wp-admin/js/image-edit.js

   1 /* global imageEditL10n, ajaxurl, confirm */
   2
   3 (function($) {
   4 var imageEdit = window.imageEdit = {
   5         iasapi : {},
   6         hold : {},
   7         postid : '',
   8
   9         intval : function(f) {
  10                 return f | 0;
  11         },
  12
  13         setDisabled : function(el, s) {
  14                 if ( s ) {
  15                         el.removeClass('disabled');
  16                         $('input', el).removeAttr('disabled');
  17                 } else {
  18                         el.addClass('disabled');
  19                         $('input', el).prop('disabled', true);
  20                 }
  21         },
  22
  23         init : function(postid) {
  24                 var t = this, old = $('#image-editor-' + t.postid),
  25                         x = t.intval( $('#imgedit-x-' + postid).val() ),
  26                         y = t.intval( $('#imgedit-y-' + postid).val() );
  27
  28                 if ( t.postid !== postid && old.length ) {
  29                         t.close(t.postid);
  30                 }
  31
  32                 t.hold.w = t.hold.ow = x;
  33                 t.hold.h = t.hold.oh = y;
  34                 t.hold.xy_ratio = x / y;
  35                 t.hold.sizer = parseFloat( $('#imgedit-sizer-' + postid).val() );
  36                 t.postid = postid;
  37                 $('#imgedit-response-' + postid).empty();
  38
  39                 $('input[type="text"]', '#imgedit-panel-' + postid).keypress(function(e) {
  40                         var k = e.keyCode;
  41
  42                         if ( 36 < k && k < 41 ) {
  43                                 $(this).blur();
  44                         }
  45
  46                         if ( 13 === k ) {
  47                                 e.preventDefault();
  48                                 e.stopPropagation();
  49                                 return false;
  50                         }
  51                 });
  52         },
  53
  54         toggleEditor : function(postid, toggle) {
  55                 var wait = $('#imgedit-wait-' + postid);
  56
  57                 if ( toggle ) {
  58                         wait.height( $('#imgedit-panel-' + postid).height() ).fadeIn('fast');
  59                 } else {
  60                         wait.fadeOut('fast');
  61                 }
  62         },
  63
  64         toggleHelp : function(el) {
  65                 $(el).siblings('.imgedit-help').slideToggle('fast');
  66                 return false;
  67         },
  68
  69         getTarget : function(postid) {
  70                 return $('input[name="imgedit-target-' + postid + '"]:checked', '#imgedit-save-target-' + postid).val() || 'full';
  71         },
  72
  73         scaleChanged : function(postid, x) {
  74                 var w = $('#imgedit-scale-width-' + postid), h = $('#imgedit-scale-height-' + postid),
  75                 warn = $('#imgedit-scale-warn-' + postid), w1 = '', h1 = '';
  76
  77                 if ( x ) {
  78                         h1 = ( w.val() !== '' ) ? Math.round( w.val() / this.hold.xy_ratio ) : '';
  79                         h.val( h1 );
  80                 } else {
  81                         w1 = ( h.val() !== '' ) ? Math.round( h.val() * this.hold.xy_ratio ) : '';
  82                         w.val( w1 );
  83                 }
  84
  85                 if ( ( h1 && h1 > this.hold.oh ) || ( w1 && w1 > this.hold.ow ) ) {
  86                         warn.css('visibility', 'visible');
  87                 } else {
  88                         warn.css('visibility', 'hidden');
  89                 }
  90         },
  91
  92         getSelRatio : function(postid) {
  93                 var x = this.hold.w, y = this.hold.h,
  94                         X = this.intval( $('#imgedit-crop-width-' + postid).val() ),
  95                         Y = this.intval( $('#imgedit-crop-height-' + postid).val() );
  96
  97                 if ( X && Y ) {
  98                         return X + ':' + Y;
  99                 }
 100
 101                 if ( x && y ) {
 102                         return x + ':' + y;
 103                 }
 104
 105                 return '1:1';
 106         },
 107
 108         filterHistory : function(postid, setSize) {
 109                 // apply undo state to history
 110                 var history = $('#imgedit-history-' + postid).val(), pop, n, o, i, op = [];
 111
 112                 if ( history !== '' ) {
 113                         history = JSON.parse(history);
 114                         pop = this.intval( $('#imgedit-undone-' + postid).val() );
 115                         if ( pop > 0 ) {
 116                                 while ( pop > 0 ) {
 117                                         history.pop();
 118                                         pop--;
 119                                 }
 120                         }
 121
 122                         if ( setSize ) {
 123                                 if ( !history.length ) {
 124                                         this.hold.w = this.hold.ow;
 125                                         this.hold.h = this.hold.oh;
 126                                         return '';
 127                                 }
