git.roojs.org Git - roojs1/blob - Roo/bootstrap/UploadCropbox.js

   1
   2 /*
   3 * Licence: LGPL
   4 */
   5
   6 /**
   7  * @class Roo.bootstrap.UploadCropbox
   8  * @extends Roo.bootstrap.Component
   9  * Bootstrap UploadCropbox class
  10  * @cfg {String} emptyText show when image has been loaded
  11  * @cfg {String} rotateNotify show when image too small to rotate
  12  * @cfg {Number} errorTimeout default 3000
  13  * @cfg {Number} minWidth default 300
  14  * @cfg {Number} minHeight default 300
  15  * @cfg {Array} buttons default ['rotateLeft', 'pictureBtn', 'rotateRight']
  16  * @cfg {Boolean} isDocument (true|false) default false
  17  * @cfg {String} url action url
  18  * @cfg {String} paramName default 'imageUpload'
  19  * @cfg {String} method default POST
  20  *
  21  * @constructor
  22  * Create a new UploadCropbox
  23  * @param {Object} config The config object
  24  */
  25
  26 Roo.bootstrap.UploadCropbox = function(config){
  27     Roo.bootstrap.UploadCropbox.superclass.constructor.call(this, config);
  28
  29     this.addEvents({
  30         /**
  31          * @event beforeselectfile
  32          * Fire before select file
  33          * @param {Roo.bootstrap.UploadCropbox} this
  34          */
  35         "beforeselectfile" : true,
  36         /**
  37          * @event initial
  38          * Fire after initEvent
  39          * @param {Roo.bootstrap.UploadCropbox} this
  40          */
  41         "initial" : true,
  42         /**
  43          * @event crop
  44          * Fire after initEvent
  45          * @param {Roo.bootstrap.UploadCropbox} this
  46          * @param {String} data
  47          */
  48         "crop" : true,
  49         /**
  50          * @event prepare
  51          * Fire when preparing the file data
  52          * @param {Roo.bootstrap.UploadCropbox} this
  53          * @param {Object} file
  54          */
  55         "prepare" : true,
  56         /**
  57          * @event exception
  58          * Fire when get exception
  59          * @param {Roo.bootstrap.UploadCropbox} this
  60          * @param {XMLHttpRequest} xhr
  61          */
  62         "exception" : true,
  63         /**
  64          * @event beforeloadcanvas
  65          * Fire before load the canvas
  66          * @param {Roo.bootstrap.UploadCropbox} this
  67          * @param {String} src
  68          */
  69         "beforeloadcanvas" : true,
  70         /**
  71          * @event trash
  72          * Fire when trash image
  73          * @param {Roo.bootstrap.UploadCropbox} this
  74          */
  75         "trash" : true,
  76         /**
  77          * @event download
  78          * Fire when download the image
  79          * @param {Roo.bootstrap.UploadCropbox} this
  80          */
  81         "download" : true,
  82         /**
  83          * @event footerbuttonclick
  84          * Fire when footerbuttonclick
  85          * @param {Roo.bootstrap.UploadCropbox} this
  86          * @param {String} type
  87          */
  88         "footerbuttonclick" : true,
  89         /**
  90          * @event resize
  91          * Fire when resize
  92          * @param {Roo.bootstrap.UploadCropbox} this
  93          */
  94         "resize" : true,
  95         /**
  96          * @event rotate
  97          * Fire when rotate the image
  98          * @param {Roo.bootstrap.UploadCropbox} this
  99          * @param {String} pos
 100          */
 101         "rotate" : true,
 102         /**
 103          * @event inspect
 104          * Fire when inspect the file
 105          * @param {Roo.bootstrap.UploadCropbox} this
 106          * @param {Object} file
 107          */
 108         "inspect" : true,
 109         /**
 110          * @event upload
 111          * Fire when xhr upload the file
 112          * @param {Roo.bootstrap.UploadCropbox} this
 113          * @param {Object} data
 114          */
 115         "upload" : true,
 116         /**
 117          * @event arrange
 118          * Fire when arrange the file data
 119          * @param {Roo.bootstrap.UploadCropbox} this
 120          * @param {Object} formData
 121          */
 122         "arrange" : true
 123     });
 124
 125     this.buttons = this.buttons || Roo.bootstrap.UploadCropbox.footer.STANDARD;
 126 };
 127
 128 Roo.extend(Roo.bootstrap.UploadCropbox, Roo.bootstrap.Component,  {
 129
 130     emptyText : 'Click to upload image',
 131     rotateNotify : 'Image is too small to rotate',
 132     errorTimeout : 3000,
 133     scale : 0,
 134     baseScale : 1,
 135     rotate : 0,
 136     dragable : false,
 137     pinching : false,
 138     mouseX : 0,
 139     mouseY : 0,
 140     cropData : false,
 141     minWidth : 300,
 142     minHeight : 300,
 143     file : false,
 144     exif : {},
 145     baseRotate : 1,
 146     cropType : 'image/jpeg',
 147     buttons : false,
 148     canvasLoaded : false,
 149     isDocument : false,
 150     method : 'POST',
 151     paramName : 'imageUpload',
 152
 153     getAutoCreate : function()
 154     {
 155         var cfg = {
 156             tag : 'div',
 157             cls : 'roo-upload-cropbox',
 158             cn : [
 159                 {
 160                     tag : 'div',
 161                     cls : 'roo-upload-cropbox-body',
 162                     style : 'cursor:pointer',
 163                     cn : [
 164                         {
 165                             tag : 'input',
 166                             cls : 'roo-upload-cropbox-selector',
 167                             type : 'file'
 168                         },
 169                         {
 170                             tag : 'div',
 171                             cls : 'roo-upload-cropbox-preview'
 172                         },
 173                         {
 174                             tag : 'div',
 175                             cls : 'roo-upload-cropbox-thumb'
 176                         },
 177                         {
 178                             tag : 'div',
 179                             cls : 'roo-upload-cropbox-empty-notify',
 180                             html : this.emptyText
 181                         },
 182                         {
 183                             tag : 'div',
 184                             cls : 'roo-upload-cropbox-error-notify alert alert-danger',
 185                             html : this.rotateNotify
 186                         }
 187                     ]
 188                 },
 189                 {
 190                     tag : 'div',
 191                     cls : 'roo-upload-cropbox-footer',
 192                     cn : {
 193                         tag : 'div',
 194                         cls : 'btn-group btn-group-justified roo-upload-cropbox-btn-group',
 195                         cn : []
 196                     }
 197                 }
 198             ]
 199         };
 200
 201         return cfg;
 202     },
 203
 204     onRender : function(ct, position)
 205     {
 206         Roo.bootstrap.UploadCropbox.superclass.onRender.call(this, ct, position);
 207
 208         if (this.buttons.length) {
 209
 210             Roo.each(this.buttons, function(bb) {
 211
 212                 var btn = this.el.select('.roo-upload-cropbox-footer div.roo-upload-cropbox-btn-group').first().createChild(bb);
 213
