site-accueil-insa/assets/scripts/photosScript.js

55 lines
1.3 KiB
JavaScript

var showcase = $("#img_big");
var showcaseLink = $("#img_big_link");
var photoBackButton = $("#photo_back_button");
/*
* Display selected image in showcase
* When clicked, display image in full size
*/
function displayBig(elem) {
changeImage($(elem).attr('src'));
photoBackButton.css("display", "block");
}
/*
* Hide showcase image
*/
function closeBig() {
photoBackButton.css("display", "none")
}
/*
* Display next/last image in showcase. When reaching end/start, loop back to start/end
*/
function displayNext(direction) {
var currentSrc = showcase.attr('src');
var photos = document.getElementsByClassName("photo");
var current = 0;
for (i = 0; i < photos.length; i++) {
if ($(photos[i]).attr('src') == currentSrc) {
current = i;
}
}
var next = current + direction;
var nextId = "";
if (direction > 0) {
nextId = "#photo-0";
} else {
nextId = "#photo-" + (photos.length - 1);
}
if (document.getElementById("photo-" + next) != null) {
nextId = "#photo-" + next;
}
var nextSrc = $(nextId).attr('src');
changeImage(nextSrc);
}
/*
* Change image source and link
*/
function changeImage(src) {
showcase.attr("src", src);
showcaseLink.attr("href", src);
}