411 lines
12 KiB
Vue
411 lines
12 KiB
Vue
<template>
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<view class="carousel-3d-container" :style="{height: this.slideHeight + 'px'}">
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<view class="carousel-3d-slider" :style="{width: this.slideWidth + 'px', height: this.slideHeight + 'px'}">
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<slot></slot>
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</view>
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</view>
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</template>
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<script>
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/* eslint-disable */
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const noop = () => {
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}
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export default {
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name: 'curry-swiper',
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props: {
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// Number of slides
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count: {
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type: [Number, String],
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default: 0
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},
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// Slides perspective position
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perspective: {
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type: [Number, String],
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default: 35
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},
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// Number of slides displayed on each page
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display: {
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type: [Number, String],
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default: 3
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},
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loop: {
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type: Boolean,
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default: true
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},
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// Animation between slides in milliseconds
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animationSpeed: {
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type: [Number, String],
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default: 500
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},
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// Animation direction
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dir: {
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type: String,
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default: 'ltr'
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},
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width: {
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type: [Number, String],
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default: 360
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},
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height: {
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type: [Number, String],
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default: 270
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},
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border: {
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type: [Number, String],
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default: 1
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},
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// Space between slides in pixels
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space: {
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type: [Number, String],
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default: 'auto'
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},
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// Start slide index. First slide has 0 index
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startIndex: {
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type: [Number, String],
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default: 0
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},
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// Enable navigation by clicking on slide
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clickable: {
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type: Boolean,
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default: true
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},
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disable3d: {
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type: Boolean,
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default: false
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},
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// Minimum distance in pixels to swipe before a slide advance is triggered
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minSwipeDistance: {
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type: Number,
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default: 10
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},
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// Slide inverse scaling
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inverseScaling: {
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type: [Number, String],
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default: 300
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},
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onLastSlide: {
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type: Function,
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default: noop
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},
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onSlideChange: {
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type: Function,
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default: noop
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},
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bias: {
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type: String,
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default: 'left'
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},
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onMainSlideClick: {
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type: Function,
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default: noop
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}
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},
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data () {
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return {
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viewport: 0,
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currentIndex: 0,
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total: 0,
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dragOffset: 0,
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dragStartX: 0,
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mousedown: false,
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zIndex: 998
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}
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},
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watch: {
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count () {
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this.computeData()
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}
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},
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computed: {
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isLastSlide () {
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return this.currentIndex === this.total - 1
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},
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isFirstSlide () {
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return this.currentIndex === 0
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},
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isNextPossible () {
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return !(!this.loop && this.isLastSlide)
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},
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isPrevPossible () {
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return !(!this.loop && this.isFirstSlide)
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},
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slideWidth () {
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const vw = this.viewport
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const sw = parseInt(this.width) + (parseInt(this.border, 10) * 2)
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return vw < sw ? vw : sw
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},
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slideHeight () {
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const sw = parseInt(this.width, 10) + (parseInt(this.border, 10) * 2)
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const sh = parseInt(parseInt(this.height) + (this.border * 2), 10)
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const ar = this.calculateAspectRatio(sw, sh)
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return this.slideWidth / ar
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},
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visible () {
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const v = (this.display > this.total) ? this.total : this.display
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return v
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},
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hasHiddenSlides () {
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return this.total > this.visible
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},
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leftIndices () {
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let n = (this.visible - 1) / 2
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n = (this.bias.toLowerCase() === 'left' ? Math.ceil(n) : Math.floor(n))
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const indices = []
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for (let m = 1; m <= n; m++) {
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indices.push((this.dir === 'ltr')
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? (this.currentIndex + m) % (this.total)
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: (this.currentIndex - m) % (this.total))
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}
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return indices
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},
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rightIndices () {
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let n = (this.visible - 1) / 2
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n = (this.bias.toLowerCase() === 'right' ? Math.ceil(n) : Math.floor(n))
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const indices = []
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for (let m = 1; m <= n; m++) {
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indices.push((this.dir === 'ltr')
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? (this.currentIndex - m) % (this.total)
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: (this.currentIndex + m) % (this.total))
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}
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return indices
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},
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leftOutIndex () {
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let n = (this.visible - 1) / 2
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n = (this.bias.toLowerCase() === 'left' ? Math.ceil(n) : Math.floor(n))
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n++
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if (this.dir === 'ltr') {
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return ((this.total - this.currentIndex - n) <= 0)
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? (-parseInt(this.total - this.currentIndex - n))
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: (this.currentIndex + n)
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} else {
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return (this.currentIndex - n)
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}
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},
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rightOutIndex () {
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let n = (this.visible - 1) / 2
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n = (this.bias.toLowerCase() === 'right' ? Math.ceil(n) : Math.floor(n))
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n++
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if (this.dir === 'ltr') {
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return (this.currentIndex - n)
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} else {
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return ((this.total - this.currentIndex - n) <= 0)
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? (-parseInt(this.total - this.currentIndex - n, 10))
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: (this.currentIndex + n)
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}
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}
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},
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methods: {
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/**
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* Go to next slide
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*/
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goNext () {
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if (this.isNextPossible) {
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this.isLastSlide ? this.goSlide(0) : this.goSlide(this.currentIndex + 1)
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}
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},
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/**
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* Go to previous slide
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*/
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goPrev () {
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if (this.isPrevPossible) {
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this.isFirstSlide ? this.goSlide(this.total - 1) : this.goSlide(this.currentIndex - 1)
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}
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},
