zhangmeng
2024-04-19 e3ba120cb766a17e098e58d11c39ffc600a3070c
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<template>
    <view
        class="u-line-progress"
        :style="[$u.addStyle(customStyle)]"
    >
        <view
            class="u-line-progress__background"
            ref="u-line-progress__background"
            :style="[{
                backgroundColor: inactiveColor,
                height: $u.addUnit(height),
            }]"
        >
        </view>
        <view
            class="u-line-progress__line"
            :style="[progressStyle]"
        > 
            <slot>
                <text v-if="showText && percentage >= 10" class="u-line-progress__text">{{innserPercentage + '%'}}</text>
            </slot> 
        </view>
    </view>
</template>
 
<script>
    import props from './props.js';
    // #ifdef APP-NVUE
    const dom = uni.requireNativePlugin('dom')
    // #endif
    /**
     * lineProgress 线型进度条
     * @description 展示操作或任务的当前进度,比如上传文件,是一个线形的进度条。
     * @tutorial https://www.uviewui.com/components/lineProgress.html
     * @property {String}            activeColor        激活部分的颜色 ( 默认 '#19be6b' )
     * @property {String}            inactiveColor    背景色 ( 默认 '#ececec' )
     * @property {String | Number}    percentage        进度百分比,数值 ( 默认 0 )
     * @property {Boolean}            showText        是否在进度条内部显示百分比的值 ( 默认 true )
     * @property {String | Number}    height            进度条的高度,单位px ( 默认 12 )
     * 
     * @example <u-line-progress :percent="70" :show-percent="true"></u-line-progress>
     */
    export default {
        name: "u-line-progress",
        mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
        data() {
            return {
                lineWidth: 0,
            }
        },
        watch: {
            percentage(n) {
                this.resizeProgressWidth()
            }
        },
        computed: {
            progressStyle() { 
                let style = {}
                style.width = this.lineWidth
                style.backgroundColor = this.activeColor
                style.height = uni.$u.addUnit(this.height)
                return style
            },
            innserPercentage() {
                // 控制范围在0-100之间
                return uni.$u.range(0, 100, this.percentage)
            }
        },
        mounted() {
            this.init()
        },
        methods: {
            init() {
                uni.$u.sleep(20).then(() => {
                    this.resizeProgressWidth()
                })
            },
            getProgressWidth() {
                // #ifndef APP-NVUE
                return this.$uGetRect('.u-line-progress__background')
                // #endif
 
                // #ifdef APP-NVUE
                // 返回一个promise
                return new Promise(resolve => {
                    dom.getComponentRect(this.$refs['u-line-progress__background'], (res) => {
                        resolve(res.size)
                    })
                })
                // #endif
            },
            resizeProgressWidth() {
                this.getProgressWidth().then(size => {
                    const {
                        width
                    } = size
                    // 通过设置的percentage值,计算其所占总长度的百分比
                    this.lineWidth = width * this.innserPercentage / 100 + 'px'
                })
            }
        }
    }
</script>
 
<style lang="scss" scoped>
    @import "../../libs/css/components.scss";
 
    .u-line-progress {
        align-items: stretch;
        position: relative;
        @include flex(row);
        flex: 1;
        overflow: hidden;
        border-radius: 100px;
 
        &__background {
            background-color: #ececec;
            border-radius: 100px;
            flex: 1;
        }
 
        &__line {
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            align-items: center;
            @include flex(row);
            color: #ffffff;
            border-radius: 100px;
            transition: width 0.5s ease;
            justify-content: flex-end;
        }
 
        &__text {
            font-size: 10px;
            align-items: center;
            text-align: right;
            color: #FFFFFF;
            margin-right: 5px;
            transform: scale(0.9);
        }
    }
</style>