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PIE: CSS3 rendering for IE
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Dual-licensed for use under the Apache License Version 2.0 or the General Public License (GPL) Version 2.
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var doc = document;var PIE = window['PIE'];
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PIE = window['PIE'] = {
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* Lookup table of elements which cannot take custom children.
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* Elements that can receive user focus
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* Values of the type attribute for input elements displayed as buttons
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emptyFn: function() {}
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// Force the background cache to be used. No reason it shouldn't be.
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doc.execCommand( 'BackgroundImageCache', false, true );
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* IE version detection approach by James Padolsey, with modifications -- from
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* http://james.padolsey.com/javascript/detect-ie-in-js-using-conditional-comments/
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div = doc.createElement('div'),
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all = div.getElementsByTagName('i'),
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div.innerHTML = '<!--[if gt IE ' + (++ieVersion) + ']><i></i><![endif]-->',
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PIE.ieVersion = ieVersion;
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if( ieVersion === 6 ) {
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// IE6 can't access properties with leading dash, but can without it.
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PIE.CSS_PREFIX = PIE.CSS_PREFIX.replace( /^-/, '' );
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PIE.ieDocMode = doc.documentMode || PIE.ieVersion;
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// Detect VML support (a small number of IE installs don't have a working VML engine)
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div.innerHTML = '<v:shape adj="1"/>';
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shape = div.firstChild;
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shape.style['behavior'] = 'url(#default#VML)';
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PIE.supportsVML = (typeof shape['adj'] === "object");
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* To create a VML element, it must be created by a Document which has the VML
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* namespace set. Unfortunately, if you try to add the namespace programatically
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* into the main document, you will get an "Unspecified error" when trying to
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* access document.namespaces before the document is finished loading. To get
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* around this, we create a DocumentFragment, which in IE land is apparently a
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* full-fledged Document. It allows adding namespaces immediately, so we add the
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* namespace there and then have it create the VML element.
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* @param {string} tag The tag name for the VML element
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* @return {Element} The new VML element
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createVmlElement: function( tag ) {
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var vmlPrefix = 'css3vml';
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if( !vmlCreatorDoc ) {
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vmlCreatorDoc = doc.createDocumentFragment();
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vmlCreatorDoc.namespaces.add( vmlPrefix, 'urn:schemas-microsoft-com:vml' );
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return vmlCreatorDoc.createElement( vmlPrefix + ':' + tag );
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* Generate and return a unique ID for a given object. The generated ID is stored
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* as a property of the object for future reuse.
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* @param {Object} obj
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getUID: function( obj ) {
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return obj && obj[ '_pieId' ] || ( obj[ '_pieId' ] = '_' + ++idNum );
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* Simple utility for merging objects
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* @param {Object} obj1 The main object into which all others will be merged
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* @param {...Object} var_args Other objects which will be merged into the first, in order
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merge: function( obj1 ) {
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var i, len, p, objN, args = arguments;
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for( i = 1, len = args.length; i < len; i++ ) {
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if( objN.hasOwnProperty( p ) ) {
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obj1[ p ] = objN[ p ];
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* Execute a callback function, passing it the dimensions of a given image once
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* @param {string} src The source URL of the image
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* @param {function({w:number, h:number})} func The callback function to be called once the image dimensions are known
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* @param {Object} ctx A context object which will be used as the 'this' value within the executed callback function
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withImageSize: function( src, func, ctx ) {
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var size = imageSizes[ src ], img, queue;
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// If we have a queue, add to it
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if( Object.prototype.toString.call( size ) === '[object Array]' ) {
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size.push( [ func, ctx ] );
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// Already have the size cached, call func right away
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func.call( ctx, size );
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queue = imageSizes[ src ] = [ [ func, ctx ] ]; //create queue
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img.onload = function() {
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size = imageSizes[ src ] = { w: img.width, h: img.height };
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for( var i = 0, len = queue.length; i < len; i++ ) {
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queue[ i ][ 0 ].call( queue[ i ][ 1 ], size );
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* Utility functions for handling gradients
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getGradientMetrics: function( el, width, height, gradientInfo ) {
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var angle = gradientInfo.angle,
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startPos = gradientInfo.gradientStart,
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startCornerX, startCornerY,
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endCornerX, endCornerY,
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// Find the "start" and "end" corners; these are the corners furthest along the gradient line.
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// This is used below to find the start/end positions of the CSS3 gradient-line, and also in finding
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// the total length of the VML rendered gradient-line corner to corner.
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function findCorners() {
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startCornerX = ( angle >= 90 && angle < 270 ) ? width : 0;
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startCornerY = angle < 180 ? height : 0;
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endCornerX = width - startCornerX;
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endCornerY = height - startCornerY;
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// Normalize the angle to a value between [0, 360)
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function normalizeAngle() {
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// Find the start and end points of the gradient
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startPos = startPos.coords( el, width, height );
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angle = angle.degrees();
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// If no start position was specified, then choose a corner as the starting point.
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startX = startCornerX;
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startY = startCornerY;
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// Find the end position by extending a perpendicular line from the gradient-line which
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// intersects the corner opposite from the starting corner.
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p = PIE.GradientUtil.perpendicularIntersect( startX, startY, angle, endCornerX, endCornerY );
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else if( startPos ) {
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// Start position but no angle specified: find the end point by rotating 180deg around the center
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endX = width - startX;
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endY = height - startY;
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// Neither position nor angle specified; create vertical gradient from top to bottom
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startX = startY = endX = 0;
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deltaX = endX - startX;
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deltaY = endY - startY;
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if( angle === UNDEF ) {
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// Get the angle based on the change in x/y from start to end point. Checks first for horizontal
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// or vertical angles so they get exact whole numbers rather than what atan2 gives.
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angle = ( !deltaX ? ( deltaY < 0 ? 90 : 270 ) :
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( !deltaY ? ( deltaX < 0 ? 180 : 0 ) :
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-Math.atan2( deltaY, deltaX ) / Math.PI * 180
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startCornerX: startCornerX,
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startCornerY: startCornerY,
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endCornerX: endCornerX,
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endCornerY: endCornerY,
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lineLength: PIE.GradientUtil.distance( startX, startY, endX, endY )
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* Find the point along a given line (defined by a starting point and an angle), at which
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* that line is intersected by a perpendicular line extending through another point.
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* @param x1 - x coord of the starting point
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* @param y1 - y coord of the starting point
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* @param angle - angle of the line extending from the starting point (in degrees)
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* @param x2 - x coord of point along the perpendicular line
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* @param y2 - y coord of point along the perpendicular line
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perpendicularIntersect: function( x1, y1, angle, x2, y2 ) {
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// Handle straight vertical and horizontal angles, for performance and to avoid
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// divide-by-zero errors.
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if( angle === 0 || angle === 180 ) {
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else if( angle === 90 || angle === 270 ) {
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// General approach: determine the Ax+By=C formula for each line (the slope of the second
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// line is the negative inverse of the first) and then solve for where both formulas have
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// the same x/y values.
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var a1 = Math.tan( -angle * Math.PI / 180 ),
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endX = ( c2 - c1 ) / d,
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endY = ( a1 * c2 - a2 * c1 ) / d;
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return [ endX, endY ];
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* Find the distance between two points
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* @param {Number} p1x
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* @param {Number} p1y
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* @param {Number} p2x
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* @param {Number} p2y
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* @return {Number} the distance
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distance: function( p1x, p1y, p2x, p2y ) {
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Math.sqrt( dx * dx + dy * dy )
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PIE.Observable = function() {
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* List of registered observer functions
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* Hash of function ids to their position in the observers list, for fast lookup
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PIE.Observable.prototype = {
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observe: function( fn ) {
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var id = PIE.Util.getUID( fn ),
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indexes = this.indexes,
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observers = this.observers;
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if( !( id in indexes ) ) {
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indexes[ id ] = observers.length;
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observers.push( fn );
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unobserve: function( fn ) {
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var id = PIE.Util.getUID( fn ),
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indexes = this.indexes;
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if( id && id in indexes ) {
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delete this.observers[ indexes[ id ] ];
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delete indexes[ id ];
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var o = this.observers,
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* Simple heartbeat timer - this is a brute-force workaround for syncing issues caused by IE not
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* always firing the onmove and onresize events when elements are moved or resized. We check a few
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* times every second to make sure the elements have the correct position and size. See Element.js
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* which adds heartbeat listeners based on the custom -pie-poll flag, which defaults to true in IE8
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* and false elsewhere.
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PIE.Heartbeat = new PIE.Observable();
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PIE.Heartbeat.run = function() {
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setInterval( function() { me.fire() }, 250 );
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* Create an observable listener for the onunload event
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PIE.OnUnload = new PIE.Observable();
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function handleUnload() {
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window.detachEvent( 'onunload', handleUnload );
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window[ 'PIE' ] = null;
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window.attachEvent( 'onunload', handleUnload );
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* Attach an event which automatically gets detached onunload
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PIE.OnUnload.attachManagedEvent = function( target, name, handler ) {
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target.attachEvent( name, handler );
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this.observe( function() {
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target.detachEvent( name, handler );
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* Create a single observable listener for window resize events.
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PIE.OnResize = new PIE.Observable();
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PIE.OnUnload.attachManagedEvent( window, 'onresize', function() { PIE.OnResize.fire(); } );
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* Create a single observable listener for scroll events. Used for lazy loading based
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* on the viewport, and for fixed position backgrounds.
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PIE.OnScroll = new PIE.Observable();
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function scrolled() {
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PIE.OnUnload.attachManagedEvent( window, 'onscroll', scrolled );
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PIE.OnResize.observe( scrolled );
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* Listen for printing events, destroy all active PIE instances when printing, and
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* restore them afterward.
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function beforePrint() {
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elements = PIE.Element.destroyAll();
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function afterPrint() {
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for( var i = 0, len = elements.length; i < len; i++ ) {
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PIE[ 'attach' ]( elements[i] );
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PIE.OnUnload.attachManagedEvent( window, 'onbeforeprint', beforePrint );
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PIE.OnUnload.attachManagedEvent( window, 'onafterprint', afterPrint );
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* Create a single observable listener for document mouseup events.
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PIE.OnMouseup = new PIE.Observable();
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PIE.OnUnload.attachManagedEvent( doc, 'onmouseup', function() { PIE.OnMouseup.fire(); } );
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* Wrapper for length and percentage style values. The value is immutable. A singleton instance per unique
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* value is returned from PIE.getLength() - always use that instead of instantiating directly.
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* @param {string} val The CSS string representing the length. It is assumed that this will already have
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* been validated as a valid length or percentage syntax.
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PIE.Length = (function() {
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var lengthCalcEl = doc.createElement( 'length-calc' ),
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parent = doc.documentElement,
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s = lengthCalcEl.style,
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units = [ 'mm', 'cm', 'in', 'pt', 'pc' ],
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s.position = 'absolute';
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s.top = s.left = '-9999px';
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parent.appendChild( lengthCalcEl );
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lengthCalcEl.style.width = '100' + units[i];
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conversions[ units[i] ] = lengthCalcEl.offsetWidth / 100;
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parent.removeChild( lengthCalcEl );
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// All calcs from here on will use 1em
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lengthCalcEl.style.width = '1em';
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function Length( val ) {
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* Regular expression for matching the length unit
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unitRE: /(px|em|ex|mm|cm|in|pt|pc|%)$/,
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* Get the numeric value of the length
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* @return {number} The value
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getNumber: function() {
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if( num === UNDEF ) {
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num = this.num = parseFloat( this.val );
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* Get the unit of the length
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* @return {string} The unit
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getUnit: function() {
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var unit = this.unit,
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m = this.val.match( this.unitRE );
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unit = this.unit = ( m && m[0] ) || 'px';
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* Determine whether this is a percentage length value
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isPercentage: function() {
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return this.getUnit() === '%';
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* Resolve this length into a number of pixels.
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* @param {Element} el - the context element, used to resolve font-relative values
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* @param {(function():number|number)=} pct100 - the number of pixels that equal a 100% percentage. This can be either a number or a
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* function which will be called to return the number.
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pixels: function( el, pct100 ) {
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var num = this.getNumber(),
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unit = this.getUnit();
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return num * ( typeof pct100 === 'function' ? pct100() : pct100 ) / 100;
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return num * this.getEmPixels( el );
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return num * this.getEmPixels( el ) / 2;
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return num * conversions[ unit ];
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* The em and ex units are relative to the font-size of the current element,
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* however if the font-size is set using non-pixel units then we get that value
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* rather than a pixel conversion. To get around this, we keep a floating element
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* with width:1em which we insert into the target element and then read its offsetWidth.
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* For elements that won't accept a child we insert into the parent node and perform
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* additional calculation. If the font-size *is* specified in pixels, then we use that
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* directly to avoid the expensive DOM manipulation.
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* @param {Element} el
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getEmPixels: function( el ) {
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var fs = el.currentStyle.fontSize,
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if( fs.indexOf( 'px' ) > 0 ) {
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return parseFloat( fs );
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else if( el.tagName in PIE.childlessElements ) {
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parent = el.parentNode;
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return PIE.getLength( fs ).pixels( parent, function() {
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return me.getEmPixels( parent );
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el.appendChild( lengthCalcEl );
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px = lengthCalcEl.offsetWidth;
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if( lengthCalcEl.parentNode === el ) { //not sure how this could be false but it sometimes is
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el.removeChild( lengthCalcEl );
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* Retrieve a PIE.Length instance for the given value. A shared singleton instance is returned for each unique value.
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* @param {string} val The CSS string representing the length. It is assumed that this will already have
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* been validated as a valid length or percentage syntax.
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PIE.getLength = function( val ) {
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return instances[ val ] || ( instances[ val ] = new Length( val ) );
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* Wrapper for a CSS3 bg-position value. Takes up to 2 position keywords and 2 lengths/percentages.
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* @param {Array.<PIE.Tokenizer.Token>} tokens The tokens making up the background position value.
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PIE.BgPosition = (function() {
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var length_fifty = PIE.getLength( '50%' ),
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vert_idents = { 'top': 1, 'center': 1, 'bottom': 1 },
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horiz_idents = { 'left': 1, 'center': 1, 'right': 1 };
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function BgPosition( tokens ) {
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this.tokens = tokens;
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BgPosition.prototype = {
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* Normalize the values into the form:
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* [ xOffsetSide, xOffsetLength, yOffsetSide, yOffsetLength ]
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* where: xOffsetSide is either 'left' or 'right',
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* yOffsetSide is either 'top' or 'bottom',
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* and x/yOffsetLength are both PIE.Length objects.
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getValues: function() {
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if( !this._values ) {
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var tokens = this.tokens,
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Tokenizer = PIE.Tokenizer,
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identType = Tokenizer.Type,
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length_zero = PIE.getLength( '0' ),
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type_ident = identType.IDENT,
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type_length = identType.LENGTH,
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type_percent = identType.PERCENT,
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vals = [ 'left', length_zero, 'top', length_zero ];
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// If only one value, the second is assumed to be 'center'
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tokens.push( new Tokenizer.Token( type_ident, 'center' ) );
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// If both idents, they can appear in either order, so switch them if needed
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if( type_ident & ( tokens[0].tokenType | tokens[1].tokenType ) &&
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tokens[0].tokenValue in vert_idents && tokens[1].tokenValue in horiz_idents ) {
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tokens.push( tokens.shift() );
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if( tokens[0].tokenType & type_ident ) {
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if( tokens[0].tokenValue === 'center' ) {
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vals[1] = length_fifty;
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vals[0] = tokens[0].tokenValue;
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else if( tokens[0].isLengthOrPercent() ) {
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vals[1] = PIE.getLength( tokens[0].tokenValue );
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if( tokens[1].tokenType & type_ident ) {
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if( tokens[1].tokenValue === 'center' ) {
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vals[3] = length_fifty;
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vals[2] = tokens[1].tokenValue;
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else if( tokens[1].isLengthOrPercent() ) {
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vals[3] = PIE.getLength( tokens[1].tokenValue );
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// Three or four values - CSS3
699
* Find the coordinates of the background image from the upper-left corner of the background area.
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* Note that these coordinate values are not rounded.
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* @param {Element} el
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* @param {number} width - the width for percentages (background area width minus image width)
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* @param {number} height - the height for percentages (background area height minus image height)
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* @return {Object} { x: Number, y: Number }
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coords: function( el, width, height ) {
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var vals = this.getValues(),
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pxX = vals[1].pixels( el, width ),
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pxY = vals[3].pixels( el, height );
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x: vals[0] === 'right' ? width - pxX : pxX,
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y: vals[2] === 'bottom' ? height - pxY : pxY
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* Wrapper for a CSS3 background-size value.
