User:Slevinski/signwriting viewer.js

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/**
 * SignWriting Styled Viewer
 *
 * Copyright 2007-2013 Stephen E Slevinski Jr
 * Steve (Slevin@signpuddle.net)
 *
 * This file is part of SWIS: the SignWriting Icon Server.
 *
 * SWIS 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.
 *
 * SWIS 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 SWIS.  If not, see <http://www.gnu.org/licenses/>.
 *
 * END Copyright
 *
 * @copyright 2007-2013 Stephen E Slevinski Jr
 * @author Steve (slevin@signpuddle.net)
 * @license http://opensource.org/licenses/GPL-2.0 GPL
 * @access public
 * @version 1.0.0.rc.2
 * @filesource
 *
 */

/**
 * Section 1
 *   define a function for regular expression search and replace
 *   then, crawl the document object model for TEXT elements with matching strings and apply the function
 */
signwriting_styled=(function (node) {
    var u = 'http://swis.wmflabs.org/',
        v = '1.0.0-rc.2',
        s1, s2, d, p, r, r2, o, f;
    r = /(A(S[123][0-9a-f]{2}[0-5][0-9a-f])+)?[BLMR]([0-9]{3}x[0-9]{3})(S[123][0-9a-f]{2}[0-5][0-9a-f][0-9]{3}x[0-9]{3})*|S38[7-9ab][0-5][0-9a-f][0-9]{3}x[0-9]{3}/g;
    r2 = /[0-9]{3}x[0-9]{3}/g;
    o = {};
    o.L = -1;
    o.R = 1;

    function rgbToHex(rgb) {
        if (rgb.match(/^[0-9A-Fa-f]{6}$/)) {
            return rgb;
        }
        var rgbvals = /rgba?\((.+),(.+),(.+)\)/i.exec(rgb);
        if (!rgbvals) {
            return 'ffffff';
        }
        var rval = parseInt(rgbvals[1]);
        var gval = parseInt(rgbvals[2]);
        var bval = parseInt(rgbvals[3]);
        var pad = function (value) {
            return (value.length < 2 ? '0' : '') + value;
        };
        return pad(rval.toString(16)) + pad(gval.toString(16)) + pad(bval.toString(16));
    }
    var color, background, size;
    f = function (m) {
        var x, x1 = 500,
            x2 = 500,
            y, y1 = 500,
            y2 = 500,
            k, w, h, l;
        k = m.charAt(0);
        m.replace(r2, function ($0) {
            x = parseInt($0.slice(0, 3));
            y = parseInt($0.slice(4, 7));
            x1 = Math.min(x1, x);
            x2 = Math.max(x2, x);
            y1 = Math.min(y1, y);
            y2 = Math.max(y2, y);
        });
        if (k == 'S') {
            x2 = 1000 - x1;
            y2 = 1000 - y1;
        }
        w = (x2 - x1) * size;
        h = (y2 - y1) * size;
        l = o[k] || 0;
        l = (l * 75 + x1 - 400) * size;
        return '<div style="padding:10px;position:relative;background-repeat:no-repeat;background-origin:content-box;width:' + w + 'px;height:' + h + 'px;left:' + l + 'px;background-image:url(\'' + u + 'glyphogram.php?font=svg&text=' + m + '&line=' + color + '&fill=' + background + '&size=' + size + '\');"><span style="display:table-cell;vertical-align:middle;font-size:0%;height:inherit;">' + m + '</span></div>';
    };

    function fswReplace(node) {
        if (node.nodeType == 3) {
            color = rgbToHex(jQuery(node.parentNode).css('color'));
            background = jQuery(node.parentNode).css('background-color');
            parent = node.parentNode;
            while (background.toString() == 'rgba(0, 0, 0, 0)' || background.toString() == 'transparent') {
                parent = parent.parentNode;
                background = jQuery(parent).css('background-color');
            }
            background = rgbToHex(background);
            size = parseInt(jQuery(node.parentNode).css('font-size')) / 20;
            s1 = node.nodeValue;
            s2 = s1.replace(r, f);
            if (s1 != s2) {
                p = node.parentNode;
                d = document.createElement('div');
                d.innerHTML = s2;
                p.replaceChild(d, node);
            }
        } else {
            var nodes;
            if (node.nodeName != 'TEXTAREA') nodes = node.childNodes;
            if (nodes) {
                var i = nodes.length;
                while (i--) fswReplace(nodes[i]);
            }
        }
    };
    if (!node || !node.nodeType) node = document.body;
    fswReplace(node);
});
//page should be loaded so call the function to crawl the DOM
signwriting_styled();