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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 {}
}
}
},
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,
'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>