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 var s;
   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         s = this;
  20         this.filmBar = filmBar;
  21         this.filmBarWidth = getObjectWidth(this.filmBar);
  22         var film = filmBar.firstChild;
  23         if (film.nodeType === 3) { film = film.nextSibling; }
  24         this.film = film;
  25         this.slider = slider;
  26         this.rail = slider.parentNode;
  27         this.sliderSpeedRatio = undefined;
  28         this.sliderRatio = undefined;
  29         this.selectedSlide = undefined;
  30         this.selectedSlideInSelection = undefined;
  31         this.cartSlide = document.getElementById('cart_slide');
  32         this.image = image;
  33         this.stretchable = image.parentNode;
  34         this.viewMode = 'medium';
  35
  36         this.buttons = [];
  37         this.toolbar = toolbar;
  38         if (breadcrumbs) {
  39                 var bcElements = breadcrumbs.getElementsByTagName('a');
  40                 this.lastBCElement = bcElements[bcElements.length-1];
  41                 var imgSrcParts = image.src.split('/');
  42                 this.lastBCElement.innerHTML = imgSrcParts[imgSrcParts.length-2];
  43                 this.hasBreadcrumbs = true;
  44         }
  45         else {
  46                 this.hasBreadcrumbs = false;
  47         }
  48
  49         var buttons = toolbar.getElementsByTagName('img');
  50         var b, name, i;
  51         for (i=0 ; i<buttons.length ; i++) {
  52                 b = buttons[i];
  53                 name = b.getAttribute('name');
  54                 if (name) { this.buttons[name] = b; }
  55         }
  56
  57         this.pendingImage = new Image();
  58         this.pendingImage.onload = function() {
  59                 thisSlider.refreshImage();
  60         };
  61         this.initialized = false;
  62
  63         this.film.style.left='0';
  64         this.film.style.top='0';
  65
  66         this.filmLength = ctxInfos.filmLength;
  67         this.center = ctxInfos.center;
  68         this.slideSize = ctxInfos.slideSize;
  69         this.ctxUrlTranslation = ctxInfos.ctxUrlTranslation;
  70
  71         this.ddHandlers = {'down' : function(evt){thisSlider.mouseDownHandler(evt);},
  72                                            'move' : function(evt){thisSlider.mouseMoveHandler(evt);},
  73                                            'up' :       function(evt){thisSlider.mouseUpHandler(evt);},
  74                                            'out' :      function(evt){thisSlider.mouseOutHandler(evt);}
  75                                           };
  76
  77         if (browser.isMobile) {
  78                 this.rail.className = 'hidden';
  79         }
  80         else {
  81                 this.resizeSlider();
  82         }
  83         this.addEventListeners();
  84 };
  85
  86 if (!browser.isMobile) {
  87         FilmSlider.prototype.resizeSlider = function(evt) {
  88                 var filmBarWidth = this.filmBarWidth;
  89                 if (!filmBarWidth) { return; }
  90                 var filmWidth = this.slideSize * this.filmLength;
  91                 var sliderRatio = this.sliderRatio =  filmBarWidth / filmWidth;
  92                 var sliderWidth = filmBarWidth * sliderRatio;
  93                 this.rail.style.width = filmBarWidth + 'px';
  94                 this.rail.style.display = 'block';
  95                 this.rail.style.visibility = 'visible';
  96                 if (sliderRatio < 1) {
  97                         this.slider.style.width = Math.round(sliderWidth) + 'px';
  98                         this.slider.style.visibility = 'visible';
  99                 }
 100                 else {
 101                         this.slider.style.visibility = 'hidden';
 102                 }
 103
 104                 this.winSize = {'width'  : getWindowWidth(),
 105                                                 'height' : getWindowHeight()};
 106                 this.maxRightPosition = filmBarWidth - sliderWidth;
 107                 this.sliderSpeedRatio = - (filmBarWidth - sliderWidth) / (filmWidth - filmBarWidth);
 108                 if (!this.initialized) {
 109                         this.centerSlide(this.center);
 110                         this.selectedSlide = this.filmBar.getElementsByTagName('img')[this.center].parentNode;
 111                         this.initialized = true;
 112                 }
 113         };
 114 }
 115
 116 else {
 117         // pas de barre de scroll horizontal pour les tablettes
 118         FilmSlider.prototype.resizeSlider = function(evt) {
 119                 this.filmMaxX = - (getObjectWidth(this.film) - this.filmBarWidth);
 120                 if (!this.initialized) {
 121                         this.centerSlide(this.center);
 122                         this.selectedSlide = this.filmBar.getElementsByTagName('img')[this.center].parentNode;
 123                         this.initialized = true;
 124                 }
 125         };
 126 }
 127
