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 (function(){
   9
  10 var keyLeft = 37, keyRight = 39;
  11 var isTextMime = /^text\/.+/i;
  12 var isAddToSelection = /.*\/add_to_selection$/;
  13 var imgRequestedSize = /size=(\d+)/;
  14 var DEFAULT_IMAGE_SIZES = [500, 600, 800];
  15
  16 FilmSlider = function(filmBar, slider, ctxInfos, image, toolbar, breadcrumbs) {
  17         var thisSlider = this;
  18         this.filmBar = filmBar;
  19         this.filmBarWidth = getObjectWidth(this.filmBar);
  20         var film = filmBar.firstChild;
  21         if (film.nodeType === 3) { film = film.nextSibling; }
  22         this.film = film;
  23         this.slider = slider;
  24         this.rail = slider.parentNode;
  25         this.sliderSpeedRatio = undefined;
  26         this.sliderRatio = undefined;
  27         this.selectedSlide = undefined;
  28         this.selectedSlideInSelection = undefined;
  29         this.cartSlide = document.getElementById('cart_slide');
  30         this.image = image;
  31         this.stretchable = image.parentNode;
  32         this.viewMode = 'medium';
  33
  34         this.buttons = [];
  35         this.toolbar = toolbar;
  36         if (breadcrumbs) {
  37                 var bcElements = breadcrumbs.getElementsByTagName('a');
  38                 this.lastBCElement = bcElements[bcElements.length-1];
  39                 var imgSrcParts = image.src.split('/');
  40                 this.lastBCElement.innerHTML = imgSrcParts[imgSrcParts.length-2];
  41                 this.hasBreadcrumbs = true;
  42         }
  43         else {
  44                 this.hasBreadcrumbs = false;
  45         }
  46
  47         var buttons = toolbar.getElementsByTagName('img');
  48         var b, name, i;
  49         for (i=0 ; i<buttons.length ; i++) {
  50                 b = buttons[i];
  51                 name = b.getAttribute('name');
  52                 if (name) { this.buttons[name] = b; }
  53         }
  54
  55         this.pendingImage = new Image();
  56         this.pendingImage.onload = function() {
  57                 thisSlider.refreshImage();
  58         };
  59         this.initialized = false;
  60
  61         this.film.style.left='0';
  62         this.film.style.top='0';
  63
  64         this.filmLength = ctxInfos.filmLength;
  65         this.center = ctxInfos.center;
  66         this.slideSize = ctxInfos.slideSize;
  67         this.ctxUrlTranslation = ctxInfos.ctxUrlTranslation;
  68
  69         this.ddHandlers = {'down' : function(evt){thisSlider.mouseDownHandler(evt);},
  70                                            'move' : function(evt){thisSlider.mouseMoveHandler(evt);},
  71                                            'up' :       function(evt){thisSlider.mouseUpHandler(evt);},
  72                                            'out' :      function(evt){thisSlider.mouseOutHandler(evt);}
  73                                           };
  74
  75         if (browser.isMobile) {
  76                 this.rail.className = 'hidden';
  77         }
  78         else {
  79                 this.resizeSlider();
  80         }
  81         this.addEventListeners();
  82 };
  83
  84 if (!browser.isMobile) {
  85         FilmSlider.prototype.resizeSlider = function(evt) {
  86                 var filmBarWidth = this.filmBarWidth;
  87                 if (!filmBarWidth) { return; }
  88                 var filmWidth = this.slideSize * this.filmLength;
  89                 var sliderRatio = this.sliderRatio =  filmBarWidth / filmWidth;
  90                 var sliderWidth = filmBarWidth * sliderRatio;
  91                 this.rail.style.width = filmBarWidth + 'px';
  92                 this.rail.style.display = 'block';
  93                 this.rail.style.visibility = 'visible';
  94                 if (sliderRatio < 1) {
  95                         this.slider.style.width = Math.round(sliderWidth) + 'px';
  96                         this.slider.style.visibility = 'visible';
  97                 }
  98                 else {
  99                         this.slider.style.visibility = 'hidden';
 100                 }
 101
 102                 this.winSize = {'width'  : getWindowWidth(),
 103                                                 'height' : getWindowHeight()};
 104                 this.maxRightPosition = filmBarWidth - sliderWidth;
 105                 this.sliderSpeedRatio = - (filmBarWidth - sliderWidth) / (filmWidth - filmBarWidth);
 106                 if (!this.initialized) {
 107                         this.centerSlide(this.center);
 108                         this.selectedSlide = this.filmBar.getElementsByTagName('img')[this.center].parentNode;
 109                         this.initialized = true;
 110                 }
 111         };
 112 }
 113
 114 else {
 115         // pas de barre de scroll horizontal pour les tablettes
 116         FilmSlider.prototype.resizeSlider = function(evt) {
 117                 this.filmMaxX = - (getObjectWidth(this.film) - this.filmBarWidth);
 118                 if (!this.initialized) {
