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public/javascripts/jquery.svg/jquery.svganim.js

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/* http://keith-wood.name/svg.html
   SVG attribute animations for jQuery v1.4.3.
   Written by Keith Wood (kbwood{at}iinet.com.au) June 2008.
   Dual licensed under the GPL (http://dev.jquery.com/browser/trunk/jquery/GPL-LICENSE.txt) and 
   MIT (http://dev.jquery.com/browser/trunk/jquery/MIT-LICENSE.txt) licenses. 
   Please attribute the author if you use it. */

(function($) { // Hide scope, no $ conflict

// Enable animation for all of these SVG numeric attributes -
// named as svg-* or svg* (with first character upper case)
$.each(['x', 'y', 'width', 'height', 'rx', 'ry', 'cx', 'cy', 'r', 'x1', 'y1', 'x2', 'y2',
        'stroke-width', 'strokeWidth', 'opacity', 'fill-opacity', 'fillOpacity',
        'stroke-opacity', 'strokeOpacity', 'font-size', 'fontSize'],
    function(i, attrName) {
        var ccName = attrName.charAt(0).toUpperCase() + attrName.substr(1);
        $.fx.step['svg' + ccName] = $.fx.step['svg-' + attrName] = function(fx) {
            var realAttrName = $.svg._attrNames[attrName] || attrName;
            var attr = fx.elem.attributes.getNamedItem(realAttrName);
            if (!fx.set) {
                fx.start = (attr ? parseFloat(attr.nodeValue) : 0);
                var offset = fx.options.curAnim['svg-' + attrName] ||
                    fx.options.curAnim['svg' + ccName];
                if (/^[+-]=/.exec(offset)) {
                    fx.end = fx.start + parseFloat(offset.replace(/=/, ''));
                }
                $(fx.elem).css(realAttrName, '');
                fx.set = true;
            }
            var value = (fx.pos * (fx.end - fx.start) + fx.start) + (fx.unit == '%' ? '%' : '');
            (attr ? attr.nodeValue = value : fx.elem.setAttribute(realAttrName, value));
        };
    }
);

// Enable animation for the SVG viewBox attribute
$.fx.step['svgViewBox'] = $.fx.step['svg-viewBox'] = function(fx) {
    var attr = fx.elem.attributes.getNamedItem('viewBox');
    if (!fx.set) {
        fx.start = parseViewBox(attr ? attr.nodeValue : '');
        var offset = fx.options.curAnim['svg-viewBox'] || fx.options.curAnim['svgViewBox'];
        fx.end = parseViewBox(offset);
        if (/^[+-]=/.exec(offset)) {
            offset = offset.split(' ');
            while (offset.length < 4) {
                offset.push('0');
            }
            for (var i = 0; i < 4; i++) {
                if (/^[+-]=/.exec(offset[i])) {
                    fx.end[i] = fx.start[i] + parseFloat(offset[i].replace(/=/, ''));
                }
            }
        }
        fx.set = true;
    }
    var value = $.map(fx.start, function(n, i) {
        return (fx.pos * (fx.end[i] - n) + n);
    }).join(' ');
    (attr ? attr.nodeValue = value : fx.elem.setAttribute('viewBox', value));
};

/* Parse a viewBox definition: x, y, width, height.
   @param  value  (string) the definition
   @return  (number[4]) the extracted values */
function parseViewBox(value) {
    var viewBox = value.split(' ');
    for (var i = 0; i < viewBox.length; i++) {
        viewBox[i] = parseFloat(viewBox[i]);
        if (isNaN(viewBox[i])) {
            viewBox[i] = 0;
        }
    }
    while (viewBox.length < 4) {
        viewBox.push(0);
    }
    return viewBox;
}