 128 FilmSlider.prototype._checkSizeAfterLoad = function(evt) {
 129         this._barSizes = [];
 130         this.filmBarWidth = this._barSizes[this._barSizes.length] = getObjectWidth(this.filmBar);
 131         this.resizeSlider();
 132         var self = this;
 133         this._checkSizeIntervalId = setInterval(function(evt){self._checkSize(evt);}, 25);
 134         setTimeout(function(evt){self._checkSizeStability();}, 250);
 135 };
 136
 137 FilmSlider.prototype._checkSize = function(evt) {
 138         this._barSizes[this._barSizes.length] = getObjectWidth(this.filmBar);
 139         if (this._barSizes.length >= 2 &&
 140                 this._barSizes[this._barSizes.length-2] !== this._barSizes[this._barSizes.length-1]) {
 141                 this.filmBarWidth = this._barSizes[this._barSizes.length-1];
 142                 this.initialized = false;
 143                 this.resizeSlider();
 144         }
 145 };
 146
 147 FilmSlider.prototype._checkSizeStability = function(evt) {
 148         var self = this;
 149         var i;
 150         var checkAgain = function(evt){self._checkSizeStability();};
 151         for (i=0 ; i<this._barSizes.length - 1 ; i++) {
 152                 if (this._barSizes[i] !== this._barSizes[i+1]) {
 153                         this._barSizes = [];
 154                         setTimeout(checkAgain, 250);
 155                         return;
 156                 }
 157         }
 158         clearInterval(this._checkSizeIntervalId);
 159         delete this._barSizes;
 160         delete this._checkSizeIntervalId;
 161 };
 162
 163 FilmSlider.prototype.fitToScreen = function(evt) {
 164         this._fitToScreen();
 165         var thisSlider = this;
 166         addListener(window, 'resize', function(evt){thisSlider._fitToScreen();});
 167 };
 168
 169 FilmSlider.prototype._fitToScreen = function(evt) {
 170         var wh = getWindowHeight();
 171         var rb;
 172         if (!browser.isMobile) {
 173                 rb = getObjectTop(this.rail) + getObjectHeight(this.rail); // rail bottom
 174         }
 175         else {
 176                 rb = getObjectTop(this.filmBar) + getObjectHeight(this.filmBar); // film bottom
 177         }
 178         var delta = wh - rb;
 179         var sh = getObjectHeight(this.stretchable);
 180         var newSize = sh + delta;
 181         this.stretchable.style.height = newSize + 'px';
 182
 183         var ratio = this.image.height / this.image.width;
 184         var bestFitSize = this.getBestFitSize(ratio);
 185         var currentSize = parseInt(imgRequestedSize.exec(this.image.src)[1], 10);
 186         if (currentSize !== bestFitSize) {
 187                 var src = this.image.src.replace(imgRequestedSize, 'size=' + bestFitSize);
 188                 this.pendingImage.src = src;
 189         }
 190         this.shrinkImage(this.image);
 191 };
 192
 193 FilmSlider.prototype.getBestFitSize = function(ratio) {
 194         var fw = getObjectWidth(this.stretchable) - 1;
 195         var fh = getObjectHeight(this.stretchable) - 1;
 196
 197         var i, irw, irh;
 198         if (ratio < 1) {
 199                 for (i=DEFAULT_IMAGE_SIZES.length -1 ; i>0 ; i--) {
 200                         irw = DEFAULT_IMAGE_SIZES[i];
 201                         irh = irw * ratio;
 202                         if (irw <= fw && irh <= fh) { break; }
 203                 }
 204         }
 205         else {
 206                 for (i=DEFAULT_IMAGE_SIZES.length -1 ; i>0 ; i--) {
 207                         irh = DEFAULT_IMAGE_SIZES[i];
 208                         irw = irh / ratio;
 209                         if (irw <= fw && irh <= fh) { break; }
 210                 }
 211         }
 212         return DEFAULT_IMAGE_SIZES[i];
 213 };
 214
 215 FilmSlider.prototype.shrinkImage = function(img) {
 216         var dispWidth = parseInt(this.stretchable.style.width);
 217         var imgWidth = img.width;
 218         var dispHeight = parseInt(this.stretchable.style.height);
 219         var imgHeight = img.height;
 220         var ratio;
 221
 222         if (imgHeight > dispHeight) {
 223                 ratio = dispHeight / imgHeight;
 224                 imgWidth = imgWidth * ratio;
 225                 imgHeight = dispHeight;
 226         }
 227         if (imgWidth > dispWidth) {
 228                 ratio = dispWidth / imgWidth;
 229                 imgHeight = imgHeight * ratio;
 230                 imgWidth = dispWidth;
 231         }
 232         img.width = imgWidth;
 233         img.height = imgHeight;
 234 };
 235
 236 if (!browser.isMobile) {
 237         FilmSlider.prototype.centerSlide = function(slideIndex) {
 238                 if (this.sliderRatio > 1) { return; }
 239                 var filmBarWidth = getObjectWidth(this.filmBar);
 240                 var x = slideIndex * this.slideSize;
 241                 x = x - (filmBarWidth - this.slideSize) / 2.0;
 242                 x = x * this.sliderSpeedRatio;
 243                 var p = new Point( -x, 0 );
 244                 this.setSliderPosition(p);
 245         };
 246 }
 247 else {
