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<template> |
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<view class="almost-lottery"> |
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<!-- head --> |
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<image src="../static/lottery/top-bg@3x.jpg" mode="widthFix" class="width100"></image> |
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<view class="almost-lottery__wheel"> |
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<almost-lottery :lottery-size="lotteryConfig.lotterySize" :action-size="lotteryConfig.actionSize" |
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:ring-count="2" :duration="1" :prize-list="prizeList" :prize-index="prizeIndex" |
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@reset-index="prizeIndex = -1" @draw-start="handleDrawStart" @draw-end="handleDrawEnd" |
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@finish="handleDrawFinish" v-if="prizeList.length" /> |
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</view> |
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<view class="almost-lottery__rule"> |
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<view class="rule-head"> |
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<view class="line"></view> |
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<text class="title">中奖名单</text> |
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<view class="line"></view> |
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</view> |
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<!-- |
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<view style="height: 40px;"> |
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<view class="page-section swiper"> |
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<view class="page-section-spacing"> |
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<swiper class="swiper" vertical="true" :indicator-dots="indicatorDots" :autoplay="autoplay" :interval="interval" :duration="duration"> |
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<swiper-item style="height: 40px;"> |
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<view class="swiper-item uni-bg-red">冯绍峰地方是的反手反手电风扇电风扇发是</view> |
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</swiper-item> |
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<swiper-item style="height: 40px;"> |
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<view class="swiper-item uni-bg-green">了看了你别浪费女生了妇女了啥地方了南斯拉夫弄丢了</view> |
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</swiper-item> |
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<swiper-item style="height: 40px;"> |
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<view class="swiper-item uni-bg-blue">沃尔沃二女玩女人温柔我能让你为免费派送费牛棚</view> |
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</swiper-item> |
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</swiper> |
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</view> |
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</view> |
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</view> --> |
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|
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<view class="rule-head"> |
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<view class="line"></view> |
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<text class="title">活动规则</text> |
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<view class="line"></view> |
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</view> |
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<view class="rule-body"> |
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<view class="item"> |
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<view class="number">1</view> |
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<view class="text"> |
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<text>抽奖细则：</text> |
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<text>每人每天拥有{{ freeNumDay }}次抽奖机会，每次消耗{{ goldNum }}金币。</text> |
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</view> |
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</view> |
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<view class="item item-rule"> |
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<view class="number">2</view> |
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<view class="text"> |
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<text>奖励说明：</text> |
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<text style="margin-top: 1px;">1.一等奖1000元加油券(4名)</text> |
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<text style="margin-top: 1px;">2.二等奖500元加油券(12名)</text> |
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<text style="margin-top: 1px;">3.三等奖300元加油券(20名)</text> |
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<text style="margin-top: 1px;">4.参与奖20元(200-20)抵扣券(2000名)</text> |
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</view> |
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</view> |
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<template> |
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<view class="item"> |
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<view class="number">3</view> |
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<view class="text">本次活动由XXXXXXX发起，与Apple.Inc无关。</view> |
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</view> |
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<view class="item"> |
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<view class="number">4</view> |
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<view class="text">苹果公司不是本活动的赞助商且没有以任何形式参与活动。</view> |
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</view> |
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<view class="item"> |
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<view class="number">5</view> |
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<view class="text">本活动仅限17岁以上用户参加。</view> |
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</view> |
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<view class="item"> |
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<view class="number">6</view> |
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<view class="text">本活动最终解释权归XXXXXXX所有。</view> |
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</view> |
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</template> |
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|
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</view> |
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</view> |
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</view> |
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</template> |
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|
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<script> |
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import AlmostLottery from '../../uni_modules/almost-lottery/components/almost-lottery/almost-lottery.vue' |
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export default { |
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name: 'Home', |
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components: { |
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AlmostLottery |
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}, |
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data() { |
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return { |
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// 开启调试模式 |
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isDev: true, |
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background: ['color1', 'color2', 'color3'], |
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indicatorDots: false, |
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autoplay: true, |
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interval: 2000, |
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duration: 500, |
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// 以下是转盘配置相关数据 |
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lotteryConfig: { |
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// 抽奖转盘的整体尺寸，单位rpx |
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lotterySize: 600, |
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// 抽奖按钮的尺寸，单位rpx |
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actionSize: 200 |
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}, |
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|
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// 以下是转盘 UI 配置 |
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// 转盘外环图 |
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lotteryBg: 'https://raw.githubusercontent.com/ialmost/almost-components_uniapp/dev/Lottery/almost-lottery_sample/static/lottery-bg.png', |
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// 抽奖按钮图 |
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actionBg: 'https://raw.githubusercontent.com/ialmost/almost-components_uniapp/dev/Lottery/almost-lottery_sample/static/action-bg.png', |
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|
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// 以下是奖品配置数据 |
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// 奖品数据 |
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prizeList: [], |
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// 奖品是否设有库存 |
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onStock: true, |
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// 中奖下标 |
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prizeIndex: -1, |
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|
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// 是否正在抽奖中，避免重复触发 |
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prizeing: false, |
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|