 214                 btn.on('click', this.onFooterButtonClick.createDelegate(this, [bb.action], true));
 215
 216             }, this);
 217         }
 218     },
 219
 220     initEvents : function()
 221     {
 222         this.urlAPI = (window.createObjectURL && window) ||
 223                                 (window.URL && URL.revokeObjectURL && URL) ||
 224                                 (window.webkitURL && webkitURL);
 225
 226         this.bodyEl = this.el.select('.roo-upload-cropbox-body', true).first();
 227         this.bodyEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 228
 229         this.selectorEl = this.el.select('.roo-upload-cropbox-selector', true).first();
 230         this.selectorEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 231         this.selectorEl.hide();
 232
 233         this.previewEl = this.el.select('.roo-upload-cropbox-preview', true).first();
 234         this.previewEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 235
 236         this.thumbEl = this.el.select('.roo-upload-cropbox-thumb', true).first();
 237         this.thumbEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 238         this.thumbEl.hide();
 239
 240         this.notifyEl = this.el.select('.roo-upload-cropbox-empty-notify', true).first();
 241         this.notifyEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 242
 243         this.errorEl = this.el.select('.roo-upload-cropbox-error-notify', true).first();
 244         this.errorEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 245         this.errorEl.hide();
 246
 247         this.footerEl = this.el.select('.roo-upload-cropbox-footer', true).first();
 248         this.footerEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 249         this.footerEl.hide();
 250
 251         this.setThumbBoxSize();
 252
 253         this.bind();
 254
 255         this.resize();
 256
 257         this.fireEvent('initial', this);
 258     },
 259
 260     bind : function()
 261     {
 262         var _this = this;
 263
 264         window.addEventListener("resize", function() { _this.resize(); } );
 265
 266         this.bodyEl.on('click', this.beforeSelectFile, this);
 267
 268         if(Roo.isTouch){
 269             this.bodyEl.on('touchstart', this.onTouchStart, this);
 270             this.bodyEl.on('touchmove', this.onTouchMove, this);
 271             this.bodyEl.on('touchend', this.onTouchEnd, this);
 272         }
 273
 274         if(!Roo.isTouch){
 275             this.bodyEl.on('mousedown', this.onMouseDown, this);
 276             this.bodyEl.on('mousemove', this.onMouseMove, this);
 277             var mousewheel = (/Firefox/i.test(navigator.userAgent))? 'DOMMouseScroll' : 'mousewheel';
 278             this.bodyEl.on(mousewheel, this.onMouseWheel, this);
 279             Roo.get(document).on('mouseup', this.onMouseUp, this);
 280         }
 281
 282         this.selectorEl.on('change', this.onFileSelected, this);
 283     },
 284
 285     reset : function()
 286     {
 287         this.scale = 0;
 288         this.baseScale = 1;
 289         this.rotate = 0;
 290         this.baseRotate = 1;
 291         this.dragable = false;
 292         this.pinching = false;
 293         this.mouseX = 0;
 294         this.mouseY = 0;
 295         this.cropData = false;
 296         this.notifyEl.dom.innerHTML = this.emptyText;
 297
 298         this.selectorEl.dom.value = '';
 299
 300     },
 301
 302     resize : function()
 303     {
 304         if(this.fireEvent('resize', this) != false){
 305             this.setThumbBoxPosition();
 306             this.setCanvasPosition();
 307         }
 308     },
 309
 310     onFooterButtonClick : function(e, el, o, type)
 311     {
 312         switch (type) {
 313             case 'rotate-left' :
 314                 this.onRotateLeft(e);
 315                 break;
 316             case 'rotate-right' :
 317                 this.onRotateRight(e);
 318                 break;
 319             case 'picture' :
 320                 this.beforeSelectFile(e);
 321                 break;
 322             case 'trash' :
 323                 this.trash(e);
 324                 break;
 325             case 'crop' :
 326                 this.crop(e);
 327                 break;
 328             case 'download' :
 329                 this.download(e);
 330                 break;
 331             default :
 332                 break;
 333         }
 334
 335         this.fireEvent('footerbuttonclick', this, type);
 336     },
 337
 338     beforeSelectFile : function(e)
 339     {
 340         e.preventDefault();
 341
 342         if(this.fireEvent('beforeselectfile', this) != false){
 343             this.selectorEl.dom.click();
 344         }
 345     },
 346
 347     onFileSelected : function(e)
 348     {
 349         e.preventDefault();
 350
 351         if(typeof(this.selectorEl.dom.files) == 'undefined' || !this.selectorEl.dom.files.length){
 352             return;
 353         }
 354
 355         var file = this.selectorEl.dom.files[0];
 356
 357         if(this.fireEvent('inspect', this, file) != false){
 358             this.prepare(file);
 359         }
 360
 361     },
 362
 363     trash : function(e)
 364     {
 365         this.fireEvent('trash', this);
 366     },
 367
 368     download : function(e)
 369     {
 370         this.fireEvent('download', this);
 371     },
 372
 373     loadCanvas : function(src)
 374     {
 375         if(this.fireEvent('beforeloadcanvas', this, src) != false){
 376
 377             this.reset();
 378
 379             this.imageEl = document.createElement('img');
 380
 381             var _this = this;
 382
 383             this.imageEl.addEventListener("load", function(){ _this.onLoadCanvas(); });
 384
 385             this.imageEl.src = src;
 386         }
 387     },
 388
 389     onLoadCanvas : function()
 390     {
 391         this.imageEl.OriginWidth = this.imageEl.naturalWidth || this.imageEl.width;
 392         this.imageEl.OriginHeight = this.imageEl.naturalHeight || this.imageEl.height;
 393
 394         this.bodyEl.un('click', this.beforeSelectFile, this);
 395
 396         this.notifyEl.hide();
 397         this.thumbEl.show();
 398         this.footerEl.show();
 399
 400         this.baseRotateLevel();
 401
 402         if(this.isDocument){
 403             this.setThumbBoxSize();
 404         }
 405
 406         this.setThumbBoxPosition();
 407
 408         this.baseScaleLevel();
 409
 410         this.draw();
 411
 412         this.resize();
 413
 414         this.canvasLoaded = true;
 415
 416     },
 417
 418     setCanvasPosition : function()
 419     {
 420         if(!this.canvasEl){
 421             return;
 422         }
 423
 424         var pw = Math.ceil((this.bodyEl.getWidth() - this.canvasEl.width) / 2);
 425         var ph = Math.ceil((this.bodyEl.getHeight() - this.canvasEl.height) / 2);
 426
 427         this.previewEl.setLeft(pw);
 428         this.previewEl.setTop(ph);
 429
 430     },
 431
 432     onMouseDown : function(e)
 433     {
 434         e.stopEvent();
 435
 436         this.dragable = true;
 437         this.pinching = false;
 438
 439         if(this.isDocument && (this.canvasEl.width < this.thumbEl.getWidth() || this.canvasEl.height < this.thumbEl.getHeight())){
 440             this.dragable = false;
 441             return;
 442         }
 443
