1/*!jQuery Knob*/� 2/**� 3 * Downward compatible, touchable dial� 4 *� 5 * Version: 1.2.0 (15/07/2012)� 6 * Requires: jQuery v1.7+� 7 *� 8 * Copyright (c) 2012 Anthony Terrien� 9 * Under MIT and GPL licenses:� 10 * http://www.opensource.org/licenses/mit-license.php� 11 * http://www.gnu.org/licenses/gpl.html� 12 *� 13 * Thanks to vor, eskimoblood, spiffistan, FabrizioC� 14 */� 15(function($) {� 16� 17 /**� 18 * Kontrol library� 19 */� 20 "use strict";� 21� 22 /**� 23 * Definition of globals and core� 24 */� 25 var k = {}, // kontrol� 26 max = Math.max,� 27 min = Math.min;� 28� 29 k.c = {};� 30 k.c.d = $(document);� 31 k.c.t = function (e) {� 32 return e.originalEvent.touches.length - 1;� 33 };� 34� 35 /**� 36 * Kontrol Object� 37 *� 38 * Definition of an abstract UI control� 39 *� 40 * Each concrete component must call this one.� 41 * <code>� 42 * k.o.call(this);� 43 * </code>� 44 */� 45 k.o = function () {� 46 var s = this;� 47� 48 this.o = null; // array of options� 49 this.$ = null; // jQuery wrapped element� 50 this.i = null; // mixed HTMLInputElement or array of HTMLInputElement� 51 this.g = null; // deprecated 2D graphics context for 'pre-rendering'� 52 this.v = null; // value ; mixed array or integer� 53 this.cv = null; // change value ; not commited value� 54 this.x = 0; // canvas x position� 55 this.y = 0; // canvas y position� 56 this.w = 0; // canvas width� 57 this.h = 0; // canvas height� 58 this.$c = null; // jQuery canvas element� 59 this.c = null; // rendered canvas context� 60 this.t = 0; // touches index� 61 this.isInit = false;� 62 this.fgColor = null; // main color� 63 this.pColor = null; // previous color� 64 this.dH = null; // draw hook� 65 this.cH = null; // change hook� 66 this.eH = null; // cancel hook� 67 this.rH = null; // release hook� 68 this.scale = 1; // scale factor� 69 this.relative = false;� 70 this.relativeWidth = false;� 71 this.relativeHeight = false;� 72 this.$div = null; // component div� 73� 74 this.run = function () {� 75 var cf = function (e, conf) {� 76 var k;� 77 for (k in conf) {� 78 s.o[k] = conf[k];� 79 }� 80 s.init();� 81 s._configure()� 82 ._draw();� 83 };� 84� 85 if(this.$.data('kontroled')) return;� 86 this.$.data('kontroled', true);� 87� 88 this.extend();� 89 this.o = $.extend(� 90 {� 91 // Config� 92 min : this.$.data('min') || 0,� 93 max : this.$.data('max') || 100,� 94 stopper : true,� 95 readOnly : this.$.data('readonly') || (this.$.attr('readonly') == 'readonly'),� 96� 97 // UI� 98 cursor : (this.$.data('cursor') === true && 30)� 99 || this.$.data('cursor')� 100 || 0,� 101 thickness : (� 102 this.$.data('thickness')� 103 && Math.max(Math.min(this.$.data('thickness'), 1), 0.01)� 104 )� 105 || 0.35,� 106 lineCap : this.$.data('linecap') || 'butt',� 107 width : this.$.data('width') || 200,� 108 height : this.$.data('height') || 200,� 109 displayInput : this.$.data('displayinput') == null || this.$.data('displayinput'),� 110 displayPrevious : this.$.data('displayprevious'),� 111 fgColor : this.$.data('fgcolor') || '#87CEEB',� 112 inputColor: this.