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// 以下为中奖概率有关数据 |
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// 是否由前端控制概率，默认不开启，强烈建议由后端控制 |
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onFrontend: false, |
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// 权重随机数的最大值 |
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prizeWeightMax: 0, |
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// 权重数组 |
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prizeWeightArr: [], |
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|
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// 以下为业务需求有关示例数据 |
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// 金币余额 |
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goldCoin: 600, |
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// 当日免费抽奖次数余额 |
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freeNum: 3, |
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// 每次消耗的金币数 |
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goldNum: 20, |
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// 每天免费抽奖次数 |
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freeNumDay: 3 |
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} |
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}, |
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computed: { |
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isApple() { |
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return uni.getSystemInfoSync().platform === 'ios' |
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} |
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}, |
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methods: { |
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|
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changeIndicatorDots(e) { |
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this.indicatorDots = !this.indicatorDots |
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}, |
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changeAutoplay(e) { |
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this.autoplay = !this.autoplay |
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}, |
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intervalChange(e) { |
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this.interval = e.target.value |
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}, |
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durationChange(e) { |
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this.duration = e.target.value |
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}, |
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// 重新生成 |
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handleInitCanvas() { |
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|
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|
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this.prizeList = [] |
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this.getPrizeList() |
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}, |
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// 获取奖品列表 |
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async getPrizeList() { |
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uni.showLoading({ |
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title: '奖品准备中...' |
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}) |
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|
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// 等待接口返回的数据进一步处理 |
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let res = await this.requestApiGetPrizeList() |
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console.log('获取奖品列表', res) |
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|
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if (res.ok) { |
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let data = res.data |
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if (data.length) { |
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this.prizeList = data |
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console.log('已获取到奖品列表数据，开始绘制抽奖转盘') |
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|
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// 如果开启了前端控制概率 |
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// 得出权重的最大值并生成权重数组 |
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if (this.onFrontend) { |
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// 生成权重数组并排序取得最大值 |
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this.prizeWeightArr = this.prizeList.map((item) => item.prizeWeight) |
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let prizeWeightArrSort = [...this.prizeWeightArr] |
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prizeWeightArrSort.sort((a, b) => b - a) |
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this.prizeWeightMax = prizeWeightArrSort[0] |
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} |
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} |
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} else { |
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uni.hideLoading() |
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uni.showToast({ |
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title: '获取奖品失败', |
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mask: true, |
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icon: 'none' |
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}) |
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} |
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}, |
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// 模拟请求 获取奖品列表 接口， |
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// 注意这里返回的是一个 Promise |
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// 大哥，这里只是模拟，别告诉我你不会对接自己的接口 |
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requestApiGetPrizeList() { |
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return new Promise((resolve, reject) => { |
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let requestTimer = setTimeout(() => { |
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clearTimeout(requestTimer) |
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requestTimer = null |
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|
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// prizeStock 奖品库存 |
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// prizeWeight 中奖概率，数值越大中奖概率越高，权重一样时随机中奖 |
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resolve({ |
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ok: true, |
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data: [{ |
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prizeId: 1, |
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prizeName: '0.1元现金', |
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prizeStock: 10, |
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prizeWeight: 200, |
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prizeImage: '/static/img/order3.png' |
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}, |
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{ |
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prizeId: 2, |
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prizeName: '10元现金', |
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prizeStock: 0, |
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prizeWeight: 50, |
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prizeImage: 'https://vkceyugu.cdn.bspapp.com/VKCEYUGU-dc-site/56f085e0-bcfe-11ea-b244-a9f5e5565f30.png' |
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}, |
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{ |
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prizeId: 3, |
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prizeName: '5元话费', |
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prizeStock: 1, |
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prizeWeight: 80, |
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prizeImage: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAABCElEQVRoge3YMa4BURSH8Y8o7UAp0WgkotBZwluAfhqlZSgUGr23ENUUCpppJnTswAIUSCaTiziZJ8d9/193zdzrfMltABF5plb+oLscDoAV0Pn8OC/lwDhL0k35QT3wstcIuM61Cj0IhXiNuAvOFwr5SgrxRiHeKMSbhnHfAVgU1i1gajhnBpwK6wnQtgxkDTlmSTq/L7rLYQ9byG+WpLvCOT8YQ6K5WgrxRiHeKMQbhXijEG8U4o1CvIkmxPrDquwMrI37KlFJSJake2BUxVlW0VytaEKsV6t5+8Ohak3rRmtIH9hav/QvRHO1FOKNQrwJheQfn+I9wflCIeNHLzuQc51PRP6rC1ZeIm1I8cC5AAAAAElFTkSuQmCC' |
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}, |
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{ |
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prizeId: 4, |
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prizeName: '50元现金', |
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prizeStock: 0, |
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prizeWeight: 10, |
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prizeImage: 'data:image/png;base64,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' |
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}, |
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{ |
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prizeId: 5, |
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prizeName: '1卷抽纸', |
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prizeStock: 3, |
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prizeWeight: 3000, |
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prizeImage: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAABCElEQVRoge3YMa4BURSH8Y8o7UAp0WgkotBZwluAfhqlZSgUGr23ENUUCpppJnTswAIUSCaTiziZJ8d9/193zdzrfMltABF5plb+oLscDoAV0Pn8OC/lwDhL0k35QT3wstcIuM61Cj0IhXiNuAvOFwr5SgrxRiHeKMSbhnHfAVgU1i1gajhnBpwK6wnQtgxkDTlmSTq/L7rLYQ9byG+WpLvCOT8YQ6K5WgrxRiHeKMQbhXijEG8U4o1CvIkmxPrDquwMrI37KlFJSJake2BUxVlW0VytaEKsV6t5+8Ohak3rRmtIH9hav/QvRHO1FOKNQrwJheQfn+I9wflCIeNHLzuQc51PRP6rC1ZeIm1I8cC5AAAAAElFTkSuQmCC' |
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}, |
