X-Git-Url: https://svn.cri.ensmp.fr/git/Portfolio.git/blobdiff_plain/1a28edcbf9b0c46fbab9bcc9fff0b065349f8f24..4d5ba04bc322584f7837abf736eb9e414bfc0e44:/skins/photo_film_viewer.js

diff --git a/skins/photo_film_viewer.js b/skins/photo_film_viewer.js
index 566984a..0b1fde3 100644
--- a/skins/photo_film_viewer.js
+++ b/skins/photo_film_viewer.js
@@ -114,7 +114,14 @@ if (!browser.isMobile) {
 
 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) {
@@ -201,15 +208,25 @@ 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);
-};
+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; }
@@ -218,9 +235,18 @@ 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);
@@ -587,16 +613,46 @@ 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;
-	var posX = Math.min(0, this.filmStartX - delta);
-	this.film.style.left = String(posX) + '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
+            var delta = 0;
+            var dt = 25
+    		var self = this;
+	
+    		function animate() {
+                // 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;
 };