# 2.3 首页上划

顶部保留原本默认时的色彩，另外留出 20px 过渡到透明。划动到最底部时，为保证浏览体验，保证至少留出40px。

# 基础样式

首页上划时，底部渐变背景位置保持不变，顶部状态栏和标题栏渐显出现一个固定色，并跟随一个高度20px的渐变条（如下图）。

# 顶部信息常驻

首页上划，有关键信息展示时，可置顶固定在顶部，方便快速浏览到信息。

# 基础实例

# 用法


<template>
  <div class="wrapper">
    <image :class="['wrapper-background']" src="./assets/image/gradient/home_bg_@3x.png"></image>
    <dof-minibar
      title="空调"
      :backgroundColor="'transparent'"
      @dofMinibarLeftButtonClicked="back"
      :right-button="rightButtonBlack"
    >
      <dof-tab-page
        type="primary"
        slot="middle"
        :is-slot="true"
        ref="dof-tab-page"
        :tabStyles="{ bgColor: 'transparent' }"
        :tab-titles="navTabTitles"
        @dofTabSelected="tabChangeHandler"
      ></dof-tab-page>
    </dof-minibar>
    <!-- <div class="minibar-gradient" v-if="appearMiniBarGradient"></div> -->
    <scroller class="scroller" @scroll="scrollHandler" show-scrollbar="false">
      <!-- v-if="appearMiniBarGradient" -->
      <div
        class="minibar-gradient-display"
        @disappear="minibarGraientDisapperarHanler"
        @appear="minibarGraientApperarHanler"
      ></div>

      <div :style="{ height: mainContentHeight }"></div>
      <!-- <dof-gradient :startColor="startColor" :height="mainContentHeight"></dof-gradient> -->
      <!-- :style="{ transform: elementStyle.transform }" -->
      <div class="main-content" ref="mainContent">
        <!-- 滑动时需处理的部分---start -->
        <div class="content-detail" ref="contentDetail">
          <div class="statusWrapper">
            <dof-status :options="options" :active="0" :mainTextColor="true ? '#616C73' : '#616C73'"></dof-status>
          </div>
          <!-- :style="{ opacity: elementStyle.opacity }" -->
          <div class="image-and-temp-box">
            <image :src="air_conditioner_img" class="main-image"></image>
            <div class="temp-box">
              <div class="temp-box-div">
                <div class="temp-box-num-div">
                  <text class="temp-box-num">32</text>
                  <text class="temp-box-unit">°C</text>
                </div>
                <text class="temp-box-text">室外温度</text>
              </div>
              <div class="temp-line"></div>
              <div class="temp-box-div">
                <div class="temp-box-num-div">
                  <text class="temp-box-num">21</text>
                  <text class="temp-box-unit">°C</text>
                </div>
                <text class="temp-box-text">室内温度</text>
              </div>
              <div class="temp-line"></div>
              <div class="temp-box-div">
                <div class="temp-box-num-div">
                  <text class="temp-box-num">60</text>
                  <text class="temp-box-unit">%</text>
                </div>
                <text class="temp-box-text">室内湿度</text>
              </div>
            </div>
          </div>
        </div>
      </div>
      <!-- 滑动时需处理的部分---end -->
      <div class="board-box">
        <dof-board class="board-wrapper">
          <dof-card class="m-b-10">
            <div class="placeholder-big"></div>
          </dof-card>
          <dof-row class="m-b-10" :gap="16">
            <dof-col>
              <dof-card>
                <div class="placeholder"></div>
              </dof-card>
            </dof-col>
            <dof-col>
              <dof-card>
                <div class="placeholder"></div>
              </dof-card>
            </dof-col>
          </dof-row>
          <dof-row class="m-b-10">
            <dof-col>
              <dof-card>
                <div class="placeholder-big2"></div>
              </dof-card>
            </dof-col>
          </dof-row>
          <!-- <dof-row class="m-b-10" :gap="16">
            <dof-col>
              <dof-card>
                <div class="placeholder"></div>
              </dof-card>
            </dof-col>
            <dof-col>
              <dof-card>
                <div class="placeholder"></div>
              </dof-card>
            </dof-col>
          </dof-row> -->
          <dof-row class="m-b-10">
            <dof-col>
              <dof-card>
                <div class="placeholder-small"></div>
              </dof-card>
            </dof-col>
          </dof-row>
        </dof-board>
      </div>
      <div class="h-300px"></div>
      <dof-bottom-bar :tabGroups="tabTitles"></dof-bottom-bar>
    </scroller>
  </div>
</template>