$.data('inputcolor'),� 113 font: this.$.data('font') || 'Arial',� 114 fontWeight: this.$.data('font-weight') || 'bold',� 115 inline : false,� 116 step : this.$.data('step') || 1,� 117� 118 // Hooks� 119 draw : null, // function () {}� 120 change : null, // function (value) {}� 121 cancel : null, // function () {}� 122 release : null, // function (value) {}� 123 error : null // function () {}� 124 }, this.o� 125 );� 126� 127 // finalize options� 128 if(!this.o.inputColor) {� 129 this.o.inputColor = this.o.fgColor;� 130 }� 131� 132 // routing value� 133 if(this.$.is('fieldset')) {� 134� 135 // fieldset = array of integer� 136 this.v = {};� 137 this.i = this.$.find('input')� 138 this.i.each(function(k) {� 139 var $this = $(this);� 140 s.i[k] = $this;� 141 s.v[k] = $this.val();� 142� 143 $this.bind(� 144 'change keyup'� 145 , function () {� 146 var val = {};� 147 val[k] = $this.val();� 148 s.val(val);� 149 }� 150 );� 151 });� 152 this.$.find('legend').remove();� 153� 154 } else {� 155� 156 // input = integer� 157 this.i = this.$;� 158 this.v = this.$.val();� 159 (this.v == '') && (this.v = this.o.min);� 160� 161 this.$.bind(� 162 'change keyup'� 163 , function () {� 164 s.val(s._validate(s.$.val()));� 165 }� 166 );� 167� 168 }� 169� 170 (!this.o.displayInput) && this.$.hide();� 171� 172 // adds needed DOM elements (canvas, div)� 173 this.$c = $(document.createElement('canvas'));� 174 if (typeof G_vmlCanvasManager !== 'undefined') {� 175 G_vmlCanvasManager.initElement(this.$c[0]);� 176 }� 177 this.c = this.$c[0].getContext ? this.$c[0].getContext('2d') : null;� 178 if (!this.c) {� 179 this.o.error && this.o.error();� 180 return;� 181 }� 182� 183 // hdpi support� 184 this.scale = (window.devicePixelRatio || 1) /� 185 (� 186 this.c.webkitBackingStorePixelRatio ||� 187 this.c.mozBackingStorePixelRatio ||� 188 this.c.msBackingStorePixelRatio ||� 189 this.c.oBackingStorePixelRatio ||� 190 this.c.backingStorePixelRatio || 1� 191 );� 192� 193 // detects relative width / height� 194 this.relativeWidth = ((this.o.width % 1 !== 0)� 195 && this.o.width.indexOf('%'));� 196 this.relativeHeight = ((this.o.height % 1 !== 0)� 197 && this.o.height.indexOf('%'));� 198� 199 this.relative = (this.relativeWidth || this.relativeHeight);� 200� 201 // wraps all elements in a div�
202 this.$div = $('<div style="'� 203 + (this.o.inline ? 'display:inline;' : '')� 204 + '"></div>');� 205� 206 this.$.wrap(this.$div).before(this.$c);� 207 this.$div = this.$.parent();� 208� 209 // computes size and carves the component� 210 this._carve();� 211� 212 // prepares props for transaction� 213 if (this.v instanceof Object) {� 214 this.cv = {};� 215 this.copy(this.v, this.cv);� 216 } else {� 217 this.cv = this.v;� 218 }� 219� 220 // binds configure event� 221 this.$� 222 .bind("configure", cf)� 223 .parent()� 224 .bind("configure", cf);� 225� 226 // finalize init� 227 this._listen()� 228 ._configure()� 229 ._xy()� 230 .init();� 231� 232 this.isInit = true;� 233� 234 // the most important !