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  * @cfg {Boolean} loadMask (true|false) default true
  21  * @cfg {Boolean} loadingText default 'Loading...'
  22  *
  23  * @constructor
  24  * Create a new UploadCropbox
  25  * @param {Object} config The config object
  26  */
  27
  28 Roo.bootstrap.UploadCropbox = function(config){
  29     Roo.bootstrap.UploadCropbox.superclass.constructor.call(this, config);
  30
  31     this.addEvents({
  32         /**
  33          * @event beforeselectfile
  34          * Fire before select file
  35          * @param {Roo.bootstrap.UploadCropbox} this
  36          */
  37         "beforeselectfile" : true,
  38         /**
  39          * @event initial
  40          * Fire after initEvent
  41          * @param {Roo.bootstrap.UploadCropbox} this
  42          */
  43         "initial" : true,
  44         /**
  45          * @event crop
  46          * Fire after initEvent
  47          * @param {Roo.bootstrap.UploadCropbox} this
  48          * @param {String} data
  49          */
  50         "crop" : true,
  51         /**
  52          * @event prepare
  53          * Fire when preparing the file data
  54          * @param {Roo.bootstrap.UploadCropbox} this
  55          * @param {Object} file
  56          */
  57         "prepare" : true,
  58         /**
  59          * @event exception
  60          * Fire when get exception
  61          * @param {Roo.bootstrap.UploadCropbox} this
  62          * @param {XMLHttpRequest} xhr
  63          */
  64         "exception" : true,
  65         /**
  66          * @event beforeloadcanvas
  67          * Fire before load the canvas
  68          * @param {Roo.bootstrap.UploadCropbox} this
  69          * @param {String} src
  70          */
  71         "beforeloadcanvas" : true,
  72         /**
  73          * @event trash
  74          * Fire when trash image
  75          * @param {Roo.bootstrap.UploadCropbox} this
  76          */
  77         "trash" : true,
  78         /**
  79          * @event download
  80          * Fire when download the image
  81          * @param {Roo.bootstrap.UploadCropbox} this
  82          */
  83         "download" : true,
  84         /**
  85          * @event footerbuttonclick
  86          * Fire when footerbuttonclick
  87          * @param {Roo.bootstrap.UploadCropbox} this
  88          * @param {String} type
  89          */
  90         "footerbuttonclick" : true,
  91         /**
  92          * @event resize
  93          * Fire when resize
  94          * @param {Roo.bootstrap.UploadCropbox} this
  95          */
  96         "resize" : true,
  97         /**
  98          * @event rotate
  99          * Fire when rotate the image
 100          * @param {Roo.bootstrap.UploadCropbox} this
 101          * @param {String} pos
 102          */
 103         "rotate" : true,
 104         /**
 105          * @event inspect
 106          * Fire when inspect the file
 107          * @param {Roo.bootstrap.UploadCropbox} this
 108          * @param {Object} file
 109          */
 110         "inspect" : true,
 111         /**
 112          * @event upload
 113          * Fire when xhr upload the file
 114          * @param {Roo.bootstrap.UploadCropbox} this
 115          * @param {Object} data
 116          */
 117         "upload" : true,
 118         /**
 119          * @event arrange
 120          * Fire when arrange the file data
 121          * @param {Roo.bootstrap.UploadCropbox} this
 122          * @param {Object} formData
 123          */
 124         "arrange" : true
 125     });
 126
 127     this.buttons = this.buttons || Roo.bootstrap.UploadCropbox.footer.STANDARD;
 128 };
 129
 130 Roo.extend(Roo.bootstrap.UploadCropbox, Roo.bootstrap.Component,  {
 131
 132     emptyText : 'Click to upload image',
 133     rotateNotify : 'Image is too small to rotate',
 134     errorTimeout : 3000,
 135     scale : 0,
 136     baseScale : 1,
 137     rotate : 0,
 138     dragable : false,
 139     pinching : false,
 140     mouseX : 0,
 141     mouseY : 0,
 142     cropData : false,
 143     minWidth : 300,
 144     minHeight : 300,
 145     file : false,
 146     exif : {},
 147     baseRotate : 1,
 148     cropType : 'image/jpeg',
 149     buttons : false,
 150     canvasLoaded : false,
 151     isDocument : false,
 152     method : 'POST',
 153     paramName : 'imageUpload',
 154     loadMask : true,
 155     loadingText : 'Loading...',
 156     maskEl : false,
 157
 158     getAutoCreate : function()
 159     {
 160         var cfg = {
 161             tag : 'div',
 162             cls : 'roo-upload-cropbox',
 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-body',
 172                     style : 'cursor:pointer',
 173                     cn : [
 174                         {
 175                             tag : 'div',
 176                             cls : 'roo-upload-cropbox-preview'
 177                         },
 178                         {
 179                             tag : 'div',
 180                             cls : 'roo-upload-cropbox-thumb'
 181                         },
 182                         {
 183                             tag : 'div',
 184                             cls : 'roo-upload-cropbox-empty-notify',
 185                             html : this.emptyText
 186                         },
 187                         {
 188                             tag : 'div',
 189                             cls : 'roo-upload-cropbox-error-notify alert alert-danger',
 190                             html : this.rotateNotify
 191                         }
 192                     ]
 193                 },
 194                 {
 195                     tag : 'div',
 196                     cls : 'roo-upload-cropbox-footer',
 197                     cn : {
 198                         tag : 'div',
 199                         cls : 'btn-group btn-group-justified roo-upload-cropbox-btn-group',
 200                         cn : []
 201                     }
 202                 }
 203             ]
 204         };
 205
 206         return cfg;
 207     },
 208
 209     onRender : function(ct, position)
 210     {
 211         Roo.bootstrap.UploadCropbox.superclass.onRender.call(this, ct, position);
 212
 213         if (this.buttons.length) {
 214
 215             Roo.each(this.buttons, function(bb) {
 216
 217                 var btn = this.el.select('.roo-upload-cropbox-footer div.roo-upload-cropbox-btn-group').first().createChild(bb);
 218
 219                 btn.on('click', this.onFooterButtonClick.createDelegate(this, [bb.action], true));
 220
 221             }, this);
 222         }
 223
 224         if(this.loadMask){
 225             this.maskEl = this.el;
 226         }
 227     },
 228
 229     initEvents : function()
 230     {
 231         this.urlAPI = (window.createObjectURL && window) ||
 232                                 (window.URL && URL.revokeObjectURL && URL) ||
 233                                 (window.webkitURL && webkitURL);
 234
 235         this.bodyEl = this.el.select('.roo-upload-cropbox-body', true).first();
 236         this.bodyEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 237