 119                         this.centerSlide(this.center);
 120                         this.selectedSlide = this.filmBar.getElementsByTagName('img')[this.center].parentNode;
 121                         this.initialized = true;
 122                 }
 123         };
 124 }
 125
 126 FilmSlider.prototype._checkSizeAfterLoad = function(evt) {
 127         this._barSizes = [];
 128         this.filmBarWidth = this._barSizes[this._barSizes.length] = getObjectWidth(this.filmBar);
 129         this.resizeSlider();
 130         var self = this;
 131         this._checkSizeIntervalId = setInterval(function(evt){self._checkSize(evt);}, 25);
 132         setTimeout(function(evt){self._checkSizeStability();}, 250);
 133 };
 134
 135 FilmSlider.prototype._checkSize = function(evt) {
 136         this._barSizes[this._barSizes.length] = getObjectWidth(this.filmBar);
 137         if (this._barSizes.length >= 2 &&
 138                 this._barSizes[this._barSizes.length-2] !== this._barSizes[this._barSizes.length-1]) {
 139                 this.filmBarWidth = this._barSizes[this._barSizes.length-1];
 140                 this.initialized = false;
 141                 this.resizeSlider();
 142         }
 143 };
 144
 145 FilmSlider.prototype._checkSizeStability = function(evt) {
 146         var self = this;
 147         var i;
 148         var checkAgain = function(evt){self._checkSizeStability();};
 149         for (i=0 ; i<this._barSizes.length - 1 ; i++) {
 150                 if (this._barSizes[i] !== this._barSizes[i+1]) {
 151                         this._barSizes = [];
 152                         setTimeout(checkAgain, 250);
 153                         return;
 154                 }
 155         }
 156         clearInterval(this._checkSizeIntervalId);
 157         delete this._barSizes;
 158         delete this._checkSizeIntervalId;
 159 };
 160
 161 FilmSlider.prototype.fitToScreen = function(evt) {
 162         this._fitToScreen();
 163         var thisSlider = this;
 164         addListener(window, 'resize', function(evt){thisSlider._fitToScreen();});
 165 };
 166
 167 FilmSlider.prototype._fitToScreen = function(evt) {
 168         var wh = getWindowHeight();
 169         var rb;
 170         if (!browser.isMobile) {
 171                 rb = getObjectTop(this.rail) + getObjectHeight(this.rail); // rail bottom
 172         }
 173         else {
 174                 rb = getObjectTop(this.filmBar) + getObjectHeight(this.filmBar); // film bottom
 175         }
 176         var delta = wh - rb;
 177         var sh = getObjectHeight(this.stretchable);
 178         var newSize = sh + delta;
 179         this.stretchable.style.height = newSize + 'px';
 180
 181         var ratio = this.image.height / this.image.width;
 182         var bestFitSize = this.getBestFitSize(ratio);
 183         var currentSize = parseInt(imgRequestedSize.exec(this.image.src)[1], 10);
 184         if (currentSize !== bestFitSize) {
 185                 var src = this.image.src.replace(imgRequestedSize, 'size=' + bestFitSize);
 186                 this.pendingImage.src = src;
 187         }
 188         this.adjustImage(this.image);
 189 };
 190
 191 FilmSlider.prototype.getBestFitSize = function(ratio) {
 192         var fw = getObjectWidth(this.stretchable) - 1;
 193         var fh = getObjectHeight(this.stretchable) - 1;
 194
 195         var i, irw, irh;
 196         if (ratio < 1) {
 197                 for (i=DEFAULT_IMAGE_SIZES.length -1 ; i>0 ; i--) {
 198                         irw = DEFAULT_IMAGE_SIZES[i];
 199                         irh = irw * ratio;
 200                         if (irw <= fw && irh <= fh) { break; }
 201                 }
 202         }
 203         else {
 204                 for (i=DEFAULT_IMAGE_SIZES.length -1 ; i>0 ; i--) {
 205                         irh = DEFAULT_IMAGE_SIZES[i];
 206                         irw = irh / ratio;
 207                         if (irw <= fw && irh <= fh) { break; }
 208                 }
 209         }
 210         return DEFAULT_IMAGE_SIZES[i];
 211 };
 212
 213 FilmSlider.prototype.adjustImage = function(img) {
 214         var dispWidth = parseInt(this.stretchable.style.width);
 215         var imgWidth = img.naturalWidth;
 216         var dispHeight = parseInt(this.stretchable.style.height);
 217         var imgHeight = img.naturalHeight;
 218         var ratio;
 219
 220         if (imgHeight > dispHeight) {
 221                 ratio = dispHeight / imgHeight;
 222                 imgWidth = imgWidth * ratio;
 223                 imgHeight = dispHeight;
 224         }
 225         if (imgWidth > dispWidth) {
 226                 ratio = dispWidth / imgWidth;
 227                 imgHeight = imgHeight * ratio;
 228                 imgWidth = dispWidth;
 229         }
 230         img.width = imgWidth;
 231         img.height = imgHeight;
 232 };
 233
 234 if (!browser.isMobile) {
 235         FilmSlider.prototype.centerSlide = function(slideIndex) {
 236                 if (this.sliderRatio > 1) { return; }