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* @param {String|PIE.Length} w The width parameter
724
* @param {String|PIE.Length} h The height parameter, if any
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PIE.BgSize = (function() {
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var CONTAIN = 'contain',
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function BgSize( w, h ) {
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pixels: function( el, areaW, areaH, imgW, imgH ) {
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areaRatio = areaW / areaH,
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imgRatio = imgW / imgH;
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if ( w === CONTAIN ) {
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w = imgRatio > areaRatio ? areaW : areaH * imgRatio;
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h = imgRatio > areaRatio ? areaW / imgRatio : areaH;
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else if ( w === COVER ) {
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w = imgRatio < areaRatio ? areaW : areaH * imgRatio;
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h = imgRatio < areaRatio ? areaW / imgRatio : areaH;
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else if ( w === AUTO ) {
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h = ( h === AUTO ? imgH : h.pixels( el, areaH ) );
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w = w.pixels( el, areaW );
760
h = ( h === AUTO ? w / imgRatio : h.pixels( el, areaH ) );
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return { w: w, h: h };
768
BgSize.DEFAULT = new BgSize( AUTO, AUTO );
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* Wrapper for angle values; handles conversion to degrees from all allowed angle units
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* @param {string} val The raw CSS value for the angle. It is assumed it has been pre-validated.
777
PIE.Angle = (function() {
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function Angle( val ) {
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* @return {string} The unit of the angle value
787
getUnit: function() {
788
return this._unit || ( this._unit = this.val.match( this.unitRE )[0].toLowerCase() );
792
* Get the numeric value of the angle in degrees.
793
* @return {number} The degrees value
795
degrees: function() {
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var deg = this._deg, u, n;
797
if( deg === undefined ) {
799
n = parseFloat( this.val, 10 );
800
deg = this._deg = ( u === 'deg' ? n : u === 'rad' ? n / Math.PI * 180 : u === 'grad' ? n / 400 * 360 : u === 'turn' ? n * 360 : 0 );
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* Abstraction for colors values. Allows detection of rgba values. A singleton instance per unique
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* value is returned from PIE.getColor() - always use that instead of instantiating directly.
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* @param {string} val The raw CSS string value for the color
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PIE.Color = (function() {
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function Color( val ) {
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* Regular expression for matching rgba colors and extracting their components
824
Color.rgbaRE = /\s*rgba\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d+|\d*\.\d+)\s*\)\s*/;
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"aliceblue":"F0F8FF", "antiquewhite":"FAEBD7", "aqua":"0FF",
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"aquamarine":"7FFFD4", "azure":"F0FFFF", "beige":"F5F5DC",
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"bisque":"FFE4C4", "black":"000", "blanchedalmond":"FFEBCD",
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"blue":"00F", "blueviolet":"8A2BE2", "brown":"A52A2A",
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"burlywood":"DEB887", "cadetblue":"5F9EA0", "chartreuse":"7FFF00",
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"chocolate":"D2691E", "coral":"FF7F50", "cornflowerblue":"6495ED",
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"cornsilk":"FFF8DC", "crimson":"DC143C", "cyan":"0FF",
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"darkblue":"00008B", "darkcyan":"008B8B", "darkgoldenrod":"B8860B",
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"darkgray":"A9A9A9", "darkgreen":"006400", "darkkhaki":"BDB76B",
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"darkmagenta":"8B008B", "darkolivegreen":"556B2F", "darkorange":"FF8C00",
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"darkorchid":"9932CC", "darkred":"8B0000", "darksalmon":"E9967A",
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"darkseagreen":"8FBC8F", "darkslateblue":"483D8B", "darkslategray":"2F4F4F",
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"darkturquoise":"00CED1", "darkviolet":"9400D3", "deeppink":"FF1493",
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"deepskyblue":"00BFFF", "dimgray":"696969", "dodgerblue":"1E90FF",
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"firebrick":"B22222", "floralwhite":"FFFAF0", "forestgreen":"228B22",
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"fuchsia":"F0F", "gainsboro":"DCDCDC", "ghostwhite":"F8F8FF",
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"gold":"FFD700", "goldenrod":"DAA520", "gray":"808080",
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"green":"008000", "greenyellow":"ADFF2F", "honeydew":"F0FFF0",
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"hotpink":"FF69B4", "indianred":"CD5C5C", "indigo":"4B0082",
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"ivory":"FFFFF0", "khaki":"F0E68C", "lavender":"E6E6FA",
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"lavenderblush":"FFF0F5", "lawngreen":"7CFC00", "lemonchiffon":"FFFACD",
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"lightblue":"ADD8E6", "lightcoral":"F08080", "lightcyan":"E0FFFF",
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"lightgoldenrodyellow":"FAFAD2", "lightgreen":"90EE90", "lightgrey":"D3D3D3",
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"lightpink":"FFB6C1", "lightsalmon":"FFA07A", "lightseagreen":"20B2AA",
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"lightskyblue":"87CEFA", "lightslategray":"789", "lightsteelblue":"B0C4DE",
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"lightyellow":"FFFFE0", "lime":"0F0", "limegreen":"32CD32",
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"linen":"FAF0E6", "magenta":"F0F", "maroon":"800000",
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"mediumauqamarine":"66CDAA", "mediumblue":"0000CD", "mediumorchid":"BA55D3",
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"mediumpurple":"9370D8", "mediumseagreen":"3CB371", "mediumslateblue":"7B68EE",
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"mediumspringgreen":"00FA9A", "mediumturquoise":"48D1CC", "mediumvioletred":"C71585",
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"midnightblue":"191970", "mintcream":"F5FFFA", "mistyrose":"FFE4E1",
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"moccasin":"FFE4B5", "navajowhite":"FFDEAD", "navy":"000080",
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"oldlace":"FDF5E6", "olive":"808000", "olivedrab":"688E23",
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"orange":"FFA500", "orangered":"FF4500", "orchid":"DA70D6",
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"palegoldenrod":"EEE8AA", "palegreen":"98FB98", "paleturquoise":"AFEEEE",
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"palevioletred":"D87093", "papayawhip":"FFEFD5", "peachpuff":"FFDAB9",
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"peru":"CD853F", "pink":"FFC0CB", "plum":"DDA0DD",
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"powderblue":"B0E0E6", "purple":"800080", "red":"F00",
865
"rosybrown":"BC8F8F", "royalblue":"4169E1", "saddlebrown":"8B4513",
866
"salmon":"FA8072", "sandybrown":"F4A460", "seagreen":"2E8B57",
867
"seashell":"FFF5EE", "sienna":"A0522D", "silver":"C0C0C0",
868
"skyblue":"87CEEB", "slateblue":"6A5ACD", "slategray":"708090",
869
"snow":"FFFAFA", "springgreen":"00FF7F", "steelblue":"4682B4",
870
"tan":"D2B48C", "teal":"008080", "thistle":"D8BFD8",
871
"tomato":"FF6347", "turquoise":"40E0D0", "violet":"EE82EE",
872
"wheat":"F5DEB3", "white":"FFF", "whitesmoke":"F5F5F5",
873
"yellow":"FF0", "yellowgreen":"9ACD32"
885
m = v.match( Color.rgbaRE );
887
me._color = 'rgb(' + m[1] + ',' + m[2] + ',' + m[3] + ')';
888
me._alpha = parseFloat( m[4] );
891
if( ( vLower = v.toLowerCase() ) in Color.names ) {
892
v = '#' + Color.names[vLower];
895
me._alpha = ( v === 'transparent' ? 0 : 1 );
901
* Retrieve the value of the color in a format usable by IE natively. This will be the same as
902
* the raw input value, except for rgba values which will be converted to an rgb value.
903
* @param {Element} el The context element, used to get 'currentColor' keyword value.
904
* @return {string} Color value
906
colorValue: function( el ) {
908
return this._color === 'currentColor' ? el.currentStyle.color : this._color;
912
* Retrieve the alpha value of the color. Will be 1 for all values except for rgba values
913
* with an alpha component.
914
* @return {number} The alpha value, from 0 to 1.
924
* Retrieve a PIE.Color instance for the given value. A shared singleton instance is returned for each unique value.
925
* @param {string} val The CSS string representing the color. It is assumed that this will already have
926
* been validated as a valid color syntax.
928
PIE.getColor = function(val) {
929
return instances[ val ] || ( instances[ val ] = new Color( val ) );
934
* A tokenizer for CSS value strings.
936
* @param {string} css The CSS value string
938
PIE.Tokenizer = (function() {
939
function Tokenizer( css ) {
947
* Enumeration of token type constants.
950
var Type = Tokenizer.Type = {
968
* @param {number} type The type of the token - see PIE.Tokenizer.Type
969
* @param {string} value The value of the token
971
Tokenizer.Token = function( type, value ) {
972
this.tokenType = type;
973
this.tokenValue = value;
975
Tokenizer.Token.prototype = {
976
isLength: function() {
977
return this.tokenType & Type.LENGTH || ( this.tokenType & Type.NUMBER && this.tokenValue === '0' );
979
isLengthOrPercent: function() {
980
return this.isLength() || this.tokenType & Type.PERCENT;
984
Tokenizer.prototype = {
986
number: /^[\+\-]?(\d*\.)?\d+/,
987
url: /^url\(\s*("([^"]*)"|'([^']*)'|([!#$%&*-~]*))\s*\)/i,
988
ident: /^\-?[_a-z][\w-]*/i,
989
string: /^("([^"]*)"|'([^']*)')/,
992
hashColor: /^#([\da-f]{6}|[\da-f]{3})/i,
995
'px': Type.LENGTH, 'em': Type.LENGTH, 'ex': Type.LENGTH,
996
'mm': Type.LENGTH, 'cm': Type.LENGTH, 'in': Type.LENGTH,
997
'pt': Type.LENGTH, 'pc': Type.LENGTH,
998
'deg': Type.ANGLE, 'rad': Type.ANGLE, 'grad': Type.ANGLE
1002
'rgb': 1, 'rgba': 1, 'hsl': 1, 'hsla': 1
1007
* Advance to and return the next token in the CSS string. If the end of the CSS string has
1008
* been reached, null will be returned.
1009
* @param {boolean} forget - if true, the token will not be stored for the purposes of backtracking with prev().
1010
* @return {PIE.Tokenizer.Token}
1012
next: function( forget ) {
1013
var css, ch, firstChar, match, val,
1016
function newToken( type, value ) {
1017
var tok = new Tokenizer.Token( type, value );
1019
me.tokens.push( tok );
1024
function failure() {
1029
// In case we previously backed up, return the stored token in the next slot
1030
if( this.tokenIndex < this.tokens.length ) {
1031
return this.tokens[ this.tokenIndex++ ];
1034
// Move past leading whitespace characters
1035
while( this.whitespace.test( this.css.charAt( this.ch ) ) ) {
1038
if( this.ch >= this.css.length ) {
1043
css = this.css.substring( this.ch );
1044
firstChar = css.charAt( 0 );
1045
switch( firstChar ) {
1047
if( match = css.match( this.hashColor ) ) {
1048
this.ch += match[0].length;
1049
return newToken( Type.COLOR, match[0] );
1055
if( match = css.match( this.string ) ) {
1056
this.ch += match[0].length;
1057
return newToken( Type.STRING, match[2] || match[3] || '' );
1064
return newToken( Type.OPERATOR, firstChar );
1067
if( match = css.match( this.url ) ) {
1068
this.ch += match[0].length;
1069
return newToken( Type.URL, match[2] || match[3] || match[4] || '' );
1073
// Numbers and values starting with numbers
1074
if( match = css.match( this.number ) ) {
1076
this.ch += val.length;
1078
// Check if it is followed by a unit
1079
if( css.charAt( val.length ) === '%' ) {
1081
return newToken( Type.PERCENT, val + '%' );
1083
if( match = css.substring( val.length ).match( this.ident ) ) {
1085
this.ch += match[0].length;
1086
return newToken( this.unitTypes[ match[0].toLowerCase() ] || Type.DIMEN, val );
1090
return newToken( Type.NUMBER, val );
1094
if( match = css.match( this.ident ) ) {
1096
this.ch += val.length;
1099
if( val.toLowerCase() in PIE.Color.names || val === 'currentColor' || val === 'transparent' ) {
1100
return newToken( Type.COLOR, val );
1104
if( css.charAt( val.length ) === '(' ) {
1107
// Color values in function format: rgb, rgba, hsl, hsla
1108
if( val.toLowerCase() in this.colorFunctions ) {
1109
function isNum( tok ) {
1110
return tok && tok.tokenType & Type.NUMBER;
1112
function isNumOrPct( tok ) {
1113
return tok && ( tok.tokenType & ( Type.NUMBER | Type.PERCENT ) );
1115
function isValue( tok, val ) {
1116
return tok && tok.tokenValue === val;
1119
return me.next( 1 );
1122
if( ( val.charAt(0) === 'r' ? isNumOrPct( next() ) : isNum( next() ) ) &&
1123
isValue( next(), ',' ) &&
1124
isNumOrPct( next() ) &&
1125
isValue( next(), ',' ) &&
1126
isNumOrPct( next() ) &&
1127
( val === 'rgb' || val === 'hsa' || (
1128
isValue( next(), ',' ) &&
1131
isValue( next(), ')' ) ) {
1132
return newToken( Type.COLOR, this.css.substring( ch, this.ch ) );
1137
return newToken( Type.FUNCTION, val );
1141
return newToken( Type.IDENT, val );
1144
// Standalone character
1146
return newToken( Type.CHARACTER, firstChar );
1150
* Determine whether there is another token
1153
hasNext: function() {
1154
var next = this.next();
1160
* Back up and return the previous token
1161
* @return {PIE.Tokenizer.Token}
1164
return this.tokens[ this.tokenIndex-- - 2 ];
1168
* Retrieve all the tokens in the CSS string
1169
* @return {Array.<PIE.Tokenizer.Token>}
1172
while( this.next() ) {}
1177
* Return a list of tokens from the current position until the given function returns
1178
* true. The final token will not be included in the list.
1179
* @param {function():boolean} func - test function
1180
* @param {boolean} require - if true, then if the end of the CSS string is reached
1181
* before the test function returns true, null will be returned instead of the
1182
* tokens that have been found so far.
1183
* @return {Array.<PIE.Tokenizer.Token>}
1185
until: function( func, require ) {
1186
var list = [], t, hit;
1187
while( t = this.next() ) {
1195
return require && !hit ? null : list;
1201
* Handles calculating, caching, and detecting changes to size and position of the element.
1203
* @param {Element} el the target element
1205
PIE.BoundsInfo = function( el ) {
1206
this.targetElement = el;
1208
PIE.BoundsInfo.prototype = {
1212
positionChanged: function() {
1213
var last = this._lastBounds,
1215
return !last || ( ( bounds = this.getBounds() ) && ( last.x !== bounds.x || last.y !== bounds.y ) );
1218
sizeChanged: function() {
1219
var last = this._lastBounds,
1221
return !last || ( ( bounds = this.getBounds() ) && ( last.w !== bounds.w || last.h !== bounds.h ) );
1224
getLiveBounds: function() {
1225
var el = this.targetElement,
1226
rect = el.getBoundingClientRect(),
1227
isIE9 = PIE.ieDocMode === 9;
1231
// In some cases scrolling the page will cause IE9 to report incorrect dimensions
1232
// in the rect returned by getBoundingClientRect, so we must query offsetWidth/Height instead
1233
w: isIE9 ? el.offsetWidth : rect.right - rect.left,
1234
h: isIE9 ? el.offsetHeight : rect.bottom - rect.top
1238
getBounds: function() {
1239
return this._locked ?
1240
( this._lockedBounds || ( this._lockedBounds = this.getLiveBounds() ) ) :
1241
this.getLiveBounds();
1244
hasBeenQueried: function() {
1245
return !!this._lastBounds;
1252
unlock: function() {
1253
if( !--this._locked ) {
1254
if( this._lockedBounds ) this._lastBounds = this._lockedBounds;
1255
this._lockedBounds = null;
1262
function cacheWhenLocked( fn ) {
1263
var uid = PIE.Util.getUID( fn );
1265
if( this._locked ) {
1266
var cache = this._lockedValues || ( this._lockedValues = {} );
1267
return ( uid in cache ) ? cache[ uid ] : ( cache[ uid ] = fn.call( this ) );
1269
return fn.call( this );
1275
PIE.StyleInfoBase = {
1280
* Create a new StyleInfo class, with the standard constructor, and augmented by
1281
* the StyleInfoBase's members.