 248         FilmSlider.prototype.centerSlide = function(slideIndex) {
 249                 var filmBarWidth = getObjectWidth(this.filmBar);
 250                 var x = slideIndex * this.slideSize;
 251                 x = x - (filmBarWidth - this.slideSize) / 2.0;
 252                 this.setFilmPosition(-x);
 253         };
 254 }
 255
 256 FilmSlider.prototype.setSliderPosition = function(point) {
 257         if(point.x < 0) { point.x = 0; }
 258         if (point.x > this.maxRightPosition) { point.x = this.maxRightPosition; }
 259         this.slider.style.left = point.x + 'px';
 260         this.setFilmPosition(point);
 261 };
 262
 263 if (!browser.isMobile) {
 264         FilmSlider.prototype.setFilmPosition = function(point) {
 265                 this.film.style.left = point.x / this.sliderSpeedRatio + 'px';
 266         };
 267 }
 268 else {
 269         FilmSlider.prototype.setFilmPosition = function(x) {
 270                 x = Math.min(0, x);
 271                 x = Math.max(this.filmMaxX, x);
 272                 this.film.style.left = String(x) + 'px';
 273         };
 274 }
 275
 276 FilmSlider.prototype.getSliderPosition = function() {
 277         var x = parseInt(this.slider.style.left, 10);
 278         var y = parseInt(this.slider.style.top, 10);
 279         var p = new Point(x, y);
 280         return p;
 281 };
 282
 283 FilmSlider.prototype.getFilmPosition = function() {
 284         var x = parseInt(this.film.style.left, 10);
 285         var y = parseInt(this.film.style.top, 10);
 286         var p = new Point(x, y);
 287         return p;
 288 };
 289
 290 FilmSlider.prototype.loadSibling = function(previous) {
 291         var slide = null;
 292         if (previous) {
 293                 slide = this.selectedSlide.parentNode.previousSibling;
 294                 if (slide && slide.nodeType===3) { slide = slide.previousSibling; }
 295         }
 296         else {
 297                 slide = this.selectedSlide.parentNode.nextSibling;
 298                 if (slide && slide.nodeType===3) { slide = slide.nextSibling; }
 299         }
 300
 301         if (!slide) { return; }
 302         else {
 303                 var target = slide.getElementsByTagName('a')[0];
 304                 raiseMouseEvent(target, 'click');
 305                 var index = parseInt(target.getAttribute('portfolio:position'), 10);
 306                 this.centerSlide(index);
 307         }
 308 };
 309
 310 FilmSlider.prototype.addEventListeners = function() {
 311         var thisSlider = this;
 312         addListener(window, 'resize', function(evt){thisSlider.resizeSlider(evt);});
 313         addListener(this.filmBar, 'click', function(evt){thisSlider.thumbnailClickHandler(evt);});
 314         addListener(this.toolbar, 'click', function(evt){thisSlider.toolbarClickHandler(evt);});
 315         addListener(window, 'load', function(evt){thisSlider.fitToScreen(evt);});
 316         addListener(window, 'load', function(evt){thisSlider._checkSizeAfterLoad(evt);});
 317         addListener(window, 'load', function(evt){thisSlider.startThumbnailsLoadQueue(evt);});
 318
 319         // dd listeners
 320         addListener(this.slider, 'mousedown', this.ddHandlers.down);
 321         if(browser.isDOM2Event){
 322                 if (browser.isAppleWebKit) {
 323                         this.filmBar.addEventListener('mousewheel', function(evt){thisSlider.mouseWheelHandler(evt);}, false);
 324                 }
 325                 else {
 326                         addListener(this.filmBar, 'DOMMouseScroll', function(evt){thisSlider.mouseWheelHandler(evt);});
 327                 }
 328         }
 329         else if (browser.isIE6up) {
 330                 addListener(this.filmBar, 'mousewheel', function(evt){thisSlider.mouseWheelHandler(evt);});
 331         }
 332         if (browser.isMobile) {
 333                 this.filmBar.addEventListener('touchstart', function(evt){thisSlider.touchStartHandler(evt);}, false);
 334                 this.filmBar.addEventListener('touchmove', function(evt){thisSlider.touchMoveHandler(evt);}, false);
 335                 this.filmBar.addEventListener('touchend', function(evt){thisSlider.touchEndHandler(evt);}, false);
 336         }
 337
 338         addListener(document, 'keydown', function(evt){thisSlider.keyDownHandler(evt);});
 339         addListener(document, 'keypress', function(evt){thisSlider.keyPressHandler(evt);});
 340 };
 341
 342
 343 FilmSlider.prototype.mouseDownHandler = function(evt) {
 344         this.initialClickPoint = new Point(evt.clientX, evt.clientY);
 345         this.initialPosition = this.getSliderPosition();
 346         this.dragInProgress = true;
 347         addListener(document, 'mousemove', this.ddHandlers.move);
 348         addListener(document, 'mouseup', this.ddHandlers.up);
 349         addListener(document.body, 'mouseout', this.ddHandlers.out);
 350 };
 351
 352
 353 FilmSlider.prototype.mouseMoveHandler = function(evt) {
 354         if(!this.dragInProgress) { return; }
 355
 356         clearSelection();
 357         evt = getEventObject(evt);