<style scoped>
.wrapper {
  position: relative;
}
.wrapper-background {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 750px;
  height: 750px;
  opacity: 1;
  z-index: 1;
}
.statusWrapper {
  margin-top: 24px;
}
.posi {
  position: relative;
  /* height: 0; */
}
.minibar-gradient {
  /* position: fixed; */
  /* top: 0;
  left: 0; */
  height: 40px;
  /* background-color: red; */
  z-index: 99999;
  background-image: linear-gradient(to bottom, #dfe8f6, rgba(223, 232, 246, 0));
}
.minibar-gradient-display {
  height: 20px;
  /* position: absolute;
  left: 0;
  top: 0; */
}
.scroller {
  position: relative;
  flex: 1;
  width: 750px;
  height: 2000px;
}
.h-300px {
  width: 750px;
  height: 0;
  padding-bottom: 300px;
  background-color: #f9f9f9;
  position: relative;
  top: -2px;
}
.main-content {
  width: 750px;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 100;
  padding-bottom: 100px;
}
.board-box {
  padding-top: 100px;
  /* background-color: red; */
}
.board-wrapper {
  padding-left: 16px;
  padding-right: 16px;
  background-color: #f9f9f9;
}
.m-b-10 {
  margin-bottom: 20px;
}
.m-b-22 {
  margin-bottom: 22px;
}
.placeholder-big {
  height: 242px;
}
.placeholder-big2 {
  height: 480px;
}
.placeholder-small {
  height: 210px;
}
.placeholder {
  height: 152px;
}
.image-and-temp-box {
  width: 686px;
  height: 508px;
  position: relative;
  justify-content: flex-end;
  flex-direction: column;
}
.main-image {
  width: 686px;
  height: 508px;
  position: absolute;
  top: 0;
  left: 0;
}
.content-detail {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  transition-property: all;
  transition-duration: 0.3s;
  transition-delay: 0s;
  transition-timing-function: cubic-bezier(0.25, 0.1, 0.25, 1);
  transform: scale(1, 1);
  opacity: 1;
}
.cold-box {
  padding: 20px 32px;
  background-color: #eadede;
  margin: 24px auto;
  border-radius: 40px;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}
.cold-box-dot {
  width: 14px;
  height: 14px;
  border-radius: 14px;
  margin-right: 16px;
  background-color: #00bdb2;
}
.cold-box-text {
  font-size: 28px;
  color: #616c73;
}
.temp-box {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  color: #616c73;
  font-size: 32px;
}
.temp-box-num-div {
  flex-direction: row;
  align-items: flex-end;
  justify-content: center;
}
.temp-box-num {
  font-family: PingFangSC-Medium;
  color: #616c73;
  /* text-align: center; */
  font-size: 32px;
}
.temp-box-unit {
  font-family: PingFangSC-Medium;
  font-size: 24px;
  color: #616c73;
  margin-bottom: 4px;
}
.temp-box-text {
  font-family: PingFangSC-Regular;
  color: #8e969b;
  font-size: 24px;
  margin-top: 16px;
  text-align: center;
}
.temp-box-div {
  padding-right: 33px;
  padding-left: 33px;
}
.temp-line {
  width: 2px;
  height: 60px;
  background-color: #e5e5e8;
}
</style>