 238         this.selectorEl = this.el.select('.roo-upload-cropbox-selector', true).first();
 239         this.selectorEl.hide();
 240
 241         this.previewEl = this.el.select('.roo-upload-cropbox-preview', true).first();
 242         this.previewEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 243
 244         this.thumbEl = this.el.select('.roo-upload-cropbox-thumb', true).first();
 245         this.thumbEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 246         this.thumbEl.hide();
 247
 248         this.notifyEl = this.el.select('.roo-upload-cropbox-empty-notify', true).first();
 249         this.notifyEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 250
 251         this.errorEl = this.el.select('.roo-upload-cropbox-error-notify', true).first();
 252         this.errorEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 253         this.errorEl.hide();
 254
 255         this.footerEl = this.el.select('.roo-upload-cropbox-footer', true).first();
 256         this.footerEl.setVisibilityMode(Roo.Element.DISPLAY).originalDisplay = 'block';
 257         this.footerEl.hide();
 258
 259         this.setThumbBoxSize();
 260
 261         this.bind();
 262
 263         this.resize();
 264
 265         this.fireEvent('initial', this);
 266     },
 267
 268     bind : function()
 269     {
 270         var _this = this;
 271
 272         window.addEventListener("resize", function() { _this.resize(); } );
 273
 274         this.bodyEl.on('click', this.beforeSelectFile, this);
 275
 276         if(Roo.isTouch){
 277             this.bodyEl.on('touchstart', this.onTouchStart, this);
 278             this.bodyEl.on('touchmove', this.onTouchMove, this);
 279             this.bodyEl.on('touchend', this.onTouchEnd, this);
 280         }
 281
 282         if(!Roo.isTouch){
 283             this.bodyEl.on('mousedown', this.onMouseDown, this);
 284             this.bodyEl.on('mousemove', this.onMouseMove, this);
 285             var mousewheel = (/Firefox/i.test(navigator.userAgent))? 'DOMMouseScroll' : 'mousewheel';
 286             this.bodyEl.on(mousewheel, this.onMouseWheel, this);
 287             Roo.get(document).on('mouseup', this.onMouseUp, this);
 288         }
 289
 290         this.selectorEl.on('change', this.onFileSelected, this);
 291     },
 292
 293     reset : function()
 294     {
 295         this.scale = 0;
 296         this.baseScale = 1;
 297         this.rotate = 0;
 298         this.baseRotate = 1;
 299         this.dragable = false;
 300         this.pinching = false;
 301         this.mouseX = 0;
 302         this.mouseY = 0;
 303         this.cropData = false;
 304         this.notifyEl.dom.innerHTML = this.emptyText;
 305
 306         this.selectorEl.dom.value = '';
 307
 308     },
 309
 310     resize : function()
 311     {
 312         if(this.fireEvent('resize', this) != false){
 313             this.setThumbBoxPosition();
 314             this.setCanvasPosition();
 315         }
 316     },
 317
 318     onFooterButtonClick : function(e, el, o, type)
 319     {
 320         switch (type) {
 321             case 'rotate-left' :
 322                 this.onRotateLeft(e);
 323                 break;
 324             case 'rotate-right' :
 325                 this.onRotateRight(e);
 326                 break;
 327             case 'picture' :
 328                 this.beforeSelectFile(e);
 329                 break;
 330             case 'trash' :
 331                 this.trash(e);
 332                 break;
 333             case 'crop' :
 334                 this.crop(e);
 335                 break;
 336             case 'download' :
 337                 this.download(e);
 338                 break;
 339             default :
 340                 break;
 341         }
 342
 343         this.fireEvent('footerbuttonclick', this, type);
 344     },
 345
 346     beforeSelectFile : function(e)
 347     {
 348         e.preventDefault();
 349
 350         if(this.fireEvent('beforeselectfile', this) != false){
 351             this.selectorEl.dom.click();
 352         }
 353     },
 354
 355     onFileSelected : function(e)
 356     {
 357         e.preventDefault();
 358
 359         if(this.loadMask){
 360             this.maskEl.mask(this.loadingText);
 361         }
 362
 363         if(typeof(this.selectorEl.dom.files) == 'undefined' || !this.selectorEl.dom.files.length){
 364             return;
 365         }
 366
 367         var file = this.selectorEl.dom.files[0];
 368
 369         if(this.fireEvent('inspect', this, file) != false){
 370             this.prepare(file);
 371         }
 372
 373     },
 374
 375     trash : function(e)
 376     {
 377         this.fireEvent('trash', this);
 378     },
 379
 380     download : function(e)
 381     {
 382         this.fireEvent('download', this);
 383     },
 384
 385     loadCanvas : function(src)
 386     {
 387         if(this.fireEvent('beforeloadcanvas', this, src) != false){
 388
 389             this.reset();
 390
 391             this.imageEl = document.createElement('img');
 392
 393             var _this = this;
 394
 395             this.imageEl.addEventListener("load", function(){ _this.onLoadCanvas(); });
 396
 397             this.imageEl.src = src;
 398         }
 399     },
 400
 401     onLoadCanvas : function()
 402     {
 403         this.imageEl.OriginWidth = this.imageEl.naturalWidth || this.imageEl.width;
 404         this.imageEl.OriginHeight = this.imageEl.naturalHeight || this.imageEl.height;
 405
 406         this.bodyEl.un('click', this.beforeSelectFile, this);
 407
 408         this.notifyEl.hide();
 409         this.thumbEl.show();
 410         this.footerEl.show();
 411
 412         this.baseRotateLevel();
 413
 414         if(this.isDocument){
 415             this.setThumbBoxSize();
 416         }
 417
 418         this.setThumbBoxPosition();
 419
 420         this.baseScaleLevel();
 421
 422         this.draw();
 423
 424         this.resize();
 425
 426         this.canvasLoaded = true;
 427
 428         if(this.loadMask){
 429             this.maskEl.unmask();
 430         }
 431
 432     },
 433
 434     setCanvasPosition : function()
 435     {
 436         if(!this.canvasEl){
 437             return;
 438         }
 439
 440         var pw = Math.ceil((this.bodyEl.getWidth() - this.canvasEl.width) / 2);
 441         var ph = Math.ceil((this.bodyEl.getHeight() - this.canvasEl.height) / 2);
 442
 443         this.previewEl.setLeft(pw);
 444         this.previewEl.setTop(ph);
 445
 446     },
 447
 448     onMouseDown : function(e)
 449     {
 450         e.stopEvent();
 451
 452         this.dragable = true;
 453         this.pinching = false;
 454
 455         if(this.isDocument && (this.canvasEl.width < this.thumbEl.getWidth() || this.canvasEl.height < this.thumbEl.getHeight())){
 456             this.dragable = false;
 457             return;
 458         }
 459
 460         this.mouseX = Roo.isTouch ? e.browserEvent.touches[0].pageX : e.getPageX();
 461         this.mouseY = Roo.isTouch ? e.browserEvent.touches[0].pageY : e.getPageY();
 462
 463     },
 464
 465     onMouseMove : function(e)
 466     {
 467         e.stopEvent();
 468
 469         if(!this.canvasLoaded){
 470             return;
 471         }
 472
