X-Git-Url: https://scm.cri.mines-paristech.fr/git/Portfolio.git/blobdiff_plain/320341dca66e5887ba1da118138693fc161074a0..1ea27804743fca19dca58a1f8e662ccf7787f652:/skins/photo_film_viewer.js

diff --git a/skins/photo_film_viewer.js b/skins/photo_film_viewer.js
index ff8d61e..c6f583b 100644
--- a/skins/photo_film_viewer.js
+++ b/skins/photo_film_viewer.js
@@ -5,7 +5,6 @@ Licence Creative Commons http://creativecommons.org/licenses/by-nc/2.0/
 */
 
 var FilmSlider;
-
 (function(){
 
 var keyLeft = 37, keyRight = 39;
@@ -83,38 +82,45 @@ FilmSlider = function(filmBar, slider, ctxInfos, image, toolbar, breadcrumbs) {
 };
 
 if (!browser.isMobile) {
-FilmSlider.prototype.resizeSlider = function(evt) {
-	var filmBarWidth = this.filmBarWidth;
-	if (!filmBarWidth) { return; }
-	var filmWidth = this.slideSize * this.filmLength;
-	var sliderRatio = this.sliderRatio =  filmBarWidth / filmWidth;
-	var sliderWidth = filmBarWidth * sliderRatio;
-	this.rail.style.width = filmBarWidth + 'px';
-	this.rail.style.display = 'block';
-	this.rail.style.visibility = 'visible';
-	if (sliderRatio < 1) {
-		this.slider.style.width = Math.round(sliderWidth) + 'px';
-		this.slider.style.visibility = 'visible';
-	}
-	else {
-		this.slider.style.visibility = 'hidden';
-	}
+	FilmSlider.prototype.resizeSlider = function(evt) {
+		var filmBarWidth = this.filmBarWidth;
+		if (!filmBarWidth) { return; }
+		var filmWidth = this.slideSize * this.filmLength;
+		var sliderRatio = this.sliderRatio =  filmBarWidth / filmWidth;
+		var sliderWidth = filmBarWidth * sliderRatio;
+		this.rail.style.width = filmBarWidth + 'px';
+		this.rail.style.display = 'block';
+		this.rail.style.visibility = 'visible';
+		if (sliderRatio < 1) {
+			this.slider.style.width = Math.round(sliderWidth) + 'px';
+			this.slider.style.visibility = 'visible';
+		}
+		else {
+			this.slider.style.visibility = 'hidden';
+		}
 	
-	this.winSize = {'width'	 : getWindowWidth(),
-					'height' : getWindowHeight()};
-	this.maxRightPosition = filmBarWidth - sliderWidth;
-	this.sliderSpeedRatio = - (filmBarWidth - sliderWidth) / (filmWidth - filmBarWidth);
-	if (!this.initialized) {
-		this.centerSlide(this.center);
-		this.selectedSlide = this.filmBar.getElementsByTagName('img')[this.center].parentNode;
-		this.initialized = true;
-	}
-};
+		this.winSize = {'width'	 : getWindowWidth(),
+						'height' : getWindowHeight()};
+		this.maxRightPosition = filmBarWidth - sliderWidth;
+		this.sliderSpeedRatio = - (filmBarWidth - sliderWidth) / (filmWidth - filmBarWidth);
+		if (!this.initialized) {
+			this.centerSlide(this.center);
+			this.selectedSlide = this.filmBar.getElementsByTagName('img')[this.center].parentNode;
+			this.initialized = true;
+		}
+	};
 }
 
 else {
 	// pas de barre de scroll horizontal pour les tablettes
-	FilmSlider.prototype.resizeSlider = function(evt) {};
+	FilmSlider.prototype.resizeSlider = function(evt) {
+		this.filmMaxX = - (getObjectWidth(this.film) - this.filmBarWidth);
+		if (!this.initialized) {
+			this.centerSlide(this.center);
+			this.selectedSlide = this.filmBar.getElementsByTagName('img')[this.center].parentNode;
+			this.initialized = true;
+		}
+	};
 }
 
