Skip to content

Commit

Permalink
Merge pull request #151 from tiengming/main
Browse files Browse the repository at this point in the history 
新增灯箱插件
  • Loading branch information
@Meekdai
Meekdai authored Jul 24, 2024
2 parents ee38206 + a2daa78 commit 1efcf27
Showing 1 changed file with 369 additions and 0 deletions.
369 changes: 369 additions & 0 deletions plugins/lightbox.js
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,369 @@
(function() {
// 灯箱插件
class Lightbox {
constructor(options = {}) {
this.options = Object.assign({
animationDuration: 300,
closeOnOverlayClick: true,
onOpen: null,
onClose: null,
onNavigate: null
}, options);

this.images = [];
this.currentIndex = 0;
this.isOpen = false;
this.isZoomed = false;
this.zoomLevel = 1;
this.touchStartX = 0;
this.touchEndX = 0;
this.wheelTimer = null;

this.init();
}

init() {
this.createStyles();
this.createLightbox();
this.bindEvents();
}

createStyles() {
const style = document.createElement('style');
style.textContent = `
.lb-lightbox-overlay {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: rgba(255, 255, 255, 0.9);
backdrop-filter: blur(5px);
display: flex;
justify-content: center;
align-items: center;
opacity: 0;
transition: opacity ${this.options.animationDuration}ms ease;
pointer-events: none;
}
.lb-lightbox-overlay.active {
pointer-events: auto;
}
.lb-lightbox-content-wrapper {
position: relative;
display: flex;
justify-content: center;
align-items: center;
width: 100%;
height: 100%;
}
.lb-lightbox-container {
max-width: 90%;
max-height: 90%;
position: relative;
transition: transform ${this.options.animationDuration}ms cubic-bezier(0.25, 0.1, 0.25, 1);
}
.lb-lightbox-image {
max-width: 100%;
max-height: 100%;
object-fit: contain;
border-radius: 8px;
box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
transition: transform ${this.options.animationDuration}ms cubic-bezier(0.25, 0.1, 0.25, 1), opacity ${this.options.animationDuration}ms ease;
}
.lb-lightbox-nav {
position: absolute;
top: 50%;
transform: translateY(-50%);
background-color: rgba(255, 255, 255, 0.8);
color: #333;
border: none;
border-radius: 50%;
width: 50px;
height: 50px;
font-size: 24px;
display: flex;
justify-content: center;
align-items: center;
cursor: pointer;
transition: all 0.3s ease;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.lb-lightbox-nav:hover {
background-color: rgba(255, 255, 255, 1);
transform: translateY(-50%) scale(1.1);
}
.lb-lightbox-nav:active {
transform: translateY(-50%) scale(0.9);
}
.lb-lightbox-prev {
left: 20px;
}
.lb-lightbox-next {
right: 20px;
}
.lb-lightbox-close {
position: absolute;
top: 20px;
right: 20px;
background-color: rgba(255, 255, 255, 0.8);
color: #333;
border: none;
border-radius: 50%;
width: 40px;
height: 40px;
font-size: 24px;
display: flex;
justify-content: center;
align-items: center;
cursor: pointer;
transition: all 0.3s ease;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.lb-lightbox-close:hover {
background-color: rgba(255, 255, 255, 1);
transform: scale(1.1);
}
.lb-lightbox-close:active {
transform: scale(0.9);
}
@media (max-width: 768px) {
.lb-lightbox-nav {
width: 40px;
height: 40px;
font-size: 20px;
}
.lb-lightbox-close {
width: 35px;
height: 35px;
font-size: 20px;
}
}
@media (prefers-color-scheme: dark) {
.lb-lightbox-overlay {
background-color: rgba(0, 0, 0, 0.9);
}
.lb-lightbox-nav,
.lb-lightbox-close {
background-color: rgba(50, 50, 50, 0.8);
color: #fff;
}
.lb-lightbox-nav:hover,
.lb-lightbox-close:hover {
background-color: rgba(70, 70, 70, 1);
}
.lb-lightbox-image {
box-shadow: 0 10px 30px rgba(255, 255, 255, 0.1);
}
}
`;
document.head.appendChild(style);
}

createLightbox() {
this.overlay = document.createElement('div');
this.overlay.className = 'lb-lightbox-overlay';
this.overlay.style.zIndex = '-1';

this.contentWrapper = document.createElement('div');
this.contentWrapper.className = 'lb-lightbox-content-wrapper';

this.container = document.createElement('div');
this.container.className = 'lb-lightbox-container';

this.image = document.createElement('img');
this.image.className = 'lb-lightbox-image';

this.prevButton = document.createElement('button');
this.prevButton.className = 'lb-lightbox-nav lb-lightbox-prev';
this.prevButton.innerHTML = '❮';

this.nextButton = document.createElement('button');
this.nextButton.className = 'lb-lightbox-nav lb-lightbox-next';
this.nextButton.innerHTML = '❯';

this.closeButton = document.createElement('button');
this.closeButton.className = 'lb-lightbox-close';
this.closeButton.innerHTML = '×';

