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         if(this.loadMask){
 801             this.maskEl.mask(this.loadingText);
 802         }
 803
 804         var imageCanvas = document.createElement("canvas");
 805
 806         var imageContext = imageCanvas.getContext("2d");
 807
 808         imageCanvas.width = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? this.imageEl.OriginWidth : this.imageEl.OriginHeight;
 809         imageCanvas.height = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? this.imageEl.OriginWidth : this.imageEl.OriginHeight;
 810
 811         var center = imageCanvas.width / 2;
 812
 813         imageContext.translate(center, center);
 814
 815         imageContext.rotate(this.rotate * Math.PI / 180);
 816
 817         imageContext.drawImage(this.imageEl, 0, 0, this.imageEl.OriginWidth, this.imageEl.OriginHeight, center * -1, center * -1, this.imageEl.OriginWidth, this.imageEl.OriginHeight);
 818
 819         var canvas = document.createElement("canvas");
 820
 821         var context = canvas.getContext("2d");
 822
 823         canvas.width = this.minWidth;
 824         canvas.height = this.minHeight;
 825
 826         switch (this.rotate) {
 827             case 0 :
 828
 829                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getWidth() / this.getScaleLevel());
 830                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getHeight() / this.getScaleLevel());
 831
 832                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 833                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 834
 835                 var targetWidth = this.minWidth - 2 * x;
 836                 var targetHeight = this.minHeight - 2 * y;
 837
 838                 var scale = 1;
 839
 840                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 841                     scale = targetWidth / width;
 842                 }
 843
 844                 if(x > 0 && y == 0){
 845                     scale = targetHeight / height;
 846                 }
 847
 848                 if(x > 0 && y > 0){
 849                     scale = targetWidth / width;
 850
 851                     if(width < height){
 852                         scale = targetHeight / height;
 853                     }
 854                 }
 855
 856                 context.scale(scale, scale);
 857
 858                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 859                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 860
 861                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 862                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 863
 864                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 865
 866                 break;
 867             case 90 :
 868
 869                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getWidth() / this.getScaleLevel());
 870                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getHeight() / this.getScaleLevel());
 871
 872                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 873                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 874
 875                 var targetWidth = this.minWidth - 2 * x;
 876                 var targetHeight = this.minHeight - 2 * y;
 877
 878                 var scale = 1;
 879
 880                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 881                     scale = targetWidth / width;
 882                 }
 883
 884                 if(x > 0 && y == 0){
 885                     scale = targetHeight / height;
 886                 }
 887
 888                 if(x > 0 && y > 0){
 889                     scale = targetWidth / width;
 890
 891                     if(width < height){
 892                         scale = targetHeight / height;
 893                     }
 894                 }
 895
 896                 context.scale(scale, scale);
 897
 898                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 899                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 900
 901                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 902                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 903
 904                 sx += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight) : 0;
 905
 906                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 907
 908                 break;
 909             case 180 :
 910
 911                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getWidth() / this.getScaleLevel());
 912                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getHeight() / this.getScaleLevel());
 913
 914                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 915                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 916
 917                 var targetWidth = this.minWidth - 2 * x;
 918                 var targetHeight = this.minHeight - 2 * y;
 919
 920                 var scale = 1;
 921
 922                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 923                     scale = targetWidth / width;