 FilmSlider.prototype._checkSizeAfterLoad = function(evt) {
@@ -139,10 +145,11 @@ FilmSlider.prototype._checkSize = function(evt) {
 FilmSlider.prototype._checkSizeStability = function(evt) {
 	var self = this;
 	var i;
+	var checkAgain = function(evt){self._checkSizeStability();};
 	for (i=0 ; i<this._barSizes.length - 1 ; i++) {
 		if (this._barSizes[i] !== this._barSizes[i+1]) {
 			this._barSizes = [];
-			setTimeout(function(evt){self._checkSizeStability();}, 250);
+			setTimeout(checkAgain, 250);
 			return;
 		}
 	}
@@ -159,11 +166,12 @@ FilmSlider.prototype.fitToScreen = function(evt) {
 
 FilmSlider.prototype._fitToScreen = function(evt) {
 	var wh = getWindowHeight();
+	var rb;
 	if (!browser.isMobile) {
-	var rb = getObjectTop(this.rail) + getObjectHeight(this.rail); // rail bottom
+		rb = getObjectTop(this.rail) + getObjectHeight(this.rail); // rail bottom
 	}
 	else {
-		var rb = getObjectTop(this.filmBar) + getObjectHeight(this.filmBar); // film bottom
+		rb = getObjectTop(this.filmBar) + getObjectHeight(this.filmBar); // film bottom
 	}
 	var delta = wh - rb;
 	var sh = getObjectHeight(this.stretchable);
@@ -177,6 +185,7 @@ FilmSlider.prototype._fitToScreen = function(evt) {
 		var src = this.image.src.replace(imgRequestedSize, 'size=' + bestFitSize);
 		this.pendingImage.src = src;
 	}
+	this.adjustImage(this.image);
 };
 
 FilmSlider.prototype.getBestFitSize = function(ratio) {
@@ -201,16 +210,47 @@ FilmSlider.prototype.getBestFitSize = function(ratio) {
 	return DEFAULT_IMAGE_SIZES[i];
 };
 
-FilmSlider.prototype.centerSlide = function(slideIndex) {
-	if (this.sliderRatio > 1) { return; }
-	var filmBarWidth = getObjectWidth(this.filmBar);
-	var x = slideIndex * this.slideSize;
-	x = x - (filmBarWidth - this.slideSize) / 2.0;
-	x = x * this.sliderSpeedRatio;
-	var p = new Point( -x, 0 );
-	this.setSliderPosition(p);
+FilmSlider.prototype.adjustImage = function(img) {
+	var dispWidth = parseInt(this.stretchable.style.width);
+	var imgWidth = img.naturalWidth;
+	var dispHeight = parseInt(this.stretchable.style.height);
+	var imgHeight = img.naturalHeight;
+	var ratio;
+
+	if (imgHeight > dispHeight) {
+		ratio = dispHeight / imgHeight;
+		imgWidth = imgWidth * ratio;
+		imgHeight = dispHeight;
+	}
+	if (imgWidth > dispWidth) {
+		ratio = dispWidth / imgWidth;
+		imgHeight = imgHeight * ratio;
+		imgWidth = dispWidth;
+	}
+	img.width = imgWidth;
+	img.height = imgHeight;
 };
 
+if (!browser.isMobile) {
+	FilmSlider.prototype.centerSlide = function(slideIndex) {
+		if (this.sliderRatio > 1) { return; }
+		var filmBarWidth = getObjectWidth(this.filmBar);
+		var x = slideIndex * this.slideSize;
+		x = x - (filmBarWidth - this.slideSize) / 2.0;
+		x = x * this.sliderSpeedRatio;
+		var p = new Point( -x, 0 );
+		this.setSliderPosition(p);
+	};
+}
+else {
+	FilmSlider.prototype.centerSlide = function(slideIndex) {
+		var filmBarWidth = getObjectWidth(this.filmBar);
+		var x = slideIndex * this.slideSize;
+		x = x - (filmBarWidth - this.slideSize) / 2.0;
+		this.setFilmPosition(-x);
+	};
+}
+
 FilmSlider.prototype.setSliderPosition = function(point) {
 	if(point.x < 0) { point.x = 0; }
 	if (point.x > this.maxRightPosition) { point.x = this.maxRightPosition; }
@@ -218,9 +258,18 @@ FilmSlider.prototype.setSliderPosition = function(point) {
 	this.setFilmPosition(point);
 };
 