1284
newStyleInfo: function( proto ) {
1285
function StyleInfo( el ) {
1286
this.targetElement = el;
1287
this._lastCss = this.getCss();
1289
PIE.Util.merge( StyleInfo.prototype, PIE.StyleInfoBase, proto );
1290
StyleInfo._propsCache = {};
1295
* Get an object representation of the target CSS style, caching it for each unique
1299
getProps: function() {
1300
var css = this.getCss(),
1301
cache = this.constructor._propsCache;
1302
return css ? ( css in cache ? cache[ css ] : ( cache[ css ] = this.parseCss( css ) ) ) : null;
1306
* Get the raw CSS value for the target style
1309
getCss: cacheWhenLocked( function() {
1310
var el = this.targetElement,
1311
ctor = this.constructor,
1313
cs = el.currentStyle,
1314
cssProp = this.cssProperty,
1315
styleProp = this.styleProperty,
1316
prefixedCssProp = ctor._prefixedCssProp || ( ctor._prefixedCssProp = PIE.CSS_PREFIX + cssProp ),
1317
prefixedStyleProp = ctor._prefixedStyleProp || ( ctor._prefixedStyleProp = PIE.STYLE_PREFIX + styleProp.charAt(0).toUpperCase() + styleProp.substring(1) );
1318
return s[ prefixedStyleProp ] || cs.getAttribute( prefixedCssProp ) || s[ styleProp ] || cs.getAttribute( cssProp );
1322
* Determine whether the target CSS style is active.
1325
isActive: cacheWhenLocked( function() {
1326
return !!this.getProps();
1330
* Determine whether the target CSS style has changed since the last time it was used.
1333
changed: cacheWhenLocked( function() {
1334
var currentCss = this.getCss(),
1335
changed = currentCss !== this._lastCss;
1336
this._lastCss = currentCss;
1340
cacheWhenLocked: cacheWhenLocked,
1346
unlock: function() {
1347
if( !--this._locked ) {
1348
delete this._lockedValues;
1354
* Handles parsing, caching, and detecting changes to background (and -pie-background) CSS
1356
* @param {Element} el the target element
1358
PIE.BackgroundStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
1360
cssProperty: PIE.CSS_PREFIX + 'background',
1361
styleProperty: PIE.STYLE_PREFIX + 'Background',
1363
attachIdents: { 'scroll':1, 'fixed':1, 'local':1 },
1364
repeatIdents: { 'repeat-x':1, 'repeat-y':1, 'repeat':1, 'no-repeat':1 },
1365
originAndClipIdents: { 'padding-box':1, 'border-box':1, 'content-box':1 },
1366
positionIdents: { 'top':1, 'right':1, 'bottom':1, 'left':1, 'center':1 },
1367
sizeIdents: { 'contain':1, 'cover':1 },
1369
CLIP: 'backgroundClip',
1370
COLOR: 'backgroundColor',
1371
IMAGE: 'backgroundImage',
1372
ORIGIN: 'backgroundOrigin',
1373
POSITION: 'backgroundPosition',
1374
REPEAT: 'backgroundRepeat',
1375
SIZE: 'backgroundSize'
1379
* For background styles, we support the -pie-background property but fall back to the standard
1380
* backround* properties. The reason we have to use the prefixed version is that IE natively
1381
* parses the standard properties and if it sees something it doesn't know how to parse, for example
1382
* multiple values or gradient definitions, it will throw that away and not make it available through
1385
* Format of return object:
1387
* color: <PIE.Color>,
1391
* imgUrl: 'image.png',
1392
* imgRepeat: <'no-repeat' | 'repeat-x' | 'repeat-y' | 'repeat'>,
1393
* bgPosition: <PIE.BgPosition>,
1394
* bgAttachment: <'scroll' | 'fixed' | 'local'>,
1395
* bgOrigin: <'border-box' | 'padding-box' | 'content-box'>,
1396
* bgClip: <'border-box' | 'padding-box'>,
1397
* bgSize: <PIE.BgSize>,
1398
* origString: 'url(img.png) no-repeat top left'
1401
* imgType: 'linear-gradient',
1402
* gradientStart: <PIE.BgPosition>,
1403
* angle: <PIE.Angle>,
1405
* { color: <PIE.Color>, offset: <PIE.Length> },
1406
* { color: <PIE.Color>, offset: <PIE.Length> }, ...
1411
* @param {String} css
1414
parseCss: function( css ) {
1415
var el = this.targetElement,
1416
cs = el.currentStyle,
1417
tokenizer, token, image,
1418
tok_type = PIE.Tokenizer.Type,
1419
type_operator = tok_type.OPERATOR,
1420
type_ident = tok_type.IDENT,
1421
type_color = tok_type.COLOR,
1424
positionIdents = this.positionIdents,
1425
gradient, stop, width, height,
1426
props = { bgImages: [] };
1428
function isBgPosToken( token ) {
1429
return token && token.isLengthOrPercent() || ( token.tokenType & type_ident && token.tokenValue in positionIdents );
1432
function sizeToken( token ) {
1433
return token && ( ( token.isLengthOrPercent() && PIE.getLength( token.tokenValue ) ) || ( token.tokenValue === 'auto' && 'auto' ) );
1436
// If the CSS3-specific -pie-background property is present, parse it
1437
if( this.getCss3() ) {
1438
tokenizer = new PIE.Tokenizer( css );
1441
while( token = tokenizer.next() ) {
1442
tokType = token.tokenType;
1443
tokVal = token.tokenValue;
1445
if( !image.imgType && tokType & tok_type.FUNCTION && tokVal === 'linear-gradient' ) {
1446
gradient = { stops: [], imgType: tokVal };
1448
while( token = tokenizer.next() ) {
1449
tokType = token.tokenType;
1450
tokVal = token.tokenValue;
1452
// If we reached the end of the function and had at least 2 stops, flush the info
1453
if( tokType & tok_type.CHARACTER && tokVal === ')' ) {
1455
gradient.stops.push( stop );
1457
if( gradient.stops.length > 1 ) {
1458
PIE.Util.merge( image, gradient );
1463
// Color stop - must start with color
1464
if( tokType & type_color ) {
1465
// if we already have an angle/position, make sure that the previous token was a comma
1466
if( gradient.angle || gradient.gradientStart ) {
1467
token = tokenizer.prev();
1468
if( token.tokenType !== type_operator ) {
1475
color: PIE.getColor( tokVal )
1477
// check for offset following color
1478
token = tokenizer.next();
1479
if( token.isLengthOrPercent() ) {
1480
stop.offset = PIE.getLength( token.tokenValue );
1485
// Angle - can only appear in first spot
1486
else if( tokType & tok_type.ANGLE && !gradient.angle && !stop.color && !gradient.stops.length ) {
1487
gradient.angle = new PIE.Angle( token.tokenValue );
1489
else if( isBgPosToken( token ) && !gradient.gradientStart && !stop.color && !gradient.stops.length ) {
1491
gradient.gradientStart = new PIE.BgPosition(
1492
tokenizer.until( function( t ) {
1493
return !isBgPosToken( t );
1497
else if( tokType & type_operator && tokVal === ',' ) {
1499
gradient.stops.push( stop );
1504
// Found something we didn't recognize; fail without adding image
1509
else if( !image.imgType && tokType & tok_type.URL ) {
1510
image.imgUrl = tokVal;
1511
image.imgType = 'image';
1513
else if( isBgPosToken( token ) && !image.bgPosition ) {
1515
image.bgPosition = new PIE.BgPosition(
1516
tokenizer.until( function( t ) {
1517
return !isBgPosToken( t );
1521
else if( tokType & type_ident ) {
1522
if( tokVal in this.repeatIdents && !image.imgRepeat ) {
1523
image.imgRepeat = tokVal;
1525
else if( tokVal in this.originAndClipIdents && !image.bgOrigin ) {
1526
image.bgOrigin = tokVal;
1527
if( ( token = tokenizer.next() ) && ( token.tokenType & type_ident ) &&
1528
token.tokenValue in this.originAndClipIdents ) {
1529
image.bgClip = token.tokenValue;
1531
image.bgClip = tokVal;
1535
else if( tokVal in this.attachIdents && !image.bgAttachment ) {
1536
image.bgAttachment = tokVal;
1542
else if( tokType & type_color && !props.color ) {
1543
props.color = PIE.getColor( tokVal );
1545
else if( tokType & type_operator && tokVal === '/' && !image.bgSize && image.bgPosition ) {
1547
token = tokenizer.next();
1548
if( token.tokenType & type_ident && token.tokenValue in this.sizeIdents ) {
1549
image.bgSize = new PIE.BgSize( token.tokenValue );
1551
else if( width = sizeToken( token ) ) {
1552
height = sizeToken( tokenizer.next() );
1557
image.bgSize = new PIE.BgSize( width, height );
1564
else if( tokType & type_operator && tokVal === ',' && image.imgType ) {
1565
image.origString = css.substring( beginCharIndex, tokenizer.ch - 1 );
1566
beginCharIndex = tokenizer.ch;
1567
props.bgImages.push( image );
1571
// Found something unrecognized; chuck everything
1577
if( image.imgType ) {
1578
image.origString = css.substring( beginCharIndex );
1579
props.bgImages.push( image );
1583
// Otherwise, use the standard background properties; let IE give us the values rather than parsing them
1585
this.withActualBg( PIE.ieDocMode < 9 ?
1587
var propNames = this.propertyNames,
1588
posX = cs[propNames.POSITION + 'X'],
1589
posY = cs[propNames.POSITION + 'Y'],
1590
img = cs[propNames.IMAGE],
1591
color = cs[propNames.COLOR];
1593
if( color !== 'transparent' ) {
1594
props.color = PIE.getColor( color )
1596
if( img !== 'none' ) {
1597
props.bgImages = [ {
1599
imgUrl: new PIE.Tokenizer( img ).next().tokenValue,
1600
imgRepeat: cs[propNames.REPEAT],
1601
bgPosition: new PIE.BgPosition( new PIE.Tokenizer( posX + ' ' + posY ).all() )
1606
var propNames = this.propertyNames,
1607
splitter = /\s*,\s*/,
1608
images = cs[propNames.IMAGE].split( splitter ),
1609
color = cs[propNames.COLOR],
1610
repeats, positions, origins, clips, sizes, i, len, image, sizeParts;
1612
if( color !== 'transparent' ) {
1613
props.color = PIE.getColor( color )
1616
len = images.length;
1617
if( len && images[0] !== 'none' ) {
1618
repeats = cs[propNames.REPEAT].split( splitter );
1619
positions = cs[propNames.POSITION].split( splitter );
1620
origins = cs[propNames.ORIGIN].split( splitter );
1621
clips = cs[propNames.CLIP].split( splitter );
1622
sizes = cs[propNames.SIZE].split( splitter );
1624
props.bgImages = [];
1625
for( i = 0; i < len; i++ ) {
1626
image = images[ i ];
1627
if( image && image !== 'none' ) {
1628
sizeParts = sizes[i].split( ' ' );
1629
props.bgImages.push( {
1630
origString: image + ' ' + repeats[ i ] + ' ' + positions[ i ] + ' / ' + sizes[ i ] + ' ' +
1631
origins[ i ] + ' ' + clips[ i ],
1633
imgUrl: new PIE.Tokenizer( image ).next().tokenValue,
1634
imgRepeat: repeats[ i ],
1635
bgPosition: new PIE.BgPosition( new PIE.Tokenizer( positions[ i ] ).all() ),
1636
bgOrigin: origins[ i ],
1638
bgSize: new PIE.BgSize( sizeParts[ 0 ], sizeParts[ 1 ] )
1647
return ( props.color || props.bgImages[0] ) ? props : null;
1651
* Execute a function with the actual background styles (not overridden with runtimeStyle
1652
* properties set by the renderers) available via currentStyle.
1655
withActualBg: function( fn ) {
1656
var isIE9 = PIE.ieDocMode > 8,
1657
propNames = this.propertyNames,
1658
rs = this.targetElement.runtimeStyle,
1659
rsImage = rs[propNames.IMAGE],
1660
rsColor = rs[propNames.COLOR],
1661
rsRepeat = rs[propNames.REPEAT],
1662
rsClip, rsOrigin, rsSize, rsPosition, ret;
1664
if( rsImage ) rs[propNames.IMAGE] = '';
1665
if( rsColor ) rs[propNames.COLOR] = '';
1666
if( rsRepeat ) rs[propNames.REPEAT] = '';
1668
rsClip = rs[propNames.CLIP];
1669
rsOrigin = rs[propNames.ORIGIN];
1670
rsPosition = rs[propNames.POSITION];
1671
rsSize = rs[propNames.SIZE];
1672
if( rsClip ) rs[propNames.CLIP] = '';
1673
if( rsOrigin ) rs[propNames.ORIGIN] = '';
1674
if( rsPosition ) rs[propNames.POSITION] = '';
1675
if( rsSize ) rs[propNames.SIZE] = '';
1678
ret = fn.call( this );
1680
if( rsImage ) rs[propNames.IMAGE] = rsImage;
1681
if( rsColor ) rs[propNames.COLOR] = rsColor;
1682
if( rsRepeat ) rs[propNames.REPEAT] = rsRepeat;
1684
if( rsClip ) rs[propNames.CLIP] = rsClip;
1685
if( rsOrigin ) rs[propNames.ORIGIN] = rsOrigin;
1686
if( rsPosition ) rs[propNames.POSITION] = rsPosition;
1687
if( rsSize ) rs[propNames.SIZE] = rsSize;
1693
getCss: PIE.StyleInfoBase.cacheWhenLocked( function() {
1694
return this.getCss3() ||
1695
this.withActualBg( function() {
1696
var cs = this.targetElement.currentStyle,
1697
propNames = this.propertyNames;
1698
return cs[propNames.COLOR] + ' ' + cs[propNames.IMAGE] + ' ' + cs[propNames.REPEAT] + ' ' +
1699
cs[propNames.POSITION + 'X'] + ' ' + cs[propNames.POSITION + 'Y'];
1703
getCss3: PIE.StyleInfoBase.cacheWhenLocked( function() {
1704
var el = this.targetElement;
1705
return el.style[ this.styleProperty ] || el.currentStyle.getAttribute( this.cssProperty );
1709
* Tests if style.PiePngFix or the -pie-png-fix property is set to true in IE6.
1711
isPngFix: function() {
1713
if( PIE.ieVersion < 7 ) {
1714
el = this.targetElement;
1715
val = ( '' + ( el.style[ PIE.STYLE_PREFIX + 'PngFix' ] || el.currentStyle.getAttribute( PIE.CSS_PREFIX + 'png-fix' ) ) === 'true' );
1721
* The isActive logic is slightly different, because getProps() always returns an object
1722
* even if it is just falling back to the native background properties. But we only want
1723
* to report is as being "active" if either the -pie-background override property is present
1724
* and parses successfully or '-pie-png-fix' is set to true in IE6.
1726
isActive: PIE.StyleInfoBase.cacheWhenLocked( function() {
1727
return (this.getCss3() || this.isPngFix()) && !!this.getProps();
1731
* Handles parsing, caching, and detecting changes to border CSS
1733
* @param {Element} el the target element
1735
PIE.BorderStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
1737
sides: [ 'Top', 'Right', 'Bottom', 'Left' ],
1744
parseCss: function( css ) {
1753
this.withActualBorder( function() {
1754
var el = this.targetElement,
1755
cs = el.currentStyle,
1757
style, color, width, lastStyle, lastColor, lastWidth, side, ltr;
1758
for( ; i < 4; i++ ) {
1759
side = this.sides[ i ];
1761
ltr = side.charAt(0).toLowerCase();
1762
style = s[ ltr ] = cs[ 'border' + side + 'Style' ];
1763
color = cs[ 'border' + side + 'Color' ];
1764
width = cs[ 'border' + side + 'Width' ];
1767
if( style !== lastStyle ) { stylesSame = false; }
1768
if( color !== lastColor ) { colorsSame = false; }
1769
if( width !== lastWidth ) { widthsSame = false; }
1775
c[ ltr ] = PIE.getColor( color );
1777
width = w[ ltr ] = PIE.getLength( s[ ltr ] === 'none' ? '0' : ( this.namedWidths[ width ] || width ) );
1778
if( width.pixels( this.targetElement ) > 0 ) {
1788
widthsSame: widthsSame,
1789
colorsSame: colorsSame,
1790
stylesSame: stylesSame
1794
getCss: PIE.StyleInfoBase.cacheWhenLocked( function() {
1795
var el = this.targetElement,
1796
cs = el.currentStyle,
1799
// Don't redraw or hide borders for cells in border-collapse:collapse tables
1800
if( !( el.tagName in PIE.tableCellTags && el.offsetParent.currentStyle.borderCollapse === 'collapse' ) ) {
1801
this.withActualBorder( function() {
1802
css = cs.borderWidth + '|' + cs.borderStyle + '|' + cs.borderColor;
1809
* Execute a function with the actual border styles (not overridden with runtimeStyle
1810
* properties set by the renderers) available via currentStyle.