// Enable animation for the SVG transform attribute
$.fx.step['svgTransform'] = $.fx.step['svg-transform'] = function(fx) {
    var attr = fx.elem.attributes.getNamedItem('transform');
    if (!fx.set) {
        fx.start = parseTransform(attr ? attr.nodeValue : '');
        fx.end = parseTransform(fx.end, fx.start);
        fx.set = true;
    }
    var transform = '';
    for (var i = 0; i < fx.end.order.length; i++) {
        switch (fx.end.order.charAt(i)) {
            case 't':
                transform += (fx.start.translateX != fx.end.translateX || fx.start.translateY != fx.end.translateY ?
                    ' translate(' + (fx.pos * (fx.end.translateX - fx.start.translateX) + fx.start.translateX) + ',' +
                    (fx.pos * (fx.end.translateY - fx.start.translateY) + fx.start.translateY) + ')' : '');
                break;
            case 's':
                transform += (fx.start.scaleX != fx.end.scaleX || fx.start.scaleY != fx.end.scaleY ? 
                    ' scale(' + (fx.pos * (fx.end.scaleX - fx.start.scaleX) + fx.start.scaleX) + ',' +
                    (fx.pos * (fx.end.scaleY - fx.start.scaleY) + fx.start.scaleY) + ')' : '');
                break;
            case 'r':
                transform += (fx.start.rotateA != fx.end.rotateA ||
                    fx.start.rotateX != fx.end.rotateX || fx.start.rotateY != fx.end.rotateY ?
                    ' rotate(' + (fx.pos * (fx.end.rotateA - fx.start.rotateA) + fx.start.rotateA) + ',' +
                    (fx.pos * (fx.end.rotateX - fx.start.rotateX) + fx.start.rotateX) + ',' +
                    (fx.pos * (fx.end.rotateY - fx.start.rotateY) + fx.start.rotateY) + ')' : '');
                break;
            case 'x':
                transform += (fx.start.skewX != fx.end.skewX ?
                    ' skewX(' + (fx.pos * (fx.end.skewX - fx.start.skewX) + fx.start.skewX) + ')' : '');
            case 'y':
                transform += (fx.start.skewY != fx.end.skewY ?
                    ' skewY(' + (fx.pos * (fx.end.skewY - fx.start.skewY) + fx.start.skewY) + ')' : '');
                break;
            case 'm':
                var matrix = '';
                for (var j = 0; j < 6; j++) {
                    matrix += ',' + (fx.pos * (fx.end.matrix[j] - fx.start.matrix[j]) + fx.start.matrix[j]);
                }                
                transform += ' matrix(' + matrix.substr(1) + ')';
                break;
        }
    }
    (attr ? attr.nodeValue = transform : fx.elem.setAttribute('transform', transform));
};

/* Decode a transform string and extract component values.
   @param  value     (string) the transform string to parse
   @param  original  (object) the settings from the original node
   @return  (object) the combined transformation attributes */
function parseTransform(value, original) {
    value = value || '';
    if (typeof value == 'object') {
        value = value.nodeValue;
    }
    var transform = $.extend({translateX: 0, translateY: 0, scaleX: 0, scaleY: 0,
        rotateA: 0, rotateX: 0, rotateY: 0, skewX: 0, skewY: 0,
        matrix: [0, 0, 0, 0, 0, 0]}, original || {});
    transform.order = '';
    var pattern = /([a-zA-Z]+)\(\s*([+-]?[\d\.]+)\s*(?:[\s,]\s*([+-]?[\d\.]+)\s*(?:[\s,]\s*([+-]?[\d\.]+)\s*(?:[\s,]\s*([+-]?[\d\.]+)\s*[\s,]\s*([+-]?[\d\.]+)\s*[\s,]\s*([+-]?[\d\.]+)\s*)?)?)?\)/g;
    var result = pattern.exec(value);
    while (result) {
        switch (result[1]) {
            case 'translate':
                transform.order += 't';
                transform.translateX = parseFloat(result[2]);
                transform.translateY = (result[3] ? parseFloat(result[3]) : 0);
                break;
            case 'scale':
                transform.order += 's';
                transform.scaleX = parseFloat(result[2]);
                transform.scaleY = (result[3] ? parseFloat(result[3]) : transform.scaleX);
                break;
            case 'rotate':
                transform.order += 'r';
                transform.rotateA = parseFloat(result[2]);
                transform.rotateX = (result[3] ? parseFloat(result[3]) : 0);
                transform.rotateY = (result[4] ? parseFloat(result[4]) : 0);
                break;
            case 'skewX':
                transform.order += 'x';
                transform.skewX = parseFloat(result[2]);
                break;
            case 'skewY':
                transform.order += 'y';
                transform.skewY = parseFloat(result[2]);
                break;
            case 'matrix':
                transform.order += 'm';
                transform.matrix = [parseFloat(result[2]), parseFloat(result[3]),
                    parseFloat(result[4]), parseFloat(result[5]),
                    parseFloat(result[6]), parseFloat(result[7])];
                break;
        }
        result = pattern.exec(value);
    }
    return transform;
}