<script>
import Title from 'src/_mods/title.vue'
import Category from 'src/_mods/catalog'
const dom = weex.requireModule('dom')
import {
  DofMinibar,
  DofGradient,
  DofBoard,
  DofRow,
  DofCol,
  DofCardGroup,
  DofCard,
  DofCardItem,
  DofBottomBar,
  DofTabPage,
  DofStatus,
  Utils
} from 'dolphin-weex-ui'
const modal = weex.requireModule('modal')
const animation = weex.requireModule('animation')
module.exports = {
  components: {
    Title,
    Category,
    DofMinibar,
    DofGradient,
    DofBoard,
    DofRow,
    DofCol,
    DofCardGroup,
    DofCard,
    DofCardItem,
    DofBottomBar,
    DofTabPage,
    DofStatus
  },
  data() {
    return {
      minibarBg: 'transparent',
      options: [
        { dotColor: '#3CD456', text: '制冷中' },
        { dotColor: '#616C73', text: '已离线' }
      ],
      navTabTitles: [
        {
          title: '设备'
        },
        {
          title: '推荐'
        }
      ],
      rightButtonBlack: './assets/image/header/icon_more_black@3x.png',
      air_conditioner_img: './assets/image/ui-slider-up-air.png',
      leftButton: 'http://dolphin-weex-dev.msmartlife.cn/cdn/images/header/icon_back_white@3x.png',
      width: '750',
      height: '700',
      startColor: '#29C3FF',
      endColor: '#ffffff',
      value: '0',
      tabTitles: [
        {
          type: 'power',
          title: 'power',
          text: '开关',
          iconColor: '#00A4F2',
          disabled: false,
          icon: 'http://dolphin-weex-dev.msmartlife.cn/cdn/images/sample/water_heater/calorifier_icon_on@3x.png'
        },
        {
          type: 'timing',
          title: 'timing',
          text: '定时',
          iconColor: '#f2f2f2',
          iconTextColor: '#616C73',
          disabled: false,
          icon: 'https://dolphin-weex-dev.msmartlife.cn/cdn/images/sample/water_heater/calorifier_icon_timingoff@3x.png'
        }
      ],
      preScrollY: 0,
      mainContentHeight: 0,
      transformScale: 'scale(1,1)',
      animateOpacity: 1
    }
  },

  mounted() {
    this.$nextTick(() => {
      let ele = this.$refs.mainContent
      this.getEleHeight(ele.children[0])
    })
  },
  methods: {
    back() {},
    animateMethod(tempScale, opa) {
      const ele = this.$refs.mainContent
      if (!ele) return
      animation.transition(
        ele,
        {
          styles: {
            transform: `scale(${tempScale})`,
            opacity: opa
          },
          duration: this.maxDuration / this.intervalGap,
          timingFunction: 'linear',
          delay: 0
        },
        function() {}
      )
    },
    minibarGraientDisapperarHanler(e) {
      console.log('不见啦')
      this.minibarBg = '#DFE8F6'
    },
    minibarGraientApperarHanler(e) {
      console.log('出现啦')
      this.minibarBg = 'transparent'
    },
    tabChangeHandler(e) {
      const self = this
      const { index } = e
      this.$toast(index)
    },
    scrollHandler(e) {
      console.log(JSON.stringify(e.contentOffset))
      let currScrollY = parseInt(e.contentOffset.y)
      if (currScrollY > this.preScrollY) {
        //页面向下滑
        this.scrollDirection = 'down'
      } else {
        //页面向上滑
        this.scrollDirection = 'up'
      }
      this.preScrollY = currScrollY
    },
    getEleHeight(ele) {
      let self = this
      dom.getComponentRect(ele, result => {
        let size = result.size || {}
        let height = parseInt(size.height)
        if (!height) {
          self.getEleHeight(ele)
        } else {
          self.mainContentHeight = height
        }
      })
    },
    computedNum(x) {
      if (x < 0) {
        x = 0
      } else if (x > 1) {
        x = 1
      }
      return Number(x)
    }
  },
  watch: {
    preScrollY(newValue, oldValue) {
      let { mainContentHeight } = this
      const unitHeight = mainContentHeight / 2
      let scrollTop = newValue * -1
      let opa = parseFloat(1 - parseFloat(scrollTop / unitHeight).toFixed(2)).toFixed(2)
      opa = this.computedNum(opa)
      mainContentHeight = mainContentHeight + mainContentHeight * 1
      console.log('mainContentHeight')

      let currScale = parseFloat(1 - parseFloat(scrollTop / mainContentHeight).toFixed(2)).toFixed(2)
      currScale = Number(currScale)
      // if (scrollTop >= mainContentHeight) {
      //   currScale = 1
      //   opa = 1
      // }
      if (currScale <= 0.8) {
        currScale = 0.8
      }
      if (currScale >= 1) {
        currScale = 1
      }
      this.animateMethod(currScale, opa)
      // Utils.throttle(() => {
      //   // console.log(currScale.toString())
      //   this.transformScale = `scale(${currScale}, ${currScale})`
      //   this.animateOpacity = currScale
      // }, 100)
    }
  },
  computed: {
    appearMiniBarGradient() {
      return this.minibarBg == '#DFE8F6'
    },
    elementStyle() {
      let { preScrollY, mainContentHeight } = this
      let scrollTop = preScrollY * -1
      let currScale = parseFloat(1 - parseFloat(scrollTop / mainContentHeight).toFixed(2)).toFixed(2)
      currScale = Number(currScale)
      let opa = currScale
      if (scrollTop >= mainContentHeight) {
        currScale = 1
        opa = 1
      }