 237                 var filmBarWidth = getObjectWidth(this.filmBar);
 238                 var x = slideIndex * this.slideSize;
 239                 x = x - (filmBarWidth - this.slideSize) / 2.0;
 240                 x = x * this.sliderSpeedRatio;
 241                 var p = new Point( -x, 0 );
 242                 this.setSliderPosition(p);
 243         };
 244 }
 245 else {
 246         FilmSlider.prototype.centerSlide = function(slideIndex) {
 247                 var filmBarWidth = getObjectWidth(this.filmBar);
 248                 var x = slideIndex * this.slideSize;
 249                 x = x - (filmBarWidth - this.slideSize) / 2.0;
 250                 this.setFilmPosition(-x);
 251         };
 252 }
 253
 254 FilmSlider.prototype.setSliderPosition = function(point) {
 255         if(point.x < 0) { point.x = 0; }
 256         if (point.x > this.maxRightPosition) { point.x = this.maxRightPosition; }
 257         this.slider.style.left = point.x + 'px';
 258         this.setFilmPosition(point);
 259 };
 260
 261 if (!browser.isMobile) {
 262         FilmSlider.prototype.setFilmPosition = function(point) {
 263                 this.film.style.left = point.x / this.sliderSpeedRatio + 'px';
 264         };
 265 }
 266 else {
 267         FilmSlider.prototype.setFilmPosition = function(x) {
 268                 x = Math.min(0, x);
 269                 x = Math.max(this.filmMaxX, x);
 270                 this.film.style.left = String(x) + 'px';
 271         };
 272 }
 273
 274 FilmSlider.prototype.getSliderPosition = function() {
 275         var x = parseInt(this.slider.style.left, 10);
 276         var y = parseInt(this.slider.style.top, 10);
 277         var p = new Point(x, y);
 278         return p;
 279 };
 280
 281 FilmSlider.prototype.getFilmPosition = function() {
 282         var x = parseInt(this.film.style.left, 10);
 283         var y = parseInt(this.film.style.top, 10);
 284         var p = new Point(x, y);
 285         return p;
 286 };
 287
 288 FilmSlider.prototype.loadSibling = function(previous) {
 289         var slide = null;
 290         if (previous) {
 291                 slide = this.selectedSlide.parentNode.previousSibling;
 292                 if (slide && slide.nodeType===3) { slide = slide.previousSibling; }
 293         }
 294         else {
 295                 slide = this.selectedSlide.parentNode.nextSibling;
 296                 if (slide && slide.nodeType===3) { slide = slide.nextSibling; }
 297         }
 298
 299         if (!slide) { return; }
 300         else {
 301                 var target = slide.getElementsByTagName('a')[0];
 302                 raiseMouseEvent(target, 'click');
 303                 var index = parseInt(target.getAttribute('portfolio:position'), 10);
 304                 this.centerSlide(index);
 305         }
 306 };
 307
 308 FilmSlider.prototype.addEventListeners = function() {
 309         var thisSlider = this;
 310         addListener(window, 'resize', function(evt){thisSlider.resizeSlider(evt);});
 311         addListener(this.filmBar, 'click', function(evt){thisSlider.thumbnailClickHandler(evt);});
 312         addListener(this.toolbar, 'click', function(evt){thisSlider.toolbarClickHandler(evt);});
 313         addListener(window, 'load', function(evt){thisSlider.fitToScreen(evt);});
 314         addListener(window, 'load', function(evt){thisSlider._checkSizeAfterLoad(evt);});
 315         addListener(window, 'load', function(evt){thisSlider.startThumbnailsLoadQueue(evt);});
 316
 317         // dd listeners
 318         addListener(this.slider, 'mousedown', this.ddHandlers.down);
 319         if(browser.isDOM2Event){
 320                 if (browser.isAppleWebKit) {
 321                         this.filmBar.addEventListener('mousewheel', function(evt){thisSlider.mouseWheelHandler(evt);}, false);
 322                 }
 323                 else {
 324                         addListener(this.filmBar, 'DOMMouseScroll', function(evt){thisSlider.mouseWheelHandler(evt);});
 325                 }
 326         }
 327         else if (browser.isIE6up) {
 328                 addListener(this.filmBar, 'mousewheel', function(evt){thisSlider.mouseWheelHandler(evt);});
 329         }
 330         if (browser.isMobile) {
 331                 this.filmBar.addEventListener('touchstart', function(evt){thisSlider.touchStartHandler(evt);}, false);
 332                 this.filmBar.addEventListener('touchmove', function(evt){thisSlider.touchMoveHandler(evt);}, false);
 333                 this.filmBar.addEventListener('touchend', function(evt){thisSlider.touchEndHandler(evt);}, false);
 334         }
 335
 336         addListener(document, 'keydown', function(evt){thisSlider.keyDownHandler(evt);});
 337         addListener(document, 'keypress', function(evt){thisSlider.keyPressHandler(evt);});
 338 };
 339
 340
 341 FilmSlider.prototype.mouseDownHandler = function(evt) {
 342         this.initialClickPoint = new Point(evt.clientX, evt.clientY);
 343         this.initialPosition = this.getSliderPosition();
 344         this.dragInProgress = true;
