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472 lines
16 KiB
472 lines
16 KiB
/**
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* DD_roundies, this adds rounded-corner CSS in standard browsers and VML sublayers in IE that accomplish a similar appearance when comparing said browsers.
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* Author: Drew Diller
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* Email: drew.diller@gmail.com
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* URL: http://www.dillerdesign.com/experiment/DD_roundies/
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* Version: 0.0.2a
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* Licensed under the MIT License: http://dillerdesign.com/experiment/DD_roundies/#license
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*
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* Usage:
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* DD_roundies.addRule('#doc .container', '10px 5px'); // selector and multiple radii
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* DD_roundies.addRule('.box', 5, true); // selector, radius, and optional addition of border-radius code for standard browsers.
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*
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* Just want the PNG fixing effect for IE6, and don't want to also use the DD_belatedPNG library? Don't give any additional arguments after the CSS selector.
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* DD_roundies.addRule('.your .example img');
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**/
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var DD_roundies = {
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ns: 'DD_roundies',
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IE6: false,
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IE7: false,
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IE8: false,
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IEversion: function() {
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if (document.documentMode != 8 && document.namespaces && !document.namespaces[this.ns]) {
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this.IE6 = true;
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this.IE7 = true;
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}
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else if (document.documentMode == 8) {
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this.IE8 = true;
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}
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},
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querySelector: document.querySelectorAll,
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selectorsToProcess: [],
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imgSize: {},
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createVmlNameSpace: function() { /* enable VML */
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if (this.IE6 || this.IE7) {
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document.namespaces.add(this.ns, 'urn:schemas-microsoft-com:vml');
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}
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if (this.IE8) {
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document.writeln('<?import namespace="' + this.ns + '" implementation="#default#VML" ?>');
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}
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},
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createVmlStyleSheet: function() { /* style VML, enable behaviors */
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/*
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Just in case lots of other developers have added
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lots of other stylesheets using document.createStyleSheet
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and hit the 31-limit mark, let's not use that method!
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further reading: http://msdn.microsoft.com/en-us/library/ms531194(VS.85).aspx
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*/
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var style = document.createElement('style');
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document.documentElement.firstChild.insertBefore(style, document.documentElement.firstChild.firstChild);
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if (style.styleSheet) { /* IE */
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try {
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var styleSheet = style.styleSheet;
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styleSheet.addRule(this.ns + '\\:*', '{behavior:url(#default#VML)}');
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this.styleSheet = styleSheet;
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} catch(err) {}
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}
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else {
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this.styleSheet = style;
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}
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},
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/**
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* Method to use from afar - refer to it whenever.
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* Example for IE only: DD_roundies.addRule('div.boxy_box', '10px 5px');
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* Example for IE, Firefox, and WebKit: DD_roundies.addRule('div.boxy_box', '10px 5px', true);
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* @param {String} selector - REQUIRED - a CSS selector, such as '#doc .container'
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* @param {Integer} radius - REQUIRED - the desired radius for the box corners
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* @param {Boolean} standards - OPTIONAL - true if you also wish to output -moz-border-radius/-webkit-border-radius/border-radius declarations
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**/
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addRule: function(selector, rad, standards) {
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if (typeof rad == 'undefined' || rad === null) {
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rad = 0;
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}
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if (rad.constructor.toString().search('Array') == -1) {
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rad = rad.toString().replace(/[^0-9 ]/g, '').split(' ');
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}
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for (var i=0; i<4; i++) {
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rad[i] = (!rad[i] && rad[i] !== 0) ? rad[Math.max((i-2), 0)] : rad[i];
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}
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if (this.styleSheet) {