 128
 129                                 // restore
 130                                 o = history[history.length - 1];
 131                                 o = o.c || o.r || o.f || false;
 132
 133                                 if ( o ) {
 134                                         this.hold.w = o.fw;
 135                                         this.hold.h = o.fh;
 136                                 }
 137                         }
 138
 139                         // filter the values
 140                         for ( n in history ) {
 141                                 i = history[n];
 142                                 if ( i.hasOwnProperty('c') ) {
 143                                         op[n] = { 'c': { 'x': i.c.x, 'y': i.c.y, 'w': i.c.w, 'h': i.c.h } };
 144                                 } else if ( i.hasOwnProperty('r') ) {
 145                                         op[n] = { 'r': i.r.r };
 146                                 } else if ( i.hasOwnProperty('f') ) {
 147                                         op[n] = { 'f': i.f.f };
 148                                 }
 149                         }
 150                         return JSON.stringify(op);
 151                 }
 152                 return '';
 153         },
 154
 155         refreshEditor : function(postid, nonce, callback) {
 156                 var t = this, data, img;
 157
 158                 t.toggleEditor(postid, 1);
 159                 data = {
 160                         'action': 'imgedit-preview',
 161                         '_ajax_nonce': nonce,
 162                         'postid': postid,
 163                         'history': t.filterHistory(postid, 1),
 164                         'rand': t.intval(Math.random() * 1000000)
 165                 };
 166
 167                 img = $('<img id="image-preview-' + postid + '" />')
 168                         .on('load', function() {
 169                                 var max1, max2, parent = $('#imgedit-crop-' + postid), t = imageEdit;
 170
 171                                 parent.empty().append(img);
 172
 173                                 // w, h are the new full size dims
 174                                 max1 = Math.max( t.hold.w, t.hold.h );
 175                                 max2 = Math.max( $(img).width(), $(img).height() );
 176                                 t.hold.sizer = max1 > max2 ? max2 / max1 : 1;
 177
 178                                 t.initCrop(postid, img, parent);
 179                                 t.setCropSelection(postid, 0);
 180
 181                                 if ( (typeof callback !== 'undefined') && callback !== null ) {
 182                                         callback();
 183                                 }
 184
 185                                 if ( $('#imgedit-history-' + postid).val() && $('#imgedit-undone-' + postid).val() === '0' ) {
 186                                         $('input.imgedit-submit-btn', '#imgedit-panel-' + postid).removeAttr('disabled');
 187                                 } else {
 188                                         $('input.imgedit-submit-btn', '#imgedit-panel-' + postid).prop('disabled', true);
 189                                 }
 190
 191                                 t.toggleEditor(postid, 0);
 192                         })
 193                         .on('error', function() {
 194                                 $('#imgedit-crop-' + postid).empty().append('<div class="error"><p>' + imageEditL10n.error + '</p></div>');
 195                                 t.toggleEditor(postid, 0);
 196                         })
 197                         .attr('src', ajaxurl + '?' + $.param(data));
 198         },
 199
 200         action : function(postid, nonce, action) {
 201                 var t = this, data, w, h, fw, fh;
 202
 203                 if ( t.notsaved(postid) ) {
 204                         return false;
 205                 }
 206
 207                 data = {
 208                         'action': 'image-editor',
 209                         '_ajax_nonce': nonce,
 210                         'postid': postid
 211                 };
 212
 213                 if ( 'scale' === action ) {
 214                         w = $('#imgedit-scale-width-' + postid),
 215                         h = $('#imgedit-scale-height-' + postid),
 216                         fw = t.intval(w.val()),
 217                         fh = t.intval(h.val());
 218
 219                         if ( fw < 1 ) {
 220                                 w.focus();
 221                                 return false;
 222                         } else if ( fh < 1 ) {
 223                                 h.focus();
 224                                 return false;
 225                         }
 226
 227                         if ( fw === t.hold.ow || fh === t.hold.oh ) {
 228                                 return false;
 229                         }
 230
 231                         data['do'] = 'scale';
 232                         data.fwidth = fw;
 233                         data.fheight = fh;
 234                 } else if ( 'restore' === action ) {
 235                         data['do'] = 'restore';
 236                 } else {
 237                         return false;