 473         if (!this.dragable){
 474             return;
 475         }
 476
 477         var minX = Math.ceil(this.thumbEl.getLeft(true));
 478         var minY = Math.ceil(this.thumbEl.getTop(true));
 479
 480         var maxX = Math.ceil(minX + this.thumbEl.getWidth() - this.canvasEl.width);
 481         var maxY = Math.ceil(minY + this.thumbEl.getHeight() - this.canvasEl.height);
 482
 483         var x = Roo.isTouch ? e.browserEvent.touches[0].pageX : e.getPageX();
 484         var y = Roo.isTouch ? e.browserEvent.touches[0].pageY : e.getPageY();
 485
 486         x = x - this.mouseX;
 487         y = y - this.mouseY;
 488
 489         var bgX = Math.ceil(x + this.previewEl.getLeft(true));
 490         var bgY = Math.ceil(y + this.previewEl.getTop(true));
 491
 492         bgX = (minX < bgX) ? minX : ((maxX > bgX) ? maxX : bgX);
 493         bgY = (minY < bgY) ? minY : ((maxY > bgY) ? maxY : bgY);
 494
 495         this.previewEl.setLeft(bgX);
 496         this.previewEl.setTop(bgY);
 497
 498         this.mouseX = Roo.isTouch ? e.browserEvent.touches[0].pageX : e.getPageX();
 499         this.mouseY = Roo.isTouch ? e.browserEvent.touches[0].pageY : e.getPageY();
 500     },
 501
 502     onMouseUp : function(e)
 503     {
 504         e.stopEvent();
 505
 506         this.dragable = false;
 507     },
 508
 509     onMouseWheel : function(e)
 510     {
 511         e.stopEvent();
 512
 513         this.startScale = this.scale;
 514
 515         this.scale = (e.getWheelDelta() == 1) ? (this.scale + 1) : (this.scale - 1);
 516
 517         if(!this.zoomable()){
 518             this.scale = this.startScale;
 519             return;
 520         }
 521
 522         this.draw();
 523
 524         return;
 525     },
 526
 527     zoomable : function()
 528     {
 529         var minScale = this.thumbEl.getWidth() / this.minWidth;
 530
 531         if(this.minWidth < this.minHeight){
 532             minScale = this.thumbEl.getHeight() / this.minHeight;
 533         }
 534
 535         var width = Math.ceil(this.imageEl.OriginWidth * this.getScaleLevel() / minScale);
 536         var height = Math.ceil(this.imageEl.OriginHeight * this.getScaleLevel() / minScale);
 537
 538         if(
 539                 this.isDocument &&
 540                 (this.rotate == 0 || this.rotate == 180) &&
 541                 (
 542                     width > this.imageEl.OriginWidth ||
 543                     height > this.imageEl.OriginHeight ||
 544                     (width < this.minWidth && height < this.minHeight)
 545                 )
 546         ){
 547             return false;
 548         }
 549
 550         if(
 551                 this.isDocument &&
 552                 (this.rotate == 90 || this.rotate == 270) &&
 553                 (
 554                     width > this.imageEl.OriginWidth ||
 555                     height > this.imageEl.OriginHeight ||
 556                     (width < this.minHeight && height < this.minWidth)
 557                 )
 558         ){
 559             return false;
 560         }
 561
 562         if(
 563                 !this.isDocument &&
 564                 (this.rotate == 0 || this.rotate == 180) &&
 565                 (
 566                     width < this.minWidth ||
 567                     width > this.imageEl.OriginWidth ||
 568                     height < this.minHeight ||
 569                     height > this.imageEl.OriginHeight
 570                 )
 571         ){
 572             return false;
 573         }
 574
 575         if(
 576                 !this.isDocument &&
 577                 (this.rotate == 90 || this.rotate == 270) &&
 578                 (
 579                     width < this.minHeight ||
 580                     width > this.imageEl.OriginWidth ||
 581                     height < this.minWidth ||
 582                     height > this.imageEl.OriginHeight
 583                 )
 584         ){
 585             return false;
 586         }
 587
 588         return true;
 589
 590     },
 591
 592     onRotateLeft : function(e)
 593     {
 594         if(!this.isDocument && (this.canvasEl.height < this.thumbEl.getWidth() || this.canvasEl.width < this.thumbEl.getHeight())){
 595
 596             var minScale = this.thumbEl.getWidth() / this.minWidth;
 597
 598             var bw = Math.ceil(this.canvasEl.width / this.getScaleLevel());
 599             var bh = Math.ceil(this.canvasEl.height / this.getScaleLevel());
 600
 601             this.startScale = this.scale;
 602
 603             while (this.getScaleLevel() < minScale){
 604
 605                 this.scale = this.scale + 1;
 606
 607                 if(!this.zoomable()){
 608                     break;
 609                 }
 610
 611                 if(
 612                         Math.ceil(bw * this.getScaleLevel()) < this.thumbEl.getHeight() ||
 613                         Math.ceil(bh * this.getScaleLevel()) < this.thumbEl.getWidth()
 614                 ){
 615                     continue;
 616                 }
 617
 618                 this.rotate = (this.rotate < 90) ? 270 : this.rotate - 90;
 619
 620                 this.draw();
 621
 622                 return;
 623             }
 624
 625             this.scale = this.startScale;
 626
 627             this.onRotateFail();
 628
 629             return false;
 630         }
 631
 632         this.rotate = (this.rotate < 90) ? 270 : this.rotate - 90;
 633
 634         if(this.isDocument){
 635             this.setThumbBoxSize();
 636             this.setThumbBoxPosition();
 637             this.setCanvasPosition();
 638         }
 639
 640         this.draw();
 641
 642         this.fireEvent('rotate', this, 'left');
 643
 644     },
 645
 646     onRotateRight : function(e)
 647     {
 648         if(!this.isDocument && (this.canvasEl.height < this.thumbEl.getWidth() || this.canvasEl.width < this.thumbEl.getHeight())){
 649
 650             var minScale = this.thumbEl.getWidth() / this.minWidth;
 651
 652             var bw = Math.ceil(this.canvasEl.width / this.getScaleLevel());
 653             var bh = Math.ceil(this.canvasEl.height / this.getScaleLevel());
 654
 655             this.startScale = this.scale;
 656
 657             while (this.getScaleLevel() < minScale){
 658
 659                 this.scale = this.scale + 1;
 660
 661                 if(!this.zoomable()){
 662                     break;
 663                 }
 664
 665                 if(
 666                         Math.ceil(bw * this.getScaleLevel()) < this.thumbEl.getHeight() ||
 667                         Math.ceil(bh * this.getScaleLevel()) < this.thumbEl.getWidth()
 668                 ){
 669                     continue;
 670                 }
 671
 672                 this.rotate = (this.rotate > 180) ? 0 : this.rotate + 90;
 673
 674                 this.draw();
 675
 676                 return;
 677             }
 678
 679             this.scale = this.startScale;
 680
 681             this.onRotateFail();
 682
 683             return false;
 684         }
 685
 686         this.rotate = (this.rotate > 180) ? 0 : this.rotate + 90;
 687
 688         if(this.isDocument){
 689             this.setThumbBoxSize();
 690             this.setThumbBoxPosition();
