skins/photo_film_viewer.js

   1 /*
   2 copyright 2008-2014 Benoit Pin - Centre de recherche en informatique - MINES ParisTech
   3 http://plinn.org
   4 Licence Creative Commons http://creativecommons.org/licenses/by-nc/2.0/
   5 */
   6
   7 var FilmSlider;
   8
   9 (function(){
  10
  11 var keyLeft = 37, keyRight = 39;
  12 var isTextMime = /^text\/.+/i;
  13 var isAddToSelection = /.*\/add_to_selection$/;
  14 var imgRequestedSize = /size=(\d+)/;
  15 var DEFAULT_IMAGE_SIZES = [500, 600, 800];
  16
  17 FilmSlider = function(filmBar, slider, ctxInfos, image, toolbar, breadcrumbs) {
  18         var thisSlider = this;
  19         this.filmBar = filmBar;
  20         this.filmBarWidth = getObjectWidth(this.filmBar);
  21         var film = filmBar.firstChild;
  22         if (film.nodeType === 3) { film = film.nextSibling; }
  23         this.film = film;
  24         this.slider = slider;
  25         this.rail = slider.parentNode;
  26         this.sliderSpeedRatio = undefined;
  27         this.sliderRatio = undefined;
  28         this.selectedSlide = undefined;
  29         this.selectedSlideInSelection = undefined;
  30         this.cartSlide = document.getElementById('cart_slide');
  31         this.image = image;
  32         this.stretchable = image.parentNode;
  33         this.viewMode = 'medium';
  34
  35         this.buttons = [];
  36         this.toolbar = toolbar;
  37         if (breadcrumbs) {
  38                 var bcElements = breadcrumbs.getElementsByTagName('a');
  39                 this.lastBCElement = bcElements[bcElements.length-1];
  40                 var imgSrcParts = image.src.split('/');
  41                 this.lastBCElement.innerHTML = imgSrcParts[imgSrcParts.length-2];
  42                 this.hasBreadcrumbs = true;
  43         }
  44         else {
  45                 this.hasBreadcrumbs = false;
  46         }
  47
  48         var buttons = toolbar.getElementsByTagName('img');
  49         var b, name, i;
  50         for (i=0 ; i<buttons.length ; i++) {
  51                 b = buttons[i];
  52                 name = b.getAttribute('name');
  53                 if (name) { this.buttons[name] = b; }
  54         }
  55
  56         this.pendingImage = new Image();
  57         this.pendingImage.onload = function() {
  58                 thisSlider.refreshImage();
  59         };
  60         this.initialized = false;
  61
  62         this.film.style.left='0';
  63         this.film.style.top='0';
  64
  65         this.filmLength = ctxInfos.filmLength;
  66         this.center = ctxInfos.center;
  67         this.slideSize = ctxInfos.slideSize;
  68         this.ctxUrlTranslation = ctxInfos.ctxUrlTranslation;
  69
  70         this.ddHandlers = {'down' : function(evt){thisSlider.mouseDownHandler(evt);},
  71                                            'move' : function(evt){thisSlider.mouseMoveHandler(evt);},
  72                                            'up' :       function(evt){thisSlider.mouseUpHandler(evt);},
  73                                            'out' :      function(evt){thisSlider.mouseOutHandler(evt);}
  74                                           };
  75
  76         if (browser.isMobile) {
  77                 this.rail.className = 'hidden';
  78         }
  79         else {
  80                 this.resizeSlider();
  81         }
  82         this.addEventListeners();
  83 };
  84
  85 if (!browser.isMobile) {
  86 FilmSlider.prototype.resizeSlider = function(evt) {
  87         var filmBarWidth = this.filmBarWidth;
  88         if (!filmBarWidth) { return; }
  89         var filmWidth = this.slideSize * this.filmLength;
  90         var sliderRatio = this.sliderRatio =  filmBarWidth / filmWidth;
  91         var sliderWidth = filmBarWidth * sliderRatio;
  92         this.rail.style.width = filmBarWidth + 'px';
  93         this.rail.style.display = 'block';
  94         this.rail.style.visibility = 'visible';
  95         if (sliderRatio < 1) {
  96                 this.slider.style.width = Math.round(sliderWidth) + 'px';
  97                 this.slider.style.visibility = 'visible';
  98         }
  99         else {
 100                 this.slider.style.visibility = 'hidden';
 101         }
 102
 103         this.winSize = {'width'  : getWindowWidth(),