 444         this.mouseX = Roo.isTouch ? e.browserEvent.touches[0].pageX : e.getPageX();
 445         this.mouseY = Roo.isTouch ? e.browserEvent.touches[0].pageY : e.getPageY();
 446
 447     },
 448
 449     onMouseMove : function(e)
 450     {
 451         e.stopEvent();
 452
 453         if(!this.canvasLoaded){
 454             return;
 455         }
 456
 457         if (!this.dragable){
 458             return;
 459         }
 460
 461         var minX = Math.ceil(this.thumbEl.getLeft(true));
 462         var minY = Math.ceil(this.thumbEl.getTop(true));
 463
 464         var maxX = Math.ceil(minX + this.thumbEl.getWidth() - this.canvasEl.width);
 465         var maxY = Math.ceil(minY + this.thumbEl.getHeight() - this.canvasEl.height);
 466
 467         var x = Roo.isTouch ? e.browserEvent.touches[0].pageX : e.getPageX();
 468         var y = Roo.isTouch ? e.browserEvent.touches[0].pageY : e.getPageY();
 469
 470         x = x - this.mouseX;
 471         y = y - this.mouseY;
 472
 473         var bgX = Math.ceil(x + this.previewEl.getLeft(true));
 474         var bgY = Math.ceil(y + this.previewEl.getTop(true));
 475
 476         bgX = (minX < bgX) ? minX : ((maxX > bgX) ? maxX : bgX);
 477         bgY = (minY < bgY) ? minY : ((maxY > bgY) ? maxY : bgY);
 478
 479         this.previewEl.setLeft(bgX);
 480         this.previewEl.setTop(bgY);
 481
 482         this.mouseX = Roo.isTouch ? e.browserEvent.touches[0].pageX : e.getPageX();
 483         this.mouseY = Roo.isTouch ? e.browserEvent.touches[0].pageY : e.getPageY();
 484     },
 485
 486     onMouseUp : function(e)
 487     {
 488         e.stopEvent();
 489
 490         this.dragable = false;
 491     },
 492
 493     onMouseWheel : function(e)
 494     {
 495         e.stopEvent();
 496
 497         this.startScale = this.scale;
 498
 499         this.scale = (e.getWheelDelta() == 1) ? (this.scale + 1) : (this.scale - 1);
 500
 501         if(!this.zoomable()){
 502             this.scale = this.startScale;
 503             return;
 504         }
 505
 506         this.draw();
 507
 508         return;
 509     },
 510
 511     zoomable : function()
 512     {
 513         var minScale = this.thumbEl.getWidth() / this.minWidth;
 514
 515         if(this.minWidth < this.minHeight){
 516             minScale = this.thumbEl.getHeight() / this.minHeight;
 517         }
 518
 519         var width = Math.ceil(this.imageEl.OriginWidth * this.getScaleLevel() / minScale);
 520         var height = Math.ceil(this.imageEl.OriginHeight * this.getScaleLevel() / minScale);
 521
 522         if(
 523                 this.isDocument &&
 524                 (this.rotate == 0 || this.rotate == 180) &&
 525                 (
 526                     width > this.imageEl.OriginWidth ||
 527                     height > this.imageEl.OriginHeight ||
 528                     (width < this.minWidth && height < this.minHeight)
 529                 )
 530         ){
 531             return false;
 532         }
 533
 534         if(
 535                 this.isDocument &&
 536                 (this.rotate == 90 || this.rotate == 270) &&
 537                 (
 538                     width > this.imageEl.OriginWidth ||
 539                     height > this.imageEl.OriginHeight ||
 540                     (width < this.minHeight && height < this.minWidth)
 541                 )
 542         ){
 543             return false;
 544         }
 545
 546         if(
 547                 !this.isDocument &&
 548                 (this.rotate == 0 || this.rotate == 180) &&
 549                 (
 550                     width < this.minWidth ||
 551                     width > this.imageEl.OriginWidth ||
 552                     height < this.minHeight ||
 553                     height > this.imageEl.OriginHeight
 554                 )
 555         ){
 556             return false;
 557         }
 558
 559         if(
 560                 !this.isDocument &&
 561                 (this.rotate == 90 || this.rotate == 270) &&
 562                 (
 563                     width < this.minHeight ||
 564                     width > this.imageEl.OriginWidth ||
 565                     height < this.minWidth ||
 566                     height > this.imageEl.OriginHeight
 567                 )
 568         ){
 569             return false;
 570         }
 571
 572         return true;
 573
 574     },
 575
 576     onRotateLeft : function(e)
 577     {
 578         if(!this.isDocument && (this.canvasEl.height < this.thumbEl.getWidth() || this.canvasEl.width < this.thumbEl.getHeight())){
 579
 580             var minScale = this.thumbEl.getWidth() / this.minWidth;
 581
 582             var bw = Math.ceil(this.canvasEl.width / this.getScaleLevel());
 583             var bh = Math.ceil(this.canvasEl.height / this.getScaleLevel());
 584
 585             this.startScale = this.scale;
 586
 587             while (this.getScaleLevel() < minScale){
 588
 589                 this.scale = this.scale + 1;
 590
 591                 if(!this.zoomable()){
 592                     break;
 593                 }
 594
 595                 if(
 596                         Math.ceil(bw * this.getScaleLevel()) < this.thumbEl.getHeight() ||
 597                         Math.ceil(bh * this.getScaleLevel()) < this.thumbEl.getWidth()
 598                 ){
 599                     continue;
 600                 }
 601
 602                 this.rotate = (this.rotate < 90) ? 270 : this.rotate - 90;
 603
 604                 this.draw();
 605
 606                 return;
 607             }
 608
 609             this.scale = this.startScale;
 610
 611             this.onRotateFail();
 612
 613             return false;
 614         }
 615
 616         this.rotate = (this.rotate < 90) ? 270 : this.rotate - 90;
 617
 618         if(this.isDocument){
 619             this.setThumbBoxSize();
 620             this.setThumbBoxPosition();
 621             this.setCanvasPosition();
 622         }
 623
 624         this.draw();
 625
 626         this.fireEvent('rotate', this, 'left');
 627
 628     },
 629
 630     onRotateRight : function(e)
 631     {
 632         if(!this.isDocument && (this.canvasEl.height < this.thumbEl.getWidth() || this.canvasEl.width < this.thumbEl.getHeight())){
 633
 634             var minScale = this.thumbEl.getWidth() / this.minWidth;
 635
 636             var bw = Math.ceil(this.canvasEl.width / this.getScaleLevel());
 637             var bh = Math.ceil(this.canvasEl.height / this.getScaleLevel());
 638
 639             this.startScale = this.scale;
 640
 641             while (this.getScaleLevel() < minScale){
 642
 643                 this.scale = this.scale + 1;
 644
 645                 if(!this.zoomable()){
 646                     break;
 647                 }
 648
 649                 if(
 650                         Math.ceil(bw * this.getScaleLevel()) < this.thumbEl.getHeight() ||
 651                         Math.ceil(bh * this.getScaleLevel()) < this.thumbEl.getWidth()
 652                 ){
 653                     continue;
 654                 }
 655
 656                 this.rotate = (this.rotate > 180) ? 0 : this.rotate + 90;
 657
 658                 this.draw();
 659
 660                 return;
 661             }
 662
 663             this.scale = this.startScale;
 664
 665             this.onRotateFail();
 666