 924                 }
 925
 926                 if(x > 0 && y == 0){
 927                     scale = targetHeight / height;
 928                 }
 929
 930                 if(x > 0 && y > 0){
 931                     scale = targetWidth / width;
 932
 933                     if(width < height){
 934                         scale = targetHeight / height;
 935                     }
 936                 }
 937
 938                 context.scale(scale, scale);
 939
 940                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 941                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 942
 943                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 944                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 945
 946                 sx += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? 0 : Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight);
 947                 sy += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight) : 0;
 948
 949                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 950
 951                 break;
 952             case 270 :
 953
 954                 var width = (this.thumbEl.getWidth() / this.getScaleLevel() > this.imageEl.OriginHeight) ? this.imageEl.OriginHeight : (this.thumbEl.getWidth() / this.getScaleLevel());
 955                 var height = (this.thumbEl.getHeight() / this.getScaleLevel() > this.imageEl.OriginWidth) ? this.imageEl.OriginWidth : (this.thumbEl.getHeight() / this.getScaleLevel());
 956
 957                 var x = (this.thumbEl.getLeft(true) > this.previewEl.getLeft(true)) ? 0 : ((this.previewEl.getLeft(true) - this.thumbEl.getLeft(true)) / this.getScaleLevel());
 958                 var y = (this.thumbEl.getTop(true) > this.previewEl.getTop(true)) ? 0 : ((this.previewEl.getTop(true) - this.thumbEl.getTop(true)) / this.getScaleLevel());
 959
 960                 var targetWidth = this.minWidth - 2 * x;
 961                 var targetHeight = this.minHeight - 2 * y;
 962
 963                 var scale = 1;
 964
 965                 if((x == 0 && y == 0) || (x == 0 && y > 0)){
 966                     scale = targetWidth / width;
 967                 }
 968
 969                 if(x > 0 && y == 0){
 970                     scale = targetHeight / height;
 971                 }
 972
 973                 if(x > 0 && y > 0){
 974                     scale = targetWidth / width;
 975
 976                     if(width < height){
 977                         scale = targetHeight / height;
 978                     }
 979                 }
 980
 981                 context.scale(scale, scale);
 982
 983                 var sx = Math.min(this.canvasEl.width - this.thumbEl.getWidth(), this.thumbEl.getLeft(true) - this.previewEl.getLeft(true));
 984                 var sy = Math.min(this.canvasEl.height - this.thumbEl.getHeight(), this.thumbEl.getTop(true) - this.previewEl.getTop(true));
 985
 986                 sx = sx < 0 ? 0 : (sx / this.getScaleLevel());
 987                 sy = sy < 0 ? 0 : (sy / this.getScaleLevel());
 988
 989                 sy += (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? 0 : Math.abs(this.imageEl.OriginWidth - this.imageEl.OriginHeight);
 990
 991                 context.drawImage(imageCanvas, sx, sy, width, height, x, y, width, height);
 992
 993                 break;
 994             default :
 995                 break;
 996         }
 997
 998         this.cropData = canvas.toDataURL(this.cropType);
 999
1000         if(this.loadMask){
1001             this.maskEl.unmask();
1002         }
1003
1004         if(this.fireEvent('crop', this, this.cropData) !== false){
1005             this.process(this.file, this.cropData);
1006         }
1007
1008         return;
1009
1010     },
1011
1012     setThumbBoxSize : function()
1013     {
1014         var width, height;
1015
1016         if(this.isDocument && typeof(this.imageEl) != 'undefined'){
1017             width = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.max(this.minWidth, this.minHeight) : Math.min(this.minWidth, this.minHeight);
1018             height = (this.imageEl.OriginWidth > this.imageEl.OriginHeight) ? Math.min(this.minWidth, this.minHeight) : Math.max(this.minWidth, this.minHeight);
1019
1020             this.minWidth = width;
1021             this.minHeight = height;
1022
1023             if(this.rotate == 90 || this.rotate == 270){
1024                 this.minWidth = height;
1025                 this.minHeight = width;
1026             }
1027         }
1028
1029         height = 300;
1030         width = Math.ceil(this.minWidth * height / this.minHeight);
1031
1032         if(this.minWidth > this.minHeight){
1033             width = 300;
1034             height = Math.ceil(this.minHeight * width / this.minWidth);
1035         }
1036
1037         this.thumbEl.setStyle({
1038             width : width + 'px',
1039             height : height + 'px'
1040         });
1041
1042         return;
1043
1044     },
1045
1046     setThumbBoxPosition : function()
1047     {