 691             this.setCanvasPosition();
 692         }
 693
 694         this.draw();
 695
 696         this.fireEvent('rotate', this, 'right');
 697     },
 698
 699     onRotateFail : function()
 700     {
 701         this.errorEl.show(true);
 702
 703         var _this = this;
 704
 705         (function() { _this.errorEl.hide(true); }).defer(this.errorTimeout);
 706     },
 707
 708     draw : function()
 709     {
 710         this.previewEl.dom.innerHTML = '';
 711
 712         var canvasEl = document.createElement("canvas");
 713
 714         var contextEl = canvasEl.getContext("2d");
 715
 716         canvasEl.width = this.imageEl.OriginWidth * this.getScaleLevel();
 717         canvasEl.height = this.imageEl.OriginWidth * this.getScaleLevel();
 718         var center = this.imageEl.OriginWidth / 2;
 719
 720         if(this.imageEl.OriginWidth < this.imageEl.OriginHeight){
 721             canvasEl.width = this.imageEl.OriginHeight * this.getScaleLevel();
 722             canvasEl.height = this.imageEl.OriginHeight * this.getScaleLevel();
 723             center = this.imageEl.OriginHeight / 2;
 724         }
 725
 726         contextEl.scale(this.getScaleLevel(), this.getScaleLevel());
 727
 728         contextEl.translate(center, center);
 729         contextEl.rotate(this.rotate * Math.PI / 180);
 730
 731         contextEl.drawImage(this.imageEl, 0, 0, this.imageEl.OriginWidth, this.imageEl.OriginHeight, center * -1, center * -1, this.imageEl.OriginWidth, this.imageEl.OriginHeight);
 732
 733         this.canvasEl = document.createElement("canvas");
 734
 735         this.contextEl = this.canvasEl.getContext("2d");
 736
 737         switch (this.rotate) {
 738             case 0 :
 739
 740                 this.canvasEl.width = this.imageEl.OriginWidth * this.getScaleLevel();
 741                 this.canvasEl.height = this.imageEl.OriginHeight * this.getScaleLevel();
 742
 743                 this.contextEl.drawImage(canvasEl, 0, 0, this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 744
 745                 break;
 746             case 90 :
 747
 748                 this.canvasEl.width = this.imageEl.OriginHeight * this.getScaleLevel();
 749                 this.canvasEl.height = this.imageEl.OriginWidth * this.getScaleLevel();
 750
 751                 if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
 752                     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);
 753                     break;
 754                 }
 755
 756                 this.contextEl.drawImage(canvasEl, 0, 0, this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 757
 758                 break;
 759             case 180 :
 760
 761                 this.canvasEl.width = this.imageEl.OriginWidth * this.getScaleLevel();
 762                 this.canvasEl.height = this.imageEl.OriginHeight * this.getScaleLevel();
 763
 764                 if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
 765                     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);
 766                     break;
 767                 }
 768
 769                 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);
 770
 771                 break;
 772             case 270 :
 773
 774                 this.canvasEl.width = this.imageEl.OriginHeight * this.getScaleLevel();
 775                 this.canvasEl.height = this.imageEl.OriginWidth * this.getScaleLevel();
 776
 777                 if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
 778                     this.contextEl.drawImage(canvasEl, 0, 0, this.canvasEl.width, this.canvasEl.height, 0, 0, this.canvasEl.width, this.canvasEl.height);
 779                     break;
 780                 }
 781
 782                 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);
 783
 784                 break;
 785             default :
 786                 break;
 787         }
 788
 789         this.previewEl.appendChild(this.canvasEl);
 790
 791         this.setCanvasPosition();
 792     },
 793
 794     crop : function()
 795     {
 796         if(!this.canvasLoaded){
 797             return;
 798         }
 799
 800         var imageCanvas = document.createElement("canvas");
 801
 802         var imageContext = imageCanvas.getContext("2d");
 803
 804         imageCanvas.width = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? this.imageEl.OriginWidth : this.imageEl.OriginHeight;
 805         imageCanvas.height = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? this.imageEl.OriginWidth : this.imageEl.OriginHeight;
 806
 807         var center = imageCanvas.width / 2;
 808
 809         imageContext.translate(center, center);
 810
 811         imageContext.rotate(this.rotate * Math.PI / 180);
 812
 813         imageContext.drawImage(this.imageEl, 0, 0, this.imageEl.OriginWidth, this.imageEl.OriginHeight, center * -1, center * -1, this.imageEl.OriginWidth, this.imageEl.OriginHeight);
 814
 815         var canvas = document.createElement("canvas");
 816
 817         var context = canvas.getContext("2d");
 818
 819         canvas.width = this.minWidth;
 820         canvas.height = this.minHeight;
 821
 822         switch (this.rotate) {
 823             case 0 :
 824
 825                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getWidth() / this.getScaleLevel());
 826                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getHeight() / this.getScaleLevel());
 827
 828                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 829                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 830
 831                 var targetWidth = this.minWidth - 2 * x;
 832                 var targetHeight = this.minHeight - 2 * y;
 833
 834                 var scale = 1;
 835
 836                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 837                     scale = targetWidth / width;
 838                 }
 839
 840                 if(x > 0 && y == 0){
 841                     scale = targetHeight / height;
 842                 }
 843
 844                 if(x > 0 && y > 0){
 845                     scale = targetWidth / width;
 846
 847                     if(width < height){
 848                         scale = targetHeight / height;
 849                     }
 850                 }
 851
 852                 context.scale(scale, scale);
 853
 854                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 855                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 856
 857                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 858                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 859
 860                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 861
 862                 break;
 863             case 90 :
 864
 865                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getWidth() / this.getScaleLevel());
 866                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getHeight() / this.getScaleLevel());
 867
 868                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 869                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 870
 871                 var targetWidth = this.minWidth - 2 * x;