 358         var currentPoint = new Point(evt.clientX, evt.clientY);
 359         var displacement = currentPoint.diff(this.initialClickPoint);
 360         this.setSliderPosition(this.initialPosition.add(displacement));
 361 };
 362
 363 FilmSlider.prototype.mouseUpHandler = function(evt) {
 364         this.dragInProgress = false;
 365         evt = getEventObject(evt);
 366         this.mouseMoveHandler(evt);
 367 };
 368
 369
 370 FilmSlider.prototype.mouseOutHandler = function(evt) {
 371         evt = getEventObject(evt);
 372         var x = evt.clientX;
 373         var y = evt.clientY;
 374         if (x < 0 ||
 375                 x > this.winSize.width ||
 376                 y < 0 ||
 377                 y > this.winSize.height
 378                 ) {
 379                 this.mouseUpHandler(evt);
 380         }
 381 };
 382
 383 FilmSlider.prototype.translateImgUrl = function(url) {
 384         var canonicalImgUrl;
 385         if (this.ctxUrlTranslation[0]) {
 386                 canonicalImgUrl = url.replace(this.ctxUrlTranslation[0],
 387                                                                           this.ctxUrlTranslation[1]);
 388         }
 389         else {
 390                 canonicalImgUrl = url;
 391         }
 392         return canonicalImgUrl;
 393 };
 394
 395 FilmSlider.prototype.thumbnailClickHandler = function(evt) {
 396         var target = getTargetedObject(evt);
 397         while (target.tagName !== 'A' && target !== this.filmBar) { target = target.parentNode; }
 398         if (target.tagName !== 'A') { return; }
 399         else {
 400                 if (this.viewMode === 'full') {
 401                         this.mosaique.unload();
 402                         this.mosaique = null;
 403                         this.viewMode = 'medium';
 404                 }
 405                 disableDefault(evt);
 406                 disablePropagation(evt);
 407                 target.blur();
 408                 history.pushState(target.href, '', target.href);
 409
 410                 var imgBaseUrl = target.href;
 411                 var canonicalImgUrl = this.translateImgUrl(imgBaseUrl);
 412
 413                 var ajaxUrl = imgBaseUrl + '/photo_view_ajax';
 414                 var thisFS = this;
 415
 416                 //this.pendingImage.src = canonicalImgUrl + '/getResizedImage?size=600';
 417                 var thumbnail = target.getElementsByTagName('IMG')[0];
 418                 var bestFitSize = this.getBestFitSize(thumbnail.height/thumbnail.width);
 419                 this.pendingImage.src = canonicalImgUrl + '/getResizedImage?size=' + bestFitSize;
 420
 421                 // update buttons
 422                 var fullScreenLink = this.buttons.full_screen.parentNode;
 423                 fullScreenLink.href = canonicalImgUrl + '/zoom_view';
 424
 425                 var toggleSelectionBtn = this.buttons.toggle_selection;
 426                 var toggleSelectionLink = toggleSelectionBtn.parentNode;
 427                 this.selectedSlideInSelection = (target.className==='selected');
 428                 if (this.selectedSlideInSelection) {
 429                         toggleSelectionBtn.src = portal_url() + '/unselect_flag_btn.gif';
 430                         toggleSelectionBtn.alt = toggleSelectionLink.title = 'Retirer de la sélection';
 431                         toggleSelectionLink.href = canonicalImgUrl + '/remove_to_selection';
 432                 }
 433                 else {
 434                         toggleSelectionBtn.src = portal_url() + '/select_flag_btn.gif';
 435                         toggleSelectionBtn.alt = toggleSelectionLink.title = 'Ajouter à la sélection';
 436                         toggleSelectionLink.href = canonicalImgUrl + '/add_to_selection';
 437                 }
 438
 439                 var showBuyableButtonLink = this.buttons.show_buyable.parentNode;
 440                 showBuyableButtonLink.href = canonicalImgUrl + '/get_slide_buyable_items';
 441                 this.cartSlide.innerHTML = '';
 442                 this.cartSlide.style.visibility='hidden';
 443
 444
 445                 var metadataButton = this.buttons.edit_metadata;
 446                 if (metadataButton) {
 447                         var metadataEditLink = metadataButton.parentNode;
 448                         metadataEditLink.href = canonicalImgUrl + '/photo_edit_form';
 449                 }
 450
 451
 452                 var req = new XMLHttpRequest();
 453                 req.onreadystatechange = function() {
 454                         switch (req.readyState) {
 455                                 case 1 :
 456                                         showProgressImage();
 457                                         break;
 458                                 case 2 :
 459                                         try {
 460                                                 if (! isTextMime.exec(req.getResponseHeader('Content-Type'))) {
 461                                                         req.onreadystatechange = null;