1813
withActualBorder: function( fn ) {
1814
var rs = this.targetElement.runtimeStyle,
1815
rsWidth = rs.borderWidth,
1816
rsColor = rs.borderColor,
1819
if( rsWidth ) rs.borderWidth = '';
1820
if( rsColor ) rs.borderColor = '';
1822
ret = fn.call( this );
1824
if( rsWidth ) rs.borderWidth = rsWidth;
1825
if( rsColor ) rs.borderColor = rsColor;
1832
* Handles parsing, caching, and detecting changes to border-radius CSS
1834
* @param {Element} el the target element
1838
PIE.BorderRadiusStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
1840
cssProperty: 'border-radius',
1841
styleProperty: 'borderRadius',
1843
parseCss: function( css ) {
1845
tokenizer, token, length,
1849
tokenizer = new PIE.Tokenizer( css );
1851
function collectLengths() {
1853
while( ( token = tokenizer.next() ) && token.isLengthOrPercent() ) {
1854
length = PIE.getLength( token.tokenValue );
1855
num = length.getNumber();
1864
return arr.length > 0 && arr.length < 5 ? {
1866
'tr': arr[1] || arr[0],
1867
'br': arr[2] || arr[0],
1868
'bl': arr[3] || arr[1] || arr[0]
1872
// Grab the initial sequence of lengths
1873
if( x = collectLengths() ) {
1874
// See if there is a slash followed by more lengths, for the y-axis radii
1876
if( token.tokenType & PIE.Tokenizer.Type.OPERATOR && token.tokenValue === '/' ) {
1877
y = collectLengths();
1883
// Treat all-zero values the same as no value
1884
if( hasNonZero && x && y ) {
1885
p = { x: x, y : y };
1894
var zero = PIE.getLength( '0' ),
1895
zeros = { 'tl': zero, 'tr': zero, 'br': zero, 'bl': zero };
1896
PIE.BorderRadiusStyleInfo.ALL_ZERO = { x: zeros, y: zeros };
1899
* Handles parsing, caching, and detecting changes to border-image CSS
1901
* @param {Element} el the target element
1903
PIE.BorderImageStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
1905
cssProperty: 'border-image',
1906
styleProperty: 'borderImage',
1908
repeatIdents: { 'stretch':1, 'round':1, 'repeat':1, 'space':1 },
1910
parseCss: function( css ) {
1911
var p = null, tokenizer, token, type, value,
1912
slices, widths, outsets,
1914
Type = PIE.Tokenizer.Type,
1916
NUMBER = Type.NUMBER,
1917
PERCENT = Type.PERCENT;
1920
tokenizer = new PIE.Tokenizer( css );
1923
function isSlash( token ) {
1924
return token && ( token.tokenType & Type.OPERATOR ) && ( token.tokenValue === '/' );
1927
function isFillIdent( token ) {
1928
return token && ( token.tokenType & IDENT ) && ( token.tokenValue === 'fill' );
1931
function collectSlicesEtc() {
1932
slices = tokenizer.until( function( tok ) {
1933
return !( tok.tokenType & ( NUMBER | PERCENT ) );
1936
if( isFillIdent( tokenizer.next() ) && !p.fill ) {
1942
if( isSlash( tokenizer.next() ) ) {
1944
widths = tokenizer.until( function( token ) {
1945
return !token.isLengthOrPercent() && !( ( token.tokenType & IDENT ) && token.tokenValue === 'auto' );
1948
if( isSlash( tokenizer.next() ) ) {
1950
outsets = tokenizer.until( function( token ) {
1951
return !token.isLength();
1959
while( token = tokenizer.next() ) {
1960
type = token.tokenType;
1961
value = token.tokenValue;
1963
// Numbers and/or 'fill' keyword: slice values. May be followed optionally by width values, followed optionally by outset values
1964
if( type & ( NUMBER | PERCENT ) && !slices ) {
1968
else if( isFillIdent( token ) && !p.fill ) {
1973
// Idents: one or values for 'repeat'
1974
else if( ( type & IDENT ) && this.repeatIdents[value] && !p.repeat ) {
1975
p.repeat = { h: value };
1976
if( token = tokenizer.next() ) {
1977
if( ( token.tokenType & IDENT ) && this.repeatIdents[token.tokenValue] ) {
1978
p.repeat.v = token.tokenValue;
1986
else if( ( type & Type.URL ) && !p.src ) {
1990
// Found something unrecognized; exit.
1996
// Validate what we collected
1997
if( !p.src || !slices || slices.length < 1 || slices.length > 4 ||
1998
( widths && widths.length > 4 ) || ( slashCount === 1 && widths.length < 1 ) ||
1999
( outsets && outsets.length > 4 ) || ( slashCount === 2 && outsets.length < 1 ) ) {
2003
// Fill in missing values
2005
p.repeat = { h: 'stretch' };
2008
p.repeat.v = p.repeat.h;
2011
function distributeSides( tokens, convertFn ) {
2013
't': convertFn( tokens[0] ),
2014
'r': convertFn( tokens[1] || tokens[0] ),
2015
'b': convertFn( tokens[2] || tokens[0] ),
2016
'l': convertFn( tokens[3] || tokens[1] || tokens[0] )
2020
p.slice = distributeSides( slices, function( tok ) {
2021
return PIE.getLength( ( tok.tokenType & NUMBER ) ? tok.tokenValue + 'px' : tok.tokenValue );
2024
if( widths && widths[0] ) {
2025
p.widths = distributeSides( widths, function( tok ) {
2026
return tok.isLengthOrPercent() ? PIE.getLength( tok.tokenValue ) : tok.tokenValue;
2030
if( outsets && outsets[0] ) {
2031
p.outset = distributeSides( outsets, function( tok ) {
2032
return tok.isLength() ? PIE.getLength( tok.tokenValue ) : tok.tokenValue;
2041
* Handles parsing, caching, and detecting changes to box-shadow CSS
2043
* @param {Element} el the target element
2045
PIE.BoxShadowStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
2047
cssProperty: 'box-shadow',
2048
styleProperty: 'boxShadow',
2050
parseCss: function( css ) {
2052
getLength = PIE.getLength,
2053
Type = PIE.Tokenizer.Type,
2057
tokenizer = new PIE.Tokenizer( css );
2058
props = { outset: [], inset: [] };
2060
function parseItem() {
2061
var token, type, value, color, lengths, inset, len;
2063
while( token = tokenizer.next() ) {
2064
value = token.tokenValue;
2065
type = token.tokenType;
2067
if( type & Type.OPERATOR && value === ',' ) {
2070
else if( token.isLength() && !lengths ) {
2072
lengths = tokenizer.until( function( token ) {
2073
return !token.isLength();
2076
else if( type & Type.COLOR && !color ) {
2079
else if( type & Type.IDENT && value === 'inset' && !inset ) {
2082
else { //encountered an unrecognized token; fail.
2087
len = lengths && lengths.length;
2088
if( len > 1 && len < 5 ) {
2089
( inset ? props.inset : props.outset ).push( {
2090
xOffset: getLength( lengths[0].tokenValue ),
2091
yOffset: getLength( lengths[1].tokenValue ),
2092
blur: getLength( lengths[2] ? lengths[2].tokenValue : '0' ),
2093
spread: getLength( lengths[3] ? lengths[3].tokenValue : '0' ),
2094
color: PIE.getColor( color || 'currentColor' )
2101
while( parseItem() ) {}
2104
return props && ( props.inset.length || props.outset.length ) ? props : null;
2108
* Retrieves the state of the element's visibility and display
2110
* @param {Element} el the target element
2112
PIE.VisibilityStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
2114
getCss: PIE.StyleInfoBase.cacheWhenLocked( function() {
2115
var cs = this.targetElement.currentStyle;
2116
return cs.visibility + '|' + cs.display;
2119
parseCss: function() {
2120
var el = this.targetElement,
2121
rs = el.runtimeStyle,
2122
cs = el.currentStyle,
2123
rsVis = rs.visibility,
2127
csVis = cs.visibility;
2128
rs.visibility = rsVis;
2131
visible: csVis !== 'hidden',
2132
displayed: cs.display !== 'none'
2137
* Always return false for isActive, since this property alone will not trigger
2138
* a renderer to do anything.
2140
isActive: function() {
2145
PIE.RendererBase = {
2148
* Create a new Renderer class, with the standard constructor, and augmented by
2149
* the RendererBase's members.
2152
newRenderer: function( proto ) {
2153
function Renderer( el, boundsInfo, styleInfos, parent ) {
2154
this.targetElement = el;
2155
this.boundsInfo = boundsInfo;
2156
this.styleInfos = styleInfos;
2157
this.parent = parent;
2159
PIE.Util.merge( Renderer.prototype, PIE.RendererBase, proto );
2164
* Flag indicating the element has already been positioned at least once.
2167
isPositioned: false,
2170
* Determine if the renderer needs to be updated
2173
needsUpdate: function() {
2178
* Run any preparation logic that would affect the main update logic of this
2179
* renderer or any of the other renderers, e.g. things that might affect the
2180
* element's size or style properties.
2182
prepareUpdate: PIE.emptyFn,
2185
* Tell the renderer to update based on modified properties
2187
updateProps: function() {
2189
if( this.isActive() ) {
2195
* Tell the renderer to update based on modified element position
2197
updatePos: function() {
2198
this.isPositioned = true;
2202
* Tell the renderer to update based on modified element dimensions
2204
updateSize: function() {
2205
if( this.isActive() ) {
2214
* Add a layer element, with the given z-order index, to the renderer's main box element. We can't use
2215
* z-index because that breaks when the root rendering box's z-index is 'auto' in IE8+ standards mode.
2216
* So instead we make sure they are inserted into the DOM in the correct order.
2217
* @param {number} index
2218
* @param {Element} el
2220
addLayer: function( index, el ) {
2221
this.removeLayer( index );
2222
for( var layers = this._layers || ( this._layers = [] ), i = index + 1, len = layers.length, layer; i < len; i++ ) {
2229
this.getBox().insertBefore( el, layer || null );
2233
* Retrieve a layer element by its index, or null if not present
2234
* @param {number} index
2237
getLayer: function( index ) {
2238
var layers = this._layers;
2239
return layers && layers[index] || null;
2243
* Remove a layer element by its index
2244
* @param {number} index
2246
removeLayer: function( index ) {
2247
var layer = this.getLayer( index ),
2249
if( layer && box ) {
2250
box.removeChild( layer );
2251
this._layers[index] = null;
2257
* Get a VML shape by name, creating it if necessary.
2258
* @param {string} name A name identifying the element
2259
* @param {string=} subElName If specified a subelement of the shape will be created with this tag name
2260
* @param {Element} parent The parent element for the shape; will be ignored if 'group' is specified
2261
* @param {number=} group If specified, an ordinal group for the shape. 1 or greater. Groups are rendered
2262
* using container elements in the correct order, to get correct z stacking without z-index.
2264
getShape: function( name, subElName, parent, group ) {
2265
var shapes = this._shapes || ( this._shapes = {} ),
2266
shape = shapes[ name ],
2270
shape = shapes[ name ] = PIE.Util.createVmlElement( 'shape' );
2272
shape.appendChild( shape[ subElName ] = PIE.Util.createVmlElement( subElName ) );
2276
parent = this.getLayer( group );
2278
this.addLayer( group, doc.createElement( 'group' + group ) );
2279
parent = this.getLayer( group );
2283
parent.appendChild( shape );
2286
s.position = 'absolute';
2288
s['behavior'] = 'url(#default#VML)';
2294
* Delete a named shape which was created by getShape(). Returns true if a shape with the
2295
* given name was found and deleted, or false if there was no shape of that name.
2296
* @param {string} name
2299
deleteShape: function( name ) {
2300
var shapes = this._shapes,
2301
shape = shapes && shapes[ name ];
2303
shape.parentNode.removeChild( shape );
2304
delete shapes[ name ];
2311
* For a given set of border radius length/percentage values, convert them to concrete pixel
2312
* values based on the current size of the target element.
2313
* @param {Object} radii
2316
getRadiiPixels: function( radii ) {
2317
var el = this.targetElement,
2318
bounds = this.boundsInfo.getBounds(),
2321
tlX, tlY, trX, trY, brX, brY, blX, blY, f;
2323
tlX = radii.x['tl'].pixels( el, w );
2324
tlY = radii.y['tl'].pixels( el, h );
2325
trX = radii.x['tr'].pixels( el, w );
2326
trY = radii.y['tr'].pixels( el, h );
2327
brX = radii.x['br'].pixels( el, w );
2328
brY = radii.y['br'].pixels( el, h );
2329
blX = radii.x['bl'].pixels( el, w );
2330
blY = radii.y['bl'].pixels( el, h );
2332
// If any corner ellipses overlap, reduce them all by the appropriate factor. This formula
2333
// is taken straight from the CSS3 Backgrounds and Borders spec.
2368
* Return the VML path string for the element's background box, with corners rounded.
2369
* @param {Object.<{t:number, r:number, b:number, l:number}>} shrink - if present, specifies number of
2370
* pixels to shrink the box path inward from the element's four sides.
2371
* @param {number=} mult If specified, all coordinates will be multiplied by this number
2372
* @param {Object=} radii If specified, this will be used for the corner radii instead of the properties
2373
* from this renderer's borderRadiusInfo object.
2374
* @return {string} the VML path
2376
getBoxPath: function( shrink, mult, radii ) {
2380
bounds = this.boundsInfo.getBounds(),
2381
w = bounds.w * mult,
2382
h = bounds.h * mult,
2383
radInfo = this.styleInfos.borderRadiusInfo,
2384
floor = Math.floor, ceil = Math.ceil,
2385
shrinkT = shrink ? shrink.t * mult : 0,
2386
shrinkR = shrink ? shrink.r * mult : 0,
2387
shrinkB = shrink ? shrink.b * mult : 0,
2388
shrinkL = shrink ? shrink.l * mult : 0,
2389
tlX, tlY, trX, trY, brX, brY, blX, blY;
2391
if( radii || radInfo.isActive() ) {
2392
r = this.getRadiiPixels( radii || radInfo.getProps() );
2394
tlX = r.x['tl'] * mult;
2395
tlY = r.y['tl'] * mult;
2396
trX = r.x['tr'] * mult;
2397
trY = r.y['tr'] * mult;
2398
brX = r.x['br'] * mult;
2399
brY = r.y['br'] * mult;
2400
blX = r.x['bl'] * mult;
2401
blY = r.y['bl'] * mult;
2403
str = 'm' + floor( shrinkL ) + ',' + floor( tlY ) +
2404
'qy' + floor( tlX ) + ',' + floor( shrinkT ) +
2405
'l' + ceil( w - trX ) + ',' + floor( shrinkT ) +
2406
'qx' + ceil( w - shrinkR ) + ',' + floor( trY ) +
2407
'l' + ceil( w - shrinkR ) + ',' + ceil( h - brY ) +
2408
'qy' + ceil( w - brX ) + ',' + ceil( h - shrinkB ) +
2409
'l' + floor( blX ) + ',' + ceil( h - shrinkB ) +
2410
'qx' + floor( shrinkL ) + ',' + ceil( h - blY ) + ' x e';
2412
// simplified path for non-rounded box
2413
str = 'm' + floor( shrinkL ) + ',' + floor( shrinkT ) +
2414
'l' + ceil( w - shrinkR ) + ',' + floor( shrinkT ) +
2415
'l' + ceil( w - shrinkR ) + ',' + ceil( h - shrinkB ) +
2416
'l' + floor( shrinkL ) + ',' + ceil( h - shrinkB ) +
2424
* Get the container element for the shapes, creating it if necessary.
2426
getBox: function() {
2427
var box = this.parent.getLayer( this.boxZIndex ), s;
2430
box = doc.createElement( this.boxName );
2432
s.position = 'absolute';
2434
this.parent.addLayer( this.boxZIndex, box );
2442
* Hide the actual border of the element. In IE7 and up we can just set its color to transparent;
2443
* however IE6 does not support transparent borders so we have to get tricky with it. Also, some elements
2444
* like form buttons require removing the border width altogether, so for those we increase the padding
2445
* by the border size.