 872                 var targetHeight = this.minHeight - 2 * y;
 873
 874                 var scale = 1;
 875
 876                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 877                     scale = targetWidth / width;
 878                 }
 879
 880                 if(x > 0 && y == 0){
 881                     scale = targetHeight / height;
 882                 }
 883
 884                 if(x > 0 && y > 0){
 885                     scale = targetWidth / width;
 886
 887                     if(width < height){
 888                         scale = targetHeight / height;
 889                     }
 890                 }
 891
 892                 context.scale(scale, scale);
 893
 894                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 895                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 896
 897                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 898                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 899
 900                 sx += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight) : 0;
 901
 902                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 903
 904                 break;
 905             case 180 :
 906
 907                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getWidth() / this.getScaleLevel());
 908                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getHeight() / this.getScaleLevel());
 909
 910                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 911                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 912
 913                 var targetWidth = this.minWidth - 2 * x;
 914                 var targetHeight = this.minHeight - 2 * y;
 915
 916                 var scale = 1;
 917
 918                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 919                     scale = targetWidth / width;
 920                 }
 921
 922                 if(x > 0 && y == 0){
 923                     scale = targetHeight / height;
 924                 }
 925
 926                 if(x > 0 && y > 0){
 927                     scale = targetWidth / width;
 928
 929                     if(width < height){
 930                         scale = targetHeight / height;
 931                     }
 932                 }
 933
 934                 context.scale(scale, scale);
 935
 936                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 937                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 938
 939                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 940                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 941
 942                 sx += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? 0 : Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight);
 943                 sy += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight) : 0;
 944
 945                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 946
 947                 break;
 948             case 270 :
 949
 950                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getWidth() / this.getScaleLevel());
 951                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getHeight() / this.getScaleLevel());
 952
 953                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 954                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 955
 956                 var targetWidth = this.minWidth - 2 * x;
 957                 var targetHeight = this.minHeight - 2 * y;
 958
 959                 var scale = 1;
 960
 961                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 962                     scale = targetWidth / width;
 963                 }
 964
 965                 if(x > 0 && y == 0){
 966                     scale = targetHeight / height;
 967                 }
 968
 969                 if(x > 0 && y > 0){
 970                     scale = targetWidth / width;
 971
 972                     if(width < height){
 973                         scale = targetHeight / height;
 974                     }
 975                 }
 976
 977                 context.scale(scale, scale);
 978
 979                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 980                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 981
 982                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 983                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 984
 985                 sy += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? 0 : Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight);
 986
 987                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 988
 989                 break;
 990             default :
 991                 break;
 992         }
 993
 994         this.cropData = canvas.toDataURL(this.cropType);
 995
 996         if(this.fireEvent('crop', this, this.cropData) !== false){
 997             this.process(this.file, this.cropData);
 998         }
 999
1000         return;
1001
1002     },
1003
1004     setThumbBoxSize : function()
1005     {
1006         var width, height;
1007
1008         if(this.isDocument && typeof(this.imageEl) != 'undefined'){
1009             width = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.max(this.minWidth, this.minHeight) : Math.min(this.minWidth, this.minHeight);
1010             height = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.min(this.minWidth, this.minHeight) : Math.max(this.minWidth, this.minHeight);
1011
1012             this.minWidth = width;
1013             this.minHeight = height;
1014
1015             if(this.rotate == 90 || this.rotate == 270){
1016                 this.minWidth = height;
1017                 this.minHeight = width;
1018             }
1019         }
1020
1021         height = 300;
1022         width = Math.ceil(this.minWidth * height / this.minHeight);
1023
1024         if(this.minWidth > this.minHeight){
1025             width = 300;
1026             height = Math.ceil(this.minHeight * width / this.minWidth);
1027         }
1028
1029         this.thumbEl.setStyle({
1030             width : width + 'px',
1031             height : height + 'px'
1032         });
1033
1034         return;
1035
1036     },
1037
1038     setThumbBoxPosition : function()
1039     {
1040         var x = Math.ceil((this.bodyEl.getWidth() - this.thumbEl.getWidth()) / 2 );
1041         var y = Math.ceil((this.bodyEl.getHeight() - this.thumbEl.getHeight()) / 2);
1042
1043         this.thumbEl.setLeft(x);
1044         this.thumbEl.setTop(y);
1045
1046     },
1047
1048     baseRotateLevel : function()
1049     {
1050         this.baseRotate = 1;
1051
1052         if(
1053                 typeof(this.exif) != 'undefined' &&
1054                 typeof(this.exif[Roo.bootstrap.UploadCropbox['tags']['Orientation']]) != 'undefined' &&
1055                 [1, 3, 6, 8].indexOf(this.exif[Roo.bootstrap.UploadCropbox['tags']['Orientation']]) != -1
1056         ){
1057             this.baseRotate = this.exif[Roo.bootstrap.UploadCropbox['tags']['Orientation']];
1058         }
1059
1060         this.rotate = Roo.bootstrap.UploadCropbox['Orientation'][this.baseRotate];