      if (currScale <= 0.8) {
        currScale = 0.8
        opa = 0
      }
      if (currScale >= 1) {
        currScale = 1
        opa = 1
      }
      return {
        transform: `scale(${currScale}, ${currScale})`,
        opacity: currScale
      }
    }
  }
}
</script>
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# 固定顶部实例

# 用法


<template>
  <div class="wrapper">
    <image :class="['wrapper-background']" src="./assets/image/gradient/home_bg_29C3FF@3x.png"></image>

    <dof-minibar title="洗衣机" :backgroundColor="minibarBg" @dofMinibarLeftButtonClicked="back">
      <dof-tab-page
        type="primary"
        slot="middle"
        :is-slot="true"
        ref="dof-tab-page"
        :tabStyles="{ bgColor: 'transparent' }"
        :tab-titles="navTabTitles"
        @dofTabSelected="tabChangeHandler"
      ></dof-tab-page>
    </dof-minibar>
    <list class="scroller" @scroll="scrollHandler" show-scrollbar="false">
      <!-- sticky部分 -->
      <header>
        <div :class="[appearMiniBarGradient && 'sticky-wrapper']">
          <div class="statusWrapper">
            <dof-status :options="options" :active="0" :mainTextColor="true ? '#616C73' : '#616C73'"></dof-status>
          </div>
          <div
            class="resident-top"
            :style="{
              opacity: appearMiniBarGradient ? 1 : 0,
              height: isIos || appearMiniBarGradient ? '178px' : '0px'
            }"
          >
            <div>
              <div class="time-box">
                <text class="time-box-text fs70">00</text>
                <div class="time-box-text time-box-dot-section">
                  <text class="time-box-dot"></text>
                  <text class="time-box-dot"></text>
                </div>
                <text class="time-box-text fs70">58</text>
              </div>
              <text class="left-time-text mb14">剩余时间</text>
            </div>
          </div>
        </div>
        <div
          :class="['minibar-gradient', isIos && 'minibar-gradient-ios']"
          :style="{ opacity: appearMiniBarGradient ? 1 : 0 }"
        ></div>
      </header>
      <cell>
        <!-- 滑动时需处理的部分 -194px'---start -->
        <div class="main-content" :style="{ marginTop: isIos ? '-194px' : '0px' }">
          <div class="content-detail" ref="mainContent">
            <div class="img-wrapper">
              <image :src="wash_clothes_img_apng" class="main-image-ab"></image>
              <div
                class="appearMsg"
                @disappear="minibarGraientDisapperarHanler"
                @appear="minibarGraientApperarHanler"
              ></div>
              <image :src="wash_clothes_img" class="main-image"></image>
            </div>
            <div class="mt51">
              <div class="time-box">
                <text class="time-box-text">00</text>
                <div class="time-box-text time-box-dot-section">
                  <text class="time-box-dot"></text>
                  <text class="time-box-dot"></text>
                </div>
                <text class="time-box-text">58</text>
              </div>
              <text class="left-time-text">剩余时间</text>
            </div>