 667             return false;
 668         }
 669
 670         this.rotate = (this.rotate > 180) ? 0 : this.rotate + 90;
 671
 672         if(this.isDocument){
 673             this.setThumbBoxSize();
 674             this.setThumbBoxPosition();
 675             this.setCanvasPosition();
 676         }
 677
 678         this.draw();
 679
 680         this.fireEvent('rotate', this, 'right');
 681     },
 682
 683     onRotateFail : function()
 684     {
 685         this.errorEl.show(true);
 686
 687         var _this = this;
 688
 689         (function() { _this.errorEl.hide(true); }).defer(this.errorTimeout);
 690     },
 691
 692     draw : function()
 693     {
 694         this.previewEl.dom.innerHTML = '';
 695
 696         var canvasEl = document.createElement("canvas");
 697
 698         var contextEl = canvasEl.getContext("2d");
 699
 700         canvasEl.width = this.imageEl.OriginWidth * this.getScaleLevel();
 701         canvasEl.height = this.imageEl.OriginWidth * this.getScaleLevel();
 702         var center = this.imageEl.OriginWidth / 2;
 703
 704         if(this.imageEl.OriginWidth < this.imageEl.OriginHeight){
 705             canvasEl.width = this.imageEl.OriginHeight * this.getScaleLevel();
 706             canvasEl.height = this.imageEl.OriginHeight * this.getScaleLevel();
 707             center = this.imageEl.OriginHeight / 2;
 708         }
 709
 710         contextEl.scale(this.getScaleLevel(), this.getScaleLevel());
 711
 712         contextEl.translate(center, center);
 713         contextEl.rotate(this.rotate * Math.PI / 180);
 714
 715         contextEl.drawImage(this.imageEl, 0, 0, this.imageEl.OriginWidth, this.imageEl.OriginHeight, center * -1, center * -1, this.imageEl.OriginWidth, this.imageEl.OriginHeight);
 716
 717         this.canvasEl = document.createElement("canvas");
 718
 719         this.contextEl = this.canvasEl.getContext("2d");
 720
 721         switch (this.rotate) {
 722             case 0 :
 723
 724                 this.canvasEl.width = this.imageEl.OriginWidth * this.getScaleLevel();
 725                 this.canvasEl.height = this.imageEl.OriginHeight * this.getScaleLevel();
 726
 727                 this.contextEl.drawImage(canvasEl, 0, 0, this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 728
 729                 break;
 730             case 90 :
 731
 732                 this.canvasEl.width = this.imageEl.OriginHeight * this.getScaleLevel();
 733                 this.canvasEl.height = this.imageEl.OriginWidth * this.getScaleLevel();
 734
 735                 if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
 736                     this.contextEl.drawImage(canvasEl, Math.abs(this.canvasEl.width - this.canvasEl.height), 0, this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 737                     break;
 738                 }
 739
 740                 this.contextEl.drawImage(canvasEl, 0, 0, this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 741
 742                 break;
 743             case 180 :
 744
 745                 this.canvasEl.width = this.imageEl.OriginWidth * this.getScaleLevel();
 746                 this.canvasEl.height = this.imageEl.OriginHeight * this.getScaleLevel();
 747
 748                 if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
 749                     this.contextEl.drawImage(canvasEl, 0, Math.abs(this.canvasEl.width - this.canvasEl.height), this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 750                     break;
 751                 }
 752
 753                 this.contextEl.drawImage(canvasEl, Math.abs(this.canvasEl.width - this.canvasEl.height), 0, this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 754
 755                 break;
 756             case 270 :
 757
 758                 this.canvasEl.width = this.imageEl.OriginHeight * this.getScaleLevel();
 759                 this.canvasEl.height = this.imageEl.OriginWidth * this.getScaleLevel();
 760
 761                 if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
 762                     this.contextEl.drawImage(canvasEl, 0, 0, this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 763                     break;
 764                 }
 765
 766                 this.contextEl.drawImage(canvasEl, 0, Math.abs(this.canvasEl.width - this.canvasEl.height), this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 767
 768                 break;
 769             default :
 770                 break;
 771         }
 772
 773         this.previewEl.appendChild(this.canvasEl);
 774
 775         this.setCanvasPosition();
 776     },
 777
 778     crop : function()
 779     {
 780         if(!this.canvasLoaded){
 781             return;
 782         }
 783
 784         var imageCanvas = document.createElement("canvas");
 785
 786         var imageContext = imageCanvas.getContext("2d");
 787
 788         imageCanvas.width = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? this.imageEl.OriginWidth : this.imageEl.OriginHeight;
 789         imageCanvas.height = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? this.imageEl.OriginWidth : this.imageEl.OriginHeight;
 790
 791         var center = imageCanvas.width / 2;
 792
 793         imageContext.translate(center, center);
 794
 795         imageContext.rotate(this.rotate * Math.PI / 180);
 796
 797         imageContext.drawImage(this.imageEl, 0, 0, this.imageEl.OriginWidth, this.imageEl.OriginHeight, center * -1, center * -1, this.imageEl.OriginWidth, this.imageEl.OriginHeight);
 798
 799         var canvas = document.createElement("canvas");
 800
 801         var context = canvas.getContext("2d");
 802
 803         canvas.width = this.minWidth;
 804         canvas.height = this.minHeight;
 805
 806         switch (this.rotate) {
 807             case 0 :
 808
 809                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getWidth() / this.getScaleLevel());
 810                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getHeight() / this.getScaleLevel());
 811
 812                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 813                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 814
 815                 var targetWidth = this.minWidth - 2 * x;
 816                 var targetHeight = this.minHeight - 2 * y;
 817
 818                 var scale = 1;
 819
 820                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 821                     scale = targetWidth / width;
 822                 }
 823
 824                 if(x > 0 && y == 0){
 825                     scale = targetHeight / height;
 826                 }
 827
 828                 if(x > 0 && y > 0){
 829                     scale = targetWidth / width;
 830
 831                     if(width < height){
 832                         scale = targetHeight / height;
 833                     }
 834                 }
 835
 836                 context.scale(scale, scale);
 837
 838                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 839                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 840
 841                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 842                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 843
 844                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 845
 846                 break;
 847             case 90 :