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{ |
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prizeId: 6, |
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prizeName: '0.2元现金', |
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prizeStock: 8, |
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prizeWeight: 120, |
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prizeImage: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAABCElEQVRoge3YMa4BURSH8Y8o7UAp0WgkotBZwluAfhqlZSgUGr23ENUUCpppJnTswAIUSCaTiziZJ8d9/193zdzrfMltABF5plb+oLscDoAV0Pn8OC/lwDhL0k35QT3wstcIuM61Cj0IhXiNuAvOFwr5SgrxRiHeKMSbhnHfAVgU1i1gajhnBpwK6wnQtgxkDTlmSTq/L7rLYQ9byG+WpLvCOT8YQ6K5WgrxRiHeKMQbhXijEG8U4o1CvIkmxPrDquwMrI37KlFJSJake2BUxVlW0VytaEKsV6t5+8Ohak3rRmtIH9hav/QvRHO1FOKNQrwJheQfn+I9wflCIeNHLzuQc51PRP6rC1ZeIm1I8cC5AAAAAElFTkSuQmCC' |
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}, |
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{ |
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prizeId: 7, |
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prizeName: '谢谢参与', |
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prizeStock: 100, |
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prizeWeight: 10000, |
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prizeImage: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAABCElEQVRoge3YMa4BURSH8Y8o7UAp0WgkotBZwluAfhqlZSgUGr23ENUUCpppJnTswAIUSCaTiziZJ8d9/193zdzrfMltABF5plb+oLscDoAV0Pn8OC/lwDhL0k35QT3wstcIuM61Cj0IhXiNuAvOFwr5SgrxRiHeKMSbhnHfAVgU1i1gajhnBpwK6wnQtgxkDTlmSTq/L7rLYQ9byG+WpLvCOT8YQ6K5WgrxRiHeKMQbhXijEG8U4o1CvIkmxPrDquwMrI37KlFJSJake2BUxVlW0VytaEKsV6t5+8Ohak3rRmtIH9hav/QvRHO1FOKNQrwJheQfn+I9wflCIeNHLzuQc51PRP6rC1ZeIm1I8cC5AAAAAElFTkSuQmCC' |
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}, |
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{ |
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prizeId: 8, |
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prizeName: '100金币', |
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prizeStock: 100, |
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prizeWeight: 3000, |
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prizeImage: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAABCElEQVRoge3YMa4BURSH8Y8o7UAp0WgkotBZwluAfhqlZSgUGr23ENUUCpppJnTswAIUSCaTiziZJ8d9/193zdzrfMltABF5plb+oLscDoAV0Pn8OC/lwDhL0k35QT3wstcIuM61Cj0IhXiNuAvOFwr5SgrxRiHeKMSbhnHfAVgU1i1gajhnBpwK6wnQtgxkDTlmSTq/L7rLYQ9byG+WpLvCOT8YQ6K5WgrxRiHeKMQbhXijEG8U4o1CvIkmxPrDquwMrI37KlFJSJake2BUxVlW0VytaEKsV6t5+8Ohak3rRmtIH9hav/QvRHO1FOKNQrwJheQfn+I9wflCIeNHLzuQc51PRP6rC1ZeIm1I8cC5AAAAAElFTkSuQmCC' |
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} |
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] |
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}) |
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}, 2000) |
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}) |
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}, |
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// 本次抽奖开始 |
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handleDrawStart() { |
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console.log('触发抽奖按钮') |
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if (this.prizeing) return |
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this.prizeing = true |
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|
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// 还有免费数次或者剩余金币足够抽一次 |
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if (this.freeNum > 0 || this.goldCoin >= this.goldNum) { |
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|
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// 更新免费次数或金币余额 |
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if (this.freeNum > 0) { |
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this.freeNum-- |
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} else if (this.goldCoin >= this.goldNum) { |
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this.goldCoin -= this.goldNum |
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} |
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|
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this.tryLotteryDraw() |
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} else { |
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this.prizeing = false |
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uni.showModal({ |
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title: '金币不足', |
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content: '是否前往赚取金币？', |
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success: (res) => { |
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// 这里需要根据业务需求处理，一般情况下会引导用户前往赚取金币的页面 |
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console.log('金币不足', res) |
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} |
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}) |
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} |
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}, |
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// 尝试发起抽奖 |
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tryLotteryDraw() { |
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console.log('旋转开始，获取中奖下标......') |
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// 判断是否由前端控制概率 |
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if (this.onFrontend) { |
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this.localGetPrizeIndex() |
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} else { |
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this.remoteGetPrizeIndex() |
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} |
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}, |
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// 本地获取中奖下标 |
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localGetPrizeIndex() { |
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console.warn('###当前处于前端控制中奖概率，安全起见，强烈建议由后端控制###') |
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// 前端控制概率的情况下，需要拿到最接近随机权重且大于随机权重的值 |
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// 后端控制概率的情况下，通常会直接返回 prizeId |
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if (!this.prizeWeightMax) { |
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console.warn('###当前已开启前端控制中奖概率，但是奖品数据列表中的 prizeWeight 参数似乎配置不正确###') |
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return |
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} |
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console.log('当前权重最大值为 =>', this.prizeWeightMax) |
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|
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// 注意这里使用了 Math.ceil，如果某个权重的值为 0，则始终无法中奖 |
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let randomWeight = Math.ceil(Math.random() * this.prizeWeightMax) |
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console.log('本次权重随机数 =>', randomWeight) |
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|
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// 生成大于等于随机权重的数组 |
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let tempMaxArrs = [] |
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this.prizeList.forEach((item) => { |
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if (item.prizeWeight >= randomWeight) { |
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tempMaxArrs.push(item.prizeWeight) |
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} |
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}) |
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console.log('tempMaxArrs', tempMaxArrs) |
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|
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// 如果大于随机权重的数组有值，先对这个数组排序然后取值 |
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// 反之新建一个临时的包含所有权重的已排序数组，然后取值 |
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let tempMaxArrsLen = tempMaxArrs.length |
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if (tempMaxArrsLen) { |
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tempMaxArrs.sort((a, b) => a - b) |
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// 取值时，如果存在多个值，分两种情况 |
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if (tempMaxArrsLen > 1) { |
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// 检查是否存在重复的值 |
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let sameCount = 0 |
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for (let i = 0; i < tempMaxArrs.length; i++) { |
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if (tempMaxArrs[i] === tempMaxArrs[0]) { |
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sameCount++ |
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} |
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} |
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|
||||
// 值不相等的情况下取最接近的值，也就是第1个值 |
||||
if (sameCount === 1) { |
||||
this.prizeIndex = this.prizeWeightArr.indexOf(tempMaxArrs[0]) |
||||
} else { |
||||
// 存在值相等时，随机取值，当然这里你可以自己决定是否随机取值 |
||||
let sameWeight = tempMaxArrs[0] |
||||
let sameWeightArr = [] |
||||
let sameWeightItem = {} |
||||
this.prizeWeightArr.forEach((item, index) => { |
||||
if (item === sameWeight) { |
||||
sameWeightArr.push({ |
||||
prizeWeight: item, |
||||
index |
||||
}) |
||||
} |
||||
}) |
||||
console.log('sameWeightArr', sameWeightArr) |
||||
sameWeightItem = sameWeightArr[Math.floor(Math.random() * sameWeightArr.length)] |
||||
console.log('sameWeightItem', sameWeightItem) |
||||
this.prizeIndex = sameWeightItem.index |
||||
} |
||||
} else { |
||||
this.prizeIndex = this.prizeWeightArr.indexOf(tempMaxArrs[0]) |
||||
} |
||||
} |
||||
|
||||
console.log('本次抽中奖品 =>', this.prizeList[this.prizeIndex].prizeName) |
||||
|
||||
// 如果奖品设有库存 |
||||
if (this.onStock) { |
||||
console.log('本次奖品库存 =>', this.prizeList[this.prizeIndex].prizeStock) |
||||
} |
||||
}, |
||||
// 远程请求接口获取中奖下标 |
||||
// 大哥，这里只是模拟，别告诉我你不会对接自己的接口 |
||||
remoteGetPrizeIndex() { |
||||