1048         var x = Math.ceil((this.bodyEl.getWidth() - this.thumbEl.getWidth()) / 2 );
1049         var y = Math.ceil((this.bodyEl.getHeight() - this.thumbEl.getHeight()) / 2);
1050
1051         this.thumbEl.setLeft(x);
1052         this.thumbEl.setTop(y);
1053
1054     },
1055
1056     baseRotateLevel : function()
1057     {
1058         this.baseRotate = 1;
1059
1060         if(
1061                 typeof(this.exif) != 'undefined' &&
1062                 typeof(this.exif[Roo.bootstrap.UploadCropbox['tags']['Orientation']]) != 'undefined' &&
1063                 [1, 3, 6, 8].indexOf(this.exif[Roo.bootstrap.UploadCropbox['tags']['Orientation']]) != -1
1064         ){
1065             this.baseRotate = this.exif[Roo.bootstrap.UploadCropbox['tags']['Orientation']];
1066         }
1067
1068         this.rotate = Roo.bootstrap.UploadCropbox['Orientation'][this.baseRotate];
1069
1070     },
1071
1072     baseScaleLevel : function()
1073     {
1074         var width, height;
1075
1076         if(this.isDocument){
1077
1078             if(this.baseRotate == 6 || this.baseRotate == 8){
1079
1080                 height = this.thumbEl.getHeight();
1081                 this.baseScale = height / this.imageEl.OriginWidth;
1082
1083                 if(this.imageEl.OriginHeight * this.baseScale > this.thumbEl.getWidth()){
1084                     width = this.thumbEl.getWidth();
1085                     this.baseScale = width / this.imageEl.OriginHeight;
1086                 }
1087
1088                 return;
1089             }
1090
1091             height = this.thumbEl.getHeight();
1092             this.baseScale = height / this.imageEl.OriginHeight;
1093
1094             if(this.imageEl.OriginWidth * this.baseScale > this.thumbEl.getWidth()){
1095                 width = this.thumbEl.getWidth();
1096                 this.baseScale = width / this.imageEl.OriginWidth;
1097             }
1098
1099             return;
1100         }
1101
1102         if(this.baseRotate == 6 || this.baseRotate == 8){
1103
1104             width = this.thumbEl.getHeight();
1105             this.baseScale = width / this.imageEl.OriginHeight;
1106
1107             if(this.imageEl.OriginHeight * this.baseScale < this.thumbEl.getWidth()){
1108                 height = this.thumbEl.getWidth();
1109                 this.baseScale = height / this.imageEl.OriginHeight;
1110             }
1111
1112             if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
1113                 height = this.thumbEl.getWidth();
1114                 this.baseScale = height / this.imageEl.OriginHeight;
1115
1116                 if(this.imageEl.OriginWidth * this.baseScale < this.thumbEl.getHeight()){
1117                     width = this.thumbEl.getHeight();
1118                     this.baseScale = width / this.imageEl.OriginWidth;
1119                 }
1120             }
1121
1122             return;
1123         }
1124
1125         width = this.thumbEl.getWidth();
1126         this.baseScale = width / this.imageEl.OriginWidth;
1127
1128         if(this.imageEl.OriginHeight * this.baseScale < this.thumbEl.getHeight()){
1129             height = this.thumbEl.getHeight();
1130             this.baseScale = height / this.imageEl.OriginHeight;
1131         }
1132
1133         if(this.imageEl.OriginWidth > this.imageEl.OriginHeight){
1134
1135             height = this.thumbEl.getHeight();
1136             this.baseScale = height / this.imageEl.OriginHeight;
1137
1138             if(this.imageEl.OriginWidth * this.baseScale < this.thumbEl.getWidth()){
1139                 width = this.thumbEl.getWidth();
1140                 this.baseScale = width / this.imageEl.OriginWidth;
1141             }
1142
1143         }
1144
1145         return;
1146     },
1147
1148     getScaleLevel : function()
1149     {
1150         return this.baseScale * Math.pow(1.1, this.scale);
1151     },
1152
1153     onTouchStart : function(e)
1154     {
1155         if(!this.canvasLoaded){
1156             this.beforeSelectFile(e);
1157             return;
1158         }
1159
1160         var touches = e.browserEvent.touches;
1161
1162         if(!touches){
1163             return;
1164         }
1165
1166         if(touches.length == 1){
1167             this.onMouseDown(e);
1168             return;
1169         }
1170
1171         if(touches.length != 2){
1172             return;
1173         }
1174
1175         var coords = [];
1176
1177         for(var i = 0, finger; finger = touches[i]; i++){
1178             coords.push(finger.pageX, finger.pageY);
1179         }
1180
1181         var x = Math.pow(coords[0] - coords[2], 2);
1182         var y = Math.pow(coords[1] - coords[3], 2);
1183
1184         this.startDistance = Math.sqrt(x + y);
1185
1186         this.startScale = this.scale;
1187
1188         this.pinching = true;
1189         this.dragable = false;
1190
1191     },
1192
1193     onTouchMove : function(e)
1194     {
1195         if(!this.pinching && !this.dragable){
1196             return;
1197         }
1198
1199         var touches = e.browserEvent.touches;
1200
1201         if(!touches){
