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website/assets/lib/css3pie/PIE_uncompressed.js

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Initial commit
2022-07-10 10:20:04 +01:00
/*
PIE: CSS3 rendering for IE
Version 1.0.0
http://css3pie.com
Dual-licensed for use under the Apache License Version 2.0 or the General Public License (GPL) Version 2.
*/
(function(){
var doc = document;var PIE = window['PIE'];
if( !PIE ) {
PIE = window['PIE'] = {
CSS_PREFIX: '-pie-',
STYLE_PREFIX: 'Pie',
CLASS_PREFIX: 'pie_',
tableCellTags: {
'TD': 1,
'TH': 1
},
/**
* Lookup table of elements which cannot take custom children.
*/
childlessElements: {
'TABLE':1,
'THEAD':1,
'TBODY':1,
'TFOOT':1,
'TR':1,
'INPUT':1,
'TEXTAREA':1,
'SELECT':1,
'OPTION':1,
'IMG':1,
'HR':1
},
/**
* Elements that can receive user focus
*/
focusableElements: {
'A':1,
'INPUT':1,
'TEXTAREA':1,
'SELECT':1,
'BUTTON':1
},
/**
* Values of the type attribute for input elements displayed as buttons
*/
inputButtonTypes: {
'submit':1,
'button':1,
'reset':1
},
emptyFn: function() {}
};
// Force the background cache to be used. No reason it shouldn't be.
try {
doc.execCommand( 'BackgroundImageCache', false, true );
} catch(e) {}
(function() {
/*
* IE version detection approach by James Padolsey, with modifications -- from
* http://james.padolsey.com/javascript/detect-ie-in-js-using-conditional-comments/
*/
var ieVersion = 4,
div = doc.createElement('div'),
all = div.getElementsByTagName('i'),
shape;
while (
div.innerHTML = '<!--[if gt IE ' + (++ieVersion) + ']><i></i><![endif]-->',
all[0]
) {}
PIE.ieVersion = ieVersion;
// Detect IE6
if( ieVersion === 6 ) {
// IE6 can't access properties with leading dash, but can without it.
PIE.CSS_PREFIX = PIE.CSS_PREFIX.replace( /^-/, '' );
}
PIE.ieDocMode = doc.documentMode || PIE.ieVersion;
// Detect VML support (a small number of IE installs don't have a working VML engine)
div.innerHTML = '<v:shape adj="1"/>';
shape = div.firstChild;
shape.style['behavior'] = 'url(#default#VML)';
PIE.supportsVML = (typeof shape['adj'] === "object");
}());
/**
* Utility functions
*/
(function() {
var vmlCreatorDoc,
idNum = 0,
imageSizes = {};
PIE.Util = {
/**
* To create a VML element, it must be created by a Document which has the VML
* namespace set. Unfortunately, if you try to add the namespace programatically
* into the main document, you will get an "Unspecified error" when trying to
* access document.namespaces before the document is finished loading. To get
* around this, we create a DocumentFragment, which in IE land is apparently a
* full-fledged Document. It allows adding namespaces immediately, so we add the
* namespace there and then have it create the VML element.
* @param {string} tag The tag name for the VML element
* @return {Element} The new VML element
*/
createVmlElement: function( tag ) {
var vmlPrefix = 'css3vml';
if( !vmlCreatorDoc ) {
vmlCreatorDoc = doc.createDocumentFragment();
vmlCreatorDoc.namespaces.add( vmlPrefix, 'urn:schemas-microsoft-com:vml' );
}
return vmlCreatorDoc.createElement( vmlPrefix + ':' + tag );
},
/**
* Generate and return a unique ID for a given object. The generated ID is stored
* as a property of the object for future reuse.
* @param {Object} obj
*/
getUID: function( obj ) {
return obj && obj[ '_pieId' ] || ( obj[ '_pieId' ] = '_' + ++idNum );
},
/**
* Simple utility for merging objects
* @param {Object} obj1 The main object into which all others will be merged
* @param {...Object} var_args Other objects which will be merged into the first, in order
*/
merge: function( obj1 ) {
var i, len, p, objN, args = arguments;
for( i = 1, len = args.length; i < len; i++ ) {
objN = args[i];
for( p in objN ) {
if( objN.hasOwnProperty( p ) ) {
obj1[ p ] = objN[ p ];
}
}
}
return obj1;
},
/**
* Execute a callback function, passing it the dimensions of a given image once
* they are known.
* @param {string} src The source URL of the image
* @param {function({w:number, h:number})} func The callback function to be called once the image dimensions are known
* @param {Object} ctx A context object which will be used as the 'this' value within the executed callback function
*/
withImageSize: function( src, func, ctx ) {
var size = imageSizes[ src ], img, queue;
if( size ) {
// If we have a queue, add to it
if( Object.prototype.toString.call( size ) === '[object Array]' ) {
size.push( [ func, ctx ] );
}
// Already have the size cached, call func right away
else {
func.call( ctx, size );
}
} else {
queue = imageSizes[ src ] = [ [ func, ctx ] ]; //create queue
img = new Image();
img.onload = function() {
size = imageSizes[ src ] = { w: img.width, h: img.height };
for( var i = 0, len = queue.length; i < len; i++ ) {
queue[ i ][ 0 ].call( queue[ i ][ 1 ], size );
}
img.onload = null;
};
img.src = src;
}
}
};
})();/**
* Utility functions for handling gradients
*/
PIE.GradientUtil = {
getGradientMetrics: function( el, width, height, gradientInfo ) {
var angle = gradientInfo.angle,
startPos = gradientInfo.gradientStart,
startX, startY,
endX, endY,
startCornerX, startCornerY,
endCornerX, endCornerY,
deltaX, deltaY,
p, UNDEF;
// Find the "start" and "end" corners; these are the corners furthest along the gradient line.
// This is used below to find the start/end positions of the CSS3 gradient-line, and also in finding
// the total length of the VML rendered gradient-line corner to corner.
function findCorners() {
startCornerX = ( angle >= 90 && angle < 270 ) ? width : 0;
startCornerY = angle < 180 ? height : 0;
endCornerX = width - startCornerX;
endCornerY = height - startCornerY;
}
// Normalize the angle to a value between [0, 360)
function normalizeAngle() {
while( angle < 0 ) {
angle += 360;
}
angle = angle % 360;
}
// Find the start and end points of the gradient
if( startPos ) {
startPos = startPos.coords( el, width, height );
startX = startPos.x;
startY = startPos.y;
}
if( angle ) {
angle = angle.degrees();
normalizeAngle();
findCorners();
// If no start position was specified, then choose a corner as the starting point.
if( !startPos ) {
startX = startCornerX;
startY = startCornerY;
}
// Find the end position by extending a perpendicular line from the gradient-line which
// intersects the corner opposite from the starting corner.
p = PIE.GradientUtil.perpendicularIntersect( startX, startY, angle, endCornerX, endCornerY );
endX = p[0];
endY = p[1];
}
else if( startPos ) {
// Start position but no angle specified: find the end point by rotating 180deg around the center
endX = width - startX;
endY = height - startY;
}
else {
// Neither position nor angle specified; create vertical gradient from top to bottom
startX = startY = endX = 0;
endY = height;
}
deltaX = endX - startX;
deltaY = endY - startY;
if( angle === UNDEF ) {
// Get the angle based on the change in x/y from start to end point. Checks first for horizontal
// or vertical angles so they get exact whole numbers rather than what atan2 gives.
angle = ( !deltaX ? ( deltaY < 0 ? 90 : 270 ) :
( !deltaY ? ( deltaX < 0 ? 180 : 0 ) :
-Math.atan2( deltaY, deltaX ) / Math.PI * 180
)
);
normalizeAngle();
findCorners();
}
return {
angle: angle,
startX: startX,
startY: startY,
endX: endX,
endY: endY,
startCornerX: startCornerX,
startCornerY: startCornerY,
endCornerX: endCornerX,
endCornerY: endCornerY,
deltaX: deltaX,
deltaY: deltaY,
lineLength: PIE.GradientUtil.distance( startX, startY, endX, endY )
}
},
/**
* Find the point along a given line (defined by a starting point and an angle), at which
* that line is intersected by a perpendicular line extending through another point.
* @param x1 - x coord of the starting point
* @param y1 - y coord of the starting point
* @param angle - angle of the line extending from the starting point (in degrees)
* @param x2 - x coord of point along the perpendicular line
* @param y2 - y coord of point along the perpendicular line
* @return [ x, y ]
*/
perpendicularIntersect: function( x1, y1, angle, x2, y2 ) {
// Handle straight vertical and horizontal angles, for performance and to avoid
// divide-by-zero errors.
if( angle === 0 || angle === 180 ) {
return [ x2, y1 ];
}
else if( angle === 90 || angle === 270 ) {
return [ x1, y2 ];
}
else {
// General approach: determine the Ax+By=C formula for each line (the slope of the second
// line is the negative inverse of the first) and then solve for where both formulas have
// the same x/y values.
var a1 = Math.tan( -angle * Math.PI / 180 ),
c1 = a1 * x1 - y1,
a2 = -1 / a1,
c2 = a2 * x2 - y2,
d = a2 - a1,
endX = ( c2 - c1 ) / d,
endY = ( a1 * c2 - a2 * c1 ) / d;
return [ endX, endY ];
}
},
/**
* Find the distance between two points
* @param {Number} p1x
* @param {Number} p1y
* @param {Number} p2x
* @param {Number} p2y
* @return {Number} the distance
*/
distance: function( p1x, p1y, p2x, p2y ) {
var dx = p2x - p1x,
dy = p2y - p1y;
return Math.abs(
dx === 0 ? dy :
dy === 0 ? dx :
Math.sqrt( dx * dx + dy * dy )
);
}
};/**
*
*/
PIE.Observable = function() {
/**
* List of registered observer functions
*/
this.observers = [];
/**
* Hash of function ids to their position in the observers list, for fast lookup
*/
this.indexes = {};
};
PIE.Observable.prototype = {
observe: function( fn ) {
var id = PIE.Util.getUID( fn ),
indexes = this.indexes,
observers = this.observers;
if( !( id in indexes ) ) {
indexes[ id ] = observers.length;
observers.push( fn );
}
},
unobserve: function( fn ) {
var id = PIE.Util.getUID( fn ),
indexes = this.indexes;
if( id && id in indexes ) {
delete this.observers[ indexes[ id ] ];
delete indexes[ id ];
}
},
fire: function() {
var o = this.observers,
i = o.length;
while( i-- ) {
o[ i ] && o[ i ]();
}
}
};/*
* Simple heartbeat timer - this is a brute-force workaround for syncing issues caused by IE not
* always firing the onmove and onresize events when elements are moved or resized. We check a few
* times every second to make sure the elements have the correct position and size. See Element.js
* which adds heartbeat listeners based on the custom -pie-poll flag, which defaults to true in IE8-9
* and false elsewhere.
*/
PIE.Heartbeat = new PIE.Observable();
PIE.Heartbeat.run = function() {
var me = this,
interval;
if( !me.running ) {
interval = doc.documentElement.currentStyle.getAttribute( PIE.CSS_PREFIX + 'poll-interval' ) || 250;
(function beat() {
me.fire();
setTimeout(beat, interval);
})();
me.running = 1;
}
};
/**
* Create an observable listener for the onunload event
*/
(function() {
PIE.OnUnload = new PIE.Observable();
function handleUnload() {
PIE.OnUnload.fire();
window.detachEvent( 'onunload', handleUnload );
window[ 'PIE' ] = null;
}
window.attachEvent( 'onunload', handleUnload );
/**
* Attach an event which automatically gets detached onunload
*/
PIE.OnUnload.attachManagedEvent = function( target, name, handler ) {
target.attachEvent( name, handler );
this.observe( function() {
target.detachEvent( name, handler );
} );
};
})()/**
* Create a single observable listener for window resize events.
*/
PIE.OnResize = new PIE.Observable();
PIE.OnUnload.attachManagedEvent( window, 'onresize', function() { PIE.OnResize.fire(); } );
/**
* Create a single observable listener for scroll events. Used for lazy loading based
* on the viewport, and for fixed position backgrounds.
*/
(function() {
PIE.OnScroll = new PIE.Observable();
function scrolled() {
PIE.OnScroll.fire();
}
PIE.OnUnload.attachManagedEvent( window, 'onscroll', scrolled );
PIE.OnResize.observe( scrolled );
})();
/**
* Listen for printing events, destroy all active PIE instances when printing, and
* restore them afterward.
*/
(function() {
var elements;
function beforePrint() {
elements = PIE.Element.destroyAll();
}
function afterPrint() {
if( elements ) {
for( var i = 0, len = elements.length; i < len; i++ ) {
PIE[ 'attach' ]( elements[i] );
}
elements = 0;
}
}
if( PIE.ieDocMode < 9 ) {
PIE.OnUnload.attachManagedEvent( window, 'onbeforeprint', beforePrint );
PIE.OnUnload.attachManagedEvent( window, 'onafterprint', afterPrint );
}
})();/**
* Create a single observable listener for document mouseup events.
*/
PIE.OnMouseup = new PIE.Observable();
PIE.OnUnload.attachManagedEvent( doc, 'onmouseup', function() { PIE.OnMouseup.fire(); } );
/**
* Wrapper for length and percentage style values. The value is immutable. A singleton instance per unique
* value is returned from PIE.getLength() - always use that instead of instantiating directly.
* @constructor
* @param {string} val The CSS string representing the length. It is assumed that this will already have
* been validated as a valid length or percentage syntax.
*/
PIE.Length = (function() {
var lengthCalcEl = doc.createElement( 'length-calc' ),
parent = doc.body || doc.documentElement,
s = lengthCalcEl.style,
conversions = {},
units = [ 'mm', 'cm', 'in', 'pt', 'pc' ],
i = units.length,
instances = {};
s.position = 'absolute';
s.top = s.left = '-9999px';
parent.appendChild( lengthCalcEl );
while( i-- ) {
s.width = '100' + units[i];
conversions[ units[i] ] = lengthCalcEl.offsetWidth / 100;
}
parent.removeChild( lengthCalcEl );
// All calcs from here on will use 1em
s.width = '1em';
function Length( val ) {
this.val = val;
}
Length.prototype = {
/**
* Regular expression for matching the length unit
* @private
*/
unitRE: /(px|em|ex|mm|cm|in|pt|pc|%)$/,
/**
* Get the numeric value of the length
* @return {number} The value
*/
getNumber: function() {
var num = this.num,
UNDEF;
if( num === UNDEF ) {
num = this.num = parseFloat( this.val );
}
return num;
},
/**
* Get the unit of the length
* @return {string} The unit
*/
getUnit: function() {
var unit = this.unit,
m;
if( !unit ) {
m = this.val.match( this.unitRE );
unit = this.unit = ( m && m[0] ) || 'px';
}
return unit;
},
/**
* Determine whether this is a percentage length value
* @return {boolean}
*/
isPercentage: function() {
return this.getUnit() === '%';
},
/**
* Resolve this length into a number of pixels.
* @param {Element} el - the context element, used to resolve font-relative values
* @param {(function():number|number)=} pct100 - the number of pixels that equal a 100% percentage. This can be either a number or a
* function which will be called to return the number.
*/
pixels: function( el, pct100 ) {
var num = this.getNumber(),
unit = this.getUnit();
switch( unit ) {
case "px":
return num;
case "%":
return num * ( typeof pct100 === 'function' ? pct100() : pct100 ) / 100;
case "em":
return num * this.getEmPixels( el );
case "ex":
return num * this.getEmPixels( el ) / 2;
default:
return num * conversions[ unit ];
}
},
/**
* The em and ex units are relative to the font-size of the current element,
* however if the font-size is set using non-pixel units then we get that value
* rather than a pixel conversion. To get around this, we keep a floating element
* with width:1em which we insert into the target element and then read its offsetWidth.
* For elements that won't accept a child we insert into the parent node and perform
* additional calculation. If the font-size *is* specified in pixels, then we use that
* directly to avoid the expensive DOM manipulation.
* @param {Element} el
* @return {number}
*/
getEmPixels: function( el ) {
var fs = el.currentStyle.fontSize,
px, parent, me;
if( fs.indexOf( 'px' ) > 0 ) {
return parseFloat( fs );
}
else if( el.tagName in PIE.childlessElements ) {
me = this;
parent = el.parentNode;
return PIE.getLength( fs ).pixels( parent, function() {
return me.getEmPixels( parent );
} );
}
else {
el.appendChild( lengthCalcEl );
px = lengthCalcEl.offsetWidth;
if( lengthCalcEl.parentNode === el ) { //not sure how this could be false but it sometimes is
el.removeChild( lengthCalcEl );
}
return px;
}
}
};
/**
* Retrieve a PIE.Length instance for the given value. A shared singleton instance is returned for each unique value.
* @param {string} val The CSS string representing the length. It is assumed that this will already have
* been validated as a valid length or percentage syntax.
*/
PIE.getLength = function( val ) {
return instances[ val ] || ( instances[ val ] = new Length( val ) );
};
return Length;
})();
/**
* Wrapper for a CSS3 bg-position value. Takes up to 2 position keywords and 2 lengths/percentages.
* @constructor
* @param {Array.<PIE.Tokenizer.Token>} tokens The tokens making up the background position value.
