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