1202             return;
1203         }
1204
1205         if(this.dragable){
1206             this.onMouseMove(e);
1207             return;
1208         }
1209
1210         var coords = [];
1211
1212         for(var i = 0, finger; finger = touches[i]; i++){
1213             coords.push(finger.pageX, finger.pageY);
1214         }
1215
1216         var x = Math.pow(coords[0] - coords[2], 2);
1217         var y = Math.pow(coords[1] - coords[3], 2);
1218
1219         this.endDistance = Math.sqrt(x + y);
1220
1221         this.scale = this.startScale + Math.floor(Math.log(this.endDistance / this.startDistance) / Math.log(1.1));
1222
1223         if(!this.zoomable()){
1224             this.scale = this.startScale;
1225             return;
1226         }
1227
1228         this.draw();
1229
1230     },
1231
1232     onTouchEnd : function(e)
1233     {
1234         this.pinching = false;
1235         this.dragable = false;
1236
1237     },
1238
1239     process : function(file, crop)
1240     {
1241         this.xhr = new XMLHttpRequest();
1242
1243         file.xhr = this.xhr;
1244
1245         this.xhr.open(this.method, this.url, true);
1246
1247         var headers = {
1248             "Accept": "application/json",
1249             "Cache-Control": "no-cache",
1250             "X-Requested-With": "XMLHttpRequest"
1251         };
1252
1253         for (var headerName in headers) {
1254             var headerValue = headers[headerName];
1255             if (headerValue) {
1256                 this.xhr.setRequestHeader(headerName, headerValue);
1257             }
1258         }
1259
1260         var _this = this;
1261
1262         this.xhr.onload = function()
1263         {
1264             _this.xhrOnLoad(_this.xhr);
1265         }
1266
1267         this.xhr.onerror = function()
1268         {
1269             _this.xhrOnError(_this.xhr);
1270         }
1271
1272         var formData = new FormData();
1273
1274         formData.append('returnHTML', 'NO');
1275
1276         if(crop){
1277             formData.append('crop', crop);
1278         }
1279
1280         if(typeof(file) != 'undefined' && (typeof(file.id) == 'undefined' || file.id * 1 < 1)){
1281             formData.append(this.paramName, file, file.name);
1282         }
1283
1284         if(typeof(file.filename) != 'undefined'){
1285             formData.append('filename', file.filename);
1286         }
1287
1288         if(typeof(file.mimetype) != 'undefined'){
1289             formData.append('mimetype', file.mimetype);
1290         }
1291
1292         if(this.fireEvent('arrange', this, formData) != false){
1293             this.xhr.send(formData);
1294         };
1295     },
1296
1297     xhrOnLoad : function(xhr)
1298     {
1299         if (xhr.readyState !== 4) {
1300             this.fireEvent('exception', this, xhr);
1301             return;
1302         }
1303
1304         var response = Roo.decode(xhr.responseText);
1305
1306         if(!response.success){
1307             this.fireEvent('exception', this, xhr);
1308             return;
1309         }
1310
1311         var response = Roo.decode(xhr.responseText);
1312
1313         this.fireEvent('upload', this, response);
1314
1315     },
1316
1317     xhrOnError : function()
1318     {
1319         Roo.log('xhr on error');
1320
1321         var response = Roo.decode(xhr.responseText);
1322
1323         Roo.log(response);
1324
1325     },
1326
1327     prepare : function(file)
1328     {
1329         this.file = false;
1330         this.exif = {};
1331
1332         if(typeof(file) === 'string'){
1333             this.loadCanvas(file);
1334             return;
1335         }
1336
1337         if(!file || !this.urlAPI){
1338             return;
1339         }
1340
1341         this.file = file;
1342         this.cropType = file.type;
1343
1344         var _this = this;
1345
1346         if(this.fireEvent('prepare', this, this.file) != false){
1347
1348             var reader = new FileReader();
1349
1350             reader.onload = function (e) {
1351                 if (e.target.error) {
1352                     Roo.log(e.target.error);
1353                     return;
1354                 }
1355
1356                 var buffer = e.target.result,
1357                     dataView = new DataView(buffer),
1358                     offset = 2,
1359                     maxOffset = dataView.byteLength - 4,
1360                     markerBytes,
1361                     markerLength;
1362
1363                 if (dataView.getUint16(0) === 0xffd8) {
1364                     while (offset < maxOffset) {
1365                         markerBytes = dataView.getUint16(offset);
1366
1367                         if ((markerBytes >= 0xffe0 && markerBytes <= 0xffef) || markerBytes === 0xfffe) {
1368                             markerLength = dataView.getUint16(offset + 2) + 2;
1369                             if (offset + markerLength > dataView.byteLength) {
1370                                 Roo.log('Invalid meta data: Invalid segment size.');
1371                                 break;
1372                             }
1373