console.warn('###当前处于模拟的请求接口，并返回了中奖信息###') |
||||
// 模拟请求接口获取中奖信息 |
||||
let stoTimer = setTimeout(() => { |
||||
clearTimeout(stoTimer) |
||||
stoTimer = null |
||||
|
||||
let list = [...this.prizeList] |
||||
|
||||
// 这里随机产生的 prizeId 是模拟后端返回的 prizeId |
||||
let prizeId = Math.floor(Math.random() * list.length + 1) |
||||
|
||||
// 拿到后端返回的 prizeId 后，开始循环比对得出那个中奖的数据 |
||||
for (let i = 0; i < list.length; i++) { |
||||
let item = list[i] |
||||
if (item.prizeId === prizeId) { |
||||
// 中奖下标 |
||||
this.prizeIndex = i |
||||
break |
||||
} |
||||
} |
||||
|
||||
console.log('本次抽中奖品 =>', this.prizeList[this.prizeIndex].prizeName) |
||||
|
||||
// 如果奖品设有库存 |
||||
if (this.onStock) { |
||||
console.log('本次奖品库存 =>', this.prizeList[this.prizeIndex].prizeStock) |
||||
} |
||||
}, 200) |
||||
}, |
||||
// 本次抽奖结束 |
||||
handleDrawEnd() { |
||||
console.log('旋转结束，执行拿到结果后到逻辑') |
||||
|
||||
// 旋转结束后，开始处理拿到结果后的逻辑 |
||||
this.prizeing = false |
||||
let prizeName = this.prizeList[this.prizeIndex].prizeName |
||||
let tipContent = '' |
||||
|
||||
if (prizeName === '谢谢参与') { |
||||
tipContent = '很遗憾，没有中奖，请再接再厉！' |
||||
} else { |
||||
// 如果奖品设有库存 |
||||
if (this.onStock) { |
||||
let prizeStock = this.prizeList[this.prizeIndex].prizeStock |
||||
tipContent = prizeStock ? `恭喜您，获得 ${prizeName}` : `很抱歉，您来晚了，当前奖品 ${prizeName} 已无库存` |
||||
} else { |
||||
tipContent = `恭喜您，获得 ${prizeName} ！` |
||||
} |
||||
} |
||||
|
||||
uni.showModal({ |
||||
content: tipContent, |
||||
showCancel: false |
||||
}) |
||||
}, |
||||
// 抽奖转盘绘制完成 |
||||
handleDrawFinish(res) { |
||||
console.log('抽奖转盘绘制完成', res) |
||||
|
||||
uni.showToast({ |
||||
title: res.msg, |
||||
mask: true, |
||||
icon: 'none' |
||||
}) |
||||
} |
||||
}, |
||||
onLoad() { |
||||
this.handleInitCanvas() |
||||
}, |
||||
onUnload() { |
||||
uni.hideLoading() |
||||
} |
||||
} |
||||
</script> |
||||
|
||||
<style lang="scss" scoped> |
||||
.almost-lottery { |
||||
flex: 1; |
||||
background-color: #FF893F; |
||||
} |
||||
|
||||
.almost-lottery__wheel { |
||||
margin-top: 30rpx; |
||||
text-align: center; |
||||
|
||||
.almost-lottery__count { |
||||
display: flex; |
||||
flex-direction: column; |
||||
justify-content: center; |
||||
align-items: center; |
||||
text-align: center; |
||||
padding: 40rpx 0; |
||||
} |
||||
|
||||
.text { |
||||
color: #FFFFFF; |
||||
font-size: 24rpx; |
||||
} |
||||
} |
||||
|
||||
.almost-lottery__rule { |
||||
padding: 0 28rpx; |
||||
color: #FFF8CB; |
||||
|
||||
.rule-head { |
||||
display: flex; |
||||
justify-content: space-around; |
||||
align-items: center; |
||||
margin: 40rpx 0; |
||||
|
||||
.line { |
||||
flex: 1; |
||||
height: 1px; |
||||
background-color: #FFF3A5; |
||||
} |
||||
|
||||
.title { |
||||
width: 280rpx; |
||||
color: #F63857; |
||||
line-height: 70rpx; |
||||
text-align: center; |
||||
margin: 0 20rpx; |
||||
border-radius: 8rpx; |
||||
background-image: linear-gradient(0deg, rgba(255, 242, 158, 1), rgba(255, 244, 168, 1)); |
||||
} |
||||
} |
||||
|
||||
.rule-body { |
||||
color: #FFF8CB; |
||||
font-size: 24rpx; |
||||
padding: 10rpx 0 40rpx; |
||||
|
||||
.item { |
||||
display: flex; |
||||
margin-bottom: 10rpx; |
||||
} |
||||
|
||||
.number { |
||||
position: relative; |
||||
top: 4rpx; |
||||
width: 28rpx; |
||||
height: 28rpx; |
||||
line-height: 28rpx; |
||||
text-align: center; |
||||
border-radius: 50%; |
||||
margin-right: 10rpx; |
||||
} |
||||
|
||||
.text { |
||||
flex: 1; |
||||
margin-top: 1px; |
||||
} |
||||
|
||||
.item-rule .text { |
||||
display: flex; |
||||
margin-top: 1px; |
||||
flex-direction: column; |
||||
} |
||||
} |
||||
} |
||||
</style> |
||||
|
After Width: | Height: | Size: 1.4 KiB |
|
After Width: | Height: | Size: 2.4 KiB |
|
After Width: | Height: | Size: 3.9 KiB |
|
After Width: | Height: | Size: 4.4 KiB |
|
After Width: | Height: | Size: 7.7 KiB |
|
After Width: | Height: | Size: 19 KiB |
|
After Width: | Height: | Size: 4.6 KiB |
|
After Width: | Height: | Size: 9.4 KiB |
|
After Width: | Height: | Size: 19 KiB |
|
After Width: | Height: | Size: 40 KiB |
|
After Width: | Height: | Size: 34 KiB |
|
After Width: | Height: | Size: 77 KiB |
|
After Width: | Height: | Size: 92 KiB |
|
After Width: | Height: | Size: 232 KiB |
|
After Width: | Height: | Size: 214 KiB |
@ -0,0 +1,132 @@ |
||||
## 1.8.5（2021-09-13） |
||||
本次更新： |
||||
- 修复一个已知问题 |
||||
## 1.8.4（2021-09-12） |
||||
本次更新： |
||||
- 调整 `strFontColor` 为 `strFontColors`，现在可以设置每个区块的文字颜色，详见文档说明 |
||||
## 1.8.3（2021-09-12） |
||||
本次更新： |
||||
- 修复因 `1.8.0` 改动引起的文字方向、无奖品图时绘制异常的问题 |
||||
- 新增 `imgDrawed` 是否绘制奖品图片的配置项 ，默认为 `true` |
||||
## 1.8.2（2021-09-10） |
||||
本次更新： |
||||
**不兼容旧版本的更新** |
||||
- 移除配置项 `strKey` 字段 |
||||
- 调整 `prizeList` 结构 |
||||
## 1.8.1（2021-09-06） |
||||
本次更新： |
||||
- 修复 `hbx3.1.22` 在小程序平台处理 `id-name` 存在解析错误的问题 |
||||
## 1.8.0（2021-09-06） |
||||
本次更新： |
||||
**该版本更新涉及破坏性的变更，请重新查看 `API - Props` 的部分** |
||||
- `px` 全面调整为 `rpx` 单位，多个`Props` 的参数相应调整，请查看文档 |
||||
- 新增 `pixelRatio` 参数，该参数为设计稿的设备像素比基准值，默认为 `2` 倍素 |
||||
## 1.7.18（2021-09-05） |
||||
本次更新： |
||||
- 修复一个已知问题 |
||||
## 1.7.17（2021-08-23） |
||||
本次更新： |
||||
- 更新示例项目 |
||||
## 1.7.16（2021-08-14） |
||||
本次更新： |
||||
- 更新示例项目 |
||||
## 1.7.15（2021-08-03） |
||||
本次更新： |
||||
- 新增文字竖向展示的功能，详见文档说明 |
||||
## 1.7.13（2021-08-02） |
||||
本次更新： |
||||
- 更新文档 |
||||
## 1.7.12（2021-07-30） |
||||
本次更新： |
||||
- 修复示例项目的已知问题 |
||||
- 现已提供Almost-Lottery抽奖转盘的uniCloud云端一体页面模板 |
||||
- 现已提供Almost-Lottery抽奖转盘云端一体页面配套的Admin配置中心 |
||||
## 1.7.11（2021-07-22） |
||||
本次更新： |
||||
- 修复部分安卓手机文字大小异常的问题 |
||||
- 字段 `strHeightMultiple` 更换为 `strLineHeight` |
||||
## 1.7.10（2021-07-12） |
||||
本次更新： |
||||
- 修复奖品名称 `name` 为空字符串时无法成功绘制转盘的问题 |
||||
- 新增 `prizeNameDrawed` 是否绘制奖品名称的配置项，现在可以仅展示奖品图片了 |
||||
## 1.7.9（2021-07-09） |
||||
本次更新： |
||||
- 优化组件内部代码 |
||||
- 修复奖品图片已然是 `base64` 格式时导致转盘绘制失败的问题 |
||||
- 文档新增QQ群号，让沟通更便捷 |
||||
## 1.7.8（2021-07-08） |
||||
本次更新： |
||||
- 调整 `Canvas` 默认宽高为 `280` |
||||
## 1.7.7（2021-07-08） |
||||
本次更新： |
||||
- 新增多个配置项，满足更多自定义需求 |
||||
- 优化多行文本情况下非中文字符的字节处理 |
||||
- 修复偶发的第一条数据文本不居中显示的问题 |
||||
## 1.7.6（2021-07-02） |
||||
本次更新： |
||||
- 调整 `imageWidth` 、 `imageHeight` 字段为 `imgWidth` 、 `imgHeight` |
||||
- 更新示例项目 |
||||
## 1.7.5（2021-07-01） |
||||
本次更新： |
||||
- 新增配置项 `imgMarginStr` 奖品图片距离奖品文字的距离 |
||||
## 1.7.4（2021-06-28） |
||||
本次更新： |
||||
- 新增轮盘旋转或指针旋转配置项 |
||||
- 转盘内置的外环图片以及按钮图片统一调整为 `image` 展示 |
||||
- 更新相关文档说明 |
||||
## 1.7.3（2021-06-16） |
||||
本次更新： |
||||
- 优化错误提示 |
||||
- 优化示例项目 |
||||
- 优化文档说明 |
||||
## 1.7.2（2021-06-11） |
||||
本次更新： |
||||
- 新增 `canvasId` 参数配置项，多画板情况下需要配置不同的 `canvasId` |
||||
- 优化多画板情况下的缓存功能 |
||||
- 优化示例项目 |
||||
- 修改文档说明 |
||||
## 1.7.1（2021-06-10） |
||||
本次更新： |
||||
- 优化示例项目中的注释 |
||||
## 1.7.0（2021-06-04） |
||||
本次更新： |
||||
- 修复 `1.6.1` 引起的多行奖品文字行高异常的问题 |
||||
- 新增配置转盘外环和抽奖按钮图片的功能，详见文档说明 |
||||
- 更新示例项目，新增抽奖次数等业务有关的逻辑供参考 |
||||
## 1.6.1（2021-05-28） |
||||
本次更新： |
||||
- 修复小程序平台画板模糊的问题 |
||||
## 1.6.0（2021-05-28） |
||||
本次更新： |
||||
- 新增奖品区块是否开启描边的配置项，默认不开启 |
||||
- 调整画板缓存为默认不开启 |
||||
- 优化代码 |
||||
- 优化文档说明 |
||||
- 更新示例项目并修改部分注释 |
||||
## 1.5.13（2021-05-22） |
||||
本次更新： |
||||
- 优化文档说明 |
||||
- 更新示例项目 |
||||
## 1.5.12（2021-05-22） |
||||
本次更新： |
||||
- 新增配置项 `strokeColor` 奖品区块边框颜色 |
||||
- 更新文档说明 |
||||
## 1.5.11（2021-05-19） |
||||
本次更新： |
||||
- 新增`strMarginOutside`参数，用于设置奖品文字距离边缘的距离 |
||||
- 修复奖品文字在某些情况下不是居中显示的问题 |
||||
## 1.5.10（2021-05-19） |
||||
本次更新： |
||||
- 修复示例项目中权重值相同时的取值逻辑 |
||||
## 1.5.9（2021-05-14） |
||||
本次更新： |
||||
- 调整代码，优化小程序端的展示 |
||||
## 1.5.8（2021-05-12） |
||||
本次更新： |
||||
- 文档增加预警提示：不再维护非 `uni_modules` 模式下的版本 |
||||
## 1.5.7（2021-05-12） |
||||
本次更新： |
||||
- 修复小程序平台奖品名称不清晰的问题 |
||||
## 1.5.6（2021-03-18） |
||||
本次更新： |
||||
- 适配 uni_modules 插件模式 |
||||
@ -0,0 +1,970 @@ |
||||
<template> |
||||
<view class="almost-lottery"> |
||||
<view class="almost-lottery__wrap" :style="{ width: lotterySize + 'rpx', height: lotterySize + 'rpx' }"> |
||||
<view class="lottery-action" :style="{ width: actionSize + 'rpx', height: actionSize + 'rpx', left: canvasMarginOutside + 'rpx' }"></view> |
||||
<view class="str-margin-outside" :style="{ left: strMarginOutside + 'rpx' }"></view> |
||||
<view class="img-margin-str" :style="{ left: imgMarginStr + 'rpx' }"></view> |
||||
<view class="img-size" :style="{ width: imgWidth + 'rpx', height: imgHeight + 'rpx' }"></view> |
||||
<template v-if="lotteryImg"> |
||||
<image |
||||
class="almost-lottery__bg" |
||||
mode="widthFix" |
||||
:src="lotteryBg" |
||||
:style="{ |
||||
width: lotteryPxSize + 'px', |
||||
height: lotteryPxSize + 'px' |
||||
}" |
||||
></image> |
||||
<image |
||||
class="almost-lottery__canvas-img" |
||||
mode="widthFix" |
||||
:src="lotteryImg" |
||||
:style="{ |
||||
width: canvasPxSize + 'px', |
||||
height: canvasPxSize + 'px', |
||||
transform: `rotate(${canvasAngle + targetAngle}deg)`, |
||||
transitionDuration: `${transitionDuration}s` |
||||
}" |
||||
></image> |
||||
<image |
||||
class="almost-lottery__action almost-lottery__action-bg" |
||||
mode="widthFix" |
||||
:src="actionBg" |
||||
:style="{ |
||||
width: actionPxSize + 'px', |
||||
height: actionPxSize + 'px', |
||||
transform: `rotate(${actionAngle + targetActionAngle}deg)`, |
||||
transitionDuration: `${transitionDuration}s` |
||||
}" |
||||
@click="handleActionStart" |
||||
></image> |
||||
</template> |
||||
|
||||
<!-- 正在绘制转盘时的提示文本 --> |
||||
<text class="almost-lottery__tip" v-else>{{ almostLotteryTip }}</text> |
||||
</view> |
||||
|
||||
<!-- 为了兼容 app 端 ctx.measureText 所需的标签 --> |
||||
<text class="almost-lottery__measureText" :style="{ fontSize: higtFontSize + 'px' }">{{ measureText }}</text> |
||||
|
||||
<!-- #ifdef MP-ALIPAY --> |
||||
<canvas |
||||
:class="className" |
||||
:id="canvasId" |
||||
:width="higtCanvasSize" |
||||
:height="higtCanvasSize" |
||||
:style="{ |
||||
width: higtCanvasSize + 'px', |
||||
height: higtCanvasSize + 'px' |
||||
}" |
||||
/> |
||||
<!-- #endif --> |
||||
<!-- #ifndef MP-ALIPAY --> |
||||
<canvas |
||||
:class="className" |
||||
:canvas-id="canvasId" |
||||
:width="higtCanvasSize" |
||||
:height="higtCanvasSize" |
||||
:style="{ |
||||