� 235 this._draw();� 236� 237 return this;� 238 };� 239� 240 this._carve = function() {� 241 if(this.relative) {� 242 var w = this.relativeWidth� 243 ? this.$div.parent().width()� 244 * parseInt(this.o.width) / 100� 245 : this.$div.parent().width(),� 246 h = this.relativeHeight� 247 ? this.$div.parent().height()� 248 * parseInt(this.o.height) / 100� 249 : this.$div.parent().height();� 250� 251 // apply relative� 252 this.w = this.h = Math.min(w, h);� 253 } else {� 254 this.w = this.o.width;� 255 this.h = this.o.height;� 256 }� 257� 258 // finalize div� 259 this.$div.css({� 260 'width': this.w + 'px',� 261 'height': this.h + 'px'� 262 });� 263� 264 // finalize canvas with computed width� 265 this.$c.attr({� 266 width: this.w,� 267 height: this.h� 268 });� 269� 270 // scaling� 271 if (this.scale !== 1) {� 272 this.$c[0].width = this.$c[0].width * this.scale;� 273 this.$c[0].height = this.$c[0].height * this.scale;� 274 this.$c.width(this.w);� 275 this.$c.height(this.h);� 276 }� 277� 278 return this;� 279 }� 280� 281 this._draw = function () {� 282� 283 // canvas pre-rendering� 284 var d = true;� 285� 286 s.g = s.c;� 287� 288 s.clear();� 289� 290 s.dH� 291 && (d = s.dH());� 292� 293 (d !== false) && s.draw();� 294� 295 };� 296� 297 this._touch = function (e) {� 298� 299 var touchMove = function (e) {� 300� 301 var v = s.xy2val(� 302 e.originalEvent.touches[s.t].pageX,� 303 e.originalEvent.touches[s.t].pageY� 304 );� 305 s.change(s._validate(v));� 306 s._draw();� 307 };� 308� 309 // get touches index� 310 this.t = k.c.t(e);� 311� 312 // First touch� 313 touchMove(e);� 314� 315 // Touch events listeners� 316 k.c.d� 317 .bind("touchmove.k", touchMove)� 318 .bind(� 319 "touchend.k"� 320 , function () {� 321 k.c.d.unbind('touchmove.k touchend.k');� 322� 323 if (� 324 s.rH� 325 && (s.rH(s.cv) === false)� 326 ) return;� 327� 328 s.val(s.cv);� 329 }� 330 );� 331� 332 return this;� 333 };� 334� 335 this._mouse = function (e) {� 336� 337 var mouseMove = function (e) {� 338 var v = s.xy2val(e.pageX, e.pageY);� 339 s.change(s._validate(v));� 340 s._draw();� 341 };� 342� 343 // First click� 344 mouseMove(e);� 345� 346 // Mouse events listeners� 347 k.c.d� 348 .bind("mousemove.k", mouseMove)� 349 .bind(� 350 // Escape key cancel current change� 351 "keyup.k"� 352 , function (e) {� 353 if (e.keyCode === 27) {� 354 k.c.d.unbind("mouseup.k mousemove.k keyup.k");� 355� 356 if (� 357 s.eH� 358 && (s.eH() === false)� 359 ) return;� 360� 361 s.cancel();� 362 }� 363 }� 364 )� 365 .bind(� 366 "mouseup.k"� 367 , function (e) {� 368 k.c.d.unbind('mousemove.k mouseup.k keyup.k');� 369� 370 if (� 371 s.rH� 372 && (s.rH(s.cv) === false)� 373 ) return;� 374� 375 s.val(s.cv);� 376 }� 377 );� 378� 379 return this;� 380 };� 381� 382 this._xy = function () {� 383 var o = this.$c.offset();� 384 this.x = o.left;� 385 this.y = o.top;� 386 return this;� 387 };� 388� 389 this._listen = function () {� 390� 391 if (!this.o.readOnly) {� 392 this.$c� 393 .bind(� 394 "mousedown"� 395 , function (e) {� 396 e.preventDefault();� 397 s._xy()._mouse(e);� 398 }� 399 )� 400 .bind(� 401 "touchstart"� 402 , function (e) {� 403 e.preventDefault();� 404 s._xy()._touch(e);� 405 }� 406 );� 407� 408 this.listen();� 409 } else {� 410 this.$.attr('readonly', 'readonly');� 411 }� 412� 413 if(this.relative) {� 414 $(window).resize(function() {� 415 s._carve()�
416 .init();� 417 s._draw();� 418 });� 419 }� 420� 421 return this;� 422 };� 423� 424 this._configure = function () {� 425� 426 // Hooks� 427 if (this.o.draw) this.dH = this.o.draw;� 428 if (this.o.change) this.cH = this.o.change;� 429 if (this.o.cancel) this.eH = this.o.cancel;� 430 if (this.o.release) this.rH = this.o.release;� 431� 432 if (this.o.displayPrevious) {� 433 this.pColor = this.h2rgba(this.o.fgColor, "0.4");� 434 this.fgColor = this.h2rgba(this.o.fgColor, "0.6");� 435 } else {� 436 this.fgColor = this.o.fgColor;� 437 }� 438� 439 return this;� 440 };� 441� 442 this._clear = function () {� 443 this.$c[0].width = this.$c[0].width;� 444 };� 445� 446 this._validate = function(v) {� 447 return (~~ (((v < 0) ? -0.5 : 0.5) + (v/this.o.step))) * this.o.step;� 448 };� 449� 450 // Abstract methods� 451 this.listen = function () {}; // on start, one time� 452 this.extend = function () {}; // each time configure triggered� 453 this.init = function () {}; // each time configure triggered� 454 this.change = function (v) {}; // on change� 455 this.val = function (v) {}; // on release� 456 this.xy2val = function (x, y) {}; //� 457 this.draw = function () {}; // on change / on release� 458 this.clear = function () { this._clear(); };� 459� 460 // Utils� 461 this.h2rgba = function (h, a) {� 462 var rgb;� 463 h = h.substring(1,7)� 464 rgb = [parseInt(h.substring(0,2),16)� 465 ,parseInt(h.substring(2,4),16)� 466 ,parseInt(h.substring(4,6),16)];� 467 return "rgba(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + "," + a + ")";� 468 };� 469� 470 this.copy = function (f, t) {� 471 for (var i in f) { t[i] = f[i]; }� 472 };� 473 };� 474� 475� 476 /**� 477 * k.Dial� 478 */� 479 k.Dial = function () {� 480 k.o.call(this);� 481� 482 this.startAngle = null;� 483 this.xy = null;� 484 this.radius = null;� 485 this.lineWidth = null;� 486 this.cursorExt = null;� 487 this.w2 = null;� 488 this.PI2 = 2*Math.PI;� 489� 490 this.extend = function () {� 491 this.o = $.extend(� 492 {� 493 bgColor : this.$.data('bgcolor') || '#EEEEEE',� 494 angleOffset : this.$.data('angleoffset') || 0,� 495 angleArc : this.$.data('anglearc') || 360,� 496 inline : true� 497 }, this.o� 498 );� 499 };� 500� 501 this.val = function (v) {� 502 if (null != v) {� 503 this.cv = this.o.stopper ? max(min(v, this.o.max), this.o.min) : v;� 504 this.v = this.cv;� 505 this.