2447
hideBorder: function() {
2448
var el = this.targetElement,
2449
cs = el.currentStyle,
2450
rs = el.runtimeStyle,
2452
isIE6 = PIE.ieVersion === 6,
2455
if( ( isIE6 && ( tag in PIE.childlessElements || tag === 'FIELDSET' ) ) ||
2456
tag === 'BUTTON' || ( tag === 'INPUT' && el.type in PIE.inputButtonTypes ) ) {
2457
rs.borderWidth = '';
2458
sides = this.styleInfos.borderInfo.sides;
2459
for( i = sides.length; i--; ) {
2461
rs[ 'padding' + side ] = '';
2462
rs[ 'padding' + side ] = ( PIE.getLength( cs[ 'padding' + side ] ) ).pixels( el ) +
2463
( PIE.getLength( cs[ 'border' + side + 'Width' ] ) ).pixels( el ) +
2464
( PIE.ieVersion !== 8 && i % 2 ? 1 : 0 ); //needs an extra horizontal pixel to counteract the extra "inner border" going away
2469
// Wrap all the element's children in a custom element, set the element to visiblity:hidden,
2470
// and set the wrapper element to visiblity:visible. This hides the outer element's decorations
2471
// (background and border) but displays all the contents.
2472
// TODO find a better way to do this that doesn't mess up the DOM parent-child relationship,
2473
// as this can interfere with other author scripts which add/modify/delete children. Also, this
2474
// won't work for elements which cannot take children, e.g. input/button/textarea/img/etc. Look into
2475
// using a compositor filter or some other filter which masks the border.
2476
if( el.childNodes.length !== 1 || el.firstChild.tagName !== 'ie6-mask' ) {
2477
var cont = doc.createElement( 'ie6-mask' ),
2478
s = cont.style, child;
2479
s.visibility = 'visible';
2481
while( child = el.firstChild ) {
2482
cont.appendChild( child );
2484
el.appendChild( cont );
2485
rs.visibility = 'hidden';
2489
rs.borderColor = 'transparent';
2493
unhideBorder: function() {
2499
* Destroy the rendered objects. This is a base implementation which handles common renderer
2500
* structures, but individual renderers may override as necessary.
2502
destroy: function() {
2503
this.parent.removeLayer( this.boxZIndex );
2504
delete this._shapes;
2505
delete this._layers;
2509
* Root renderer; creates the outermost container element and handles keeping it aligned
2510
* with the target element's size and position.
2511
* @param {Element} el The target element
2512
* @param {Object} styleInfos The StyleInfo objects
2514
PIE.RootRenderer = PIE.RendererBase.newRenderer( {
2516
isActive: function() {
2517
var children = this.childRenderers;
2518
for( var i in children ) {
2519
if( children.hasOwnProperty( i ) && children[ i ].isActive() ) {
2526
needsUpdate: function() {
2527
return this.styleInfos.visibilityInfo.changed();
2530
updatePos: function() {
2531
if( this.isActive() ) {
2532
var el = this.getPositioningElement(),
2536
tgtCS = el.currentStyle,
2537
tgtPos = tgtCS.position,
2539
s = this.getBox().style, cs,
2541
elBounds = this.boundsInfo.getBounds();
2543
if( tgtPos === 'fixed' && PIE.ieVersion > 6 ) {
2548
// Get the element's offsets from its nearest positioned ancestor. Uses
2549
// getBoundingClientRect for accuracy and speed.
2551
par = par.offsetParent;
2552
} while( par && ( par.currentStyle.position === 'static' ) );
2554
parRect = par.getBoundingClientRect();
2555
cs = par.currentStyle;
2556
x = elBounds.x - parRect.left - ( parseFloat(cs.borderLeftWidth) || 0 );
2557
y = elBounds.y - parRect.top - ( parseFloat(cs.borderTopWidth) || 0 );
2559
docEl = doc.documentElement;
2560
x = elBounds.x + docEl.scrollLeft - docEl.clientLeft;
2561
y = elBounds.y + docEl.scrollTop - docEl.clientTop;
2563
boxPos = 'absolute';
2566
s.position = boxPos;
2569
s.zIndex = tgtPos === 'static' ? -1 : tgtCS.zIndex;
2570
this.isPositioned = true;
2574
updateSize: PIE.emptyFn,
2576
updateVisibility: function() {
2577
var vis = this.styleInfos.visibilityInfo.getProps();
2578
this.getBox().style.display = ( vis.visible && vis.displayed ) ? '' : 'none';
2581
updateProps: function() {
2582
if( this.isActive() ) {
2583
this.updateVisibility();
2589
getPositioningElement: function() {
2590
var el = this.targetElement;
2591
return el.tagName in PIE.tableCellTags ? el.offsetParent : el;
2594
getBox: function() {
2595
var box = this._box, el;
2597
el = this.getPositioningElement();
2598
box = this._box = doc.createElement( 'css3-container' );
2599
box.style['direction'] = 'ltr'; //fix positioning bug in rtl environments
2601
this.updateVisibility();
2603
el.parentNode.insertBefore( box, el );
2608
finishUpdate: PIE.emptyFn,
2610
destroy: function() {
2611
var box = this._box, par;
2612
if( box && ( par = box.parentNode ) ) {
2613
par.removeChild( box );
2616
delete this._layers;
2621
* Renderer for element backgrounds.
2623
* @param {Element} el The target element
2624
* @param {Object} styleInfos The StyleInfo objects
2625
* @param {PIE.RootRenderer} parent
2627
PIE.BackgroundRenderer = PIE.RendererBase.newRenderer( {
2630
boxName: 'background',
2632
needsUpdate: function() {
2633
var si = this.styleInfos;
2634
return si.backgroundInfo.changed() || si.borderRadiusInfo.changed();
2637
isActive: function() {
2638
var si = this.styleInfos;
2639
return si.borderImageInfo.isActive() ||
2640
si.borderRadiusInfo.isActive() ||
2641
si.backgroundInfo.isActive() ||
2642
( si.boxShadowInfo.isActive() && si.boxShadowInfo.getProps().inset );
2649
var bounds = this.boundsInfo.getBounds();
2650
if( bounds.w && bounds.h ) {
2652
this.drawBgImages();
2657
* Draw the background color shape
2659
drawBgColor: function() {
2660
var props = this.styleInfos.backgroundInfo.getProps(),
2661
bounds = this.boundsInfo.getBounds(),
2662
el = this.targetElement,
2663
color = props && props.color,
2664
shape, w, h, s, alpha;
2666
if( color && color.alpha() > 0 ) {
2667
this.hideBackground();
2669
shape = this.getShape( 'bgColor', 'fill', this.getBox(), 1 );
2672
shape.stroked = false;
2673
shape.coordsize = w * 2 + ',' + h * 2;
2674
shape.coordorigin = '1,1';
2675
shape.path = this.getBoxPath( null, 2 );
2679
shape.fill.color = color.colorValue( el );
2681
alpha = color.alpha();
2683
shape.fill.opacity = alpha;
2686
this.deleteShape( 'bgColor' );
2691
* Draw all the background image layers
2693
drawBgImages: function() {
2694
var props = this.styleInfos.backgroundInfo.getProps(),
2695
bounds = this.boundsInfo.getBounds(),
2696
images = props && props.bgImages,
2697
img, shape, w, h, s, i;
2700
this.hideBackground();
2708
shape = this.getShape( 'bgImage' + i, 'fill', this.getBox(), 2 );
2710
shape.stroked = false;
2711
shape.fill.type = 'tile';
2712
shape.fillcolor = 'none';
2713
shape.coordsize = w * 2 + ',' + h * 2;
2714
shape.coordorigin = '1,1';
2715
shape.path = this.getBoxPath( 0, 2 );
2720
if( img.imgType === 'linear-gradient' ) {
2721
this.addLinearGradient( shape, img );
2724
shape.fill.src = img.imgUrl;
2725
this.positionBgImage( shape, i );
2730
// Delete any bgImage shapes previously created which weren't used above
2731
i = images ? images.length : 0;
2732
while( this.deleteShape( 'bgImage' + i++ ) ) {}
2737
* Set the position and clipping of the background image for a layer
2738
* @param {Element} shape
2739
* @param {number} index
2741
positionBgImage: function( shape, index ) {
2743
PIE.Util.withImageSize( shape.fill.src, function( size ) {
2744
var el = me.targetElement,
2745
bounds = me.boundsInfo.getBounds(),
2749
// It's possible that the element dimensions are zero now but weren't when the original
2750
// update executed, make sure that's not the case to avoid divide-by-zero error
2752
var fill = shape.fill,
2754
border = si.borderInfo.getProps(),
2755
bw = border && border.widths,
2756
bwT = bw ? bw['t'].pixels( el ) : 0,
2757
bwR = bw ? bw['r'].pixels( el ) : 0,
2758
bwB = bw ? bw['b'].pixels( el ) : 0,
2759
bwL = bw ? bw['l'].pixels( el ) : 0,
2760
bg = si.backgroundInfo.getProps().bgImages[ index ],
2761
bgPos = bg.bgPosition ? bg.bgPosition.coords( el, elW - size.w - bwL - bwR, elH - size.h - bwT - bwB ) : { x:0, y:0 },
2762
repeat = bg.imgRepeat,
2764
clipT = 0, clipL = 0,
2765
clipR = elW + 1, clipB = elH + 1, //make sure the default clip region is not inside the box (by a subpixel)
2766
clipAdjust = PIE.ieVersion === 8 ? 0 : 1; //prior to IE8 requires 1 extra pixel in the image clip region
2768
// Positioning - find the pixel offset from the top/left and convert to a ratio
2769
// The position is shifted by half a pixel, to adjust for the half-pixel coordorigin shift which is
2770
// needed to fix antialiasing but makes the bg image fuzzy.
2771
pxX = Math.round( bgPos.x ) + bwL + 0.5;
2772
pxY = Math.round( bgPos.y ) + bwT + 0.5;
2773
fill.position = ( pxX / elW ) + ',' + ( pxY / elH );
2775
// Repeating - clip the image shape
2776
if( repeat && repeat !== 'repeat' ) {
2777
if( repeat === 'repeat-x' || repeat === 'no-repeat' ) {
2779
clipB = pxY + size.h + clipAdjust;
2781
if( repeat === 'repeat-y' || repeat === 'no-repeat' ) {
2783
clipR = pxX + size.w + clipAdjust;
2785
shape.style.clip = 'rect(' + clipT + 'px,' + clipR + 'px,' + clipB + 'px,' + clipL + 'px)';
2793
* Draw the linear gradient for a gradient layer
2794
* @param {Element} shape
2795
* @param {Object} info The object holding the information about the gradient
2797
addLinearGradient: function( shape, info ) {
2798
var el = this.targetElement,
2799
bounds = this.boundsInfo.getBounds(),
2804
stopCount = stops.length,
2806
GradientUtil = PIE.GradientUtil,
2807
perpendicularIntersect = GradientUtil.perpendicularIntersect,
2808
distance = GradientUtil.distance,
2809
metrics = GradientUtil.getGradientMetrics( el, w, h, info ),
2810
angle = metrics.angle,
2811
startX = metrics.startX,
2812
startY = metrics.startY,
2813
startCornerX = metrics.startCornerX,
2814
startCornerY = metrics.startCornerY,
2815
endCornerX = metrics.endCornerX,
2816
endCornerY = metrics.endCornerY,
2817
deltaX = metrics.deltaX,
2818
deltaY = metrics.deltaY,
2819
lineLength = metrics.lineLength,
2820
vmlAngle, vmlGradientLength, vmlColors,
2821
stopPx, vmlOffsetPct,
2822
p, i, j, before, after;
2824
// In VML land, the angle of the rendered gradient depends on the aspect ratio of the shape's
2825
// bounding box; for example specifying a 45 deg angle actually results in a gradient
2826
// drawn diagonally from one corner to its opposite corner, which will only appear to the
2827
// viewer as 45 degrees if the shape is equilateral. We adjust for this by taking the x/y deltas
2828
// between the start and end points, multiply one of them by the shape's aspect ratio,
2829
// and get their arctangent, resulting in an appropriate VML angle. If the angle is perfectly
2830
// horizontal or vertical then we don't need to do this conversion.
2831
vmlAngle = ( angle % 90 ) ? Math.atan2( deltaX * w / h, deltaY ) / PI * 180 : ( angle + 90 );
2833
// VML angles are 180 degrees offset from CSS angles
2835
vmlAngle = vmlAngle % 360;
2837
// Add all the stops to the VML 'colors' list, including the first and last stops.
2838
// For each, we find its pixel offset along the gradient-line; if the offset of a stop is less
2839
// than that of its predecessor we increase it to be equal. We then map that pixel offset to a
2840
// percentage along the VML gradient-line, which runs from shape corner to corner.
2841
p = perpendicularIntersect( startCornerX, startCornerY, angle, endCornerX, endCornerY );
2842
vmlGradientLength = distance( startCornerX, startCornerY, p[0], p[1] );
2844
p = perpendicularIntersect( startX, startY, angle, startCornerX, startCornerY );
2845
vmlOffsetPct = distance( startX, startY, p[0], p[1] ) / vmlGradientLength * 100;
2847
// Find the pixel offsets along the CSS3 gradient-line for each stop.
2849
for( i = 0; i < stopCount; i++ ) {
2850
stopPx.push( stops[i].offset ? stops[i].offset.pixels( el, lineLength ) :
2851
i === 0 ? 0 : i === stopCount - 1 ? lineLength : null );
2853
// Fill in gaps with evenly-spaced offsets
2854
for( i = 1; i < stopCount; i++ ) {
2855
if( stopPx[ i ] === null ) {
2856
before = stopPx[ i - 1 ];
2859
after = stopPx[ ++j ];
2860
} while( after === null );
2861
stopPx[ i ] = before + ( after - before ) / ( j - i + 1 );
2863
// Make sure each stop's offset is no less than the one before it
2864
stopPx[ i ] = Math.max( stopPx[ i ], stopPx[ i - 1 ] );
2867
// Convert to percentage along the VML gradient line and add to the VML 'colors' value
2868
for( i = 0; i < stopCount; i++ ) {
2870
( vmlOffsetPct + ( stopPx[ i ] / vmlGradientLength * 100 ) ) + '% ' + stops[i].color.colorValue( el )
2874
// Now, finally, we're ready to render the gradient fill. Set the start and end colors to
2875
// the first and last stop colors; this just sets outer bounds for the gradient.
2876
fill['angle'] = vmlAngle;
2877
fill['type'] = 'gradient';
2878
fill['method'] = 'sigma';
2879
fill['color'] = stops[0].color.colorValue( el );
2880
fill['color2'] = stops[stopCount - 1].color.colorValue( el );
2881
if( fill['colors'] ) { //sometimes the colors object isn't initialized so we have to assign it directly (?)
2882
fill['colors'].value = vmlColors.join( ',' );
2884
fill['colors'] = vmlColors.join( ',' );
2890
* Hide the actual background image and color of the element.
2892
hideBackground: function() {
2893
var rs = this.targetElement.runtimeStyle;
2894
rs.backgroundImage = 'url(about:blank)'; //ensures the background area reacts to mouse events
2895
rs.backgroundColor = 'transparent';
2898
destroy: function() {
2899
PIE.RendererBase.destroy.call( this );
2900
var rs = this.targetElement.runtimeStyle;
2901
rs.backgroundImage = rs.backgroundColor = '';
2906
* Renderer for element borders.
2908
* @param {Element} el The target element
2909
* @param {Object} styleInfos The StyleInfo objects
2910
* @param {PIE.RootRenderer} parent
2912
PIE.BorderRenderer = PIE.RendererBase.newRenderer( {
2917
needsUpdate: function() {
2918
var si = this.styleInfos;
2919
return si.borderInfo.changed() || si.borderRadiusInfo.changed();
2922
isActive: function() {
2923
var si = this.styleInfos;
2924
return ( si.borderRadiusInfo.isActive() ||
2925
si.backgroundInfo.isActive() ) &&
2926
!si.borderImageInfo.isActive() &&
2927
si.borderInfo.isActive(); //check BorderStyleInfo last because it's the most expensive
2931
* Draw the border shape(s)
2934
var el = this.targetElement,
2935
props = this.styleInfos.borderInfo.getProps(),
2936
bounds = this.boundsInfo.getBounds(),
2940
segments, seg, i, len;
2945
segments = this.getBorderSegments( 2 );
2946
for( i = 0, len = segments.length; i < len; i++) {
2948
shape = this.getShape( 'borderPiece' + i, seg.stroke ? 'stroke' : 'fill', this.getBox() );
2949
shape.coordsize = w * 2 + ',' + h * 2;
2950
shape.coordorigin = '1,1';
2951
shape.path = seg.path;
2956
shape.filled = !!seg.fill;
2957
shape.stroked = !!seg.stroke;
2959
stroke = shape.stroke;
2960
stroke['weight'] = seg.weight + 'px';
2961
stroke.color = seg.color.colorValue( el );
2962
stroke['dashstyle'] = seg.stroke === 'dashed' ? '2 2' : seg.stroke === 'dotted' ? '1 1' : 'solid';
2963
stroke['linestyle'] = seg.stroke === 'double' && seg.weight > 2 ? 'ThinThin' : 'Single';
2965
shape.fill.color = seg.fill.colorValue( el );
2969
// remove any previously-created border shapes which didn't get used above
2970
while( this.deleteShape( 'borderPiece' + i++ ) ) {}
2976
* Get the VML path definitions for the border segment(s).
