forked from rebillar/site-accueil-insa
276 lines
8 KiB
JavaScript
Executable file
276 lines
8 KiB
JavaScript
Executable file
let showcase = $("#imgBig");
|
|
let showcaseButtonContainer = $("#photoButtonsContainer");
|
|
let showcaseDownload = $("#downloadButton");
|
|
let photoOverlay = $("#photoOverlay");
|
|
let headerTop = $("#header-top");
|
|
let sideNav = $("#menuSidenav");
|
|
let loading = $("#loadingIconContainer");
|
|
let move_photo = false;
|
|
let grab_offsetX = 0;
|
|
let grab_offsetY = 0;
|
|
|
|
let idle_time = 0;
|
|
let isMobile = window.matchMedia("only screen and (max-width: 480px)").matches;
|
|
let isMouseOverButtons = false;
|
|
|
|
$(document).ready(
|
|
function () {
|
|
showcase.bind("mousewheel", function(event, delta) {
|
|
let min_width = $(window).width() / 5;
|
|
let min_height = $(window).height() / 5;
|
|
let max_width = $(window).width() * 5;
|
|
let max_height = $(window).height() * 5;
|
|
|
|
let scale = 150 / 100;
|
|
if (delta < 0)
|
|
scale = 1/scale;
|
|
let cursorY = event.pageY - $(window).scrollTop();
|
|
let offsetX = event.pageX - (showcase.position().left + showcase.width()/2);
|
|
let offsetY = cursorY - (showcase.position().top + showcase.height()/2);
|
|
|
|
let new_width = showcase.width() * scale;
|
|
let new_height = showcase.height() * scale;
|
|
if (new_width > max_width || new_width < min_width)
|
|
new_width = 0;
|
|
if (new_height > max_height || new_height < min_height)
|
|
new_height = 0;
|
|
|
|
if (new_width !== 0 && new_height !== 0){
|
|
let new_left = event.pageX - (offsetX * scale);
|
|
let new_top = cursorY - (offsetY * scale);
|
|
|
|
showcase.width(new_width);
|
|
showcase.height(new_height);
|
|
|
|
if (new_height > $(window).height() || new_width > $(window).width()){
|
|
showcase.css('left', new_left +'px');
|
|
showcase.css('top', new_top +'px');
|
|
showcase.css('cursor', 'move');
|
|
}
|
|
else{
|
|
showcase.css('left', $(window).width()/2 +'px');
|
|
showcase.css('top', $(window).height()/2 +'px');
|
|
showcase.css('cursor', 'default');
|
|
}
|
|
}
|
|
return false;
|
|
});
|
|
document.getElementById("photosTitle").scrollIntoView();
|
|
showcase.on('dragstart', function(event) { event.preventDefault(); }); // Stop image drag out of page
|
|
if (!isMobile)
|
|
setInterval(timerIncrement, 100);
|
|
}
|
|
);
|
|
|
|
$(document).mousemove(function (event) {
|
|
let cursorY = event.pageY - $(window).scrollTop();
|
|
let elem = document.elementFromPoint(event.pageX, cursorY);
|
|
isMouseOverButtons = !(elem.id === "closeBack" || elem.id === "loadingIconContainer" || elem.id === showcase.attr('id')); // Prevent entering fullscreen when cursor on control buttons
|
|
idle_time = 0;
|
|
});
|
|
|
|
showcase.mousemove(function(event){
|
|
if (showcase.height() > $(window).height() || showcase.width() > $(window).width) {
|
|
showcase.css('cursor', 'move');
|
|
if (move_photo){
|
|
let cursorY = event.pageY - $(window).scrollTop();
|
|
let offsetX = event.pageX - (showcase.position().left + showcase.width()/2);
|
|
let offsetY = cursorY - (showcase.position().top + showcase.height()/2);
|
|
|
|
let new_left = showcase.position().left + showcase.width()/2 + offsetX - grab_offsetX;
|
|
let new_top = showcase.position().top + showcase.height()/2 + offsetY - grab_offsetY;
|
|
|
|
showcase.css('left', new_left +'px');
|
|
showcase.css('top', new_top +'px');
|
|
}
|
|
}
|
|
else{
|
|
showcase.css('cursor', 'default');
|
|
}
|
|
});
|
|
|
|
showcase.mousedown(function(event){
|
|
move_photo = true;
|
|
let cursorY = event.pageY - $(window).scrollTop();
|
|
grab_offsetX = event.pageX - (showcase.position().left + showcase.width()/2);
|
|
grab_offsetY = cursorY - (showcase.position().top + showcase.height()/2);
|
|
|
|
if (isMobile)
|
|
toggleFullscreen();
|
|
});
|
|
|
|
showcase.mouseup(function(){
|
|
move_photo = false;
|
|
});
|
|
|
|
showcase.mouseleave(function(){
|
|
move_photo = false;
|
|
});
|
|
|
|
|
|
/*
|
|
* Display selected image in showcase
|
|
* When clicked, display image in full size
|
|
