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方法水印字体和透明度

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This commit is contained in:
zjl 2024-10-11 15:15:05 +08:00
parent 879dfb8a74
commit 9a9cc62d22
1 changed files with 35 additions and 33 deletions
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12
src/utils/wartermark.ts
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@ -1,14 +1,15 @@
// 页面添加水印效果 // 页面添加水印效果
const setWatermark = (str: string) => { const setWatermark = (str: string) => {
const id = '1.23452384164.123412416'; const id = '1.23452384164.123412416';
if (document.getElementById(id) !== null) document.body.removeChild(<HTMLElement>document.getElementById(id)); if (document.getElementById(id) !== null)
document.body.removeChild(<HTMLElement>document.getElementById(id));
const can = document.createElement('canvas'); const can = document.createElement('canvas');
can.width = 200; can.width = 200;
can.height = 130; can.height = 130;
const cans = <CanvasRenderingContext2D>can.getContext('2d'); const cans = <CanvasRenderingContext2D>can.getContext('2d');
cans.rotate((-20 * Math.PI) / 180); cans.rotate((-20 * Math.PI) / 180);
cans.font = '12px Vedana'; cans.font = '18px Vedana';
cans.fillStyle = 'rgba(200, 200, 200, 0.30)'; cans.fillStyle = 'rgba(200, 200, 200, 0.40)';
cans.textBaseline = 'middle'; cans.textBaseline = 'middle';
cans.fillText(str, can.width / 10, can.height / 2); cans.fillText(str, can.width / 10, can.height / 2);
const div = document.createElement('div'); const div = document.createElement('div');
@ -38,8 +39,9 @@ const watermark = {
}, },
// 删除水印 // 删除水印
del: () => { del: () => {
let id = '1.23452384164.123412416'; const id = '1.23452384164.123412416';
if (document.getElementById(id) !== null) document.body.removeChild(<HTMLElement>document.getElementById(id)); if (document.getElementById(id) !== null)
document.body.removeChild(<HTMLElement>document.getElementById(id));
}, },
}; };