 104                                         'height' : getWindowHeight()};
 105         this.maxRightPosition = filmBarWidth - sliderWidth;
 106         this.sliderSpeedRatio = - (filmBarWidth - sliderWidth) / (filmWidth - filmBarWidth);
 107         if (!this.initialized) {
 108                 this.centerSlide(this.center);
 109                 this.selectedSlide = this.filmBar.getElementsByTagName('img')[this.center].parentNode;
 110                 this.initialized = true;
 111         }
 112 };
 113 }
 114
 115 else {
 116         FilmSlider.prototype.resizeSlider = function(evt) {};
 117 }
 118
 119 FilmSlider.prototype._checkSizeAfterLoad = function(evt) {
 120         this._barSizes = [];
 121         this.filmBarWidth = this._barSizes[this._barSizes.length] = getObjectWidth(this.filmBar);
 122         this.resizeSlider();
 123         var self = this;
 124         this._checkSizeIntervalId = setInterval(function(evt){self._checkSize(evt);}, 25);
 125         setTimeout(function(evt){self._checkSizeStability();}, 250);
 126 };
 127
 128 FilmSlider.prototype._checkSize = function(evt) {
 129         this._barSizes[this._barSizes.length] = getObjectWidth(this.filmBar);
 130         if (this._barSizes.length >= 2 &&
 131                 this._barSizes[this._barSizes.length-2] !== this._barSizes[this._barSizes.length-1]) {
 132                 this.filmBarWidth = this._barSizes[this._barSizes.length-1];
 133                 this.initialized = false;
 134                 this.resizeSlider();
 135         }
 136 };
 137
 138 FilmSlider.prototype._checkSizeStability = function(evt) {
 139         var self = this;
 140         var i;
 141         for (i=0 ; i<this._barSizes.length - 1 ; i++) {
 142                 if (this._barSizes[i] !== this._barSizes[i+1]) {
 143                         this._barSizes = [];
 144                         setTimeout(function(evt){self._checkSizeStability();}, 250);
 145                         return;
 146                 }
 147         }
 148         clearInterval(this._checkSizeIntervalId);
 149         delete this._barSizes;
 150         delete this._checkSizeIntervalId;
 151 };
 152
 153 FilmSlider.prototype.fitToScreen = function(evt) {
 154         this._fitToScreen();
 155         var thisSlider = this;
 156         addListener(window, 'resize', function(evt){thisSlider._fitToScreen();});
 157 };
 158
 159 FilmSlider.prototype._fitToScreen = function(evt) {
 160         var wh = getWindowHeight();
 161         var rb = getObjectTop(this.rail) + getObjectHeight(this.rail); // rail bottom
 162         var delta = wh - rb;
 163         var sh = getObjectHeight(this.stretchable);
 164         var newSize = sh + delta;
 165         this.stretchable.style.height = newSize + 'px';
 166
 167         var ratio = this.image.height / this.image.width;
 168         var bestFitSize = this.getBestFitSize(ratio);
 169         var currentSize = parseInt(imgRequestedSize.exec(this.image.src)[1], 10);
 170         if (currentSize !== bestFitSize) {
 171                 var src = this.image.src.replace(imgRequestedSize, 'size=' + bestFitSize);
 172                 this.pendingImage.src = src;
 173         }
 174 };
 175
 176 FilmSlider.prototype.getBestFitSize = function(ratio) {
 177         var fw = getObjectWidth(this.stretchable) - 1;
 178         var fh = getObjectHeight(this.stretchable) - 1;
 179
 180         var i, irw, irh;
 181         if (ratio < 1) {
 182                 for (i=DEFAULT_IMAGE_SIZES.length -1 ; i>0 ; i--) {
 183                         irw = DEFAULT_IMAGE_SIZES[i];
 184                         irh = irw * ratio;
 185                         if (irw <= fw && irh <= fh) { break; }
 186                 }
 187         }
 188         else {
 189                 for (i=DEFAULT_IMAGE_SIZES.length -1 ; i>0 ; i--) {
 190                         irh = DEFAULT_IMAGE_SIZES[i];
 191                         irw = irh / ratio;
 192                         if (irw <= fw && irh <= fh) { break; }
 193                 }
 194         }
 195         return DEFAULT_IMAGE_SIZES[i];
 196 };
 197
 198 FilmSlider.prototype.centerSlide = function(slideIndex) {
 199         if (this.sliderRatio > 1) { return; }
 200         var filmBarWidth = getObjectWidth(this.filmBar);
 201         var x = slideIndex * this.slideSize;
 202         x = x - (filmBarWidth - this.slideSize) / 2.0;