*/
PIE.BgPosition = (function() {
var length_fifty = PIE.getLength( '50%' ),
vert_idents = { 'top': 1, 'center': 1, 'bottom': 1 },
horiz_idents = { 'left': 1, 'center': 1, 'right': 1 };
function BgPosition( tokens ) {
this.tokens = tokens;
}
BgPosition.prototype = {
/**
* Normalize the values into the form:
* [ xOffsetSide, xOffsetLength, yOffsetSide, yOffsetLength ]
* where: xOffsetSide is either 'left' or 'right',
* yOffsetSide is either 'top' or 'bottom',
* and x/yOffsetLength are both PIE.Length objects.
* @return {Array}
*/
getValues: function() {
if( !this._values ) {
var tokens = this.tokens,
len = tokens.length,
Tokenizer = PIE.Tokenizer,
identType = Tokenizer.Type,
length_zero = PIE.getLength( '0' ),
type_ident = identType.IDENT,
type_length = identType.LENGTH,
type_percent = identType.PERCENT,
type, value,
vals = [ 'left', length_zero, 'top', length_zero ];
// If only one value, the second is assumed to be 'center'
if( len === 1 ) {
tokens.push( new Tokenizer.Token( type_ident, 'center' ) );
len++;
}
// Two values - CSS2
if( len === 2 ) {
// If both idents, they can appear in either order, so switch them if needed
if( type_ident & ( tokens[0].tokenType | tokens[1].tokenType ) &&
tokens[0].tokenValue in vert_idents && tokens[1].tokenValue in horiz_idents ) {
tokens.push( tokens.shift() );
}
if( tokens[0].tokenType & type_ident ) {
if( tokens[0].tokenValue === 'center' ) {
vals[1] = length_fifty;
} else {
vals[0] = tokens[0].tokenValue;
}
}
else if( tokens[0].isLengthOrPercent() ) {
vals[1] = PIE.getLength( tokens[0].tokenValue );
}
if( tokens[1].tokenType & type_ident ) {
if( tokens[1].tokenValue === 'center' ) {
vals[3] = length_fifty;
} else {
vals[2] = tokens[1].tokenValue;
}
}
else if( tokens[1].isLengthOrPercent() ) {
vals[3] = PIE.getLength( tokens[1].tokenValue );
}
}
// Three or four values - CSS3
else {
// TODO
}
this._values = vals;
}
return this._values;
},
/**
* Find the coordinates of the background image from the upper-left corner of the background area.
* Note that these coordinate values are not rounded.
* @param {Element} el
* @param {number} width - the width for percentages (background area width minus image width)
* @param {number} height - the height for percentages (background area height minus image height)
* @return {Object} { x: Number, y: Number }
*/
coords: function( el, width, height ) {
var vals = this.getValues(),
pxX = vals[1].pixels( el, width ),
pxY = vals[3].pixels( el, height );
return {
x: vals[0] === 'right' ? width - pxX : pxX,
y: vals[2] === 'bottom' ? height - pxY : pxY
};
}
};
return BgPosition;
})();
/**
* Wrapper for a CSS3 background-size value.
* @constructor
* @param {String|PIE.Length} w The width parameter
* @param {String|PIE.Length} h The height parameter, if any
*/
PIE.BgSize = (function() {
var CONTAIN = 'contain',
COVER = 'cover',
AUTO = 'auto';
function BgSize( w, h ) {
this.w = w;
this.h = h;
}
BgSize.prototype = {
pixels: function( el, areaW, areaH, imgW, imgH ) {
var me = this,
w = me.w,
h = me.h,
areaRatio = areaW / areaH,
imgRatio = imgW / imgH;
if ( w === CONTAIN ) {
w = imgRatio > areaRatio ? areaW : areaH * imgRatio;
h = imgRatio > areaRatio ? areaW / imgRatio : areaH;
}
else if ( w === COVER ) {
w = imgRatio < areaRatio ? areaW : areaH * imgRatio;
h = imgRatio < areaRatio ? areaW / imgRatio : areaH;
}
else if ( w === AUTO ) {
h = ( h === AUTO ? imgH : h.pixels( el, areaH ) );
w = h * imgRatio;
}
else {
w = w.pixels( el, areaW );
h = ( h === AUTO ? w / imgRatio : h.pixels( el, areaH ) );
}
return { w: w, h: h };
}
};
BgSize.DEFAULT = new BgSize( AUTO, AUTO );
return BgSize;
})();
/**
* Wrapper for angle values; handles conversion to degrees from all allowed angle units
* @constructor
* @param {string} val The raw CSS value for the angle. It is assumed it has been pre-validated.
*/
PIE.Angle = (function() {
function Angle( val ) {
this.val = val;
}
Angle.prototype = {
unitRE: /[a-z]+$/i,
/**
* @return {string} The unit of the angle value
*/
getUnit: function() {
return this._unit || ( this._unit = this.val.match( this.unitRE )[0].toLowerCase() );
},
/**
* Get the numeric value of the angle in degrees.
* @return {number} The degrees value
*/
degrees: function() {
var deg = this._deg, u, n;
if( deg === undefined ) {
u = this.getUnit();
n = parseFloat( this.val, 10 );
deg = this._deg = ( u === 'deg' ? n : u === 'rad' ? n / Math.PI * 180 : u === 'grad' ? n / 400 * 360 : u === 'turn' ? n * 360 : 0 );
}
return deg;
}
};
return Angle;
})();/**
* Abstraction for colors values. Allows detection of rgba values. A singleton instance per unique
* value is returned from PIE.getColor() - always use that instead of instantiating directly.
* @constructor
* @param {string} val The raw CSS string value for the color
*/
PIE.Color = (function() {
var instances = {};
function Color( val ) {
this.val = val;
}
/**
* Regular expression for matching rgba colors and extracting their components
* @type {RegExp}
*/
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*/;
Color.names = {
"aliceblue":"F0F8FF", "antiquewhite":"FAEBD7", "aqua":"0FF",
"aquamarine":"7FFFD4", "azure":"F0FFFF", "beige":"F5F5DC",
"bisque":"FFE4C4", "black":"000", "blanchedalmond":"FFEBCD",
"blue":"00F", "blueviolet":"8A2BE2", "brown":"A52A2A",
"burlywood":"DEB887", "cadetblue":"5F9EA0", "chartreuse":"7FFF00",
"chocolate":"D2691E", "coral":"FF7F50", "cornflowerblue":"6495ED",
"cornsilk":"FFF8DC", "crimson":"DC143C", "cyan":"0FF",
"darkblue":"00008B", "darkcyan":"008B8B", "darkgoldenrod":"B8860B",
"darkgray":"A9A9A9", "darkgreen":"006400", "darkkhaki":"BDB76B",
"darkmagenta":"8B008B", "darkolivegreen":"556B2F", "darkorange":"FF8C00",
"darkorchid":"9932CC", "darkred":"8B0000", "darksalmon":"E9967A",
"darkseagreen":"8FBC8F", "darkslateblue":"483D8B", "darkslategray":"2F4F4F",
"darkturquoise":"00CED1", "darkviolet":"9400D3", "deeppink":"FF1493",
"deepskyblue":"00BFFF", "dimgray":"696969", "dodgerblue":"1E90FF",
"firebrick":"B22222", "floralwhite":"FFFAF0", "forestgreen":"228B22",
"fuchsia":"F0F", "gainsboro":"DCDCDC", "ghostwhite":"F8F8FF",
"gold":"FFD700", "goldenrod":"DAA520", "gray":"808080",
"green":"008000", "greenyellow":"ADFF2F", "honeydew":"F0FFF0",
"hotpink":"FF69B4", "indianred":"CD5C5C", "indigo":"4B0082",
"ivory":"FFFFF0", "khaki":"F0E68C", "lavender":"E6E6FA",
"lavenderblush":"FFF0F5", "lawngreen":"7CFC00", "lemonchiffon":"FFFACD",
"lightblue":"ADD8E6", "lightcoral":"F08080", "lightcyan":"E0FFFF",
"lightgoldenrodyellow":"FAFAD2", "lightgreen":"90EE90", "lightgrey":"D3D3D3",
"lightpink":"FFB6C1", "lightsalmon":"FFA07A", "lightseagreen":"20B2AA",
"lightskyblue":"87CEFA", "lightslategray":"789", "lightsteelblue":"B0C4DE",
"lightyellow":"FFFFE0", "lime":"0F0", "limegreen":"32CD32",
"linen":"FAF0E6", "magenta":"F0F", "maroon":"800000",
"mediumauqamarine":"66CDAA", "mediumblue":"0000CD", "mediumorchid":"BA55D3",
"mediumpurple":"9370D8", "mediumseagreen":"3CB371", "mediumslateblue":"7B68EE",
"mediumspringgreen":"00FA9A", "mediumturquoise":"48D1CC", "mediumvioletred":"C71585",
"midnightblue":"191970", "mintcream":"F5FFFA", "mistyrose":"FFE4E1",
"moccasin":"FFE4B5", "navajowhite":"FFDEAD", "navy":"000080",
"oldlace":"FDF5E6", "olive":"808000", "olivedrab":"688E23",
"orange":"FFA500", "orangered":"FF4500", "orchid":"DA70D6",
"palegoldenrod":"EEE8AA", "palegreen":"98FB98", "paleturquoise":"AFEEEE",
"palevioletred":"D87093", "papayawhip":"FFEFD5", "peachpuff":"FFDAB9",
"peru":"CD853F", "pink":"FFC0CB", "plum":"DDA0DD",
"powderblue":"B0E0E6", "purple":"800080", "red":"F00",
"rosybrown":"BC8F8F", "royalblue":"4169E1", "saddlebrown":"8B4513",
"salmon":"FA8072", "sandybrown":"F4A460", "seagreen":"2E8B57",
"seashell":"FFF5EE", "sienna":"A0522D", "silver":"C0C0C0",
"skyblue":"87CEEB", "slateblue":"6A5ACD", "slategray":"708090",
"snow":"FFFAFA", "springgreen":"00FF7F", "steelblue":"4682B4",
"tan":"D2B48C", "teal":"008080", "thistle":"D8BFD8",
"tomato":"FF6347", "turquoise":"40E0D0", "violet":"EE82EE",
"wheat":"F5DEB3", "white":"FFF", "whitesmoke":"F5F5F5",
"yellow":"FF0", "yellowgreen":"9ACD32"
};
Color.prototype = {
/**
* @private
*/
parse: function() {
if( !this._color ) {
var me = this,
v = me.val,
vLower,
m = v.match( Color.rgbaRE );
if( m ) {
me._color = 'rgb(' + m[1] + ',' + m[2] + ',' + m[3] + ')';
me._alpha = parseFloat( m[4] );
}
else {
if( ( vLower = v.toLowerCase() ) in Color.names ) {
v = '#' + Color.names[vLower];
}
me._color = v;
me._alpha = ( v === 'transparent' ? 0 : 1 );
}
}
},
/**
* Retrieve the value of the color in a format usable by IE natively. This will be the same as
* the raw input value, except for rgba values which will be converted to an rgb value.
* @param {Element} el The context element, used to get 'currentColor' keyword value.
* @return {string} Color value
*/
colorValue: function( el ) {
this.parse();
return this._color === 'currentColor' ? el.currentStyle.color : this._color;
},
/**
* Retrieve the alpha value of the color. Will be 1 for all values except for rgba values
* with an alpha component.
* @return {number} The alpha value, from 0 to 1.
*/
alpha: function() {
this.parse();
return this._alpha;
}
};
/**
* Retrieve a PIE.Color instance for the given value. A shared singleton instance is returned for each unique value.
* @param {string} val The CSS string representing the color. It is assumed that this will already have
* been validated as a valid color syntax.
*/
PIE.getColor = function(val) {
return instances[ val ] || ( instances[ val ] = new Color( val ) );
};
return Color;
})();/**
* A tokenizer for CSS value strings.
* @constructor
* @param {string} css The CSS value string
*/
PIE.Tokenizer = (function() {
function Tokenizer( css ) {
this.css = css;
this.ch = 0;
this.tokens = [];
this.tokenIndex = 0;
}
/**
* Enumeration of token type constants.
* @enum {number}
*/
var Type = Tokenizer.Type = {
ANGLE: 1,
CHARACTER: 2,
COLOR: 4,
DIMEN: 8,
FUNCTION: 16,
IDENT: 32,
LENGTH: 64,
NUMBER: 128,
OPERATOR: 256,
PERCENT: 512,
STRING: 1024,
URL: 2048
};
/**
* A single token
* @constructor
* @param {number} type The type of the token - see PIE.Tokenizer.Type
* @param {string} value The value of the token
*/
Tokenizer.Token = function( type, value ) {
this.tokenType = type;
this.tokenValue = value;
};
Tokenizer.Token.prototype = {
isLength: function() {
return this.tokenType & Type.LENGTH || ( this.tokenType & Type.NUMBER && this.tokenValue === '0' );
},
isLengthOrPercent: function() {
return this.isLength() || this.tokenType & Type.PERCENT;
}
};
Tokenizer.prototype = {
whitespace: /\s/,
number: /^[\+\-]?(\d*\.)?\d+/,
url: /^url\(\s*("([^"]*)"|'([^']*)'|([!#$%&*-~]*))\s*\)/i,
ident: /^\-?[_a-z][\w-]*/i,
string: /^("([^"]*)"|'([^']*)')/,
operator: /^[\/,]/,
hash: /^#[\w]+/,
hashColor: /^#([\da-f]{6}|[\da-f]{3})/i,
unitTypes: {
'px': Type.LENGTH, 'em': Type.LENGTH, 'ex': Type.LENGTH,
'mm': Type.LENGTH, 'cm': Type.LENGTH, 'in': Type.LENGTH,
'pt': Type.LENGTH, 'pc': Type.LENGTH,
'deg': Type.ANGLE, 'rad': Type.ANGLE, 'grad': Type.ANGLE
},
colorFunctions: {
'rgb': 1, 'rgba': 1, 'hsl': 1, 'hsla': 1
},
/**
* Advance to and return the next token in the CSS string. If the end of the CSS string has
* been reached, null will be returned.
* @param {boolean} forget - if true, the token will not be stored for the purposes of backtracking with prev().
* @return {PIE.Tokenizer.Token}
*/
next: function( forget ) {
var css, ch, firstChar, match, val,
me = this;
function newToken( type, value ) {
var tok = new Tokenizer.Token( type, value );
if( !forget ) {
me.tokens.push( tok );
me.tokenIndex++;
}
return tok;
}
function failure() {
me.tokenIndex++;
return null;
}
// In case we previously backed up, return the stored token in the next slot
if( this.tokenIndex < this.tokens.length ) {
return this.tokens[ this.tokenIndex++ ];
}
// Move past leading whitespace characters
while( this.whitespace.test( this.css.charAt( this.ch ) ) ) {
this.ch++;
}
if( this.ch >= this.css.length ) {
return failure();
}
ch = this.ch;
css = this.css.substring( this.ch );
firstChar = css.charAt( 0 );
switch( firstChar ) {
case '#':
if( match = css.match( this.hashColor ) ) {
this.ch += match[0].length;
return newToken( Type.COLOR, match[0] );
}
break;
case '"':
case "'":
if( match = css.match( this.string ) ) {
this.ch += match[0].length;
return newToken( Type.STRING, match[2] || match[3] || '' );
}
break;
case "/":
case ",":
this.ch++;
return newToken( Type.OPERATOR, firstChar );
case 'u':
if( match = css.match( this.url ) ) {
this.ch += match[0].length;
return newToken( Type.URL, match[2] || match[3] || match[4] || '' );
}
}
// Numbers and values starting with numbers
if( match = css.match( this.number ) ) {
val = match[0];
this.ch += val.length;
// Check if it is followed by a unit
if( css.charAt( val.length ) === '%' ) {
this.ch++;
return newToken( Type.PERCENT, val + '%' );
}
if( match = css.substring( val.length ).match( this.ident ) ) {
val += match[0];
this.ch += match[0].length;
return newToken( this.unitTypes[ match[0].toLowerCase() ] || Type.DIMEN, val );
}
// Plain ol' number
return newToken( Type.NUMBER, val );
}
// Identifiers
if( match = css.match( this.ident ) ) {
val = match[0];
this.ch += val.length;
// Named colors
if( val.toLowerCase() in PIE.Color.names || val === 'currentColor' || val === 'transparent' ) {
return newToken( Type.COLOR, val );
}
// Functions
if( css.charAt( val.length ) === '(' ) {
this.ch++;
// Color values in function format: rgb, rgba, hsl, hsla
if( val.toLowerCase() in this.colorFunctions ) {
function isNum( tok ) {
return tok && tok.tokenType & Type.NUMBER;
}
function isNumOrPct( tok ) {
return tok && ( tok.tokenType & ( Type.NUMBER | Type.PERCENT ) );
}
function isValue( tok, val ) {
return tok && tok.tokenValue === val;
}
function next() {
return me.next( 1 );
}
if( ( val.charAt(0) === 'r' ? isNumOrPct( next() ) : isNum( next() ) ) &&
isValue( next(), ',' ) &&
isNumOrPct( next() ) &&
isValue( next(), ',' ) &&
isNumOrPct( next() ) &&
( val === 'rgb' || val === 'hsa' || (
isValue( next(), ',' ) &&
isNum( next() )
) ) &&
isValue( next(), ')' ) ) {
return newToken( Type.COLOR, this.css.substring( ch, this.ch ) );
}
return failure();
}
return newToken( Type.FUNCTION, val );
}
// Other identifier
return newToken( Type.IDENT, val );
}
// Standalone character
this.ch++;
return newToken( Type.CHARACTER, firstChar );
},
/**
* Determine whether there is another token
* @return {boolean}
*/
hasNext: function() {
var next = this.next();
this.prev();
return !!next;
},
/**
* Back up and return the previous token
* @return {PIE.Tokenizer.Token}
*/
prev: function() {
return this.tokens[ this.tokenIndex-- - 2 ];
},
/**
* Retrieve all the tokens in the CSS string
* @return {Array.<PIE.Tokenizer.Token>}
*/
all: function() {
while( this.next() ) {}
return this.tokens;
},
/**
* Return a list of tokens from the current position until the given function returns
* true. The final token will not be included in the list.
