kk
137 lines
3.6 KiB
Vue
137 lines
3.6 KiB
Vue
<template>
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<div ref="track" class="track-slider" :class="{ 'is-dragging': dragging }">
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<div class="track-fill" :style="{ width: `${handleX + handleSize / 2}px` }"></div>
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<span v-show="!moved" class="track-hint">{{ hint }}</span>
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<div
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class="track-handle"
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:style="{ transform: `translateX(${handleX}px)` }"
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@pointerdown="handleDown"
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>
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<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
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<path d="M5 12h14" />
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<path d="m13 6 6 6-6 6" />
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</svg>
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</div>
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</div>
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</template>
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<script>
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const HANDLE_SIZE = 40;
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export default {
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name: 'trackSlider',
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props: {
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hint: {
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type: String,
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default: '',
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},
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locked: {
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type: Boolean,
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default: false,
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},
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},
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emits: ['drag', 'release'],
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data() {
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return {
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handleSize: HANDLE_SIZE,
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handleX: 0,
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dragging: false,
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moved: false,
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};
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},
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methods: {
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handleDown(event) {
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if (this.locked) return;
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this.dragging = true;
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this.startX = event.clientX;
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this.baseX = this.handleX;
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this.handleEl = event.currentTarget;
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this.handleEl.setPointerCapture(event.pointerId);
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this.handleEl.addEventListener('pointermove', this.handleMove);
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this.handleEl.addEventListener('pointerup', this.handleUp, { once: true });
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},
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handleMove(event) {
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if (!this.dragging) return;
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const maxX = this.$refs.track.clientWidth - HANDLE_SIZE;
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this.handleX = Math.min(Math.max(this.baseX + event.clientX - this.startX, 0), maxX);
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this.moved = this.moved || this.handleX > 0;
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this.$emit('drag', maxX > 0 ? this.handleX / maxX : 0);
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},
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handleUp() {
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this.handleEl.removeEventListener('pointermove', this.handleMove);
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this.dragging = false;
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// 从未移动的误触不视为作答，避免白白消费一次题目
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if (!this.moved) return;
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const maxX = this.$refs.track.clientWidth - HANDLE_SIZE;
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this.$emit('release', maxX > 0 ? this.handleX / maxX : 0);
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},
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reset() {
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this.handleX = 0;
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this.dragging = false;
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this.moved = false;
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},
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},
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};
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</script>
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<style scoped>
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.track-slider {
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position: relative;
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height: 40px;
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margin-top: 12px;
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border-radius: 10px;
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background: #f9fafb;
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border: 1px solid #e5e7eb;
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overflow: hidden;
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user-select: none;
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touch-action: none;
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}
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.track-fill {
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position: absolute;
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inset: 0 auto 0 0;
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background: linear-gradient(90deg, rgba(99, 102, 241, 0.12), rgba(59, 130, 246, 0.18));
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transition: none;
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}
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.track-hint {
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position: absolute;
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inset: 0;
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display: flex;
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align-items: center;
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justify-content: center;
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font-size: 12px;
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color: #9ca3af;
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pointer-events: none;
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}
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.track-handle {
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position: absolute;
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top: -1px;
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left: -1px;
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display: flex;
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align-items: center;
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justify-content: center;
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width: 40px;
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height: 40px;
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border-radius: 10px;
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background: #ffffff;
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border: 1px solid #e5e7eb;
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box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.04);
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color: #6b7280;
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cursor: grab;
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transition: box-shadow 0.15s cubic-bezier(0.2, 0.8, 0.2, 1), background 0.15s cubic-bezier(0.2, 0.8, 0.2, 1);
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}
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.track-handle svg {
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width: 16px;
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height: 16px;
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}
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.track-handle:hover {
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box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15), 0 4px 16px rgba(0, 0, 0, 0.06);
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}
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.is-dragging .track-handle {
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background: linear-gradient(135deg, #6366f1, #3b82f6);
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border-color: transparent;
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color: #ffffff;
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cursor: grabbing;
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box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15), 0 4px 12px rgba(59, 130, 246, 0.35);
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}
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</style>
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