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if (this.styleSheet.addRule) { /* IE */
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var selectors = selector.split(','); /* multiple selectors supported, no need for multiple calls to this anymore */
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for (var i=0; i<selectors.length; i++) {
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this.styleSheet.addRule(selectors[i], 'behavior:expression(DD_roundies.roundify.call(this, [' + rad.join(',') + ']))'); /* seems to execute the function without adding it to the stylesheet - interesting... */
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}
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}
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else if (standards) {
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var moz_implementation = rad.join('px ') + 'px';
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this.styleSheet.appendChild(document.createTextNode(selector + ' {border-radius:' + moz_implementation + '; -moz-border-radius:' + moz_implementation + ';}'));
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this.styleSheet.appendChild(document.createTextNode(selector + ' {-webkit-border-top-left-radius:' + rad[0] + 'px ' + rad[0] + 'px; -webkit-border-top-right-radius:' + rad[1] + 'px ' + rad[1] + 'px; -webkit-border-bottom-right-radius:' + rad[2] + 'px ' + rad[2] + 'px; -webkit-border-bottom-left-radius:' + rad[3] + 'px ' + rad[3] + 'px;}'));
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}
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}
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else if (this.IE8) {
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this.selectorsToProcess.push({'selector':selector, 'radii':rad});
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}
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},
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readPropertyChanges: function(el) {
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switch (event.propertyName) {
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case 'style.border':
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case 'style.borderWidth':
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case 'style.padding':
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this.applyVML(el);
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break;
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case 'style.borderColor':
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this.vmlStrokeColor(el);
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break;
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case 'style.backgroundColor':
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case 'style.backgroundPosition':
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case 'style.backgroundRepeat':
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this.applyVML(el);
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break;
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case 'style.display':
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el.vmlBox.style.display = (el.style.display == 'none') ? 'none' : 'block';
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break;
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case 'style.filter':
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this.vmlOpacity(el);
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break;
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case 'style.zIndex':
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el.vmlBox.style.zIndex = el.style.zIndex;
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break;
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}
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},
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applyVML: function(el) {
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el.runtimeStyle.cssText = '';
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this.vmlFill(el);
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this.vmlStrokeColor(el);
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this.vmlStrokeWeight(el);
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this.vmlOffsets(el);
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this.vmlPath(el);
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this.nixBorder(el);
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this.vmlOpacity(el);
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},
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vmlOpacity: function(el) {
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if (el.currentStyle.filter.search('lpha') != -1) {
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var trans = el.currentStyle.filter;
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trans = parseInt(trans.substring(trans.lastIndexOf('=')+1, trans.lastIndexOf(')')), 10)/100;
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for (var v in el.vml) {
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el.vml[v].filler.opacity = trans;
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}
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}
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},
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vmlFill: function(el) {
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if (!el.currentStyle) {
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return;
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} else {
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var elStyle = el.currentStyle;
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}
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el.runtimeStyle.backgroundColor = '';
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el.runtimeStyle.backgroundImage = '';
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var noColor = (elStyle.backgroundColor == 'transparent');
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var noImg = true;
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if (elStyle.backgroundImage != 'none' || el.isImg) {
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if (!el.isImg) {
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el.vmlBg = elStyle.backgroundImage;
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el.vmlBg = el.vmlBg.substr(5, el.vmlBg.lastIndexOf('")')-5);
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}
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else {
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el.vmlBg = el.src;
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}
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var lib = this;
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if (!lib.imgSize[el.vmlBg]) { /* determine size of loaded image */
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var img = document.createElement('img');
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img.attachEvent('onload', function() {
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this.width = this.offsetWidth; /* weird cache-busting requirement! */