* @param {function():boolean} func - test function
* @param {boolean} require - if true, then if the end of the CSS string is reached
* before the test function returns true, null will be returned instead of the
* tokens that have been found so far.
* @return {Array.<PIE.Tokenizer.Token>}
*/
until: function( func, require ) {
var list = [], t, hit;
while( t = this.next() ) {
if( func( t ) ) {
hit = true;
this.prev();
break;
}
list.push( t );
}
return require && !hit ? null : list;
}
};
return Tokenizer;
})();/**
* Handles calculating, caching, and detecting changes to size and position of the element.
* @constructor
* @param {Element} el the target element
*/
PIE.BoundsInfo = function( el ) {
this.targetElement = el;
};
PIE.BoundsInfo.prototype = {
_locked: 0,
positionChanged: function() {
var last = this._lastBounds,
bounds;
return !last || ( ( bounds = this.getBounds() ) && ( last.x !== bounds.x || last.y !== bounds.y ) );
},
sizeChanged: function() {
var last = this._lastBounds,
bounds;
return !last || ( ( bounds = this.getBounds() ) && ( last.w !== bounds.w || last.h !== bounds.h ) );
},
getLiveBounds: function() {
var el = this.targetElement,
rect = el.getBoundingClientRect(),
isIE9 = PIE.ieDocMode === 9,
isIE7 = PIE.ieVersion === 7,
width = rect.right - rect.left;
return {
x: rect.left,
y: rect.top,
// In some cases scrolling the page will cause IE9 to report incorrect dimensions
// in the rect returned by getBoundingClientRect, so we must query offsetWidth/Height
// instead. Also IE7 is inconsistent in using logical vs. device pixels in measurements
// so we must calculate the ratio and use it in certain places as a position adjustment.
w: isIE9 || isIE7 ? el.offsetWidth : width,
h: isIE9 || isIE7 ? el.offsetHeight : rect.bottom - rect.top,
logicalZoomRatio: ( isIE7 && width ) ? el.offsetWidth / width : 1
};
},
getBounds: function() {
return this._locked ?
( this._lockedBounds || ( this._lockedBounds = this.getLiveBounds() ) ) :
this.getLiveBounds();
},
hasBeenQueried: function() {
return !!this._lastBounds;
},
lock: function() {
++this._locked;
},
unlock: function() {
if( !--this._locked ) {
if( this._lockedBounds ) this._lastBounds = this._lockedBounds;
this._lockedBounds = null;
}
}
};
(function() {
function cacheWhenLocked( fn ) {
var uid = PIE.Util.getUID( fn );
return function() {
if( this._locked ) {
var cache = this._lockedValues || ( this._lockedValues = {} );
return ( uid in cache ) ? cache[ uid ] : ( cache[ uid ] = fn.call( this ) );
} else {
return fn.call( this );
}
}
}
PIE.StyleInfoBase = {
_locked: 0,
/**
* Create a new StyleInfo class, with the standard constructor, and augmented by
* the StyleInfoBase's members.
* @param proto
*/
newStyleInfo: function( proto ) {
function StyleInfo( el ) {
this.targetElement = el;
this._lastCss = this.getCss();
}
PIE.Util.merge( StyleInfo.prototype, PIE.StyleInfoBase, proto );
StyleInfo._propsCache = {};
return StyleInfo;
},
/**
* Get an object representation of the target CSS style, caching it for each unique
* CSS value string.
* @return {Object}
*/
getProps: function() {
var css = this.getCss(),
cache = this.constructor._propsCache;
return css ? ( css in cache ? cache[ css ] : ( cache[ css ] = this.parseCss( css ) ) ) : null;
},
/**
* Get the raw CSS value for the target style
* @return {string}
*/
getCss: cacheWhenLocked( function() {
var el = this.targetElement,
ctor = this.constructor,
s = el.style,
cs = el.currentStyle,
cssProp = this.cssProperty,
styleProp = this.styleProperty,
prefixedCssProp = ctor._prefixedCssProp || ( ctor._prefixedCssProp = PIE.CSS_PREFIX + cssProp ),
prefixedStyleProp = ctor._prefixedStyleProp || ( ctor._prefixedStyleProp = PIE.STYLE_PREFIX + styleProp.charAt(0).toUpperCase() + styleProp.substring(1) );
return s[ prefixedStyleProp ] || cs.getAttribute( prefixedCssProp ) || s[ styleProp ] || cs.getAttribute( cssProp );
} ),
/**
* Determine whether the target CSS style is active.
* @return {boolean}
*/
isActive: cacheWhenLocked( function() {
return !!this.getProps();
} ),
/**
* Determine whether the target CSS style has changed since the last time it was used.
* @return {boolean}
*/
changed: cacheWhenLocked( function() {
var currentCss = this.getCss(),
changed = currentCss !== this._lastCss;
this._lastCss = currentCss;
return changed;
} ),
cacheWhenLocked: cacheWhenLocked,
lock: function() {
++this._locked;
},
unlock: function() {
if( !--this._locked ) {
delete this._lockedValues;
}
}
};
})();/**
* Handles parsing, caching, and detecting changes to background (and -pie-background) CSS
* @constructor
* @param {Element} el the target element
*/
PIE.BackgroundStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
cssProperty: PIE.CSS_PREFIX + 'background',
styleProperty: PIE.STYLE_PREFIX + 'Background',
attachIdents: { 'scroll':1, 'fixed':1, 'local':1 },
repeatIdents: { 'repeat-x':1, 'repeat-y':1, 'repeat':1, 'no-repeat':1 },
originAndClipIdents: { 'padding-box':1, 'border-box':1, 'content-box':1 },
positionIdents: { 'top':1, 'right':1, 'bottom':1, 'left':1, 'center':1 },
sizeIdents: { 'contain':1, 'cover':1 },
propertyNames: {
CLIP: 'backgroundClip',
COLOR: 'backgroundColor',
IMAGE: 'backgroundImage',
ORIGIN: 'backgroundOrigin',
POSITION: 'backgroundPosition',
REPEAT: 'backgroundRepeat',
SIZE: 'backgroundSize'
},
/**
* For background styles, we support the -pie-background property but fall back to the standard
* backround* properties. The reason we have to use the prefixed version is that IE natively
* parses the standard properties and if it sees something it doesn't know how to parse, for example
* multiple values or gradient definitions, it will throw that away and not make it available through
* currentStyle.
*
* Format of return object:
* {
* color: <PIE.Color>,
* bgImages: [
* {
* imgType: 'image',
* imgUrl: 'image.png',
* imgRepeat: <'no-repeat' | 'repeat-x' | 'repeat-y' | 'repeat'>,
* bgPosition: <PIE.BgPosition>,
* bgAttachment: <'scroll' | 'fixed' | 'local'>,
* bgOrigin: <'border-box' | 'padding-box' | 'content-box'>,
* bgClip: <'border-box' | 'padding-box'>,
* bgSize: <PIE.BgSize>,
* origString: 'url(img.png) no-repeat top left'
* },
* {
* imgType: 'linear-gradient',
* gradientStart: <PIE.BgPosition>,
* angle: <PIE.Angle>,
* stops: [
* { color: <PIE.Color>, offset: <PIE.Length> },
* { color: <PIE.Color>, offset: <PIE.Length> }, ...
* ]
* }
* ]
* }
* @param {String} css
* @override
*/
parseCss: function( css ) {
var el = this.targetElement,
cs = el.currentStyle,
tokenizer, token, image,
tok_type = PIE.Tokenizer.Type,
type_operator = tok_type.OPERATOR,
type_ident = tok_type.IDENT,
type_color = tok_type.COLOR,
tokType, tokVal,
beginCharIndex = 0,
positionIdents = this.positionIdents,
gradient, stop, width, height,
props = { bgImages: [] };
function isBgPosToken( token ) {
return token && token.isLengthOrPercent() || ( token.tokenType & type_ident && token.tokenValue in positionIdents );
}
function sizeToken( token ) {
return token && ( ( token.isLengthOrPercent() && PIE.getLength( token.tokenValue ) ) || ( token.tokenValue === 'auto' && 'auto' ) );
}
// If the CSS3-specific -pie-background property is present, parse it
if( this.getCss3() ) {
tokenizer = new PIE.Tokenizer( css );
image = {};
while( token = tokenizer.next() ) {
tokType = token.tokenType;
tokVal = token.tokenValue;
if( !image.imgType && tokType & tok_type.FUNCTION && tokVal === 'linear-gradient' ) {
gradient = { stops: [], imgType: tokVal };
stop = {};
while( token = tokenizer.next() ) {
tokType = token.tokenType;
tokVal = token.tokenValue;
// If we reached the end of the function and had at least 2 stops, flush the info
if( tokType & tok_type.CHARACTER && tokVal === ')' ) {
if( stop.color ) {
gradient.stops.push( stop );
}
if( gradient.stops.length > 1 ) {
PIE.Util.merge( image, gradient );
}
break;
}
// Color stop - must start with color
if( tokType & type_color ) {
// if we already have an angle/position, make sure that the previous token was a comma
if( gradient.angle || gradient.gradientStart ) {
token = tokenizer.prev();
if( token.tokenType !== type_operator ) {
break; //fail
}
tokenizer.next();
}
stop = {
color: PIE.getColor( tokVal )
};
// check for offset following color
token = tokenizer.next();
if( token.isLengthOrPercent() ) {
stop.offset = PIE.getLength( token.tokenValue );
} else {
tokenizer.prev();
}
}
// Angle - can only appear in first spot
else if( tokType & tok_type.ANGLE && !gradient.angle && !stop.color && !gradient.stops.length ) {
gradient.angle = new PIE.Angle( token.tokenValue );
}
else if( isBgPosToken( token ) && !gradient.gradientStart && !stop.color && !gradient.stops.length ) {
tokenizer.prev();
gradient.gradientStart = new PIE.BgPosition(
tokenizer.until( function( t ) {
return !isBgPosToken( t );
}, false )
);
}
else if( tokType & type_operator && tokVal === ',' ) {
if( stop.color ) {
gradient.stops.push( stop );
stop = {};
}
}
else {
// Found something we didn't recognize; fail without adding image
break;
}
}
}
else if( !image.imgType && tokType & tok_type.URL ) {
image.imgUrl = tokVal;
image.imgType = 'image';
}
else if( isBgPosToken( token ) && !image.bgPosition ) {
tokenizer.prev();
image.bgPosition = new PIE.BgPosition(
tokenizer.until( function( t ) {
return !isBgPosToken( t );
}, false )
);
}
else if( tokType & type_ident ) {
if( tokVal in this.repeatIdents && !image.imgRepeat ) {
image.imgRepeat = tokVal;
}
else if( tokVal in this.originAndClipIdents && !image.bgOrigin ) {
image.bgOrigin = tokVal;
if( ( token = tokenizer.next() ) && ( token.tokenType & type_ident ) &&
token.tokenValue in this.originAndClipIdents ) {
image.bgClip = token.tokenValue;
} else {
image.bgClip = tokVal;
tokenizer.prev();
}
}
else if( tokVal in this.attachIdents && !image.bgAttachment ) {
image.bgAttachment = tokVal;
}
else {
return null;
}
}
else if( tokType & type_color && !props.color ) {
props.color = PIE.getColor( tokVal );
}
else if( tokType & type_operator && tokVal === '/' && !image.bgSize && image.bgPosition ) {
// background size
token = tokenizer.next();
if( token.tokenType & type_ident && token.tokenValue in this.sizeIdents ) {
image.bgSize = new PIE.BgSize( token.tokenValue );
}
else if( width = sizeToken( token ) ) {
height = sizeToken( tokenizer.next() );
if ( !height ) {
height = width;
tokenizer.prev();
}
image.bgSize = new PIE.BgSize( width, height );
}
else {
return null;
}
}
// new layer
else if( tokType & type_operator && tokVal === ',' && image.imgType ) {
image.origString = css.substring( beginCharIndex, tokenizer.ch - 1 );
beginCharIndex = tokenizer.ch;
props.bgImages.push( image );
image = {};
}
else {
// Found something unrecognized; chuck everything
return null;
}
}
// leftovers
if( image.imgType ) {
image.origString = css.substring( beginCharIndex );
props.bgImages.push( image );
}
}
// Otherwise, use the standard background properties; let IE give us the values rather than parsing them
else {
this.withActualBg( PIE.ieDocMode < 9 ?
function() {
var propNames = this.propertyNames,
posX = cs[propNames.POSITION + 'X'],
posY = cs[propNames.POSITION + 'Y'],
img = cs[propNames.IMAGE],
color = cs[propNames.COLOR];
if( color !== 'transparent' ) {
props.color = PIE.getColor( color )
}
if( img !== 'none' ) {
props.bgImages = [ {
imgType: 'image',
imgUrl: new PIE.Tokenizer( img ).next().tokenValue,
imgRepeat: cs[propNames.REPEAT],
bgPosition: new PIE.BgPosition( new PIE.Tokenizer( posX + ' ' + posY ).all() )
} ];
}
} :
function() {
var propNames = this.propertyNames,
splitter = /\s*,\s*/,
images = cs[propNames.IMAGE].split( splitter ),
color = cs[propNames.COLOR],
repeats, positions, origins, clips, sizes, i, len, image, sizeParts;
if( color !== 'transparent' ) {
props.color = PIE.getColor( color )
}
len = images.length;
if( len && images[0] !== 'none' ) {
repeats = cs[propNames.REPEAT].split( splitter );
positions = cs[propNames.POSITION].split( splitter );
origins = cs[propNames.ORIGIN].split( splitter );
clips = cs[propNames.CLIP].split( splitter );
sizes = cs[propNames.SIZE].split( splitter );
props.bgImages = [];
for( i = 0; i < len; i++ ) {
image = images[ i ];
if( image && image !== 'none' ) {
sizeParts = sizes[i].split( ' ' );
props.bgImages.push( {
origString: image + ' ' + repeats[ i ] + ' ' + positions[ i ] + ' / ' + sizes[ i ] + ' ' +
origins[ i ] + ' ' + clips[ i ],
imgType: 'image',
imgUrl: new PIE.Tokenizer( image ).next().tokenValue,
imgRepeat: repeats[ i ],
bgPosition: new PIE.BgPosition( new PIE.Tokenizer( positions[ i ] ).all() ),
bgOrigin: origins[ i ],
bgClip: clips[ i ],
bgSize: new PIE.BgSize( sizeParts[ 0 ], sizeParts[ 1 ] )
} );
}
}
}
}
);
}
return ( props.color || props.bgImages[0] ) ? props : null;
},
/**
* Execute a function with the actual background styles (not overridden with runtimeStyle
* properties set by the renderers) available via currentStyle.
* @param fn
*/
withActualBg: function( fn ) {
var isIE9 = PIE.ieDocMode > 8,
propNames = this.propertyNames,
rs = this.targetElement.runtimeStyle,
rsImage = rs[propNames.IMAGE],
rsColor = rs[propNames.COLOR],
rsRepeat = rs[propNames.REPEAT],
rsClip, rsOrigin, rsSize, rsPosition, ret;
if( rsImage ) rs[propNames.IMAGE] = '';
if( rsColor ) rs[propNames.COLOR] = '';
if( rsRepeat ) rs[propNames.REPEAT] = '';
if( isIE9 ) {
rsClip = rs[propNames.CLIP];
rsOrigin = rs[propNames.ORIGIN];
rsPosition = rs[propNames.POSITION];
rsSize = rs[propNames.SIZE];
if( rsClip ) rs[propNames.CLIP] = '';
if( rsOrigin ) rs[propNames.ORIGIN] = '';
if( rsPosition ) rs[propNames.POSITION] = '';
if( rsSize ) rs[propNames.SIZE] = '';
}
ret = fn.call( this );
if( rsImage ) rs[propNames.IMAGE] = rsImage;
if( rsColor ) rs[propNames.COLOR] = rsColor;
if( rsRepeat ) rs[propNames.REPEAT] = rsRepeat;
if( isIE9 ) {
if( rsClip ) rs[propNames.CLIP] = rsClip;
if( rsOrigin ) rs[propNames.ORIGIN] = rsOrigin;
if( rsPosition ) rs[propNames.POSITION] = rsPosition;
if( rsSize ) rs[propNames.SIZE] = rsSize;
}
return ret;
},
getCss: PIE.StyleInfoBase.cacheWhenLocked( function() {
return this.getCss3() ||
this.withActualBg( function() {
var cs = this.targetElement.currentStyle,
propNames = this.propertyNames;
return cs[propNames.COLOR] + ' ' + cs[propNames.IMAGE] + ' ' + cs[propNames.REPEAT] + ' ' +
cs[propNames.POSITION + 'X'] + ' ' + cs[propNames.POSITION + 'Y'];
} );
} ),
getCss3: PIE.StyleInfoBase.cacheWhenLocked( function() {
var el = this.targetElement;
return el.style[ this.styleProperty ] || el.currentStyle.getAttribute( this.cssProperty );
} ),
/**
* Tests if style.PiePngFix or the -pie-png-fix property is set to true in IE6.