width: higtCanvasSize + 'px', |
||||
height: higtCanvasSize + 'px' |
||||
}" |
||||
/> |
||||
<!-- #endif --> |
||||
</view> |
||||
</template> |
||||
|
||||
<script> |
||||
const systemInfo = uni.getSystemInfoSync() |
||||
import { getStore, setStore, clearStore, clacTextLen, downloadFile, pathToBase64 } from '@/uni_modules/almost-lottery/utils/almost-utils.js' |
||||
export default { |
||||
name: 'AlmostLottery', |
||||
props: { |
||||
// 设计稿的像素比基准值 |
||||
pixelRatio: { |
||||
type: Number, |
||||
default: 2 |
||||
}, |
||||
// canvas 标识 |
||||
canvasId: { |
||||
type: String, |
||||
default: 'almostLottery' |
||||
}, |
||||
// 抽奖转盘的整体尺寸 |
||||
lotterySize: { |
||||
type: Number, |
||||
default: 600 |
||||
}, |
||||
// 抽奖按钮的尺寸 |
||||
actionSize: { |
||||
type: Number, |
||||
default: 200 |
||||
}, |
||||
// canvas边缘距离转盘边缘的距离 |
||||
canvasMarginOutside: { |
||||
type: Number, |
||||
default: 90 |
||||
}, |
||||
// 奖品列表 |
||||
prizeList: { |
||||
type: Array, |
||||
required: true, |
||||
validator: (value) => { |
||||
return value.length > 1 |
||||
} |
||||
}, |
||||
// 中奖奖品在列表中的下标 |
||||
prizeIndex: { |
||||
type: Number, |
||||
required: true |
||||
}, |
||||
// 奖品区块对应背景颜色 |
||||
colors: { |
||||
type: Array, |
||||
default: () => [ |
||||
'#FFFFFF', |
||||
'#FFBF05' |
||||
] |
||||
}, |
||||
// 转盘外环背景图 |
||||
lotteryBg: { |
||||
type: String, |
||||
default: '/uni_modules/almost-lottery/static/almost-lottery/almost-lottery__bg2x.png' |
||||
}, |
||||
// 抽奖按钮背景图 |
||||
actionBg: { |
||||
type: String, |
||||
default: '/uni_modules/almost-lottery/static/almost-lottery/almost-lottery__action2x.png' |
||||
}, |
||||
// 是否绘制奖品名称 |
||||
prizeNameDrawed: { |
||||
type: Boolean, |
||||
default: true |
||||
}, |
||||
// 是否开启奖品区块描边 |
||||
stroked: { |
||||
type: Boolean, |
||||
default: false |
||||
}, |
||||
// 描边颜色 |
||||
strokeColor: { |
||||
type: String, |
||||
default: '#FFBF05' |
||||
}, |
||||
// 旋转的类型 |
||||
rotateType: { |
||||
type: String, |
||||
default: 'roulette' |
||||
}, |
||||
// 旋转动画时间 单位s |
||||
duration: { |
||||
type: Number, |
||||
default: 8 |
||||
}, |
||||
// 旋转的圈数 |
||||
ringCount: { |
||||
type: Number, |
||||
default: 8 |
||||
}, |
||||
// 指针位置 |
||||
pointerPosition: { |
||||
type: String, |
||||
default: 'edge', |
||||
validator: (value) => { |
||||
return value === 'edge' || value === 'middle' |
||||
} |
||||
}, |
||||
// 文字方向 |
||||
strDirection: { |
||||
type: String, |
||||
default: 'horizontal', |
||||
validator: (value) => { |
||||
return value === 'horizontal' || value === 'vertical' |
||||
} |
||||
}, |
||||
// 字体颜色 |
||||
strFontColors: { |
||||
type: Array, |
||||
default: () => [ |
||||
'#FFBF05', |
||||
'#FFFFFF' |
||||
] |
||||
}, |
||||
// 文字的大小 |
||||
strFontSize: { |
||||
type: Number, |
||||
default: 24 |
||||
}, |
||||
// 奖品文字距离边缘的距离 |
||||
strMarginOutside: { |
||||
type: Number, |
||||
default: 0 |
||||
}, |
||||
// 奖品图片距离奖品文字的距离 |
||||
imgMarginStr: { |
||||
type: Number, |
||||
default: 60 |
||||
}, |
||||
// 奖品文字多行情况下的行高 |
||||
strLineHeight: { |
||||
type: Number, |
||||
default: 1.2 |
||||
}, |
||||
// 奖品文字总长度限制 |
||||
strMaxLen: { |
||||
type: Number, |
||||
default: 12 |
||||
}, |
||||
// 奖品文字多行情况下第一行文字长度 |
||||
strLineLen: { |
||||
type: Number, |
||||
default: 6 |
||||
}, |
||||
// 奖品图片的宽 |
||||
imgWidth: { |
||||
type: Number, |
||||
default: 50 |
||||
}, |
||||
// 奖品图片的高 |
||||
imgHeight: { |
||||
type: Number, |
||||
default: 50 |
||||
}, |
||||
// 是否绘制奖品图片 |
||||
imgDrawed: { |
||||
type: Boolean, |
||||
default: true |
||||
}, |
||||
// 转盘绘制成功的提示 |
||||
successMsg: { |
||||
type: String, |
||||
default: '奖品准备就绪，快来参与抽奖吧' |
||||
}, |
||||
// 转盘绘制失败的提示 |
||||
failMsg: { |
||||
type: String, |
||||
default: '奖品仍在准备中，请稍后再来...' |
||||
}, |
||||
// 是否开启画板的缓存 |
||||
canvasCached: { |
||||
type: Boolean, |
||||
default: false |
||||
} |
||||
}, |
||||
data() { |
||||
return { |
||||
// 画板className |
||||
className: 'almost-lottery__canvas', |
||||
// 抽奖转盘的整体px尺寸 |
||||
lotteryPxSize: 0, |
||||
// 画板的px尺寸 |
||||
canvasPxSize: 0, |
||||
// 抽奖按钮的px尺寸 |
||||
actionPxSize: 0, |
||||
// 奖品文字距离转盘边缘的距离 |
||||
strMarginPxOutside: 0, |
||||
// 奖品图片相对奖品文字的距离 |
||||
imgMarginPxStr: 0, |
||||
// 奖品图片的宽、高 |
||||
imgPxWidth: 0, |
||||
imgPxHeight: 0, |
||||
// 画板导出的图片 |
||||
lotteryImg: '', |
||||
// 旋转到奖品目标需要的角度 |
||||
targetAngle: 0, |
||||
targetActionAngle: 0, |
||||
// 旋转动画时间 单位 s |
||||
transitionDuration: 0, |
||||
// 是否正在旋转 |
||||
isRotate: false, |
||||
// 当前停留在那个奖品的序号 |
||||
stayIndex: 0, |
||||
// 当前中奖奖品的序号 |
||||
targetIndex: 0, |
||||
// 是否存在可用的缓存转盘图 |
||||
isCacheImg: false, |
||||
oldLotteryImg: '', |
||||
// 转盘绘制时的提示 |
||||
almostLotteryTip: '奖品准备中...', |
||||
// 解决 app 不支持 measureText 的问题 |
||||
// app 已在 2.9.3 的版本中提供了对 measureText 的支持，将在后续版本逐渐稳定后移除相关兼容代码 |
||||
measureText: '' |
||||
} |
||||
}, |
||||
computed: { |
||||
// 高清尺寸 |
||||
higtCanvasSize() { |
||||
return this.canvasPxSize * systemInfo.pixelRatio |
||||
}, |
||||
// 高清字体 |
||||
higtFontSize() { |
||||
return (this.strFontSize / this.pixelRatio) * systemInfo.pixelRatio |
||||
}, |
||||
// 高清行高 |
||||
higtHeightMultiple() { |
||||
return (this.strFontSize / this.pixelRatio) * this.strLineHeight * systemInfo.pixelRatio |
||||
}, |
||||
// 根据奖品列表计算 canvas 旋转角度 |
||||
canvasAngle() { |
||||
let result = 0 |
||||
|
||||
let prizeCount = this.prizeList.length |
||||
let prizeClip = 360 / prizeCount |
||||
let diffNum = 90 / prizeClip |
||||
if (this.pointerPosition === 'edge' || this.rotateType === 'pointer') { |
||||
result = -(prizeClip * diffNum) |
||||
} else { |
||||
result = -(prizeClip * diffNum + prizeClip / 2) |
||||
} |
||||
return result |
||||
}, |
||||
actionAngle() { |
||||
return 0 |
||||
}, |
||||
// 外圆的半径 |
||||
outsideRadius() { |
||||
return this.higtCanvasSize / 2 |
||||
}, |
||||
// 内圆的半径 |
||||
insideRadius() { |
||||
return 20 * systemInfo.pixelRatio |
||||
}, |
||||
// 文字距离边缘的距离 |
||||
textRadius() { |
||||
return this.strMarginPxOutside * systemInfo.pixelRatio || (this.higtFontSize / 2) |
||||
}, |
||||
// 根据画板的宽度计算奖品文字与中心点的距离 |
||||
textDistance() { |
||||
const textZeroY = Math.round(this.outsideRadius - (this.insideRadius / 2)) |
||||
return textZeroY - this.textRadius |
||||
} |
||||
}, |
||||
watch: { |
||||
// 监听获奖序号的变动 |
||||
prizeIndex(newVal, oldVal) { |
||||
if (newVal > -1) { |
||||
this.targetIndex = newVal |
||||
this.onRotateStart() |
||||
} else { |
||||
console.info('旋转结束，prizeIndex 已重置') |
||||
} |
||||
} |
||||
}, |
||||
methods: { |
||||
// 开始旋转 |
||||
onRotateStart() { |
||||
if (this.isRotate) return |
||||
this.isRotate = true |
||||
// 奖品总数 |
||||
let prizeCount = this.prizeList.length |
||||
let baseAngle = 360 / prizeCount |
||||
let angles = 0 |
||||
|
||||
if (this.rotateType === 'pointer') { |
||||
if (this.targetActionAngle === 0) { |
||||
// 第一次旋转 |
||||
angles = (this.targetIndex - this.stayIndex) * baseAngle + baseAngle / 2 - this.actionAngle |
||||
} else { |
||||
// 后续旋转 |
||||
// 后续继续旋转 就只需要计算停留的位置与目标位置的角度 |
||||
angles = (this.targetIndex - this.stayIndex) * baseAngle |
||||
} |
||||
|
||||
// 更新目前序号 |
||||
this.stayIndex = this.targetIndex |
||||
// 转 8 圈，圈数越多，转的越快 |
||||
this.targetActionAngle += angles + 360 * this.ringCount |
||||
console.log('targetActionAngle', this.targetActionAngle) |
||||
} else { |
||||
if (this.targetAngle === 0) { |
||||
// 第一次旋转 |
||||
// 因为第一个奖品是从0°开始的，即水平向右方向 |
||||
// 第一次旋转角度 = 270度 - (停留的序号-目标序号) * 每个奖品区间角度 - 每个奖品区间角度的一半 - canvas自身旋转的度数 |
||||
angles = (270 - (this.targetIndex - this.stayIndex) * baseAngle - baseAngle / 2) - this.canvasAngle |
||||
} else { |
||||
// 后续旋转 |
||||
// 后续继续旋转 就只需要计算停留的位置与目标位置的角度 |
||||
angles = -(this.targetIndex - this.stayIndex) * baseAngle |
||||
} |
||||
|
||||
// 更新目前序号 |
||||
this.stayIndex = this.targetIndex |
||||
// 转 8 圈，圈数越多，转的越快 |
||||
this.targetAngle += angles + 360 * this.ringCount |
||||
} |
||||
|
||||
// 计算转盘结束的时间，预加一些延迟确保转盘停止后触发结束事件 |
||||
let endTime = this.transitionDuration * 1000 + 100 |
||||
let endTimer = setTimeout(() => { |
||||
clearTimeout(endTimer) |
||||
endTimer = null |
||||
|
||||
this.isRotate = false |
||||
this.$emit('draw-end') |
||||
}, endTime) |
||||
|
||||
let resetPrizeTimer = setTimeout(() => { |
||||
clearTimeout(resetPrizeTimer) |
||||
resetPrizeTimer = null |
||||
|
||||
// 每次抽奖结束后都要重置父级组件的 prizeIndex |
||||
this.$emit('reset-index') |
||||
}, endTime + 50) |
||||
}, |
||||
// 点击 开始抽奖 按钮 |
||||
handleActionStart() { |
||||
if (!this.lotteryImg) return |
||||
if (this.isRotate) return |
||||
this.$emit('draw-start') |
||||
}, |
||||
// 渲染转盘 |
||||
async onCreateCanvas() { |
||||
// 获取 canvas 画布 |
||||
const canvasId = this.canvasId |
||||
const ctx = uni.createCanvasContext(canvasId, this) |
||||
|
||||
// canvas 的宽高 |
||||
let canvasW = this.higtCanvasSize |
||||
let canvasH = this.higtCanvasSize |
||||
|
||||
// 根据奖品个数计算 角度 |
||||
let prizeCount = this.prizeList.length |
||||
let baseAngle = Math.PI * 2 / prizeCount |
||||
|
||||
// 设置字体 |
||||
ctx.setFontSize(this.higtFontSize) |
||||
|
||||
// 注意，开始画的位置是从0°角的位置开始画的。也就是水平向右的方向。 |
||||
// 画具体内容 |
||||
for (let i = 0; i < prizeCount; i++) { |
||||
let prizeItem = this.prizeList[i] |
||||
// 当前角度 |
||||
let angle = i * baseAngle |
||||
|
||||
// 保存当前画布的状态 |
||||
ctx.save() |
||||
|
||||
// x => 圆弧对应的圆心横坐标 x |
||||
// y => 圆弧对应的圆心横坐标 y |
||||
// radius => 圆弧的半径大小 |
||||
// startAngle => 圆弧开始的角度，单位是弧度 |
||||
// endAngle => 圆弧结束的角度，单位是弧度 |
||||
// anticlockwise(可选) => 绘制方向，true 为逆时针，false 为顺时针 |
||||
|
||||
ctx.beginPath() |
||||
// 外圆 |
||||
ctx.arc(canvasW * 0.5, canvasH * 0.5, this.outsideRadius, angle, angle + baseAngle, false) |
||||
// 内圆 |
||||
ctx.arc(canvasW * 0.5, canvasH * 0.5, this.insideRadius, angle + baseAngle, angle, true) |
||||
|
||||
// 每个奖品区块背景填充颜色 |
||||
if (this.colors.length === 2) { |
||||
ctx.setFillStyle(this.colors[i % 2]) |
||||
} else { |
||||
ctx.setFillStyle(this.colors[i]) |
||||
} |
||||
// 填充颜色 |
||||
ctx.fill() |
||||
|
||||
// 设置文字颜色 |
||||
if (this.strFontColors.length === 1) { |
||||
ctx.setFillStyle(this.strFontColors[0]) |
||||
} else if (this.strFontColors.length === 2) { |