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this.height = this.offsetHeight;
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lib.vmlOffsets(el);
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});
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img.className = lib.ns + '_sizeFinder';
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img.runtimeStyle.cssText = 'behavior:none; position:absolute; top:-10000px; left:-10000px; border:none;'; /* make sure to set behavior to none to prevent accidental matching of the helper elements! */
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img.src = el.vmlBg;
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img.removeAttribute('width');
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img.removeAttribute('height');
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document.body.insertBefore(img, document.body.firstChild);
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lib.imgSize[el.vmlBg] = img;
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}
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el.vml.image.filler.src = el.vmlBg;
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noImg = false;
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}
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el.vml.image.filled = !noImg;
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el.vml.image.fillcolor = 'none';
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el.vml.color.filled = !noColor;
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el.vml.color.fillcolor = elStyle.backgroundColor;
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el.runtimeStyle.backgroundImage = 'none';
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el.runtimeStyle.backgroundColor = 'transparent';
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},
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vmlStrokeColor: function(el) {
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el.vml.stroke.fillcolor = el.currentStyle.borderColor;
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},
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vmlStrokeWeight: function(el) {
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var borders = ['Top', 'Right', 'Bottom', 'Left'];
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el.bW = {};
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for (var b=0; b<4; b++) {
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el.bW[borders[b]] = parseInt(el.currentStyle['border' + borders[b] + 'Width'], 10) || 0;
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}
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},
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vmlOffsets: function(el) {
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var dims = ['Left', 'Top', 'Width', 'Height'];
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for (var d=0; d<4; d++) {
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el.dim[dims[d]] = el['offset'+dims[d]];
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}
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var assign = function(obj, topLeft) {
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obj.style.left = (topLeft ? 0 : el.dim.Left) + 'px';
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obj.style.top = (topLeft ? 0 : el.dim.Top) + 'px';
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obj.style.width = el.dim.Width + 'px';
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obj.style.height = el.dim.Height + 'px';
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};
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for (var v in el.vml) {
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var mult = (v == 'image') ? 1 : 2;
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el.vml[v].coordsize = (el.dim.Width*mult) + ', ' + (el.dim.Height*mult);
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assign(el.vml[v], true);
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}
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assign(el.vmlBox, false);
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if (DD_roundies.IE8) {
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el.vml.stroke.style.margin = '-1px';
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if (typeof el.bW == 'undefined') {
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this.vmlStrokeWeight(el);
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}
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el.vml.color.style.margin = (el.bW.Top-1) + 'px ' + (el.bW.Left-1) + 'px';
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}
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},
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vmlPath: function(el) {
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var coords = function(direction, w, h, r, aL, aT, mult) {
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var cmd = direction ? ['m', 'qy', 'l', 'qx', 'l', 'qy', 'l', 'qx', 'l'] : ['qx', 'l', 'qy', 'l', 'qx', 'l', 'qy', 'l', 'm']; /* whoa */
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aL *= mult;
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aT *= mult;
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w *= mult;
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h *= mult;
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var R = r.slice(); /* do not affect original array */
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for (var i=0; i<4; i++) {
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R[i] *= mult;
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R[i] = Math.min(w/2, h/2, R[i]); /* make sure you do not get funky shapes - pick the smallest: half of the width, half of the height, or current value */
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}
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var coords = [
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cmd[0] + Math.floor(0+aL) +','+ Math.floor(R[0]+aT),
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cmd[1] + Math.floor(R[0]+aL) +','+ Math.floor(0+aT),
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cmd[2] + Math.ceil(w-R[1]+aL) +','+ Math.floor(0+aT),
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cmd[3] + Math.ceil(w+aL) +','+ Math.floor(R[1]+aT),
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cmd[4] + Math.ceil(w+aL) +','+ Math.ceil(h-R[2]+aT),
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cmd[5] + Math.ceil(w-R[2]+aL) +','+ Math.ceil(h+aT),
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cmd[6] + Math.floor(R[3]+aL) +','+ Math.ceil(h+aT),
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cmd[7] + Math.floor(0+aL) +','+ Math.ceil(h-R[3]+aT),
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cmd[8] + Math.floor(0+aL) +','+ Math.floor(R[0]+aT)
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];
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if (!direction) {
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coords.reverse();
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}
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var path = coords.join('');