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/**
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* Go to slide
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* @param {String} index of slide where to go
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*/
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goSlide (index) {
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this.currentIndex = (index < 0 || index > this.total - 1) ? 0 : index
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if (this.isLastSlide) {
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if (this.onLastSlide !== noop) {
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console.warn('onLastSlide deprecated, please use @last-slide')
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}
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this.onLastSlide(this.currentIndex)
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this.$emit('last-slide', this.currentIndex)
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}
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this.$emit('before-slide-change', this.currentIndex)
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setTimeout(() => this.animationEnd(), this.animationSpeed)
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},
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/**
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* Go to slide far slide
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*/
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goFar (index) {
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let diff = (index === this.total - 1 && this.isFirstSlide) ? -1 : (index - this.currentIndex)
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if (this.isLastSlide && index === 0) {
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diff = 1
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}
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const diff2 = (diff < 0) ? -diff : diff
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let timeBuff = 0
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let i = 0
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while (i < diff2) {
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i += 1
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const timeout = (diff2 === 1) ? 0 : (timeBuff)
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setTimeout(() => (diff < 0) ? this.goPrev(diff2) : this.goNext(diff2), timeout)
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timeBuff += (this.animationSpeed / (diff2))
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}
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},
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/**
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* Trigger actions when animation ends
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*/
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animationEnd () {
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if (this.onSlideChange !== noop) {
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console.warn('onSlideChange deprecated, please use @after-slide-change')
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}
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this.onSlideChange(this.currentIndex)
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this.$emit('after-slide-change', this.currentIndex)
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},
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/**
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* Trigger actions when mouse is released
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* @param {Object} e The event object
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*/
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handleMouseup () {
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this.mousedown = false
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this.dragOffset = 0
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},
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/**
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* Trigger actions when mouse is pressed
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* @param {Object} e The event object
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*/
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handleMousedown (e) {
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if (!e.touches) {
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e.preventDefault()
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}
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this.mousedown = true
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this.dragStartX = ('ontouchstart' in window) ? e.touches[0].clientX : e.clientX
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},
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/**
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* Trigger actions when mouse is pressed and then moved (mouse drag)
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* @param {Object} e The event object
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*/
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handleMousemove (e) {
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if (!this.mousedown) {
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return
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}
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const eventPosX = ('ontouchstart' in window) ? e.touches[0].clientX : e.clientX
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const deltaX = (this.dragStartX - eventPosX)
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this.dragOffset = deltaX
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if (this.dragOffset > this.minSwipeDistance) {
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this.handleMouseup()
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this.goNext()
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} else if (this.dragOffset < -this.minSwipeDistance) {
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this.handleMouseup()
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this.goPrev()
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}
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},
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/**
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* A mutation observer is used to detect changes to the containing node
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* in order to keep the magnet container in sync with the height its reference node.
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*/
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attachMutationObserver () {
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const MutationObserver = window.MutationObserver ||
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window.WebKitMutationObserver ||
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window.MozMutationObserver
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if (MutationObserver) {
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const config = {
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attributes: true,
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childList: true,
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characterData: true
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}
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this.mutationObserver = new MutationObserver(() => {
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this.$nextTick(() => {
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this.computeData()
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})
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})
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if (this.$el) {
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this.mutationObserver.observe(this.$el, config)
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}
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}
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},
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/**
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* Stop listening to mutation changes
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*/
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detachMutationObserver () {
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if (this.mutationObserver) {
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this.mutationObserver.disconnect()
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}
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},
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/**
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* Get the number of slides
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* @return {Number} Number of slides
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*/
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getSlideCount () {
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if (this.$slots.default !== undefined) {
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return this.$slots.default.filter((value) => {
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return value.tag !== void 0
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}).length
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}
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return 0
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},
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/**
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* Calculate slide with and keep defined aspect ratio
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* @return {Number} Aspect ratio number
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*/
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calculateAspectRatio (width, height) {
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return Math.min(width / height)
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},
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/**
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* Re-compute the number of slides and current slide
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*/
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computeData (firstRun) {
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this.total = this.getSlideCount()
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if (firstRun || this.currentIndex >= this.total) {
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this.currentIndex = parseInt(this.startIndex) > this.total - 1 ? this.total - 1 : parseInt(this.startIndex)
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}
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this.viewport = this.$el.clientWidth
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},
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setSize () {
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this.$el.style.cssText += 'height:' + this.slideHeight + 'px;'
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this.$el.childNodes[0].style.cssText += 'width:' + this.slideWidth + 'px;' + ' height:' + this.slideHeight + 'px;'
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}
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},
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mounted () {
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this.computeData(true)
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this.attachMutationObserver()
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if (!this.$isServer) {
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window.addEventListener('resize', this.setSize)
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if ('ontouchstart' in window) {
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this.$el.addEventListener('touchstart', this.handleMousedown)
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this.$el.addEventListener('touchend', this.handleMouseup)
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this.$el.addEventListener('touchmove', this.handleMousemove)
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} else {
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this.$el.addEventListener('mousedown', this.handleMousedown)
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this.$el.addEventListener('mouseup', this.handleMouseup)
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this.$el.addEventListener('mousemove', this.handleMousemove)
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}
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}
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},
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beforeDestroy () {
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if (!this.$isServer) {
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this.detachMutationObserver()
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if ('ontouchstart' in window) {
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this.$el.removeEventListener('touchmove', this.handleMousemove)
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} else {
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this.$el.removeEventListener('mousemove', this.handleMousemove)
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}
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window.removeEventListener('resize', this.setSize)
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}
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}
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}
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</script>
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<style lang="scss" scoped>
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.carousel-3d-container {
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min-height: 1px;
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width: 100%;
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position: relative;
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z-index: 0;
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overflow: hidden;
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margin: 0px auto;
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box-sizing: border-box;
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}
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.carousel-3d-slider {
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position: relative;
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margin: 0 auto;
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transform-style: preserve-3d;
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-webkit-perspective: 1000px;
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-moz-perspective: 1000px;
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perspective: 1000px;
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}
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</style>
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