*/
isPngFix: function() {
var val = 0, el;
if( PIE.ieVersion < 7 ) {
el = this.targetElement;
val = ( '' + ( el.style[ PIE.STYLE_PREFIX + 'PngFix' ] || el.currentStyle.getAttribute( PIE.CSS_PREFIX + 'png-fix' ) ) === 'true' );
}
return val;
},
/**
* The isActive logic is slightly different, because getProps() always returns an object
* even if it is just falling back to the native background properties. But we only want
* to report is as being "active" if either the -pie-background override property is present
* and parses successfully or '-pie-png-fix' is set to true in IE6.
*/
isActive: PIE.StyleInfoBase.cacheWhenLocked( function() {
return (this.getCss3() || this.isPngFix()) && !!this.getProps();
} )
} );/**
* Handles parsing, caching, and detecting changes to border CSS
* @constructor
* @param {Element} el the target element
*/
PIE.BorderStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
sides: [ 'Top', 'Right', 'Bottom', 'Left' ],
namedWidths: {
'thin': '1px',
'medium': '3px',
'thick': '5px'
},
parseCss: function( css ) {
var w = {},
s = {},
c = {},
active = false,
colorsSame = true,
stylesSame = true,
widthsSame = true;
this.withActualBorder( function() {
var el = this.targetElement,
cs = el.currentStyle,
i = 0,
style, color, width, lastStyle, lastColor, lastWidth, side, ltr;
for( ; i < 4; i++ ) {
side = this.sides[ i ];
ltr = side.charAt(0).toLowerCase();
style = s[ ltr ] = cs[ 'border' + side + 'Style' ];
color = cs[ 'border' + side + 'Color' ];
width = cs[ 'border' + side + 'Width' ];
if( i > 0 ) {
if( style !== lastStyle ) { stylesSame = false; }
if( color !== lastColor ) { colorsSame = false; }
if( width !== lastWidth ) { widthsSame = false; }
}
lastStyle = style;
lastColor = color;
lastWidth = width;
c[ ltr ] = PIE.getColor( color );
width = w[ ltr ] = PIE.getLength( s[ ltr ] === 'none' ? '0' : ( this.namedWidths[ width ] || width ) );
if( width.pixels( this.targetElement ) > 0 ) {
active = true;
}
}
} );
return active ? {
widths: w,
styles: s,
colors: c,
widthsSame: widthsSame,
colorsSame: colorsSame,
stylesSame: stylesSame
} : null;
},
getCss: PIE.StyleInfoBase.cacheWhenLocked( function() {
var el = this.targetElement,
cs = el.currentStyle,
css;
// Don't redraw or hide borders for cells in border-collapse:collapse tables
if( !( el.tagName in PIE.tableCellTags && el.offsetParent.currentStyle.borderCollapse === 'collapse' ) ) {
this.withActualBorder( function() {
css = cs.borderWidth + '|' + cs.borderStyle + '|' + cs.borderColor;
} );
}
return css;
} ),
/**
* Execute a function with the actual border styles (not overridden with runtimeStyle
* properties set by the renderers) available via currentStyle.
* @param fn
*/
withActualBorder: function( fn ) {
var rs = this.targetElement.runtimeStyle,
rsWidth = rs.borderWidth,
rsColor = rs.borderColor,
ret;
if( rsWidth ) rs.borderWidth = '';
if( rsColor ) rs.borderColor = '';
ret = fn.call( this );
if( rsWidth ) rs.borderWidth = rsWidth;
if( rsColor ) rs.borderColor = rsColor;
return ret;
}
} );
/**
* Handles parsing, caching, and detecting changes to border-radius CSS
* @constructor
* @param {Element} el the target element
*/
(function() {
PIE.BorderRadiusStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
cssProperty: 'border-radius',
styleProperty: 'borderRadius',
parseCss: function( css ) {
var p = null, x, y,
tokenizer, token, length,
hasNonZero = false;
if( css ) {
tokenizer = new PIE.Tokenizer( css );
function collectLengths() {
var arr = [], num;
while( ( token = tokenizer.next() ) && token.isLengthOrPercent() ) {
length = PIE.getLength( token.tokenValue );
num = length.getNumber();
if( num < 0 ) {
return null;
}
if( num > 0 ) {
hasNonZero = true;
}
arr.push( length );
}
return arr.length > 0 && arr.length < 5 ? {
'tl': arr[0],
'tr': arr[1] || arr[0],
'br': arr[2] || arr[0],
'bl': arr[3] || arr[1] || arr[0]
} : null;
}
// Grab the initial sequence of lengths
if( x = collectLengths() ) {
// See if there is a slash followed by more lengths, for the y-axis radii
if( token ) {
if( token.tokenType & PIE.Tokenizer.Type.OPERATOR && token.tokenValue === '/' ) {
y = collectLengths();
}
} else {
y = x;
}
// Treat all-zero values the same as no value
if( hasNonZero && x && y ) {
p = { x: x, y : y };
}
}
}
return p;
}
} );
var zero = PIE.getLength( '0' ),
zeros = { 'tl': zero, 'tr': zero, 'br': zero, 'bl': zero };
PIE.BorderRadiusStyleInfo.ALL_ZERO = { x: zeros, y: zeros };
})();/**
* Handles parsing, caching, and detecting changes to border-image CSS
* @constructor
* @param {Element} el the target element
*/
PIE.BorderImageStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
cssProperty: 'border-image',
styleProperty: 'borderImage',
repeatIdents: { 'stretch':1, 'round':1, 'repeat':1, 'space':1 },
parseCss: function( css ) {
var p = null, tokenizer, token, type, value,
slices, widths, outsets,
slashCount = 0,
Type = PIE.Tokenizer.Type,
IDENT = Type.IDENT,
NUMBER = Type.NUMBER,
PERCENT = Type.PERCENT;
if( css ) {
tokenizer = new PIE.Tokenizer( css );
p = {};
function isSlash( token ) {
return token && ( token.tokenType & Type.OPERATOR ) && ( token.tokenValue === '/' );
}
function isFillIdent( token ) {
return token && ( token.tokenType & IDENT ) && ( token.tokenValue === 'fill' );
}
function collectSlicesEtc() {
slices = tokenizer.until( function( tok ) {
return !( tok.tokenType & ( NUMBER | PERCENT ) );
} );
if( isFillIdent( tokenizer.next() ) && !p.fill ) {
p.fill = true;
} else {
tokenizer.prev();
}
if( isSlash( tokenizer.next() ) ) {
slashCount++;
widths = tokenizer.until( function( token ) {
return !token.isLengthOrPercent() && !( ( token.tokenType & IDENT ) && token.tokenValue === 'auto' );
} );
if( isSlash( tokenizer.next() ) ) {
slashCount++;
outsets = tokenizer.until( function( token ) {
return !token.isLength();
} );
}
} else {
tokenizer.prev();
}
}
while( token = tokenizer.next() ) {
type = token.tokenType;
value = token.tokenValue;
// Numbers and/or 'fill' keyword: slice values. May be followed optionally by width values, followed optionally by outset values
if( type & ( NUMBER | PERCENT ) && !slices ) {
tokenizer.prev();
collectSlicesEtc();
}
else if( isFillIdent( token ) && !p.fill ) {
p.fill = true;
collectSlicesEtc();
}
// Idents: one or values for 'repeat'
else if( ( type & IDENT ) && this.repeatIdents[value] && !p.repeat ) {
p.repeat = { h: value };
if( token = tokenizer.next() ) {
if( ( token.tokenType & IDENT ) && this.repeatIdents[token.tokenValue] ) {
p.repeat.v = token.tokenValue;
} else {
tokenizer.prev();
}
}
}
// URL of the image
else if( ( type & Type.URL ) && !p.src ) {
p.src = value;
}
// Found something unrecognized; exit.
else {
return null;
}
}
// Validate what we collected
if( !p.src || !slices || slices.length < 1 || slices.length > 4 ||
( widths && widths.length > 4 ) || ( slashCount === 1 && widths.length < 1 ) ||
( outsets && outsets.length > 4 ) || ( slashCount === 2 && outsets.length < 1 ) ) {
return null;
}
// Fill in missing values
if( !p.repeat ) {
p.repeat = { h: 'stretch' };
}
if( !p.repeat.v ) {
p.repeat.v = p.repeat.h;
}
function distributeSides( tokens, convertFn ) {
return {
't': convertFn( tokens[0] ),
'r': convertFn( tokens[1] || tokens[0] ),
'b': convertFn( tokens[2] || tokens[0] ),
'l': convertFn( tokens[3] || tokens[1] || tokens[0] )
};
}
p.slice = distributeSides( slices, function( tok ) {
return PIE.getLength( ( tok.tokenType & NUMBER ) ? tok.tokenValue + 'px' : tok.tokenValue );
} );
if( widths && widths[0] ) {
p.widths = distributeSides( widths, function( tok ) {
return tok.isLengthOrPercent() ? PIE.getLength( tok.tokenValue ) : tok.tokenValue;
} );
}
if( outsets && outsets[0] ) {
p.outset = distributeSides( outsets, function( tok ) {
return tok.isLength() ? PIE.getLength( tok.tokenValue ) : tok.tokenValue;
} );
}
}
return p;
}
} );/**
* Handles parsing, caching, and detecting changes to box-shadow CSS
* @constructor
* @param {Element} el the target element
*/
PIE.BoxShadowStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
cssProperty: 'box-shadow',
styleProperty: 'boxShadow',
parseCss: function( css ) {
var props,
getLength = PIE.getLength,
Type = PIE.Tokenizer.Type,
tokenizer;
if( css ) {
tokenizer = new PIE.Tokenizer( css );
props = { outset: [], inset: [] };
function parseItem() {
var token, type, value, color, lengths, inset, len;
while( token = tokenizer.next() ) {
value = token.tokenValue;
type = token.tokenType;
if( type & Type.OPERATOR && value === ',' ) {
break;
}
else if( token.isLength() && !lengths ) {
tokenizer.prev();
lengths = tokenizer.until( function( token ) {
return !token.isLength();
} );
}
else if( type & Type.COLOR && !color ) {
color = value;
}
else if( type & Type.IDENT && value === 'inset' && !inset ) {
inset = true;
}
else { //encountered an unrecognized token; fail.
return false;
}
}
len = lengths && lengths.length;
if( len > 1 && len < 5 ) {
( inset ? props.inset : props.outset ).push( {
xOffset: getLength( lengths[0].tokenValue ),
yOffset: getLength( lengths[1].tokenValue ),
blur: getLength( lengths[2] ? lengths[2].tokenValue : '0' ),
spread: getLength( lengths[3] ? lengths[3].tokenValue : '0' ),
color: PIE.getColor( color || 'currentColor' )
} );
return true;
}
return false;
}
while( parseItem() ) {}
}
return props && ( props.inset.length || props.outset.length ) ? props : null;
}
} );
/**
* Retrieves the state of the element's visibility and display
* @constructor
* @param {Element} el the target element
*/
PIE.VisibilityStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
getCss: PIE.StyleInfoBase.cacheWhenLocked( function() {
var cs = this.targetElement.currentStyle;
return cs.visibility + '|' + cs.display;
} ),
parseCss: function() {
var el = this.targetElement,
rs = el.runtimeStyle,
cs = el.currentStyle,
rsVis = rs.visibility,
csVis;
rs.visibility = '';
csVis = cs.visibility;
rs.visibility = rsVis;
return {
visible: csVis !== 'hidden',
displayed: cs.display !== 'none'
}
},
/**
* Always return false for isActive, since this property alone will not trigger
* a renderer to do anything.
*/
isActive: function() {
return false;
}
} );
PIE.RendererBase = {
/**
* Create a new Renderer class, with the standard constructor, and augmented by
* the RendererBase's members.
* @param proto
*/
newRenderer: function( proto ) {
function Renderer( el, boundsInfo, styleInfos, parent ) {
this.targetElement = el;
this.boundsInfo = boundsInfo;
this.styleInfos = styleInfos;
this.parent = parent;
}
PIE.Util.merge( Renderer.prototype, PIE.RendererBase, proto );
return Renderer;
},
/**
* Flag indicating the element has already been positioned at least once.
* @type {boolean}
*/
isPositioned: false,
/**
* Determine if the renderer needs to be updated
* @return {boolean}
*/
needsUpdate: function() {
return false;
},
/**
* Run any preparation logic that would affect the main update logic of this
* renderer or any of the other renderers, e.g. things that might affect the
* element's size or style properties.
*/
prepareUpdate: PIE.emptyFn,
/**
* Tell the renderer to update based on modified properties
*/
updateProps: function() {
this.destroy();
if( this.isActive() ) {
this.draw();
}
},
/**
* Tell the renderer to update based on modified element position
*/
updatePos: function() {
this.isPositioned = true;
},
/**
* Tell the renderer to update based on modified element dimensions
*/
updateSize: function() {
if( this.isActive() ) {
this.draw();
} else {
this.destroy();
}
},
/**
* Add a layer element, with the given z-order index, to the renderer's main box element. We can't use
* z-index because that breaks when the root rendering box's z-index is 'auto' in IE8+ standards mode.
* So instead we make sure they are inserted into the DOM in the correct order.
* @param {number} index
* @param {Element} el
*/
addLayer: function( index, el ) {
this.removeLayer( index );
for( var layers = this._layers || ( this._layers = [] ), i = index + 1, len = layers.length, layer; i < len; i++ ) {
layer = layers[i];
if( layer ) {
break;
}
}
layers[index] = el;
this.getBox().insertBefore( el, layer || null );
},
/**
* Retrieve a layer element by its index, or null if not present
* @param {number} index
* @return {Element}
*/
getLayer: function( index ) {
var layers = this._layers;
return layers && layers[index] || null;
},
/**
* Remove a layer element by its index
* @param {number} index
*/
removeLayer: function( index ) {
var layer = this.getLayer( index ),
box = this._box;
if( layer && box ) {
box.removeChild( layer );
this._layers[index] = null;
}
},
/**
* Get a VML shape by name, creating it if necessary.
* @param {string} name A name identifying the element
* @param {string=} subElName If specified a subelement of the shape will be created with this tag name
* @param {Element} parent The parent element for the shape; will be ignored if 'group' is specified
* @param {number=} group If specified, an ordinal group for the shape. 1 or greater. Groups are rendered
* using container elements in the correct order, to get correct z stacking without z-index.
*/
getShape: function( name, subElName, parent, group ) {
var shapes = this._shapes || ( this._shapes = {} ),
shape = shapes[ name ],
s;
if( !shape ) {
shape = shapes[ name ] = PIE.Util.createVmlElement( 'shape' );
if( subElName ) {
shape.appendChild( shape[ subElName ] = PIE.Util.createVmlElement( subElName ) );
}
if( group ) {
parent = this.getLayer( group );
if( !parent ) {
this.addLayer( group, doc.createElement( 'group' + group ) );
parent = this.getLayer( group );
}
}
parent.appendChild( shape );
s = shape.style;
s.position = 'absolute';
s.left = s.top = 0;
s['behavior'] = 'url(#default#VML)';
}
return shape;
},
/**
* Delete a named shape which was created by getShape(). Returns true if a shape with the
* given name was found and deleted, or false if there was no shape of that name.
* @param {string} name
* @return {boolean}
*/
deleteShape: function( name ) {
var shapes = this._shapes,
shape = shapes && shapes[ name ];
if( shape ) {
shape.parentNode.removeChild( shape );
delete shapes[ name ];
}
return !!shape;
},
/**
* For a given set of border radius length/percentage values, convert them to concrete pixel
* values based on the current size of the target element.
* @param {Object} radii
* @return {Object}
*/
getRadiiPixels: function( radii ) {
var el = this.targetElement,
bounds = this.boundsInfo.getBounds(),
w = bounds.w,
h = bounds.h,
tlX, tlY, trX, trY, brX, brY, blX, blY, f;
tlX = radii.x['tl'].pixels( el, w );
tlY = radii.y['tl'].pixels( el, h );
trX = radii.x['tr'].pixels( el, w );
trY = radii.y['tr'].pixels( el, h );
brX = radii.x['br'].pixels( el, w );
brY = radii.y['br'].pixels( el, h );
blX = radii.x['bl'].pixels( el, w );
blY = radii.y['bl'].pixels( el, h );
// If any corner ellipses overlap, reduce them all by the appropriate factor. This formula
// is taken straight from the CSS3 Backgrounds and Borders spec.
f = Math.min(
w / ( tlX + trX ),
h / ( trY + brY ),
w / ( blX + brX ),
h / ( tlY + blY )
);
if( f < 1 ) {
tlX *= f;
tlY *= f;
trX *= f;
trY *= f;
brX *= f;
brY *= f;
blX *= f;
blY *= f;
}
return {
x: {
'tl': tlX,
'tr': trX,
'br': brX,
'bl': blX
},
y: {
'tl': tlY,
'tr': trY,
'br': brY,
'bl': blY
}
}
},
/**
* Return the VML path string for the element's background box, with corners rounded.
* @param {Object.<{t:number, r:number, b:number, l:number}>} shrink - if present, specifies number of
* pixels to shrink the box path inward from the element's four sides.
* @param {number=} mult If specified, all coordinates will be multiplied by this number
* @param {Object=} radii If specified, this will be used for the corner radii instead of the properties
* from this renderer's borderRadiusInfo object.