 203         x = x * this.sliderSpeedRatio;
 204         var p = new Point( -x, 0 );
 205         this.setSliderPosition(p);
 206 };
 207
 208 FilmSlider.prototype.setSliderPosition = function(point) {
 209         if(point.x < 0) { point.x = 0; }
 210         if (point.x > this.maxRightPosition) { point.x = this.maxRightPosition; }
 211         this.slider.style.left = point.x + 'px';
 212         this.setFilmPosition(point);
 213 };
 214
 215 FilmSlider.prototype.setFilmPosition = function(point) {
 216         this.film.style.left = point.x / this.sliderSpeedRatio + 'px';
 217 };
 218
 219 FilmSlider.prototype.getSliderPosition = function() {
 220         var x = parseInt(this.slider.style.left, 10);
 221         var y = parseInt(this.slider.style.top, 10);
 222         var p = new Point(x, y);
 223         return p;
 224 };
 225
 226 FilmSlider.prototype.getFilmPosition = function() {
 227         var x = parseInt(this.film.style.left, 10);
 228         var y = parseInt(this.film.style.top, 10);
 229         var p = new Point(x, y);
 230         return p;
 231 };
 232
 233 FilmSlider.prototype.loadSibling = function(previous) {
 234         var slide = null;
 235         if (previous) {
 236                 slide = this.selectedSlide.parentNode.previousSibling;
 237                 if (slide && slide.nodeType===3) { slide = slide.previousSibling; }
 238         }
 239         else {
 240                 slide = this.selectedSlide.parentNode.nextSibling;
 241                 if (slide && slide.nodeType===3) { slide = slide.nextSibling; }
 242         }
 243
 244         if (!slide) { return; }
 245         else {
 246                 var target = slide.getElementsByTagName('a')[0];
 247                 raiseMouseEvent(target, 'click');
 248                 var index = parseInt(target.getAttribute('portfolio:position'), 10);
 249                 this.centerSlide(index);
 250         }
 251 };
 252
 253 FilmSlider.prototype.addEventListeners = function() {
 254         var thisSlider = this;
 255         addListener(window, 'resize', function(evt){thisSlider.resizeSlider(evt);});
 256         addListener(this.filmBar, 'click', function(evt){thisSlider.thumbnailClickHandler(evt);});
 257         addListener(this.toolbar, 'click', function(evt){thisSlider.toolbarClickHandler(evt);});
 258         addListener(window, 'load', function(evt){thisSlider.fitToScreen(evt);});
 259         addListener(window, 'load', function(evt){thisSlider._checkSizeAfterLoad(evt);});
 260
 261         // dd listeners
 262         addListener(this.slider, 'mousedown', this.ddHandlers.down);
 263         if(browser.isDOM2Event){
 264                 if (browser.isAppleWebKit) {
 265                         this.filmBar.addEventListener('mousewheel', function(evt){thisSlider.mouseWheelHandler(evt);}, false);
 266                 }
 267                 else {
 268                         addListener(this.filmBar, 'DOMMouseScroll', function(evt){thisSlider.mouseWheelHandler(evt);});
 269                 }
 270         }
 271         else if (browser.isIE6up) {
 272                 addListener(this.filmBar, 'mousewheel', function(evt){thisSlider.mouseWheelHandler(evt);});
 273         }
 274         if (browser.isMobile) {
 275                 this.filmBar.addEventListener('touchstart', function(evt){thisSlider.touchStartHandler(evt);}, false);
 276                 this.filmBar.addEventListener('touchmove', function(evt){thisSlider.touchMoveHandler(evt);}, false);
 277                 this.filmBar.addEventListener('touchend', function(evt){thisSlider.touchEndHandler(evt);}, false);
 278         }
 279
 280         addListener(document, 'keydown', function(evt){thisSlider.keyDownHandler(evt);});
 281         addListener(document, 'keypress', function(evt){thisSlider.keyPressHandler(evt);});
 282 };
 283
 284
 285 FilmSlider.prototype.mouseDownHandler = function(evt) {
 286         this.initialClickPoint = new Point(evt.clientX, evt.clientY);
 287         this.initialPosition = this.getSliderPosition();
 288         this.dragInProgress = true;
 289         addListener(document, 'mousemove', this.ddHandlers.move);
 290         addListener(document, 'mouseup', this.ddHandlers.up);
 291         addListener(document.body, 'mouseout', this.ddHandlers.out);
 292 };
 293
 294
