ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
36 lines • 5.49 kB
JavaScript
/**
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
*/
/** Returns the ratio of the device's physical pixel resolution to the css pixel resolution */
export function getPixelRatio() {
return window.devicePixelRatio || 1;
}
export function toLowercaseSeparator(key) {
return key.replace(/([A-Z])/g, '-$1').toLowerCase();
}
export function getStyleStr(style) {
const keys = Object.keys(style);
const styleCss = keys.map((key) => `${toLowercaseSeparator(key)}: ${style[key]};`);
return styleCss.join(' ');
}
/** Whether to re-render the watermark */
export function reRendering(mutation, watermarkElement) {
let flag = false;
// Whether to delete the watermark node
if (mutation.removedNodes.length) {
flag = Array.from(mutation.removedNodes).some(node => node === watermarkElement);
}
// Whether the watermark dom property value has been modified
if (mutation.type === 'attributes' && mutation.target === watermarkElement) {
flag = true;
}
return flag;
}
/** Rotate with the watermark as the center point */
export function rotateWatermark(ctx, rotateX, rotateY, rotate) {
ctx.translate(rotateX, rotateY);
ctx.rotate((Math.PI / 180) * Number(rotate));
ctx.translate(-rotateX, -rotateY);
}
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