2977
* @param {number=} mult If specified, all coordinates will be multiplied by this number
2978
* @return {Array.<string>}
2980
getBorderSegments: function( mult ) {
2981
var el = this.targetElement,
2983
borderInfo = this.styleInfos.borderInfo,
2985
floor, ceil, wT, wR, wB, wL,
2987
borderProps, radiusInfo, radii, widths, styles, colors;
2989
if( borderInfo.isActive() ) {
2990
borderProps = borderInfo.getProps();
2992
widths = borderProps.widths;
2993
styles = borderProps.styles;
2994
colors = borderProps.colors;
2996
if( borderProps.widthsSame && borderProps.stylesSame && borderProps.colorsSame ) {
2997
if( colors['t'].alpha() > 0 ) {
2998
// shortcut for identical border on all sides - only need 1 stroked shape
2999
wT = widths['t'].pixels( el ); //thickness
3000
wR = wT / 2; //shrink
3002
path: this.getBoxPath( { t: wR, r: wR, b: wR, l: wR }, mult ),
3003
stroke: styles['t'],
3011
bounds = this.boundsInfo.getBounds();
3015
wT = round( widths['t'].pixels( el ) );
3016
wR = round( widths['r'].pixels( el ) );
3017
wB = round( widths['b'].pixels( el ) );
3018
wL = round( widths['l'].pixels( el ) );
3026
radiusInfo = this.styleInfos.borderRadiusInfo;
3027
if( radiusInfo.isActive() ) {
3028
radii = this.getRadiiPixels( radiusInfo.getProps() );
3034
function radius( xy, corner ) {
3035
return radii ? radii[ xy ][ corner ] : 0;
3038
function curve( corner, shrinkX, shrinkY, startAngle, ccw, doMove ) {
3039
var rx = radius( 'x', corner),
3040
ry = radius( 'y', corner),
3042
isRight = corner.charAt( 1 ) === 'r',
3043
isBottom = corner.charAt( 0 ) === 'b';
3044
return ( rx > 0 && ry > 0 ) ?
3045
( doMove ? 'al' : 'ae' ) +
3046
( isRight ? ceil( elW - rx ) : floor( rx ) ) * mult + ',' + // center x
3047
( isBottom ? ceil( elH - ry ) : floor( ry ) ) * mult + ',' + // center y
3048
( floor( rx ) - shrinkX ) * mult + ',' + // width
3049
( floor( ry ) - shrinkY ) * mult + ',' + // height
3050
( startAngle * deg ) + ',' + // start angle
3051
( 45 * deg * ( ccw ? 1 : -1 ) // angle change
3053
( doMove ? 'm' : 'l' ) +
3054
( isRight ? elW - shrinkX : shrinkX ) * mult + ',' +
3055
( isBottom ? elH - shrinkY : shrinkY ) * mult
3059
function line( side, shrink, ccw, doMove ) {
3063
floor( radius( 'x', 'tl') ) * mult + ',' + ceil( shrink ) * mult :
3065
ceil( elW - shrink ) * mult + ',' + floor( radius( 'y', 'tr') ) * mult :
3067
ceil( elW - radius( 'x', 'br') ) * mult + ',' + floor( elH - shrink ) * mult :
3069
floor( shrink ) * mult + ',' + ceil( elH - radius( 'y', 'bl') ) * mult
3073
ceil( elW - radius( 'x', 'tr') ) * mult + ',' + ceil( shrink ) * mult :
3075
ceil( elW - shrink ) * mult + ',' + ceil( elH - radius( 'y', 'br') ) * mult :
3077
floor( radius( 'x', 'bl') ) * mult + ',' + floor( elH - shrink ) * mult :
3079
floor( shrink ) * mult + ',' + floor( radius( 'y', 'tl') ) * mult
3081
return ccw ? ( doMove ? 'm' + end : '' ) + 'l' + start :
3082
( doMove ? 'm' + start : '' ) + 'l' + end;
3086
function addSide( side, sideBefore, sideAfter, cornerBefore, cornerAfter, baseAngle ) {
3087
var vert = side === 'l' || side === 'r',
3088
sideW = pxWidths[ side ],
3089
beforeX, beforeY, afterX, afterY;
3091
if( sideW > 0 && styles[ side ] !== 'none' && colors[ side ].alpha() > 0 ) {
3092
beforeX = pxWidths[ vert ? side : sideBefore ];
3093
beforeY = pxWidths[ vert ? sideBefore : side ];
3094
afterX = pxWidths[ vert ? side : sideAfter ];
3095
afterY = pxWidths[ vert ? sideAfter : side ];
3097
if( styles[ side ] === 'dashed' || styles[ side ] === 'dotted' ) {
3099
path: curve( cornerBefore, beforeX, beforeY, baseAngle + 45, 0, 1 ) +
3100
curve( cornerBefore, 0, 0, baseAngle, 1, 0 ),
3101
fill: colors[ side ]
3104
path: line( side, sideW / 2, 0, 1 ),
3105
stroke: styles[ side ],
3107
color: colors[ side ]
3110
path: curve( cornerAfter, afterX, afterY, baseAngle, 0, 1 ) +
3111
curve( cornerAfter, 0, 0, baseAngle - 45, 1, 0 ),
3112
fill: colors[ side ]
3117
path: curve( cornerBefore, beforeX, beforeY, baseAngle + 45, 0, 1 ) +
3118
line( side, sideW, 0, 0 ) +
3119
curve( cornerAfter, afterX, afterY, baseAngle, 0, 0 ) +
3121
( styles[ side ] === 'double' && sideW > 2 ?
3122
curve( cornerAfter, afterX - floor( afterX / 3 ), afterY - floor( afterY / 3 ), baseAngle - 45, 1, 0 ) +
3123
line( side, ceil( sideW / 3 * 2 ), 1, 0 ) +
3124
curve( cornerBefore, beforeX - floor( beforeX / 3 ), beforeY - floor( beforeY / 3 ), baseAngle, 1, 0 ) +
3126
curve( cornerBefore, floor( beforeX / 3 ), floor( beforeY / 3 ), baseAngle + 45, 0, 1 ) +
3127
line( side, floor( sideW / 3 ), 1, 0 ) +
3128
curve( cornerAfter, floor( afterX / 3 ), floor( afterY / 3 ), baseAngle, 0, 0 )
3131
curve( cornerAfter, 0, 0, baseAngle - 45, 1, 0 ) +
3132
line( side, 0, 1, 0 ) +
3133
curve( cornerBefore, 0, 0, baseAngle, 1, 0 ),
3134
fill: colors[ side ]
3140
addSide( 't', 'l', 'r', 'tl', 'tr', 90 );
3141
addSide( 'r', 't', 'b', 'tr', 'br', 0 );
3142
addSide( 'b', 'r', 'l', 'br', 'bl', -90 );
3143
addSide( 'l', 'b', 't', 'bl', 'tl', -180 );
3150
destroy: function() {
3152
if (me.finalized || !me.styleInfos.borderImageInfo.isActive()) {
3153
me.targetElement.runtimeStyle.borderColor = '';
3155
PIE.RendererBase.destroy.call( me );
3161
* Renderer for border-image
3163
* @param {Element} el The target element
3164
* @param {Object} styleInfos The StyleInfo objects
3165
* @param {PIE.RootRenderer} parent
3167
PIE.BorderImageRenderer = PIE.RendererBase.newRenderer( {
3170
pieceNames: [ 't', 'tr', 'r', 'br', 'b', 'bl', 'l', 'tl', 'c' ],
3172
needsUpdate: function() {
3173
return this.styleInfos.borderImageInfo.changed();
3176
isActive: function() {
3177
return this.styleInfos.borderImageInfo.isActive();
3181
this.getBox(); //make sure pieces are created
3183
var props = this.styleInfos.borderImageInfo.getProps(),
3184
borderProps = this.styleInfos.borderInfo.getProps(),
3185
bounds = this.boundsInfo.getBounds(),
3186
el = this.targetElement,
3187
pieces = this.pieces;
3189
PIE.Util.withImageSize( props.src, function( imgSize ) {
3192
zero = PIE.getLength( '0' ),
3193
widths = props.widths || ( borderProps ? borderProps.widths : { 't': zero, 'r': zero, 'b': zero, 'l': zero } ),
3194
widthT = widths['t'].pixels( el ),
3195
widthR = widths['r'].pixels( el ),
3196
widthB = widths['b'].pixels( el ),
3197
widthL = widths['l'].pixels( el ),
3198
slices = props.slice,
3199
sliceT = slices['t'].pixels( el ),
3200
sliceR = slices['r'].pixels( el ),
3201
sliceB = slices['b'].pixels( el ),
3202
sliceL = slices['l'].pixels( el );
3204
// Piece positions and sizes
3205
function setSizeAndPos( piece, w, h, x, y ) {
3206
var s = pieces[piece].style,
3208
s.width = max(w, 0);
3209
s.height = max(h, 0);
3213
setSizeAndPos( 'tl', widthL, widthT, 0, 0 );
3214
setSizeAndPos( 't', elW - widthL - widthR, widthT, widthL, 0 );
3215
setSizeAndPos( 'tr', widthR, widthT, elW - widthR, 0 );
3216
setSizeAndPos( 'r', widthR, elH - widthT - widthB, elW - widthR, widthT );
3217
setSizeAndPos( 'br', widthR, widthB, elW - widthR, elH - widthB );
3218
setSizeAndPos( 'b', elW - widthL - widthR, widthB, widthL, elH - widthB );
3219
setSizeAndPos( 'bl', widthL, widthB, 0, elH - widthB );
3220
setSizeAndPos( 'l', widthL, elH - widthT - widthB, 0, widthT );
3221
setSizeAndPos( 'c', elW - widthL - widthR, elH - widthT - widthB, widthL, widthT );
3225
function setCrops( sides, crop, val ) {
3226
for( var i=0, len=sides.length; i < len; i++ ) {
3227
pieces[ sides[i] ]['imagedata'][ crop ] = val;
3232
setCrops( [ 'tl', 't', 'tr' ], 'cropBottom', ( imgSize.h - sliceT ) / imgSize.h );
3233
setCrops( [ 'tl', 'l', 'bl' ], 'cropRight', ( imgSize.w - sliceL ) / imgSize.w );
3234
setCrops( [ 'bl', 'b', 'br' ], 'cropTop', ( imgSize.h - sliceB ) / imgSize.h );
3235
setCrops( [ 'tr', 'r', 'br' ], 'cropLeft', ( imgSize.w - sliceR ) / imgSize.w );
3238
// TODO right now this treats everything like 'stretch', need to support other schemes
3239
//if( props.repeat.v === 'stretch' ) {
3240
setCrops( [ 'l', 'r', 'c' ], 'cropTop', sliceT / imgSize.h );
3241
setCrops( [ 'l', 'r', 'c' ], 'cropBottom', sliceB / imgSize.h );
3243
//if( props.repeat.h === 'stretch' ) {
3244
setCrops( [ 't', 'b', 'c' ], 'cropLeft', sliceL / imgSize.w );
3245
setCrops( [ 't', 'b', 'c' ], 'cropRight', sliceR / imgSize.w );
3249
pieces['c'].style.display = props.fill ? '' : 'none';
3253
getBox: function() {
3254
var box = this.parent.getLayer( this.boxZIndex ),
3256
pieceNames = this.pieceNames,
3257
len = pieceNames.length;
3260
box = doc.createElement( 'border-image' );
3262
s.position = 'absolute';
3266
for( i = 0; i < len; i++ ) {
3267
piece = this.pieces[ pieceNames[i] ] = PIE.Util.createVmlElement( 'rect' );
3268
piece.appendChild( PIE.Util.createVmlElement( 'imagedata' ) );
3270
s['behavior'] = 'url(#default#VML)';
3271
s.position = "absolute";
3273
piece['imagedata'].src = this.styleInfos.borderImageInfo.getProps().src;
3274
piece.stroked = false;
3275
piece.filled = false;
3276
box.appendChild( piece );
3279
this.parent.addLayer( this.boxZIndex, box );
3285
prepareUpdate: function() {
3286
if (this.isActive()) {
3288
el = me.targetElement,
3289
rs = el.runtimeStyle,
3290
widths = me.styleInfos.borderImageInfo.getProps().widths;
3292
// Force border-style to solid so it doesn't collapse
3293
rs.borderStyle = 'solid';
3295
// If widths specified in border-image shorthand, override border-width
3296
// NOTE px units needed here as this gets used by the IE9 renderer too
3298
rs.borderTopWidth = widths['t'].pixels( el ) + 'px';
3299
rs.borderRightWidth = widths['r'].pixels( el ) + 'px';
3300
rs.borderBottomWidth = widths['b'].pixels( el ) + 'px';
3301
rs.borderLeftWidth = widths['l'].pixels( el ) + 'px';
3304
// Make the border transparent
3309
destroy: function() {
3311
rs = me.targetElement.runtimeStyle;
3312
rs.borderStyle = '';
3313
if (me.finalized || !me.styleInfos.borderInfo.isActive()) {
3314
rs.borderColor = rs.borderWidth = '';
3316
PIE.RendererBase.destroy.call( this );
3321
* Renderer for outset box-shadows
3323
* @param {Element} el The target element
3324
* @param {Object} styleInfos The StyleInfo objects
3325
* @param {PIE.RootRenderer} parent
3327
PIE.BoxShadowOutsetRenderer = PIE.RendererBase.newRenderer( {
3330
boxName: 'outset-box-shadow',
3332
needsUpdate: function() {
3333
var si = this.styleInfos;
3334
return si.boxShadowInfo.changed() || si.borderRadiusInfo.changed();
3337
isActive: function() {
3338
var boxShadowInfo = this.styleInfos.boxShadowInfo;
3339
return boxShadowInfo.isActive() && boxShadowInfo.getProps().outset[0];
3344
el = this.targetElement,
3345
box = this.getBox(),
3346
styleInfos = this.styleInfos,
3347
shadowInfos = styleInfos.boxShadowInfo.getProps().outset,
3348
radii = styleInfos.borderRadiusInfo.getProps(),
3349
len = shadowInfos.length,
3351
bounds = this.boundsInfo.getBounds(),
3354
clipAdjust = PIE.ieVersion === 8 ? 1 : 0, //workaround for IE8 bug where VML leaks out top/left of clip region by 1px
3355
corners = [ 'tl', 'tr', 'br', 'bl' ], corner,
3356
shadowInfo, shape, fill, ss, xOff, yOff, spread, blur, shrink, color, alpha, path,
3357
totalW, totalH, focusX, focusY, isBottom, isRight;
3360
function getShadowShape( index, corner, xOff, yOff, color, blur, path ) {
3361
var shape = me.getShape( 'shadow' + index + corner, 'fill', box, len - index ),
3364
// Position and size
3365
shape['coordsize'] = w * 2 + ',' + h * 2;
3366
shape['coordorigin'] = '1,1';
3368
// Color and opacity
3369
shape['stroked'] = false;
3370
shape['filled'] = true;
3371
fill.color = color.colorValue( el );
3373
fill['type'] = 'gradienttitle'; //makes the VML gradient follow the shape's outline - hooray for undocumented features?!?!
3374
fill['color2'] = fill.color;
3375
fill['opacity'] = 0;
3381
// This needs to go last for some reason, to prevent rendering at incorrect size
3393
shadowInfo = shadowInfos[ i ];
3394
xOff = shadowInfo.xOffset.pixels( el );
3395
yOff = shadowInfo.yOffset.pixels( el );
3396
spread = shadowInfo.spread.pixels( el ),
3397
blur = shadowInfo.blur.pixels( el );
3398
color = shadowInfo.color;
3400
shrink = -spread - blur;
3401
if( !radii && blur ) {
3402
// If blurring, use a non-null border radius info object so that getBoxPath will
3403
// round the corners of the expanded shadow shape rather than squaring them off.
3404
radii = PIE.BorderRadiusStyleInfo.ALL_ZERO;
3406
path = this.getBoxPath( { t: shrink, r: shrink, b: shrink, l: shrink }, 2, radii );
3409
totalW = ( spread + blur ) * 2 + w;
3410
totalH = ( spread + blur ) * 2 + h;
3411
focusX = blur * 2 / totalW;
3412
focusY = blur * 2 / totalH;
3413
if( blur - spread > w / 2 || blur - spread > h / 2 ) {
3414
// If the blur is larger than half the element's narrowest dimension, we cannot do
3415
// this with a single shape gradient, because its focussize would have to be less than
3416
// zero which results in ugly artifacts. Instead we create four shapes, each with its
3417
// gradient focus past center, and then clip them so each only shows the quadrant
3418
// opposite the focus.
