2 * jQuery corner plugin: simple corner rounding
3 * Examples and documentation at: http://jquery.malsup.com/corner/
4 * version 2.01 (08-SEP-2009)
5 * Dual licensed under the MIT and GPL licenses:
6 * http://www.opensource.org/licenses/mit-license.php
7 * http://www.gnu.org/licenses/gpl.html
11 * corner() takes a single string argument: $('#myDiv').corner("effect corners width")
13 * effect: name of the effect to apply, such as round, bevel, notch, bite, etc (default is round).
14 * corners: one or more of: top, bottom, tr, tl, br, or bl.
15 * by default, all four corners are adorned.
16 * width: width of the effect; in the case of rounded corners this is the radius.
17 * specify this value using the px suffix such as 10px (and yes, it must be pixels).
19 * @author Dave Methvin (http://methvin.com/jquery/jq-corner.html)
20 * @author Mike Alsup (http://jquery.malsup.com/corner/)
24 var moz = $.browser.mozilla && /gecko/i.test(navigator.userAgent);
25 var webkit = $.browser.safari && $.browser.version >= 3;
27 var expr = $.browser.msie && (function() {
28 var div = document.createElement('div');
29 try { div.style.setExpression('width','0+0'); }
30 catch(e) { return false; }
35 return parseInt($.css(el,p))||0;
38 var s = parseInt(s).toString(16);
39 return ( s.length < 2 ) ? '0'+s : s;
42 for ( ; node && node.nodeName.toLowerCase() != 'html'; node = node.parentNode ) {
43 var v = $.css(node,'backgroundColor');
44 if (v == 'rgba(0, 0, 0, 0)')
46 if (v.indexOf('rgb') >= 0) {
47 var rgb = v.match(/\d+/g);
48 return '#'+ hex2(rgb[0]) + hex2(rgb[1]) + hex2(rgb[2]);
50 if ( v && v != 'transparent' )
56 function getWidth(fx, i, width) {
58 case 'round': return Math.round(width*(1-Math.cos(Math.asin(i/width))));
59 case 'cool': return Math.round(width*(1+Math.cos(Math.asin(i/width))));
60 case 'sharp': return Math.round(width*(1-Math.cos(Math.acos(i/width))));
61 case 'bite': return Math.round(width*(Math.cos(Math.asin((width-i-1)/width))));
62 case 'slide': return Math.round(width*(Math.atan2(i,width/i)));
63 case 'jut': return Math.round(width*(Math.atan2(width,(width-i-1))));
64 case 'curl': return Math.round(width*(Math.atan(i)));
65 case 'tear': return Math.round(width*(Math.cos(i)));
66 case 'wicked': return Math.round(width*(Math.tan(i)));
67 case 'long': return Math.round(width*(Math.sqrt(i)));
68 case 'sculpt': return Math.round(width*(Math.log((width-i-1),width)));
69 case 'dog': return (i&1) ? (i+1) : width;
70 case 'dog2': return (i&2) ? (i+1) : width;
71 case 'dog3': return (i&3) ? (i+1) : width;
72 case 'fray': return (i%2)*width;
73 case 'notch': return width;
74 case 'bevel': return i+1;
78 $.fn.corner = function(options) {
79 // in 1.3+ we can fix mistakes with the ready state
80 if (this.length == 0) {
81 if (!$.isReady && this.selector) {
82 var s = this.selector, c = this.context;
84 $(s,c).corner(options);
90 return this.each(function(index){
92 var o = (options || $this.attr($.fn.corner.defaults.metaAttr) || '').toLowerCase();
93 var keep = /keep/.test(o); // keep borders?
