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1/*! 2 * jQuery Color Animations v@VERSION 3 * https://github.com/jquery/jquery-color 4 * 5 * Copyright 2012 jQuery Foundation and other contributors 6 * Released under the MIT license. 7 * http://jquery.org/license 8 * 9 * Date: @DATE 10 */ 11(function( jQuery, undefined ) { 12 13 var stepHooks = "backgroundColor borderBottomColor borderLeftColor borderRightColor borderTopColor color columnRuleColor outlineColor textDecorationColor textEmphasisColor", 14 15 // plusequals test for += 100 -= 100 16 rplusequals = /^([\-+])=\s*(\d+\.?\d*)/, 17 // a set of RE's that can match strings and generate color tuples. 18 stringParsers = [{ 19 re: /rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/, 20 parse: function( execResult ) { 21 return [ 22 execResult[ 1 ], 23 execResult[ 2 ], 24 execResult[ 3 ], 25 execResult[ 4 ] 26 ]; 27 } 28 }, { 29 re: /rgba?\(\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/, 30 parse: function( execResult ) { 31 return [ 32 execResult[ 1 ] * 2.55, 33 execResult[ 2 ] * 2.55, 34 execResult[ 3 ] * 2.55, 35 execResult[ 4 ] 36 ]; 37 } 38 }, { 39 // this regex ignores A-F because it's compared against an already lowercased string 40 re: /#([a-f0-9]{2})([a-f0-9]{2})([a-f0-9]{2})/, 41 parse: function( execResult ) { 42 return [ 43 parseInt( execResult[ 1 ], 16 ), 44 parseInt( execResult[ 2 ], 16 ), 45 parseInt( execResult[ 3 ], 16 ) 46 ]; 47 } 48 }, { 49 // this regex ignores A-F because it's compared against an already lowercased string 50 re: /#([a-f0-9])([a-f0-9])([a-f0-9])/, 51 parse: function( execResult ) { 52 return [ 53 parseInt( execResult[ 1 ] + execResult[ 1 ], 16 ), 54 parseInt( execResult[ 2 ] + execResult[ 2 ], 16 ), 55 parseInt( execResult[ 3 ] + execResult[ 3 ], 16 ) 56 ]; 57 } 58 }, { 59 re: /hsla?\(\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/, 60 space: "hsla", 61 parse: function( execResult ) { 62 return [ 63 execResult[ 1 ], 64 execResult[ 2 ] / 100, 65 execResult[ 3 ] / 100, 66 execResult[ 4 ] 67 ]; 68 } 69 }], 70 71 // jQuery.Color( ) 72 color = jQuery.Color = function( color, green, blue, alpha ) { 73 return new jQuery.Color.fn.parse( color, green, blue, alpha ); 74 }, 75 spaces = { 76 rgba: { 77 props: { 78 red: { 79 idx: 0, 80 type: "byte" 81 }, 82 green: { 83 idx: 1, 84 type: "byte" 85 }, 86 blue: { 87 idx: 2, 88 type: "byte" 89 } 90 } 91 }, 92 93 hsla: { 94 props: { 95 hue: { 96 idx: 0, 97 type: "degrees" 98 }, 99 saturation: { 100 idx: 1, 101 type: "percent" 102 }, 103 lightness: { 104 idx: 2, 105 type: "percent" 106 } 107 } 108 } 109 }, 110 propTypes = { 111 "byte": { 112 floor: true, 113 max: 255 114 }, 115 "percent": { 116 max: 1 117 }, 118 "degrees": { 119 mod: 360, 120 floor: true 121 } 122 }, 123 support = color.support = {}, 124 125 // element for support tests 126 supportElem = jQuery( "<p>" )[ 0 ], 127 128 // colors = jQuery.Color.names 129 colors, 130 131 // local aliases of functions called often 132 each = jQuery.each; 133 134// determine rgba support immediately 135supportElem.style.cssText = "background-color:rgba(1,1,1,.5)"; 136support.rgba = supportElem.style.backgroundColor.indexOf( "rgba" ) > -1; 137 138// define cache name and alpha properties 139// for rgba and hsla spaces 140each( spaces, function( spaceName, space ) { 141 space.cache = "_" + spaceName; 142 space.props.alpha = { 143 idx: 3, 144 type: "percent", 145 def: 