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