-FilmSlider.prototype.setFilmPosition = function(point) {
-	this.film.style.left = point.x / this.sliderSpeedRatio + 'px';
-};
+if (!browser.isMobile) {
+	FilmSlider.prototype.setFilmPosition = function(point) {
+		this.film.style.left = point.x / this.sliderSpeedRatio + 'px';
+	};
+}
+else {
+	FilmSlider.prototype.setFilmPosition = function(x) {
+		x = Math.min(0, x);
+		x = Math.max(this.filmMaxX, x);
+		this.film.style.left = String(x) + 'px';
+	};
+}
 
 FilmSlider.prototype.getSliderPosition = function() {
 	var x = parseInt(this.slider.style.left, 10);
@@ -263,6 +312,7 @@ FilmSlider.prototype.addEventListeners = function() {
 	addListener(this.toolbar, 'click', function(evt){thisSlider.toolbarClickHandler(evt);});
 	addListener(window, 'load', function(evt){thisSlider.fitToScreen(evt);});
 	addListener(window, 'load', function(evt){thisSlider._checkSizeAfterLoad(evt);});
+	addListener(window, 'load', function(evt){thisSlider.startThumbnailsLoadQueue(evt);});
 	
 	// dd listeners
 	addListener(this.slider, 'mousedown', this.ddHandlers.down);
@@ -328,6 +378,18 @@ FilmSlider.prototype.mouseOutHandler = function(evt) {
 	}
 };
 
+FilmSlider.prototype.translateImgUrl = function(url) {
+	var canonicalImgUrl;
+	if (this.ctxUrlTranslation[0]) {
+		canonicalImgUrl = url.replace(this.ctxUrlTranslation[0],
+									  this.ctxUrlTranslation[1]);
+	}
+	else {
+		canonicalImgUrl = url;
+	}
+	return canonicalImgUrl;
+};
+
 FilmSlider.prototype.thumbnailClickHandler = function(evt) {
 	var target = getTargetedObject(evt);
 	while (target.tagName !== 'A' && target !== this.filmBar) { target = target.parentNode; }
@@ -344,12 +406,7 @@ FilmSlider.prototype.thumbnailClickHandler = function(evt) {
 		history.pushState(target.href, '', target.href);
 		
 		var imgBaseUrl = target.href;
-		var canonicalImgUrl;
-		if (this.ctxUrlTranslation[0]) {
-			canonicalImgUrl = imgBaseUrl.replace(this.ctxUrlTranslation[0],
-												 this.ctxUrlTranslation[1]);
-		}
-		else { canonicalImgUrl = imgBaseUrl; }
+		var canonicalImgUrl = this.translateImgUrl(imgBaseUrl);
 		
 		var ajaxUrl = imgBaseUrl + '/photo_view_ajax';
 		var thisFS = this;
@@ -587,15 +644,46 @@ else if (browser.isIE6up) {
 
 FilmSlider.prototype.touchStartHandler = function(evt) {
 	this.filmStartX = parseInt(this.film.style.left, 10);
-	this.touchStartX = evt.pageX;
+	this.touchStartX = evt.changedTouches[0].screenX;
+	this.touchStartTime = (new Date()).getTime();
 };
 
 FilmSlider.prototype.touchMoveHandler = function(evt) {
-	var delta = this.touchStartX - evt.pageX;
-	this.film.style.left = String(this.filmStartX - delta) + 'px';
+	disableDefault(evt);
+	var delta = this.touchStartX - evt.changedTouches[0].screenX;
+	var posX = this.filmStartX - delta;
+	this.setFilmPosition(posX);
+	this.lastMoveTime = (new Date()).getTime();
 };
 