 238                 }
 239
 240                 t.toggleEditor(postid, 1);
 241                 $.post(ajaxurl, data, function(r) {
 242                         $('#image-editor-' + postid).empty().append(r);
 243                         t.toggleEditor(postid, 0);
 244                 });
 245         },
 246
 247         save : function(postid, nonce) {
 248                 var data, target = this.getTarget(postid), history = this.filterHistory(postid, 0);
 249
 250                 if ( '' === history ) {
 251                         return false;
 252                 }
 253
 254                 this.toggleEditor(postid, 1);
 255                 data = {
 256                         'action': 'image-editor',
 257                         '_ajax_nonce': nonce,
 258                         'postid': postid,
 259                         'history': history,
 260                         'target': target,
 261                         'context': $('#image-edit-context').length ? $('#image-edit-context').val() : null,
 262                         'do': 'save'
 263                 };
 264
 265                 $.post(ajaxurl, data, function(r) {
 266                         var ret = JSON.parse(r);
 267
 268                         if ( ret.error ) {
 269                                 $('#imgedit-response-' + postid).html('<div class="error"><p>' + ret.error + '</p><div>');
 270                                 imageEdit.close(postid);
 271                                 return;
 272                         }
 273
 274                         if ( ret.fw && ret.fh ) {
 275                                 $('#media-dims-' + postid).html( ret.fw + ' &times; ' + ret.fh );
 276                         }
 277
 278                         if ( ret.thumbnail ) {
 279                                 $('.thumbnail', '#thumbnail-head-' + postid).attr('src', ''+ret.thumbnail);
 280                         }
 281
 282                         if ( ret.msg ) {
 283                                 $('#imgedit-response-' + postid).html('<div class="updated"><p>' + ret.msg + '</p></div>');
 284                         }
 285
 286                         imageEdit.close(postid);
 287                 });
 288         },
 289
 290         open : function(postid, nonce) {
 291                 var data, elem = $('#image-editor-' + postid), head = $('#media-head-' + postid),
 292                         btn = $('#imgedit-open-btn-' + postid), spin = btn.siblings('.spinner');
 293
 294                 btn.prop('disabled', true);
 295                 spin.show();
 296
 297                 data = {
 298                         'action': 'image-editor',
 299                         '_ajax_nonce': nonce,
 300                         'postid': postid,
 301                         'do': 'open'
 302                 };
 303
 304                 elem.load(ajaxurl, data, function() {
 305                         elem.fadeIn('fast');
 306                         head.fadeOut('fast', function(){
 307                                 btn.removeAttr('disabled');
 308                                 spin.hide();
 309                         });
 310                 });
 311         },
 312
 313         imgLoaded : function(postid) {
 314                 var img = $('#image-preview-' + postid), parent = $('#imgedit-crop-' + postid);
 315
 316                 this.initCrop(postid, img, parent);
 317                 this.setCropSelection(postid, 0);
 318                 this.toggleEditor(postid, 0);
 319         },
 320
 321         initCrop : function(postid, image, parent) {
 322                 var t = this, selW = $('#imgedit-sel-width-' + postid),
 323                         selH = $('#imgedit-sel-height-' + postid);
 324
 325                 t.iasapi = $(image).imgAreaSelect({
 326                         parent: parent,
 327                         instance: true,
 328                         handles: true,
 329                         keys: true,
 330                         minWidth: 3,
 331                         minHeight: 3,
 332
 333                         onInit: function() {
 334                                 parent.children().mousedown(function(e){
 335                                         var ratio = false, sel, defRatio;
 336
 337                                         if ( e.shiftKey ) {
 338                                                 sel = t.iasapi.getSelection();
 339                                                 defRatio = t.getSelRatio(postid);
 340                                                 ratio = ( sel && sel.width && sel.height ) ? sel.width + ':' + sel.height : defRatio;
 341                                         }
 342
 343                                         t.iasapi.setOptions({
 344                                                 aspectRatio: ratio
 345                                         });
 346                                 });
 347                         },
 348
 349                         onSelectStart: function() {
 350                                 imageEdit.setDisabled($('#imgedit-crop-sel-' + postid), 1);
 351                         },
 352
 353                         onSelectEnd: function(img, c) {
 354                                 imageEdit.setCropSelection(postid, c);
 355                         },
 356