 848
 849                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getWidth() / this.getScaleLevel());
 850                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getHeight() / this.getScaleLevel());
 851
 852                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 853                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 854
 855                 var targetWidth = this.minWidth - 2 * x;
 856                 var targetHeight = this.minHeight - 2 * y;
 857
 858                 var scale = 1;
 859
 860                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 861                     scale = targetWidth / width;
 862                 }
 863
 864                 if(x > 0 && y == 0){
 865                     scale = targetHeight / height;
 866                 }
 867
 868                 if(x > 0 && y > 0){
 869                     scale = targetWidth / width;
 870
 871                     if(width < height){
 872                         scale = targetHeight / height;
 873                     }
 874                 }
 875
 876                 context.scale(scale, scale);
 877
 878                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 879                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 880
 881                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 882                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 883
 884                 sx += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight) : 0;
 885
 886                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 887
 888                 break;
 889             case 180 :
 890
 891                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getWidth() / this.getScaleLevel());
 892                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getHeight() / this.getScaleLevel());
 893
 894                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 895                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 896
 897                 var targetWidth = this.minWidth - 2 * x;
 898                 var targetHeight = this.minHeight - 2 * y;
 899
 900                 var scale = 1;
 901
 902                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 903                     scale = targetWidth / width;
 904                 }
 905
 906                 if(x > 0 && y == 0){
 907                     scale = targetHeight / height;
 908                 }
 909
 910                 if(x > 0 && y > 0){
 911                     scale = targetWidth / width;
 912
 913                     if(width < height){
 914                         scale = targetHeight / height;
 915                     }
 916                 }
 917
 918                 context.scale(scale, scale);
 919
 920                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 921                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 922
 923                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 924                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 925
 926                 sx += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? 0 : Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight);
 927                 sy += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight) : 0;
 928
 929                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 930
 931                 break;
 932             case 270 :
 933
 934                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getWidth() / this.getScaleLevel());
 935                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getHeight() / this.getScaleLevel());
 936
 937                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 938                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 939
 940                 var targetWidth = this.minWidth - 2 * x;
 941                 var targetHeight = this.minHeight - 2 * y;
 942
 943                 var scale = 1;
 944
 945                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 946                     scale = targetWidth / width;
 947                 }
 948
 949                 if(x > 0 && y == 0){
 950                     scale = targetHeight / height;
 951                 }
 952
 953                 if(x > 0 && y > 0){
 954                     scale = targetWidth / width;
 955
 956                     if(width < height){
 957                         scale = targetHeight / height;
 958                     }
 959                 }
 960
 961                 context.scale(scale, scale);
 962
 963                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 964                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 965
 966                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 967                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 968
 969                 sy += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? 0 : Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight);
 970
 971                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 972
 973                 break;
 974             default :
 975                 break;
 976         }
 977
 978         this.cropData = canvas.toDataURL(this.cropType);
 979
 980         if(this.fireEvent('crop', this, this.cropData) !== false){
 981             this.process(this.file, this.cropData);
 982         }
 983
 984         return;
 985
 986     },
 987
 988     setThumbBoxSize : function()
 989     {
 990         var width, height;
 991
 992         if(this.isDocument && typeof(this.imageEl) != 'undefined'){
 993             width = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.max(this.minWidth, this.minHeight) : Math.min(this.minWidth, this.minHeight);
 994             height = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.min(this.minWidth, this.minHeight) : Math.max(this.minWidth, this.minHeight);
 995
 996             this.minWidth = width;
 997             this.minHeight = height;
 998
 999             if(this.rotate == 90 || this.rotate == 270){
1000                 this.minWidth = height;
1001                 this.minHeight = width;
1002             }
1003         }
1004
1005         height = 300;
1006         width = Math.ceil(this.minWidth * height / this.minHeight);
1007
1008         if(this.minWidth > this.minHeight){
1009             width = 300;
1010             height = Math.ceil(this.minHeight * width / this.minWidth);
1011         }
1012
1013         this.thumbEl.setStyle({
1014             width : width + 'px',
1015             height : height + 'px'
1016         });
1017
1018         return;
1019
1020     },
1021
1022     setThumbBoxPosition : function()
1023     {
1024         var x = Math.ceil((this.bodyEl.getWidth() - this.thumbEl.getWidth()) / 2 );
1025         var y = Math.ceil((this.bodyEl.getHeight() - this.thumbEl.getHeight()) / 2);
1026
1027         this.thumbEl.setLeft(x);
1028         this.thumbEl.setTop(y);
1029
1030     },
1031
1032     baseRotateLevel : function()
1033     {
1034         this.baseRotate = 1;
1035
1036         if(
1037                 typeof(this.exif) != 'undefined' &&
1038                 typeof(this.exif[Roo.bootstrap.UploadCropbox['tags']['Orientation']]) != 'undefined' &&