94 var cc = ((o.match(/cc:(#[0-9a-f]+)/)||[])[1]); // corner color
95 var sc = ((o.match(/sc:(#[0-9a-f]+)/)||[])[1]); // strip color
96 var width = parseInt((o.match(/(\d+)px/)||[])[1]) || 10; // corner width
97 var re = /round|bevel|notch|bite|cool|sharp|slide|jut|curl|tear|fray|wicked|sculpt|long|dog3|dog2|dog/;
98 var fx = ((o.match(re)||['round'])[0]);
99 var edges = { T:0, B:1 };
101 TL: /top|tl|left/.test(o), TR: /top|tr|right/.test(o),
102 BL: /bottom|bl|left/.test(o), BR: /bottom|br|right/.test(o)
104 if ( !opts.TL && !opts.TR && !opts.BL && !opts.BR )
105 opts = { TL:1, TR:1, BL:1, BR:1 };
107 // support native rounding
108 if ($.fn.corner.defaults.useNative && fx == 'round' && (moz || webkit) && !cc && !sc) {
110 $this.css(moz ? '-moz-border-radius-topleft' : '-webkit-border-top-left-radius', width + 'px');
112 $this.css(moz ? '-moz-border-radius-topright' : '-webkit-border-top-right-radius', width + 'px');
114 $this.css(moz ? '-moz-border-radius-bottomleft' : '-webkit-border-bottom-left-radius', width + 'px');
116 $this.css(moz ? '-moz-border-radius-bottomright' : '-webkit-border-bottom-right-radius', width + 'px');
120 var strip = document.createElement('div');
121 strip.style.overflow = 'hidden';
122 strip.style.height = '1px';
123 strip.style.backgroundColor = sc || 'transparent';
124 strip.style.borderStyle = 'solid';
127 T: parseInt($.css(this,'paddingTop'))||0, R: parseInt($.css(this,'paddingRight'))||0,
128 B: parseInt($.css(this,'paddingBottom'))||0, L: parseInt($.css(this,'paddingLeft'))||0
131 if (typeof this.style.zoom != undefined) this.style.zoom = 1; // force 'hasLayout' in IE
132 if (!keep) this.style.border = 'none';
133 strip.style.borderColor = cc || gpc(this.parentNode);
134 var cssHeight = $.curCSS(this, 'height');
136 for (var j in edges) {
138 // only add stips if needed
139 if ((bot && (opts.BL || opts.BR)) || (!bot && (opts.TL || opts.TR))) {
140 strip.style.borderStyle = 'none '+(opts[j+'R']?'solid':'none')+' none '+(opts[j+'L']?'solid':'none');
141 var d = document.createElement('div');
142 $(d).addClass('jquery-corner');
145 bot ? this.appendChild(d) : this.insertBefore(d, this.firstChild);
147 if (bot && cssHeight != 'auto') {
148 if ($.css(this,'position') == 'static')
149 this.style.position = 'relative';
150 ds.position = 'absolute';
151 ds.bottom = ds.left = ds.padding = ds.margin = '0';
153 ds.setExpression('width', 'this.parentNode.offsetWidth');
157 else if (!bot && $.browser.msie) {
158 if ($.css(this,'position') == 'static')
159 this.style.position = 'relative';
160 ds.position = 'absolute';
161 ds.top = ds.left = ds.right = ds.padding = ds.margin = '0';
163 // fix ie6 problem when blocked element has a border width
165 var bw = sz(this,'borderLeftWidth') + sz(this,'borderRightWidth');
166 ds.setExpression('width', 'this.parentNode.offsetWidth - '+bw+'+ "px"');
172 ds.position = 'relative';
173 ds.margin = !bot ? '-'+pad.T+'px -'+pad.R+'px '+(pad.T-width)+'px -'+pad.L+'px' :
174 (pad.B-width)+'px -'+pad.R+'px -'+pad.B+'px -'+pad.L+'px';
177 for (var i=0; i < width; i++) {
178 var w = Math.max(0,getWidth(fx,i, width));
179 var e = strip.cloneNode(false);
180 e.style.borderWidth = '0 '+(opts[j+'R']?w:0)+'px 0 '+(opts[j+'L']?w:0)+'px';
181 bot ? d.appendChild(e) : d.insertBefore(e, d.firstChild);
188 $.fn.uncorner = function() {
190 this.css(moz ? '-moz-border-radius' : '-webkit-border-radius', 0);
191 $('div.jquery-corner', this).remove();
196 $.fn.corner.defaults = {
197 useNative: true, // true if plugin should attempt to use native browser support for border radius rounding
198 metaAttr: 'data-corner' // name of meta attribute to use for options