 345         addListener(document, 'mousemove', this.ddHandlers.move);
 346         addListener(document, 'mouseup', this.ddHandlers.up);
 347         addListener(document.body, 'mouseout', this.ddHandlers.out);
 348 };
 349
 350
 351 FilmSlider.prototype.mouseMoveHandler = function(evt) {
 352         if(!this.dragInProgress) { return; }
 353
 354         clearSelection();
 355         evt = getEventObject(evt);
 356         var currentPoint = new Point(evt.clientX, evt.clientY);
 357         var displacement = currentPoint.diff(this.initialClickPoint);
 358         this.setSliderPosition(this.initialPosition.add(displacement));
 359 };
 360
 361 FilmSlider.prototype.mouseUpHandler = function(evt) {
 362         this.dragInProgress = false;
 363         evt = getEventObject(evt);
 364         this.mouseMoveHandler(evt);
 365 };
 366
 367
 368 FilmSlider.prototype.mouseOutHandler = function(evt) {
 369         evt = getEventObject(evt);
 370         var x = evt.clientX;
 371         var y = evt.clientY;
 372         if (x < 0 ||
 373                 x > this.winSize.width ||
 374                 y < 0 ||
 375                 y > this.winSize.height
 376                 ) {
 377                 this.mouseUpHandler(evt);
 378         }
 379 };
 380
 381 FilmSlider.prototype.translateImgUrl = function(url) {
 382         var canonicalImgUrl;
 383         if (this.ctxUrlTranslation[0]) {
 384                 canonicalImgUrl = url.replace(this.ctxUrlTranslation[0],
 385                                                                           this.ctxUrlTranslation[1]);
 386         }
 387         else {
 388                 canonicalImgUrl = url;
 389         }
 390         return canonicalImgUrl;
 391 };
 392
 393 FilmSlider.prototype.thumbnailClickHandler = function(evt) {
 394         var target = getTargetedObject(evt);
 395         while (target.tagName !== 'A' && target !== this.filmBar) { target = target.parentNode; }
 396         if (target.tagName !== 'A') { return; }
 397         else {
 398                 if (this.viewMode === 'full') {
 399                         this.mosaique.unload();
 400                         this.mosaique = null;
 401                         this.viewMode = 'medium';
 402                 }
 403                 disableDefault(evt);
 404                 disablePropagation(evt);
 405                 target.blur();
 406                 history.pushState(target.href, '', target.href);
 407
 408                 var imgBaseUrl = target.href;
 409                 var canonicalImgUrl = this.translateImgUrl(imgBaseUrl);
 410
 411                 var ajaxUrl = imgBaseUrl + '/photo_view_ajax';
 412                 var thisFS = this;
 413
 414                 //this.pendingImage.src = canonicalImgUrl + '/getResizedImage?size=600';
 415                 var thumbnail = target.getElementsByTagName('IMG')[0];
 416                 var bestFitSize = this.getBestFitSize(thumbnail.height/thumbnail.width);
 417                 this.pendingImage.src = canonicalImgUrl + '/getResizedImage?size=' + bestFitSize;
 418
 419                 // update buttons
 420                 var fullScreenLink = this.buttons.full_screen.parentNode;
 421                 fullScreenLink.href = canonicalImgUrl + '/zoom_view';
 422
 423                 var toggleSelectionBtn = this.buttons.toggle_selection;
 424                 var toggleSelectionLink = toggleSelectionBtn.parentNode;
 425                 this.selectedSlideInSelection = (target.className==='selected');
 426                 if (this.selectedSlideInSelection) {
 427                         toggleSelectionBtn.src = portal_url() + '/unselect_flag_btn.gif';
 428                         toggleSelectionBtn.alt = toggleSelectionLink.title = 'Retirer de la sélection';
 429                         toggleSelectionLink.href = canonicalImgUrl + '/remove_to_selection';
 430                 }
 431                 else {
 432                         toggleSelectionBtn.src = portal_url() + '/select_flag_btn.gif';
 433                         toggleSelectionBtn.alt = toggleSelectionLink.title = 'Ajouter à la sélection';
 434                         toggleSelectionLink.href = canonicalImgUrl + '/add_to_selection';
 435                 }
 436
 437                 var showBuyableButtonLink = this.buttons.show_buyable.parentNode;
 438                 showBuyableButtonLink.href = canonicalImgUrl + '/get_slide_buyable_items';
 439                 this.cartSlide.innerHTML = '';
 440                 this.cartSlide.style.visibility='hidden';
 441
 442
 443                 var metadataButton = this.buttons.edit_metadata;
 444                 if (metadataButton) {
 445                         var metadataEditLink = metadataButton.parentNode;
 446                         metadataEditLink.href = canonicalImgUrl + '/photo_edit_form';
 447                 }
 448
 449
 450                 var req = new XMLHttpRequest();
 451                 req.onreadystatechange = function() {
 452                         switch (req.readyState) {
 453                                 case 1 :