// Enable animation for all of these SVG colour properties - based on jquery.color.js
$.each(['fill', 'stroke'],
    function(i, attrName) {
        var ccName = attrName.charAt(0).toUpperCase() + attrName.substr(1);
        $.fx.step['svg' + ccName] = $.fx.step['svg-' + attrName] = function(fx) {
            if (!fx.set) {
                fx.start = getColour(fx.elem, attrName);
                var toNone = (fx.end == 'none');
                fx.end = (toNone ? getColour(fx.elem.parentNode, attrName) : getRGB(fx.end));
                fx.end[3] = toNone;
                $(fx.elem).css(attrName, '');
                fx.set = true;
            }
            var attr = fx.elem.attributes.getNamedItem(attrName);
            var colour = 'rgb(' + [
                Math.min(Math.max(parseInt((fx.pos * (fx.end[0] - fx.start[0])) + fx.start[0], 10), 0), 255),
                Math.min(Math.max(parseInt((fx.pos * (fx.end[1] - fx.start[1])) + fx.start[1], 10), 0), 255),
                Math.min(Math.max(parseInt((fx.pos * (fx.end[2] - fx.start[2])) + fx.start[2], 10), 0), 255)
            ].join(',') + ')';
            colour = (fx.end[3] && fx.state == 1 ? 'none' : colour);
            (attr ? attr.nodeValue = colour : fx.elem.setAttribute(attrName, colour));
        }
    }
);

/* Find this attribute value somewhere up the node hierarchy.
   @param  elem  (element) the starting element to find the attribute
   @param  attr  (string) the attribute name
   @return  (number[3]) RGB components for the attribute colour */
function getColour(elem, attr) {
    var colour;
    do {
        colour = (elem.attributes && elem.attributes.getNamedItem(attr) ?
            elem.attributes.getNamedItem(attr).nodeValue : '');
        // Keep going until we find an element that has colour, or exit SVG
        if ((colour != '' && colour != 'none') || $(elem).hasClass('hasSVG')) {
            break; 
        }
    } while (elem = elem.parentNode);
    return getRGB(colour);
}

/* Parse strings looking for common colour formats.
   @param  colour  (string) colour description to parse
   @return  (number[3]) RGB components of this colour */
function getRGB(colour) {
    var result;
    // Check if we're already dealing with an array of colors
    if (colour && colour.constructor == Array && (colour.length == 3 || colour.length == 4)) {
        return colour;
    }
    // Look for rgb(num,num,num)
    if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(colour)) {
        return [parseInt(result[1], 10), parseInt(result[2], 10), parseInt(result[3], 10)];
    }
    // Look for rgb(num%,num%,num%)
    if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(colour)) {
        return [parseFloat(result[1]) * 2.55, parseFloat(result[2]) * 2.55,
            parseFloat(result[3]) * 2.55];
    }
    // Look for #a0b1c2
    if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(colour)) {
        return [parseInt(result[1], 16), parseInt(result[2], 16), parseInt(result[3], 16)];
    }
    // Look for #abc
    if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(colour)) {
        return [parseInt(result[1] + result[1], 16), parseInt(result[2] + result[2], 16),
            parseInt(result[3] + result[3], 16)];
    }
    // Otherwise, we're most likely dealing with a named color
    return colours[$.trim(colour).toLowerCase()] || colours['none'];
}