this.container.appendChild(this.image);
this.contentWrapper.appendChild(this.container);
this.contentWrapper.appendChild(this.prevButton);
this.contentWrapper.appendChild(this.nextButton);
this.contentWrapper.appendChild(this.closeButton);

this.overlay.appendChild(this.contentWrapper);

document.body.appendChild(this.overlay);
}

bindEvents() {
document.addEventListener('click', this.handleImageClick.bind(this), true);
this.overlay.addEventListener('click', this.handleOverlayClick.bind(this));
this.prevButton.addEventListener('click', this.showPreviousImage.bind(this));
this.nextButton.addEventListener('click', this.showNextImage.bind(this));
this.closeButton.addEventListener('click', this.close.bind(this));
document.addEventListener('keydown', this.handleKeyDown.bind(this));
this.overlay.addEventListener('wheel', this.handleWheel.bind(this));
this.overlay.addEventListener('touchstart', this.handleTouchStart.bind(this));
this.overlay.addEventListener('touchmove', this.handleTouchMove.bind(this));
this.overlay.addEventListener('touchend', this.handleTouchEnd.bind(this));
}

handleImageClick(event) {
const clickedImage = event.target.closest('img');
if (clickedImage && !this.isOpen) {
event.preventDefault();
event.stopPropagation();
this.images = Array.from(document.querySelectorAll('.markdown-body img'));
this.currentIndex = this.images.indexOf(clickedImage);
this.open();
}
}

handleOverlayClick(event) {
if (event.target === this.overlay && this.options.closeOnOverlayClick) {
this.close();
} else if (!event.target.closest('.lb-lightbox-container')) {
const elementBelow = document.elementFromPoint(event.clientX, event.clientY);
if (elementBelow) {
elementBelow.click();
}
}
}

handleKeyDown(event) {
if (!this.isOpen) return;

switch (event.key) {
case 'ArrowLeft':
this.showPreviousImage();
break;
case 'ArrowRight':
this.showNextImage();
break;
case 'Escape':
this.close();
break;
}
}

handleWheel(event) {
event.preventDefault();
clearTimeout(this.wheelTimer);

this.wheelTimer = setTimeout(() => {
const delta = Math.sign(event.deltaY);
if (delta > 0) {
this.showNextImage();
} else {
this.showPreviousImage();
}
}, 50);
}

handleTouchStart(event) {
this.touchStartX = event.touches[0].clientX;
}

handleTouchMove(event) {
this.touchEndX = event.touches[0].clientX;
}

handleTouchEnd() {
const difference = this.touchStartX - this.touchEndX;
if (Math.abs(difference) > 50) {
if (difference > 0) {
this.showNextImage();
} else {
this.showPreviousImage();
}
}
}

open() {
this.isOpen = true;
this.overlay.style.zIndex = '10000';
this.overlay.classList.add('active');
this.showImage();
this.overlay.style.opacity = '1';
document.body.style.overflow = 'hidden';
if (typeof this.options.onOpen === 'function') {
this.options.onOpen();
}
}

close() {
this.isOpen = false;
this.overlay.style.opacity = '0';
this.overlay.classList.remove('active');
document.body.style.overflow = '';
setTimeout(() => {
this.image.style.transform = '';
this.zoomLevel = 1;
this.isZoomed = false;
this.overlay.style.zIndex = '-1';
}, this.options.animationDuration);
if (typeof this.options.onClose === 'function') {
this.options.onClose();
}
}

showPreviousImage() {
if (this.currentIndex > 0) {
this.currentIndex--;
this.showImage();
}
}

showNextImage() {
if (this.currentIndex < this.images.length - 1) {
this.currentIndex++;
this.showImage();
}
}

showImage() {
const imgSrc = this.images[this.currentIndex].src;
this.image.style.opacity = '0';

const newImage = new Image();
newImage.src = imgSrc;
newImage.onload = () => {
this.image.src = imgSrc;
this.image.style.opacity = '1';
};

this.prevButton.style.display = this.currentIndex > 0 ? '' : 'none';
this.nextButton.style.display = this.currentIndex < this.images.length - 1 ? '' : 'none';

if (typeof this.options.onNavigate === 'function') {
this.options.onNavigate(this.currentIndex);
}

this.preloadImages();
}

zoom(factor) {
this.zoomLevel += factor;
this.zoomLevel = Math.max(1, Math.min(this.zoomLevel, 3));
this.image.style.transform = `scale(${this.zoomLevel})`;
this.isZoomed = this.zoomLevel !== 1;
}

preloadImages() {
const preloadNext = (this.currentIndex + 1) % this.images.length;
const preloadPrev = (this.currentIndex - 1 + this.images.length) % this.images.length;
new Image().src = this.images[preloadNext].src;
new Image().src = this.images[preloadPrev].src;
}
}

// 将 Lightbox 类添加到全局对象
window.Lightbox = Lightbox;

// 自动初始化
document.addEventListener('DOMContentLoaded', () => {
new Lightbox();
});
})();

0 comments on commit 1efcf27

Please sign in to comment.