 FilmSlider.prototype.touchEndHandler = function(evt) {
+	var x = evt.changedTouches[0].screenX;
+	var delta = x - this.touchStartX;
+	if (delta) {
+		disableDefault(evt);
+		var now = (new Date()).getTime();
+		if (now - this.lastMoveTime < 100) {
+			// au delà de 100 ms de maintient, on annule l'inertie
+			var speed = delta / (now - this.touchStartTime);
+			var x0 = parseInt(this.film.style.left, 10);
+			var t0 = (new Date()).getTime();
+			var d = 500; // milisecondes
+			delta = 0;
+			var dt = 25;
+			var self = this;
+	
+			var animate = function() {
+				// inertie
+				var t = (new Date()).getTime() - t0;
+				if (t < d) {
+					setTimeout(animate, dt);
+					delta = delta + (1-t/d) * speed * dt; // décelleration linéaire
+					self.setFilmPosition(x0 + delta);
+				}
+			};
+			animate();
+		}
+	}
 	this.touchStartX = undefined;
 };
 
@@ -654,6 +742,7 @@ FilmSlider.prototype.populateViewer = function(req) {
 };
 
 FilmSlider.prototype.refreshImage = function() {
+	this.adjustImage(this.pendingImage);
 	this.image.style.visibility = 'hidden';
 	this.image.src = this.pendingImage.src;
 	this.image.width = this.pendingImage.width;
@@ -665,11 +754,47 @@ FilmSlider.prototype.refreshImage = function() {
 
 FilmSlider.prototype.updateBreadcrumbs = function(url, title) {
 	if (this.hasBreadcrumbs) {
-		this.lastBCElement.href = element.getAttribute('lastBcUrl');
-		this.lastBCElement.innerHTML = element.getAttribute('img_id');
+		this.lastBCElement.href = url;
+		this.lastBCElement.innerHTML = title;
 	}
 };
 
+FilmSlider.prototype.startThumbnailsLoadQueue = function(evt) {
+	var thumbnails = this.film.getElementsByTagName('img');
+	if (thumbnails.length === 1) { return; }
+	this.thumbnailsLoadingOrder = [];
+	var leftSize = this.center;
+	var rightSize = thumbnails.length - this.center - 1;
+	var i;
+	for (i=1 ; i<=Math.min(leftSize, rightSize) ; i++) {
+		this.thumbnailsLoadingOrder.push(thumbnails[this.center + i]);
+		this.thumbnailsLoadingOrder.push(thumbnails[this.center - i]);
+	}
+	if (leftSize > rightSize) {
+		for (i = this.center - rightSize - 1 ; i >= 0 ; i--) {
+			this.thumbnailsLoadingOrder.push(thumbnails[i]);
+		}
+	}
+	else if (leftSize < rightSize) {
+		for (i = this.center + leftSize + 1 ; i < thumbnails.length ; i++) {
+			this.thumbnailsLoadingOrder.push(thumbnails[i]);
+		}
+	}
+	var next = this.thumbnailsLoadingOrder.shift();
+	var self = this;
+	addListener(next, 'load', function(evt){self._loadNextThumb(evt);});
+	next.src = this.translateImgUrl(next.parentNode.href) + '/getThumbnail';
+};
+
+FilmSlider.prototype._loadNextThumb = function(evt) {
+	var next = this.thumbnailsLoadingOrder.shift();
+	if (!next) {return;}
+	var self = this;
+	addListener(next, 'load', function(evt){self._loadNextThumb(evt);});
+	next.src = this.translateImgUrl(next.parentNode.href) + '/getThumbnail';
+};
+
+
 FilmSlider.prototype.startSlideShow = function() {
 	this.slideShowSlide = this.pendingSlideShowSlide = this.selectedSlide;
 	return this.slideShowSlide.href;