From a1d7e81859f554f3a53680cc35f0f49bf1f77098 Mon Sep 17 00:00:00 2001
From: wwf <1971391498@qq.com>
Date: 星期四, 14 五月 2026 14:37:02 +0800
Subject: [PATCH] 导入项目
---
src/hooks/web/useWatermark.ts | 72 ++++++++++++++++++++++++++++++++++++
1 files changed, 72 insertions(+), 0 deletions(-)
diff --git a/src/hooks/web/useWatermark.ts b/src/hooks/web/useWatermark.ts
new file mode 100644
index 0000000..028926b
--- /dev/null
+++ b/src/hooks/web/useWatermark.ts
@@ -0,0 +1,72 @@
+import { useAppStore } from '@/store/modules/app'
+import { watch } from 'vue'
+
+const domSymbol = Symbol('watermark-dom')
+
+export function useWatermark(appendEl: HTMLElement | null = document.body) {
+ let func: Fn = () => {}
+ const id = domSymbol.toString()
+ const appStore = useAppStore()
+ let watermarkStr = ''
+
+ 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 = appStore.getIsDark ? 'rgba(255, 255, 255, 0.15)' : '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) {
+ watermarkStr = str
+ createWatermark(str)
+ func = () => {
+ createWatermark(str)
+ }
+ window.addEventListener('resize', func)
+ }
+
+ // 鐩戝惉涓婚鍙樺寲
+ watch(
+ () => appStore.getIsDark,
+ () => {
+ if (watermarkStr) {
+ createWatermark(watermarkStr)
+ }
+ }
+ )
+
+ return { setWatermark, clear }
+}
--
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