<template>
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<div class="wrap-range">
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<!-- 为了不在子组件中变更值，不用v-model -->
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<input
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type="range"
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:value="brushSize"
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min="1"
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max="30"
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title="调整笔刷粗细"
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@change="(event) => $emit('change-size', +event.target.value)"
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/>
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</div>
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</template>
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<script>
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export default {
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props: {
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size: {
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type: Number,
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default: 5,
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},
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},
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computed:{
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brushSize() {
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return this.size
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}
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}
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};
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// const brushSize = computed(() => props.size);
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</script>
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<style scoped>
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.wrap-range input {
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width: 150px;
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height: 20px;
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margin: 0;
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transform-origin: 75px 75px;
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border-radius: 15px;
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-webkit-appearance: none;
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appearance: none;
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outline: none;
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position: relative;
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}
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.wrap-range input::after {
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display: block;
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content: "";
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width: 0;
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height: 0;
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border: 5px solid transparent;
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border-right: 150px solid #00ccff;
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border-left-width: 0;
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position: absolute;
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left: 0;
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top: 5px;
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border-radius: 15px;
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z-index: 0;
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}
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.wrap-range input[type="range"]::-webkit-slider-thumb,
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.wrap-range input[type="range"]::-moz-range-thumb {
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-webkit-appearance: none;
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}
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.wrap-range input[type="range"]::-webkit-slider-runnable-track,
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.wrap-range input[type="range"]::-moz-range-track {
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height: 10px;
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border-radius: 10px;
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box-shadow: none;
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}
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.wrap-range input[type="range"]::-webkit-slider-thumb {
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-webkit-appearance: none;
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height: 20px;
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width: 20px;
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margin-top: -1px;
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background: #ffffff;
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border-radius: 50%;
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box-shadow: 0 0 8px #00ccff;
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position: relative;
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z-index: 999;
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}
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</style>
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