1 146 }; 147}); 148 149function clamp( value, prop, allowEmpty ) { 150 var type = propTypes[ prop.type ] || {}; 151 152 if ( value == null ) { 153 return (allowEmpty || !prop.def) ? null : prop.def; 154 } 155 156 // ~~ is an short way of doing floor for positive numbers 157 value = type.floor ? ~~value : parseFloat( value ); 158 159 // IE will pass in empty strings as value for alpha, 160 // which will hit this case 161 if ( isNaN( value ) ) { 162 return prop.def; 163 } 164 165 if ( type.mod ) { 166 // we add mod before modding to make sure that negatives values 167 // get converted properly: -10 -> 350 168 return (value + type.mod) % type.mod; 169 } 170 171 // for now all property types without mod have min and max 172 return 0 > value ? 0 : type.max < value ? type.max : value; 173} 174 175function stringParse( string ) { 176 var inst = color(),
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177 rgba = inst._rgba = []; 178 179 string = string.toLowerCase(); 180 181 each( stringParsers, function( i, parser ) { 182 var parsed, 183 match = parser.re.exec( string ), 184 values = match && parser.parse( match ), 185 spaceName = parser.space || "rgba"; 186 187 if ( values ) { 188 parsed = inst[ spaceName ]( values ); 189 190 // if this was an rgba parse the assignment might happen twice 191 // oh well.... 192 inst[ spaces[ spaceName ].cache ] = parsed[ spaces[ spaceName ].cache ]; 193 rgba = inst._rgba = parsed._rgba; 194 195 // exit each( stringParsers ) here because we matched 196 return false; 197 } 198 }); 199 200 // Found a stringParser that handled it 201 if ( rgba.length ) { 202 203 // if this came from a parsed string, force "transparent" when alpha is 0 204 // chrome, (and maybe others) return "transparent" as rgba(0,0,0,0) 205 if ( rgba.join() === "0,0,0,0" ) { 206 jQuery.extend( rgba, colors.transparent ); 207 } 208 return inst; 209 } 210 211 // named colors 212 return colors[ string ]; 213} 214 215color.fn = jQuery.extend( color.prototype, { 216 parse: function( red, green, blue, alph
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216a ) { 217 if ( red === undefined ) { 218 this._rgba = [ null, null, null, null ]; 219 return this; 220 } 221 if ( red.jquery || red.nodeType ) { 222 red = jQuery( red ).css( green ); 223 green = undefined; 224 } 225 226 var inst = this, 227 type = jQuery.type( red ), 228 rgba = this._rgba = [], 229 source; 230 231 // more than 1 argument specified - assume ( red, green, blue, alpha ) 232 if ( green !== undefined ) { 233 red = [ red, green, blue, alpha ]; 234 type = "array"; 235 } 236 237 if ( type === "string" ) { 238 return this.parse( stringParse( red ) || colors._default ); 239 } 240 241 if ( type === "array" ) { 242 each( spaces.rgba.props, function( key, prop ) { 243 rgba[ prop.idx ] = clamp( red[ prop.idx ], prop ); 244 }); 245 return this; 246 } 247 248 if ( type === "object" ) { 249 if ( red instanceof color ) { 250 each( spaces, function( spaceName, space ) { 251 if ( red[ space.cache ] ) { 252 inst[ space.cache ] = red[ space.cache ].slice(); 253 } 254 }); 255 } else { 256 each( spaces, function( spaceName, space ) { 257 var cache = space.cache; 258 each( space.props, function( key, prop ) { 259 260 // if the cache doesn't exist, and we know how to convert 261 if ( !inst[ cache ] && space.to ) { 262 263 // if the value was null, we don't need to copy it 264 // if the key was alpha, we don't need to copy it either 265 if ( key === "alpha" || red[ key ] == null ) { 266 return; 267 } 268 inst[ cache ] = space.to( inst._rgba ); 269 } 270 271 // this is the only case where we allow nulls for ALL properties. 