refactor(projects): all file and folder use kebab-case

src/hooks/business/use-image-verify.ts

@@ -0,0 +1,87 @@
+import { onMounted, ref } from 'vue';
+
+/**
+ * 绘制图形验证码
+ * @param width - 图形宽度
+ * @param height - 图形高度
+ */
+export default function useImageVerify(width = 152, height = 40) {
+  const domRef = ref<HTMLCanvasElement>();
+  const imgCode = ref('');
+
+  function setImgCode(code: string) {
+    imgCode.value = code;
+  }
+
+  function getImgCode() {
+    if (!domRef.value) return;
+    imgCode.value = draw(domRef.value, width, height);
+  }
+
+  onMounted(() => {
+    getImgCode();
+  });
+
+  return {
+    domRef,
+    imgCode,
+    setImgCode,
+    getImgCode
+  };
+}
+
+function randomNum(min: number, max: number) {
+  const num = Math.floor(Math.random() * (max - min) + min);
+  return num;
+}
+
+function randomColor(min: number, max: number) {
+  const r = randomNum(min, max);
+  const g = randomNum(min, max);
+  const b = randomNum(min, max);
+  return `rgb(${r},${g},${b})`;
+}
+
+function draw(dom: HTMLCanvasElement, width: number, height: number) {
+  let imgCode = '';
+
+  const NUMBER_STRING = '0123456789';
+
+  const ctx = dom.getContext('2d');
+  if (!ctx) return imgCode;
+
+  ctx.fillStyle = randomColor(180, 230);
+  ctx.fillRect(0, 0, width, height);
+
+  for (let i = 0; i < 4; i += 1) {
+    const text = NUMBER_STRING[randomNum(0, NUMBER_STRING.length)];
+    imgCode += text;
+    const fontSize = randomNum(18, 41);
+    const deg = randomNum(-30, 30);
+    ctx.font = `${fontSize}px Simhei`;
+    ctx.textBaseline = 'top';
+    ctx.fillStyle = randomColor(80, 150);
+    ctx.save();
+    ctx.translate(30 * i + 23, 15);
+    ctx.rotate((deg * Math.PI) / 180);
+    ctx.fillText(text, -15 + 5, -15);
+    ctx.restore();
+  }
+  for (let i = 0; i < 5; i += 1) {
+    ctx.beginPath();
+    ctx.moveTo(randomNum(0, width), randomNum(0, height));
+    ctx.lineTo(randomNum(0, width), randomNum(0, height));
+    ctx.strokeStyle = randomColor(180, 230);
+    ctx.closePath();
+    ctx.stroke();
+  }
+  for (let i = 0; i < 41; i += 1) {
+    ctx.beginPath();
+    ctx.arc(randomNum(0, width), randomNum(0, height), 1, 0, 2 * Math.PI);
+    ctx.closePath();
+    ctx.fillStyle = randomColor(150, 200);
+    ctx.fill();
+  }
+
+  return imgCode;
+}