1039                 [1, 3, 6, 8].indexOf(this.exif[Roo.bootstrap.UploadCropbox['tags']['Orientation']]) != -1
1040         ){
1041             this.baseRotate = this.exif[Roo.bootstrap.UploadCropbox['tags']['Orientation']];
1042         }
1043
1044         this.rotate = Roo.bootstrap.UploadCropbox['Orientation'][this.baseRotate];
1045
1046     },
1047
1048     baseScaleLevel : function()
1049     {
1050         var width, height;
1051
1052         if(this.isDocument){
1053
1054             if(this.baseRotate == 6 || this.baseRotate == 8){
1055
1056                 height = this.thumbEl.getHeight();
1057                 this.baseScale = height / this.imageEl.OriginWidth;
1058
1059                 if(this.imageEl.OriginHeight * this.baseScale > this.thumbEl.getWidth()){
1060                     width = this.thumbEl.getWidth();
1061                     this.baseScale = width / this.imageEl.OriginHeight;
1062                 }
1063
1064                 return;
1065             }
1066
1067             height = this.thumbEl.getHeight();
1068             this.baseScale = height / this.imageEl.OriginHeight;
1069
1070             if(this.imageEl.OriginWidth * this.baseScale > this.thumbEl.getWidth()){
1071                 width = this.thumbEl.getWidth();
1072                 this.baseScale = width / this.imageEl.OriginWidth;
1073             }
1074
1075             return;
1076         }
1077
1078         if(this.baseRotate == 6 || this.baseRotate == 8){
1079
1080             width = this.thumbEl.getHeight();
1081             this.baseScale = width / this.imageEl.OriginHeight;
1082
1083             if(this.imageEl.OriginHeight * this.baseScale < this.thumbEl.getWidth()){
1084                 height = this.thumbEl.getWidth();
1085                 this.baseScale = height / this.imageEl.OriginHeight;
1086             }
1087
1088             if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
1089                 height = this.thumbEl.getWidth();
1090                 this.baseScale = height / this.imageEl.OriginHeight;
1091
1092                 if(this.imageEl.OriginWidth * this.baseScale < this.thumbEl.getHeight()){
1093                     width = this.thumbEl.getHeight();
1094                     this.baseScale = width / this.imageEl.OriginWidth;
1095                 }
1096             }
1097
1098             return;
1099         }
1100
1101         width = this.thumbEl.getWidth();
1102         this.baseScale = width / this.imageEl.OriginWidth;
1103
1104         if(this.imageEl.OriginHeight * this.baseScale < this.thumbEl.getHeight()){
1105             height = this.thumbEl.getHeight();
1106             this.baseScale = height / this.imageEl.OriginHeight;
1107         }
1108
1109         if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
1110
1111             height = this.thumbEl.getHeight();
1112             this.baseScale = height / this.imageEl.OriginHeight;
1113
1114             if(this.imageEl.OriginWidth * this.baseScale < this.thumbEl.getWidth()){
1115                 width = this.thumbEl.getWidth();
1116                 this.baseScale = width / this.imageEl.OriginWidth;
1117             }
1118
1119         }
1120
1121         return;
1122     },
1123
1124     getScaleLevel : function()
1125     {
1126         return this.baseScale * Math.pow(1.1, this.scale);
1127     },
1128
1129     onTouchStart : function(e)
1130     {
1131         if(!this.canvasLoaded){
1132             this.beforeSelectFile(e);
1133             return;
1134         }
1135
1136         var touches = e.browserEvent.touches;
1137
1138         if(!touches){
1139             return;
1140         }
1141
1142         if(touches.length == 1){
1143             this.onMouseDown(e);
1144             return;
1145         }
1146
1147         if(touches.length != 2){
1148             return;
1149         }
1150
1151         var coords = [];
1152
1153         for(var i = 0, finger; finger = touches[i]; i++){
1154             coords.push(finger.pageX, finger.pageY);
1155         }
1156
1157         var x = Math.pow(coords[0] - coords[2], 2);
1158         var y = Math.pow(coords[1] - coords[3], 2);
1159
1160         this.startDistance = Math.sqrt(x + y);
1161
1162         this.startScale = this.scale;
1163
1164         this.pinching = true;
1165         this.dragable = false;
1166
1167     },
1168
1169     onTouchMove : function(e)
1170     {
1171         if(!this.pinching && !this.dragable){
1172             return;
1173         }
1174
1175         var touches = e.browserEvent.touches;
1176
1177         if(!touches){
1178             return;
1179         }
1180
1181         if(this.dragable){
1182             this.onMouseMove(e);
1183             return;
1184         }
1185
1186         var coords = [];
1187
1188         for(var i = 0, finger; finger = touches[i]; i++){
1189             coords.push(finger.pageX, finger.pageY);
1190         }
1191
1192         var x = Math.pow(coords[0] - coords[2], 2);
1193         var y = Math.pow(coords[1] - coords[3], 2);
1194
1195         this.endDistance = Math.sqrt(x + y);
1196
1197         this.scale = this.startScale + Math.floor(Math.log(this.endDistance / this.startDistance) / Math.log(1.1));
1198
1199         if(!this.zoomable()){
1200             this.scale = this.startScale;
1201             return;
1202         }
1203
1204         this.draw();
1205
1206     },
1207
1208     onTouchEnd : function(e)
1209     {
1210         this.pinching = false;
1211         this.dragable = false;
1212
1213     },
1214
1215     process : function(file, crop)
1216     {
1217         this.xhr = new XMLHttpRequest();
1218
1219         file.xhr = this.xhr;
1220
1221         this.xhr.open(this.method, this.url, true);
1222
1223         var headers = {
1224             "Accept": "application/json",
1225             "Cache-Control": "no-cache",
1226             "X-Requested-With": "XMLHttpRequest"
1227         };
1228
1229         for (var headerName in headers) {
1230             var headerValue = headers[headerName];
1231             if (headerValue) {
1232                 this.xhr.setRequestHeader(headerName, headerValue);
1233             }
1234         }
1235
1236         var _this = this;
1237
1238         this.xhr.onload = function()
1239         {
1240             _this.xhrOnLoad(_this.xhr);
1241         }
1242
1243         this.xhr.onerror = function()
1244         {
1245             _this.xhrOnError(_this.xhr);
1246         }
1247
1248         var formData = new FormData();
1249
1250         formData.append('returnHTML', 'NO');
1251
1252         if(crop){
1253             formData.append('crop', crop);
1254         }
1255
1256         if(typeof(file) != 'undefined' && file.id * 1 < 1){
1257             formData.append(this.paramName, file, file.name);
1258         }
1259
1260         if(typeof(file.filename) != 'undefined'){
1261             formData.append('filename', file.filename);
1262         }
1263
1264         if(typeof(file.mimetype) != 'undefined'){
1265             formData.append('mimetype', file.mimetype);
1266         }
1267
1268         if(this.fireEvent('arrange', this, formData) != false){
1269             this.xhr.send(formData);
1270         };
1271     },
1272
1273     xhrOnLoad : function(xhr)
1274     {
1275         if (xhr.readyState !== 4) {
1276             this.fireEvent('exception', this, xhr);
1277             return;
1278         }
1279