272 // call clamp with alwaysAllowEmpty 273 inst[ cache ][ prop.idx ] = clamp( red[ key ], prop, true ); 274 }); 275 276 // everything defined but alpha? 277 if ( inst[ cache ] && jQuery.inArray( null, inst[ cache ].slice( 0, 3 ) ) < 0 ) { 278 // use the default of 1 279 inst[ cache ][ 3 ] = 1; 280 if ( space.from ) { 281 inst._rgba = space.from( inst[ cache ] ); 282 } 283 } 284 }); 285 } 286 return this; 287 } 288 }, 289 is: function( compare ) { 290 var is = color( compare ), 291 same = true, 292 inst = this; 293 294 each( spaces, function( _, space ) { 295 var localCache, 296 isCache = is[ space.cache ]; 297 if (isCache) { 298 localCache = inst[ space.cache ] || space.to && space.to( inst._rgba ) || []; 299 each( space.props, function( _, prop ) { 300 if ( isCache[ prop.idx ] != null ) { 301 same = ( isCache[ prop.idx ] === localCache[ prop.idx ] ); 302 return same; 303 } 304 }); 305 } 306 return same; 307 }); 308 return same; 309 }, 310 _space: function() { 311 var used = [], 312 inst = this; 313 each( spaces, function( spaceName, space ) { 314 if ( inst[ space.cache ] ) { 315 used.push( spaceName ); 316 } 317 }); 318 return used.pop(); 319 }, 320 transition: function( other, distance ) { 321 var end = color( other ), 322 spaceName = end._space(), 323 space = spaces[ spaceName ], 324 startColor = this.alpha() === 0 ? color( "transparent" ) : this, 325 start = startColor[ space.cache ] || space.to( startColor._rgba ), 326 result = start.slice(); 327 328 end = end[ space.cache ]; 329 each( space.props, function( key, prop ) { 330 var index = prop.idx, 331 startValue = start[ index ], 332 endValue = end[ index ], 333 type = propTypes[ prop.type ] || {}; 334 335 // if null, don't override start value 336 if ( endValue === null ) { 337 return; 338 } 339 // if null - use end 340 if ( startValue === null ) { 341 result[ index ] = endValue; 342 } else { 343 if ( type.mod ) { 344 if ( endValue - startValue > type.mod / 2 ) { 345 startValue += type.mod; 346 } else if ( startValue - endValue > type.mod / 2 ) { 347 startValue -= type.mod; 348 } 349 } 350 result[ index ] = clamp( ( endValue - startValue ) * distance + startValue, prop ); 351 } 352 }); 353 return this[ spaceName ]( result ); 354 }, 355 blend: function( opaque ) { 356 // if we are already opaque - return ourself 357 if ( this._rgba[ 3 ] === 1 ) { 358 return this; 359 } 360 361 var rgb = this._rgba.slice(), 362 a = rgb.pop(), 363 blend = color( opaque )._rgba; 364 365 return color( jQuery.map( rgb, function( v, i ) { 366 return ( 1 - a ) * blend[ i ] + a * v; 367 })); 368 }, 369 toRgbaString: function() { 370 var prefix = "rgba(", 371 rgba = jQuery.map( this._rgba, function( v, i ) { 372 return v == null ? ( i > 2 ? 1 : 0 ) : v; 373 }); 374 375 if ( rgba[ 3 ] === 1 ) { 376 rgba.pop(); 377 prefix = "rgb("; 378 } 379 380 return prefix + rgba.join() + ")"; 381 }, 382 toHslaString: function() { 383 var prefix = "hsla(", 384 hsla = jQuery.map( this.hsla(), function( v, i ) { 385 if ( v == null ) { 386 v = i > 2 ? 