 454                                         showProgressImage();
 455                                         break;
 456                                 case 2 :
 457                                         try {
 458                                                 if (! isTextMime.exec(req.getResponseHeader('Content-Type'))) {
 459                                                         req.onreadystatechange = null;
 460                                                         req.abort();
 461                                                         hideProgressImage();
 462                                                         window.location.href = thisFS._fallBackUrl;
 463                                                 }
 464                                         }
 465                                         catch(e){}
 466                                         break;
 467                                 case 4 :
 468                                         hideProgressImage();
 469                                         if (req.status === 200) { thisFS.populateViewer(req); }
 470                                         break;
 471                         }
 472                 };
 473
 474                 req.open("GET", ajaxUrl, true);
 475                 req.send(null);
 476
 477                 // update old displayed slide className
 478                 var className = this.selectedSlide.className;
 479                 var classes = className.split(' ');
 480                 var newClasses = [];
 481                 var name, i;
 482
 483                 for (i=0 ; i<classes.length ;  i++) {
 484                         name = classes[i];
 485                         if (name !== 'displayed') {
 486                                 newClasses.push(name);
 487                         }
 488                 }
 489
 490                 this.selectedSlide.className = newClasses.join(' ');
 491
 492                 // hightlight new displayed slide
 493                 this.selectedSlide = target;
 494                 className = this.selectedSlide.className;
 495                 classes = className.split(' ');
 496                 classes.push('displayed');
 497                 this.selectedSlide.className = classes.join(' ');
 498         }
 499 };
 500
 501 FilmSlider.prototype.toolbarClickHandler = function(evt) {
 502         var target = getTargetedObject(evt);
 503         var button, link, url;
 504         if(target.tagName === 'IMG' && target.getAttribute('name')) {
 505                 switch(target.getAttribute('name')) {
 506                         case 'previous' :
 507                                 disableDefault(evt);
 508                                 disablePropagation(evt);
 509                                 button = target;
 510                                 link = button.parentNode;
 511                                 link.blur();
 512                                 this.loadSibling(true);
 513                                 break;
 514                         case 'next' :
 515                                 disableDefault(evt);
 516                                 disablePropagation(evt);
 517                                 button = target;
 518                                 link = button.parentNode;
 519                                 link.blur();
 520                                 this.loadSibling(false);
 521                                 break;
 522                         case 'full_screen':
 523                                 disableDefault(evt);
 524                                 disablePropagation(evt);
 525                                 target.parentNode.blur();
 526                                 if (this.viewMode === 'full') {
 527                                         this.mosaique.unload();
 528                                         this.mosaique = null;
 529                                         this.viewMode = 'medium';
 530                                         return;
 531                                 }
 532                                 var main = document.getElementById('photo_viewer');
 533                                 url = target.parentNode.href;
 534                                 url = url.substring(0, url.length - '/zoom_view'.length);
 535                                 var margins = {'top':0, 'right':-1, 'bottom':0, 'left':0};
 536                                 this.mosaique = new Mosaique(main, url, margins);
 537                                 this.viewMode = 'full';
 538                                 break;
 539
 540                         case 'toggle_selection':
 541                                 disableDefault(evt);
 542                                 disablePropagation(evt);
 543                                 button = target;
 544                                 link = button.parentNode;
 545                                 link.blur();
 546
 547                                 var req = new XMLHttpRequest();
 548                                 url = link.href;
