初始化 uniapp 小程序

yudao-vue-ui/components/uni-transition/uni-transition.vue

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+<template>
+	<view 
+		v-if="isShow" 
+		ref="ani" 
+		class="uni-transition" 
+		:class="[ani.in]" 
+		:style="'transform:' +transform+';'+stylesObject"
+		@click="change"
+	>
+		 <slot></slot>
+	</view>
+</template>
+
+<script>
+	// #ifdef APP-NVUE
+	const animation = uni.requireNativePlugin('animation');
+	// #endif
+	/**
+	 * Transition 过渡动画
+	 * @description 简单过渡动画组件
+	 * @tutorial https://ext.dcloud.net.cn/plugin?id=985
+	 * @property {Boolean} show = [false|true] 控制组件显示或隐藏
+     * @property {Array} modeClass = [fade|slide-top|slide-right|slide-bottom|slide-left|zoom-in|zoom-out] 过渡动画类型
+     *  @value fade 渐隐渐出过渡
+     *  @value slide-top 由上至下过渡
+     *  @value slide-right 由右至左过渡
+     *  @value slide-bottom 由下至上过渡
+     *  @value slide-left 由左至右过渡
+     *  @value zoom-in 由小到大过渡
+     *  @value zoom-out 由大到小过渡
+	 * @property {Number} duration 过渡动画持续时间
+	 * @property {Object} styles 组件样式，同 css 样式，注意带’-‘连接符的属性需要使用小驼峰写法如：`backgroundColor:red`
+	 */
+	export default {
+		name: 'uniTransition',
+		props: {
+			show: {
+				type: Boolean,
+				default: false
+			},
+			modeClass: {
+				type: Array,
+				default () {
+					return []
+				}
+			},
+			duration: {
+				type: Number,
+				default: 300
+			},
+			styles: {
+				type: Object,
+				default () {
+					return {}
+				}
+			},
+			maskBackgroundColor: {
+				type: String,
+				default: 'rgba(0, 0, 0, 0.4)'
+			}
+		},
+		data() {
+			return {
+				isShow: false,
+				transform: '',
+				ani: { in: '',
+					active: ''
+				}
+			};
+		},
+		watch: {
+			show: {
+				handler(newVal) {
+					if (newVal) {
+						this.open()
+					} else {
+						this.close()
+					}
+				},
+				immediate: true
+			}
+		},
+		computed: {
+			stylesObject() {
+				let styles = {
+					...this.styles,
+					backgroundColor: this.maskBackgroundColor,
+					'transition-duration': this.duration / 1000 + 's'
+				}
+				let transfrom = ''
+				for (let i in styles) {
+					let line = this.toLine(i)
+					transfrom += line + ':' + styles[i] + ';'
+				}
+				return transfrom
+			}
+		},
+		created() {
+			// this.timer = null
+			// this.nextTick = (time = 50) => new Promise(resolve => {
+			// 	clearTimeout(this.timer)
+			// 	this.timer = setTimeout(resolve, time)
+			// 	return this.timer
+			// });
+		},
+		methods: {
+			change() {
+				this.$emit('click', {
+					detail: this.isShow
+				})
+			},
+			open() {
+				clearTimeout(this.timer)
+				this.isShow = true
+				this.transform = ''
+				this.ani.in = ''
+				for (let i in this.getTranfrom(false)) {
+					if (i === 'opacity') {
+						this.ani.in = 'fade-in'
+					} else {
+						this.transform += `${this.getTranfrom(false)[i]} `
+					}
+				}
+				this.$nextTick(() => {
+					setTimeout(() => {
+						this._animation(true)
+					}, 50)
+				})
+
+			},
+			close(type) {
+				clearTimeout(this.timer)
+				this._animation(false)
+			},
+			_animation(type) {
+				let styles = this.getTranfrom(type)
+				// #ifdef APP-NVUE
+				if(!this.$refs['ani']) return
+				animation.transition(this.$refs['ani'].ref, {
+					styles,
+					duration: this.duration, //ms
+					timingFunction: 'ease',
+					needLayout: false,
+					delay: 0 //ms
+				}, () => {
+					if (!type) {
+						this.isShow = false
+					}
+					this.$emit('change', {
+						detail: this.isShow
+					})
+				})
+				// #endif
+				// #ifndef APP-NVUE
+				this.transform = ''
+				for (let i in styles) {
+					if (i === 'opacity') {
+						this.ani.in = `fade-${type?'out':'in'}`
+					} else {
+						this.transform += `${styles[i]} `
+					}
+				}
+				this.timer = setTimeout(() => {
+					if (!type) {
+						this.isShow = false
+					}
+					this.$emit('change', {
+						detail: this.isShow
+					})
+
+				}, this.duration)
+				// #endif
+
+			},
+			getTranfrom(type) {
+				let styles = {
+					transform: ''
+				}
+				this.modeClass.forEach((mode) => {
+					switch (mode) {
+						case 'fade':
+							styles.opacity = type ? 1 : 0
+							break;
+						case 'slide-top':
+							styles.transform += `translateY(${type?'0':'-100%'}) `
+							break;
+						case 'slide-right':
+							styles.transform += `translateX(${type?'0':'100%'}) `
+							break;
+						case 'slide-bottom':
+							styles.transform += `translateY(${type?'0':'100%'}) `
+							break;
+						case 'slide-left':
+							styles.transform += `translateX(${type?'0':'-100%'}) `
+							break;
+						case 'zoom-in':
+							styles.transform += `scale(${type?1:0.8}) `
+							break;
+						case 'zoom-out':
+							styles.transform += `scale(${type?1:1.2}) `
+							break;
+					}
+				})
+				return styles
+			},
+			_modeClassArr(type) {
+				let mode = this.modeClass
+				if (typeof(mode) !== "string") {
+					let modestr = ''
+					mode.forEach((item) => {
+						modestr += (item + '-' + type + ',')
+					})
+					return modestr.substr(0, modestr.length - 1)
+				} else {
+					return mode + '-' + type
+				}
+			},
+			// getEl(el) {
+			// 	console.log(el || el.ref || null);
+			// 	return el || el.ref || null
+			// },
+			toLine(name) {
+				return name.replace(/([A-Z])/g, "-$1").toLowerCase();
+			}
+		}
+	}
+</script>
+
+<style>
+	.uni-transition {
+		transition-timing-function: ease;
+		transition-duration: 0.3s;
+		transition-property: transform, opacity;
+	}
+
+	.fade-in {
+		opacity: 0;
+	}
+
+	.fade-active {
+		opacity: 1;
+	}
+
+	.slide-top-in {
+		/* transition-property: transform, opacity; */
+		transform: translateY(-100%);
+	}
+
+	.slide-top-active {
+		transform: translateY(0);
+		/* opacity: 1; */
+	}
+
+	.slide-right-in {
+		transform: translateX(100%);
+	}
+
+	.slide-right-active {
+		transform: translateX(0);
+	}
+
+	.slide-bottom-in {
+		transform: translateY(100%);
+	}
+
+	.slide-bottom-active {
+		transform: translateY(0);
+	}
+
+	.slide-left-in {
+		transform: translateX(-100%);
+	}
+
+	.slide-left-active {
+		transform: translateX(0);
+		opacity: 1;
+	}
+
+	.zoom-in-in {
+		transform: scale(0.8);
+	}
+
+	.zoom-out-active {
+		transform: scale(1);
+	}
+
+	.zoom-out-in {
+		transform: scale(1.2);
+	}
+</style>