297 lines
9.5 KiB
Vue
297 lines
9.5 KiB
Vue
<template>
|
||
<view
|
||
class="u-rate"
|
||
:id="elId"
|
||
ref="u-rate"
|
||
:style="[$u.addStyle(customStyle)]"
|
||
>
|
||
<view
|
||
class="u-rate__content"
|
||
@touchmove.stop="touchMove"
|
||
@touchend.stop="touchEnd"
|
||
>
|
||
<view
|
||
class="u-rate__content__item"
|
||
v-for="(item, index) in Number(count)"
|
||
:key="index"
|
||
:class="[elClass]"
|
||
>
|
||
<view
|
||
class="u-rate__content__item__icon-wrap"
|
||
ref="u-rate__content__item__icon-wrap"
|
||
@tap.stop="clickHandler($event, index + 1)"
|
||
>
|
||
<u-icon
|
||
:name="
|
||
Math.floor(activeIndex) > index
|
||
? activeIcon
|
||
: inactiveIcon
|
||
"
|
||
:color="
|
||
disabled
|
||
? '#c8c9cc'
|
||
: Math.floor(activeIndex) > index
|
||
? activeColor
|
||
: inactiveColor
|
||
"
|
||
:custom-style="{
|
||
padding: `0 ${$u.addUnit(gutter / 2)}`,
|
||
}"
|
||
:size="size"
|
||
></u-icon>
|
||
</view>
|
||
<view
|
||
v-if="allowHalf"
|
||
@tap.stop="clickHandler($event, index + 1)"
|
||
class="u-rate__content__item__icon-wrap u-rate__content__item__icon-wrap--half"
|
||
:style="[{
|
||
width: $u.addUnit(rateWidth / 2),
|
||
}]"
|
||
ref="u-rate__content__item__icon-wrap"
|
||
>
|
||
<u-icon
|
||
:name="
|
||
Math.ceil(activeIndex) > index
|
||
? activeIcon
|
||
: inactiveIcon
|
||
"
|
||
:color="
|
||
disabled
|
||
? '#c8c9cc'
|
||
: Math.ceil(activeIndex) > index
|
||
? activeColor
|
||
: inactiveColor
|
||
"
|
||
:custom-style="{
|
||
padding: `0 ${$u.addUnit(gutter / 2)}`
|
||
}"
|
||
:size="size"
|
||
></u-icon>
|
||
</view>
|
||
</view>
|
||
</view>
|
||
</view>
|
||
</template>
|
||
|
||
<script>
|
||
import props from './props.js';
|
||
|
||
// #ifdef APP-NVUE
|
||
const dom = weex.requireModule("dom");
|
||
// #endif
|
||
/**
|
||
* rate 评分
|
||
* @description 该组件一般用于满意度调查,星型评分的场景
|
||
* @tutorial https://www.uviewui.com/components/rate.html
|
||
* @property {String | Number} value 用于v-model双向绑定选中的星星数量 (默认 1 )
|
||
* @property {String | Number} count 最多可选的星星数量 (默认 5 )
|
||
* @property {Boolean} disabled 是否禁止用户操作 (默认 false )
|
||
* @property {String | Number} size 星星的大小,单位px (默认 18 )
|
||
* @property {String} inactiveColor 未选中星星的颜色 (默认 '#b2b2b2' )
|
||
* @property {String} activeColor 选中的星星颜色 (默认 '#FA3534' )
|
||
* @property {String | Number} gutter 星星之间的距离 (默认 4 )
|
||
* @property {String | Number} minCount 最少选中星星的个数 (默认 1 )
|
||
* @property {Boolean} allowHalf 是否允许半星选择 (默认 false )
|
||
* @property {String} activeIcon 选中时的图标名,只能为uView的内置图标 (默认 'star-fill' )