* @return {string} the VML path
*/
getBoxPath: function( shrink, mult, radii ) {
mult = mult || 1;
var r, str,
bounds = this.boundsInfo.getBounds(),
w = bounds.w * mult,
h = bounds.h * mult,
radInfo = this.styleInfos.borderRadiusInfo,
floor = Math.floor, ceil = Math.ceil,
shrinkT = shrink ? shrink.t * mult : 0,
shrinkR = shrink ? shrink.r * mult : 0,
shrinkB = shrink ? shrink.b * mult : 0,
shrinkL = shrink ? shrink.l * mult : 0,
tlX, tlY, trX, trY, brX, brY, blX, blY;
if( radii || radInfo.isActive() ) {
r = this.getRadiiPixels( radii || radInfo.getProps() );
tlX = r.x['tl'] * mult;
tlY = r.y['tl'] * mult;
trX = r.x['tr'] * mult;
trY = r.y['tr'] * mult;
brX = r.x['br'] * mult;
brY = r.y['br'] * mult;
blX = r.x['bl'] * mult;
blY = r.y['bl'] * mult;
str = 'm' + floor( shrinkL ) + ',' + floor( tlY ) +
'qy' + floor( tlX ) + ',' + floor( shrinkT ) +
'l' + ceil( w - trX ) + ',' + floor( shrinkT ) +
'qx' + ceil( w - shrinkR ) + ',' + floor( trY ) +
'l' + ceil( w - shrinkR ) + ',' + ceil( h - brY ) +
'qy' + ceil( w - brX ) + ',' + ceil( h - shrinkB ) +
'l' + floor( blX ) + ',' + ceil( h - shrinkB ) +
'qx' + floor( shrinkL ) + ',' + ceil( h - blY ) + ' x e';
} else {
// simplified path for non-rounded box
str = 'm' + floor( shrinkL ) + ',' + floor( shrinkT ) +
'l' + ceil( w - shrinkR ) + ',' + floor( shrinkT ) +
'l' + ceil( w - shrinkR ) + ',' + ceil( h - shrinkB ) +
'l' + floor( shrinkL ) + ',' + ceil( h - shrinkB ) +
'xe';
}
return str;
},
/**
* Get the container element for the shapes, creating it if necessary.
*/
getBox: function() {
var box = this.parent.getLayer( this.boxZIndex ), s;
if( !box ) {
box = doc.createElement( this.boxName );
s = box.style;
s.position = 'absolute';
s.top = s.left = 0;
this.parent.addLayer( this.boxZIndex, box );
}
return box;
},
/**
* Hide the actual border of the element. In IE7 and up we can just set its color to transparent;
* however IE6 does not support transparent borders so we have to get tricky with it. Also, some elements
* like form buttons require removing the border width altogether, so for those we increase the padding
* by the border size.
*/
hideBorder: function() {
var el = this.targetElement,
cs = el.currentStyle,
rs = el.runtimeStyle,
tag = el.tagName,
isIE6 = PIE.ieVersion === 6,
sides, side, i;
if( ( isIE6 && ( tag in PIE.childlessElements || tag === 'FIELDSET' ) ) ||
tag === 'BUTTON' || ( tag === 'INPUT' && el.type in PIE.inputButtonTypes ) ) {
rs.borderWidth = '';
sides = this.styleInfos.borderInfo.sides;
for( i = sides.length; i--; ) {
side = sides[ i ];
rs[ 'padding' + side ] = '';
rs[ 'padding' + side ] = ( PIE.getLength( cs[ 'padding' + side ] ) ).pixels( el ) +
( PIE.getLength( cs[ 'border' + side + 'Width' ] ) ).pixels( el ) +
( PIE.ieVersion !== 8 && i % 2 ? 1 : 0 ); //needs an extra horizontal pixel to counteract the extra "inner border" going away
}
rs.borderWidth = 0;
}
else if( isIE6 ) {
// Wrap all the element's children in a custom element, set the element to visiblity:hidden,
// and set the wrapper element to visiblity:visible. This hides the outer element's decorations
// (background and border) but displays all the contents.
// TODO find a better way to do this that doesn't mess up the DOM parent-child relationship,
// as this can interfere with other author scripts which add/modify/delete children. Also, this
// won't work for elements which cannot take children, e.g. input/button/textarea/img/etc. Look into
// using a compositor filter or some other filter which masks the border.
if( el.childNodes.length !== 1 || el.firstChild.tagName !== 'ie6-mask' ) {
var cont = doc.createElement( 'ie6-mask' ),
s = cont.style, child;
s.visibility = 'visible';
s.zoom = 1;
while( child = el.firstChild ) {
cont.appendChild( child );
}
el.appendChild( cont );
rs.visibility = 'hidden';
}
}
else {
rs.borderColor = 'transparent';
}
},
unhideBorder: function() {
},
/**
* Destroy the rendered objects. This is a base implementation which handles common renderer
* structures, but individual renderers may override as necessary.
*/
destroy: function() {
this.parent.removeLayer( this.boxZIndex );
delete this._shapes;
delete this._layers;
}
};
/**
* Root renderer; creates the outermost container element and handles keeping it aligned
* with the target element's size and position.
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
*/
PIE.RootRenderer = PIE.RendererBase.newRenderer( {
isActive: function() {
var children = this.childRenderers;
for( var i in children ) {
if( children.hasOwnProperty( i ) && children[ i ].isActive() ) {
return true;
}
}
return false;
},
needsUpdate: function() {
return this.styleInfos.visibilityInfo.changed();
},
updatePos: function() {
if( this.isActive() ) {
var el = this.getPositioningElement(),
par = el,
docEl,
parRect,
tgtCS = el.currentStyle,
tgtPos = tgtCS.position,
boxPos,
s = this.getBox().style, cs,
x = 0, y = 0,
elBounds = this.boundsInfo.getBounds(),
logicalZoomRatio = elBounds.logicalZoomRatio;
if( tgtPos === 'fixed' && PIE.ieVersion > 6 ) {
x = elBounds.x * logicalZoomRatio;
y = elBounds.y * logicalZoomRatio;
boxPos = tgtPos;
} else {
// Get the element's offsets from its nearest positioned ancestor. Uses
// getBoundingClientRect for accuracy and speed.
do {
par = par.offsetParent;
} while( par && ( par.currentStyle.position === 'static' ) );
if( par ) {
parRect = par.getBoundingClientRect();
cs = par.currentStyle;
x = ( elBounds.x - parRect.left ) * logicalZoomRatio - ( parseFloat(cs.borderLeftWidth) || 0 );
y = ( elBounds.y - parRect.top ) * logicalZoomRatio - ( parseFloat(cs.borderTopWidth) || 0 );
} else {
docEl = doc.documentElement;
x = ( elBounds.x + docEl.scrollLeft - docEl.clientLeft ) * logicalZoomRatio;
y = ( elBounds.y + docEl.scrollTop - docEl.clientTop ) * logicalZoomRatio;
}
boxPos = 'absolute';
}
s.position = boxPos;
s.left = x;
s.top = y;
s.zIndex = tgtPos === 'static' ? -1 : tgtCS.zIndex;
this.isPositioned = true;
}
},
updateSize: PIE.emptyFn,
updateVisibility: function() {
var vis = this.styleInfos.visibilityInfo.getProps();
this.getBox().style.display = ( vis.visible && vis.displayed ) ? '' : 'none';
},
updateProps: function() {
if( this.isActive() ) {
this.updateVisibility();
} else {
this.destroy();
}
},
getPositioningElement: function() {
var el = this.targetElement;
return el.tagName in PIE.tableCellTags ? el.offsetParent : el;
},
getBox: function() {
var box = this._box, el;
if( !box ) {
el = this.getPositioningElement();
box = this._box = doc.createElement( 'css3-container' );
box.style['direction'] = 'ltr'; //fix positioning bug in rtl environments
this.updateVisibility();
el.parentNode.insertBefore( box, el );
}
return box;
},
finishUpdate: PIE.emptyFn,
destroy: function() {
var box = this._box, par;
if( box && ( par = box.parentNode ) ) {
par.removeChild( box );
}
delete this._box;
delete this._layers;
}
} );
/**
* Renderer for element backgrounds.
* @constructor
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
* @param {PIE.RootRenderer} parent
*/
PIE.BackgroundRenderer = PIE.RendererBase.newRenderer( {
boxZIndex: 2,
boxName: 'background',
needsUpdate: function() {
var si = this.styleInfos;
return si.backgroundInfo.changed() || si.borderRadiusInfo.changed();
},
isActive: function() {
var si = this.styleInfos;
return si.borderImageInfo.isActive() ||
si.borderRadiusInfo.isActive() ||
si.backgroundInfo.isActive() ||
( si.boxShadowInfo.isActive() && si.boxShadowInfo.getProps().inset );
},
/**
* Draw the shapes
*/
draw: function() {
var bounds = this.boundsInfo.getBounds();
if( bounds.w && bounds.h ) {
this.drawBgColor();
this.drawBgImages();
}
},
/**
* Draw the background color shape
*/
drawBgColor: function() {
var props = this.styleInfos.backgroundInfo.getProps(),
bounds = this.boundsInfo.getBounds(),
el = this.targetElement,
color = props && props.color,
shape, w, h, s, alpha;
if( color && color.alpha() > 0 ) {
this.hideBackground();
shape = this.getShape( 'bgColor', 'fill', this.getBox(), 1 );
w = bounds.w;
h = bounds.h;
shape.stroked = false;
shape.coordsize = w * 2 + ',' + h * 2;
shape.coordorigin = '1,1';
shape.path = this.getBoxPath( null, 2 );
s = shape.style;
s.width = w;
s.height = h;
shape.fill.color = color.colorValue( el );
alpha = color.alpha();
if( alpha < 1 ) {
shape.fill.opacity = alpha;
}
} else {
this.deleteShape( 'bgColor' );
}
},
/**
* Draw all the background image layers
*/
drawBgImages: function() {
var props = this.styleInfos.backgroundInfo.getProps(),
bounds = this.boundsInfo.getBounds(),
images = props && props.bgImages,
img, shape, w, h, s, i;
if( images ) {
this.hideBackground();
w = bounds.w;
h = bounds.h;
i = images.length;
while( i-- ) {
img = images[i];
shape = this.getShape( 'bgImage' + i, 'fill', this.getBox(), 2 );
shape.stroked = false;
shape.fill.type = 'tile';
shape.fillcolor = 'none';
shape.coordsize = w * 2 + ',' + h * 2;
shape.coordorigin = '1,1';
shape.path = this.getBoxPath( 0, 2 );
s = shape.style;
s.width = w;
s.height = h;
if( img.imgType === 'linear-gradient' ) {
this.addLinearGradient( shape, img );
}
else {
shape.fill.src = img.imgUrl;
this.positionBgImage( shape, i );
}
}
}
// Delete any bgImage shapes previously created which weren't used above
i = images ? images.length : 0;
while( this.deleteShape( 'bgImage' + i++ ) ) {}
},
/**
* Set the position and clipping of the background image for a layer
* @param {Element} shape
* @param {number} index
*/
positionBgImage: function( shape, index ) {
var me = this;
PIE.Util.withImageSize( shape.fill.src, function( size ) {
var el = me.targetElement,
bounds = me.boundsInfo.getBounds(),
elW = bounds.w,
elH = bounds.h;
// It's possible that the element dimensions are zero now but weren't when the original
// update executed, make sure that's not the case to avoid divide-by-zero error
if( elW && elH ) {
var fill = shape.fill,
si = me.styleInfos,
border = si.borderInfo.getProps(),
bw = border && border.widths,
bwT = bw ? bw['t'].pixels( el ) : 0,
bwR = bw ? bw['r'].pixels( el ) : 0,
bwB = bw ? bw['b'].pixels( el ) : 0,
bwL = bw ? bw['l'].pixels( el ) : 0,
bg = si.backgroundInfo.getProps().bgImages[ index ],
bgPos = bg.bgPosition ? bg.bgPosition.coords( el, elW - size.w - bwL - bwR, elH - size.h - bwT - bwB ) : { x:0, y:0 },
repeat = bg.imgRepeat,
pxX, pxY,
clipT = 0, clipL = 0,
clipR = elW + 1, clipB = elH + 1, //make sure the default clip region is not inside the box (by a subpixel)
clipAdjust = PIE.ieVersion === 8 ? 0 : 1; //prior to IE8 requires 1 extra pixel in the image clip region
// Positioning - find the pixel offset from the top/left and convert to a ratio
// The position is shifted by half a pixel, to adjust for the half-pixel coordorigin shift which is
// needed to fix antialiasing but makes the bg image fuzzy.
pxX = Math.round( bgPos.x ) + bwL + 0.5;
pxY = Math.round( bgPos.y ) + bwT + 0.5;
fill.position = ( pxX / elW ) + ',' + ( pxY / elH );
// Set the size of the image. We have to actually set it to px values otherwise it will not honor
// the user's browser zoom level and always display at its natural screen size.
fill['size']['x'] = 1; //Can be any value, just has to be set to "prime" it so the next line works. Weird!
fill['size'] = size.w + 'px,' + size.h + 'px';
// Repeating - clip the image shape
if( repeat && repeat !== 'repeat' ) {
if( repeat === 'repeat-x' || repeat === 'no-repeat' ) {
clipT = pxY + 1;
clipB = pxY + size.h + clipAdjust;
}
if( repeat === 'repeat-y' || repeat === 'no-repeat' ) {
clipL = pxX + 1;
clipR = pxX + size.w + clipAdjust;
}
shape.style.clip = 'rect(' + clipT + 'px,' + clipR + 'px,' + clipB + 'px,' + clipL + 'px)';
}
}
} );
},
/**
* Draw the linear gradient for a gradient layer
* @param {Element} shape
* @param {Object} info The object holding the information about the gradient
*/
addLinearGradient: function( shape, info ) {
var el = this.targetElement,
bounds = this.boundsInfo.getBounds(),
w = bounds.w,
h = bounds.h,
fill = shape.fill,
stops = info.stops,
stopCount = stops.length,
PI = Math.PI,
GradientUtil = PIE.GradientUtil,
perpendicularIntersect = GradientUtil.perpendicularIntersect,
distance = GradientUtil.distance,
metrics = GradientUtil.getGradientMetrics( el, w, h, info ),
angle = metrics.angle,
startX = metrics.startX,
startY = metrics.startY,
startCornerX = metrics.startCornerX,
startCornerY = metrics.startCornerY,
endCornerX = metrics.endCornerX,
endCornerY = metrics.endCornerY,
deltaX = metrics.deltaX,
deltaY = metrics.deltaY,
lineLength = metrics.lineLength,
vmlAngle, vmlGradientLength, vmlColors,
stopPx, vmlOffsetPct,
p, i, j, before, after;
// In VML land, the angle of the rendered gradient depends on the aspect ratio of the shape's
// bounding box; for example specifying a 45 deg angle actually results in a gradient
// drawn diagonally from one corner to its opposite corner, which will only appear to the
// viewer as 45 degrees if the shape is equilateral. We adjust for this by taking the x/y deltas
// between the start and end points, multiply one of them by the shape's aspect ratio,
// and get their arctangent, resulting in an appropriate VML angle. If the angle is perfectly
// horizontal or vertical then we don't need to do this conversion.
vmlAngle = ( angle % 90 ) ? Math.atan2( deltaX * w / h, deltaY ) / PI * 180 : ( angle + 90 );
// VML angles are 180 degrees offset from CSS angles
vmlAngle += 180;
vmlAngle = vmlAngle % 360;
// Add all the stops to the VML 'colors' list, including the first and last stops.
// For each, we find its pixel offset along the gradient-line; if the offset of a stop is less
// than that of its predecessor we increase it to be equal. We then map that pixel offset to a
// percentage along the VML gradient-line, which runs from shape corner to corner.
p = perpendicularIntersect( startCornerX, startCornerY, angle, endCornerX, endCornerY );
vmlGradientLength = distance( startCornerX, startCornerY, p[0], p[1] );
vmlColors = [];
p = perpendicularIntersect( startX, startY, angle, startCornerX, startCornerY );
vmlOffsetPct = distance( startX, startY, p[0], p[1] ) / vmlGradientLength * 100;
// Find the pixel offsets along the CSS3 gradient-line for each stop.
stopPx = [];
for( i = 0; i < stopCount; i++ ) {
stopPx.push( stops[i].offset ? stops[i].offset.pixels( el, lineLength ) :
i === 0 ? 0 : i === stopCount - 1 ? lineLength : null );
}
// Fill in gaps with evenly-spaced offsets
for( i = 1; i < stopCount; i++ ) {
if( stopPx[ i ] === null ) {
before = stopPx[ i - 1 ];
j = i;
do {
after = stopPx[ ++j ];
} while( after === null );
stopPx[ i ] = before + ( after - before ) / ( j - i + 1 );
}
// Make sure each stop's offset is no less than the one before it
stopPx[ i ] = Math.max( stopPx[ i ], stopPx[ i - 1 ] );
}
// Convert to percentage along the VML gradient line and add to the VML 'colors' value
for( i = 0; i < stopCount; i++ ) {
vmlColors.push(
( vmlOffsetPct + ( stopPx[ i ] / vmlGradientLength * 100 ) ) + '% ' + stops[i].color.colorValue( el )
);
}
// Now, finally, we're ready to render the gradient fill. Set the start and end colors to
// the first and last stop colors; this just sets outer bounds for the gradient.
fill['angle'] = vmlAngle;
fill['type'] = 'gradient';
fill['method'] = 'sigma';
fill['color'] = stops[0].color.colorValue( el );
fill['color2'] = stops[stopCount - 1].color.colorValue( el );
if( fill['colors'] ) { //sometimes the colors object isn't initialized so we have to assign it directly (?)
fill['colors'].value = vmlColors.join( ',' );
} else {
fill['colors'] = vmlColors.join( ',' );
}
},
/**
* Hide the actual background image and color of the element.