3419
for( j = 4; j--; ) {
3420
corner = corners[j];
3421
isBottom = corner.charAt( 0 ) === 'b';
3422
isRight = corner.charAt( 1 ) === 'r';
3423
shape = getShadowShape( i, corner, xOff, yOff, color, blur, path );
3425
fill['focusposition'] = ( isRight ? 1 - focusX : focusX ) + ',' +
3426
( isBottom ? 1 - focusY : focusY );
3427
fill['focussize'] = '0,0';
3429
// Clip to show only the appropriate quadrant. Add 1px to the top/left clip values
3430
// in IE8 to prevent a bug where IE8 displays one pixel outside the clip region.
3431
shape.style.clip = 'rect(' + ( ( isBottom ? totalH / 2 : 0 ) + clipAdjust ) + 'px,' +
3432
( isRight ? totalW : totalW / 2 ) + 'px,' +
3433
( isBottom ? totalH : totalH / 2 ) + 'px,' +
3434
( ( isRight ? totalW / 2 : 0 ) + clipAdjust ) + 'px)';
3437
// TODO delete old quadrant shapes if resizing expands past the barrier
3438
shape = getShadowShape( i, '', xOff, yOff, color, blur, path );
3440
fill['focusposition'] = focusX + ',' + focusY;
3441
fill['focussize'] = ( 1 - focusX * 2 ) + ',' + ( 1 - focusY * 2 );
3444
shape = getShadowShape( i, '', xOff, yOff, color, blur, path );
3445
alpha = color.alpha();
3447
// shape.style.filter = 'alpha(opacity=' + ( alpha * 100 ) + ')';
3448
// ss.filter = 'progid:DXImageTransform.Microsoft.BasicImage(opacity=' + ( alpha ) + ')';
3449
shape.fill.opacity = alpha;
3457
* Renderer for re-rendering img elements using VML. Kicks in if the img has
3458
* a border-radius applied, or if the -pie-png-fix flag is set.
3460
* @param {Element} el The target element
3461
* @param {Object} styleInfos The StyleInfo objects
3462
* @param {PIE.RootRenderer} parent
3464
PIE.ImgRenderer = PIE.RendererBase.newRenderer( {
3469
needsUpdate: function() {
3470
var si = this.styleInfos;
3471
return this.targetElement.src !== this._lastSrc || si.borderRadiusInfo.changed();
3474
isActive: function() {
3475
var si = this.styleInfos;
3476
return si.borderRadiusInfo.isActive() || si.backgroundInfo.isPngFix();
3480
this._lastSrc = src;
3481
this.hideActualImg();
3483
var shape = this.getShape( 'img', 'fill', this.getBox() ),
3485
bounds = this.boundsInfo.getBounds(),
3488
borderProps = this.styleInfos.borderInfo.getProps(),
3489
borderWidths = borderProps && borderProps.widths,
3490
el = this.targetElement,
3493
cs = el.currentStyle,
3494
getLength = PIE.getLength,
3497
// In IE6, the BorderRenderer will have hidden the border by moving the border-width to
3498
// the padding; therefore we want to pretend the borders have no width so they aren't doubled
3499
// when adding in the current padding value below.
3500
if( !borderWidths || PIE.ieVersion < 7 ) {
3501
zero = PIE.getLength( '0' );
3502
borderWidths = { 't': zero, 'r': zero, 'b': zero, 'l': zero };
3505
shape.stroked = false;
3506
fill.type = 'frame';
3508
fill.position = (w ? 0.5 / w : 0) + ',' + (h ? 0.5 / h : 0);
3509
shape.coordsize = w * 2 + ',' + h * 2;
3510
shape.coordorigin = '1,1';
3511
shape.path = this.getBoxPath( {
3512
t: round( borderWidths['t'].pixels( el ) + getLength( cs.paddingTop ).pixels( el ) ),
3513
r: round( borderWidths['r'].pixels( el ) + getLength( cs.paddingRight ).pixels( el ) ),
3514
b: round( borderWidths['b'].pixels( el ) + getLength( cs.paddingBottom ).pixels( el ) ),
3515
l: round( borderWidths['l'].pixels( el ) + getLength( cs.paddingLeft ).pixels( el ) )
3522
hideActualImg: function() {
3523
this.targetElement.runtimeStyle.filter = 'alpha(opacity=0)';
3526
destroy: function() {
3527
PIE.RendererBase.destroy.call( this );
3528
this.targetElement.runtimeStyle.filter = '';
3533
* Root renderer for IE9; manages the rendering layers in the element's background
3534
* @param {Element} el The target element
3535
* @param {Object} styleInfos The StyleInfo objects
3537
PIE.IE9RootRenderer = PIE.RendererBase.newRenderer( {
3539
updatePos: PIE.emptyFn,
3540
updateSize: PIE.emptyFn,
3541
updateVisibility: PIE.emptyFn,
3542
updateProps: PIE.emptyFn,
3544
outerCommasRE: /^,+|,+$/g,
3545
innerCommasRE: /,+/g,
3547
setBackgroundLayer: function(zIndex, bg) {
3549
bgLayers = me._bgLayers || ( me._bgLayers = [] ),
3551
bgLayers[zIndex] = bg || undef;
3554
finishUpdate: function() {
3556
bgLayers = me._bgLayers,
3558
if( bgLayers && ( bg = bgLayers.join( ',' ).replace( me.outerCommasRE, '' ).replace( me.innerCommasRE, ',' ) ) !== me._lastBg ) {
3559
me._lastBg = me.targetElement.runtimeStyle.background = bg;
3563
destroy: function() {
3564
this.targetElement.runtimeStyle.background = '';
3565
delete this._bgLayers;
3570
* Renderer for element backgrounds, specific for IE9. Only handles translating CSS3 gradients
3571
* to an equivalent SVG data URI.
3573
* @param {Element} el The target element
3574
* @param {Object} styleInfos The StyleInfo objects
3576
PIE.IE9BackgroundRenderer = PIE.RendererBase.newRenderer( {
3580
needsUpdate: function() {
3581
var si = this.styleInfos;
3582
return si.backgroundInfo.changed();
3585
isActive: function() {
3586
var si = this.styleInfos;
3587
return si.backgroundInfo.isActive() || si.borderImageInfo.isActive();
3592
props = me.styleInfos.backgroundInfo.getProps(),
3593
bg, images, i = 0, img, bgAreaSize, bgSize;
3598
images = props.bgImages;
3600
while( img = images[ i++ ] ) {
3601
if (img.imgType === 'linear-gradient' ) {
3602
bgAreaSize = me.getBgAreaSize( img.bgOrigin );
3603
bgSize = ( img.bgSize || PIE.BgSize.DEFAULT ).pixels(
3604
me.targetElement, bgAreaSize.w, bgAreaSize.h, bgAreaSize.w, bgAreaSize.h
3607
'url(data:image/svg+xml,' + escape( me.getGradientSvg( img, bgSize.w, bgSize.h ) ) + ') ' +
3608
me.bgPositionToString( img.bgPosition ) + ' / ' + bgSize.w + 'px ' + bgSize.h + 'px ' +
3609
( img.bgAttachment || '' ) + ' ' + ( img.bgOrigin || '' ) + ' ' + ( img.bgClip || '' )
3612
bg.push( img.origString );
3617
if ( props.color ) {
3618
bg.push( props.color.val );
3621
me.parent.setBackgroundLayer(me.bgLayerZIndex, bg.join(','));
3625
bgPositionToString: function( bgPosition ) {
3626
return bgPosition ? bgPosition.tokens.map(function(token) {
3627
return token.tokenValue;
3628
}).join(' ') : '0 0';
3631
getBgAreaSize: function( bgOrigin ) {
3633
el = me.targetElement,
3634
bounds = me.boundsInfo.getBounds(),
3639
borders, getLength, cs;
3641
if( bgOrigin !== 'border-box' ) {
3642
borders = me.styleInfos.borderInfo.getProps();
3643
if( borders && ( borders = borders.widths ) ) {
3644
w -= borders[ 'l' ].pixels( el ) + borders[ 'l' ].pixels( el );
3645
h -= borders[ 't' ].pixels( el ) + borders[ 'b' ].pixels( el );
3649
if ( bgOrigin === 'content-box' ) {
3650
getLength = PIE.getLength;
3651
cs = el.currentStyle;
3652
w -= getLength( cs.paddingLeft ).pixels( el ) + getLength( cs.paddingRight ).pixels( el );
3653
h -= getLength( cs.paddingTop ).pixels( el ) + getLength( cs.paddingBottom ).pixels( el );
3656
return { w: w, h: h };
3659
getGradientSvg: function( info, bgWidth, bgHeight ) {
3660
var el = this.targetElement,
3661
stopsInfo = info.stops,
3662
stopCount = stopsInfo.length,
3663
metrics = PIE.GradientUtil.getGradientMetrics( el, bgWidth, bgHeight, info ),
3664
startX = metrics.startX,
3665
startY = metrics.startY,
3666
endX = metrics.endX,
3667
endY = metrics.endY,
3668
lineLength = metrics.lineLength,
3670
i, j, before, after,
3673
// Find the pixel offsets along the CSS3 gradient-line for each stop.
3675
for( i = 0; i < stopCount; i++ ) {
3676
stopPx.push( stopsInfo[i].offset ? stopsInfo[i].offset.pixels( el, lineLength ) :
3677
i === 0 ? 0 : i === stopCount - 1 ? lineLength : null );
3679
// Fill in gaps with evenly-spaced offsets
3680
for( i = 1; i < stopCount; i++ ) {
3681
if( stopPx[ i ] === null ) {
3682
before = stopPx[ i - 1 ];
3685
after = stopPx[ ++j ];
3686
} while( after === null );
3687
stopPx[ i ] = before + ( after - before ) / ( j - i + 1 );
3692
'<svg width="' + bgWidth + '" height="' + bgHeight + '" xmlns="http://www.w3.org/2000/svg">' +
3694
'<linearGradient id="g" gradientUnits="userSpaceOnUse"' +
3695
' x1="' + ( startX / bgWidth * 100 ) + '%" y1="' + ( startY / bgHeight * 100 ) + '%" x2="' + ( endX / bgWidth * 100 ) + '%" y2="' + ( endY / bgHeight * 100 ) + '%">'
3698
// Convert to percentage along the SVG gradient line and add to the stops list
3699
for( i = 0; i < stopCount; i++ ) {
3701
'<stop offset="' + ( stopPx[ i ] / lineLength ) +
3702
'" stop-color="' + stopsInfo[i].color.colorValue( el ) +
3703
'" stop-opacity="' + stopsInfo[i].color.alpha() + '"/>'
3708
'</linearGradient>' +
3710
'<rect width="100%" height="100%" fill="url(#g)"/>' +
3714
return svg.join( '' );
3717
destroy: function() {
3718
this.parent.setBackgroundLayer( this.bgLayerZIndex );
3723
* Renderer for border-image
3725
* @param {Element} el The target element
3726
* @param {Object} styleInfos The StyleInfo objects
3727
* @param {PIE.RootRenderer} parent
3729
PIE.IE9BorderImageRenderer = PIE.RendererBase.newRenderer( {
3737
needsUpdate: function() {
3738
return this.styleInfos.borderImageInfo.changed();
3741
isActive: function() {
3742
return this.styleInfos.borderImageInfo.isActive();
3747
props = me.styleInfos.borderImageInfo.getProps(),
3748
borderProps = me.styleInfos.borderInfo.getProps(),
3749
bounds = me.boundsInfo.getBounds(),
3750
repeat = props.repeat,
3753
el = me.targetElement,
3756
PIE.Util.withImageSize( props.src, function( imgSize ) {
3762
// The image cannot be referenced as a URL directly in the SVG because IE9 throws a strange
3763
// security exception (perhaps due to cross-origin policy within data URIs?) Therefore we
3764
// work around this by converting the image data into a data URI itself using a transient
3765
// canvas. This unfortunately requires the border-image src to be within the same domain,
3766
// which isn't a limitation in true border-image, so we need to try and find a better fix.
3767
imgSrc = me.imageToDataURI( props.src, imgW, imgH ),
3770
STRETCH = me.STRETCH,
3774
zero = PIE.getLength( '0' ),
3775
widths = props.widths || ( borderProps ? borderProps.widths : { 't': zero, 'r': zero, 'b': zero, 'l': zero } ),
3776
widthT = widths['t'].pixels( el ),
3777
widthR = widths['r'].pixels( el ),
3778
widthB = widths['b'].pixels( el ),
3779
widthL = widths['l'].pixels( el ),
3780
slices = props.slice,
3781
sliceT = slices['t'].pixels( el ),
3782
sliceR = slices['r'].pixels( el ),
3783
sliceB = slices['b'].pixels( el ),
3784
sliceL = slices['l'].pixels( el ),
3785
centerW = elW - widthL - widthR,
3786
middleH = elH - widthT - widthB,
3787
imgCenterW = imgW - sliceL - sliceR,
3788
imgMiddleH = imgH - sliceT - sliceB,
3790
// Determine the size of each tile - 'round' is handled below
3791
tileSizeT = repeatH === STRETCH ? centerW : imgCenterW * widthT / sliceT,
3792
tileSizeR = repeatV === STRETCH ? middleH : imgMiddleH * widthR / sliceR,
3793
tileSizeB = repeatH === STRETCH ? centerW : imgCenterW * widthB / sliceB,
3794
tileSizeL = repeatV === STRETCH ? middleH : imgMiddleH * widthL / sliceL,
3801
// For 'round', subtract from each tile's size enough so that they fill the space a whole number of times
3802
if (repeatH === ROUND) {
3803
tileSizeT -= (tileSizeT - (centerW % tileSizeT || tileSizeT)) / ceil(centerW / tileSizeT);
3804
tileSizeB -= (tileSizeB - (centerW % tileSizeB || tileSizeB)) / ceil(centerW / tileSizeB);
3806
if (repeatV === ROUND) {
3807
tileSizeR -= (tileSizeR - (middleH % tileSizeR || tileSizeR)) / ceil(middleH / tileSizeR);
3808
tileSizeL -= (tileSizeL - (middleH % tileSizeL || tileSizeL)) / ceil(middleH / tileSizeL);
3812
// Build the SVG for the border-image rendering. Add each piece as a pattern, which is then stretched
3813
// or repeated as the fill of a rect of appropriate size.
3815
'<svg width="' + elW + '" height="' + elH + '" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">'
3818
function addImage( x, y, w, h, cropX, cropY, cropW, cropH, tileW, tileH ) {
3820
'<pattern patternUnits="userSpaceOnUse" id="pattern' + i + '" ' +
3821
'x="' + (repeatH === REPEAT ? x + w / 2 - tileW / 2 : x) + '" ' +
3822
'y="' + (repeatV === REPEAT ? y + h / 2 - tileH / 2 : y) + '" ' +
3823
'width="' + tileW + '" height="' + tileH + '">' +
3824
'<svg width="' + tileW + '" height="' + tileH + '" viewBox="' + cropX + ' ' + cropY + ' ' + cropW + ' ' + cropH + '" preserveAspectRatio="none">' +
3825
'<image xlink:href="' + imgSrc + '" x="0" y="0" width="' + imgW + '" height="' + imgH + '" />' +
3830
'<rect x="' + x + '" y="' + y + '" width="' + w + '" height="' + h + '" fill="url(#pattern' + i + ')" />'
3834
addImage( 0, 0, widthL, widthT, 0, 0, sliceL, sliceT, widthL, widthT ); // top left
3835
addImage( widthL, 0, centerW, widthT, sliceL, 0, imgCenterW, sliceT, tileSizeT, widthT ); // top center
3836
addImage( elW - widthR, 0, widthR, widthT, imgW - sliceR, 0, sliceR, sliceT, widthR, widthT ); // top right
3837
addImage( 0, widthT, widthL, middleH, 0, sliceT, sliceL, imgMiddleH, widthL, tileSizeL ); // middle left
3838
if ( props.fill ) { // center fill
3839
addImage( widthL, widthT, centerW, middleH, sliceL, sliceT, imgCenterW, imgMiddleH,
3840
tileSizeT || tileSizeB || imgCenterW, tileSizeL || tileSizeR || imgMiddleH );
3842
addImage( elW - widthR, widthT, widthR, middleH, imgW - sliceR, sliceT, sliceR, imgMiddleH, widthR, tileSizeR ); // middle right
3843
addImage( 0, elH - widthB, widthL, widthB, 0, imgH - sliceB, sliceL, sliceB, widthL, widthB ); // bottom left
3844
addImage( widthL, elH - widthB, centerW, widthB, sliceL, imgH - sliceB, imgCenterW, sliceB, tileSizeB, widthB ); // bottom center
3845
addImage( elW - widthR, elH - widthB, widthR, widthB, imgW - sliceR, imgH - sliceB, sliceR, sliceB, widthR, widthB ); // bottom right
3849
patterns.join('\n') +
3855
me.parent.setBackgroundLayer( me.bgLayerZIndex, 'url(data:image/svg+xml,' + escape( svg.join( '' ) ) + ') no-repeat border-box border-box' );
3857
// If the border-image's src wasn't immediately available, the SVG for its background layer
3858
// will have been created asynchronously after the main element's update has finished; we'll
3859
// therefore need to force the root renderer to sync to the final background once finished.
