44 lines
1.8 KiB
Vue
44 lines
1.8 KiB
Vue
<template>
|
|
<div class="aa-qrcode">
|
|
<svg :width="size" :height="size" :viewBox="'0 0 ' + size + ' ' + size" :fill="color">
|
|
<rect v-for="(rc, i) in cells" :key="i" :x="rc.x" :y="rc.y" :width="cell" :height="cell" />
|
|
</svg>
|
|
<div class="aa-qrcode-text" v-if="showText">{{ value }}</div>
|
|
</div>
|
|
</template>
|
|
|
|
<script setup>
|
|
import { ref, computed } from 'vue';
|
|
const props = defineProps({
|
|
value: { type: String, default: '' }, size: { type: Number, default: 200 },
|
|
color: { type: String, default: '#1F2329' }, showText: { type: Boolean, default: true }
|
|
});
|
|
const n = 25;
|
|
const cell = ref(props.size / n);
|
|
|
|
function matrix(value, n) {
|
|
let seed = 0; for (let i = 0; i < value.length; i++) seed = (seed * 31 + value.charCodeAt(i)) >>> 0;
|
|
const rnd = () => { seed = (seed * 1103515245 + 12345) >>> 0; return seed / 4294967296; };
|
|
const m = []; for (let r = 0; r < n; r++) m.push(new Array(n).fill(false));
|
|
for (let r = 0; r < n; r++) for (let c = 0; c < n; c++) if (rnd() > 0.5) m[r][c] = true;
|
|
const place = (r0, c0) => {
|
|
for (let r = 0; r < 7; r++) for (let c = 0; c < 7; c++) {
|
|
const edge = r === 0 || r === 6 || c === 0 || c === 6, inner = r >= 2 && r <= 4 && c >= 2 && c <= 4;
|
|
m[r0 + r][c0 + c] = edge || inner;
|
|
}
|
|
for (let rr = -1; rr < 8; rr++) for (let cc = -1; cc < 8; cc++) {
|
|
const y = r0 + rr, x = c0 + cc; if (y >= 0 && y < n && x >= 0 && x < n) { if (rr < 0 || rr === 7 || cc < 0 || cc === 7) m[y][x] = false; }
|
|
}
|
|
};
|
|
place(0, 0); place(0, n - 7); place(n - 7, 0);
|
|
return m;
|
|
}
|
|
const cells = computed(() => {
|
|
const m = matrix(props.value, n), out = [];
|
|
for (let r = 0; r < n; r++) for (let c = 0; c < n; c++) if (m[r][c]) out.push({ x: c * cell.value, y: r * cell.value });
|
|
return out;
|
|
});
|
|
</script>
|
|
|
|
<style src="./QRCode.css"></style>
|