*/
hideBackground: function() {
var rs = this.targetElement.runtimeStyle;
rs.backgroundImage = 'url(about:blank)'; //ensures the background area reacts to mouse events
rs.backgroundColor = 'transparent';
},
destroy: function() {
PIE.RendererBase.destroy.call( this );
var rs = this.targetElement.runtimeStyle;
rs.backgroundImage = rs.backgroundColor = '';
}
} );
/**
* Renderer for element borders.
* @constructor
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
* @param {PIE.RootRenderer} parent
*/
PIE.BorderRenderer = PIE.RendererBase.newRenderer( {
boxZIndex: 4,
boxName: 'border',
needsUpdate: function() {
var si = this.styleInfos;
return si.borderInfo.changed() || si.borderRadiusInfo.changed();
},
isActive: function() {
var si = this.styleInfos;
return si.borderRadiusInfo.isActive() &&
!si.borderImageInfo.isActive() &&
si.borderInfo.isActive(); //check BorderStyleInfo last because it's the most expensive
},
/**
* Draw the border shape(s)
*/
draw: function() {
var el = this.targetElement,
props = this.styleInfos.borderInfo.getProps(),
bounds = this.boundsInfo.getBounds(),
w = bounds.w,
h = bounds.h,
shape, stroke, s,
segments, seg, i, len;
if( props ) {
this.hideBorder();
segments = this.getBorderSegments( 2 );
for( i = 0, len = segments.length; i < len; i++) {
seg = segments[i];
shape = this.getShape( 'borderPiece' + i, seg.stroke ? 'stroke' : 'fill', this.getBox() );
shape.coordsize = w * 2 + ',' + h * 2;
shape.coordorigin = '1,1';
shape.path = seg.path;
s = shape.style;
s.width = w;
s.height = h;
shape.filled = !!seg.fill;
shape.stroked = !!seg.stroke;
if( seg.stroke ) {
stroke = shape.stroke;
stroke['weight'] = seg.weight + 'px';
stroke.color = seg.color.colorValue( el );
stroke['dashstyle'] = seg.stroke === 'dashed' ? '2 2' : seg.stroke === 'dotted' ? '1 1' : 'solid';
stroke['linestyle'] = seg.stroke === 'double' && seg.weight > 2 ? 'ThinThin' : 'Single';
} else {
shape.fill.color = seg.fill.colorValue( el );
}
}
// remove any previously-created border shapes which didn't get used above
while( this.deleteShape( 'borderPiece' + i++ ) ) {}
}
},
/**
* Get the VML path definitions for the border segment(s).
* @param {number=} mult If specified, all coordinates will be multiplied by this number
* @return {Array.<string>}
*/
getBorderSegments: function( mult ) {
var el = this.targetElement,
bounds, elW, elH,
borderInfo = this.styleInfos.borderInfo,
segments = [],
floor, ceil, wT, wR, wB, wL,
round = Math.round,
borderProps, radiusInfo, radii, widths, styles, colors;
if( borderInfo.isActive() ) {
borderProps = borderInfo.getProps();
widths = borderProps.widths;
styles = borderProps.styles;
colors = borderProps.colors;
if( borderProps.widthsSame && borderProps.stylesSame && borderProps.colorsSame ) {
if( colors['t'].alpha() > 0 ) {
// shortcut for identical border on all sides - only need 1 stroked shape
wT = widths['t'].pixels( el ); //thickness
wR = wT / 2; //shrink
segments.push( {
path: this.getBoxPath( { t: wR, r: wR, b: wR, l: wR }, mult ),
stroke: styles['t'],
color: colors['t'],
weight: wT
} );
}
}
else {
mult = mult || 1;
bounds = this.boundsInfo.getBounds();
elW = bounds.w;
elH = bounds.h;
wT = round( widths['t'].pixels( el ) );
wR = round( widths['r'].pixels( el ) );
wB = round( widths['b'].pixels( el ) );
wL = round( widths['l'].pixels( el ) );
var pxWidths = {
't': wT,
'r': wR,
'b': wB,
'l': wL
};
radiusInfo = this.styleInfos.borderRadiusInfo;
if( radiusInfo.isActive() ) {
radii = this.getRadiiPixels( radiusInfo.getProps() );
}
floor = Math.floor;
ceil = Math.ceil;
function radius( xy, corner ) {
return radii ? radii[ xy ][ corner ] : 0;
}
function curve( corner, shrinkX, shrinkY, startAngle, ccw, doMove ) {
var rx = radius( 'x', corner),
ry = radius( 'y', corner),
deg = 65535,
isRight = corner.charAt( 1 ) === 'r',
isBottom = corner.charAt( 0 ) === 'b';
return ( rx > 0 && ry > 0 ) ?
( doMove ? 'al' : 'ae' ) +
( isRight ? ceil( elW - rx ) : floor( rx ) ) * mult + ',' + // center x
( isBottom ? ceil( elH - ry ) : floor( ry ) ) * mult + ',' + // center y
( floor( rx ) - shrinkX ) * mult + ',' + // width
( floor( ry ) - shrinkY ) * mult + ',' + // height
( startAngle * deg ) + ',' + // start angle
( 45 * deg * ( ccw ? 1 : -1 ) // angle change
) : (
( doMove ? 'm' : 'l' ) +
( isRight ? elW - shrinkX : shrinkX ) * mult + ',' +
( isBottom ? elH - shrinkY : shrinkY ) * mult
);
}
function line( side, shrink, ccw, doMove ) {
var
start = (
side === 't' ?
floor( radius( 'x', 'tl') ) * mult + ',' + ceil( shrink ) * mult :
side === 'r' ?
ceil( elW - shrink ) * mult + ',' + floor( radius( 'y', 'tr') ) * mult :
side === 'b' ?
ceil( elW - radius( 'x', 'br') ) * mult + ',' + floor( elH - shrink ) * mult :
// side === 'l' ?
floor( shrink ) * mult + ',' + ceil( elH - radius( 'y', 'bl') ) * mult
),
end = (
side === 't' ?
ceil( elW - radius( 'x', 'tr') ) * mult + ',' + ceil( shrink ) * mult :
side === 'r' ?
ceil( elW - shrink ) * mult + ',' + ceil( elH - radius( 'y', 'br') ) * mult :
side === 'b' ?
floor( radius( 'x', 'bl') ) * mult + ',' + floor( elH - shrink ) * mult :
// side === 'l' ?
floor( shrink ) * mult + ',' + floor( radius( 'y', 'tl') ) * mult
);
return ccw ? ( doMove ? 'm' + end : '' ) + 'l' + start :
( doMove ? 'm' + start : '' ) + 'l' + end;
}
function addSide( side, sideBefore, sideAfter, cornerBefore, cornerAfter, baseAngle ) {
var vert = side === 'l' || side === 'r',
sideW = pxWidths[ side ],
beforeX, beforeY, afterX, afterY;
if( sideW > 0 && styles[ side ] !== 'none' && colors[ side ].alpha() > 0 ) {
beforeX = pxWidths[ vert ? side : sideBefore ];
beforeY = pxWidths[ vert ? sideBefore : side ];
afterX = pxWidths[ vert ? side : sideAfter ];
afterY = pxWidths[ vert ? sideAfter : side ];
if( styles[ side ] === 'dashed' || styles[ side ] === 'dotted' ) {
segments.push( {
path: curve( cornerBefore, beforeX, beforeY, baseAngle + 45, 0, 1 ) +
curve( cornerBefore, 0, 0, baseAngle, 1, 0 ),
fill: colors[ side ]
} );
segments.push( {
path: line( side, sideW / 2, 0, 1 ),
stroke: styles[ side ],
weight: sideW,
color: colors[ side ]
} );
segments.push( {
path: curve( cornerAfter, afterX, afterY, baseAngle, 0, 1 ) +
curve( cornerAfter, 0, 0, baseAngle - 45, 1, 0 ),
fill: colors[ side ]
} );
}
else {
segments.push( {
path: curve( cornerBefore, beforeX, beforeY, baseAngle + 45, 0, 1 ) +
line( side, sideW, 0, 0 ) +
curve( cornerAfter, afterX, afterY, baseAngle, 0, 0 ) +
( styles[ side ] === 'double' && sideW > 2 ?
curve( cornerAfter, afterX - floor( afterX / 3 ), afterY - floor( afterY / 3 ), baseAngle - 45, 1, 0 ) +
line( side, ceil( sideW / 3 * 2 ), 1, 0 ) +
curve( cornerBefore, beforeX - floor( beforeX / 3 ), beforeY - floor( beforeY / 3 ), baseAngle, 1, 0 ) +
'x ' +
curve( cornerBefore, floor( beforeX / 3 ), floor( beforeY / 3 ), baseAngle + 45, 0, 1 ) +
line( side, floor( sideW / 3 ), 1, 0 ) +
curve( cornerAfter, floor( afterX / 3 ), floor( afterY / 3 ), baseAngle, 0, 0 )
: '' ) +
curve( cornerAfter, 0, 0, baseAngle - 45, 1, 0 ) +
line( side, 0, 1, 0 ) +
curve( cornerBefore, 0, 0, baseAngle, 1, 0 ),
fill: colors[ side ]
} );
}
}
}
addSide( 't', 'l', 'r', 'tl', 'tr', 90 );
addSide( 'r', 't', 'b', 'tr', 'br', 0 );
addSide( 'b', 'r', 'l', 'br', 'bl', -90 );
addSide( 'l', 'b', 't', 'bl', 'tl', -180 );
}
}
return segments;
},
destroy: function() {
var me = this;
if (me.finalized || !me.styleInfos.borderImageInfo.isActive()) {
me.targetElement.runtimeStyle.borderColor = '';
}
PIE.RendererBase.destroy.call( me );
}
} );
/**
* Renderer for border-image
* @constructor
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
* @param {PIE.RootRenderer} parent
*/
PIE.BorderImageRenderer = PIE.RendererBase.newRenderer( {
boxZIndex: 5,
pieceNames: [ 't', 'tr', 'r', 'br', 'b', 'bl', 'l', 'tl', 'c' ],
needsUpdate: function() {
return this.styleInfos.borderImageInfo.changed();
},
isActive: function() {
return this.styleInfos.borderImageInfo.isActive();
},
draw: function() {
this.getBox(); //make sure pieces are created
var props = this.styleInfos.borderImageInfo.getProps(),
borderProps = this.styleInfos.borderInfo.getProps(),
bounds = this.boundsInfo.getBounds(),
el = this.targetElement,
pieces = this.pieces;
PIE.Util.withImageSize( props.src, function( imgSize ) {
var elW = bounds.w,
elH = bounds.h,
zero = PIE.getLength( '0' ),
widths = props.widths || ( borderProps ? borderProps.widths : { 't': zero, 'r': zero, 'b': zero, 'l': zero } ),
widthT = widths['t'].pixels( el ),
widthR = widths['r'].pixels( el ),
widthB = widths['b'].pixels( el ),
widthL = widths['l'].pixels( el ),
slices = props.slice,
sliceT = slices['t'].pixels( el ),
sliceR = slices['r'].pixels( el ),
sliceB = slices['b'].pixels( el ),
sliceL = slices['l'].pixels( el );
// Piece positions and sizes
function setSizeAndPos( piece, w, h, x, y ) {
var s = pieces[piece].style,
max = Math.max;
s.width = max(w, 0);
s.height = max(h, 0);
s.left = x;
s.top = y;
}
setSizeAndPos( 'tl', widthL, widthT, 0, 0 );
setSizeAndPos( 't', elW - widthL - widthR, widthT, widthL, 0 );
setSizeAndPos( 'tr', widthR, widthT, elW - widthR, 0 );
setSizeAndPos( 'r', widthR, elH - widthT - widthB, elW - widthR, widthT );
setSizeAndPos( 'br', widthR, widthB, elW - widthR, elH - widthB );
setSizeAndPos( 'b', elW - widthL - widthR, widthB, widthL, elH - widthB );
setSizeAndPos( 'bl', widthL, widthB, 0, elH - widthB );
setSizeAndPos( 'l', widthL, elH - widthT - widthB, 0, widthT );
setSizeAndPos( 'c', elW - widthL - widthR, elH - widthT - widthB, widthL, widthT );
// image croppings
function setCrops( sides, crop, val ) {
for( var i=0, len=sides.length; i < len; i++ ) {
pieces[ sides[i] ]['imagedata'][ crop ] = val;
}
}
// corners
setCrops( [ 'tl', 't', 'tr' ], 'cropBottom', ( imgSize.h - sliceT ) / imgSize.h );
setCrops( [ 'tl', 'l', 'bl' ], 'cropRight', ( imgSize.w - sliceL ) / imgSize.w );
setCrops( [ 'bl', 'b', 'br' ], 'cropTop', ( imgSize.h - sliceB ) / imgSize.h );
setCrops( [ 'tr', 'r', 'br' ], 'cropLeft', ( imgSize.w - sliceR ) / imgSize.w );
// edges and center
// TODO right now this treats everything like 'stretch', need to support other schemes
//if( props.repeat.v === 'stretch' ) {
setCrops( [ 'l', 'r', 'c' ], 'cropTop', sliceT / imgSize.h );
setCrops( [ 'l', 'r', 'c' ], 'cropBottom', sliceB / imgSize.h );
//}
//if( props.repeat.h === 'stretch' ) {
setCrops( [ 't', 'b', 'c' ], 'cropLeft', sliceL / imgSize.w );
setCrops( [ 't', 'b', 'c' ], 'cropRight', sliceR / imgSize.w );
//}
// center fill
pieces['c'].style.display = props.fill ? '' : 'none';
}, this );
},
getBox: function() {
var box = this.parent.getLayer( this.boxZIndex ),
s, piece, i,
pieceNames = this.pieceNames,
len = pieceNames.length;
if( !box ) {
box = doc.createElement( 'border-image' );
s = box.style;
s.position = 'absolute';
this.pieces = {};
for( i = 0; i < len; i++ ) {
piece = this.pieces[ pieceNames[i] ] = PIE.Util.createVmlElement( 'rect' );
piece.appendChild( PIE.Util.createVmlElement( 'imagedata' ) );
s = piece.style;
s['behavior'] = 'url(#default#VML)';
s.position = "absolute";
s.top = s.left = 0;
piece['imagedata'].src = this.styleInfos.borderImageInfo.getProps().src;
piece.stroked = false;
piece.filled = false;
box.appendChild( piece );
}
this.parent.addLayer( this.boxZIndex, box );
}
return box;
},
prepareUpdate: function() {
if (this.isActive()) {
var me = this,
el = me.targetElement,
rs = el.runtimeStyle,
widths = me.styleInfos.borderImageInfo.getProps().widths;
// Force border-style to solid so it doesn't collapse
rs.borderStyle = 'solid';
// If widths specified in border-image shorthand, override border-width
// NOTE px units needed here as this gets used by the IE9 renderer too
if ( widths ) {
rs.borderTopWidth = widths['t'].pixels( el ) + 'px';
rs.borderRightWidth = widths['r'].pixels( el ) + 'px';
rs.borderBottomWidth = widths['b'].pixels( el ) + 'px';
rs.borderLeftWidth = widths['l'].pixels( el ) + 'px';
}
// Make the border transparent
me.hideBorder();
}
},
destroy: function() {
var me = this,
rs = me.targetElement.runtimeStyle;
rs.borderStyle = '';
if (me.finalized || !me.styleInfos.borderInfo.isActive()) {
rs.borderColor = rs.borderWidth = '';
}
PIE.RendererBase.destroy.call( this );
}
} );
/**
* Renderer for outset box-shadows
* @constructor
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
* @param {PIE.RootRenderer} parent
*/
PIE.BoxShadowOutsetRenderer = PIE.RendererBase.newRenderer( {
boxZIndex: 1,
boxName: 'outset-box-shadow',
needsUpdate: function() {
var si = this.styleInfos;
return si.boxShadowInfo.changed() || si.borderRadiusInfo.changed();
},
isActive: function() {
var boxShadowInfo = this.styleInfos.boxShadowInfo;
return boxShadowInfo.isActive() && boxShadowInfo.getProps().outset[0];
},
draw: function() {
var me = this,
el = this.targetElement,
box = this.getBox(),
styleInfos = this.styleInfos,
shadowInfos = styleInfos.boxShadowInfo.getProps().outset,
radii = styleInfos.borderRadiusInfo.getProps(),
len = shadowInfos.length,
i = len, j,
bounds = this.boundsInfo.getBounds(),
w = bounds.w,
h = bounds.h,
clipAdjust = PIE.ieVersion === 8 ? 1 : 0, //workaround for IE8 bug where VML leaks out top/left of clip region by 1px
corners = [ 'tl', 'tr', 'br', 'bl' ], corner,
shadowInfo, shape, fill, ss, xOff, yOff, spread, blur, shrink, color, alpha, path,
totalW, totalH, focusX, focusY, isBottom, isRight;
function getShadowShape( index, corner, xOff, yOff, color, blur, path ) {
var shape = me.getShape( 'shadow' + index + corner, 'fill', box, len - index ),
fill = shape.fill;
// Position and size
shape['coordsize'] = w * 2 + ',' + h * 2;
shape['coordorigin'] = '1,1';
// Color and opacity
shape['stroked'] = false;
shape['filled'] = true;
fill.color = color.colorValue( el );
if( blur ) {
fill['type'] = 'gradienttitle'; //makes the VML gradient follow the shape's outline - hooray for undocumented features?!?!