||||
ctx.setFillStyle(this.strFontColors[i % 2]) |
||||
} else { |
||||
ctx.setFillStyle(this.strFontColors[i]) |
||||
} |
||||
|
||||
// 开启描边 |
||||
if (this.stroked) { |
||||
// 设置描边颜色 |
||||
ctx.setStrokeStyle(`${this.strokeColor}`) |
||||
// 描边 |
||||
ctx.stroke() |
||||
} |
||||
|
||||
// 开始绘制奖品内容 |
||||
// 重新映射画布上的 (0,0) 位置 |
||||
let translateX = canvasW * 0.5 + Math.cos(angle + baseAngle / 2) * this.textDistance |
||||
let translateY = canvasH * 0.5 + Math.sin(angle + baseAngle / 2) * this.textDistance |
||||
ctx.translate(translateX, translateY) |
||||
|
||||
// 绘制奖品名称 |
||||
let rewardName = this.strLimit(prizeItem.prizeName) |
||||
|
||||
// rotate方法旋转当前的绘图，因为文字是和当前扇形中心线垂直的 |
||||
ctx.rotate(angle + (baseAngle / 2) + (Math.PI / 2)) |
||||
|
||||
// 设置文本位置并处理换行 |
||||
if (this.strDirection === 'horizontal') { |
||||
// 是否需要换行 |
||||
if (rewardName && this.prizeNameDrawed) { |
||||
let realLen = clacTextLen(rewardName).realLen |
||||
let isLineBreak = realLen > this.strLineLen |
||||
if (isLineBreak) { |
||||
// 获得多行文本数组 |
||||
let firstText = '' |
||||
let lastText = '' |
||||
let firstCount = 0 |
||||
for (let j = 0; j < rewardName.length; j++) { |
||||
firstCount += clacTextLen(rewardName[j]).byteLen |
||||
if (firstCount <= (this.strLineLen * 2)) { |
||||
firstText += rewardName[j] |
||||
} else { |
||||
lastText += rewardName[j] |
||||
} |
||||
} |
||||
rewardName = firstText + ',' + lastText |
||||
let rewardNames = rewardName.split(',') |
||||
// 循环文本数组，计算每一行的文本宽度 |
||||
for (let j = 0; j < rewardNames.length; j++) { |
||||
if (ctx.measureText && ctx.measureText(rewardNames[j]).width > 0) { |
||||
// 文本的宽度信息 |
||||
let tempStrSize = ctx.measureText(rewardNames[j]) |
||||
let tempStrWidth = -(tempStrSize.width / 2).toFixed(2) |
||||
ctx.fillText(rewardNames[j], tempStrWidth, j * this.higtHeightMultiple) |
||||
} else { |
||||
this.measureText = rewardNames[j] |
||||
|
||||
// 等待页面重新渲染 |
||||
await this.$nextTick() |
||||
|
||||
let textWidth = await this.getTextWidth() |
||||
let tempStrWidth = -(textWidth / 2).toFixed(2) |
||||
ctx.fillText(rewardNames[j], tempStrWidth, j * this.higtHeightMultiple) |
||||
// console.log(rewardNames[j], textWidth, j) |
||||
} |
||||
} |
||||
} else { |
||||
if (ctx.measureText && ctx.measureText(rewardName).width > 0) { |
||||
// 文本的宽度信息 |
||||
let tempStrSize = ctx.measureText(rewardName) |
||||
let tempStrWidth = -(tempStrSize.width / 2).toFixed(2) |
||||
ctx.fillText(rewardName, tempStrWidth, 0) |
||||
} else { |
||||
this.measureText = rewardName |
||||
|
||||
// 等待页面重新渲染 |
||||
await this.$nextTick() |
||||
|
||||
let textWidth = await this.getTextWidth() |
||||
let tempStrWidth = -(textWidth / 2).toFixed(2) |
||||
ctx.fillText(rewardName, tempStrWidth, 0) |
||||
} |
||||
} |
||||
} |
||||
} else { |
||||
let rewardNames = rewardName.split('') |
||||
for (let j = 0; j < rewardNames.length; j++) { |
||||
if (ctx.measureText && ctx.measureText(rewardNames[j]).width > 0) { |
||||
// 文本的宽度信息 |
||||
let tempStrSize = ctx.measureText(rewardNames[j]) |
||||
let tempStrWidth = -(tempStrSize.width / 2).toFixed(2) |
||||
ctx.fillText(rewardNames[j], tempStrWidth, j * this.higtHeightMultiple) |
||||
} else { |
||||
this.measureText = rewardNames[j] |
||||
|
||||
// 等待页面重新渲染 |
||||
await this.$nextTick() |
||||
|
||||
let textWidth = await this.getTextWidth() |
||||
let tempStrWidth = -(textWidth / 2).toFixed(2) |
||||
ctx.fillText(rewardNames[j], tempStrWidth, j * this.higtHeightMultiple) |
||||
// console.log(rewardNames[j], textWidth, i) |
||||
} |
||||
} |
||||
} |
||||
|
||||
|
||||
// 绘制奖品图片，文字竖向展示时，不支持图片展示 |
||||
if (this.imgDrawed && prizeItem.prizeImage && this.strDirection !== 'vertical') { |
||||
// App-Android平台 系统 webview 更新到 Chrome84+ 后 canvas 组件绘制本地图像 uni.canvasToTempFilePath 会报错 |
||||
// 统一将图片处理成 base64 |
||||
// https://ask.dcloud.net.cn/question/103303 |
||||
let reg = /^(https|http)/g |
||||
// 处理远程图片 |
||||
if (reg.test(prizeItem.prizeImage)) { |
||||
let platformTips = '' |
||||
// #ifdef APP-PLUS |
||||
platformTips = '' |
||||
// #endif |
||||
// #ifdef MP |
||||
platformTips = '需要处理好下载域名的白名单问题，' |
||||
// #endif |
||||
// #ifdef H5 |
||||
platformTips = '需要处理好跨域问题，' |
||||
// #endif |
||||
console.warn(`###当前数据列表中的奖品图片为网络图片，${platformTips}开始尝试下载图片...###`) |
||||
let res = await downloadFile(prizeItem.prizeImage) |
||||
console.log('处理远程图片', res) |
||||
if (res.ok) { |
||||
let tempFilePath = res.tempFilePath |
||||
// #ifndef MP |
||||
prizeItem.prizeImage = await pathToBase64(tempFilePath) |
||||
// #endif |
||||
// #ifdef MP |
||||
prizeItem.prizeImage = tempFilePath |
||||
// #endif |
||||
} else { |
||||
this.handlePrizeImgSuc({ |
||||
ok: false, |
||||
data: res.data, |
||||
msg: res.msg |
||||
}) |
||||
} |
||||
} else { |
||||
console.log('处理非远程图片', prizeItem.prizeImage) |
||||
// #ifndef MP |
||||
if (prizeItem.prizeImage.indexOf(';base64,') === -1) { |
||||
prizeItem.prizeImage = await pathToBase64(prizeItem.prizeImage) |
||||
} |
||||
// #endif |
||||
} |
||||
|
||||
let prizeImageX = -(this.imgPxWidth * systemInfo.pixelRatio / 2) |
||||
let prizeImageY = this.imgMarginPxStr * systemInfo.pixelRatio |
||||
let prizeImageW = this.imgPxWidth * systemInfo.pixelRatio |
||||
let prizeImageH = this.imgPxHeight * systemInfo.pixelRatio |
||||
ctx.drawImage(prizeItem.prizeImage, prizeImageX, prizeImageY, prizeImageW, prizeImageH) |
||||
} |
||||
|
||||
ctx.restore() |
||||
} |
||||
|
||||
// 保存绘图并导出图片 |
||||
ctx.draw(true, () => { |
||||
let drawTimer = setTimeout(() => { |
||||
clearTimeout(drawTimer) |
||||
drawTimer = null |
||||
|
||||
// #ifdef MP-ALIPAY |
||||
ctx.toTempFilePath({ |
||||
destWidth: this.higtCanvasSize, |
||||
destHeight: this.higtCanvasSize, |
||||
success: (res) => { |
||||
// console.log(res.apFilePath) |
||||
this.handlePrizeImg({ |
||||
ok: true, |
||||
data: res.apFilePath, |
||||
msg: '画布导出生成图片成功' |
||||
}) |
||||
}, |
||||
fail: (err) => { |
||||
this.handlePrizeImg({ |
||||
ok: false, |
||||
data: err, |
||||
msg: '画布导出生成图片失败' |
||||
}) |
||||
} |
||||
}) |
||||
// #endif |
||||
|
||||
// #ifndef MP-ALIPAY |
||||
uni.canvasToTempFilePath({ |
||||
canvasId: this.canvasId, |
||||
success: (res) => { |
||||
// 在 H5 平台下，tempFilePath 为 base64 |
||||
// console.log(res.tempFilePath) |
||||
this.handlePrizeImg({ |
||||
ok: true, |
||||
data: res.tempFilePath, |
||||
msg: '画布导出生成图片成功' |
||||
}) |
||||
}, |
||||
fail: (err) => { |
||||
this.handlePrizeImg({ |
||||
ok: false, |
||||
data: err, |
||||
msg: '画布导出生成图片失败' |
||||
}) |
||||
} |
||||
}, this) |
||||
// #endif |
||||
}, 500) |
||||
}) |
||||
}, |
||||
// 处理导出的图片 |
||||
handlePrizeImg(res) { |
||||
if (res.ok) { |
||||
let data = res.data |
||||
|
||||
if (!this.canvasCached) { |
||||
this.lotteryImg = data |
||||
this.handlePrizeImgSuc(res) |
||||
return |
||||
} |
||||
|
||||
// #ifndef H5 |
||||
if (this.isCacheImg) { |
||||
uni.getSavedFileList({ |
||||
success: (sucRes) => { |
||||
let fileList = sucRes.fileList |
||||
// console.log('getSavedFileList Cached', fileList) |
||||
|
||||
let cached = false |
||||
|
||||
if (fileList.length) { |
||||
for (let i = 0; i < fileList.length; i++) { |
||||
let item = fileList[i] |
||||
if (item.filePath === data) { |
||||
cached = true |
||||
this.lotteryImg = data |
||||
|
||||
console.info('经查，本地缓存中存在的转盘图可用，本次将不再绘制转盘') |
||||
this.handlePrizeImgSuc(res) |
||||
break |
||||
} |
||||
} |
||||
} |
||||
|
||||
if (!cached) { |
||||
console.info('经查，本地缓存中存在的转盘图不可用，需要重新初始化转盘绘制') |
||||
this.initCanvasDraw() |
||||
} |
||||
}, |
||||
fail: (err) => { |
||||
this.initCanvasDraw() |
||||
} |
||||
}) |
||||
} else { |
||||
uni.saveFile({ |
||||
tempFilePath: data, |
||||
success: (sucRes) => { |
||||
let filePath = sucRes.savedFilePath |
||||
// console.log('saveFile', filePath) |
||||
setStore(`${this.canvasId}LotteryImg`, filePath) |
||||
this.lotteryImg = filePath |
||||
this.handlePrizeImgSuc({ |
||||
ok: true, |
||||
data: filePath, |
||||
msg: '画布导出生成图片成功' |
||||
}) |
||||
}, |
||||
fail: (err) => { |
||||
this.handlePrizeImg({ |
||||
ok: false, |
||||
data: err, |
||||
msg: '画布导出生成图片失败' |
||||
}) |
||||
} |
||||
}) |
||||
} |
||||
// #endif |
||||
// #ifdef H5 |
||||
setStore(`${this.canvasId}LotteryImg`, data) |
||||
this.lotteryImg = data |
||||
this.handlePrizeImgSuc(res) |
||||
|
||||
// console info |
||||
let consoleText = this.isCacheImg ? '缓存' : '导出' |
||||
console.info(`当前为 H5 端，使用${consoleText}中的 base64 图`) |
||||
// #endif |
||||
} else { |
||||
console.error('处理导出的图片失败', res) |
||||
uni.hideLoading() |
||||
// #ifdef H5 |
||||
console.error('###当前为 H5 端，下载网络图片需要后端配置允许跨域###') |
||||
// #endif |
||||
// #ifdef MP |
||||
console.error('###当前为小程序端，下载网络图片需要配置域名白名单###') |
||||
// #endif |
||||
} |
||||
}, |
||||
// 处理图片完成 |
||||
handlePrizeImgSuc (res) { |
||||
uni.hideLoading() |
||||
this.$emit('finish', { |
||||
ok: res.ok, |
||||
data: res.data, |
||||
msg: res.ok ? this.successMsg : this.failMsg |
||||
}) |
||||
this.almostLotteryTip = res.ok ? this.successMsg : this.failMsg |
||||
}, |
||||
// 兼容 app 端不支持 ctx.measureText |
||||
// 已知问题：初始绘制时，低端安卓机 平均耗时 2s |
||||
// hbx 2.8.12+ 已在 app 端支持 |
||||
getTextWidth() { |
||||
console.warn('正在采用兼容方式获取文本的 size 信息，虽然没有任何问题，如果可以，请将此 systemInfo 及 hbx 版本号 反馈给作者', systemInfo) |
||||
let query = uni.createSelectorQuery().in(this) |
||||
let nodesRef = query.select('.almost-lottery__measureText') |
||||
return new Promise((resolve, reject) => { |
||||
nodesRef.fields({ |
||||
size: true, |
||||
}, (res) => { |
||||
resolve(res.width) |
||||
}).exec() |
||||
}) |
||||
}, |
||||
// 处理文字溢出 |
||||
strLimit(value) { |
||||
let maxLength = this.strMaxLen |
||||
if (!value || !maxLength) return value |
||||
return clacTextLen(value).realLen > maxLength ? value.slice(0, maxLength - 1) + '..' : value |
||||
}, |
||||
// 检查本地缓存中是否存在转盘图 |
||||
checkCacheImg () { |
||||
console.log('检查本地缓存中是否存在转盘图') |
||||
// 检查是否已有缓存的转盘图 |
||||
// 检查是否与本次奖品数据相同 |
||||
this.oldLotteryImg = getStore(`${this.canvasId}LotteryImg`) |
||||
let oldPrizeList = getStore(`${this.canvasId}PrizeList`) |