1 : 0; 387 } 388 389 // catch 1 and 2 390 if ( i && i < 3 ) { 391 v = Math.round( v * 100 ) + "%"; 392 } 393 return v; 394 }); 395 396 if ( hsla[ 3 ] === 1 ) { 397 hsla.pop(); 398 prefix = "hsl("; 399 } 400 return prefix + hsla.join() + ")"; 401 }, 402 toHexString: function( includeAlpha ) { 403 var rgba = this._rgba.slice(), 404 alpha = rgba.pop(); 405 406 if ( includeAlpha ) { 407 rgba.push( ~~( alpha * 255 ) ); 408 } 409 410 return "#" + jQuery.map( rgba, function( v, i ) { 411 412 // default to 0 when nulls exist 413 v = ( v || 0 ).toString( 16 ); 414 return v.length === 1 ? "0" + v : v; 415 }).join(""); 416 }, 417 toString: function() { 418 return this._rgba[ 3 ] === 0 ? "transparent" : this.toRgbaString(); 419 } 420}); 421color.fn.parse.prototype = color.fn; 422 423// hsla conversions adapted from: 424// https://code.google.com/p/maashaack/source/browse/packages/graphics/trunk/src/graphics/colors/HUE2RGB.as?r=5021 425 426function hue2rgb( p, q, h ) { 427 h = ( h + 1 ) % 1; 428 if ( h * 6 < 1 ) { 429 return p + (q - p) * h * 6; 430 } 431 if ( h * 2 < 1) { 432 return q; 433 } 434 if ( h * 3 < 2 ) { 435 return p + (q - p) * ((2/3) - h) * 6; 436 } 437 return p; 438} 439 440spaces.hsla.to = function ( rgba ) { 441 if ( rgba[ 0 ] == null || rgba[ 1 ] == null || rgba[ 2 ] == null ) { 442 return [ null, null, null, rgba[ 3 ] ]; 443 } 444 var r = rgba[ 0 ] / 255, 445 g = rgba[ 1 ] / 255, 446 b = rgba[ 2 ] / 255, 447 a = rgba[ 3 ], 448 max = Math.max( r, g, b ), 449 min = Math.min( r, g, b ), 450 diff = max - min, 451 add = max + min, 452 l = add * 0.5, 453 h, s; 454 455 if ( min === max ) { 456 h = 0; 457 } else if ( r === max ) { 458 h = ( 60 * ( g - b ) / diff ) + 360; 459 } else if ( g === max ) { 460 h = ( 60 * ( b - r ) / diff ) + 120; 461 } else { 462 h = ( 60 * ( r - g ) / diff ) + 240; 463 } 464 465 if ( l === 0 || l === 1 ) { 466 s = l; 467 } else if ( l <= 0.5 ) { 468 s = diff / add; 469 } else { 470 s = diff / ( 2 - add ); 471 } 472 return [ Math.round(h) % 360, s, l, a == null ? 1 : a ]; 473}; 474 475spaces.hsla.from = function ( hsla ) { 476 if ( hsla[ 0 ] == null || hsla[ 1 ] == null || hsla[ 2 ] == null ) { 477 return [ null, null, null, hsla[ 3 ] ]; 478 } 479 var h = hsla[ 0 ] / 360, 480 s = hsla[ 1 ], 481 l = hsla[ 2 ], 482 a = hsla[ 3 ], 483 q = l <= 0.5 ? l * ( 1 + s ) : l + s - l * s, 484 p = 2 * l - q, 485 r, g, b; 486 487 return [ 488 Math.round( hue2rgb( p, q, h + ( 1 / 3 ) ) * 255 ), 489 Math.round( hue2rgb( p, q, h ) * 255 ), 490 Math.round( hue2rgb( p, q, h - ( 1 / 3 ) ) * 255 ), 491 a 492 ]; 493}; 494 495 496each( spaces, function( spaceName, space ) { 497 var props = space.props, 498 cache = space.cache, 499 to = space.to, 500 from = space.from; 501 502 // makes rgba() and hsla() 503 color.fn[ spaceName ] = function( value ) { 504 505 // generate a cache for this space if it doesn't exist 506 if ( to && !this[ cache ] ) { 507 this[ cache ] = to( this._rgba ); 508 } 509 if ( value === undefined ) { 510 return this[ cache ].slice(); 511 } 512 513 var ret, 514 type = jQuery.type( value ), 515 arr = ( type === "array" || type === "object" ) ? value : arguments, 516 local = this[ cache ].slice(); 517 518 each( props, function( key, prop ) { 519 var val = arr[ type === "object" ? key : prop.idx ]; 520 if ( val == null ) { 521 val = local[ prop.idx ]; 522 } 523 local[ prop.idx ] = clamp( val, prop ); 524 }); 525 526 if ( from ) { 527 ret = color( from( local ) ); 528 ret[ cache ] = local; 529 return ret; 530 } else { 531 return color( local ); 532 } 533 }; 534 535 // makes red() green() blue() alpha() hue() saturation() lightness() 