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return path;
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};
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if (typeof el.bW == 'undefined') {
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this.vmlStrokeWeight(el);
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}
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var bW = el.bW;
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var rad = el.DD_radii.slice();
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/* determine outer curves */
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var outer = coords(true, el.dim.Width, el.dim.Height, rad, 0, 0, 2);
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/* determine inner curves */
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rad[0] -= Math.max(bW.Left, bW.Top);
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rad[1] -= Math.max(bW.Top, bW.Right);
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rad[2] -= Math.max(bW.Right, bW.Bottom);
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rad[3] -= Math.max(bW.Bottom, bW.Left);
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for (var i=0; i<4; i++) {
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rad[i] = Math.max(rad[i], 0);
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}
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var inner = coords(false, el.dim.Width-bW.Left-bW.Right, el.dim.Height-bW.Top-bW.Bottom, rad, bW.Left, bW.Top, 2);
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var image = coords(true, el.dim.Width-bW.Left-bW.Right+1, el.dim.Height-bW.Top-bW.Bottom+1, rad, bW.Left, bW.Top, 1);
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/* apply huge path string */
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el.vml.color.path = inner;
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el.vml.image.path = image;
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el.vml.stroke.path = outer + inner;
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this.clipImage(el);
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},
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nixBorder: function(el) {
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var s = el.currentStyle;
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var sides = ['Top', 'Left', 'Right', 'Bottom'];
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for (var i=0; i<4; i++) {
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el.runtimeStyle['padding' + sides[i]] = (parseInt(s['padding' + sides[i]], 10) || 0) + (parseInt(s['border' + sides[i] + 'Width'], 10) || 0) + 'px';
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}
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el.runtimeStyle.border = 'none';
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},
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clipImage: function(el) {
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var lib = DD_roundies;
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if (!el.vmlBg || !lib.imgSize[el.vmlBg]) {
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return;
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}
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var thisStyle = el.currentStyle;
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var bg = {'X':0, 'Y':0};
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var figurePercentage = function(axis, position) {
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var fraction = true;
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switch(position) {
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case 'left':
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case 'top':
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bg[axis] = 0;
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break;
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case 'center':
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bg[axis] = 0.5;
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break;
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case 'right':
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case 'bottom':
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bg[axis] = 1;
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break;
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default:
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if (position.search('%') != -1) {
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bg[axis] = parseInt(position, 10) * 0.01;
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}
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else {
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fraction = false;
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}
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}
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var horz = (axis == 'X');
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bg[axis] = Math.ceil(fraction ? (( el.dim[horz ? 'Width' : 'Height'] - (el.bW[horz ? 'Left' : 'Top'] + el.bW[horz ? 'Right' : 'Bottom']) ) * bg[axis]) - (lib.imgSize[el.vmlBg][horz ? 'width' : 'height'] * bg[axis]) : parseInt(position, 10));
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bg[axis] += 1;
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};
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for (var b in bg) {
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figurePercentage(b, thisStyle['backgroundPosition'+b]);
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}
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el.vml.image.filler.position = (bg.X/(el.dim.Width-el.bW.Left-el.bW.Right+1)) + ',' + (bg.Y/(el.dim.Height-el.bW.Top-el.bW.Bottom+1));
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var bgR = thisStyle.backgroundRepeat;
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var c = {'T':1, 'R':el.dim.Width+1, 'B':el.dim.Height+1, 'L':1}; /* these are defaults for repeat of any kind */
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var altC = { 'X': {'b1': 'L', 'b2': 'R', 'd': 'Width'}, 'Y': {'b1': 'T', 'b2': 'B', 'd': 'Height'} };
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if (bgR != 'repeat') {
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c = {'T':(bg.Y), 'R':(bg.X+lib.imgSize[el.vmlBg].width), 'B':(bg.Y+lib.imgSize[el.vmlBg].height), 'L':(bg.X)}; /* these are defaults for no-repeat - clips down to the image location */
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if (bgR.search('repeat-') != -1) { /* now let's revert to dC for repeat-x or repeat-y */
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var v = bgR.split('repeat-')[1].toUpperCase();
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c[altC[v].b1] = 1;
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c[altC[v].b2] = el.dim[altC[v].d]+1;
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}
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if (c.B > el.dim.Height) {
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c.B = el.dim.Height+1;