||||
let newPrizeList = JSON.stringify(this.prizeList) |
||||
if (this.oldLotteryImg) { |
||||
if (oldPrizeList === newPrizeList) { |
||||
console.log(`经查，本地缓存中存在转盘图 => ${this.oldLotteryImg}`) |
||||
this.isCacheImg = true |
||||
|
||||
console.log('需要继续判断这张缓存图是否可用') |
||||
this.handlePrizeImg({ |
||||
ok: true, |
||||
data: this.oldLotteryImg, |
||||
msg: '画布导出生成图片成功' |
||||
}) |
||||
return |
||||
} |
||||
} |
||||
|
||||
console.log('经查，本地缓存中不存在转盘图') |
||||
this.initCanvasDraw() |
||||
}, |
||||
// 初始化绘制 |
||||
initCanvasDraw () { |
||||
console.log('开始初始化转盘绘制') |
||||
this.isCacheImg = false |
||||
this.lotteryImg = '' |
||||
clearStore(`${this.canvasId}LotteryImg`) |
||||
setStore(`${this.canvasId}PrizeList`, this.prizeList) |
||||
this.onCreateCanvas() |
||||
}, |
||||
// 预处理初始化 |
||||
async beforeInit () { |
||||
// 处理 rpx 自适应尺寸 |
||||
let lotterySize = await new Promise((resolve) => { |
||||
uni.createSelectorQuery().in(this).select('.almost-lottery__wrap').boundingClientRect((rects) => { |
||||
resolve(rects) |
||||
// console.log('处理 lottery rpx 的自适应', rects) |
||||
}).exec() |
||||
}) |
||||
let actionSize = await new Promise((resolve) => { |
||||
uni.createSelectorQuery().in(this).select('.lottery-action').boundingClientRect((rects) => { |
||||
resolve(rects) |
||||
// console.log('处理 action rpx 的自适应', rects) |
||||
}).exec() |
||||
}) |
||||
let strMarginSize = await new Promise((resolve) => { |
||||
uni.createSelectorQuery().in(this).select('.str-margin-outside').boundingClientRect((rects) => { |
||||
resolve(rects) |
||||
// console.log('处理 str-margin-outside rpx 的自适应', rects) |
||||
}).exec() |
||||
}) |
||||
let imgMarginStr = await new Promise((resolve) => { |
||||
uni.createSelectorQuery().in(this).select('.img-margin-str').boundingClientRect((rects) => { |
||||
resolve(rects) |
||||
// console.log('处理 img-margin-str rpx 的自适应', rects) |
||||
}).exec() |
||||
}) |
||||
let imgSize = await new Promise((resolve) => { |
||||
uni.createSelectorQuery().in(this).select('.img-size').boundingClientRect((rects) => { |
||||
resolve(rects) |
||||
// console.log('处理 img-size rpx 的自适应', rects) |
||||
}).exec() |
||||
}) |
||||
this.lotteryPxSize = Math.floor(lotterySize.width) |
||||
this.actionPxSize = Math.floor(actionSize.width) |
||||
this.canvasPxSize = this.lotteryPxSize - Math.floor(actionSize.left) + Math.floor(lotterySize.left) |
||||
this.strMarginPxOutside = Math.floor(strMarginSize.left) - Math.floor(lotterySize.left) |
||||
this.imgMarginPxStr = Math.floor(imgMarginStr.left) - Math.floor(lotterySize.left) |
||||
this.imgPxWidth = Math.floor(imgSize.width) |
||||
this.imgPxHeight = Math.floor(imgSize.height) |
||||
|
||||
let stoTimer = setTimeout(() => { |
||||
clearTimeout(stoTimer) |
||||
stoTimer = null |
||||
|
||||
// 判断画板是否设置缓存 |
||||
if (this.canvasCached) { |
||||
this.checkCacheImg() |
||||
} else { |
||||
this.initCanvasDraw() |
||||
} |
||||
this.transitionDuration = this.duration |
||||
}, 50) |
||||
} |
||||
}, |
||||
mounted() { |
||||
this.$nextTick(() => { |
||||
let stoTimer = setTimeout(() => { |
||||
clearTimeout(stoTimer) |
||||
stoTimer = null |
||||
|
||||
this.beforeInit() |
||||
}, 50) |
||||
}) |
||||
} |
||||
} |
||||
</script> |
||||
|
||||
<style lang="scss" scoped> |
||||
.almost-lottery { |
||||
display: flex; |
||||
flex-direction: column; |
||||
justify-content: center; |
||||
align-items: center; |
||||
} |
||||
|
||||
.almost-lottery__wrap { |
||||
position: relative; |
||||
// background-color: red; |
||||
} |
||||
.lottery-action, |
||||
.str-margin-outside, |
||||
.img-margin-str, |
||||
.img-size { |
||||
position: absolute; |
||||
left: 0; |
||||
top: 0; |
||||
z-index: -1; |
||||
// background-color: blue; |
||||
} |
||||
|
||||
.almost-lottery__wrap { |
||||
display: flex; |
||||
justify-content: center; |
||||
align-items: center; |
||||
} |
||||
|
||||
.almost-lottery__action, |
||||
.almost-lottery__bg, |
||||
.almost-lottery__canvas { |
||||
position: absolute; |
||||
} |
||||
|
||||
.almost-lottery__canvas { |
||||
left: -9999px; |
||||
opacity: 0; |
||||
display: flex; |
||||
justify-content: center; |
||||
align-items: center; |
||||
} |
||||
|
||||
.almost-lottery__canvas-img, |
||||
.almost-lottery__action-bg { |
||||
display: block; |
||||
transition: transform cubic-bezier(.34, .12, .05, .95); |
||||
} |
||||
|
||||
.almost-lottery__tip { |
||||
color: #FFFFFF; |
||||
font-size: 24rpx; |
||||
text-align: center; |
||||
} |
||||
|
||||
.almost-lottery__measureText { |
||||
position: absolute; |
||||
left: 0; |
||||
top: 0; |
||||
white-space: nowrap; |
||||
font-size: 12px; |
||||
opacity: 0; |
||||
} |
||||
</style> |
||||
@ -0,0 +1,78 @@ |
||||
{ |
||||
"id": "almost-lottery", |
||||
"displayName": "Almost-Lottery抽奖转盘", |
||||
"version": "1.8.5", |
||||
"description": "【荣获2021插件大赛三等奖】提供奇数、缓存等众多配置项，更有抽奖概率、抽奖次数、付费抽奖等功能内置于示例项目中，完美支持APP、各平台小程序、H5、PC，同时提供 uniCloud 云端版本", |
||||
"keywords": [ |
||||
"转盘", |
||||
"抽奖", |
||||
"大转盘抽奖" |
||||
], |
||||
"repository": "https://github.com/ialmost/almost-components_uniapp", |
||||
"engines": { |
||||
"HBuilderX": "^3.1.22" |
||||
}, |
||||
"dcloudext": { |
||||
"category": [ |
||||
"前端组件", |
||||
"通用组件" |
||||
], |
||||
"sale": { |
||||
"regular": { |
||||
"price": "0.00" |
||||
}, |
||||
"sourcecode": { |
||||
"price": "0.00" |
||||
} |
||||
}, |
||||
"contact": { |
||||
"qq": "" |
||||
}, |
||||
"declaration": { |
||||
"ads": "无", |
||||
"data": "无", |
||||
"permissions": "无" |
||||
}, |
||||
"npmurl": "" |
||||
}, |
||||
"uni_modules": { |
||||
"dependencies": [], |
||||
"encrypt": [], |
||||
"platforms": { |
||||
"cloud": { |
||||
"tcb": "y", |
||||
"aliyun": "y" |
||||
}, |
||||
"client": { |
||||
"App": { |
||||
"app-vue": "y", |
||||
"app-nvue": "n" |
||||
}, |
||||
"H5-mobile": { |
||||
"Safari": "y", |
||||
"Android Browser": "y", |
||||
"微信浏览器(Android)": "y", |
||||
"QQ浏览器(Android)": "y" |
||||
}, |
||||
"H5-pc": { |
||||
"Chrome": "y", |
||||
"IE": "y", |
||||
"Edge": "y", |
||||
"Firefox": "y", |
||||
"Safari": "y" |
||||
}, |
||||
"小程序": { |
||||
"微信": "y", |
||||
"阿里": "y", |
||||
"百度": "y", |
||||
"字节跳动": "y", |
||||
"QQ": "y" |
||||
}, |
||||
"快应用": { |
||||
"华为": "u", |
||||
"联盟": "u" |
||||
} |
||||
} |
||||
} |
||||
} |
||||
} |
||||
@ -0,0 +1,159 @@ |
||||
# almost-lottery |
||||
*使用 Canvas 绘制的抽奖转盘，提供奇数、缓存等众多配置项，更有抽奖概率、抽奖次数、付费抽奖等功能内置于示例项目中* |
||||
|
||||
|
||||
> <br /> |
||||
> |
||||
> 如果用着还行，请支持一下 |
||||
> - 前往 [GitHub](https://github.com/ialmost/almost-components_uniapp) 给个 Star |
||||
> - 前往 [UniApp](https://ext.dcloud.net.cn/plugin?id=1030) 给个五星 |
||||
> - 使用中遇到问题时，可以添加 **QQ群 20441313** |
||||
> |
||||
> <br /> |
||||
|
||||
|
||||
## 基于 uniCloud 开发的云端 Almost-Lottery 抽奖转盘，欢迎尝试体验 |
||||
- [Almost-Lottery抽奖转盘的云端一体页面](https://ext.dcloud.net.cn/plugin?id=5763) |
||||
- [Almost-Lottery抽奖转盘的配置中心](https://ext.dcloud.net.cn/plugin?id=5762) |
||||
|
||||
|
||||
## 高能预警 |
||||
- 本插件仅支持 `uni_modules` 模式，强烈推荐使用该模式，**非 `uni_modules` 模式不再维护** |
||||
- 在使用本插件之前，强烈建议使用 `HBuilderX` 导入示例项目验证可用性并参照修改 |
||||
|
||||
## 功能概要 |
||||
- [x] 可配置奖品文字 **支持横向/竖向展示** |
||||
- [x] 可配置每个奖品区块的背景颜色 |
||||
- [x] 可配置每个奖品区块的奖品文字颜色 |
||||
- [x] 可配置奖品区块是否开启描边以及边框的颜色，默认不开启 |
||||
- [x] 可配置转盘外环和抽奖按钮图 |
||||
- [x] 可配置每个奖品区块的奖品图片，**当图片是网络地址时，小程序端需要配置白名单，H5端需要允许跨域，奖品文字为竖向时不支持展示奖品图片** |
||||
- [x] 奖品列表支持奇数，**奇数时需尽量能被 `360` 除尽** |
||||
- [x] 可配置内圈与外圈的间距 |
||||
- [x] 可配置轮盘旋转或指针旋转 |
||||
- [x] 可配置画板是否缓存，默认不开启 |
||||
- [x] 更多配置请查看API说明 |
||||
|
||||
## 示例项目附加功能 |
||||
- [x] 中奖概率，**强烈推荐中奖概率应由后端控制** |
||||
- [x] 抽奖次数 |
||||
- [x] 付费抽奖 |
||||
|
||||
|
||||
## 注意事项 |
||||
|
||||
- 编译到小程序端时，请务必勾选ES6转ES5 |
||||
|
||||
- `@reset-index="prizeIndex = -1"` 必须默认写入到 `template` 中，不可删除 |
||||
|
||||
- 每个奖品区块的奖品图片尺寸不宜过大，图片越大，绘制的过程越慢，尽量将图片尺寸控制在 `100*100` 以内，且图片大小控制在 `40KB` 以内 |
||||
|
||||
- 关于中奖概率的配置，请下载示例项目，参照 `pages/index/index.vue` 中的代码进行配置 |
||||
|
||||
- 组件本身不涉及任何业务逻辑，与业务相关的代码建议都放在 `pages/index/index.vue` 中 |
||||
|
||||
|
||||
## 代码演示 |
||||
#### 基础用法 |
||||
``` |
||||
// template |
||||
// @reset-index="prizeIndex = -1" 必须默认写入到 template 中，不可删除 |
||||
<almost-lottery |
||||
:prizeList="prizeList" |
||||
:prizeIndex="prizeIndex" |
||||
@reset-index="prizeIndex = -1" |
||||
@draw-start="handleDrawStart" |
||||
@draw-end="handleDrawEnd" |
||||
@finish="handleDrawFinish" |
||||
v-if="prizeList.length" |
||||
/> |
||||
|
||||
// script |
||||
import AlmostLottery from '@/uni_modules/almost-lottery/components/almost-lottery/almost-lottery.vue' |
||||
export default { |
||||
components: { |
||||
AlmostLottery |
||||
}, |
||||
data () { |
||||
return { |
||||
// 以下是奖品配置数据 |
||||
// 奖品数据 |
||||
prizeList: [], |
||||
// 中奖下标 |
||||
prizeIndex: -1 |
||||
} |
||||
}, |
||||
methods: { |
||||
// 本次抽奖开始 |
||||
handleDrawStart () { |
||||
// 这里需要处理你的中奖逻辑，并得出 prizeIndex |
||||
// 请查看示例项目中的代码 |
||||
}, |
||||
// 本次抽奖结束 |
||||
handleDrawEnd () { |
||||
// 完成抽奖后，这里处理你拿到结果后的逻辑 |
||||
// 请查看示例项目中的代码 |
||||
}, |
||||
// 抽奖转盘绘制完成 |
||||
handleDrawFinish (res) { |
||||
// 抽奖转盘准备就绪后，这里处理你的逻辑 |
||||
// 请查看示例项目中的代码 |
||||
// console.log('抽奖转盘绘制完成', res) |
||||
} |
||||
} |
||||
} |
||||
``` |
||||
|
||||
## API |
||||
#### Props |
||||
参数 | 说明 | 类型 | 默认值 |
||||
:---|:---|:---|:--- |
||||
pixelRatio | 移动端设计稿的像素比基准值，**涉及到 `rpx` 的适配问题** | *`Number`* | `2` |
||||
canvasId | Canvas的标识，**多画板情况下需要配置不同的标识** | *`String`* | `'almostLottery'` |
||||
lotterySize | 抽奖转盘的整体尺寸，单位 `rpx` | *`Number`* | `600` |
||||
actionSize | 抽奖按钮的尺寸，单位 `rpx` | *`Number`* | `200` |
||||
canvasMarginOutside | Canvas边缘距离转盘边缘的距离，单位`rpx` | *`Number`* | `90` |
||||
prizeIndex | 获奖奖品在奖品列表中的序号，**每次抽奖结束后会自动重置为 `-1`** | *`Number`* | `-1` |
||||
prizeList | 奖品列表，支持奇数（尽量能被 `360` 除尽），**为奇数时需要重设 `colors` 参数** | *`Array`* | - |
||||
lotteryBg | 转盘外环图片 | `String` | `默认内置的本地图片` |
||||
actionBg | 抽奖按钮图片 | `String` | `默认内置的本地图片` |
||||
colors | 奖品区块对应的背景颜色，默认 2 个颜色相互交替，**也可以对每个区块设置不同颜色** | *`Array`* | `['#FFFFFF', '#FFBF05']` |
||||
prizeNameDrawed | 是否绘制奖品名称 | *`Boolean`* | `true` |
||||
stroked | 是否开启奖品区块描边 | *`Boolean`* | `false` |
||||
strDirection | 奖品名称展示方向，可选值 `'horizontal'` => 横向 `'vertical'` => 竖向 | *`String`* | `'horizontal'` |