 295 FilmSlider.prototype.mouseMoveHandler = function(evt) {
 296         if(!this.dragInProgress) { return; }
 297
 298         clearSelection();
 299         evt = getEventObject(evt);
 300         var currentPoint = new Point(evt.clientX, evt.clientY);
 301         var displacement = currentPoint.diff(this.initialClickPoint);
 302         this.setSliderPosition(this.initialPosition.add(displacement));
 303 };
 304
 305 FilmSlider.prototype.mouseUpHandler = function(evt) {
 306         this.dragInProgress = false;
 307         evt = getEventObject(evt);
 308         this.mouseMoveHandler(evt);
 309 };
 310
 311
 312 FilmSlider.prototype.mouseOutHandler = function(evt) {
 313         evt = getEventObject(evt);
 314         var x = evt.clientX;
 315         var y = evt.clientY;
 316         if (x < 0 ||
 317                 x > this.winSize.width ||
 318                 y < 0 ||
 319                 y > this.winSize.height
 320                 ) {
 321                 this.mouseUpHandler(evt);
 322         }
 323 };
 324
 325 FilmSlider.prototype.thumbnailClickHandler = function(evt) {
 326         var target = getTargetedObject(evt);
 327         while (target.tagName !== 'A' && target !== this.filmBar) { target = target.parentNode; }
 328         if (target.tagName !== 'A') { return; }
 329         else {
 330                 if (this.viewMode === 'full') {
 331                         this.mosaique.unload();
 332                         this.mosaique = null;
 333                         this.viewMode = 'medium';
 334                 }
 335                 disableDefault(evt);
 336                 disablePropagation(evt);
 337                 target.blur();
 338                 history.pushState(target.href, '', target.href);
 339
 340                 var imgBaseUrl = target.href;
 341                 var canonicalImgUrl;
 342                 if (this.ctxUrlTranslation[0]) {
 343                         canonicalImgUrl = imgBaseUrl.replace(this.ctxUrlTranslation[0],
 344                                                                                                  this.ctxUrlTranslation[1]);
 345                 }
 346                 else { canonicalImgUrl = imgBaseUrl; }
 347
 348                 var ajaxUrl = imgBaseUrl + '/photo_view_ajax';
 349                 var thisFS = this;
 350
 351                 //this.pendingImage.src = canonicalImgUrl + '/getResizedImage?size=600';
 352                 var thumbnail = target.getElementsByTagName('IMG')[0];
 353                 var bestFitSize = this.getBestFitSize(thumbnail.height/thumbnail.width);
 354                 this.pendingImage.src = canonicalImgUrl + '/getResizedImage?size=' + bestFitSize;
 355
 356                 // update buttons
 357                 var fullScreenLink = this.buttons.full_screen.parentNode;
 358                 fullScreenLink.href = canonicalImgUrl + '/zoom_view';
 359
 360                 var toggleSelectionBtn = this.buttons.toggle_selection;
 361                 var toggleSelectionLink = toggleSelectionBtn.parentNode;
 362                 this.selectedSlideInSelection = (target.className==='selected');
 363                 if (this.selectedSlideInSelection) {
 364                         toggleSelectionBtn.src = portal_url() + '/unselect_flag_btn.gif';
 365                         toggleSelectionBtn.alt = toggleSelectionLink.title = 'Retirer de la sélection';
 366                         toggleSelectionLink.href = canonicalImgUrl + '/remove_to_selection';
 367                 }
 368                 else {
 369                         toggleSelectionBtn.src = portal_url() + '/select_flag_btn.gif';
 370                         toggleSelectionBtn.alt = toggleSelectionLink.title = 'Ajouter à la sélection';
 371                         toggleSelectionLink.href = canonicalImgUrl + '/add_to_selection';
 372                 }
 373
 374                 var showBuyableButtonLink = this.buttons.show_buyable.parentNode;
 375                 showBuyableButtonLink.href = canonicalImgUrl + '/get_slide_buyable_items';
 376                 this.cartSlide.innerHTML = '';
 377                 this.cartSlide.style.visibility='hidden';
 378
 379
 380                 var metadataButton = this.buttons.edit_metadata;
 381                 if (metadataButton) {
 382                         var metadataEditLink = metadataButton.parentNode;
