FEWD-CTEC3905/js/scripts.js

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JavaScript
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console.log("hello");
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// COLOUR PICKER BACKGROUND
function changeBackground(R, G, B) {
const colours = [
[255, 255, 255],
[210, 100, 110],
[90, 65, 125],
[210, 160, 100],
[220, 100, 15],
[210, 15, 0],
[100, 125, 150],
[100, 140, 90],
[20, 40, 20],
[220, 140, 180],
[0, 0, 0],
[0, 140, 220],
[0, 255, 160],
[60, 90, 20]
]
let closestDistance = 500;
let closest = 0;
for (let i = 0; i < colours.length; i++) {
distance = Math.abs(R - colours[i][0]) +
Math.abs(G - colours[i][1]) +
Math.abs(B - colours[i][2]);
if (distance < closestDistance) {
closestDistance = distance;
closest = i;
}
}
switch (closest) {
case 0:
transitionFog();
break;
case 1:
transitionSunset();
break;
case 2:
transitionSunsetPurple();
break;
case 3:
transitionSunsetYellow();
break;
case 4:
transitionRoadOrange();
break;
case 5:
transitionRoadRed();
break;
case 6:
transitionClouds();
break;
case 7:
transitionForest();
break;
case 8:
transitionAvenue();
break;
case 9:
transitionMountain();
break;
case 10:
transitionGalaxy();
break;
case 11:
transitionThunderstorm();
break;
case 12:
transitionAurora();
break;
case 13:
transitionLake();
break;
default:
transitionFog();
break;
}
}
bgColour.addEventListener("input", () => {
const R = parseInt(bgColour.value.substring(1, 3), 16);
const G = parseInt(bgColour.value.substring(3, 5), 16);
const B = parseInt(bgColour.value.substring(5, 7), 16);
changeBackground(R, G, B);
localStorage.setItem("bgColour", bgColour.value);
document.documentElement.style.setProperty("--bgColor", bgColour.value);
});
function transitionBackground(newUrl, blackwhite) {
const background = document.getElementById("background");
const transitionLayer = document.getElementById("background-transition");
const title = document.getElementById("titleBanner");
transitionLayer.removeEventListener("transitionend", () => {});
title.className = blackwhite;
transitionLayer.style.background = `url(${newUrl}) 50% 50% / cover`;
transitionLayer.style.display = "block";
transitionLayer.style.opacity = "0";
setTimeout(() => {
transitionLayer.style.opacity = '0';
}, 10);
setTimeout(() => {
transitionLayer.style.opacity = '1';
}, 10);
transitionLayer.addEventListener("transitionend", () => {
background.style.background = `url(${newUrl}) 50% 50% / cover`;
transitionLayer.style.display = "none";
transitionLayer.style.opacity = "0";
}, {once: true});
}
function transitionFog() {
transitionBackground("assets/photos/fog-8519076-nordseher.jpg", "black");
}
function transitionSunset() {
transitionBackground("assets/photos/sunset-5928907-lizzymay.jpg", "white");
}
function transitionSunsetPurple() {
transitionBackground("assets/photos/sunset-1373171.jpg", "black");
}
function transitionSunsetYellow() {
transitionBackground("assets/photos/sunset-404072.jpg", "black");
}
function transitionRoadOrange() {
transitionBackground("assets/photos/road-1072821.jpg", "white");
}
function transitionRoadRed() {
transitionBackground("assets/photos/road-8395119.jpg", "white");
}
function transitionClouds() {
transitionBackground("assets/photos/clouds-8459053.jpg", "black");
}
function transitionForest() {
transitionBackground("assets/photos/forest-3622519.jpg", "black");
}
function transitionAvenue() {
transitionBackground("assets/photos/avenue-815297.jpg", "black");
}
function transitionMountain() {
transitionBackground("assets/photos/mountain-landscape-2031539.jpg", "black");
}
function transitionGalaxy() {
transitionBackground("assets/photos/milky-way-1845068.jpg", "white");
}
function transitionThunderstorm() {
transitionBackground("assets/photos/thunderstorm-3625405.jpg", "black");
}
function transitionAurora() {
transitionBackground("assets/photos/aurora-1197753.jpg", "black");
}
function transitionLake() {
transitionBackground("assets/photos/hintersee-3601004.jpg", "white");
}
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// ACCORDIAN IMAGES
function carouselExpand(i) {
const carousel = document.getElementById(`carousel-container`);
const carouselItems = carousel.getElementsByClassName("carousel-item");
i = i - 1;
if (i < carouselItems.length) {
for (let j = 0; j < carouselItems.length; j++) {
carouselItems[j].className = "carousel-item";
}
carouselItems[i].className = "carousel-item active";
}
}
function initCarousel() {
const carousel = document.getElementById(`carousel-container`);
const carouselItems = carousel.getElementsByClassName("carousel-item");
for (let i = 0; i < carouselItems.length; i++) {
carouselItems[i].addEventListener("mouseover", () => {
carouselExpand(i + 1);
});
}
}
// INITIALIZATION
// Set background colour to last saved value
const bgColor = document.getElementById("bgColour");
bgColor.value = localStorage.getItem("bgColour") || "#ffffff";
const initR = parseInt(bgColour.value.substring(1, 3), 16);
const initG = parseInt(bgColour.value.substring(3, 5), 16);
const initB = parseInt(bgColour.value.substring(5, 7), 16);
changeBackground(initR, initG, initB);
document.documentElement.style.setProperty("--bgColor", bgColour.value);
// Initialize carousel
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initCarousel();
carouselExpand(1);