1061
1062     },
1063
1064     baseScaleLevel : function()
1065     {
1066         var width, height;
1067
1068         if(this.isDocument){
1069
1070             if(this.baseRotate == 6 || this.baseRotate == 8){
1071
1072                 height = this.thumbEl.getHeight();
1073                 this.baseScale = height / this.imageEl.OriginWidth;
1074
1075                 if(this.imageEl.OriginHeight * this.baseScale > this.thumbEl.getWidth()){
1076                     width = this.thumbEl.getWidth();
1077                     this.baseScale = width / this.imageEl.OriginHeight;
1078                 }
1079
1080                 return;
1081             }
1082
1083             height = this.thumbEl.getHeight();
1084             this.baseScale = height / this.imageEl.OriginHeight;
1085
1086             if(this.imageEl.OriginWidth * this.baseScale > this.thumbEl.getWidth()){
1087                 width = this.thumbEl.getWidth();
1088                 this.baseScale = width / this.imageEl.OriginWidth;
1089             }
1090
1091             return;
1092         }
1093
1094         if(this.baseRotate == 6 || this.baseRotate == 8){
1095
1096             width = this.thumbEl.getHeight();
1097             this.baseScale = width / this.imageEl.OriginHeight;
1098
1099             if(this.imageEl.OriginHeight * this.baseScale < this.thumbEl.getWidth()){
1100                 height = this.thumbEl.getWidth();
1101                 this.baseScale = height / this.imageEl.OriginHeight;
1102             }
1103
1104             if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
1105                 height = this.thumbEl.getWidth();
1106                 this.baseScale = height / this.imageEl.OriginHeight;
1107
1108                 if(this.imageEl.OriginWidth * this.baseScale < this.thumbEl.getHeight()){
1109                     width = this.thumbEl.getHeight();
1110                     this.baseScale = width / this.imageEl.OriginWidth;
1111                 }
1112             }
1113
1114             return;
1115         }
1116
1117         width = this.thumbEl.getWidth();
1118         this.baseScale = width / this.imageEl.OriginWidth;
1119
1120         if(this.imageEl.OriginHeight * this.baseScale < this.thumbEl.getHeight()){
1121             height = this.thumbEl.getHeight();
1122             this.baseScale = height / this.imageEl.OriginHeight;
1123         }
1124
1125         if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
1126
1127             height = this.thumbEl.getHeight();
1128             this.baseScale = height / this.imageEl.OriginHeight;
1129
1130             if(this.imageEl.OriginWidth * this.baseScale < this.thumbEl.getWidth()){
1131                 width = this.thumbEl.getWidth();
1132                 this.baseScale = width / this.imageEl.OriginWidth;
1133             }
1134
1135         }
1136
1137         return;
1138     },
1139
1140     getScaleLevel : function()
1141     {
1142         return this.baseScale * Math.pow(1.1, this.scale);
1143     },
1144
1145     onTouchStart : function(e)
1146     {
1147         if(!this.canvasLoaded){
1148             this.beforeSelectFile(e);
1149             return;
1150         }
1151
1152         var touches = e.browserEvent.touches;
1153
1154         if(!touches){
1155             return;
1156         }
1157
1158         if(touches.length == 1){
1159             this.onMouseDown(e);
1160             return;
1161         }
1162
1163         if(touches.length != 2){
1164             return;
1165         }
1166
1167         var coords = [];
1168
1169         for(var i = 0, finger; finger = touches[i]; i++){
1170             coords.push(finger.pageX, finger.pageY);
1171         }
1172
1173         var x = Math.pow(coords[0] - coords[2], 2);
1174         var y = Math.pow(coords[1] - coords[3], 2);
1175
1176         this.startDistance = Math.sqrt(x + y);
1177
1178         this.startScale = this.scale;
1179
1180         this.pinching = true;
1181         this.dragable = false;
1182
1183     },
1184
1185     onTouchMove : function(e)
1186     {
1187         if(!this.pinching && !this.dragable){
1188             return;
1189         }
1190
1191         var touches = e.browserEvent.touches;
1192
1193         if(!touches){
1194             return;
1195         }
1196
1197         if(this.dragable){
1198             this.onMouseMove(e);
1199             return;
1200         }
1201
1202         var coords = [];
1203
1204         for(var i = 0, finger; finger = touches[i]; i++){
1205             coords.push(finger.pageX, finger.pageY);
1206         }
1207
1208         var x = Math.pow(coords[0] - coords[2], 2);
1209         var y = Math.pow(coords[1] - coords[3], 2);
1210
1211         this.endDistance = Math.sqrt(x + y);
1212
1213         this.scale = this.startScale + Math.floor(Math.log(this.endDistance / this.startDistance) / Math.log(1.1));
1214
1215         if(!this.zoomable()){
1216             this.scale = this.startScale;
1217             return;
1218         }
1219
1220         this.draw();
1221
1222     },
1223
1224     onTouchEnd : function(e)
1225     {
1226         this.pinching = false;
1227         this.dragable = false;
1228
1229     },
1230
1231     process : function(file, crop)
1232     {
1233         this.xhr = new XMLHttpRequest();
1234
1235         file.xhr = this.xhr;
1236
1237         this.xhr.open(this.method, this.url, true);
1238
1239         var headers = {
1240             "Accept": "application/json",
1241             "Cache-Control": "no-cache",
1242             "X-Requested-With": "XMLHttpRequest"
1243         };
1244
1245         for (var headerName in headers) {
1246             var headerValue = headers[headerName];
1247             if (headerValue) {
1248                 this.xhr.setRequestHeader(headerName, headerValue);
1249             }
1250         }
1251
1252         var _this = this;
1253
1254         this.xhr.onload = function()
1255         {
1256             _this.xhrOnLoad(_this.xhr);
1257         }
1258
1259         this.xhr.onerror = function()
1260         {
1261             _this.xhrOnError(_this.xhr);
1262         }
1263
1264         var formData = new FormData();
1265
1266         formData.append('returnHTML', 'NO');
1267
1268         if(crop){
1269             formData.append('crop', crop);
1270         }
1271
1272         if(typeof(file) != 'undefined' && (typeof(file.id) == 'undefined' || file.id * 1 < 1)){
1273             formData.append(this.paramName, file, file.name);
1274         }
1275
1276         if(typeof(file.filename) != 'undefined'){
1277             formData.append('filename', file.filename);
1278         }
1279
1280         if(typeof(file.mimetype) != 'undefined'){
1281             formData.append('mimetype', file.mimetype);
1282         }
1283
1284         if(this.fireEvent('arrange', this, formData) != false){
1285             this.xhr.send(formData);
1286         };
1287     },
1288
1289     xhrOnLoad : function(xhr)
1290     {
1291         if (xhr.readyState !== 4) {
1292             this.fireEvent('exception', this, xhr);
1293             return;
1294         }
1295
1296         var response = Roo.decode(xhr.responseText);
1297
1298         if(!response.success){
1299             this.fireEvent('exception', this, xhr);
