/*
jQuery Loupe v1.2
Copyright (C) 2010 Chris Iufer (chris@iufer.com)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>

*/

$(function () {
    var jLoupe = {
        loupe: { 'width': 200, 'height': 200 },
        margin: { x: 6, y: 6 },
        cursorOffset: { x: 10, y: 10 },
        bgColor: '#999999'
    };

    jLoupe.radius = jLoupe.loupe.width / 2;

    $('<div id="thejLoupe" />')
		.css('position', 'absolute')
		.css('width', jLoupe.loupe.width + 'px')
		.css('height', jLoupe.loupe.height + 'px')
		.css('backgroundColor', jLoupe.bgColor)
        .css('z-index', 1000)
		.hide()
		.appendTo('body');

    $('<div id="zoomWrapper" />')
		.css('width', jLoupe.loupe.width - jLoupe.margin.x * 2 + 'px')
		.css('height', jLoupe.loupe.height - jLoupe.margin.y * 2 + 'px')
		.css('backgroundRepeat', 'no-repeat')
		.css('marginLeft', jLoupe.margin.x + 'px')
		.css('marginTop', jLoupe.margin.y + 'px')
		.appendTo('#thejLoupe');

 /*   if ($.support.cssProperty('borderRadius')) {
        $('#thejLoupe, #zoomWrapper')
			.css('border-bottom-left-radius', jLoupe.radius)
			.css('border-bottom-right-radius', jLoupe.radius)
			.css('border-top-right-radius', jLoupe.radius)
			.css('-moz-border-radius-bottomright', jLoupe.radius)
			.css('-moz-border-radius-bottomleft', jLoupe.radius)
			.css('-moz-border-radius-topright', jLoupe.radius);
    }  */

    $.fn.loupe = function (options) {
        if (!this.length) return this;

        this.each(function () {
            var h = $(this).parent('a').attr('href');
            var s = $(this).attr('src');
            s = (h) ? h : s;
            var i = $('<img />').attr('src', s);
            $(this).data('zoom', i);
        })
	    .bind('mousemove', function (e) {
	        var o = $(this).offset();
	        var i = $(this).data('zoom');
	        $('#zoomWrapper').css('backgroundImage', 'url(' + $(i).attr('src') + ')');

	        if (e.pageX || e.pageY) {
	            posx = e.pageX;
	            posy = e.pageY;
	        }
	        else if (e.clientX || e.clientY) {
	            posx = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
	            posy = e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
	        }
	        $('#thejLoupe').offset({ top: posy + jLoupe.cursorOffset.y, left: posx + jLoupe.cursorOffset.x });

	        zlo = (((posx - o.left) / this.width) * $(i).attr('width') * -1) + (jLoupe.loupe.width / 2.5);
	        zto = (((posy - o.top) / this.height) * $(i).attr('height') * -1) + (jLoupe.loupe.height / 2.5);

	        $('#zoomWrapper').css('backgroundPosition', zlo + 'px ' + zto + 'px');
	    })
	    .bind('mouseout', function () {
	        $(this).data('zoom').hide();
	        $('#thejLoupe').hide();
	    })
	    .bind('mouseover', function () {
	        $(this).data('zoom').show();
	        $('#thejLoupe').show();
	    });

        return this;
    };

});

$.support.cssProperty = (function () {
    function cssProperty(p, rp) {
        var b = document.body || document.documentElement,
    s = b.style;

        // No css support detected
        if (typeof s == 'undefined') { return false; }

        // Tests for standard prop
        if (typeof s[p] == 'string') { return rp ? p : true; }

        // Tests for vendor specific prop
        v = ['Moz', 'Webkit', 'Khtml', 'O', 'Ms'],
    p = p.charAt(0).toUpperCase() + p.substr(1);
        for (var i = 0; i < v.length; i++) {
            if (typeof s[v[i] + p] == 'string') { return rp ? (v[i] + p) : true; }
        }
    }

    return cssProperty;
})();