            <div class="flow-box" ref="handleBox">
              <div class="flow-box-div">
                <div class="flow-bar flow-1"></div>
                <text class="flow-text">洗涤</text>
              </div>
              <div class="flow-box-div">
                <div class="flow-bar flow-2"></div>
                <text class="flow-text">漂洗</text>
              </div>
              <div class="flow-box-div">
                <div class="flow-bar flow-3 bg-ative"></div>
                <text class="flow-text">烘干</text>
              </div>
            </div>
          </div>
        </div>
        <!-- 滑动时需处理的部分---end -->
        <div class="board-box" ref="tempBox">
          <dof-board class="board-wrapper">
            <dof-card class="m-b-10">
              <div class="placeholder-big"></div>
            </dof-card>
            <dof-row class="m-b-10" :gap="16">
              <dof-col>
                <dof-card>
                  <div class="placeholder"></div>
                </dof-card>
              </dof-col>
              <dof-col>
                <dof-card>
                  <div class="placeholder"></div>
                </dof-card>
              </dof-col>
            </dof-row>
            <dof-row class="m-b-10">
              <dof-col>
                <dof-card>
                  <div class="placeholder-big2"></div>
                </dof-card>
              </dof-col>
            </dof-row>
            <!-- <dof-row class="m-b-10" :gap="16">
            <dof-col>
              <dof-card>
                <div class="placeholder"></div>
              </dof-card>
            </dof-col>
            <dof-col>
              <dof-card>
                <div class="placeholder"></div>
              </dof-card>
            </dof-col>
          </dof-row> -->
            <dof-row class="m-b-10">
              <dof-col>
                <dof-card>
                  <div class="placeholder-small"></div>
                </dof-card>
              </dof-col>
            </dof-row>
          </dof-board>
        </div>
        <div class="h-300px"></div>
        <dof-bottom-bar :tabGroups="tabTitles"></dof-bottom-bar>
      </cell>
    </list>
  </div>
</template>

<style scoped>
.wrapper {
  position: relative;
}
.wrapper-background {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 750px;
  height: 750px;
  opacity: 1;
  /* z-index: 1; */
}
.opa0 {
  /* opacity: 0; */
}
.scroller {
  position: relative;
  flex: 1;
  /* background-color: #FFFFFF; */
  width: 750px;
  height: 2000px;
  z-index: 9;
}
.sticky-wrapper {
  background-color: #dff0f6;
}
.statusWrapper {
  margin-top: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.minibar-gradient {
  /* position: fixed; */
  /* top: 0;
  left: 0; */
  height: 40px;
  /* background-color: red; */
  /* z-index: 99999; */
  background-image: linear-gradient(to bottom, #dff0f6, rgba(223, 240, 246, 0));
}
.minibar-gradient-ios {
  height: 40px;
  background-image: linear-gradient(to top, #dff0f6, rgba(223, 240, 246, 0));
}
.h-300px {
  width: 750px;
  height: 0;
  padding-bottom: 300px;
  background-color: #ffffff;
  position: relative;
  top: -2px;
}
.main-content {
  width: 750px;
  /* margin-top: -194px; */
}
.resident-top {
  /* height: 178px; */
  padding-top: 24px;
  background-color: #dff0f6;
}
.m-b-10 {
  margin-bottom: 20px;
}

.placeholder {
  height: 160px;
}
.img-wrapper {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 526px;
  height: 530px;
  margin-top: -25px;
}
.main-image {
  width: 480px;
  height: 480px;
  opacity: 1;
}
.main-image-ab {
  position: absolute;
  width: 526px;
  height: 530px;
  /* top: -25px;
  left: -23px; */
  opacity: 1;
  z-index: 99;
}
.appearMsg {
  position: absolute;
  top: 300px;
  left: 2;
  background-color: transparent;
  width: 750px;
  height: 2px;
  z-index: 100;
  /* margin-bottom: 150px; */
}
.content-detail {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  transition-property: all;
  transition-duration: 0.3s;
  transition-delay: 0s;
  transition-timing-function: cubic-bezier(0.25, 0.1, 0.25, 1);
  transform: scale(1, 1);
}
.placeholder-big {
  height: 242px;
}
.placeholder-big2 {
  height: 480px;
}
.placeholder-small {
  height: 210px;
}
.cold-box {
  padding: 20px 32px;
  background-color: #eadede;
  margin: 24px auto 0;
  border-radius: 40px;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}
.cold-box-dot {
  width: 14px;
  height: 14px;
  border-radius: 14px;
  margin-right: 16px;
  background-color: #00bdb2;
}
.cold-box-text {
  font-size: 28px;
  color: #616c73;
}
.cold-box-line {
  margin: 0 24px;
  width: 2px;
  height: 40px;
  background-color: #c9c9c9;
}
.time-box {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
}
.mt51 {
  margin-top: -51px;
}
.time-box-text {
  font-family: PingFangSC-Medium;
  font-size: 88px;
  color: #1e2e37;
  margin-right: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
}
.fs70 {
  font-size: 70px;
}
.time-box-dot-section {
  width: 20px;
  height: 50px;
}
.time-box-dot {
  width: 10px;
  height: 10px;
  background-color: #1e2e37;
  border-radius: 10px;
}
.left-time-text {
  font-family: PingFangSC-Regular;
  font-size: 24px;
  color: #8e969b;
  margin: 10px 0 56px;
  text-align: center;
}
.mb14 {
  margin-top: 13px;
  margin-bottom: 14px;
}
.flow-box {
  display: flex;
  flex-direction: row;
  margin-bottom: 50px;
}
.flow-box-div {
  margin-right: 4px;
}
.flow-bar {
  width: 100px;
  height: 16px;
  background-color: #e1e1e1;
}
.flow-1 {
  border-top-left-radius: 16px;
  border-bottom-left-radius: 16px;
}
.flow-3 {
  border-top-right-radius: 16px;
  border-bottom-right-radius: 16px;
}
.bg-ative {
  background-color: #29c3ff;
}
.flow-text {
  font-size: 20px;
  color: #616c73;
  margin-top: 10px;
  text-align: center;
}