 462                                                         req.abort();
 463                                                         hideProgressImage();
 464                                                         window.location.href = thisFS._fallBackUrl;
 465                                                 }
 466                                         }
 467                                         catch(e){}
 468                                         break;
 469                                 case 4 :
 470                                         hideProgressImage();
 471                                         if (req.status === 200) { thisFS.populateViewer(req); }
 472                                         break;
 473                         }
 474                 };
 475
 476                 req.open("GET", ajaxUrl, true);
 477                 req.send(null);
 478
 479                 // update old displayed slide className
 480                 var className = this.selectedSlide.className;
 481                 var classes = className.split(' ');
 482                 var newClasses = [];
 483                 var name, i;
 484
 485                 for (i=0 ; i<classes.length ;  i++) {
 486                         name = classes[i];
 487                         if (name !== 'displayed') {
 488                                 newClasses.push(name);
 489                         }
 490                 }
 491
 492                 this.selectedSlide.className = newClasses.join(' ');
 493
 494                 // hightlight new displayed slide
 495                 this.selectedSlide = target;
 496                 className = this.selectedSlide.className;
 497                 classes = className.split(' ');
 498                 classes.push('displayed');
 499                 this.selectedSlide.className = classes.join(' ');
 500         }
 501 };
 502
 503 FilmSlider.prototype.toolbarClickHandler = function(evt) {
 504         var target = getTargetedObject(evt);
 505         var button, link, url;
 506         if(target.tagName === 'IMG' && target.getAttribute('name')) {
 507                 switch(target.getAttribute('name')) {
 508                         case 'previous' :
 509                                 disableDefault(evt);
 510                                 disablePropagation(evt);
 511                                 button = target;
 512                                 link = button.parentNode;
 513                                 link.blur();
 514                                 this.loadSibling(true);
 515                                 break;
 516                         case 'next' :
 517                                 disableDefault(evt);
 518                                 disablePropagation(evt);
 519                                 button = target;
 520                                 link = button.parentNode;
 521                                 link.blur();
 522                                 this.loadSibling(false);
 523                                 break;
 524                         case 'full_screen':
 525                                 disableDefault(evt);
 526                                 disablePropagation(evt);
 527                                 target.parentNode.blur();
 528                                 if (this.viewMode === 'full') {
 529                                         this.mosaique.unload();
 530                                         this.mosaique = null;
 531                                         this.viewMode = 'medium';
 532                                         return;
 533                                 }
 534                                 var main = document.getElementById('photo_viewer');
 535                                 url = target.parentNode.href;
 536                                 url = url.substring(0, url.length - '/zoom_view'.length);
 537                                 var margins = {'top':0, 'right':-1, 'bottom':0, 'left':0};
 538                                 this.mosaique = new Mosaique(main, url, margins);
 539                                 this.viewMode = 'full';
 540                                 break;
 541
 542                         case 'toggle_selection':
 543                                 disableDefault(evt);
 544                                 disablePropagation(evt);
 545                                 button = target;
 546                                 link = button.parentNode;
 547                                 link.blur();
 548
 549                                 var req = new XMLHttpRequest();
 550                                 url = link.href;
 551                                 req.open("POST", url, true);
 552                                 req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
 553                                 req.send("ajax=1");
 554
 555                                 // toggle button
 556                                 var parts = url.split('/');
 557                                 var canonicalImgUrl = parts.slice(0, parts.length-1).join('/');
 558
 559                                 if (isAddToSelection.test(url)) {