1374                             if(markerBytes == 0xffe1){
1375                                 _this.parseExifData(
1376                                     dataView,
1377                                     offset,
1378                                     markerLength
1379                                 );
1380                             }
1381
1382                             offset += markerLength;
1383
1384                             continue;
1385                         }
1386
1387                         break;
1388                     }
1389
1390                 }
1391
1392                 var url = _this.urlAPI.createObjectURL(_this.file);
1393
1394                 _this.loadCanvas(url);
1395
1396                 return;
1397             }
1398
1399             reader.readAsArrayBuffer(this.file);
1400
1401         }
1402
1403     },
1404
1405     parseExifData : function(dataView, offset, length)
1406     {
1407         var tiffOffset = offset + 10,
1408             littleEndian,
1409             dirOffset;
1410
1411         if (dataView.getUint32(offset + 4) !== 0x45786966) {
1412             // No Exif data, might be XMP data instead
1413             return;
1414         }
1415
1416         // Check for the ASCII code for "Exif" (0x45786966):
1417         if (dataView.getUint32(offset + 4) !== 0x45786966) {
1418             // No Exif data, might be XMP data instead
1419             return;
1420         }
1421         if (tiffOffset + 8 > dataView.byteLength) {
1422             Roo.log('Invalid Exif data: Invalid segment size.');
1423             return;
1424         }
1425         // Check for the two null bytes:
1426         if (dataView.getUint16(offset + 8) !== 0x0000) {
1427             Roo.log('Invalid Exif data: Missing byte alignment offset.');
1428             return;
1429         }
1430         // Check the byte alignment:
1431         switch (dataView.getUint16(tiffOffset)) {
1432         case 0x4949:
1433             littleEndian = true;
1434             break;
1435         case 0x4D4D:
1436             littleEndian = false;
1437             break;
1438         default:
1439             Roo.log('Invalid Exif data: Invalid byte alignment marker.');
1440             return;
1441         }
1442         // Check for the TIFF tag marker (0x002A):
1443         if (dataView.getUint16(tiffOffset + 2, littleEndian) !== 0x002A) {
1444             Roo.log('Invalid Exif data: Missing TIFF marker.');
1445             return;
1446         }
1447         // Retrieve the directory offset bytes, usually 0x00000008 or 8 decimal:
1448         dirOffset = dataView.getUint32(tiffOffset + 4, littleEndian);
1449
1450         this.parseExifTags(
1451             dataView,
1452             tiffOffset,
1453             tiffOffset + dirOffset,
1454             littleEndian
1455         );
1456     },
1457
1458     parseExifTags : function(dataView, tiffOffset, dirOffset, littleEndian)
1459     {
1460         var tagsNumber,
1461             dirEndOffset,
1462             i;
1463         if (dirOffset + 6 > dataView.byteLength) {
1464             Roo.log('Invalid Exif data: Invalid directory offset.');
1465             return;
1466         }
1467         tagsNumber = dataView.getUint16(dirOffset, littleEndian);
1468         dirEndOffset = dirOffset + 2 + 12 * tagsNumber;
1469         if (dirEndOffset + 4 > dataView.byteLength) {
1470             Roo.log('Invalid Exif data: Invalid directory size.');
1471             return;
1472         }
1473         for (i = 0; i < tagsNumber; i += 1) {
1474             this.parseExifTag(
1475                 dataView,
1476                 tiffOffset,
1477                 dirOffset + 2 + 12 * i, // tag offset
1478                 littleEndian
1479             );
1480         }
1481         // Return the offset to the next directory:
1482         return dataView.getUint32(dirEndOffset, littleEndian);
1483     },
1484
1485     parseExifTag : function (dataView, tiffOffset, offset, littleEndian)
1486     {
1487         var tag = dataView.getUint16(offset, littleEndian);
1488
1489         this.exif[tag] = this.getExifValue(
1490             dataView,
1491             tiffOffset,
1492             offset,
1493             dataView.getUint16(offset + 2, littleEndian), // tag type
1494             dataView.getUint32(offset + 4, littleEndian), // tag length
1495             littleEndian
1496         );
1497     },
1498
1499     getExifValue : function (dataView, tiffOffset, offset, type, length, littleEndian)
1500     {
1501         var tagType = Roo.bootstrap.UploadCropbox.exifTagTypes[type],
1502             tagSize,
1503             dataOffset,
1504             values,
1505             i,
1506             str,
1507             c;
1508
1509         if (!tagType) {
1510             Roo.log('Invalid Exif data: Invalid tag type.');
1511             return;
1512         }
1513
1514         tagSize = tagType.size * length;
1515         // Determine if the value is contained in the dataOffset bytes,
1516         // or if the value at the dataOffset is a pointer to the actual data:
1517         dataOffset = tagSize > 4 ?