 549                                 req.open("POST", url, true);
 550                                 req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 551                                 req.send("ajax=1");
 552
 553                                 // toggle button
 554                                 var parts = url.split('/');
 555                                 var canonicalImgUrl = parts.slice(0, parts.length-1).join('/');
 556
 557                                 if (isAddToSelection.test(url)) {
 558                                         button.src = portal_url() + '/unselect_flag_btn.gif';
 559                                         button.alt = link.title = 'Retirer de la sélection';
 560                                         link.href = canonicalImgUrl + '/remove_to_selection';
 561                                         this.selectedSlide.className = 'selected displayed';
 562                                         this.image.parentNode.className = 'selected';
 563                                         this.selectedSlideInSelection = true;
 564                                 }
 565                                 else {
 566                                         button.src = portal_url() + '/select_flag_btn.gif';
 567                                         button.alt = link.title = 'Ajouter à la sélection';
 568                                         link.href = canonicalImgUrl + '/add_to_selection';
 569                                         this.selectedSlide.className = 'displayed';
 570                                         this.image.parentNode.className = '';
 571                                         this.selectedSlideInSelection = false;
 572                                 }
 573                                 break;
 574
 575                         case 'show_buyable':
 576                                 disableDefault(evt);
 577                                 disablePropagation(evt);
 578                                 button = target;
 579                                 link = button.parentNode;
 580                                 link.blur();
 581                                 var slide = this.cartSlide;
 582                                 slide.innerHTML = '';
 583                                 slide.style.visibility = 'visible';
 584                                 var cw = new CartWidget(slide, link.href);
 585                                 cw.onCancel = function() {
 586                                         CartWidget.prototype.onCancel.apply(this);
 587                                         slide.style.visibility = 'hidden';
 588                                 };
 589                                 cw.onAfterConfirm = function() {
 590                                         slide.style.visibility = 'hidden';
 591                                 };
 592                                 break;
 593
 594
 595
 596
 597                         /*
 598                         case 'edit_metadata' :
 599                                 disableDefault(evt);
 600                                 disablePropagation(evt);
 601                                 target.blur();
 602                                 if (this.viewMode === 'full') {
 603                                         this.mosaique.unload();
 604                                         this.mosaique = null;
 605                                         this.viewMode = 'medium';
 606                                         return;
 607                                 }
 608                                 var fi = new FragmentImporter(absolute_url());
 609                                 fi.useMacro('metadata_edit_form_macros', 'iptc', 'image_metadata');
 610                                 break;
 611                         */
 612                 }
 613         }
 614 };
 615
 616
 617 if(browser.isDOM2Event) {
 618         if (browser.isAppleWebKit) {
 619                 FilmSlider.prototype.mouseWheelHandler = function(evt) {
 620                         disableDefault(evt);
 621                         var pos = this.getSliderPosition();
 622                         pos.x -= evt.wheelDelta / 40;
 623                         this.setSliderPosition(pos);
 624                 };
 625         }
 626         else {
 627                 FilmSlider.prototype.mouseWheelHandler = function(evt) {
 628                         disableDefault(evt);
 629                         var pos = this.getSliderPosition();
 630                         pos.x += evt.detail * 3;
 631                         this.setSliderPosition(pos);
 632                 };
 633         }
 634 }
 635 else if (browser.isIE6up) {
 636         FilmSlider.prototype.mouseWheelHandler = function() {
 637                 var evt = window.event;
 638                 evt.returnValue = false;
 639                 var pos = this.getSliderPosition();
 640                 pos.x -= evt.wheelDelta / 40;
 641                 this.setSliderPosition(pos);
 642         };
 643 }
 644