.sticy-box {
  position: fixed;
  left: 0;
  z-index: 100;
  width: 750px;
  height: 500px;
  opacity: 0;
  transition-property: all;
  transition-duration: 0.2s;
  transition-delay: 0s;
  transition-timing-function: cubic-bezier(0.25, 0.1, 0.25, 1);
}
.sticky-content {
  position: absolute;
  left: 0;
  top: 0;
  width: 750px;
  height: 500px;
  display: flex;
  align-items: center;
}
.cold-box-sticky {
  margin-bottom: 30px;
}
</style>

<script>
import Title from 'src/_mods/title.vue'
import Category from 'src/_mods/catalog'
const dom = weex.requireModule('dom')
import {
  DofMinibar,
  DofGradient,
  DofBoard,
  DofRow,
  DofCol,
  DofCardGroup,
  DofCard,
  DofCardItem,
  DofBottomBar,
  DofTabPage,
  DofStatus
} from 'dolphin-weex-ui'
const modal = weex.requireModule('modal')
const animation = weex.requireModule('animation')
module.exports = {
  components: {
    Title,
    Category,
    DofMinibar,
    DofGradient,
    DofBoard,
    DofRow,
    DofCol,
    DofCardGroup,
    DofCard,
    DofCardItem,
    DofBottomBar,
    DofTabPage,
    DofStatus
  },
  data() {
    return {
      isIos: weex.config.env.platform == 'iOS' ? true : false,
      minibarBg: 'transparent',
      navTabTitles: [
        {
          title: '设备'
        },
        {
          title: '推荐'
        }
      ],
      options: [
        { dotColor: '#3CD456', text: '烘干中 | 智能洗' },
        { dotColor: '#616C73', text: '已离线' }
      ],
      wash_clothes_img: './assets/image/sample/wash-clothes@3x.png',
      wash_clothes_img_apng: './assets/image/sample/wash-clothes-apng.png',
      leftButton: 'http://dolphin-weex-dev.msmartlife.cn/cdn/images/header/icon_back_white@3x.png',
      width: '750',
      height: '700',
      startColor: '#29C3FF',
      endColor: '#ffffff',
      value: '0',
      tabTitles: [
        {
          type: 'power',
          title: 'power',
          text: '开关',
          iconColor: '#00A4F2',
          disabled: false,
          icon: 'http://dolphin-weex-dev.msmartlife.cn/cdn/images/sample/water_heater/calorifier_icon_on@3x.png'
        },
        {
          type: 'timing',
          title: 'timing',
          text: '预约',
          iconColor: '#f2f2f2',
          iconTextColor: '#616C73',
          disabled: false,
          icon:
            'http://dolphin-weex-dev.msmartlife.cn/cdn/images/sample/water_heater/calorifier_icon_timingoffbai@3x.png'
        }
      ],
      preScrollY: 0,
      mainContentHeight: 0,
      titleBarHeight: 0,
      handleBoxTop: 0,
      stickyEleOpacity: 0,
      appearMiniBarGradient: false
    }
  },
  watch: {
    preScrollY(newValue, oldValue) {
      let { mainContentHeight } = this
      console.log('mainContentHeight')
      console.log(mainContentHeight)

      const unitHeight = mainContentHeight / 2
      let scrollTop = newValue * -1
      let opa = parseFloat(1 - parseFloat(scrollTop / unitHeight).toFixed(2)).toFixed(2)
      opa = this.computedNum(opa)
      mainContentHeight = mainContentHeight + mainContentHeight * 1
      // console.log('mainContentHeight')