536 each( props, function( key, prop ) { 537 // alpha is included in more than one space 538 if ( color.fn[ key ] ) { 539 return; 540 } 541 color.fn[ key ] = function( value ) { 542 var vtype = jQuery.type( value ), 543 fn = ( key === "alpha" ? ( this._hsla ? "hsla" : "rgba" ) : spaceName ), 544 local = this[ fn ](), 545 cur = local[ prop.idx ], 546 match; 547 548 if ( vtype === "undefined" ) { 549 return cur; 550 } 551 552 if ( vtype === "function" ) { 553 value = value.call( this, cur ); 554 vtype = jQuery.type( value ); 555 } 556 if ( value == null && prop.empty ) { 557 return this; 558 } 559 if ( vtype === "string" ) { 560 match = rplusequals.exec( value ); 561 if ( match ) { 562 value = cur + parseFloat( match[ 2 ] ) * ( match[ 1 ] === "+" ? 1 : -1 ); 563 } 564 } 565 local[ prop.idx ] = value; 566 return this[ fn ]( local ); 567 }; 568 }); 569}); 570 571// add cssHook and .fx.step function for each named hook. 572// accept a space separated string of properties 573color.hook = function( hook ) { 574 var hooks = hook.split( " " ); 575 each( hooks, function( i, hook ) { 576 jQuery.cssHooks[ hook ] = { 577 set: function( elem, value ) { 578 var parsed, curElem, 579 backgroundColor = ""; 580 581 if ( jQuery.type( value ) !== "string" || ( parsed = stringParse( value ) ) ) { 582 value = color( parsed || value ); 583 if ( !support.rgba && value._rgba[ 3 ] !== 1 ) { 584 curElem = hook === "backgroundColor" ? elem.parentNode : elem; 585 while ( 586 (backgroundColor === "" || backgroundColor === "transparent") && 587 curElem && curElem.style 588 ) { 589 try { 590 backgroundColor = jQuery.css( curElem, "backgroundColor" ); 591 curElem = curElem.parentNode; 592 } catch ( e ) { 593 } 594 } 595 596 value = value.blend( backgroundColor && backgroundColor !== "transparent" ? 597 backgroundColor : 598 "_default" ); 599 } 600 601 value = value.toRgbaString(); 602 } 603 try { 604 elem.style[ hook ] = value; 605 } catch( value ) { 606 // wrapped to prevent IE from throwing errors on "invalid" values like 'auto' or 'inherit' 607 } 608 } 609 }; 610 jQuery.fx.step[ hook ] = function( fx ) { 611 if ( !fx.colorInit ) { 612 fx.start = color( fx.elem, hook ); 613 fx.end = color( fx.end ); 614 fx.colorInit = true; 615 } 616 jQuery.cssHooks[ hook ].set( fx.elem, fx.start.transition( fx.end, fx.pos ) ); 617 }; 618 }); 619 620}; 621 622color.hook( stepHooks ); 623 624jQuery.cssHooks.borderColor = { 625 expand: function( value ) { 626 var expanded = {}; 627 628 each( [ "Top", "Right", "Bottom", "Left" ], function( i, part ) { 629 expanded[ "border" + part + "Color" ] = value; 630 }); 631 return expanded; 632 } 633}; 634 635// Basic color names only. 636// Usage of any of the other color names requires adding yourself or including 637// jquery.color.svg-names.js. 638colors = jQuery.Color.names = { 639 // 4.1. Basic color keywords 640 aqua: "#00ffff", 641 black: "#000000", 642 blue: "#0000ff", 643 fuchsia: "#ff00ff", 644 gray: "#808080", 645 green: "#008000", 646 lime: "#00ff00", 647 maroon: "#800000", 648 navy: "#000080", 649 olive: "#808000", 650 purple: "#800080", 651 red: "#ff0000", 652 silver: "#c0c0c0", 653 teal: "#008080", 654 white: "#ffffff", 655 yellow: "#ffff00", 656 657 // 4.2.3. âtransparentâ color keyword 658 transparent: [ null, null, null, 0 ], 659 660 _default: "#ffffff" 661}; 662 663})( jQuery );
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