(function () {
function __canvasWM({
// container = document.body,
container = document.querySelector('.document.body'),
width = '280px',
height = '240px',
textAlign = 'center',
textBaseline = 'middle',
font = "20px microsoft yahei",
fillStyle = 'rgba(184, 184, 184, 0.4)',
content = '请勿外传',
rotate = '30',
zIndex = 1000
} = {}) {
var args = arguments[0];
var canvas = document.createElement('canvas');
canvas.setAttribute('width', width);
canvas.setAttribute('height', height);
var ctx = canvas.getContext("2d");
ctx.textAlign = textAlign;
ctx.textBaseline = textBaseline;
ctx.font = font;
ctx.fillStyle = fillStyle;
ctx.rotate(Math.PI / 180 * rotate);
ctx.fillText(content, parseFloat(width) / 2, parseFloat(height) / 2);
var base64Url = canvas.toDataURL();
const watermarkDiv = document.createElement("div");
watermarkDiv.setAttribute('style', `
position:absolute;
top:0;
left:0;
width:100%;
height:100%;
z-index:${zIndex};
pointer-events:none;
background-repeat:repeat;
background-image:url('${base64Url}')`);
container.style.position = 'relative';
container.insertBefore(watermarkDiv, container.firstChild);
}
window.__canvasWM = __canvasWM;
})();
__canvasWM({
content: 'davidliu(刘郑国)'
})