      let currScale = parseFloat(1 - parseFloat(scrollTop / mainContentHeight).toFixed(2)).toFixed(2)
      currScale = Number(currScale)
      // if (scrollTop >= mainContentHeight) {
      //   currScale = 1
      //   opa = 1
      // }
      if (currScale <= 0.8) {
        currScale = 0.8
      }
      if (currScale >= 1) {
        currScale = 1
      }
      console.log(opa.toString())
      // this.animateMethod(currScale, opa)
      // Utils.throttle(() => {
      //   // console.log(currScale.toString())
      //   this.transformScale = `scale(${currScale}, ${currScale})`
      //   this.animateOpacity = currScale
      // }, 100)
    }
  },
  mounted() {
    this.$nextTick(() => {
      let ele1 = this.$refs.mainContent
      let ele2 = this.$refs.titleBar
      let ele3 = this.$refs.handleBox
      this.getEleHeight(ele1.children[0], 'mainContent')
      // this.getEleHeight(ele2.children[0], 'title')
      // this.getEleHeight(ele3.children[0], 'handleBox')
    })
  },
  methods: {
    computedNum(x) {
      if (x < 0) {
        x = 0
      } else if (x > 1) {
        x = 1
      }
      return Number(x)
    },
    back() {},
    tabChangeHandler(e) {
      const self = this
      const { index } = e
      this.$toast(index)
    },
    animateMethod(tempScale, opa) {
      const ele = this.$refs.mainContent
      if (!ele) return
      animation.transition(
        ele,
        {
          styles: {
            transform: `scale(${tempScale})`,
            opacity: opa
          },
          duration: 0,
          timingFunction: 'linear',
          delay: 0
        },
        function() {}
      )
    },
    minibarGraientDisapperarHanler(e) {
      console.log('不见啦')
      this.minibarBg = '#DFF0F6'
      this.appearMiniBarGradient = true
    },
    minibarGraientApperarHanler(e) {
      console.log('出现啦')
      this.minibarBg = 'transparent'
      this.appearMiniBarGradient = false
    },
    scrollHandler(e) {
      let currScrollY = parseInt(e.contentOffset.y)
      if (currScrollY > this.preScrollY) {
        //页面向下滑
        this.scrollDirection = 'down'
      } else {
        //页面向上滑
        this.scrollDirection = 'up'
      }
      this.preScrollY = currScrollY
      // this.geta()
    },
    getEleHeight(ele, str) {
      let self = this
      dom.getComponentRect(ele, result => {
        let size = result.size || {}
        let height = parseInt(size.height)
        if (!height) {
          self.getEleHeight(ele, str)
        } else {
          if (str == 'mainContent') {
            self.mainContentHeight = height
          } else if (str == 'title') {
            self.titleBarHeight = height
          } else if (str == 'handleBox') {
            self.handleBoxTop = parseFloat(size.top / 2).toFixed(1)
          }
        }
      })
    },
    geta() {
      let { preScrollY, handleBoxTop, titleBarHeight } = this
      let scrollTop = parseInt(preScrollY * -1) - titleBarHeight
      this.stickyEleOpacity = scrollTop != 0 && scrollTop >= handleBoxTop ? 1 : 0
    }
  },

  computed: {
    elementStyle() {
      let { preScrollY, mainContentHeight } = this
      let scrollTop = preScrollY * -1
      let currScale = parseFloat(1 - parseFloat(scrollTop / mainContentHeight).toFixed(2)).toFixed(2)
      if (scrollTop >= mainContentHeight) {
        currScale = 1
      }
      if (currScale <= 0.8) {
        currScale = 0.8
      }
      if (currScale >= 1) {
        currScale = 1
      }
      return {
        transform: `scale(${currScale}, ${currScale})`,
        opacity: currScale
      }
    },
    stickyEleStyle() {
      let { preScrollY, handleBoxTop, titleBarHeight } = this
      let scrollTop = preScrollY * -1 - titleBarHeight
      return {
        opacity: scrollTop != 0 && scrollTop >= handleBoxTop ? 1 : 0
      }
    }
  }
}
</script>
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Last Updated: 4/29/2025, 11:14:45 AM

← 3.1 标题栏（Mini bar） →