 383                         metadataEditLink.href = canonicalImgUrl + '/photo_edit_form';
 384                 }
 385
 386
 387                 var req = new XMLHttpRequest();
 388                 req.onreadystatechange = function() {
 389                         switch (req.readyState) {
 390                                 case 1 :
 391                                         showProgressImage();
 392                                         break;
 393                                 case 2 :
 394                                         try {
 395                                                 if (! isTextMime.exec(req.getResponseHeader('Content-Type'))) {
 396                                                         req.onreadystatechange = null;
 397                                                         req.abort();
 398                                                         hideProgressImage();
 399                                                         window.location.href = thisFS._fallBackUrl;
 400                                                 }
 401                                         }
 402                                         catch(e){}
 403                                         break;
 404                                 case 4 :
 405                                         hideProgressImage();
 406                                         if (req.status === 200) { thisFS.populateViewer(req); }
 407                                         break;
 408                         }
 409                 };
 410
 411                 req.open("GET", ajaxUrl, true);
 412                 req.send(null);
 413
 414                 // update old displayed slide className
 415                 var className = this.selectedSlide.className;
 416                 var classes = className.split(' ');
 417                 var newClasses = [];
 418                 var name, i;
 419
 420                 for (i=0 ; i<classes.length ;  i++) {
 421                         name = classes[i];
 422                         if (name !== 'displayed') {
 423                                 newClasses.push(name);
 424                         }
 425                 }
 426
 427                 this.selectedSlide.className = newClasses.join(' ');
 428
 429                 // hightlight new displayed slide
 430                 this.selectedSlide = target;
 431                 className = this.selectedSlide.className;
 432                 classes = className.split(' ');
 433                 classes.push('displayed');
 434                 this.selectedSlide.className = classes.join(' ');
 435         }
 436 };
 437
 438 FilmSlider.prototype.toolbarClickHandler = function(evt) {
 439         var target = getTargetedObject(evt);
 440         var button, link, url;
 441         if(target.tagName === 'IMG' && target.getAttribute('name')) {
 442                 switch(target.getAttribute('name')) {
 443                         case 'previous' :
 444                                 disableDefault(evt);
 445                                 disablePropagation(evt);
 446                                 button = target;
 447                                 link = button.parentNode;
 448                                 link.blur();
 449                                 this.loadSibling(true);
 450                                 break;
 451                         case 'next' :
 452                                 disableDefault(evt);
 453                                 disablePropagation(evt);
 454                                 button = target;
 455                                 link = button.parentNode;
 456                                 link.blur();
 457                                 this.loadSibling(false);
 458                                 break;
 459                         case 'full_screen':
 460                                 disableDefault(evt);
 461                                 disablePropagation(evt);
 462                                 target.parentNode.blur();
 463                                 if (this.viewMode === 'full') {
 464                                         this.mosaique.unload();
 465                                         this.mosaique = null;
 466                                         this.viewMode = 'medium';