 560                                         button.src = portal_url() + '/unselect_flag_btn.gif';
 561                                         button.alt = link.title = 'Retirer de la sélection';
 562                                         link.href = canonicalImgUrl + '/remove_to_selection';
 563                                         this.selectedSlide.className = 'selected displayed';
 564                                         this.image.parentNode.className = 'selected';
 565                                         this.selectedSlideInSelection = true;
 566                                 }
 567                                 else {
 568                                         button.src = portal_url() + '/select_flag_btn.gif';
 569                                         button.alt = link.title = 'Ajouter à la sélection';
 570                                         link.href = canonicalImgUrl + '/add_to_selection';
 571                                         this.selectedSlide.className = 'displayed';
 572                                         this.image.parentNode.className = '';
 573                                         this.selectedSlideInSelection = false;
 574                                 }
 575                                 break;
 576
 577                         case 'show_buyable':
 578                                 disableDefault(evt);
 579                                 disablePropagation(evt);
 580                                 button = target;
 581                                 link = button.parentNode;
 582                                 link.blur();
 583                                 var slide = this.cartSlide;
 584                                 slide.innerHTML = '';
 585                                 slide.style.visibility = 'visible';
 586                                 var cw = new CartWidget(slide, link.href);
 587                                 cw.onCancel = function() {
 588                                         CartWidget.prototype.onCancel.apply(this);
 589                                         slide.style.visibility = 'hidden';
 590                                 };
 591                                 cw.onAfterConfirm = function() {
 592                                         slide.style.visibility = 'hidden';
 593                                 };
 594                                 break;
 595
 596
 597
 598
 599                         /*
 600                         case 'edit_metadata' :
 601                                 disableDefault(evt);
 602                                 disablePropagation(evt);
 603                                 target.blur();
 604                                 if (this.viewMode === 'full') {
 605                                         this.mosaique.unload();
 606                                         this.mosaique = null;
 607                                         this.viewMode = 'medium';
 608                                         return;
 609                                 }
 610                                 var fi = new FragmentImporter(absolute_url());
 611                                 fi.useMacro('metadata_edit_form_macros', 'iptc', 'image_metadata');
 612                                 break;
 613                         */
 614                 }
 615         }
 616 };
 617
 618
 619 if(browser.isDOM2Event) {
 620         if (browser.isAppleWebKit) {
 621                 FilmSlider.prototype.mouseWheelHandler = function(evt) {
 622                         disableDefault(evt);
 623                         var pos = this.getSliderPosition();
 624                         pos.x -= evt.wheelDelta / 40;
 625                         this.setSliderPosition(pos);
 626                 };
 627         }
 628         else {
 629                 FilmSlider.prototype.mouseWheelHandler = function(evt) {
 630                         disableDefault(evt);
 631                         var pos = this.getSliderPosition();
 632                         pos.x += evt.detail * 3;
 633                         this.setSliderPosition(pos);
 634                 };
 635         }
 636 }
 637 else if (browser.isIE6up) {
 638         FilmSlider.prototype.mouseWheelHandler = function() {
 639                 var evt = window.event;
 640                 evt.returnValue = false;
 641                 var pos = this.getSliderPosition();
 642                 pos.x -= evt.wheelDelta / 40;
 643                 this.setSliderPosition(pos);
 644         };
 645 }
 646
 647 FilmSlider.prototype.touchStartHandler = function(evt) {
 648         this.filmStartX = parseInt(this.film.style.left, 10);
 649         this.touchStartX = evt.changedTouches[0].screenX;
 650         this.touchStartTime = (new Date()).getTime();
 651 };
 652
 653 FilmSlider.prototype.touchMoveHandler = function(evt) {
 654         disableDefault(evt);
 655         var delta = this.touchStartX - evt.changedTouches[0].screenX;
 656         var posX = this.filmStartX - delta;
 657         this.setFilmPosition(posX);