$.val(this.v);� 506 this._draw();� 507 } else {� 508 return this.v;� 509 }� 510 };� 511� 512 this.xy2val = function (x, y) {� 513 var a, ret;� 514� 515 a = Math.atan2(� 516 x - (this.x + this.w2)� 517 , - (y - this.y - this.w2)� 518 ) - this.angleOffset;� 519� 520 if(this.angleArc != this.PI2 && (a < 0) && (a > -0.5)) {� 521 // if isset angleArc option, set to min if .5 under min� 522 a = 0;� 523 } else if (a < 0) {� 524 a += this.PI2;� 525 }� 526� 527 ret = ~~ (0.5 + (a * (this.o.max - this.o.min) / this.angleArc))� 528 + this.o.min;� 529� 530 this.o.stopper� 531 && (ret = max(min(ret, this.o.max), this.o.min));� 532� 533 return ret;� 534 };� 535� 536 this.listen = function () {� 537 // bind MouseWheel� 538 var s = this, mwTimerStop, mwTimerRelease,� 539 mw = function (e) {� 540 e.preventDefault();� 541� 542 var ori = e.originalEvent� 543 ,deltaX = ori.detail || ori.wheelDeltaX� 544 ,deltaY = ori.detail || ori.wheelDeltaY� 545 ,v = s._validate(s.$.val())� 546 + (deltaX>0 || deltaY>
vendor: 4,737 bytes, lines 546-665
5460 ? s.o.step : deltaX<0 || deltaY<0 ? -s.o.step : 0);� 547� 548 v = max(min(v, s.o.max), s.o.min);� 549 � 550 s.val(v);� 551� 552 if(s.rH) {� 553 // Handle mousewheel stop� 554 clearTimeout(mwTimerStop);� 555 mwTimerStop = setTimeout(function() {� 556 s.rH(v);� 557 mwTimerStop = null;� 558 }, 100);� 559� 560 // Handle mousewheel releases� 561 if(!mwTimerRelease) {� 562 mwTimerRelease = setTimeout(function() {� 563 if(mwTimerStop) s.rH(v);� 564 mwTimerRelease = null;� 565 }, 200);� 566 }� 567 }� 568 }� 569 , kval, to, m = 1, kv = {37:-s.o.step, 38:s.o.step, 39:s.o.step, 40:-s.o.step};� 570� 571 this.$� 572 .bind(� 573 "keydown"� 574 ,function (e) {� 575 var kc = e.keyCode;� 576� 577 // numpad support� 578 if(kc >= 96 && kc <= 105) {� 579 kc = e.keyCode = kc - 48;� 580 }� 581� 582 kval = parseInt(String.fromCharCode(kc));� 583� 584 if (isNaN(kval)) {� 585� 586 (kc !== 13) // enter� 587 && (kc !== 8) // bs� 588 && (kc !== 9) // tab� 589 && (kc !== 189) // -� 590 && e.preventDefault();� 591� 592 // arrows� 593 if ($.inArray(kc,[37,38,39,40]) > -1) {� 594 e.preventDefault();� 595� 596 var v = parseInt(s.$.val()) + kv[kc] * m;� 597� 598 s.o.stopper� 599 && (v = max(min(v, s.o.max), s.o.min));� 600� 601 s.change(v);� 602 s._draw();� 603� 604 // long time keydown speed-up� 605 to = window.setTimeout(� 606 function () { m*=2; }� 607 ,30� 608 );� 609 }� 610 }� 611 }� 612 )� 613 .bind(� 614 "keyup"� 615 ,function (e) {� 616 if (isNaN(kval)) {� 617 if (to) {� 618 window.clearTimeout(to);� 619 to = null;� 620 m = 1;� 621 s.val(s.$.val());� 622 }� 623 } else {� 624 // kval postcond� 625 (s.$.val() > s.o.max && s.$.val(s.o.max))� 626 || (s.$.val() < s.o.min && s.$.val(s.o.min));� 627 }� 628� 629 }� 630 );� 631� 632 this.$c.bind("mousewheel DOMMouseScroll", mw);� 633 this.$.bind("mousewheel DOMMouseScroll", mw)� 634 };� 635� 636 this.init = function () {� 637� 638 if (� 639 this.v < this.o.min� 640 || this.v > this.o.max� 641 ) this.v = this.o.min;� 642� 643 this.$.val(this.v);� 644 this.w2 = this.w / 2;� 645 this.cursorExt = this.o.cursor / 100;� 646 this.xy = this.w2 * this.scale;� 647 this.lineWidth = this.xy * this.o.thickness;� 648 this.lineCap = this.o.lineCap;� 649 this.radius = this.xy - this.lineWidth / 2;� 650� 651 this.o.angleOffset� 652 && (this.o.angleOffset = isNaN(this.o.angleOffset) ? 0 : this.o.angleOffset);� 653� 654 this.o.angleArc� 655 && (this.o.angleArc = isNaN(this.o.angleArc) ? this.PI2 : this.o.angleArc);� 656� 657 // deg to rad� 658 this.angleOffset = this.o.angleOffset * Math.PI / 180;� 659 this.angleArc = this.o.angleArc * Math.PI / 180;� 660� 661 // compute start and end angles� 662 this.startAngle = 1.5 * Math.PI + this.angleOffset;� 663 this.endAngle = 1.5 * Math.PI + this.angleOffset + this.angleArc;� 664� 665 var s = max(�
666 String(Math.abs(this.o.max)).length� 667 , String(Math.abs(this.o.min)).length� 668 , 2� 669 ) + 2;� 670� 671 this.o.displayInput� 672 && this.i.css({� 673 'width' : ((this.w / 2 + 4) >> 0) + 'px'� 674 ,'height' : ((this.w / 3) >> 0) + 'px'� 675 ,'position' : 'absolute'� 676 ,'vertical-align' : 'middle'� 677 ,'margin-top' : ((this.w / 3) >> 0) + 'px'� 678 ,'margin-left' : '-' + ((this.w * 3 / 4 + 2) >> 0) + 'px'� 679 ,'border' : 0� 680 ,'background' : 'none'� 681 ,'font' : this.o.fontWeight + ' ' + ((this.w / s) >> 0) + 'px ' + this.o.font� 682 ,'text-align' : 'center'� 683 ,'color' : this.o.inputColor || this.o.fgColor� 684 ,'padding' : '0px'� 685 ,'-webkit-appearance': 'none'� 686 })� 687 || this.i.css({� 688 'width' : '0px'� 689 ,'visibility' : 'hidden'� 690 });� 691 };� 692� 693 this.change = function (v) {� 694 if (v == this.cv) return;� 695 this.cv = v;� 696 if (� 697 this.cH� 698 && (this.cH(v) === false)� 699 ) return;� 700 };� 701� 702 this.angle = function (v) {� 703 return (v - this.o.min) * this.angleArc / (this.o.max - this.o.min);� 704 };� 705� 706 this.draw = function () {� 707� 708 var c = this.g, // context� 709 a = this.angle(this.cv) // Angle� 710 , sat = this.startAngle // Start angle� 711 , eat = sat + a // End angle� 712 , sa, ea // Previous angles� 713 , r = 1;� 714� 715 c.lineWidth = this.lineWidth;� 716� 717 c.lineCap = this.lineCap;� 718� 719 this.o.cursor� 720 && (sat = eat - this.cursorExt)� 721 && (eat = eat + this.cursorExt);� 722� 723 c.beginPath();� 724 c.strokeStyle = this.o.bgColor;� 725 c.arc(this.xy, this.xy, this.radius, this.endAngle - 0.00001, this.startAngle + 0.00001, true);� 726 c.stroke();� 727� 728 if (this.o.displayPrevious) {� 729 ea = this.startAngle + this.angle(this.v);� 730 sa = this.startAngle;� 731 this.o.cursor� 732 && (sa = ea - this.cursorExt)� 733 && (ea = ea + this.cursorExt);� 734� 735 c.beginPath();� 736 c.strokeStyle = this.pColor;� 737 c.arc(this.xy, this.xy, this.radius, sa - 0.00001, ea + 0.00001, false);� 738 c.stroke();� 739 r = (this.cv == this.v);� 740 }� 741� 742 c.beginPath();� 743 c.strokeStyle = r ? this.o.fgColor : this.fgColor ;� 744 c.arc(this.xy, this.xy, this.radius, sat - 0.00001, eat + 0.00001, false);� 745 c.stroke();� 746 };� 747� 748 this.cancel = function () {� 749 this.val(this.v);� 750 };� 751 };� 752� 753 $.fn.dial = $.fn.knob = function (o) {� 754 return this.each(� 755 function () {� 756 var d = new k.Dial();� 757 d.o = o;� 758 d.$ = $(this);� 759 d.run();� 760 }� 761 ).parent();� 762 };� 763� 764})(jQuery);�
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