fill['color2'] = fill.color;
fill['opacity'] = 0;
}
// Path
shape.path = path;
// This needs to go last for some reason, to prevent rendering at incorrect size
ss = shape.style;
ss.left = xOff;
ss.top = yOff;
ss.width = w;
ss.height = h;
return shape;
}
while( i-- ) {
shadowInfo = shadowInfos[ i ];
xOff = shadowInfo.xOffset.pixels( el );
yOff = shadowInfo.yOffset.pixels( el );
spread = shadowInfo.spread.pixels( el );
blur = shadowInfo.blur.pixels( el );
color = shadowInfo.color;
// Shape path
shrink = -spread - blur;
if( !radii && blur ) {
// If blurring, use a non-null border radius info object so that getBoxPath will
// round the corners of the expanded shadow shape rather than squaring them off.
radii = PIE.BorderRadiusStyleInfo.ALL_ZERO;
}
path = this.getBoxPath( { t: shrink, r: shrink, b: shrink, l: shrink }, 2, radii );
if( blur ) {
totalW = ( spread + blur ) * 2 + w;
totalH = ( spread + blur ) * 2 + h;
focusX = totalW ? blur * 2 / totalW : 0;
focusY = totalH ? blur * 2 / totalH : 0;
if( blur - spread > w / 2 || blur - spread > h / 2 ) {
// If the blur is larger than half the element's narrowest dimension, we cannot do
// this with a single shape gradient, because its focussize would have to be less than
// zero which results in ugly artifacts. Instead we create four shapes, each with its
// gradient focus past center, and then clip them so each only shows the quadrant
// opposite the focus.
for( j = 4; j--; ) {
corner = corners[j];
isBottom = corner.charAt( 0 ) === 'b';
isRight = corner.charAt( 1 ) === 'r';
shape = getShadowShape( i, corner, xOff, yOff, color, blur, path );
fill = shape.fill;
fill['focusposition'] = ( isRight ? 1 - focusX : focusX ) + ',' +
( isBottom ? 1 - focusY : focusY );
fill['focussize'] = '0,0';
// Clip to show only the appropriate quadrant. Add 1px to the top/left clip values
// in IE8 to prevent a bug where IE8 displays one pixel outside the clip region.
shape.style.clip = 'rect(' + ( ( isBottom ? totalH / 2 : 0 ) + clipAdjust ) + 'px,' +
( isRight ? totalW : totalW / 2 ) + 'px,' +
( isBottom ? totalH : totalH / 2 ) + 'px,' +
( ( isRight ? totalW / 2 : 0 ) + clipAdjust ) + 'px)';
}
} else {
// TODO delete old quadrant shapes if resizing expands past the barrier
shape = getShadowShape( i, '', xOff, yOff, color, blur, path );
fill = shape.fill;
fill['focusposition'] = focusX + ',' + focusY;
fill['focussize'] = ( 1 - focusX * 2 ) + ',' + ( 1 - focusY * 2 );
}
} else {
shape = getShadowShape( i, '', xOff, yOff, color, blur, path );
alpha = color.alpha();
if( alpha < 1 ) {
// shape.style.filter = 'alpha(opacity=' + ( alpha * 100 ) + ')';
// ss.filter = 'progid:DXImageTransform.Microsoft.BasicImage(opacity=' + ( alpha ) + ')';
shape.fill.opacity = alpha;
}
}
}
}
} );
/**
* Renderer for re-rendering img elements using VML. Kicks in if the img has
* a border-radius applied, or if the -pie-png-fix flag is set.
* @constructor
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
* @param {PIE.RootRenderer} parent
*/
PIE.ImgRenderer = PIE.RendererBase.newRenderer( {
boxZIndex: 6,
boxName: 'imgEl',
needsUpdate: function() {
var si = this.styleInfos;
return this.targetElement.src !== this._lastSrc || si.borderRadiusInfo.changed();
},
isActive: function() {
var si = this.styleInfos;
return si.borderRadiusInfo.isActive() || si.backgroundInfo.isPngFix();
},
draw: function() {
this._lastSrc = src;
this.hideActualImg();
var shape = this.getShape( 'img', 'fill', this.getBox() ),
fill = shape.fill,
bounds = this.boundsInfo.getBounds(),
w = bounds.w,
h = bounds.h,
borderProps = this.styleInfos.borderInfo.getProps(),
borderWidths = borderProps && borderProps.widths,
el = this.targetElement,
src = el.src,
round = Math.round,
cs = el.currentStyle,
getLength = PIE.getLength,
s, zero;
// In IE6, the BorderRenderer will have hidden the border by moving the border-width to
// the padding; therefore we want to pretend the borders have no width so they aren't doubled
// when adding in the current padding value below.
if( !borderWidths || PIE.ieVersion < 7 ) {
zero = PIE.getLength( '0' );
borderWidths = { 't': zero, 'r': zero, 'b': zero, 'l': zero };
}
shape.stroked = false;
fill.type = 'frame';
fill.src = src;
fill.position = (w ? 0.5 / w : 0) + ',' + (h ? 0.5 / h : 0);
shape.coordsize = w * 2 + ',' + h * 2;
shape.coordorigin = '1,1';
shape.path = this.getBoxPath( {
t: round( borderWidths['t'].pixels( el ) + getLength( cs.paddingTop ).pixels( el ) ),
r: round( borderWidths['r'].pixels( el ) + getLength( cs.paddingRight ).pixels( el ) ),
b: round( borderWidths['b'].pixels( el ) + getLength( cs.paddingBottom ).pixels( el ) ),
l: round( borderWidths['l'].pixels( el ) + getLength( cs.paddingLeft ).pixels( el ) )
}, 2 );
s = shape.style;
s.width = w;
s.height = h;
},
hideActualImg: function() {
this.targetElement.runtimeStyle.filter = 'alpha(opacity=0)';
},
destroy: function() {
PIE.RendererBase.destroy.call( this );
this.targetElement.runtimeStyle.filter = '';
}
} );
/**
* Root renderer for IE9; manages the rendering layers in the element's background
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
*/
PIE.IE9RootRenderer = PIE.RendererBase.newRenderer( {
updatePos: PIE.emptyFn,
updateSize: PIE.emptyFn,
updateVisibility: PIE.emptyFn,
updateProps: PIE.emptyFn,
outerCommasRE: /^,+|,+$/g,
innerCommasRE: /,+/g,
setBackgroundLayer: function(zIndex, bg) {
var me = this,
bgLayers = me._bgLayers || ( me._bgLayers = [] ),
undef;
bgLayers[zIndex] = bg || undef;
},
finishUpdate: function() {
var me = this,
bgLayers = me._bgLayers,
bg;
if( bgLayers && ( bg = bgLayers.join( ',' ).replace( me.outerCommasRE, '' ).replace( me.innerCommasRE, ',' ) ) !== me._lastBg ) {
me._lastBg = me.targetElement.runtimeStyle.background = bg;
}
},
destroy: function() {
this.targetElement.runtimeStyle.background = '';
delete this._bgLayers;
}
} );
/**
* Renderer for element backgrounds, specific for IE9. Only handles translating CSS3 gradients
* to an equivalent SVG data URI.
* @constructor
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
*/
PIE.IE9BackgroundRenderer = PIE.RendererBase.newRenderer( {
bgLayerZIndex: 1,
needsUpdate: function() {
var si = this.styleInfos;
return si.backgroundInfo.changed();
},
isActive: function() {
var si = this.styleInfos;
return si.backgroundInfo.isActive() || si.borderImageInfo.isActive();
},
draw: function() {
var me = this,
props = me.styleInfos.backgroundInfo.getProps(),
bg, images, i = 0, img, bgAreaSize, bgSize;
if ( props ) {
bg = [];
images = props.bgImages;
if ( images ) {
while( img = images[ i++ ] ) {
if (img.imgType === 'linear-gradient' ) {
bgAreaSize = me.getBgAreaSize( img.bgOrigin );
bgSize = ( img.bgSize || PIE.BgSize.DEFAULT ).pixels(
me.targetElement, bgAreaSize.w, bgAreaSize.h, bgAreaSize.w, bgAreaSize.h
),
bg.push(
'url(data:image/svg+xml,' + escape( me.getGradientSvg( img, bgSize.w, bgSize.h ) ) + ') ' +
me.bgPositionToString( img.bgPosition ) + ' / ' + bgSize.w + 'px ' + bgSize.h + 'px ' +
( img.bgAttachment || '' ) + ' ' + ( img.bgOrigin || '' ) + ' ' + ( img.bgClip || '' )
);
} else {
bg.push( img.origString );
}
}
}
if ( props.color ) {
bg.push( props.color.val );
}
me.parent.setBackgroundLayer(me.bgLayerZIndex, bg.join(','));
}
},
bgPositionToString: function( bgPosition ) {
return bgPosition ? bgPosition.tokens.map(function(token) {
return token.tokenValue;
}).join(' ') : '0 0';
},
getBgAreaSize: function( bgOrigin ) {
var me = this,
el = me.targetElement,
bounds = me.boundsInfo.getBounds(),
elW = bounds.w,
elH = bounds.h,
w = elW,
h = elH,
borders, getLength, cs;
if( bgOrigin !== 'border-box' ) {
borders = me.styleInfos.borderInfo.getProps();
if( borders && ( borders = borders.widths ) ) {
w -= borders[ 'l' ].pixels( el ) + borders[ 'l' ].pixels( el );
h -= borders[ 't' ].pixels( el ) + borders[ 'b' ].pixels( el );
}
}
if ( bgOrigin === 'content-box' ) {
getLength = PIE.getLength;
cs = el.currentStyle;
w -= getLength( cs.paddingLeft ).pixels( el ) + getLength( cs.paddingRight ).pixels( el );
h -= getLength( cs.paddingTop ).pixels( el ) + getLength( cs.paddingBottom ).pixels( el );
}
return { w: w, h: h };
},
getGradientSvg: function( info, bgWidth, bgHeight ) {
var el = this.targetElement,
stopsInfo = info.stops,
stopCount = stopsInfo.length,
metrics = PIE.GradientUtil.getGradientMetrics( el, bgWidth, bgHeight, info ),
startX = metrics.startX,
startY = metrics.startY,
endX = metrics.endX,
endY = metrics.endY,
lineLength = metrics.lineLength,
stopPx,
i, j, before, after,
svg;
// Find the pixel offsets along the CSS3 gradient-line for each stop.
stopPx = [];
for( i = 0; i < stopCount; i++ ) {
stopPx.push( stopsInfo[i].offset ? stopsInfo[i].offset.pixels( el, lineLength ) :
i === 0 ? 0 : i === stopCount - 1 ? lineLength : null );
}
// Fill in gaps with evenly-spaced offsets
for( i = 1; i < stopCount; i++ ) {
if( stopPx[ i ] === null ) {
before = stopPx[ i - 1 ];
j = i;
do {
after = stopPx[ ++j ];
} while( after === null );
stopPx[ i ] = before + ( after - before ) / ( j - i + 1 );
}
}
svg = [
'<svg width="' + bgWidth + '" height="' + bgHeight + '" xmlns="http://www.w3.org/2000/svg">' +
'<defs>' +
'<linearGradient id="g" gradientUnits="userSpaceOnUse"' +
' x1="' + ( startX / bgWidth * 100 ) + '%" y1="' + ( startY / bgHeight * 100 ) + '%" x2="' + ( endX / bgWidth * 100 ) + '%" y2="' + ( endY / bgHeight * 100 ) + '%">'
];
// Convert to percentage along the SVG gradient line and add to the stops list
for( i = 0; i < stopCount; i++ ) {
svg.push(
'<stop offset="' + ( stopPx[ i ] / lineLength ) +
'" stop-color="' + stopsInfo[i].color.colorValue( el ) +
'" stop-opacity="' + stopsInfo[i].color.alpha() + '"/>'
);
}
svg.push(
'</linearGradient>' +
'</defs>' +
'<rect width="100%" height="100%" fill="url(#g)"/>' +
'</svg>'
);
return svg.join( '' );
},
destroy: function() {
this.parent.setBackgroundLayer( this.bgLayerZIndex );
}
} );
/**
* Renderer for border-image
* @constructor
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
* @param {PIE.RootRenderer} parent
*/
PIE.IE9BorderImageRenderer = PIE.RendererBase.newRenderer( {
REPEAT: 'repeat',
STRETCH: 'stretch',
ROUND: 'round',
bgLayerZIndex: 0,
needsUpdate: function() {
return this.styleInfos.borderImageInfo.changed();
},
isActive: function() {
return this.styleInfos.borderImageInfo.isActive();
},
draw: function() {
var me = this,
props = me.styleInfos.borderImageInfo.getProps(),
borderProps = me.styleInfos.borderInfo.getProps(),
bounds = me.boundsInfo.getBounds(),
repeat = props.repeat,
repeatH = repeat.h,
repeatV = repeat.v,
el = me.targetElement,
isAsync = 0;
PIE.Util.withImageSize( props.src, function( imgSize ) {
var elW = bounds.w,
elH = bounds.h,
imgW = imgSize.w,
imgH = imgSize.h,
// The image cannot be referenced as a URL directly in the SVG because IE9 throws a strange
// security exception (perhaps due to cross-origin policy within data URIs?) Therefore we
// work around this by converting the image data into a data URI itself using a transient
// canvas. This unfortunately requires the border-image src to be within the same domain,
// which isn't a limitation in true border-image, so we need to try and find a better fix.
imgSrc = me.imageToDataURI( props.src, imgW, imgH ),
REPEAT = me.REPEAT,
STRETCH = me.STRETCH,
ROUND = me.ROUND,
ceil = Math.ceil,
zero = PIE.getLength( '0' ),
widths = props.widths || ( borderProps ? borderProps.widths : { 't': zero, 'r': zero, 'b': zero, 'l': zero } ),
widthT = widths['t'].pixels( el ),
widthR = widths['r'].pixels( el ),
widthB = widths['b'].pixels( el ),
widthL = widths['l'].pixels( el ),
slices = props.slice,
sliceT = slices['t'].pixels( el ),
sliceR = slices['r'].pixels( el ),
sliceB = slices['b'].pixels( el ),
sliceL = slices['l'].pixels( el ),
centerW = elW - widthL - widthR,
middleH = elH - widthT - widthB,
imgCenterW = imgW - sliceL - sliceR,
imgMiddleH = imgH - sliceT - sliceB,
// Determine the size of each tile - 'round' is handled below
tileSizeT = repeatH === STRETCH ? centerW : imgCenterW * widthT / sliceT,
tileSizeR = repeatV === STRETCH ? middleH : imgMiddleH * widthR / sliceR,
tileSizeB = repeatH === STRETCH ? centerW : imgCenterW * widthB / sliceB,
tileSizeL = repeatV === STRETCH ? middleH : imgMiddleH * widthL / sliceL,
svg,
patterns = [],
rects = [],
i = 0;
// For 'round', subtract from each tile's size enough so that they fill the space a whole number of times
if (repeatH === ROUND) {
tileSizeT -= (tileSizeT - (centerW % tileSizeT || tileSizeT)) / ceil(centerW / tileSizeT);
tileSizeB -= (tileSizeB - (centerW % tileSizeB || tileSizeB)) / ceil(centerW / tileSizeB);
}
if (repeatV === ROUND) {
tileSizeR -= (tileSizeR - (middleH % tileSizeR || tileSizeR)) / ceil(middleH / tileSizeR);
tileSizeL -= (tileSizeL - (middleH % tileSizeL || tileSizeL)) / ceil(middleH / tileSizeL);
}
// Build the SVG for the border-image rendering. Add each piece as a pattern, which is then stretched
// or repeated as the fill of a rect of appropriate size.
svg = [
'<svg width="' + elW + '" height="' + elH + '" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">'
];
function addImage( x, y, w, h, cropX, cropY, cropW, cropH, tileW, tileH ) {
patterns.push(
'<pattern patternUnits="userSpaceOnUse" id="pattern' + i + '" ' +
'x="' + (repeatH === REPEAT ? x + w / 2 - tileW / 2 : x) + '" ' +
'y="' + (repeatV === REPEAT ? y + h / 2 - tileH / 2 : y) + '" ' +
'width="' + tileW + '" height="' + tileH + '">' +
'<svg width="' + tileW + '" height="' + tileH + '" viewBox="' + cropX + ' ' + cropY + ' ' + cropW + ' ' + cropH + '" preserveAspectRatio="none">' +
'<image xlink:href="' + imgSrc + '" x="0" y="0" width="' + imgW + '" height="' + imgH + '" />' +
'</svg>' +
'</pattern>'
);
rects.push(
'<rect x="' + x + '" y="' + y + '" width="' + w + '" height="' + h + '" fill="url(#pattern' + i + ')" />'
);
i++;
}
addImage( 0, 0, widthL, widthT, 0, 0, sliceL, sliceT, widthL, widthT ); // top left
addImage( widthL, 0, centerW, widthT, sliceL, 0, imgCenterW, sliceT, tileSizeT, widthT ); // top center
addImage( elW - widthR, 0, widthR, widthT, imgW - sliceR, 0, sliceR, sliceT, widthR, widthT ); // top right
addImage( 0, widthT, widthL, middleH, 0, sliceT, sliceL, imgMiddleH, widthL, tileSizeL ); // middle left
if ( props.fill ) { // center fill
addImage( widthL, widthT, centerW, middleH, sliceL, sliceT, imgCenterW, imgMiddleH,
tileSizeT || tileSizeB || imgCenterW, tileSizeL || tileSizeR || imgMiddleH );
}
addImage( elW - widthR, widthT, widthR, middleH, imgW - sliceR, sliceT, sliceR, imgMiddleH, widthR, tileSizeR ); // middle right
addImage( 0, elH - widthB, widthL, widthB, 0, imgH - sliceB, sliceL, sliceB, widthL, widthB ); // bottom left
addImage( widthL, elH - widthB, centerW, widthB, sliceL, imgH - sliceB, imgCenterW, sliceB, tileSizeB, widthB ); // bottom center
addImage( elW - widthR, elH - widthB, widthR, widthB, imgW - sliceR, imgH - sliceB, sliceR, sliceB, widthR, widthB ); // bottom right
svg.push(
'<defs>' +
patterns.join('\n') +
'</defs>' +
rects.join('\n') +
'</svg>'
);
me.parent.setBackgroundLayer( me.bgLayerZIndex, 'url(data:image/svg+xml,' + escape( svg.join( '' ) ) + ') no-repeat border-box border-box' );
// If the border-image's src wasn't immediately available, the SVG for its background layer
// will have been created asynchronously after the main element's update has finished; we'll
// therefore need to force the root renderer to sync to the final background once finished.
