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| <template>
<div>
<h1>输入文字生成文字 logo</h1>
<input v-model="companyName" type="text" placeholder="请输入文字">
<button @click="generateLogo">生成 logo</button>
<button @click="downloadLogo">下载 logo</button>
<div id="logo" ref="logoRef" :style="{ backgroundColor: logoBgColor }">{{ logoText }}</div>
<h1>输入信息生成二维码</h1>
<input v-model="companyName2" type="text" placeholder="请输入title">
<br />
<textarea v-model="address" placeholder="请输入信息" cols="22" rows="5"></textarea>
<br />
<button @click="generateQRCode">生成二维码</button>
<div id="qrcode" v-html="qrcodeHtml"></div>
<div id="companyNameDisplay">{{ companyName2 }}</div>
</div>
</template>
<script lang="ts" setup>
import { ref, type Ref } from 'vue';
// 假设 qrcode.min.js 已经安装并导入
import QRCode from 'qrcode-generator';
// 定义响应式变量的类型
const companyName: Ref<string> = ref('');
const logoText: Ref<string> = ref('');
const logoBgColor: Ref<string> = ref('');
const companyName2: Ref<string> = ref('');
const address: Ref<string> = ref('');
const qrcodeHtml: Ref<string> = ref('');
const logoRef: Ref<HTMLElement | null> = ref(null);
const generateLogo = () => {
if (companyName.value.length === 4) {
logoText.value = `${companyName.value.slice(0, 2)}\n${companyName.value.slice(2)}`;
} else {
logoText.value = companyName.value;
}
const randomColor = '#' + Math.floor(Math.random() * 16777215).toString(16);
logoBgColor.value = randomColor;
};
const downloadLogo = async () => {
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
const text = logoText.value;
const color = logoRef.value?.style.backgroundColor || '';
canvas.width = 2048;
canvas.height = 2048;
// 设置字体样式，与页面上的 logo 字体大小一致
if (ctx) {
ctx.font = '748px Arial';
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
// 清空画布
ctx.clearRect(0, 0, canvas.width, canvas.height);
// 绘制带圆角的背景
const radius = 200;
const x = 0;
const y = 0;
const width = 2048;
const height = 2048;
ctx.beginPath();
ctx.moveTo(x + radius, y);
ctx.lineTo(x + width - radius, y);
ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
ctx.lineTo(x + width, y + height - radius);
ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
ctx.lineTo(x + radius, y + height);
ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
ctx.lineTo(x, y + radius);
ctx.quadraticCurveTo(x, y, x + radius, y);
ctx.closePath();
ctx.fillStyle = color;
ctx.fill();
// 设置文字颜色
ctx.fillStyle = 'white';
// 计算文字位置
const centerX = canvas.width / 2;
const centerY = canvas.height / 2;
// 绘制文字
if (text.includes('\n')) {
const lines = text.split('\n');
const lineHeight = 748;
const totalHeight = lines.length * lineHeight;
const startY = centerY - totalHeight / 2 + lineHeight / 2;
lines.forEach((line, index) => {
ctx.fillText(line, centerX, startY + index * lineHeight);
});
} else {
ctx.fillText(text, centerX, centerY);
}
}
// 创建下载链接
const link = document.createElement('a');
link.href = canvas.toDataURL('image/png');
link.download = companyName.value + 'logo.png';
link.click();
};
const generateQRCode = () => {
qrcodeHtml.value = '';
if (address.value) {
QRCode.stringToBytes = QRCode.stringToBytesFuncs['UTF-8'];
const qr = QRCode(0, 'L');
qr.addData(address.value);
// qr.addData(unescape(encodeURIComponent(address)));
qr.make();
qrcodeHtml.value = qr.createImgTag(4);
}
};
</script>
<style scoped>
body {
font-family: Arial, sans-serif;
text-align: center;
padding-top: 50px;
}
#logo {
font-size: 48px;
font-weight: bold;
margin-top: 20px;
padding: 10px;
border-radius: 20px;
color: white;
white-space: pre-line;
width: 200px;
height: 200px;
box-sizing: border-box;
display: flex;
justify-content: center;
align-items: center;
margin-left: auto;
margin-right: auto;
}
#qrcode {
margin-top: 20px;
}
</style>
|