1300             return;
1301         }
1302
1303         var response = Roo.decode(xhr.responseText);
1304
1305         this.fireEvent('upload', this, response);
1306
1307     },
1308
1309     xhrOnError : function()
1310     {
1311         Roo.log('xhr on error');
1312
1313         var response = Roo.decode(xhr.responseText);
1314
1315         Roo.log(response);
1316
1317     },
1318
1319     prepare : function(file)
1320     {
1321         this.file = false;
1322         this.exif = {};
1323
1324         if(typeof(file) === 'string'){
1325             this.loadCanvas(file);
1326             return;
1327         }
1328
1329         if(!file || !this.urlAPI){
1330             return;
1331         }
1332
1333         this.file = file;
1334         this.cropType = file.type;
1335
1336         var _this = this;
1337
1338         if(this.fireEvent('prepare', this, this.file) != false){
1339
1340             var reader = new FileReader();
1341
1342             reader.onload = function (e) {
1343                 if (e.target.error) {
1344                     Roo.log(e.target.error);
1345                     return;
1346                 }
1347
1348                 var buffer = e.target.result,
1349                     dataView = new DataView(buffer),
1350                     offset = 2,
1351                     maxOffset = dataView.byteLength - 4,
1352                     markerBytes,
1353                     markerLength;
1354
1355                 if (dataView.getUint16(0) === 0xffd8) {
1356                     while (offset < maxOffset) {
1357                         markerBytes = dataView.getUint16(offset);
1358
1359                         if ((markerBytes >= 0xffe0 && markerBytes <= 0xffef) || markerBytes === 0xfffe) {
1360                             markerLength = dataView.getUint16(offset + 2) + 2;
1361                             if (offset + markerLength > dataView.byteLength) {
1362                                 Roo.log('Invalid meta data: Invalid segment size.');
1363                                 break;
1364                             }
1365
1366                             if(markerBytes == 0xffe1){
1367                                 _this.parseExifData(
1368                                     dataView,
1369                                     offset,
1370                                     markerLength
1371                                 );
1372                             }
1373
1374                             offset += markerLength;
1375
1376                             continue;
1377                         }
1378
1379                         break;
1380                     }
1381
1382                 }
1383
1384                 var url = _this.urlAPI.createObjectURL(_this.file);
1385
1386                 _this.loadCanvas(url);
1387
1388                 return;
1389             }
1390
1391             reader.readAsArrayBuffer(this.file);
1392
1393         }
1394
1395     },
1396
1397     parseExifData : function(dataView, offset, length)
1398     {
1399         var tiffOffset = offset + 10,
1400             littleEndian,
1401             dirOffset;
1402
1403         if (dataView.getUint32(offset + 4) !== 0x45786966) {
1404             // No Exif data, might be XMP data instead
1405             return;
1406         }
1407
1408         // Check for the ASCII code for "Exif" (0x45786966):
1409         if (dataView.getUint32(offset + 4) !== 0x45786966) {
1410             // No Exif data, might be XMP data instead
1411             return;
1412         }
1413         if (tiffOffset + 8 > dataView.byteLength) {
1414             Roo.log('Invalid Exif data: Invalid segment size.');
1415             return;
1416         }
1417         // Check for the two null bytes:
1418         if (dataView.getUint16(offset + 8) !== 0x0000) {
1419             Roo.log('Invalid Exif data: Missing byte alignment offset.');
1420             return;
1421         }
1422         // Check the byte alignment:
1423         switch (dataView.getUint16(tiffOffset)) {
1424         case 0x4949:
1425             littleEndian = true;
1426             break;
1427         case 0x4D4D:
1428             littleEndian = false;
1429             break;
1430         default:
1431             Roo.log('Invalid Exif data: Invalid byte alignment marker.');
1432             return;
1433         }
1434         // Check for the TIFF tag marker (0x002A):
1435         if (dataView.getUint16(tiffOffset + 2, littleEndian) !== 0x002A) {
1436             Roo.log('Invalid Exif data: Missing TIFF marker.');
1437             return;
1438         }
1439         // Retrieve the directory offset bytes, usually 0x00000008 or 8 decimal:
1440         dirOffset = dataView.getUint32(tiffOffset + 4, littleEndian);
1441
1442         this.parseExifTags(
1443             dataView,
1444             tiffOffset,
1445             tiffOffset + dirOffset,
1446             littleEndian
1447         );
1448     },
1449
1450     parseExifTags : function(dataView, tiffOffset, dirOffset, littleEndian)
1451     {
1452         var tagsNumber,
1453             dirEndOffset,
1454             i;
1455         if (dirOffset + 6 > dataView.byteLength) {
1456             Roo.log('Invalid Exif data: Invalid directory offset.');
1457             return;
1458         }
1459         tagsNumber = dataView.getUint16(dirOffset, littleEndian);
1460         dirEndOffset = dirOffset + 2 + 12 * tagsNumber;
1461         if (dirEndOffset + 4 > dataView.byteLength) {
1462             Roo.log('Invalid Exif data: Invalid directory size.');
1463             return;
1464         }
1465         for (i = 0; i < tagsNumber; i += 1) {
1466             this.parseExifTag(
1467                 dataView,
1468                 tiffOffset,
1469                 dirOffset + 2 + 12 * i, // tag offset
1470                 littleEndian
1471             );
1472         }
1473         // Return the offset to the next directory:
1474         return dataView.getUint32(dirEndOffset, littleEndian);
1475     },
1476
1477     parseExifTag : function (dataView, tiffOffset, offset, littleEndian)
1478     {
1479         var tag = dataView.getUint16(offset, littleEndian);
1480
1481         this.exif[tag] = this.getExifValue(
1482             dataView,
1483             tiffOffset,
1484             offset,
1485             dataView.getUint16(offset + 2, littleEndian), // tag type
1486             dataView.getUint32(offset + 4, littleEndian), // tag length
1487             littleEndian
1488         );
1489     },
1490
1491     getExifValue : function (dataView, tiffOffset, offset, type, length, littleEndian)
1492     {
1493         var tagType = Roo.bootstrap.UploadCropbox.exifTagTypes[type],
1494             tagSize,
1495             dataOffset,
1496             values,
1497             i,
1498             str,
1499             c;
1500
1501         if (!tagType) {
1502             Roo.log('Invalid Exif data: Invalid tag type.');
1503             return;
1504         }
1505
1506         tagSize = tagType.size * length;
1507         // Determine if the value is contained in the dataOffset bytes,
1508         // or if the value at the dataOffset is a pointer to the actual data:
1509         dataOffset = tagSize > 4 ?
