90 lines
2.2 KiB
TypeScript
90 lines
2.2 KiB
TypeScript
import {
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exportToCanvas as _exportToCanvas,
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exportToSvg as _exportToSvg,
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} from "../scene/export";
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import { getDefaultAppState } from "../appState";
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import { AppState } from "../types";
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import { ExcalidrawElement } from "../element/types";
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import { getNonDeletedElements } from "../element";
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type ExportOpts = {
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elements: readonly ExcalidrawElement[];
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appState?: Omit<AppState, "offsetTop" | "offsetLeft">;
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getDimensions: (
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width: number,
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height: number,
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) => { width: number; height: number; scale: number };
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};
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export const exportToCanvas = ({
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elements,
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appState = getDefaultAppState(),
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getDimensions = (width, height) => ({ width, height, scale: 1 }),
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}: ExportOpts) => {
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return _exportToCanvas(
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getNonDeletedElements(elements),
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{ ...appState, offsetTop: 0, offsetLeft: 0 },
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{
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exportBackground: appState.exportBackground ?? true,
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viewBackgroundColor: appState.viewBackgroundColor ?? "#FFF",
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shouldAddWatermark: appState.shouldAddWatermark ?? false,
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},
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(width: number, height: number) => {
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const canvas = document.createElement("canvas");
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const ret = getDimensions(width, height);
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canvas.width = ret.width;
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canvas.height = ret.height;
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return { canvas, scale: ret.scale };
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},
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);
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};
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export const exportToBlob = (
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opts: ExportOpts & {
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mimeType?: string;
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quality?: number;
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},
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): Promise<Blob | null> => {
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const canvas = exportToCanvas(opts);
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let { mimeType = "image/png", quality } = opts;
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if (mimeType === "image/png" && typeof quality === "number") {
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console.warn(`"quality" will be ignored for "image/png" mimeType`);
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}
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if (mimeType === "image/jpg") {
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mimeType = "image/jpeg";
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}
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quality = quality ? quality : /image\/jpe?g/.test(mimeType) ? 0.92 : 0.8;
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return new Promise((resolve) => {
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canvas.toBlob(
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(blob: Blob | null) => {
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resolve(blob);
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},
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mimeType,
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quality,
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);
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});
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};
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export const exportToSvg = ({
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elements,
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appState = getDefaultAppState(),
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exportPadding,
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metadata,
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}: ExportOpts & {
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exportPadding?: number;
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metadata?: string;
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}): SVGSVGElement => {
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return _exportToSvg(getNonDeletedElements(elements), {
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...appState,
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exportPadding,
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metadata,
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});
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};
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