1518                 tiffOffset + dataView.getUint32(offset + 8, littleEndian) : (offset + 8);
1519         if (dataOffset + tagSize > dataView.byteLength) {
1520             Roo.log('Invalid Exif data: Invalid data offset.');
1521             return;
1522         }
1523         if (length === 1) {
1524             return tagType.getValue(dataView, dataOffset, littleEndian);
1525         }
1526         values = [];
1527         for (i = 0; i < length; i += 1) {
1528             values[i] = tagType.getValue(dataView, dataOffset + i * tagType.size, littleEndian);
1529         }
1530
1531         if (tagType.ascii) {
1532             str = '';
1533             // Concatenate the chars:
1534             for (i = 0; i < values.length; i += 1) {
1535                 c = values[i];
1536                 // Ignore the terminating NULL byte(s):
1537                 if (c === '\u0000') {
1538                     break;
1539                 }
1540                 str += c;
1541             }
1542             return str;
1543         }
1544         return values;
1545     }
1546
1547 });
1548
1549 Roo.apply(Roo.bootstrap.UploadCropbox, {
1550     tags : {
1551         'Orientation': 0x0112
1552     },
1553
1554     Orientation: {
1555             1: 0, //'top-left',
1556 //            2: 'top-right',
1557             3: 180, //'bottom-right',
1558 //            4: 'bottom-left',
1559 //            5: 'left-top',
1560             6: 90, //'right-top',
1561 //            7: 'right-bottom',
1562             8: 270 //'left-bottom'
1563     },
1564
1565     exifTagTypes : {
1566         // byte, 8-bit unsigned int:
1567         1: {
1568             getValue: function (dataView, dataOffset) {
1569                 return dataView.getUint8(dataOffset);
1570             },
1571             size: 1
1572         },
1573         // ascii, 8-bit byte:
1574         2: {
1575             getValue: function (dataView, dataOffset) {
1576                 return String.fromCharCode(dataView.getUint8(dataOffset));
1577             },
1578             size: 1,
1579             ascii: true
1580         },
1581         // short, 16 bit int:
1582         3: {
1583             getValue: function (dataView, dataOffset, littleEndian) {
1584                 return dataView.getUint16(dataOffset, littleEndian);
1585             },
1586             size: 2
1587         },
1588         // long, 32 bit int:
1589         4: {
1590             getValue: function (dataView, dataOffset, littleEndian) {
1591                 return dataView.getUint32(dataOffset, littleEndian);
1592             },
1593             size: 4
1594         },
1595         // rational = two long values, first is numerator, second is denominator:
1596         5: {
1597             getValue: function (dataView, dataOffset, littleEndian) {
1598                 return dataView.getUint32(dataOffset, littleEndian) /
1599                     dataView.getUint32(dataOffset + 4, littleEndian);
1600             },
1601             size: 8
1602         },
1603         // slong, 32 bit signed int:
1604         9: {
1605             getValue: function (dataView, dataOffset, littleEndian) {
1606                 return dataView.getInt32(dataOffset, littleEndian);
1607             },
1608             size: 4
1609         },
1610         // srational, two slongs, first is numerator, second is denominator:
1611         10: {
1612             getValue: function (dataView, dataOffset, littleEndian) {
1613                 return dataView.getInt32(dataOffset, littleEndian) /
1614                     dataView.getInt32(dataOffset + 4, littleEndian);
1615             },
1616             size: 8
1617         }
1618     },
1619
1620     footer : {
1621         STANDARD : [
1622             {
1623                 tag : 'div',
1624                 cls : 'btn-group roo-upload-cropbox-rotate-left',
1625                 action : 'rotate-left',
1626                 cn : [
1627                     {
1628                         tag : 'button',
1629                         cls : 'btn btn-default',
1630                         html : '<i class="fa fa-undo"></i>'
1631                     }
1632                 ]
1633             },
