@arco-design/web-react
Version:
Arco Design React UI Library.
20 lines (19 loc) • 733 B
JavaScript
;
// canvas渲染图片会导致图片失焦模糊，
// 需要对图片进行缩放保证可读性
Object.defineProperty(exports, "__esModule", { value: true });
exports.getPixelRatio = void 0;
// polyfill 提供了这个方法用来获取设备的 pixel ratio
function getPixelRatio(context) {
if (!context)
return 1;
var backingStore = context.backingStorePixelRatio ||
context.webkitBackingStorePixelRatio ||
context.mozBackingStorePixelRatio ||
context.msBackingStorePixelRatio ||
context.oBackingStorePixelRatio ||
context.backingStorePixelRatio ||
1;
return (window.devicePixelRatio || 1) / backingStore;
}
exports.getPixelRatio = getPixelRatio;