 357                         onSelectChange: function(img, c) {
 358                                 var sizer = imageEdit.hold.sizer;
 359                                 selW.val( imageEdit.round(c.width / sizer) );
 360                                 selH.val( imageEdit.round(c.height / sizer) );
 361                         }
 362                 });
 363         },
 364
 365         setCropSelection : function(postid, c) {
 366                 var sel, min = $('#imgedit-minthumb-' + postid).val() || '128:128',
 367                         sizer = this.hold.sizer;
 368                         min = min.split(':');
 369                         c = c || 0;
 370
 371                 if ( !c || ( c.width < 3 && c.height < 3 ) ) {
 372                         this.setDisabled($('.imgedit-crop', '#imgedit-panel-' + postid), 0);
 373                         this.setDisabled($('#imgedit-crop-sel-' + postid), 0);
 374                         $('#imgedit-sel-width-' + postid).val('');
 375                         $('#imgedit-sel-height-' + postid).val('');
 376                         $('#imgedit-selection-' + postid).val('');
 377                         return false;
 378                 }
 379
 380                 if ( c.width < (min[0] * sizer) && c.height < (min[1] * sizer) ) {
 381                         this.setDisabled($('.imgedit-crop', '#imgedit-panel-' + postid), 0);
 382                         $('#imgedit-selection-' + postid).val('');
 383                         return false;
 384                 }
 385
 386                 sel = { 'x': c.x1, 'y': c.y1, 'w': c.width, 'h': c.height };
 387                 this.setDisabled($('.imgedit-crop', '#imgedit-panel-' + postid), 1);
 388                 $('#imgedit-selection-' + postid).val( JSON.stringify(sel) );
 389         },
 390
 391         close : function(postid, warn) {
 392                 warn = warn || false;
 393
 394                 if ( warn && this.notsaved(postid) ) {
 395                         return false;
 396                 }
 397
 398                 this.iasapi = {};
 399                 this.hold = {};
 400                 $('#image-editor-' + postid).fadeOut('fast', function() {
 401                         $('#media-head-' + postid).fadeIn('fast');
 402                         $(this).empty();
 403                 });
 404         },
 405
 406         notsaved : function(postid) {
 407                 var h = $('#imgedit-history-' + postid).val(),
 408                         history = ( h !== '' ) ? JSON.parse(h) : [],
 409                         pop = this.intval( $('#imgedit-undone-' + postid).val() );
 410
 411                 if ( pop < history.length ) {
 412                         if ( confirm( $('#imgedit-leaving-' + postid).html() ) ) {
 413                                 return false;
 414                         }
 415                         return true;
 416                 }
 417                 return false;
 418         },
 419
 420         addStep : function(op, postid, nonce) {
 421                 var t = this, elem = $('#imgedit-history-' + postid),
 422                 history = ( elem.val() !== '' ) ? JSON.parse( elem.val() ) : [],
 423                 undone = $('#imgedit-undone-' + postid),
 424                 pop = t.intval(undone.val());
 425
 426                 while ( pop > 0 ) {
 427                         history.pop();
 428                         pop--;
 429                 }
 430                 undone.val(0); // reset
 431
 432                 history.push(op);
 433                 elem.val( JSON.stringify(history) );
 434
 435                 t.refreshEditor(postid, nonce, function() {
 436                         t.setDisabled($('#image-undo-' + postid), true);
 437                         t.setDisabled($('#image-redo-' + postid), false);
 438                 });
 439         },
 440
 441         rotate : function(angle, postid, nonce, t) {
 442                 if ( $(t).hasClass('disabled') ) {
 443                         return false;
 444                 }
 445
 446                 this.addStep({ 'r': { 'r': angle, 'fw': this.hold.h, 'fh': this.hold.w }}, postid, nonce);
 447         },
 448
 449         flip : function (axis, postid, nonce, t) {
 450                 if ( $(t).hasClass('disabled') ) {
 451                         return false;
 452                 }
 453
 454                 this.addStep({ 'f': { 'f': axis, 'fw': this.hold.w, 'fh': this.hold.h }}, postid, nonce);
 455         },
 456
 457         crop : function (postid, nonce, t) {
 458                 var sel = $('#imgedit-selection-' + postid).val(),
 459                         w = this.intval( $('#imgedit-sel-width-' + postid).val() ),
 460                         h = this.intval( $('#imgedit-sel-height-' + postid).val() );
 461
 462                 if ( $(t).hasClass('disabled') || sel === '' ) {
 463                         return false;
 464                 }
 465
 466                 sel = JSON.parse(sel);
 467                 if ( sel.w > 0 && sel.h > 0 && w > 0 && h > 0 ) {
 468                         sel.fw = w;
 469                         sel.fh = h;
 470                         this.addStep({ 'c': sel }, postid, nonce);
 471                 }
 472         },
 473
 474         undo : function (postid, nonce) {