1510                 tiffOffset + dataView.getUint32(offset + 8, littleEndian) : (offset + 8);
1511         if (dataOffset + tagSize > dataView.byteLength) {
1512             Roo.log('Invalid Exif data: Invalid data offset.');
1513             return;
1514         }
1515         if (length === 1) {
1516             return tagType.getValue(dataView, dataOffset, littleEndian);
1517         }
1518         values = [];
1519         for (i = 0; i < length; i += 1) {
1520             values[i] = tagType.getValue(dataView, dataOffset + i * tagType.size, littleEndian);
1521         }
1522
1523         if (tagType.ascii) {
1524             str = '';
1525             // Concatenate the chars:
1526             for (i = 0; i < values.length; i += 1) {
1527                 c = values[i];
1528                 // Ignore the terminating NULL byte(s):
1529                 if (c === '\u0000') {
1530                     break;
1531                 }
1532                 str += c;
1533             }
1534             return str;
1535         }
1536         return values;
1537     }
1538
1539 });
1540
1541 Roo.apply(Roo.bootstrap.UploadCropbox, {
1542     tags : {
1543         'Orientation': 0x0112
1544     },
1545
1546     Orientation: {
1547             1: 0, //'top-left',
1548 //            2: 'top-right',
1549             3: 180, //'bottom-right',
1550 //            4: 'bottom-left',
1551 //            5: 'left-top',
1552             6: 90, //'right-top',
1553 //            7: 'right-bottom',
1554             8: 270 //'left-bottom'
1555     },
1556
1557     exifTagTypes : {
1558         // byte, 8-bit unsigned int:
1559         1: {
1560             getValue: function (dataView, dataOffset) {
1561                 return dataView.getUint8(dataOffset);
1562             },
1563             size: 1
1564         },
1565         // ascii, 8-bit byte:
1566         2: {
1567             getValue: function (dataView, dataOffset) {
1568                 return String.fromCharCode(dataView.getUint8(dataOffset));
1569             },
1570             size: 1,
1571             ascii: true
1572         },
1573         // short, 16 bit int:
1574         3: {
1575             getValue: function (dataView, dataOffset, littleEndian) {
1576                 return dataView.getUint16(dataOffset, littleEndian);
1577             },
1578             size: 2
1579         },
1580         // long, 32 bit int:
1581         4: {
1582             getValue: function (dataView, dataOffset, littleEndian) {
1583                 return dataView.getUint32(dataOffset, littleEndian);
1584             },
1585             size: 4
1586         },
1587         // rational = two long values, first is numerator, second is denominator:
1588         5: {
1589             getValue: function (dataView, dataOffset, littleEndian) {
1590                 return dataView.getUint32(dataOffset, littleEndian) /
1591                     dataView.getUint32(dataOffset + 4, littleEndian);
1592             },
1593             size: 8
1594         },
1595         // slong, 32 bit signed int:
1596         9: {
1597             getValue: function (dataView, dataOffset, littleEndian) {
1598                 return dataView.getInt32(dataOffset, littleEndian);
1599             },
1600             size: 4
1601         },
1602         // srational, two slongs, first is numerator, second is denominator:
1603         10: {
1604             getValue: function (dataView, dataOffset, littleEndian) {
1605                 return dataView.getInt32(dataOffset, littleEndian) /
1606                     dataView.getInt32(dataOffset + 4, littleEndian);
1607             },
1608             size: 8
1609         }
1610     },
1611
1612     footer : {
1613         STANDARD : [
1614             {
1615                 tag : 'div',
1616                 cls : 'btn-group roo-upload-cropbox-rotate-left',
1617                 action : 'rotate-left',
1618                 cn : [
1619                     {
1620                         tag : 'button',
1621                         cls : 'btn btn-default',
1622                         html : '<i class="fa fa-undo"></i>'
1623                     }
1624                 ]
1625             },
1626             {
1627                 tag : 'div',
1628                 cls : 'btn-group roo-upload-cropbox-picture',
1629                 action : 'picture',
1630                 cn : [
1631                     {
1632                         tag : 'button',
1633                         cls : 'btn btn-default',
1634                         html : '<i class="fa fa-picture-o"></i>'
1635                     }
1636                 ]
1637             },
1638             {
1639                 tag : 'div',
1640                 cls : 'btn-group roo-upload-cropbox-rotate-right',
1641                 action : 'rotate-right',
1642                 cn : [
1643                     {
1644                         tag : 'button',
1645                         cls : 'btn btn-default',
1646                         html : '<i class="fa fa-repeat"></i>'
1647                     }
1648                 ]
1649             }
1650         ],
1651         DOCUMENT : [
1652             {
1653                 tag : 'div',
1654                 cls : 'btn-group roo-upload-cropbox-rotate-left',
1655                 action : 'rotate-left',
1656                 cn : [
1657                     {
1658                         tag : 'button',
1659                         cls : 'btn btn-default',
1660                         html : '<i class="fa fa-undo"></i>'
1661                     }
1662                 ]
1663             },
1664             {
1665                 tag : 'div',
1666                 cls : 'btn-group roo-upload-cropbox-download',
1667                 action : 'download',
1668                 cn : [
1669                     {
1670                         tag : 'button',
1671                         cls : 'btn btn-default',
1672                         html : '<i class="fa fa-download"></i>'
1673                     }
1674                 ]
1675             },
1676             {
1677                 tag : 'div',
1678                 cls : 'btn-group roo-upload-cropbox-crop',
1679                 action : 'crop',
1680                 cn : [
1681                     {
1682                         tag : 'button',
1683                         cls : 'btn btn-default',
1684                         html : '<i class="fa fa-crop"></i>'
1685                     }
1686                 ]
1687             },
1688             {
1689                 tag : 'div',
1690                 cls : 'btn-group roo-upload-cropbox-trash',
1691                 action : 'trash',
1692                 cn : [
1693                     {
1694                         tag : 'button',
1695                         cls : 'btn btn-default',
1696                         html : '<i class="fa fa-trash"></i>'
1697                     }
1698                 ]
1699             },
1700             {
1701                 tag : 'div',
1702                 cls : 'btn-group roo-upload-cropbox-rotate-right',
1703                 action : 'rotate-right',
1704                 cn : [
1705                     {
1706                         tag : 'button',
1707                         cls : 'btn btn-default',
1708                         html : '<i class="fa fa-repeat"></i>'
1709                     }
1710                 ]
1711             }
1712         ],
1713         ROTATOR : [
1714             {
1715                 tag : 'div',
1716                 cls : 'btn-group roo-upload-cropbox-rotate-left',
1717                 action : 'rotate-left',
1718                 cn : [
1719                     {
1720                         tag : 'button',
1721                         cls : 'btn btn-default',
1722                         html : '<i class="fa fa-undo"></i>'
1723                     }
1724                 ]
1725             },
1726             {
1727                 tag : 'div',
1728                 cls : 'btn-group roo-upload-cropbox-rotate-right',
1729                 action : 'rotate-right',
1730                 cn : [
1731                     {
1732                         tag : 'button',
1733                         cls : 'btn btn-default',
1734                         html : '<i class="fa fa-repeat"></i>'
1735                     }
1736                 ]
1737             }
1738         ]
1739     }
1740 });