 467                                         return;
 468                                 }
 469                                 var main = document.getElementById('photo_viewer');
 470                                 url = target.parentNode.href;
 471                                 url = url.substring(0, url.length - '/zoom_view'.length);
 472                                 var margins = {'top':0, 'right':-1, 'bottom':0, 'left':0};
 473                                 this.mosaique = new Mosaique(main, url, margins);
 474                                 this.viewMode = 'full';
 475                                 break;
 476
 477                         case 'toggle_selection':
 478                                 disableDefault(evt);
 479                                 disablePropagation(evt);
 480                                 button = target;
 481                                 link = button.parentNode;
 482                                 link.blur();
 483
 484                                 var req = new XMLHttpRequest();
 485                                 url = link.href;
 486                                 req.open("POST", url, true);
 487                                 req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 488                                 req.send("ajax=1");
 489
 490                                 // toggle button
 491                                 var parts = url.split('/');
 492                                 var canonicalImgUrl = parts.slice(0, parts.length-1).join('/');
 493
 494                                 if (isAddToSelection.test(url)) {
 495                                         button.src = portal_url() + '/unselect_flag_btn.gif';
 496                                         button.alt = link.title = 'Retirer de la sélection';
 497                                         link.href = canonicalImgUrl + '/remove_to_selection';
 498                                         this.selectedSlide.className = 'selected displayed';
 499                                         this.image.parentNode.className = 'selected';
 500                                         this.selectedSlideInSelection = true;
 501                                 }
 502                                 else {
 503                                         button.src = portal_url() + '/select_flag_btn.gif';
 504                                         button.alt = link.title = 'Ajouter à la sélection';
 505                                         link.href = canonicalImgUrl + '/add_to_selection';
 506                                         this.selectedSlide.className = 'displayed';
 507                                         this.image.parentNode.className = '';
 508                                         this.selectedSlideInSelection = false;
 509                                 }
 510                                 break;
 511
 512                         case 'show_buyable':
 513                                 disableDefault(evt);
 514                                 disablePropagation(evt);
 515                                 button = target;
 516                                 link = button.parentNode;
 517                                 link.blur();
 518                                 var slide = this.cartSlide;
 519                                 slide.innerHTML = '';
 520                                 slide.style.visibility = 'visible';
 521                                 var cw = new CartWidget(slide, link.href);
 522                                 cw.onCancel = function() {
 523                                         CartWidget.prototype.onCancel.apply(this);
 524                                         slide.style.visibility = 'hidden';
 525                                 };
 526                                 cw.onAfterConfirm = function() {
 527                                         slide.style.visibility = 'hidden';
 528                                 };
 529                                 break;
 530
 531
 532
 533
 534                         /*
 535                         case 'edit_metadata' :
 536                                 disableDefault(evt);
 537                                 disablePropagation(evt);
 538                                 target.blur();