 645 FilmSlider.prototype.touchStartHandler = function(evt) {
 646         this.filmStartX = parseInt(this.film.style.left, 10);
 647         this.touchStartX = evt.changedTouches[0].screenX;
 648         this.touchStartTime = (new Date()).getTime();
 649 };
 650
 651 FilmSlider.prototype.touchMoveHandler = function(evt) {
 652         disableDefault(evt);
 653         var delta = this.touchStartX - evt.changedTouches[0].screenX;
 654         var posX = this.filmStartX - delta;
 655         this.setFilmPosition(posX);
 656         this.lastMoveTime = (new Date()).getTime();
 657 };
 658
 659 FilmSlider.prototype.touchEndHandler = function(evt) {
 660         var x = evt.changedTouches[0].screenX;
 661         var delta = x - this.touchStartX;
 662         if (delta) {
 663                 disableDefault(evt);
 664                 var now = (new Date()).getTime();
 665                 if (now - this.lastMoveTime < 100) {
 666                         // au delà de 100 ms de maintient, on annule l'inertie
 667                         var speed = delta / (now - this.touchStartTime);
 668                         var x0 = parseInt(this.film.style.left, 10);
 669                         var t0 = (new Date()).getTime();
 670                         var d = 500; // milisecondes
 671                         delta = 0;
 672                         var dt = 25;
 673                         var self = this;
 674
 675                         var animate = function() {
 676                                 // inertie
 677                                 var t = (new Date()).getTime() - t0;
 678                                 if (t < d) {
 679                                         setTimeout(animate, dt);
 680                                         delta = delta + (1-t/d) * speed * dt; // décelleration linéaire
 681                                         self.setFilmPosition(x0 + delta);
 682                                 }
 683                         };
 684                         animate();
 685                 }
 686         }
 687         this.touchStartX = undefined;
 688 };
 689
 690
 691 FilmSlider.prototype.keyDownHandler = function(evt) {
 692         evt = getEventObject(evt);
 693         switch (evt.keyCode) {
 694                 case keyLeft :
 695                         this.loadSibling(true);
 696                         break;
 697                 case keyRight :
 698                         this.loadSibling(false);
 699                         break;
 700                 default:
 701                         return;
 702         }
 703 };
 704
 705
 706 FilmSlider.prototype.keyPressHandler = function(evt) {
 707         var target = getTargetedObject(evt);
 708         if (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA') { return; }
 709         evt = getEventObject(evt);
 710         var charPress = String.fromCharCode((evt.keyCode) ? evt.keyCode : evt.which);
 711         switch(charPress) {
 712                 case 'f':
 713                 case 'F':
 714                         raiseMouseEvent(this.buttons.full_screen, 'click');
 715                         break;
 716         }
 717 };
 718
 719 FilmSlider.prototype.populateViewer = function(req) {
 720         var elements = req.responseXML.documentElement.childNodes;
 721         var i;
 722         for(i=0 ; i < elements.length ; i++ ) {
 723                 element = elements[i];
 724                 switch (element.nodeName) {
 725                         case 'fragment' :
 726                                 var dest = document.getElementById(element.getAttribute('id'));
 727                                 if (dest) { dest.innerHTML = element.firstChild.nodeValue; }
 728                                 break;
 729                         case 'imageattributes' :
 730                                 var link = this.buttons.back_to_portfolio.parentNode;
 731                                 link.href = element.getAttribute('back_to_context_url');
 732                                 link = this.buttons.show_buyable.parentNode;
 733                                 var buyable = element.getAttribute('buyable');
 734                                 if(buyable === 'True') { link.className = null; }
 735                                 else if(buyable === 'False') { link.className = 'hidden'; }
 736                                 this.image.alt = element.getAttribute('alt');
 737                                 this.updateBreadcrumbs(element.getAttribute('last_bc_url'),
 738                                                                            element.getAttribute('img_id'));
 739                                 break;
 740                 }
 741         }
 742 };
 743
 744 FilmSlider.prototype.refreshImage = function() {
 745         this.adjustImage(this.pendingImage);
 746         this.image.style.visibility = 'hidden';
 747         this.image.src = this.pendingImage.src;
 748         this.image.width = this.pendingImage.width;
 749         this.image.height = this.pendingImage.height;
 750         this.image.style.visibility = 'visible';