1280         var response = Roo.decode(xhr.responseText);
1281
1282         if(!response.success){
1283             this.fireEvent('exception', this, xhr);
1284             return;
1285         }
1286
1287         var response = Roo.decode(xhr.responseText);
1288
1289         this.fireEvent('upload', this, response);
1290
1291     },
1292
1293     xhrOnError : function()
1294     {
1295         Roo.log('xhr on error');
1296
1297         var response = Roo.decode(xhr.responseText);
1298
1299         Roo.log(response);
1300
1301     },
1302
1303     prepare : function(file)
1304     {
1305         this.file = false;
1306         this.exif = {};
1307
1308         if(typeof(file) === 'string'){
1309             this.loadCanvas(file);
1310             return;
1311         }
1312
1313         if(!file || !this.urlAPI){
1314             return;
1315         }
1316
1317         this.file = file;
1318         this.cropType = file.type;
1319
1320         var _this = this;
1321
1322         if(this.fireEvent('prepare', this, this.file) != false){
1323
1324             var reader = new FileReader();
1325
1326             reader.onload = function (e) {
1327                 if (e.target.error) {
1328                     Roo.log(e.target.error);
1329                     return;
1330                 }
1331
1332                 var buffer = e.target.result,
1333                     dataView = new DataView(buffer),
1334                     offset = 2,
1335                     maxOffset = dataView.byteLength - 4,
1336                     markerBytes,
1337                     markerLength;
1338
1339                 if (dataView.getUint16(0) === 0xffd8) {
1340                     while (offset < maxOffset) {
1341                         markerBytes = dataView.getUint16(offset);
1342
1343                         if ((markerBytes >= 0xffe0 && markerBytes <= 0xffef) || markerBytes === 0xfffe) {
1344                             markerLength = dataView.getUint16(offset + 2) + 2;
1345                             if (offset + markerLength > dataView.byteLength) {
1346                                 Roo.log('Invalid meta data: Invalid segment size.');
1347                                 break;
1348                             }
1349
1350                             if(markerBytes == 0xffe1){
1351                                 _this.parseExifData(
1352                                     dataView,
1353                                     offset,
1354                                     markerLength
1355                                 );
1356                             }
1357
1358                             offset += markerLength;
1359
1360                             continue;
1361                         }
1362
1363                         break;
1364                     }
1365
1366                 }
1367
1368                 var url = _this.urlAPI.createObjectURL(_this.file);
1369
1370                 _this.loadCanvas(url);
1371
1372                 return;
1373             }
1374
1375             reader.readAsArrayBuffer(this.file);
1376
1377         }
1378
1379     },
1380
1381     parseExifData : function(dataView, offset, length)
1382     {
1383         var tiffOffset = offset + 10,
1384             littleEndian,
1385             dirOffset;
1386
1387         if (dataView.getUint32(offset + 4) !== 0x45786966) {
1388             // No Exif data, might be XMP data instead
1389             return;
1390         }
1391
1392         // Check for the ASCII code for "Exif" (0x45786966):
1393         if (dataView.getUint32(offset + 4) !== 0x45786966) {
1394             // No Exif data, might be XMP data instead
1395             return;
1396         }
1397         if (tiffOffset + 8 > dataView.byteLength) {
1398             Roo.log('Invalid Exif data: Invalid segment size.');
1399             return;
1400         }
1401         // Check for the two null bytes:
1402         if (dataView.getUint16(offset + 8) !== 0x0000) {
1403             Roo.log('Invalid Exif data: Missing byte alignment offset.');
1404             return;
1405         }
1406         // Check the byte alignment:
1407         switch (dataView.getUint16(tiffOffset)) {
1408         case 0x4949:
1409             littleEndian = true;
1410             break;
1411         case 0x4D4D:
1412             littleEndian = false;
1413             break;
1414         default:
1415             Roo.log('Invalid Exif data: Invalid byte alignment marker.');
1416             return;
1417         }
1418         // Check for the TIFF tag marker (0x002A):
1419         if (dataView.getUint16(tiffOffset + 2, littleEndian) !== 0x002A) {
1420             Roo.log('Invalid Exif data: Missing TIFF marker.');
1421             return;
1422         }
1423         // Retrieve the directory offset bytes, usually 0x00000008 or 8 decimal:
1424         dirOffset = dataView.getUint32(tiffOffset + 4, littleEndian);
1425
1426         this.parseExifTags(
1427             dataView,
1428             tiffOffset,
1429             tiffOffset + dirOffset,
1430             littleEndian
1431         );
1432     },
1433
1434     parseExifTags : function(dataView, tiffOffset, dirOffset, littleEndian)
1435     {
1436         var tagsNumber,
1437             dirEndOffset,
1438             i;
1439         if (dirOffset + 6 > dataView.byteLength) {
1440             Roo.log('Invalid Exif data: Invalid directory offset.');
1441             return;
1442         }
1443         tagsNumber = dataView.getUint16(dirOffset, littleEndian);
1444         dirEndOffset = dirOffset + 2 + 12 * tagsNumber;
1445         if (dirEndOffset + 4 > dataView.byteLength) {
1446             Roo.log('Invalid Exif data: Invalid directory size.');
1447             return;
1448         }
1449         for (i = 0; i < tagsNumber; i += 1) {
1450             this.parseExifTag(
1451                 dataView,
1452                 tiffOffset,
1453                 dirOffset + 2 + 12 * i, // tag offset
1454                 littleEndian
1455             );
1456         }
1457         // Return the offset to the next directory:
1458         return dataView.getUint32(dirEndOffset, littleEndian);
1459     },
1460
1461     parseExifTag : function (dataView, tiffOffset, offset, littleEndian)
1462     {
1463         var tag = dataView.getUint16(offset, littleEndian);
1464
1465         this.exif[tag] = this.getExifValue(
1466             dataView,
1467             tiffOffset,
1468             offset,
1469             dataView.getUint16(offset + 2, littleEndian), // tag type
1470             dataView.getUint32(offset + 4, littleEndian), // tag length
1471             littleEndian
1472         );
1473     },
1474
1475     getExifValue : function (dataView, tiffOffset, offset, type, length, littleEndian)
1476     {
1477         var tagType = Roo.bootstrap.UploadCropbox.exifTagTypes[type],
1478             tagSize,
1479             dataOffset,
1480             values,
1481             i,
1482             str,
1483             c;
1484
1485         if (!tagType) {
1486             Roo.log('Invalid Exif data: Invalid tag type.');
1487             return;
1488         }
1489
1490         tagSize = tagType.size * length;
1491         // Determine if the value is contained in the dataOffset bytes,
1492         // or if the value at the dataOffset is a pointer to the actual data:
1493         dataOffset = tagSize > 4 ?