|
||
* @property {String} inactiveIcon 未选中时的图标名,只能为uView的内置图标 (默认 'star' )
|
||
* @property {Boolean} touchable 是否可以通过滑动手势选择评分 (默认 'true' )
|
||
* @property {Object} customStyle 组件的样式,对象形式
|
||
* @event {Function} change 选中的星星发生变化时触发
|
||
* @example <u-rate :count="count" :value="2"></u-rate>
|
||
*/
|
||
export default {
|
||
name: "u-rate",
|
||
mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
|
||
data() {
|
||
return {
|
||
// 生成一个唯一id,否则一个页面多个评分组件,会造成冲突
|
||
elId: uni.$u.guid(),
|
||
elClass: uni.$u.guid(),
|
||
rateBoxLeft: 0, // 评分盒子左边到屏幕左边的距离,用于滑动选择时计算距离
|
||
activeIndex: this.value,
|
||
rateWidth: 0, // 每个星星的宽度
|
||
// 标识是否正在滑动,由于iOS事件上touch比click先触发,导致快速滑动结束后,接着触发click,导致事件混乱而出错
|
||
moving: false,
|
||
};
|
||
},
|
||
watch: {
|
||
value(val) {
|
||
this.activeIndex = val;
|
||
},
|
||
},
|
||
methods: {
|
||
init() {
|
||
uni.$u.sleep().then(() => {
|
||
this.getRateItemRect();
|
||
this.getRateIconWrapRect();
|
||
})
|
||
},
|
||
// 获取评分组件盒子的布局信息
|
||
async getRateItemRect() {
|
||
await uni.$u.sleep();
|
||
// uView封装的获取节点的方法,详见文档
|
||
// #ifndef APP-NVUE
|
||
this.$uGetRect("#" + this.elId).then((res) => {
|
||
this.rateBoxLeft = res.left;
|
||
});
|
||
// #endif
|
||
// #ifdef APP-NVUE
|
||
dom.getComponentRect(this.$refs["u-rate"], (res) => {
|
||
this.rateBoxLeft = res.size.left;
|
||
});
|
||
// #endif
|
||
},
|
||
// 获取单个星星的尺寸
|
||
getRateIconWrapRect() {
|
||
// uView封装的获取节点的方法,详见文档
|
||
// #ifndef APP-NVUE
|
||
this.$uGetRect("." + this.elClass).then((res) => {
|
||
this.rateWidth = res.width;
|
||
});
|
||
// #endif
|
||
// #ifdef APP-NVUE
|
||
dom.getComponentRect(
|
||
this.$refs["u-rate__content__item__icon-wrap"][0],
|
||
(res) => {
|
||
this.rateWidth = res.size.width;
|
||
}
|
||
);
|
||
// #endif
|
||
},
|
||
// 手指滑动
|
||
touchMove(e) {
|
||
// 如果禁止通过手动滑动选择,返回
|
||
if (!this.touchable) {
|
||
return;
|
||
}
|
||
this.preventEvent(e);
|
||
const x = e.changedTouches[0].pageX;
|
||
this.getActiveIndex(x);
|
||
},
|
||
// 停止滑动
|
||
touchEnd(e) {
|
||
// 如果禁止通过手动滑动选择,返回
|
||
if (!this.touchable) {
|
||
return;
|
||
}
|
||
this.preventEvent(e);
|
||
const x = e.changedTouches[0].pageX;
|
||
this.getActiveIndex(x);
|
||
},
|
||
// 通过点击,直接选中
|
||
clickHandler(e, index) {
|
||
// ios上,moving状态取消事件触发
|
||
if (uni.$u.os() === "ios" && this.moving) {
|
||
return;
|
||
}
|
||
this.preventEvent(e);
|
||
let x = 0;
|
||
// 点击时,在nvue上,无法获得点击的坐标,所以无法实现点击半星选择
|
||
// #ifndef APP-NVUE
|
||
x = e.changedTouches[0].pageX;
|
||
// #endif
|
||
// #ifdef APP-NVUE
|
||