 539                                 if (this.viewMode === 'full') {
 540                                         this.mosaique.unload();
 541                                         this.mosaique = null;
 542                                         this.viewMode = 'medium';
 543                                         return;
 544                                 }
 545                                 var fi = new FragmentImporter(absolute_url());
 546                                 fi.useMacro('metadata_edit_form_macros', 'iptc', 'image_metadata');
 547                                 break;
 548                         */
 549                 }
 550         }
 551 };
 552
 553
 554 if(browser.isDOM2Event) {
 555         if (browser.isAppleWebKit) {
 556                 FilmSlider.prototype.mouseWheelHandler = function(evt) {
 557                         disableDefault(evt);
 558                         var pos = this.getSliderPosition();
 559                         pos.x -= evt.wheelDelta / 40;
 560                         this.setSliderPosition(pos);
 561                 };
 562         }
 563         else {
 564                 FilmSlider.prototype.mouseWheelHandler = function(evt) {
 565                         disableDefault(evt);
 566                         var pos = this.getSliderPosition();
 567                         pos.x += evt.detail * 3;
 568                         this.setSliderPosition(pos);
 569                 };
 570         }
 571 }
 572 else if (browser.isIE6up) {
 573         FilmSlider.prototype.mouseWheelHandler = function() {
 574                 var evt = window.event;
 575                 evt.returnValue = false;
 576                 var pos = this.getSliderPosition();
 577                 pos.x -= evt.wheelDelta / 40;
 578                 this.setSliderPosition(pos);
 579         };
 580 }
 581
 582 FilmSlider.prototype.touchStartHandler = function(evt) {
 583         this.filmStartX = parseInt(this.film.style.left, 10);
 584         this.touchStartX = evt.pageX;
 585 };
 586
 587 FilmSlider.prototype.touchMoveHandler = function(evt) {
 588         var delta = this.touchStartX - evt.pageX;
 589         this.film.style.left = String(this.filmStartX - delta) + 'px';
 590 };
 591
 592 FilmSlider.prototype.touchEndHandler = function(evt) {
 593         this.touchStartX = undefined;
 594 };
 595
 596
 597 FilmSlider.prototype.keyDownHandler = function(evt) {
 598         evt = getEventObject(evt);
 599         switch (evt.keyCode) {
 600                 case keyLeft :
 601                         this.loadSibling(true);
 602                         break;
 603                 case keyRight :
 604                         this.loadSibling(false);
 605                         break;
 606                 default:
 607                         return;
 608         }
 609 };
 610
 611
 612 FilmSlider.prototype.keyPressHandler = function(evt) {
 613         var target = getTargetedObject(evt);
 614         if (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA') { return; }
 615         evt = getEventObject(evt);
 616         var charPress = String.fromCharCode((evt.keyCode) ? evt.keyCode : evt.which);
 617         switch(charPress) {
 618                 case 'f':
 619                 case 'F':
 620                         raiseMouseEvent(this.buttons.full_screen, 'click');
 621                         break;
 622         }
 623 };
 624
 625 FilmSlider.prototype.populateViewer = function(req) {
 626         var elements = req.responseXML.documentElement.childNodes;
 627         var i;
 628         for(i=0 ; i < elements.length ; i++ ) {
 629                 element = elements[i];
 630                 switch (element.nodeName) {
 631                         case 'fragment' :
 632                                 var dest = document.getElementById(element.getAttribute('id'));
 633                                 if (dest) { dest.innerHTML = element.firstChild.nodeValue; }
 634                                 break;
 635                         case 'imageattributes' :
 636                                 var link = this.buttons.back_to_portfolio.parentNode;
 637                                 link.href = element.getAttribute('back_to_context_url');
 638                                 link = this.buttons.show_buyable.parentNode;