// The SVG named colours
var colours = {
    '':                        [255, 255, 255, 1],
    none:                    [255, 255, 255, 1],
    aliceblue:                [240, 248, 255],
    antiquewhite:            [250, 235, 215],
    aqua:                    [ 0, 255, 255],
    aquamarine:                [127, 255, 212],
    azure:                    [240, 255, 255],
    beige:                    [245, 245, 220],
    bisque:                    [255, 228, 196],
    black:                    [ 0, 0, 0],
    blanchedalmond:            [255, 235, 205],
    blue:                    [ 0, 0, 255],
    blueviolet:                [138, 43, 226],
    brown:                    [165, 42, 42],
    burlywood:                [222, 184, 135],
    cadetblue:                [ 95, 158, 160],
    chartreuse:                [127, 255, 0],
    chocolate:                [210, 105, 30],
    coral:                    [255, 127, 80],
    cornflowerblue:            [100, 149, 237],
    cornsilk:                [255, 248, 220],
    crimson:                [220, 20, 60],
    cyan:                    [ 0, 255, 255],
    darkblue:                [ 0, 0, 139],
    darkcyan:                [ 0, 139, 139],
    darkgoldenrod:            [184, 134, 11],
    darkgray:                [169, 169, 169],
    darkgreen:                [ 0, 100, 0],
    darkgrey:                [169, 169, 169],
    darkkhaki:                [189, 183, 107],
    darkmagenta:            [139, 0, 139],
    darkolivegreen:            [ 85, 107, 47],
    darkorange:                [255, 140, 0],
    darkorchid:                [153, 50, 204],
    darkred:                [139, 0, 0],
    darksalmon:                [233, 150, 122],
    darkseagreen:            [143, 188, 143],
    darkslateblue:            [ 72, 61, 139],
    darkslategray:            [ 47, 79, 79],
    darkslategrey:            [ 47, 79, 79],
    darkturquoise:            [ 0, 206, 209],
    darkviolet:                [148, 0, 211],
    deeppink:                [255, 20, 147],
    deepskyblue:            [ 0, 191, 255],
    dimgray:                [105, 105, 105],
    dimgrey:                [105, 105, 105],
    dodgerblue:                [ 30, 144, 255],
    firebrick:                [178, 34, 34],
    floralwhite:            [255, 250, 240],
    forestgreen:            [ 34, 139, 34],
    fuchsia:                [255, 0, 255],
    gainsboro:                [220, 220, 220],
    ghostwhite:                [248, 248, 255],
    gold:                    [255, 215, 0],
    goldenrod:                [218, 165, 32],
    gray:                    [128, 128, 128],
    grey:                    [128, 128, 128],
    green:                    [ 0, 128, 0],
    greenyellow:            [173, 255, 47],
    honeydew:                [240, 255, 240],
    hotpink:                [255, 105, 180],
    indianred:                [205, 92, 92],
    indigo:                    [ 75, 0, 130],
    ivory:                    [255, 255, 240],
    khaki:                    [240, 230, 140],
    lavender:                [230, 230, 250],
    lavenderblush:            [255, 240, 245],
    lawngreen:                [124, 252, 0],
    lemonchiffon:            [255, 250, 205],
    lightblue:                [173, 216, 230],
    lightcoral:                [240, 128, 128],
    lightcyan:                [224, 255, 255],
    lightgoldenrodyellow:    [250, 250, 210],
    lightgray:                [211, 211, 211],
    lightgreen:                [144, 238, 144],
    lightgrey:                [211, 211, 211],
    lightpink:                [255, 182, 193],
    lightsalmon:            [255, 160, 122],
    lightseagreen:            [ 32, 178, 170],
    lightskyblue:            [135, 206, 250],
    lightslategray:            [119, 136, 153],
    lightslategrey:            [119, 136, 153],
    lightsteelblue:            [176, 196, 222],
    lightyellow:            [255, 255, 224],
    lime:                    [ 0, 255, 0],
    limegreen:                [ 50, 205, 50],
    linen:                    [250, 240, 230],
    magenta:                [255, 0, 255],
    maroon:                    [128, 0, 0],
    mediumaquamarine:        [102, 205, 170],
    mediumblue:                [ 0, 0, 205],
    mediumorchid:            [186, 85, 211],
    mediumpurple:            [147, 112, 219],
    mediumseagreen:            [ 60, 179, 113],
    mediumslateblue:        [123, 104, 238],
    mediumspringgreen:        [ 0, 250, 154],
    mediumturquoise:        [ 72, 209, 204],
    mediumvioletred:        [199, 21, 133],
    midnightblue:            [ 25, 25, 112],
    mintcream:                [245, 255, 250],
    mistyrose:                [255, 228, 225],
    moccasin:                [255, 228, 181],
    navajowhite:            [255, 222, 173],
    navy:                    [ 0, 0, 128],
    oldlace:                [253, 245, 230],
    olive:                    [128, 128, 0],
    olivedrab:                [107, 142, 35],
    orange:                    [255, 165, 0],
    orangered:                [255, 69, 0],
    orchid:                    [218, 112, 214],
    palegoldenrod:            [238, 232, 170],
    palegreen:                [152, 251, 152],
    paleturquoise:            [175, 238, 238],
    palevioletred:            [219, 112, 147],
    papayawhip:                [255, 239, 213],
    peachpuff:                [255, 218, 185],
    peru:                    [205, 133, 63],
    pink:                    [255, 192, 203],
    plum:                    [221, 160, 221],
    powderblue:                [176, 224, 230],
    purple:                    [128, 0, 128],
    red:                    [255, 0, 0],
    rosybrown:                [188, 143, 143],
    royalblue:                [ 65, 105, 225],
    saddlebrown:            [139, 69, 19],
    salmon:                    [250, 128, 114],
    sandybrown:                [244, 164, 96],
    seagreen:                [ 46, 139, 87],
    seashell:                [255, 245, 238],
    sienna:                    [160, 82, 45],
    silver:                    [192, 192, 192],
    skyblue:                [135, 206, 235],
    slateblue:                [106, 90, 205],
    slategray:                [112, 128, 144],
    slategrey:                [112, 128, 144],
    snow:                    [255, 250, 250],
    springgreen:            [ 0, 255, 127],
    steelblue:                [ 70, 130, 180],
    tan:                    [210, 180, 140],
    teal:                    [ 0, 128, 128],
    thistle:                [216, 191, 216],
    tomato:                    [255, 99, 71],
    turquoise:                [ 64, 224, 208],
    violet:                    [238, 130, 238],
    wheat:                    [245, 222, 179],
    white:                    [255, 255, 255],
    whitesmoke:                [245, 245, 245],
    yellow:                    [255, 255, 0],
    yellowgreen:            [154, 205, 50]
};

})(jQuery);