this).offset().left;
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var imageTop = $(this).offset().top;
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var imageWidth = $(this).children('img').get(0).offsetWidth;
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var imageHeight = $(this).children('img').get(0).offsetHeight;
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noalt = $(this).children("img").attr("alt");
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var bigimage = $(this).children("img").attr("jqimg");
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$(this).children("img").attr("alt", '');
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if ($("div.zoomdiv").get().length == 0) {
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$(this).after("<div class='zoomdiv'><img class='bigimg' src='" + bigimage + "'/></div>");
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$(this).append("<div class='jqZoomPup'> </div>")
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}
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if (settings.position == "right") {
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if (imageLeft + imageWidth + settings.offset + settings.xzoom > screen.width) {
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leftpos = imageLeft - settings.offset - settings.xzoom
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} else {
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//leftpos = imageLeft + imageWidth + settings.offset
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leftpos = imageWidth + settings.offset;
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}
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} else {
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leftpos = imageLeft - settings.xzoom - settings.offset;
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if (leftpos < 0) {
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leftpos = imageLeft + imageWidth + settings.offset
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}
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}
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$("div.zoomdiv").css({
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top: 1,//imageTop,
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left: leftpos
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});
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$("div.zoomdiv").width(settings.xzoom);
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$("div.zoomdiv").height(settings.yzoom);
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$("div.zoomdiv").show();
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if (!settings.lens) {
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$(this).css('cursor', 'crosshair')
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}
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$(document.body).mousemove(function(e) {
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mouse = new MouseEvent(e);
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var bigwidth = $(".bigimg").get(0).offsetWidth;
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var bigheight = $(".bigimg").get(0).offsetHeight;
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var scaley = 'x';
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var scalex = 'y';
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if (isNaN(scalex) | isNaN(scaley)) {
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var scalex = (bigwidth / imageWidth);
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var scaley = (bigheight / imageHeight);
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$("div.jqZoomPup").width((settings.xzoom) / scalex);
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$("div.jqZoomPup").height((settings.yzoom) / scaley);
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if (settings.lens) {
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$("div.jqZoomPup").css('visibility', 'visible')
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}
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}
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xpos = mouse.x - $("div.jqZoomPup").width() / 2 - imageLeft;
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ypos = mouse.y - $("div.jqZoomPup").height() / 2 - imageTop;
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if (settings.lens) {
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xpos = (mouse.x - $("div.jqZoomPup").width() / 2 < imageLeft) ? 0: (mouse.x + $("div.jqZoomPup").width() / 2 > imageWidth + imageLeft) ? (imageWidth - $("div.jqZoomPup").width() - 2) : xpos;
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ypos = (mouse.y - $("div.jqZoomPup").height() / 2 < imageTop) ? 0: (mouse.y + $("div.jqZoomPup").height() / 2 > imageHeight + imageTop) ? (imageHeight - $("div.jqZoomPup").height() - 2) : ypos
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}
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if (settings.lens) {
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$("div.jqZoomPup").css({
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top: ypos,
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left: xpos
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})
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}
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scrolly = ypos;
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$("div.zoomdiv").get(0).scrollTop = scrolly * scaley;
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scrollx = xpos;
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$("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex
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})
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},
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function() {
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$(this).children("img").attr("alt", noalt);
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$(document.body).unbind("mousemove");
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if (settings.lens) {
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$("div.jqZoomPup").remove()
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}
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$("div.zoomdiv").remove()
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});
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count = 0;
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if (settings.preload) {
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$('body').append("<div style='display:none;' class='jqPreload" + count + "'>sdsdssdsd</div>");
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$(this).each(function() {
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var imagetopreload = $(this).children("img").attr("jqimg");
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var content = jQuery('div.jqPreload' + count + '').html();
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jQuery('div.jqPreload' + count + '').html(content + '<img src=\"' + imagetopreload + '\">')
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})
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}
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}
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})(jQuery);
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function MouseEvent(e) {
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this.x = e.pageX;
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this.y = e.pageY
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} |