 639                                 var buyable = element.getAttribute('buyable');
 640                                 if(buyable === 'True') { link.className = null; }
 641                                 else if(buyable === 'False') { link.className = 'hidden'; }
 642                                 this.image.alt = element.getAttribute('alt');
 643                                 this.updateBreadcrumbs(element.getAttribute('last_bc_url'),
 644                                                                            element.getAttribute('img_id'));
 645                                 break;
 646                 }
 647         }
 648 };
 649
 650 FilmSlider.prototype.refreshImage = function() {
 651         this.image.style.visibility = 'hidden';
 652         this.image.src = this.pendingImage.src;
 653         this.image.width = this.pendingImage.width;
 654         this.image.height = this.pendingImage.height;
 655         this.image.style.visibility = 'visible';
 656         if (this.selectedSlideInSelection) { this.image.parentNode.className = 'selected'; }
 657         else { this.image.parentNode.className = ''; }
 658 };
 659
 660 FilmSlider.prototype.updateBreadcrumbs = function(url, title) {
 661         if (this.hasBreadcrumbs) {
 662                 this.lastBCElement.href = element.getAttribute('lastBcUrl');
 663                 this.lastBCElement.innerHTML = element.getAttribute('img_id');
 664         }
 665 };
 666
 667 FilmSlider.prototype.startSlideShow = function() {
 668         this.slideShowSlide = this.pendingSlideShowSlide = this.selectedSlide;
 669         return this.slideShowSlide.href;
 670 };
 671
 672 FilmSlider.prototype.slideShowNext = function() {
 673         var nextSlide = this.slideShowSlide.parentNode.nextSibling;
 674         if (nextSlide && nextSlide.nodeType===3) { nextSlide = nextSlide.nextSibling; }
 675
 676         if (nextSlide) {
 677                 nextSlide = nextSlide.getElementsByTagName('a')[0];
 678                 this.pendingSlideShowSlide = nextSlide;
 679                 return this.pendingSlideShowSlide.href;
 680         }
 681         else {
 682                 var row = this.slideShowSlide.parentNode.parentNode;
 683                 var first = row.firstChild;
 684                 if (first.nodeType===3) { first = first.nextSibling; }
 685                 this.pendingSlideShowSlide = first.getElementsByTagName('a')[0];
 686                 return this.pendingSlideShowSlide.href;
 687         }
 688 };
 689
 690 FilmSlider.prototype.slideShowPrevious = function() {
 691         var previousSlide = this.slideShowSlide.parentNode.previousSibling;
 692         if (previousSlide && previousSlide.nodeType===3) { previousSlide = previousSlide.previousSibling; }
 693
 694         if (previousSlide) {
 695                 previousSlide = previousSlide.getElementsByTagName('a')[0];
 696                 this.pendingSlideShowSlide = previousSlide;
 697                 return this.pendingSlideShowSlide.href;
 698         }
 699         else {
 700                 var row = this.slideShowSlide.parentNode.parentNode;
 701                 var last = row.lastChild;
 702                 if (last.nodeType===3) { last = last.previousSibling; }
 703                 this.pendingSlideShowSlide = last.getElementsByTagName('a')[0];
 704                 return this.pendingSlideShowSlide.href;
 705         }
 706 };
 707
 708 FilmSlider.prototype.slideShowImageLoaded = function() {
 709         this.slideShowSlide = this.pendingSlideShowSlide;
 710 };
 711
 712 FilmSlider.prototype.stopSlideShow = function() {
 713         raiseMouseEvent(this.slideShowSlide, 'click');
 714         var index = parseInt(this.selectedSlide.getAttribute('portfolio:position'), 10);
 715         this.centerSlide(index);
 716 };
 717
 718
 719 /* UTILS */
 720 function Point(x, y) {
 721         this.x = Math.round(x);
 722         this.y = Math.round(y);
 723 }
 724 Point.prototype.diff = function(point) { return new Point(this.x - point.x, this.y - point.y); };
 725 Point.prototype.add = function(point) { return new Point(this.x + point.x, this.y + point.y); };
 726 Point.prototype.mul = function(k) { return new Point(this.x * k, this.y *k); };
 727 Point.prototype.toString = function() { return "(" + String(this.x) + ", " + String(this.y) + ")"; };
 728
 729 }());