||||
strokeColor | 奖品区块边框颜色 | *`String`* | `'#FFBF05'` |
||||
rotateType | 旋转的类型，可选值 `'roulette'` => 轮盘旋转 `'pointer'` => 指针旋转 | *`String`* | `'roulette'` |
||||
duration | 转盘旋转的动画时长，单位：秒 | *`Number`* | `8` |
||||
ringCount | 旋转的圈数 | *`Number`* | `8` |
||||
pointerPosition | 点击抽奖按钮指针的位置，可选值 `'edge'` => 指向边界 `'middle'` => 指向中间 | *`String`* | `'edge'` |
||||
strFontColors | 奖品文字颜色，默认 2 个颜色相互交替，**也可以对每个区块的文字设置不同颜色，或仅设置一个颜色** | *`Array`* | `['#FFBF05', '#FFFFFF']` |
||||
strFontSize | 奖品名称的字号，单位 `rpx` | *`Number`* | `24` |
||||
strLineHeight | 奖品名称多行情况下的行高 | *`Number`* | `1.2` |
||||
strMaxLen | 奖品名称长度限制，**文字竖向时不生效** | *`Number`* | `12` |
||||
strLineLen | 奖品名称在多行情况下第一行文字的长度，**文字竖向时不生效** | *`Number`* | `6` |
||||
strMarginOutside | 奖品文字相对轮盘边缘的距离，单位 `rpx` | *`Number`* | `strFontSize 的一半` |
||||
imgMarginStr | 奖品图片相对奖品文字的距离，单位 `rpx` | *`Number`* | `60` |
||||
imgWidth | 奖品图片的宽度，单位 `rpx` | *`Number`* | `50` |
||||
imgHeight | 奖品图片的高度，单位 `rpx` | *`Number`* | `50` |
||||
imgDrawed | 是否绘制奖品图片，默认绘制 | *`Boolean`* | `true` |
||||
successMsg | 转盘绘制成功的提示 | *`String`* | `'奖品准备就绪，快来参与抽奖吧'` |
||||
failMsg | 转盘绘制失败的提示 | *`String`* | `'奖品仍在准备中，请稍后再来...'` |
||||
canvasCached | 是否开启缓存，避免在数据不变的情况下重复绘制，建议在生产环境中开启 | *`Boolean`* | `false` |
||||
|
||||
#### Events |
||||
事件名 | 说明 | 回调参数 |
||||
:---|:---|:--- |
||||
@reset-index | 每次抽奖结束后重置获奖的序号为 `-1`，**该事件必须默认写入到 `template` 中，不可删除** | - |
||||
@draw-start | 转盘旋转开始时触发 | - |
||||
@draw-end | 转盘旋转结束时触发 | - |
||||
@finish | Canvas转盘绘制完成时触发 | `{ ok: 绘制是否成功, data: 转盘的图片, msg: 绘制结果的提示 }` |
||||
|
||||
#### prizeList 数据结构 |
||||
*请按如下数据字段对你对奖品列表数据结构进行调整* |
||||
键名 | 说明 | 类型 |
||||
:---|:---|:--- |
||||
prizeId | 奖品对应 `ID` | *`Number`* |
||||
prizeName | 奖品名称 | *`String`* |
||||
prizeStock | 奖品库存 | *`Number`* |
||||
prizeWeight | 奖品权重 | *`Number`* |
||||
prizeImage | 奖品图片地址，网络图片仅支持`http`和`https`协议 | *`String`* |
||||
|
After Width: | Height: | Size: 12 KiB |
|
After Width: | Height: | Size: 30 KiB |
|
After Width: | Height: | Size: 69 KiB |
|
After Width: | Height: | Size: 3.5 KiB |
|
After Width: | Height: | Size: 7.5 KiB |
|
After Width: | Height: | Size: 13 KiB |
@ -0,0 +1,303 @@ |
||||
/** |
||||
* 存储 localStorage 数据 |
||||
* @param {String} name - 缓存数据的标识 |
||||
* @param {any} content - 缓存的数据内容 |
||||
*/ |
||||
export const setStore = (name, content) => { |
||||
if (!name) return |
||||
if (typeof content !== 'string') { |
||||
content = JSON.stringify(content) |
||||
} |
||||
uni.setStorageSync(name, content) |
||||
} |
||||
|
||||
/** |
||||
* 获取 localStorage 数据 |
||||
* @param {String} name - 缓存数据的标识 |
||||
*/ |
||||
export const getStore = (name) => { |
||||
if (!name) return |
||||
return uni.getStorageSync(name) |
||||
} |
||||
|
||||
/** |
||||
* 清除 localStorage 数据 |
||||
* @param {String} name - 缓存数据的标识 |
||||
*/ |
||||
export const clearStore = (name) => { |
||||
if (name) { |
||||
uni.removeStorageSync(name) |
||||
} else { |
||||
console.log('清理本地全部缓存') |
||||
uni.clearStorageSync() |
||||
} |
||||
} |
||||
|
||||
/** |
||||
* 计算文本的长度 |
||||
* @param {String} text - 文本内容 |
||||
*/ |
||||
export const clacTextLen = (text) => { |
||||
if (!text) return { byteLen: 0, realLen: 0 } |
||||
text += '' |
||||
let clacLen = 0 |
||||
for (let i = 0; i < text.length; i++) { |
||||
if ((text.charCodeAt(i) < 0) || (text.charCodeAt(i) > 255)) { |
||||
clacLen += 2 |
||||
} else { |
||||
clacLen += 1 |
||||
} |
||||
} |
||||
// console.log(`当前文本 ${text} 的长度为 ${clacLen / 2}`)
|
||||
return { |
||||
byteLen: clacLen, |
||||
realLen: clacLen / 2 |
||||
} |
||||
} |
||||
|
||||
/** |
||||
* 下载文件，并返回临时路径 |
||||
* @return {String} 临时路径 |
||||
* @param {String} fileUrl - 网络地址 |
||||
*/ |
||||
export const downloadFile = (fileUrl) => { |
||||
return new Promise((resolve) => { |
||||
uni.downloadFile({ |
||||
url: fileUrl, |
||||
success: (res) => { |
||||
// #ifdef MP-ALIPAY
|
||||
if (res.errMsg === 'downloadFile:ok') { |
||||
resolve({ |
||||
ok: true, |
||||
data: res.errMsg, |
||||
tempFilePath: res.tempFilePath |
||||
}) |
||||
} else { |
||||
resolve({ |
||||
ok: false, |
||||
data: res.errMsg, |
||||
msg: '图片下载失败' |
||||
}) |
||||
} |
||||
// #endif
|
||||
// #ifndef MP-ALIPAY
|
||||
if (res.statusCode === 200) { |
||||
resolve({ |
||||
ok: true, |
||||
data: res.errMsg, |
||||
tempFilePath: res.tempFilePath |
||||
}) |
||||
} else { |
||||
resolve({ |
||||
ok: false, |
||||
data: res.errMsg, |
||||
msg: '图片下载失败' |
||||
}) |
||||
} |
||||
// #endif
|
||||
}, |
||||
fail: (err) => { |
||||
resolve({ |
||||
ok: false, |
||||
data: err.errMsg, |
||||
msg: '图片下载失败' |
||||
}) |
||||
} |
||||
}) |
||||
}) |
||||
} |
||||
|
||||
/** |
||||
* 清理应用已缓存的文件 |
||||
*/ |
||||
export const clearCacheFile = () => { |
||||
// #ifndef H5
|
||||
uni.getSavedFileList({ |
||||
success: (res) => { |
||||
let fileList = res.fileList |
||||
if (fileList.length) { |
||||
for (let i = 0; i < fileList.length; i++) { |
||||
uni.removeSavedFile({ |
||||
filePath: fileList[i].filePath, |
||||
complete: () => { |
||||
console.log('清除缓存已完成') |
||||
} |
||||
}) |
||||
} |
||||
} |
||||
}, |
||||
fail: (err) => { |
||||
console.log('getSavedFileList Fail') |
||||
} |
||||
}) |
||||
// #endif
|
||||
// #ifdef H5
|
||||
clearStore() |
||||
// #endif
|
||||
} |
||||
|
||||
|
||||
|
||||
// 图像转换工具，可用于图像和base64的转换
|
||||
// https://ext.dcloud.net.cn/plugin?id=123
|
||||
const getLocalFilePath = (path) => { |
||||
if ( |
||||
path.indexOf('_www') === 0 || |
||||
path.indexOf('_doc') === 0 || |
||||
path.indexOf('_documents') === 0 || |
||||
path.indexOf('_downloads') === 0 |
||||
) return path |
||||
|
||||
if (path.indexOf('/storage/emulated/0/') === 0) return path |
||||
|
||||
if (path.indexOf('/storage/sdcard0/') === 0) return path |
||||
|
||||
if (path.indexOf('/var/mobile/') === 0) return path |
||||
|
||||
if (path.indexOf('file://') === 0) return path |
||||
|
||||
if (path.indexOf('/') === 0) { |
||||
// ios 无法获取本地路径
|
||||
let localFilePath = plus.os.name === 'iOS' ? path : plus.io.convertLocalFileSystemURL(path) |
||||
if (localFilePath !== path) { |
||||
return localFilePath |
||||
} else { |
||||
path = path.substring(1) |
||||
} |
||||
} |
||||
|
||||
return '_www/' + path |
||||
} |
||||
|
||||
export const pathToBase64 = (path) => { |
||||
return new Promise((resolve, reject) => { |
||||
if (typeof window === 'object' && 'document' in window) { |
||||
if (typeof FileReader === 'function') { |
||||
let xhr = new XMLHttpRequest() |
||||
xhr.open('GET', path, true) |
||||
xhr.responseType = 'blob' |
||||
xhr.onload = function() { |
||||
if (this.status === 200) { |
||||
let fileReader = new FileReader() |
||||
fileReader.onload = function(e) { |
||||
resolve(e.target.result) |
||||
} |
||||
fileReader.onerror = reject |
||||
fileReader.readAsDataURL(this.response) |
||||
} |
||||
} |
||||
xhr.onerror = reject |
||||
xhr.send() |
||||
return |
||||
} |
||||
let canvas = document.createElement('canvas') |
||||
let c2x = canvas.getContext('2d') |
||||
let img = new Image |
||||
img.onload = function() { |
||||
canvas.width = img.width |
||||
canvas.height = img.height |
||||
c2x.drawImage(img, 0, 0) |
||||
resolve(canvas.toDataURL()) |
||||
canvas.height = canvas.width = 0 |
||||
} |
||||
img.onerror = reject |
||||
img.src = path |
||||
return |
||||
} |
||||
|
||||
if (typeof plus === 'object') { |
||||
let tempPath = getLocalFilePath(path) |
||||
plus.io.resolveLocalFileSystemURL(tempPath, (entry) => { |
||||
entry.file((file) => { |
||||
let fileReader = new plus.io.FileReader() |
||||
fileReader.onload = function(data) { |
||||
resolve(data.target.result) |
||||
} |
||||
fileReader.onerror = function(error) { |
||||
console.log(error) |
||||
reject(error) |
||||
} |
||||
fileReader.readAsDataURL(file) |
||||
}, (error) => { |
||||
reject(error) |
||||
}) |
||||
}, (error) => { |
||||
reject(error) |
||||
}) |
||||
return |
||||
} |
||||
|
||||
if (typeof wx === 'object' && wx.canIUse('getFileSystemManager')) { |
||||
wx.getFileSystemManager().readFile({ |
||||
filePath: path, |
||||
encoding: 'base64', |
||||
success: (res) => { |
||||
resolve('data:image/png;base64,' + res.data) |
||||
}, |
||||
fail: (error) => { |
||||
reject(error) |
||||
} |
||||
}) |
||||
return |
||||
} |
||||
reject(new Error('not support')) |
||||
}) |
||||
} |
||||
|
||||
export const base64ToPath = (base64) => { |
||||
return new Promise((resolve, reject) => { |
||||
if (typeof window === 'object' && 'document' in window) { |
||||
base64 = base64.split(',') |
||||
let type = base64[0].match(/:(.*?);/)[1] |
||||
let str = atob(base64[1]) |
||||
let n = str.length |
||||
let array = new Uint8Array(n) |
||||
while (n--) { |
||||
array[n] = str.charCodeAt(n) |
||||
} |
||||
return resolve((window.URL || window.webkitURL).createObjectURL(new Blob([array], { |
||||
type: type |
||||
}))) |
||||
} |
||||
let extName = base64.match(/data\:\S+\/(\S+);/) |
||||
if (extName) { |
||||
extName = extName[1] |
||||
} else { |
||||
reject(new Error('base64 error')) |
||||
} |
||||
let fileName = Date.now() + '.' + extName |
||||
if (typeof plus === 'object') { |
||||
let bitmap = new plus.nativeObj.Bitmap('bitmap' + Date.now()) |
||||
bitmap.loadBase64Data(base64, () => { |
||||
let filePath = '_doc/uniapp_temp/' + fileName |
||||
bitmap.save(filePath, {}, () => { |
||||
bitmap.clear() |
||||
resolve(filePath) |
||||
}, (error) => { |
||||
bitmap.clear() |
||||
reject(error) |
||||
}) |
||||
}, (error) => { |
||||
bitmap.clear() |
||||
reject(error) |
||||
}) |
||||
return |
||||
} |
||||
if (typeof wx === 'object' && wx.canIUse('getFileSystemManager')) { |
||||
let filePath = wx.env.USER_DATA_PATH + '/' + fileName |
||||
wx.getFileSystemManager().writeFile({ |
||||
filePath: filePath, |
||||
data: base64.replace(/^data:\S+\/\S+;base64,/, ''), |
||||
encoding: 'base64', |
||||
success: () => { |
||||
resolve(filePath) |
||||
}, |
||||
fail: (error) => { |
||||
reject(error) |
||||
} |
||||
}) |
||||
return |
||||
} |
||||
reject(new Error('not support')) |
||||
}) |
||||
} |
||||
Loading…
Reference in new issue