https://professionalsecurity.co.uk/wp-content/plugins/accessibility-font-resizer//js/script.js

1/*************************************************************************************************
2 * Accessibility Font Resizer
3 * 
4 * Project URL : https://github.com/SatelliteWP/accessibility-font-resizer
5 * 
6 * By SatelliteWP - 2019
7 * https://www.SatelliteWP.som
8 * 
9 ************************************************************************************************/
10
11/**
12 * When document is ready
13 */
14jQuery(document).ready(function($) {
15    
16    // Direct call to normal size
17    $('#afr_normal, .afr_normal, #afr-normal, .arf-normal, .afr-normal').click(function(e) {
18        if (afr_debug) { console.log('AFR - Click normal size'); }
19        afr(afr_sizes['n']);
20        e.preventDefault();
21    });
22
23    // Direct call to large size
24    $('#afr_large, .afr_large, #afr-large, .afr-large').click(function(e) {
25        if (afr_debug) { console.log('AFR - Click large size'); }
26        afr(afr_sizes['l']);
27        e.preventDefault();
28    });
29
30    // Direct call to very large size
31    $('#afr_xlarge, .afr_xlarge, #afr-xlarge, .afr-xlarge').click(function(e) {
32        if (afr_debug) { console.log('AFR - Click very large size'); }
33        afr(afr_sizes['xl']);
34        e.preventDefault();
35    });
36
37    // setup
38    afr(afr_sizes['n'], true);
39    
40    // Get previously set size
41    var s = afr_gc('afr_size');
42
43    // Set size if previously set
44    if (s) afr(s);				
45});
46
47/**
48 * Change font size (or  setup)
49 * 
50 * @param {int} size Size in percentage
51 * @param {boolean} setup Setup time ?
52 */
53function afr(size, setup) {
54    setup = (typeof setup == 'undefined') ? false : setup;
55
56    if (typeof size == 'undefined') return;
57
58    var el = jQuery('body'), tags;
59
60    for ( var i = 0 ; i < afr_elems.length ; i++ ) {
61        tags = el.find( afr_elems[ i ] );
62        for ( var j = 0 ; j < tags.length ; j++ ) {
63
64            if (setup) {
65                var ofs = jQuery(tags[ j ]).css('font-size');
66                jQuery(tags[ j ]).attr('data-swp-font-size', ofs);
67                if (afr_debug) console.log('Original font size: ' + ofs);
68            }
69            else {
70                var sfs = jQuery(tags[ j ]).attr('data-swp-font-size');
71                var new_size = parseFloat(sfs) * size / 100;
72                var old_size = jQuery(tags[ j ]).css('font-size');
73                jQuery(tags[ j ]).css('font-size', new_size + "px");
74
75                if (afr_debug) console.log('change from: ' + old_size + '. To: ' + new_size);
76
77                afr_sc('afr_size', size , afr_days);
78            }
79        }
80    }
81    return 1;
82}
83
84/**
85 * Set cookie value
86 * 
87 * @param {string} cname Cookie name
88 * @param {string} cvalue Cookie value
89 * @param {int} expdays Expiration in days
90 */
91function afr_sc(cname, cvalue, expdays) {
92  var d = new Date();
93  d.setTime(d.getTime() + (expdays*24*60*60*1000));
94  var expires = "expires="+ d.toUTCString();
95  document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
96}
97
98/**
99 * Get cookie value
100 * 
101 * @param {string} cname Cookie name
102 * 
103 * @returns {string} Value
104 */
105function afr_gc(cname) {
106  var name = cname + "=";
107  var decodedCookie = decodeURIComponent(document.cookie);
108  var ca = decodedCookie.split(';');
109  for(var i = 0; i <ca.length; i++) {
110    var c = ca[i];
111    while (c.charAt(0) == ' ') {
112      c = c.substring(1);
113    }
114    if (c.indexOf(name) == 0) {
115      return c.substring(name.length, c.length);
116    }
117  }
118  return null;
119}