3861
me.parent.finishUpdate();
3869
* Convert a given image to a data URI
3871
imageToDataURI: (function() {
3873
return function( src, width, height ) {
3874
var uri = uris[ src ],
3877
image = new Image();
3878
canvas = doc.createElement( 'canvas' );
3880
canvas.width = width;
3881
canvas.height = height;
3882
canvas.getContext( '2d' ).drawImage( image, 0, 0 );
3883
uri = uris[ src ] = canvas.toDataURL();
3889
prepareUpdate: PIE.BorderImageRenderer.prototype.prepareUpdate,
3891
destroy: function() {
3893
rs = me.targetElement.runtimeStyle;
3894
me.parent.setBackgroundLayer( me.bgLayerZIndex );
3895
rs.borderColor = rs.borderStyle = rs.borderWidth = '';
3900
PIE.Element = (function() {
3903
lazyInitCssProp = PIE.CSS_PREFIX + 'lazy-init',
3904
pollCssProp = PIE.CSS_PREFIX + 'poll',
3905
hoverClass = PIE.CLASS_PREFIX + 'hover',
3906
activeClass = PIE.CLASS_PREFIX + 'active',
3907
focusClass = PIE.CLASS_PREFIX + 'focus',
3908
firstChildClass = PIE.CLASS_PREFIX + 'first-child',
3909
ignorePropertyNames = { 'background':1, 'bgColor':1, 'display': 1 },
3910
classNameRegExes = {},
3914
function addClass( el, className ) {
3915
el.className += ' ' + className;
3918
function removeClass( el, className ) {
3919
var re = classNameRegExes[ className ] ||
3920
( classNameRegExes[ className ] = new RegExp( '\\b' + className + '\\b', 'g' ) );
3921
el.className = el.className.replace( re, '' );
3924
function delayAddClass( el, className /*, className2*/ ) {
3925
var classes = dummyArray.slice.call( arguments, 1 ),
3927
setTimeout( function() {
3929
addClass( el, classes[ i ] );
3934
function delayRemoveClass( el, className /*, className2*/ ) {
3935
var classes = dummyArray.slice.call( arguments, 1 ),
3937
setTimeout( function() {
3939
removeClass( el, classes[ i ] );
3946
function Element( el ) {
3949
boundsInfo = new PIE.BoundsInfo( el ),
3955
eventListeners = [],
3961
* Initialize PIE for this element.
3964
if( !initialized ) {
3967
ieDocMode = PIE.ieDocMode,
3968
cs = el.currentStyle,
3969
lazy = cs.getAttribute( lazyInitCssProp ) === 'true',
3972
// Polling for size/position changes: default to on in IE8, off otherwise, overridable by -pie-poll
3973
poll = cs.getAttribute( pollCssProp );
3974
poll = ieDocMode > 7 ? poll !== 'false' : poll === 'true';
3976
// Force layout so move/resize events will fire. Set this as soon as possible to avoid layout changes
3977
// after load, but make sure it only gets called the first time through to avoid recursive calls to init().
3978
if( !initializing ) {
3980
el.runtimeStyle.zoom = 1;
3981
initFirstChildPseudoClass();
3986
// If the -pie-lazy-init:true flag is set, check if the element is outside the viewport and if so, delay initialization
3987
if( lazy && ( bounds = boundsInfo.getBounds() ) && ( docEl = doc.documentElement || doc.body ) &&
3988
( bounds.y > docEl.clientHeight || bounds.x > docEl.clientWidth || bounds.y + bounds.h < 0 || bounds.x + bounds.w < 0 ) ) {
3991
PIE.OnScroll.observe( init );
3995
delayed = initializing = 0;
3996
PIE.OnScroll.unobserve( init );
3998
// Create the style infos and renderers
3999
if ( ieDocMode === 9 ) {
4001
backgroundInfo: new PIE.BackgroundStyleInfo( el ),
4002
borderImageInfo: new PIE.BorderImageStyleInfo( el ),
4003
borderInfo: new PIE.BorderStyleInfo( el )
4006
styleInfos.backgroundInfo,
4007
styleInfos.borderImageInfo
4009
rootRenderer = new PIE.IE9RootRenderer( el, boundsInfo, styleInfos );
4011
new PIE.IE9BackgroundRenderer( el, boundsInfo, styleInfos, rootRenderer ),
4012
new PIE.IE9BorderImageRenderer( el, boundsInfo, styleInfos, rootRenderer )
4017
backgroundInfo: new PIE.BackgroundStyleInfo( el ),
4018
borderInfo: new PIE.BorderStyleInfo( el ),
4019
borderImageInfo: new PIE.BorderImageStyleInfo( el ),
4020
borderRadiusInfo: new PIE.BorderRadiusStyleInfo( el ),
4021
boxShadowInfo: new PIE.BoxShadowStyleInfo( el ),
4022
visibilityInfo: new PIE.VisibilityStyleInfo( el )
4025
styleInfos.backgroundInfo,
4026
styleInfos.borderInfo,
4027
styleInfos.borderImageInfo,
4028
styleInfos.borderRadiusInfo,
4029
styleInfos.boxShadowInfo,
4030
styleInfos.visibilityInfo
4032
rootRenderer = new PIE.RootRenderer( el, boundsInfo, styleInfos );
4034
new PIE.BoxShadowOutsetRenderer( el, boundsInfo, styleInfos, rootRenderer ),
4035
new PIE.BackgroundRenderer( el, boundsInfo, styleInfos, rootRenderer ),
4036
//new PIE.BoxShadowInsetRenderer( el, boundsInfo, styleInfos, rootRenderer ),
4037
new PIE.BorderRenderer( el, boundsInfo, styleInfos, rootRenderer ),
4038
new PIE.BorderImageRenderer( el, boundsInfo, styleInfos, rootRenderer )
4040
if( el.tagName === 'IMG' ) {
4041
childRenderers.push( new PIE.ImgRenderer( el, boundsInfo, styleInfos, rootRenderer ) );
4043
rootRenderer.childRenderers = childRenderers; // circular reference, can't pass in constructor; TODO is there a cleaner way?
4045
renderers = [ rootRenderer ].concat( childRenderers );
4047
// Add property change listeners to ancestors if requested
4048
initAncestorEventListeners();
4050
// Add to list of polled elements in IE8
4052
PIE.Heartbeat.observe( update );
4053
PIE.Heartbeat.run();
4056
// Trigger rendering
4060
if( !eventsAttached ) {
4062
if( ieDocMode < 9 ) {
4063
addListener( el, 'onmove', handleMoveOrResize );
4065
addListener( el, 'onresize', handleMoveOrResize );
4066
addListener( el, 'onpropertychange', propChanged );
4067
addListener( el, 'onmouseenter', mouseEntered );
4068
addListener( el, 'onmouseleave', mouseLeft );
4069
addListener( el, 'onmousedown', mousePressed );
4070
if( el.tagName in PIE.focusableElements ) {
4071
addListener( el, 'onfocus', focused );
4072
addListener( el, 'onblur', blurred );
4074
PIE.OnResize.observe( handleMoveOrResize );
4076
PIE.OnUnload.observe( removeEventListeners );
4079
boundsInfo.unlock();
4087
* Event handler for onmove and onresize events. Invokes update() only if the element's
4088
* bounds have previously been calculated, to prevent multiple runs during page load when
4089
* the element has no initial CSS3 properties.
4091
function handleMoveOrResize() {
4092
if( boundsInfo && boundsInfo.hasBeenQueried() ) {
4099
* Update position and/or size as necessary. Both move and resize events call
4100
* this rather than the updatePos/Size functions because sometimes, particularly
4101
* during page load, one will fire but the other won't.
4103
function update( force ) {
4106
var i, len = renderers.length;
4109
for( i = 0; i < len; i++ ) {
4110
renderers[i].prepareUpdate();
4112
if( force || boundsInfo.positionChanged() ) {
4113
/* TODO just using getBoundingClientRect (used internally by BoundsInfo) for detecting
4114
position changes may not always be accurate; it's possible that
4115
an element will actually move relative to its positioning parent, but its position
4116
relative to the viewport will stay the same. Need to come up with a better way to
4117
track movement. The most accurate would be the same logic used in RootRenderer.updatePos()
4118
but that is a more expensive operation since it does some DOM walking, and we want this
4119
check to be as fast as possible. */
4120
for( i = 0; i < len; i++ ) {
4121
renderers[i].updatePos();
4124
if( force || boundsInfo.sizeChanged() ) {
4125
for( i = 0; i < len; i++ ) {
4126
renderers[i].updateSize();
4129
rootRenderer.finishUpdate();
4132
else if( !initializing ) {
4139
* Handle property changes to trigger update when appropriate.
4141
function propChanged() {
4142
var i, len = renderers.length,
4146
// Some elements like <table> fire onpropertychange events for old-school background properties
4147
// ('background', 'bgColor') when runtimeStyle background properties are changed, which
4148
// results in an infinite loop; therefore we filter out those property names. Also, 'display'
4149
// is ignored because size calculations don't work correctly immediately when its onpropertychange
4150
// event fires, and because it will trigger an onresize event anyway.
4151
if( !destroyed && !( e && e.propertyName in ignorePropertyNames ) ) {
4154
for( i = 0; i < len; i++ ) {
4155
renderers[i].prepareUpdate();
4157
for( i = 0; i < len; i++ ) {
4158
renderer = renderers[i];
4159
// Make sure position is synced if the element hasn't already been rendered.
4160
// TODO this feels sloppy - look into merging propChanged and update functions
4161
if( !renderer.isPositioned ) {
4162
renderer.updatePos();
4164
if( renderer.needsUpdate() ) {
4165
renderer.updateProps();
4168
rootRenderer.finishUpdate();
4171
else if( !initializing ) {
4179
* Handle mouseenter events. Adds a custom class to the element to allow IE6 to add
4180
* hover styles to non-link elements, and to trigger a propertychange update.
4182
function mouseEntered() {
4183
//must delay this because the mouseenter event fires before the :hover styles are added.
4184
delayAddClass( el, hoverClass );
4188
* Handle mouseleave events
4190
function mouseLeft() {
4191
//must delay this because the mouseleave event fires before the :hover styles are removed.
4192
delayRemoveClass( el, hoverClass, activeClass );
4196
* Handle mousedown events. Adds a custom class to the element to allow IE6 to add
4197
* active styles to non-link elements, and to trigger a propertychange update.
4199
function mousePressed() {
4200
//must delay this because the mousedown event fires before the :active styles are added.
4201
delayAddClass( el, activeClass );
4203
// listen for mouseups on the document; can't just be on the element because the user might
4204
// have dragged out of the element while the mouse button was held down
4205
PIE.OnMouseup.observe( mouseReleased );
4209
* Handle mouseup events
4211
function mouseReleased() {
4212
//must delay this because the mouseup event fires before the :active styles are removed.
4213
delayRemoveClass( el, activeClass );
4215
PIE.OnMouseup.unobserve( mouseReleased );
4219
* Handle focus events. Adds a custom class to the element to trigger a propertychange update.
4221
function focused() {
4222
//must delay this because the focus event fires before the :focus styles are added.
4223
delayAddClass( el, focusClass );
4227
* Handle blur events
4229
function blurred() {
4230
//must delay this because the blur event fires before the :focus styles are removed.
4231
delayRemoveClass( el, focusClass );
4236
* Handle property changes on ancestors of the element; see initAncestorEventListeners()
4237
* which adds these listeners as requested with the -pie-watch-ancestors CSS property.
4239
function ancestorPropChanged() {
4240
var name = event.propertyName;
4241
if( name === 'className' || name === 'id' ) {
4246
function lockAll() {
4248
for( var i = styleInfosArr.length; i--; ) {
4249
styleInfosArr[i].lock();
4253
function unlockAll() {
4254
for( var i = styleInfosArr.length; i--; ) {
4255
styleInfosArr[i].unlock();
4257
boundsInfo.unlock();
4261
function addListener( targetEl, type, handler ) {
4262
targetEl.attachEvent( type, handler );
4263
eventListeners.push( [ targetEl, type, handler ] );
4267
* Remove all event listeners from the element and any monitored ancestors.
4269
function removeEventListeners() {
4270
if (eventsAttached) {
4271
var i = eventListeners.length,
4275
listener = eventListeners[ i ];
4276
listener[ 0 ].detachEvent( listener[ 1 ], listener[ 2 ] );
4279
PIE.OnUnload.unobserve( removeEventListeners );
4281
eventListeners = [];
4287
* Clean everything up when the behavior is removed from the element, or the element
4288
* is manually destroyed.
4290
function destroy() {
4294
removeEventListeners();
4298
// destroy any active renderers
4300
for( i = 0, len = renderers.length; i < len; i++ ) {
4301
renderers[i].finalized = 1;
4302
renderers[i].destroy();
4306
// Remove from list of polled elements in IE8
4308
PIE.Heartbeat.unobserve( update );
4310
// Stop onresize listening
4311
PIE.OnResize.unobserve( update );
4314
renderers = boundsInfo = styleInfos = styleInfosArr = el = null;
4320
* If requested via the custom -pie-watch-ancestors CSS property, add onpropertychange and
4321
* other event listeners to ancestor(s) of the element so we can pick up style changes
4322
* based on CSS rules using descendant selectors.
4324
function initAncestorEventListeners() {
4325
var watch = el.currentStyle.getAttribute( PIE.CSS_PREFIX + 'watch-ancestors' ),
4328
watch = parseInt( watch, 10 );
4331
while( a && ( watch === 'NaN' || i++ < watch ) ) {
4332
addListener( a, 'onpropertychange', ancestorPropChanged );
4333
addListener( a, 'onmouseenter', mouseEntered );
4334
addListener( a, 'onmouseleave', mouseLeft );
4335
addListener( a, 'onmousedown', mousePressed );
4336
if( a.tagName in PIE.focusableElements ) {
4337
addListener( a, 'onfocus', focused );
4338
addListener( a, 'onblur', blurred );
4347
* If the target element is a first child, add a pie_first-child class to it. This allows using
4348
* the added class as a workaround for the fact that PIE's rendering element breaks the :first-child
4349
* pseudo-class selector.
4351
function initFirstChildPseudoClass() {
4354
while( tmpEl = tmpEl.previousSibling ) {
4355
if( tmpEl.nodeType === 1 ) {
4361
addClass( el, firstChildClass );
4366
// These methods are all already bound to this instance so there's no need to wrap them
4367
// in a closure to maintain the 'this' scope object when calling them.
4369
this.update = update;
4370
this.destroy = destroy;
4374
Element.getInstance = function( el ) {
4375
var id = PIE.Util.getUID( el );
4376
return wrappers[ id ] || ( wrappers[ id ] = new Element( el ) );
4379
Element.destroy = function( el ) {
4380
var id = PIE.Util.getUID( el ),
4381
wrapper = wrappers[ id ];
4384
delete wrappers[ id ];
4388
Element.destroyAll = function() {
4389
var els = [], wrapper;
4391
for( var w in wrappers ) {
4392
if( wrappers.hasOwnProperty( w ) ) {
4393
wrapper = wrappers[ w ];
4394
els.push( wrapper.el );
4407
* This file exposes the public API for invoking PIE.
4412
* @property supportsVML
4413
* True if the current IE browser environment has a functioning VML engine. Should be true
4414
* in most IEs, but in rare cases may be false. If false, PIE will exit immediately when
4415
* attached to an element; this property may be used for debugging or by external scripts
4416
* to perform some special action when VML support is absent.
4419
PIE[ 'supportsVML' ] = PIE.supportsVML;
4423
* Programatically attach PIE to a single element.
4424
* @param {Element} el
4426
PIE[ 'attach' ] = function( el ) {
4427
if (PIE.ieDocMode < 10 && PIE.supportsVML) {
4428
PIE.Element.getInstance( el ).init();
4434
* Programatically detach PIE from a single element.
4435
* @param {Element} el
4437
PIE[ 'detach' ] = function( el ) {
4438
PIE.Element.destroy( el );
b'\\ No newline at end of file'
added
removed
tour/pie/PIE_uncompressed.js
