/*
 * This program is distributed under the terms of the
 * GNU General Public License, version 2.
 *
 */
(function ($) {

/*
 * cursorrat
 *
 * Usage:
 *   jQuery.cursorrat({
 *       path: '/images/',
 *       images: ['cur01.gif', 'cur02.gif', 'cur03.gif', 'cur04.gif']
 *   });
 *
 * css:
 *   span.rat { 
 *     position: absolute; 
 *     width: 16px; 
 *     height: 16px;
 *   }
 *
 */
$.cursorrat = function (options) {
    var defaults = {
        path: '/',
        images: [],
        duration: 20,
        interval: 8
    };
    var opts = $.extend(defaults, options);
    var $cursorrat = $('.cursorrat');
    if (!$cursorrat.length) {
        $('body').append('<div class="cursorrat"></div>');
        var duration = new Array();
        var msec = opts.duration;
        $.each(opts.images, function (index, value) {
            $('.cursorrat').prepend('<span id="rat' + index + '" class="rat"><img src="' + opts.path + value + '"></span>');
            duration[index] = msec;
            $(document).mousemove(function (e) {
                $('#rat' + index).animate({
                    'left': e.pageX + 16,
                    'top': e.pageY
                }, duration[index]);
            });
            msec += opts.interval;
        });
    }
};

/*
 * blink
 *
 * Usage:
 *   jQuery('.blink').blink();
 *
 */
$.fn.blink = function (options) {
    var defaults = {
        interval: 400
    };
    var opts = $.extend(defaults, options);
    return this.each(function () {
        var $obj = $(this);
        setInterval(function () {
            $obj.css('visibility', $obj.css('visibility') == 'visible' ? 'hidden' : 'visible');
        }, opts.interval);
    });
};

/*
 * blink
 *
 * Usage:
 *   jQuery('.marquee').marquee();
 *   jQuery('.marquee').marquee({direction: 'right'});
 *   jQuery('.marquee3').marquee({behavior: 'alternate', scrollamount: 8});
 *
 * css:
 *   span.marquee { 
 *     position: relative;
 *     width: 100px; 
 *   }
 *
 */
$.fn.marquee = function (options) {
    var defaults = {
        delay: 100,
        behavior: 'scroll',
        direction: 'left',
        scrollamount: 6
    };
    var opts = $.extend(defaults, options);
    return this.each(function () {
        var $obj = $(this);
        var width = $obj.parent().width() - $obj.width();
        var start;
        var position;
        var offset = 0;
        var sign;
        switch (opts.direction) {
        case 'right':
            sign = 1;
            start = 0;
            break;
        default:
            // 'left'
            sign = -1;
            start = width;
        }
        position = start;
        setInterval(function () {
            $obj.css({
                left: position + sign * offset
            });
            if (offset < width) {
                offset += opts.scrollamount;
            } else {
                if (opts.behavior == 'alternate') {
                    sign *= -1;
                    if (sign == 1) {
                        start = 0;
                    } else {
                        start = width;
                    }
                }
                offset = 0;
                position = start;
            }
        }, opts.delay);
    });
};

})(jQuery);