 475                 var t = this, button = $('#image-undo-' + postid), elem = $('#imgedit-undone-' + postid),
 476                         pop = t.intval( elem.val() ) + 1;
 477
 478                 if ( button.hasClass('disabled') ) {
 479                         return;
 480                 }
 481
 482                 elem.val(pop);
 483                 t.refreshEditor(postid, nonce, function() {
 484                         var elem = $('#imgedit-history-' + postid),
 485                         history = ( elem.val() !== '' ) ? JSON.parse( elem.val() ) : [];
 486
 487                         t.setDisabled($('#image-redo-' + postid), true);
 488                         t.setDisabled(button, pop < history.length);
 489                 });
 490         },
 491
 492         redo : function(postid, nonce) {
 493                 var t = this, button = $('#image-redo-' + postid), elem = $('#imgedit-undone-' + postid),
 494                         pop = t.intval( elem.val() ) - 1;
 495
 496                 if ( button.hasClass('disabled') ) {
 497                         return;
 498                 }
 499
 500                 elem.val(pop);
 501                 t.refreshEditor(postid, nonce, function() {
 502                         t.setDisabled($('#image-undo-' + postid), true);
 503                         t.setDisabled(button, pop > 0);
 504                 });
 505         },
 506
 507         setNumSelection : function(postid) {
 508                 var sel, elX = $('#imgedit-sel-width-' + postid), elY = $('#imgedit-sel-height-' + postid),
 509                         x = this.intval( elX.val() ), y = this.intval( elY.val() ),
 510                         img = $('#image-preview-' + postid), imgh = img.height(), imgw = img.width(),
 511                         sizer = this.hold.sizer, x1, y1, x2, y2, ias = this.iasapi;
 512
 513                 if ( x < 1 ) {
 514                         elX.val('');
 515                         return false;
 516                 }
 517
 518                 if ( y < 1 ) {
 519                         elY.val('');
 520                         return false;
 521                 }
 522
 523                 if ( x && y && ( sel = ias.getSelection() ) ) {
 524                         x2 = sel.x1 + Math.round( x * sizer );
 525                         y2 = sel.y1 + Math.round( y * sizer );
 526                         x1 = sel.x1;
 527                         y1 = sel.y1;
 528
 529                         if ( x2 > imgw ) {
 530                                 x1 = 0;
 531                                 x2 = imgw;
 532                                 elX.val( Math.round( x2 / sizer ) );
 533                         }
 534
 535                         if ( y2 > imgh ) {
 536                                 y1 = 0;
 537                                 y2 = imgh;
 538                                 elY.val( Math.round( y2 / sizer ) );
 539                         }
 540
 541                         ias.setSelection( x1, y1, x2, y2 );
 542                         ias.update();
 543                         this.setCropSelection(postid, ias.getSelection());
 544                 }
 545         },
 546
 547         round : function(num) {
 548                 var s;
 549                 num = Math.round(num);
 550
 551                 if ( this.hold.sizer > 0.6 ) {
 552                         return num;
 553                 }
 554
 555                 s = num.toString().slice(-1);
 556
 557                 if ( '1' === s ) {
 558                         return num - 1;
 559                 } else if ( '9' === s ) {
 560                         return num + 1;
 561                 }
 562
 563                 return num;
 564         },
 565
 566         setRatioSelection : function(postid, n, el) {
 567                 var sel, r, x = this.intval( $('#imgedit-crop-width-' + postid).val() ),
 568                         y = this.intval( $('#imgedit-crop-height-' + postid).val() ),
 569                         h = $('#image-preview-' + postid).height();
 570
 571                 if ( !this.intval( $(el).val() ) ) {
 572                         $(el).val('');
 573                         return;
 574                 }
 575
 576                 if ( x && y ) {
 577                         this.iasapi.setOptions({
 578                                 aspectRatio: x + ':' + y
 579                         });
 580
 581                         if ( sel = this.iasapi.getSelection(true) ) {
 582                                 r = Math.ceil( sel.y1 + ( ( sel.x2 - sel.x1 ) / ( x / y ) ) );
 583
 584                                 if ( r > h ) {
 585                                         r = h;
 586                                         if ( n ) {
 587                                                 $('#imgedit-crop-height-' + postid).val('');
 588                                         } else {
 589                                                 $('#imgedit-crop-width-' + postid).val('');
 590                                         }
 591                                 }
 592
 593                                 this.iasapi.setSelection( sel.x1, sel.y1, sel.x2, r );
 594                                 this.iasapi.update();
 595                         }
 596                 }
 597         }
 598 };
 599 })(jQuery);