*/
|
|
function displayBig(elem) {
|
|
isMouseOverButtons = false; // Allow fullscreen when clicking on an image without mouving the mouse
|
|
changeImage($(elem).attr('src'));
|
|
hideTopBar();
|
|
disableFullscreen();
|
|
photoOverlay.fadeIn(500);
|
|
$('body').css('overflow', 'hidden');
|
|
}
|
|
|
|
function getSourceFromThumbnail(source) {
|
|
return source.replace("photos_thumb/", "photos/");
|
|
}
|
|
|
|
function getThumbnailFromSource(source) {
|
|
return source.replace("photos/", "photos_thumb/");
|
|
}
|
|
|
|
/*
|
|
* Hide showcase image
|
|
*/
|
|
function closeBig() {
|
|
showTopBar();
|
|
disableFullscreen();
|
|
photoOverlay.fadeOut(500);
|
|
$('body').css('overflow', 'auto');
|
|
scrollToShowcaseImage();
|
|
}
|
|
|
|
|
|
function scrollToShowcaseImage() {
|
|
let source = showcase.attr('src');
|
|
let image = $("img[src$='" + getThumbnailFromSource(source) + "']");
|
|
if (image !== undefined) {
|
|
image.get(0).scrollIntoView();
|
|
}
|
|
}
|
|
|
|
|
|
function enableFullscreen() {
|
|
showcaseButtonContainer.fadeOut(500);
|
|
}
|
|
|
|
function disableFullscreen() {
|
|
showcaseButtonContainer.fadeIn(500);
|
|
}
|
|
|
|
function toggleFullscreen() {
|
|
if (isFullscreen())
|
|
disableFullscreen();
|
|
else
|
|
enableFullscreen();
|
|
}
|
|
|
|
function hideTopBar() {
|
|
headerTop.fadeOut(500);
|
|
sideNav.fadeOut(500);
|
|
}
|
|
|
|
function showTopBar() {
|
|
headerTop.fadeIn(500);
|
|
sideNav.fadeIn(500);
|
|
}
|
|
|
|
function isFullscreen(){
|
|
return showcaseButtonContainer.css("display") === "none";
|
|
}
|
|
|
|
|
|
function timerIncrement() {
|
|
if (isMouseOverButtons)
|
|
idle_time = 0;
|
|
else
|
|
idle_time = idle_time+ 1;
|
|
if (idle_time > 10 && !isFullscreen()) { // 1 second
|
|
enableFullscreen();
|
|
} else if (idle_time <= 10 && isFullscreen()){
|
|
disableFullscreen();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Control images with keyboard arrows
|
|
*/
|
|
$(document).keydown(function (e) {
|
|
switch (e.keyCode) {
|
|
case 37: // left
|
|
displayNext(-1);
|
|
break;
|
|
case 39: // right
|
|
displayNext(1);
|
|
break;
|
|
case 27: // escape
|
|
closeBig();
|
|
break;
|
|
default:
|
|
return; // exit this handler for other keys
|
|
}
|
|
e.preventDefault(); // prevent the default action (scroll / move caret)
|
|
});
|
|
|
|
|
|
/*
|
|
* Display next/last image in showcase. When reaching end/start, loop back to start/end
|
|
*/
|
|
function displayNext(direction) {
|
|
let currentSrc = showcase.attr('src');
|
|
let photos = document.getElementsByClassName("photo");
|
|
let current = 0;
|
|
for (let i = 0; i < photos.length; i++) {
|
|
if (getSourceFromThumbnail($(photos[i]).attr('src')) === currentSrc) {
|
|
current = i;
|
|
}
|
|
}
|
|
let next = current + direction;
|
|
let nextId = "";
|
|
if (direction > 0) {
|
|
nextId = "#photo-0";
|
|
} else {
|
|
nextId = "#photo-" + (photos.length - 1);
|
|
}
|
|
if (document.getElementById("photo-" + next) != null) {
|
|
nextId = "#photo-" + next;
|
|
}
|
|
let nextSrc = $(nextId).attr('src');
|
|
changeImage(nextSrc);
|
|
}
|
|
|
|
/*
|
|
* Change image source, link and download
|
|
*/
|
|
function changeImage(thumb) {
|
|
displayLoading();
|
|
showcase.css('display', 'none');
|
|
showcase.on('load', function () {
|
|
hideLoading();
|
|
showcase.css('display', 'block');
|
|
if ($(showcase).width() > $(window).width()){ // prevent display problems on portait devices
|
|
let scale = $(window).width() * 0.9 / $(showcase).width();
|
|
$(showcase).width(scale*$(showcase).width());
|
|
$(showcase).height(scale*$(showcase).height());
|
|
}
|
|
});
|
|
let source = getSourceFromThumbnail(thumb);
|
|
showcase.attr("src", source);
|
|
showcase.css({
|
|
width: 'auto',
|
|
height: '90%',
|
|
});
|
|
showcase.css('left', $(window).width()/2 +'px');
|
|
showcase.css('top', $(window).height()/2 +'px');
|
|
showcaseDownload.attr("href", source);
|
|
|
|
}
|
|
|
|
|
|
function displayLoading() {
|
|
loading.show();
|
|
}
|
|
|
|
function hideLoading() {
|
|
loading.fadeOut(200);
|
|
}
|