if( isAsync ) {
me.parent.finishUpdate();
}
}, me );
isAsync = 1;
},
/**
* Convert a given image to a data URI
*/
imageToDataURI: (function() {
var uris = {};
return function( src, width, height ) {
var uri = uris[ src ],
image, canvas;
if ( !uri ) {
image = new Image();
canvas = doc.createElement( 'canvas' );
image.src = src;
canvas.width = width;
canvas.height = height;
canvas.getContext( '2d' ).drawImage( image, 0, 0 );
uri = uris[ src ] = canvas.toDataURL();
}
return uri;
}
})(),
prepareUpdate: PIE.BorderImageRenderer.prototype.prepareUpdate,
destroy: function() {
var me = this,
rs = me.targetElement.runtimeStyle;
me.parent.setBackgroundLayer( me.bgLayerZIndex );
rs.borderColor = rs.borderStyle = rs.borderWidth = '';
}
} );
PIE.Element = (function() {
var wrappers = {},
lazyInitCssProp = PIE.CSS_PREFIX + 'lazy-init',
pollCssProp = PIE.CSS_PREFIX + 'poll',
trackActiveCssProp = PIE.CSS_PREFIX + 'track-active',
trackHoverCssProp = PIE.CSS_PREFIX + 'track-hover',
hoverClass = PIE.CLASS_PREFIX + 'hover',
activeClass = PIE.CLASS_PREFIX + 'active',
focusClass = PIE.CLASS_PREFIX + 'focus',
firstChildClass = PIE.CLASS_PREFIX + 'first-child',
ignorePropertyNames = { 'background':1, 'bgColor':1, 'display': 1 },
classNameRegExes = {},
dummyArray = [];
function addClass( el, className ) {
el.className += ' ' + className;
}
function removeClass( el, className ) {
var re = classNameRegExes[ className ] ||
( classNameRegExes[ className ] = new RegExp( '\\b' + className + '\\b', 'g' ) );
el.className = el.className.replace( re, '' );
}
function delayAddClass( el, className /*, className2*/ ) {
var classes = dummyArray.slice.call( arguments, 1 ),
i = classes.length;
setTimeout( function() {
if( el ) {
while( i-- ) {
addClass( el, classes[ i ] );
}
}
}, 0 );
}
function delayRemoveClass( el, className /*, className2*/ ) {
var classes = dummyArray.slice.call( arguments, 1 ),
i = classes.length;
setTimeout( function() {
if( el ) {
while( i-- ) {
removeClass( el, classes[ i ] );
}
}
}, 0 );
}
function Element( el ) {
var renderers,
rootRenderer,
boundsInfo = new PIE.BoundsInfo( el ),
styleInfos,
styleInfosArr,
initializing,
initialized,
eventsAttached,
eventListeners = [],
delayed,
destroyed,
poll;
/**
* Initialize PIE for this element.
*/
function init() {
if( !initialized ) {
var docEl,
bounds,
ieDocMode = PIE.ieDocMode,
cs = el.currentStyle,
lazy = cs.getAttribute( lazyInitCssProp ) === 'true',
trackActive = cs.getAttribute( trackActiveCssProp ) !== 'false',
trackHover = cs.getAttribute( trackHoverCssProp ) !== 'false',
childRenderers;
// Polling for size/position changes: default to on in IE8, off otherwise, overridable by -pie-poll
poll = cs.getAttribute( pollCssProp );
poll = ieDocMode > 7 ? poll !== 'false' : poll === 'true';
// Force layout so move/resize events will fire. Set this as soon as possible to avoid layout changes
// after load, but make sure it only gets called the first time through to avoid recursive calls to init().
if( !initializing ) {
initializing = 1;
el.runtimeStyle.zoom = 1;
initFirstChildPseudoClass();
}
boundsInfo.lock();
// If the -pie-lazy-init:true flag is set, check if the element is outside the viewport and if so, delay initialization
if( lazy && ( bounds = boundsInfo.getBounds() ) && ( docEl = doc.documentElement || doc.body ) &&
( bounds.y > docEl.clientHeight || bounds.x > docEl.clientWidth || bounds.y + bounds.h < 0 || bounds.x + bounds.w < 0 ) ) {
if( !delayed ) {
delayed = 1;
PIE.OnScroll.observe( init );
}
} else {
initialized = 1;
delayed = initializing = 0;
PIE.OnScroll.unobserve( init );
// Create the style infos and renderers
if ( ieDocMode === 9 ) {
styleInfos = {
backgroundInfo: new PIE.BackgroundStyleInfo( el ),
borderImageInfo: new PIE.BorderImageStyleInfo( el ),
borderInfo: new PIE.BorderStyleInfo( el )
};
styleInfosArr = [
styleInfos.backgroundInfo,
styleInfos.borderImageInfo
];
rootRenderer = new PIE.IE9RootRenderer( el, boundsInfo, styleInfos );
childRenderers = [
new PIE.IE9BackgroundRenderer( el, boundsInfo, styleInfos, rootRenderer ),
new PIE.IE9BorderImageRenderer( el, boundsInfo, styleInfos, rootRenderer )
];
} else {
styleInfos = {
backgroundInfo: new PIE.BackgroundStyleInfo( el ),
borderInfo: new PIE.BorderStyleInfo( el ),
borderImageInfo: new PIE.BorderImageStyleInfo( el ),
borderRadiusInfo: new PIE.BorderRadiusStyleInfo( el ),
boxShadowInfo: new PIE.BoxShadowStyleInfo( el ),
visibilityInfo: new PIE.VisibilityStyleInfo( el )
};
styleInfosArr = [
styleInfos.backgroundInfo,
styleInfos.borderInfo,
styleInfos.borderImageInfo,
styleInfos.borderRadiusInfo,
styleInfos.boxShadowInfo,
styleInfos.visibilityInfo
];
rootRenderer = new PIE.RootRenderer( el, boundsInfo, styleInfos );
childRenderers = [
new PIE.BoxShadowOutsetRenderer( el, boundsInfo, styleInfos, rootRenderer ),
new PIE.BackgroundRenderer( el, boundsInfo, styleInfos, rootRenderer ),
//new PIE.BoxShadowInsetRenderer( el, boundsInfo, styleInfos, rootRenderer ),
new PIE.BorderRenderer( el, boundsInfo, styleInfos, rootRenderer ),
new PIE.BorderImageRenderer( el, boundsInfo, styleInfos, rootRenderer )
];
if( el.tagName === 'IMG' ) {
childRenderers.push( new PIE.ImgRenderer( el, boundsInfo, styleInfos, rootRenderer ) );
}
rootRenderer.childRenderers = childRenderers; // circular reference, can't pass in constructor; TODO is there a cleaner way?
}
renderers = [ rootRenderer ].concat( childRenderers );
// Add property change listeners to ancestors if requested
initAncestorEventListeners();
// Add to list of polled elements in IE8
if( poll ) {
PIE.Heartbeat.observe( update );
PIE.Heartbeat.run();
}
// Trigger rendering
update( 1 );
}
if( !eventsAttached ) {
eventsAttached = 1;
if( ieDocMode < 9 ) {
addListener( el, 'onmove', handleMoveOrResize );
}
addListener( el, 'onresize', handleMoveOrResize );
addListener( el, 'onpropertychange', propChanged );
if( trackHover ) {
addListener( el, 'onmouseenter', mouseEntered );
}
if( trackHover || trackActive ) {
addListener( el, 'onmouseleave', mouseLeft );
}
if( trackActive ) {
addListener( el, 'onmousedown', mousePressed );
}
if( el.tagName in PIE.focusableElements ) {
addListener( el, 'onfocus', focused );
addListener( el, 'onblur', blurred );
}
PIE.OnResize.observe( handleMoveOrResize );
PIE.OnUnload.observe( removeEventListeners );
}
boundsInfo.unlock();
}
}
/**
* Event handler for onmove and onresize events. Invokes update() only if the element's
* bounds have previously been calculated, to prevent multiple runs during page load when
* the element has no initial CSS3 properties.
*/
function handleMoveOrResize() {
if( boundsInfo && boundsInfo.hasBeenQueried() ) {
update();
}
}
/**
* Update position and/or size as necessary. Both move and resize events call
* this rather than the updatePos/Size functions because sometimes, particularly
* during page load, one will fire but the other won't.
*/
function update( force ) {
if( !destroyed ) {
if( initialized ) {
var i, len = renderers.length;
lockAll();
for( i = 0; i < len; i++ ) {
renderers[i].prepareUpdate();
}
if( force || boundsInfo.positionChanged() ) {
/* TODO just using getBoundingClientRect (used internally by BoundsInfo) for detecting
position changes may not always be accurate; it's possible that
an element will actually move relative to its positioning parent, but its position
relative to the viewport will stay the same. Need to come up with a better way to
track movement. The most accurate would be the same logic used in RootRenderer.updatePos()
but that is a more expensive operation since it does some DOM walking, and we want this
check to be as fast as possible. */
for( i = 0; i < len; i++ ) {
renderers[i].updatePos();
}
}
if( force || boundsInfo.sizeChanged() ) {
for( i = 0; i < len; i++ ) {
renderers[i].updateSize();
}
}
rootRenderer.finishUpdate();
unlockAll();
}
else if( !initializing ) {
init();
}
}
}
/**
* Handle property changes to trigger update when appropriate.
*/
function propChanged() {
var i, len = renderers.length,
renderer,
e = event;
// Some elements like <table> fire onpropertychange events for old-school background properties
// ('background', 'bgColor') when runtimeStyle background properties are changed, which
// results in an infinite loop; therefore we filter out those property names. Also, 'display'
// is ignored because size calculations don't work correctly immediately when its onpropertychange
// event fires, and because it will trigger an onresize event anyway.
if( !destroyed && !( e && e.propertyName in ignorePropertyNames ) ) {
if( initialized ) {
lockAll();
for( i = 0; i < len; i++ ) {
renderers[i].prepareUpdate();
}
for( i = 0; i < len; i++ ) {
renderer = renderers[i];
// Make sure position is synced if the element hasn't already been rendered.
// TODO this feels sloppy - look into merging propChanged and update functions
if( !renderer.isPositioned ) {
renderer.updatePos();
}
if( renderer.needsUpdate() ) {
renderer.updateProps();
}
}
rootRenderer.finishUpdate();
unlockAll();
}
else if( !initializing ) {
init();
}
}
}
/**
* Handle mouseenter events. Adds a custom class to the element to allow IE6 to add
* hover styles to non-link elements, and to trigger a propertychange update.
*/
function mouseEntered() {
//must delay this because the mouseenter event fires before the :hover styles are added.
delayAddClass( el, hoverClass );
}
/**
* Handle mouseleave events
*/
function mouseLeft() {
//must delay this because the mouseleave event fires before the :hover styles are removed.
delayRemoveClass( el, hoverClass, activeClass );
}
/**
* Handle mousedown events. Adds a custom class to the element to allow IE6 to add
* active styles to non-link elements, and to trigger a propertychange update.
*/
function mousePressed() {
//must delay this because the mousedown event fires before the :active styles are added.
delayAddClass( el, activeClass );
// listen for mouseups on the document; can't just be on the element because the user might
// have dragged out of the element while the mouse button was held down
PIE.OnMouseup.observe( mouseReleased );
}
/**
* Handle mouseup events
*/
function mouseReleased() {
//must delay this because the mouseup event fires before the :active styles are removed.
delayRemoveClass( el, activeClass );
PIE.OnMouseup.unobserve( mouseReleased );
}
/**
* Handle focus events. Adds a custom class to the element to trigger a propertychange update.
*/
function focused() {
//must delay this because the focus event fires before the :focus styles are added.
delayAddClass( el, focusClass );
}
/**
* Handle blur events
*/
function blurred() {
//must delay this because the blur event fires before the :focus styles are removed.
delayRemoveClass( el, focusClass );
}
/**
* Handle property changes on ancestors of the element; see initAncestorEventListeners()
* which adds these listeners as requested with the -pie-watch-ancestors CSS property.
*/
function ancestorPropChanged() {
var name = event.propertyName;
if( name === 'className' || name === 'id' ) {
propChanged();
}
}
function lockAll() {
boundsInfo.lock();
for( var i = styleInfosArr.length; i--; ) {
styleInfosArr[i].lock();
}
}
function unlockAll() {
for( var i = styleInfosArr.length; i--; ) {
styleInfosArr[i].unlock();
}
boundsInfo.unlock();
}
function addListener( targetEl, type, handler ) {
targetEl.attachEvent( type, handler );
eventListeners.push( [ targetEl, type, handler ] );
}
/**
* Remove all event listeners from the element and any monitored ancestors.
*/
function removeEventListeners() {
if (eventsAttached) {
var i = eventListeners.length,
listener;
while( i-- ) {
listener = eventListeners[ i ];
listener[ 0 ].detachEvent( listener[ 1 ], listener[ 2 ] );
}
PIE.OnUnload.unobserve( removeEventListeners );
eventsAttached = 0;
eventListeners = [];
}
}
/**
* Clean everything up when the behavior is removed from the element, or the element
* is manually destroyed.
*/
function destroy() {
if( !destroyed ) {
var i, len;
removeEventListeners();
destroyed = 1;
// destroy any active renderers
if( renderers ) {
for( i = 0, len = renderers.length; i < len; i++ ) {
renderers[i].finalized = 1;
renderers[i].destroy();
}
}
// Remove from list of polled elements in IE8
if( poll ) {
PIE.Heartbeat.unobserve( update );
}
// Stop onresize listening
PIE.OnResize.unobserve( update );
// Kill references
renderers = boundsInfo = styleInfos = styleInfosArr = el = null;
}
}
/**
* If requested via the custom -pie-watch-ancestors CSS property, add onpropertychange and
* other event listeners to ancestor(s) of the element so we can pick up style changes
* based on CSS rules using descendant selectors.
*/
function initAncestorEventListeners() {
var watch = el.currentStyle.getAttribute( PIE.CSS_PREFIX + 'watch-ancestors' ),
i, a;
if( watch ) {
watch = parseInt( watch, 10 );
i = 0;
a = el.parentNode;
while( a && ( watch === 'NaN' || i++ < watch ) ) {
addListener( a, 'onpropertychange', ancestorPropChanged );
addListener( a, 'onmouseenter', mouseEntered );
addListener( a, 'onmouseleave', mouseLeft );
addListener( a, 'onmousedown', mousePressed );
if( a.tagName in PIE.focusableElements ) {
addListener( a, 'onfocus', focused );
addListener( a, 'onblur', blurred );
}
a = a.parentNode;
}
}
}
/**
* If the target element is a first child, add a pie_first-child class to it. This allows using
* the added class as a workaround for the fact that PIE's rendering element breaks the :first-child
* pseudo-class selector.
*/
function initFirstChildPseudoClass() {
var tmpEl = el,
isFirst = 1;
while( tmpEl = tmpEl.previousSibling ) {
if( tmpEl.nodeType === 1 ) {
isFirst = 0;
break;
}
}
if( isFirst ) {
addClass( el, firstChildClass );
}
}
// These methods are all already bound to this instance so there's no need to wrap them
// in a closure to maintain the 'this' scope object when calling them.
this.init = init;
this.update = update;
this.destroy = destroy;
this.el = el;
}
Element.getInstance = function( el ) {
var id = PIE.Util.getUID( el );
return wrappers[ id ] || ( wrappers[ id ] = new Element( el ) );
};
Element.destroy = function( el ) {
var id = PIE.Util.getUID( el ),
wrapper = wrappers[ id ];
if( wrapper ) {
wrapper.destroy();
delete wrappers[ id ];
}
};
Element.destroyAll = function() {
var els = [], wrapper;
if( wrappers ) {
for( var w in wrappers ) {
if( wrappers.hasOwnProperty( w ) ) {
wrapper = wrappers[ w ];
els.push( wrapper.el );
wrapper.destroy();
}
}
wrappers = {};
}
return els;
};
return Element;
})();
/*
* This file exposes the public API for invoking PIE.
*/
/**
* @property supportsVML
* True if the current IE browser environment has a functioning VML engine. Should be true
* in most IEs, but in rare cases may be false. If false, PIE will exit immediately when
* attached to an element; this property may be used for debugging or by external scripts
* to perform some special action when VML support is absent.
* @type {boolean}
*/
PIE[ 'supportsVML' ] = PIE.supportsVML;
/**
* Programatically attach PIE to a single element.
* @param {Element} el
*/
PIE[ 'attach' ] = function( el ) {
if (PIE.ieDocMode < 10 && PIE.supportsVML) {
PIE.Element.getInstance( el ).init();
}
};
/**
* Programatically detach PIE from a single element.
* @param {Element} el
*/
PIE[ 'detach' ] = function( el ) {
PIE.Element.destroy( el );
};
} // if( !PIE )
})();
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