 658         this.lastMoveTime = (new Date()).getTime();
 659 };
 660
 661 FilmSlider.prototype.touchEndHandler = function(evt) {
 662         var x = evt.changedTouches[0].screenX;
 663         var delta = x - this.touchStartX;
 664         if (delta) {
 665                 disableDefault(evt);
 666                 var now = (new Date()).getTime();
 667                 if (now - this.lastMoveTime < 100) {
 668                         // au delà de 100 ms de maintient, on annule l'inertie
 669                         var speed = delta / (now - this.touchStartTime);
 670                         var x0 = parseInt(this.film.style.left, 10);
 671                         var t0 = (new Date()).getTime();
 672                         var d = 500; // milisecondes
 673                         delta = 0;
 674                         var dt = 25;
 675                         var self = this;
 676
 677                         var animate = function() {
 678                                 // inertie
 679                                 var t = (new Date()).getTime() - t0;
 680                                 if (t < d) {
 681                                         setTimeout(animate, dt);
 682                                         delta = delta + (1-t/d) * speed * dt; // décelleration linéaire
 683                                         self.setFilmPosition(x0 + delta);
 684                                 }
 685                         };
 686                         animate();
 687                 }
 688         }
 689         this.touchStartX = undefined;
 690 };
 691
 692
 693 FilmSlider.prototype.keyDownHandler = function(evt) {
 694         evt = getEventObject(evt);
 695         switch (evt.keyCode) {
 696                 case keyLeft :
 697                         this.loadSibling(true);
 698                         break;
 699                 case keyRight :
 700                         this.loadSibling(false);
 701                         break;
 702                 default:
 703                         return;
 704         }
 705 };
 706
 707
 708 FilmSlider.prototype.keyPressHandler = function(evt) {
 709         var target = getTargetedObject(evt);
 710         if (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA') { return; }
 711         evt = getEventObject(evt);
 712         var charPress = String.fromCharCode((evt.keyCode) ? evt.keyCode : evt.which);
 713         switch(charPress) {
 714                 case 'f':
 715                 case 'F':
 716                         raiseMouseEvent(this.buttons.full_screen, 'click');
 717                         break;
 718         }
 719 };
 720
 721 FilmSlider.prototype.populateViewer = function(req) {
 722         var elements = req.responseXML.documentElement.childNodes;
 723         var i;
 724         for(i=0 ; i < elements.length ; i++ ) {
 725                 element = elements[i];
 726                 switch (element.nodeName) {
 727                         case 'fragment' :
 728                                 var dest = document.getElementById(element.getAttribute('id'));
 729                                 if (dest) { dest.innerHTML = element.firstChild.nodeValue; }
 730                                 break;
 731                         case 'imageattributes' :
 732                                 var link = this.buttons.back_to_portfolio.parentNode;
 733                                 link.href = element.getAttribute('back_to_context_url');
 734                                 link = this.buttons.show_buyable.parentNode;
 735                                 var buyable = element.getAttribute('buyable');
 736                                 if(buyable === 'True') { link.className = null; }
 737                                 else if(buyable === 'False') { link.className = 'hidden'; }
 738                                 this.image.alt = element.getAttribute('alt');
 739                                 this.updateBreadcrumbs(element.getAttribute('last_bc_url'),
 740                                                                            element.getAttribute('img_id'));
 741                                 break;
 742                 }
 743         }
 744 };
 745
 746 FilmSlider.prototype.refreshImage = function() {
 747         var dispWidth = getObjectWidth(this.stretchable);
 748         var imgWidth = this.pendingImage.width;
 749         var dispHeight = getObjectHeight(this.stretchable);
 750         var imgHeight = this.pendingImage.height;
 751         var ratio;
 752
 753         if (imgHeight > dispHeight) {
 754                 ratio = dispHeight / imgHeight;
 755                 imgWidth = imgWidth * ratio;
 756                 imgHeight = dispHeight;
 757         }
 758         if (imgWidth > dispWidth) {
 759                 ratio = dispWidth / imgWidth;
 760                 imgHeight = imgHeight * ratio;
 761                 imgWidth = dispWidth;
 762         }
 763
 764         this.image.style.visibility = 'hidden';
 765         this.image.src = this.pendingImage.src;
 766         this.image.width = imgWidth;
 767         this.image.height = imgHeight;
