feat: add vue3(element-plus)

yudao-ui-admin-vue3/src/hooks/web/useWatermark.ts

@@ -0,0 +1,55 @@
+const domSymbol = Symbol('watermark-dom')
+
+export function useWatermark(appendEl: HTMLElement | null = document.body) {
+  let func: Fn = () => {}
+  const id = domSymbol.toString()
+  const clear = () => {
+    const domId = document.getElementById(id)
+    if (domId) {
+      const el = appendEl
+      el && el.removeChild(domId)
+    }
+    window.removeEventListener('resize', func)
+  }
+  const createWatermark = (str: string) => {
+    clear()
+
+    const can = document.createElement('canvas')
+    can.width = 300
+    can.height = 240
+
+    const cans = can.getContext('2d')
+    if (cans) {
+      cans.rotate((-20 * Math.PI) / 120)
+      cans.font = '15px Vedana'
+      cans.fillStyle = 'rgba(0, 0, 0, 0.15)'
+      cans.textAlign = 'left'
+      cans.textBaseline = 'middle'
+      cans.fillText(str, can.width / 20, can.height)
+    }
+
+    const div = document.createElement('div')
+    div.id = id
+    div.style.pointerEvents = 'none'
+    div.style.top = '0px'
+    div.style.left = '0px'
+    div.style.position = 'absolute'
+    div.style.zIndex = '100000000'
+    div.style.width = document.documentElement.clientWidth + 'px'
+    div.style.height = document.documentElement.clientHeight + 'px'
+    div.style.background = 'url(' + can.toDataURL('image/png') + ') left top repeat'
+    const el = appendEl
+    el && el.appendChild(div)
+    return id
+  }
+
+  function setWatermark(str: string) {
+    createWatermark(str)
+    func = () => {
+      createWatermark(str)
+    }
+    window.addEventListener('resize', func)
+  }
+
+  return { setWatermark, clear }
+}