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}
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}
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el.vml.image.style.clip = 'rect('+c.T+'px '+c.R+'px '+c.B+'px '+c.L+'px)';
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},
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pseudoClass: function(el) {
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var self = this;
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setTimeout(function() { /* would not work as intended without setTimeout */
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self.applyVML(el);
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}, 1);
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},
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reposition: function(el) {
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this.vmlOffsets(el);
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this.vmlPath(el);
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},
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roundify: function(rad) {
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this.style.behavior = 'none';
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if (!this.currentStyle) {
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return;
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}
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else {
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var thisStyle = this.currentStyle;
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}
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var allowed = {BODY: false, TABLE: false, TR: false, TD: false, SELECT: false, OPTION: false, TEXTAREA: false};
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if (allowed[this.nodeName] === false) { /* elements not supported yet */
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return;
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}
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var self = this; /* who knows when you might need a setTimeout */
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var lib = DD_roundies;
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this.DD_radii = rad;
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this.dim = {};
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/* attach handlers */
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var handlers = {resize: 'reposition', move: 'reposition'};
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if (this.nodeName == 'A') {
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var moreForAs = {mouseleave: 'pseudoClass', mouseenter: 'pseudoClass', focus: 'pseudoClass', blur: 'pseudoClass'};
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for (var a in moreForAs) {
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handlers[a] = moreForAs[a];
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}
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}
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for (var h in handlers) {
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this.attachEvent('on' + h, function() {
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lib[handlers[h]](self);
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});
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}
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this.attachEvent('onpropertychange', function() {
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lib.readPropertyChanges(self);
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});
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/* ensure that this elent and its parent is given hasLayout (needed for accurate positioning) */
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var giveLayout = function(el) {
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el.style.zoom = 1;
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if (el.currentStyle.position == 'static') {
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el.style.position = 'relative';
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}
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};
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giveLayout(this.offsetParent);
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giveLayout(this);
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/* create vml elements */
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this.vmlBox = document.createElement('ignore'); /* IE8 really wants to be encased in a wrapper element for the VML to work, and I don't want to disturb getElementsByTagName('div') - open to suggestion on how to do this differently */
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this.vmlBox.runtimeStyle.cssText = 'behavior:none; position:absolute; margin:0; padding:0; border:0; background:none;'; /* super important - if something accidentally matches this (you yourseld did this once, Drew), you'll get infinitely-created elements and a frozen browser! */
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this.vmlBox.style.zIndex = thisStyle.zIndex;
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this.vml = {'color':true, 'image':true, 'stroke':true};
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for (var v in this.vml) {
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this.vml[v] = document.createElement(lib.ns + ':shape');
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this.vml[v].filler = document.createElement(lib.ns + ':fill');
|
|
this.vml[v].appendChild(this.vml[v].filler);
|
|
this.vml[v].stroked = false;
|
|
this.vml[v].style.position = 'absolute';
|
|
this.vml[v].style.zIndex = thisStyle.zIndex;
|
|
this.vml[v].coordorigin = '1,1';
|
|
this.vmlBox.appendChild(this.vml[v]);
|
|
}
|
|
this.vml.image.fillcolor = 'none';
|
|
this.vml.image.filler.type = 'tile';
|
|
this.parentNode.insertBefore(this.vmlBox, this);
|
|
|
|
this.isImg = false;
|
|
if (this.nodeName == 'IMG') {
|
|
this.isImg = true;
|
|
this.style.visibility = 'hidden';
|
|
}
|
|
|
|
setTimeout(function() {
|
|
lib.applyVML(self);
|
|
}, 1);
|
|
}
|
|
|
|
};
|
|
|
|
try {
|
|
document.execCommand("BackgroundImageCache", false, true);
|
|
} catch(err) {}
|
|
DD_roundies.IEversion();
|
|
DD_roundies.createVmlNameSpace();
|
|
DD_roundies.createVmlStyleSheet();
|
|
|
|
if (DD_roundies.IE8 && document.attachEvent && DD_roundies.querySelector) {
|
|
document.attachEvent('onreadystatechange', function() {
|
|
if (document.readyState == 'complete') {
|
|
var selectors = DD_roundies.selectorsToProcess;
|
|
var length = selectors.length;
|
|
var delayedCall = function(node, radii, index) {
|
|
setTimeout(function() {
|
|
DD_roundies.roundify.call(node, radii);
|
|
}, index*100);
|
|
};
|
|
for (var i=0; i<length; i++) {
|
|
var results = document.querySelectorAll(selectors[i].selector);
|
|
var rLength = results.length;
|
|
for (var r=0; r<rLength; r++) {
|
|
if (results[r].nodeName != 'INPUT') { /* IE8 doesn't like to do this to inputs yet */
|
|
delayedCall(results[r], selectors[i].radii, r);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
});
|
|
} |