vant

utils/dist/slider/index.d.ts

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+export {};

utils/dist/slider/index.js

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+import { VantComponent } from '../common/component';
+import { touch } from '../mixins/touch';
+import { addUnit } from '../common/utils';
+VantComponent({
+    mixins: [touch],
+    props: {
+        disabled: Boolean,
+        useButtonSlot: Boolean,
+        activeColor: String,
+        inactiveColor: String,
+        max: {
+            type: Number,
+            value: 100
+        },
+        min: {
+            type: Number,
+            value: 0
+        },
+        step: {
+            type: Number,
+            value: 1
+        },
+        value: {
+            type: Number,
+            value: 0
+        },
+        barHeight: {
+            type: null,
+            value: '2px'
+        }
+    },
+    watch: {
+        value(value) {
+            this.updateValue(value, false);
+        }
+    },
+    created() {
+        this.updateValue(this.data.value);
+    },
+    methods: {
+        onTouchStart(event) {
+            if (this.data.disabled)
+                return;
+            this.touchStart(event);
+            this.startValue = this.format(this.data.value);
+            this.dragStatus = 'start';
+        },
+        onTouchMove(event) {
+            if (this.data.disabled)
+                return;
+            if (this.dragStatus === 'start') {
+                this.$emit('drag-start');
+            }
+            this.touchMove(event);
+            this.dragStatus = 'draging';
+            this.getRect('.van-slider').then((rect) => {
+                const diff = this.deltaX / rect.width * 100;
+                this.newValue = this.startValue + diff;
+                this.updateValue(this.newValue, false, true);
+            });
+        },
+        onTouchEnd() {
+            if (this.data.disabled)
+                return;
+            if (this.dragStatus === 'draging') {
+                this.updateValue(this.newValue, true);
+                this.$emit('drag-end');
+            }
+        },
+        onClick(event) {
+            if (this.data.disabled)
+                return;
+            const { min } = this.data;
+            this.getRect('.van-slider').then((rect) => {
+                const value = (event.detail.x - rect.left) / rect.width * this.getRange() + min;
+                this.updateValue(value, true);
+            });
+        },
+        updateValue(value, end, drag) {
+            value = this.format(value);
+            const { barHeight, min } = this.data;
+            const width = `${((value - min) * 100) / this.getRange()}%`;
+            this.setData({
+                value,
+                barStyle: `
+          width: ${width};
+          height: ${addUnit(barHeight)};
+          ${drag ? 'transition: none;' : ''}
+        `,
+            });
+            if (drag) {
+                this.$emit('drag', { value });
+            }
+            if (end) {
+                this.$emit('change', value);
+            }
+        },
+        getRange() {
+            const { max, min } = this.data;
+            return max - min;
+        },
+        format(value) {
+            const { max, min, step } = this.data;
+            return Math.round(Math.max(min, Math.min(value, max)) / step) * step;
+        }
+    }
+});

utils/dist/slider/index.json

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+{
+  "component": true
+}

utils/dist/slider/index.wxml

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+<wxs src="../wxs/utils.wxs" module="utils" />
+
+<view
+  class="custom-class {{ utils.bem('slider', { disabled }) }}"
+  style="{{ inactiveColor ? 'background:' + inactiveColor : '' }}"
+  bind:tap="onClick"
+>
+  <view
+    class="van-slider__bar"
+    style="{{ barStyle }}; {{ activeColor ? 'background:' + activeColor : '' }}"
+  >
+    <view
+      class="van-slider__button-wrapper"
+      bind:touchstart="onTouchStart"
+      catch:touchmove="onTouchMove"
+      bind:touchend="onTouchEnd"
+      bind:touchcancel="onTouchEnd"
+    >
+      <slot
+        wx:if="{{ useButtonSlot }}"
+        name="button"
+      />
+      <view
+        wx:else
+        class="van-slider__button"
+      />
+    </view>
+  </view>
+</view>

utils/dist/slider/index.wxss

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+@import '../common/index.wxss';.van-slider{position:relative;border-radius:999px;border-radius:var(--border-radius-max,999px);background-color:#ebedf0;background-color:var(--slider-inactive-background-color,#ebedf0)}.van-slider:before{position:absolute;right:0;left:0;content:"";top:-8px;top:-var(--padding-xs,8px);bottom:-8px;bottom:-var(--padding-xs,8px)}.van-slider__bar{position:relative;border-radius:inherit;transition:width .2s;transition:width var(--animation-duration-fast,.2s);background-color:#1989fa;background-color:var(--slider-active-background-color,#1989fa)}.van-slider__button{width:24px;height:24px;border-radius:50%;box-shadow:0 1px 2px rgba(0,0,0,.5);background-color:#fff;background-color:var(--slider-button-background-color,#fff)}.van-slider__button-wrapper{position:absolute;top:50%;right:0;-webkit-transform:translate3d(50%,-50%,0);transform:translate3d(50%,-50%,0)}.van-slider--disabled{opacity:.5}