1494                 tiffOffset + dataView.getUint32(offset + 8, littleEndian) : (offset + 8);
1495         if (dataOffset + tagSize > dataView.byteLength) {
1496             Roo.log('Invalid Exif data: Invalid data offset.');
1497             return;
1498         }
1499         if (length === 1) {
1500             return tagType.getValue(dataView, dataOffset, littleEndian);
1501         }
1502         values = [];
1503         for (i = 0; i < length; i += 1) {
1504             values[i] = tagType.getValue(dataView, dataOffset + i * tagType.size, littleEndian);
1505         }
1506
1507         if (tagType.ascii) {
1508             str = '';
1509             // Concatenate the chars:
1510             for (i = 0; i < values.length; i += 1) {
1511                 c = values[i];
1512                 // Ignore the terminating NULL byte(s):
1513                 if (c === '\u0000') {
1514                     break;
1515                 }
1516                 str += c;
1517             }
1518             return str;
1519         }
1520         return values;
1521     }
1522
1523 });
1524
1525 Roo.apply(Roo.bootstrap.UploadCropbox, {
1526     tags : {
1527         'Orientation': 0x0112
1528     },
1529
1530     Orientation: {
1531             1: 0, //'top-left',
1532 //            2: 'top-right',
1533             3: 180, //'bottom-right',
1534 //            4: 'bottom-left',
1535 //            5: 'left-top',
1536             6: 90, //'right-top',
1537 //            7: 'right-bottom',
1538             8: 270 //'left-bottom'
1539     },
1540
1541     exifTagTypes : {
1542         // byte, 8-bit unsigned int:
1543         1: {
1544             getValue: function (dataView, dataOffset) {
1545                 return dataView.getUint8(dataOffset);
1546             },
1547             size: 1
1548         },
1549         // ascii, 8-bit byte:
1550         2: {
1551             getValue: function (dataView, dataOffset) {
1552                 return String.fromCharCode(dataView.getUint8(dataOffset));
1553             },
1554             size: 1,
1555             ascii: true
1556         },
1557         // short, 16 bit int:
1558         3: {
1559             getValue: function (dataView, dataOffset, littleEndian) {
1560                 return dataView.getUint16(dataOffset, littleEndian);
1561             },
1562             size: 2
1563         },
1564         // long, 32 bit int:
1565         4: {
1566             getValue: function (dataView, dataOffset, littleEndian) {
1567                 return dataView.getUint32(dataOffset, littleEndian);
1568             },
1569             size: 4
1570         },
1571         // rational = two long values, first is numerator, second is denominator:
1572         5: {
1573             getValue: function (dataView, dataOffset, littleEndian) {
1574                 return dataView.getUint32(dataOffset, littleEndian) /
1575                     dataView.getUint32(dataOffset + 4, littleEndian);
1576             },
1577             size: 8
1578         },
1579         // slong, 32 bit signed int:
1580         9: {
1581             getValue: function (dataView, dataOffset, littleEndian) {
1582                 return dataView.getInt32(dataOffset, littleEndian);
1583             },
1584             size: 4
1585         },
1586         // srational, two slongs, first is numerator, second is denominator:
1587         10: {
1588             getValue: function (dataView, dataOffset, littleEndian) {
1589                 return dataView.getInt32(dataOffset, littleEndian) /
1590                     dataView.getInt32(dataOffset + 4, littleEndian);
1591             },
1592             size: 8
1593         }
1594     },
1595
1596     footer : {
1597         STANDARD : [
1598             {
1599                 tag : 'div',
1600                 cls : 'btn-group roo-upload-cropbox-rotate-left',
1601                 action : 'rotate-left',
1602                 cn : [
1603                     {
1604                         tag : 'button',
1605                         cls : 'btn btn-default',
1606                         html : '<i class="fa fa-undo"></i>'
1607                     }
1608                 ]
1609             },
1610             {
1611                 tag : 'div',
1612                 cls : 'btn-group roo-upload-cropbox-picture',
1613                 action : 'picture',
1614                 cn : [
1615                     {
1616                         tag : 'button',
1617                         cls : 'btn btn-default',
1618                         html : '<i class="fa fa-picture-o"></i>'
1619                     }
1620                 ]
1621             },
1622             {
1623                 tag : 'div',
1624                 cls : 'btn-group roo-upload-cropbox-rotate-right',
1625                 action : 'rotate-right',
1626                 cn : [
1627                     {
1628                         tag : 'button',
1629                         cls : 'btn btn-default',
1630                         html : '<i class="fa fa-repeat"></i>'
1631                     }
1632                 ]
1633             }
1634         ],
1635         DOCUMENT : [
1636             {
1637                 tag : 'div',
1638                 cls : 'btn-group roo-upload-cropbox-rotate-left',
1639                 action : 'rotate-left',
1640                 cn : [
1641                     {
1642                         tag : 'button',
1643                         cls : 'btn btn-default',
1644                         html : '<i class="fa fa-undo"></i>'
1645                     }
1646                 ]
1647             },
1648             {
1649                 tag : 'div',
1650                 cls : 'btn-group roo-upload-cropbox-download',
1651                 action : 'download',
1652                 cn : [
1653                     {
1654                         tag : 'button',
1655                         cls : 'btn btn-default',
1656                         html : '<i class="fa fa-download"></i>'
1657                     }
1658                 ]
1659             },
1660             {
1661                 tag : 'div',
1662                 cls : 'btn-group roo-upload-cropbox-crop',
1663                 action : 'crop',
1664                 cn : [
1665                     {
1666                         tag : 'button',
1667                         cls : 'btn btn-default',
1668                         html : '<i class="fa fa-crop"></i>'
1669                     }
1670                 ]
1671             },
1672             {
1673                 tag : 'div',
1674                 cls : 'btn-group roo-upload-cropbox-trash',
1675                 action : 'trash',
1676                 cn : [
1677                     {
1678                         tag : 'button',
1679                         cls : 'btn btn-default',
1680                         html : '<i class="fa fa-trash"></i>'
1681                     }
1682                 ]
1683             },
1684             {
1685                 tag : 'div',
1686                 cls : 'btn-group roo-upload-cropbox-rotate-right',
1687                 action : 'rotate-right',
1688                 cn : [
1689                     {
1690                         tag : 'button',
1691                         cls : 'btn btn-default',
1692                         html : '<i class="fa fa-repeat"></i>'
1693                     }
1694                 ]
1695             }
1696         ],
1697         ROTATOR : [
1698             {
1699                 tag : 'div',
1700                 cls : 'btn-group roo-upload-cropbox-rotate-left',
1701                 action : 'rotate-left',
1702                 cn : [
1703                     {
1704                         tag : 'button',
1705                         cls : 'btn btn-default',
1706                         html : '<i class="fa fa-undo"></i>'
1707                     }
1708                 ]
1709             },
1710             {
1711                 tag : 'div',
1712                 cls : 'btn-group roo-upload-cropbox-rotate-right',
1713                 action : 'rotate-right',
1714                 cn : [
1715                     {
1716                         tag : 'button',
1717                         cls : 'btn btn-default',
1718                         html : '<i class="fa fa-repeat"></i>'
1719                     }
1720                 ]
1721             }
1722         ]
1723     }
1724 });