51 lines
1.9 KiB
JavaScript
51 lines
1.9 KiB
JavaScript
"use strict";
|
|
|
|
var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.FontGap = exports.BaseSize = void 0;
|
|
exports.default = useWatermark;
|
|
var React = _interopRequireWildcard(require("react"));
|
|
var _utils = require("./utils");
|
|
/**
|
|
* Base size of the canvas, 1 for parallel layout and 2 for alternate layout
|
|
* Only alternate layout is currently supported
|
|
*/
|
|
const BaseSize = exports.BaseSize = 2;
|
|
const FontGap = exports.FontGap = 3;
|
|
// Prevent external hidden elements from adding accent styles
|
|
const emphasizedStyle = {
|
|
visibility: 'visible !important'
|
|
};
|
|
function useWatermark(markStyle) {
|
|
const [watermarkMap] = React.useState(() => new Map());
|
|
const appendWatermark = (base64Url, markWidth, container) => {
|
|
if (container) {
|
|
if (!watermarkMap.get(container)) {
|
|
const newWatermarkEle = document.createElement('div');
|
|
watermarkMap.set(container, newWatermarkEle);
|
|
}
|
|
const watermarkEle = watermarkMap.get(container);
|
|
watermarkEle.setAttribute('style', (0, _utils.getStyleStr)(Object.assign(Object.assign(Object.assign({}, markStyle), {
|
|
backgroundImage: `url('${base64Url}')`,
|
|
backgroundSize: `${Math.floor(markWidth)}px`
|
|
}), emphasizedStyle)));
|
|
// Prevents using the browser `Hide Element` to hide watermarks
|
|
watermarkEle.removeAttribute('class');
|
|
if (watermarkEle.parentElement !== container) {
|
|
container.append(watermarkEle);
|
|
}
|
|
}
|
|
return watermarkMap.get(container);
|
|
};
|
|
const removeWatermark = container => {
|
|
const watermarkEle = watermarkMap.get(container);
|
|
if (watermarkEle && container) {
|
|
container.removeChild(watermarkEle);
|
|
}
|
|
watermarkMap.delete(container);
|
|
};
|
|
const isWatermarkEle = ele => Array.from(watermarkMap.values()).includes(ele);
|
|
return [appendWatermark, removeWatermark, isWatermarkEle];
|
|
} |