fix:地图导航

quanyawei

2024-01-08 659d09ec24dab6c451220c8f3bb3943b0fdb3ba1

 uni_modules/uview-ui/components/u-rate/u-rate.vue

New file
@@ -0,0 +1,306 @@
<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-left': $u.addUnit(gutter / 2),
                     'padding-right': $u.addUnit(gutter / 2)
                        }"
                        :size="size"
                    ></u-icon>
                </view>
                <view
                    v-if="allowHalf"
                    @tap.stop="clickHandler($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-left': $u.addUnit(gutter / 2),
                     'padding-right': $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 {Boolean}         readonly      是否只读 （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;
         },
         activeIndex: 'emitEvent'
      },
      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.$u.os() === "ios" && this.moving) {
               return;
            }
            this.preventEvent(e);
            let x = 0;
            // 点击时，在nvue上，无法获得点击的坐标，所以无法实现点击半星选择
            // #ifndef APP-NVUE
            x = e.changedTouches[0].pageX;
            // #endif
            // #ifdef APP-NVUE
            // nvue下，无法通过点击获得坐标信息，这里通过元素的位置尺寸值模拟坐标
            x = index * this.rateWidth + this.rateBoxLeft;
            // #endif
            this.getActiveIndex(x,true);
         },
         // 发出事件
         emitEvent() {
            // 发出change事件
            this.$emit("change", this.activeIndex);
            // 同时修改双向绑定的value的值
            this.$emit("input", this.activeIndex);
         },
         // 获取当前激活的评分图标
         getActiveIndex(x,isClick = false) {
            if (this.disabled || this.readonly) {
               return;
            }
            // 判断当前操作的点的x坐标值，是否在允许的边界范围内
            const allRateWidth = this.rateWidth * this.count + this.rateBoxLeft;
            // 如果小于第一个图标的左边界，设置为最小值，如果大于所有图标的宽度，则设置为最大值
            x = uni.$u.range(this.rateBoxLeft, allRateWidth, x) - this.rateBoxLeft
            // 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 (isClick){
                  if (decimal > 0) index++;
               } else {
                  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;
            }

            // 设置延时为了让click事件在touchmove之前触发
            setTimeout(() => {
               this.moving = true;
            }, 10);
            // 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);
         },
      },
      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>