1634             {
1635                 tag : 'div',
1636                 cls : 'btn-group roo-upload-cropbox-picture',
1637                 action : 'picture',
1638                 cn : [
1639                     {
1640                         tag : 'button',
1641                         cls : 'btn btn-default',
1642                         html : '<i class="fa fa-picture-o"></i>'
1643                     }
1644                 ]
1645             },
1646             {
1647                 tag : 'div',
1648                 cls : 'btn-group roo-upload-cropbox-rotate-right',
1649                 action : 'rotate-right',
1650                 cn : [
1651                     {
1652                         tag : 'button',
1653                         cls : 'btn btn-default',
1654                         html : '<i class="fa fa-repeat"></i>'
1655                     }
1656                 ]
1657             }
1658         ],
1659         DOCUMENT : [
1660             {
1661                 tag : 'div',
1662                 cls : 'btn-group roo-upload-cropbox-rotate-left',
1663                 action : 'rotate-left',
1664                 cn : [
1665                     {
1666                         tag : 'button',
1667                         cls : 'btn btn-default',
1668                         html : '<i class="fa fa-undo"></i>'
1669                     }
1670                 ]
1671             },
1672             {
1673                 tag : 'div',
1674                 cls : 'btn-group roo-upload-cropbox-download',
1675                 action : 'download',
1676                 cn : [
1677                     {
1678                         tag : 'button',
1679                         cls : 'btn btn-default',
1680                         html : '<i class="fa fa-download"></i>'
1681                     }
1682                 ]
1683             },
1684             {
1685                 tag : 'div',
1686                 cls : 'btn-group roo-upload-cropbox-crop',
1687                 action : 'crop',
1688                 cn : [
1689                     {
1690                         tag : 'button',
1691                         cls : 'btn btn-default',
1692                         html : '<i class="fa fa-crop"></i>'
1693                     }
1694                 ]
1695             },
1696             {
1697                 tag : 'div',
1698                 cls : 'btn-group roo-upload-cropbox-trash',
1699                 action : 'trash',
1700                 cn : [
1701                     {
1702                         tag : 'button',
1703                         cls : 'btn btn-default',
1704                         html : '<i class="fa fa-trash"></i>'
1705                     }
1706                 ]
1707             },
1708             {
1709                 tag : 'div',
1710                 cls : 'btn-group roo-upload-cropbox-rotate-right',
1711                 action : 'rotate-right',
1712                 cn : [
1713                     {
1714                         tag : 'button',
1715                         cls : 'btn btn-default',
1716                         html : '<i class="fa fa-repeat"></i>'
1717                     }
1718                 ]
1719             }
1720         ],
1721         ROTATOR : [
1722             {
1723                 tag : 'div',
1724                 cls : 'btn-group roo-upload-cropbox-rotate-left',
1725                 action : 'rotate-left',
1726                 cn : [
1727                     {
1728                         tag : 'button',
1729                         cls : 'btn btn-default',
1730                         html : '<i class="fa fa-undo"></i>'
1731                     }
1732                 ]
1733             },
1734             {
1735                 tag : 'div',
1736                 cls : 'btn-group roo-upload-cropbox-rotate-right',
1737                 action : 'rotate-right',
1738                 cn : [
1739                     {
1740                         tag : 'button',
1741                         cls : 'btn btn-default',
1742                         html : '<i class="fa fa-repeat"></i>'
1743                     }
1744                 ]
1745             }
1746         ]
1747     }
1748 });