 751         if (this.selectedSlideInSelection) { this.image.parentNode.className = 'selected'; }
 752         else { this.image.parentNode.className = ''; }
 753 };
 754
 755 FilmSlider.prototype.updateBreadcrumbs = function(url, title) {
 756         if (this.hasBreadcrumbs) {
 757                 this.lastBCElement.href = url;
 758                 this.lastBCElement.innerHTML = title;
 759         }
 760 };
 761
 762 FilmSlider.prototype.startThumbnailsLoadQueue = function(evt) {
 763         var thumbnails = this.film.getElementsByTagName('img');
 764         if (thumbnails.length === 1) { return; }
 765         this.thumbnailsLoadingOrder = [];
 766         var leftSize = this.center;
 767         var rightSize = thumbnails.length - this.center - 1;
 768         var i;
 769         for (i=1 ; i<=Math.min(leftSize, rightSize) ; i++) {
 770                 this.thumbnailsLoadingOrder.push(thumbnails[this.center + i]);
 771                 this.thumbnailsLoadingOrder.push(thumbnails[this.center - i]);
 772         }
 773         if (leftSize > rightSize) {
 774                 for (i = this.center - rightSize - 1 ; i >= 0 ; i--) {
 775                         this.thumbnailsLoadingOrder.push(thumbnails[i]);
 776                 }
 777         }
 778         else if (leftSize < rightSize) {
 779                 for (i = this.center + leftSize + 1 ; i < thumbnails.length ; i++) {
 780                         this.thumbnailsLoadingOrder.push(thumbnails[i]);
 781                 }
 782         }
 783         var next = this.thumbnailsLoadingOrder.shift();
 784         var self = this;
 785         addListener(next, 'load', function(evt){self._loadNextThumb(evt);});
 786         next.src = this.translateImgUrl(next.parentNode.href) + '/getThumbnail';
 787 };
 788
 789 FilmSlider.prototype._loadNextThumb = function(evt) {
 790         var next = this.thumbnailsLoadingOrder.shift();
 791         if (!next) {return;}
 792         var self = this;
 793         addListener(next, 'load', function(evt){self._loadNextThumb(evt);});
 794         next.src = this.translateImgUrl(next.parentNode.href) + '/getThumbnail';
 795 };
 796
 797
 798 FilmSlider.prototype.startSlideShow = function() {
 799         this.slideShowSlide = this.pendingSlideShowSlide = this.selectedSlide;
 800         return this.slideShowSlide.href;
 801 };
 802
 803 FilmSlider.prototype.slideShowNext = function() {
 804         var nextSlide = this.slideShowSlide.parentNode.nextSibling;
 805         if (nextSlide && nextSlide.nodeType===3) { nextSlide = nextSlide.nextSibling; }
 806
 807         if (nextSlide) {
 808                 nextSlide = nextSlide.getElementsByTagName('a')[0];
 809                 this.pendingSlideShowSlide = nextSlide;
 810                 return this.pendingSlideShowSlide.href;
 811         }
 812         else {
 813                 var row = this.slideShowSlide.parentNode.parentNode;
 814                 var first = row.firstChild;
 815                 if (first.nodeType===3) { first = first.nextSibling; }
 816                 this.pendingSlideShowSlide = first.getElementsByTagName('a')[0];
 817                 return this.pendingSlideShowSlide.href;
 818         }
 819 };
 820
 821 FilmSlider.prototype.slideShowPrevious = function() {
 822         var previousSlide = this.slideShowSlide.parentNode.previousSibling;
 823         if (previousSlide && previousSlide.nodeType===3) { previousSlide = previousSlide.previousSibling; }
 824
 825         if (previousSlide) {
 826                 previousSlide = previousSlide.getElementsByTagName('a')[0];
 827                 this.pendingSlideShowSlide = previousSlide;
 828                 return this.pendingSlideShowSlide.href;
 829         }
 830         else {
 831                 var row = this.slideShowSlide.parentNode.parentNode;
 832                 var last = row.lastChild;
 833                 if (last.nodeType===3) { last = last.previousSibling; }
 834                 this.pendingSlideShowSlide = last.getElementsByTagName('a')[0];
 835                 return this.pendingSlideShowSlide.href;
 836         }
 837 };
 838
 839 FilmSlider.prototype.slideShowImageLoaded = function() {
 840         this.slideShowSlide = this.pendingSlideShowSlide;
 841 };
 842
 843 FilmSlider.prototype.stopSlideShow = function() {
 844         raiseMouseEvent(this.slideShowSlide, 'click');
 845         var index = parseInt(this.selectedSlide.getAttribute('portfolio:position'), 10);
 846         this.centerSlide(index);
 847 };
 848
 849
 850 /* UTILS */
 851 function Point(x, y) {
 852         this.x = Math.round(x);
 853         this.y = Math.round(y);
 854 }
 855 Point.prototype.diff = function(point) { return new Point(this.x - point.x, this.y - point.y); };
 856 Point.prototype.add = function(point) { return new Point(this.x + point.x, this.y + point.y); };
 857 Point.prototype.mul = function(k) { return new Point(this.x * k, this.y *k); };
 858 Point.prototype.toString = function() { return "(" + String(this.x) + ", " + String(this.y) + ")"; };
 859
 860 }());