 768         this.image.style.visibility = 'visible';
 769         if (this.selectedSlideInSelection) { this.image.parentNode.className = 'selected'; }
 770         else { this.image.parentNode.className = ''; }
 771 };
 772
 773 FilmSlider.prototype.updateBreadcrumbs = function(url, title) {
 774         if (this.hasBreadcrumbs) {
 775                 this.lastBCElement.href = url;
 776                 this.lastBCElement.innerHTML = title;
 777         }
 778 };
 779
 780 FilmSlider.prototype.startThumbnailsLoadQueue = function(evt) {
 781         var thumbnails = this.film.getElementsByTagName('img');
 782         if (thumbnails.length === 1) { return; }
 783         this.thumbnailsLoadingOrder = [];
 784         var leftSize = this.center;
 785         var rightSize = thumbnails.length - this.center - 1;
 786         var i;
 787         for (i=1 ; i<=Math.min(leftSize, rightSize) ; i++) {
 788                 this.thumbnailsLoadingOrder.push(thumbnails[this.center + i]);
 789                 this.thumbnailsLoadingOrder.push(thumbnails[this.center - i]);
 790         }
 791         if (leftSize > rightSize) {
 792                 for (i = this.center - rightSize - 1 ; i >= 0 ; i--) {
 793                         this.thumbnailsLoadingOrder.push(thumbnails[i]);
 794                 }
 795         }
 796         else if (leftSize < rightSize) {
 797                 for (i = this.center + leftSize + 1 ; i < thumbnails.length ; i++) {
 798                         this.thumbnailsLoadingOrder.push(thumbnails[i]);
 799                 }
 800         }
 801         var next = this.thumbnailsLoadingOrder.shift();
 802         var self = this;
 803         addListener(next, 'load', function(evt){self._loadNextThumb(evt);});
 804         next.src = this.translateImgUrl(next.parentNode.href) + '/getThumbnail';
 805 };
 806
 807 FilmSlider.prototype._loadNextThumb = function(evt) {
 808         var next = this.thumbnailsLoadingOrder.shift();
 809         if (!next) {return;}
 810         var self = this;
 811         addListener(next, 'load', function(evt){self._loadNextThumb(evt);});
 812         next.src = this.translateImgUrl(next.parentNode.href) + '/getThumbnail';
 813 };
 814
 815
 816 FilmSlider.prototype.startSlideShow = function() {
 817         this.slideShowSlide = this.pendingSlideShowSlide = this.selectedSlide;
 818         return this.slideShowSlide.href;
 819 };
 820
 821 FilmSlider.prototype.slideShowNext = function() {
 822         var nextSlide = this.slideShowSlide.parentNode.nextSibling;
 823         if (nextSlide && nextSlide.nodeType===3) { nextSlide = nextSlide.nextSibling; }
 824
 825         if (nextSlide) {
 826                 nextSlide = nextSlide.getElementsByTagName('a')[0];
 827                 this.pendingSlideShowSlide = nextSlide;
 828                 return this.pendingSlideShowSlide.href;
 829         }
 830         else {
 831                 var row = this.slideShowSlide.parentNode.parentNode;
 832                 var first = row.firstChild;
 833                 if (first.nodeType===3) { first = first.nextSibling; }
 834                 this.pendingSlideShowSlide = first.getElementsByTagName('a')[0];
 835                 return this.pendingSlideShowSlide.href;
 836         }
 837 };
 838
 839 FilmSlider.prototype.slideShowPrevious = function() {
 840         var previousSlide = this.slideShowSlide.parentNode.previousSibling;
 841         if (previousSlide && previousSlide.nodeType===3) { previousSlide = previousSlide.previousSibling; }
 842
 843         if (previousSlide) {
 844                 previousSlide = previousSlide.getElementsByTagName('a')[0];
 845                 this.pendingSlideShowSlide = previousSlide;
 846                 return this.pendingSlideShowSlide.href;
 847         }
 848         else {
 849                 var row = this.slideShowSlide.parentNode.parentNode;
 850                 var last = row.lastChild;
 851                 if (last.nodeType===3) { last = last.previousSibling; }
 852                 this.pendingSlideShowSlide = last.getElementsByTagName('a')[0];
 853                 return this.pendingSlideShowSlide.href;
 854         }
 855 };
 856
 857 FilmSlider.prototype.slideShowImageLoaded = function() {
 858         this.slideShowSlide = this.pendingSlideShowSlide;
 859 };
 860
 861 FilmSlider.prototype.stopSlideShow = function() {
 862         raiseMouseEvent(this.slideShowSlide, 'click');
 863         var index = parseInt(this.selectedSlide.getAttribute('portfolio:position'), 10);
 864         this.centerSlide(index);
 865 };
 866
 867
 868 /* UTILS */
 869 function Point(x, y) {
 870         this.x = Math.round(x);
 871         this.y = Math.round(y);
 872 }
 873 Point.prototype.diff = function(point) { return new Point(this.x - point.x, this.y - point.y); };
 874 Point.prototype.add = function(point) { return new Point(this.x + point.x, this.y + point.y); };
 875 Point.prototype.mul = function(k) { return new Point(this.x * k, this.y *k); };
 876 Point.prototype.toString = function() { return "(" + String(this.x) + ", " + String(this.y) + ")"; };
 877
 878 }());