// nvue下,无法通过点击获得坐标信息,这里通过元素的位置尺寸值模拟坐标
|
||
x = index * this.rateWidth + this.rateBoxLeft;
|
||
// #endif
|
||
this.getActiveIndex(x);
|
||
},
|
||
// 发出事件
|
||
emitEvent() {
|
||
// 发出change事件
|
||
this.$emit("change", this.activeIndex);
|
||
// 同时修改双向绑定的value的值
|
||
this.$emit("input", this.activeIndex);
|
||
},
|
||
// 获取当前激活的评分图标
|
||
getActiveIndex(x) {
|
||
if (this.disabled) {
|
||
return;
|
||
}
|
||
// 判断当前操作的点的x坐标值,是否在允许的边界范围内
|
||
const allRateWidth = this.rateWidth * this.count + this.rateBoxLeft;
|
||
// 如果小于第一个图标的左边界,设置为最小值,如果大于所有图标的宽度,则设置为最大值
|
||
x = uni.$u.range(this.rateBoxLeft, allRateWidth, x);
|
||
// 滑动点相对于评分盒子左边的距离
|
||
const distance = x;
|
||
// 滑动的距离,相当于多少颗星星
|
||
let index;
|
||
// 判断是否允许半星
|
||
if (this.allowHalf) {
|
||
index = Math.floor(distance / this.rateWidth);
|
||
// 取余,判断小数的区间范围
|
||
const decimal = distance % this.rateWidth;
|
||
if (decimal <= this.rateWidth / 2 && decimal > 0) {
|
||
index += 0.5;
|
||
} else if (decimal > this.rateWidth / 2) {
|
||
index++;
|
||
}
|
||
} else {
|
||
index = Math.floor(distance / this.rateWidth);
|
||
// 取余,判断小数的区间范围
|
||
const decimal = distance % this.rateWidth;
|
||
// 非半星时,只有超过了图标的一半距离,才认为是选择了这颗星
|
||
if (decimal > this.rateWidth / 2) {
|
||
index++;
|
||
}
|
||
}
|
||
this.activeIndex = Math.min(index, this.count);
|
||
// 对最少颗星星的限制
|
||
if (this.activeIndex < this.minCount) {
|
||
this.activeIndex = this.minCount;
|
||
}
|
||
this.moving = true;
|
||
// 一定时间后,取消标识为移动中状态,是为了让click事件无效
|
||
setTimeout(() => {
|
||
this.moving = false;
|
||
}, 10);
|
||
this.emitEvent();
|
||
},
|
||
},
|
||
mounted() {
|
||
this.init();
|
||
},
|
||
};
|
||
</script>
|
||
|
||
<style lang="scss" scoped>
|
||
@import "../../libs/css/components.scss";
|
||
$u-rate-margin: 0 !default;
|
||
$u-rate-padding: 0 !default;
|
||
$u-rate-item-icon-wrap-half-top: 0 !default;
|
||
$u-rate-item-icon-wrap-half-left: 0 !default;
|
||
|
||
.u-rate {
|
||
@include flex;
|
||
align-items: center;
|
||
margin: $u-rate-margin;
|
||
padding: $u-rate-padding;
|
||
/* #ifndef APP-NVUE */
|
||
touch-action: none;
|
||
/* #endif */
|
||
|
||
&__content {
|
||
@include flex;
|
||
|
||
&__item {
|
||
position: relative;
|
||
|
||
&__icon-wrap {
|
||
&--half {
|
||
position: absolute;
|
||
overflow: hidden;
|
||
top: $u-rate-item-icon-wrap-half-top;
|
||
left: $u-rate-item-icon-wrap-half-left;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
.u-icon {
|
||
/* #ifndef APP-NVUE */
|
||
box-sizing: border-box;
|
||
/* #endif */
|
||
}
|
||
</style>
|