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wip
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dwelle
parent
b2a6a87b10
commit
0e02366dee
37 changed files with 1095 additions and 596 deletions
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@ -1,16 +1,11 @@
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import {
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exportToCanvas as _exportToCanvas,
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type ExportToCanvasConfig,
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type ExportToCanvasData,
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exportToSvg as _exportToSvg,
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} from "../excalidraw/scene/export";
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import { getDefaultAppState } from "../excalidraw/appState";
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import type { AppState, BinaryFiles } from "../excalidraw/types";
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import type {
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ExcalidrawElement,
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ExcalidrawFrameLikeElement,
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NonDeleted,
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} from "../excalidraw/element/types";
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import { restore } from "../excalidraw/data/restore";
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import { MIME_TYPES } from "../excalidraw/constants";
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import { COLOR_WHITE, MIME_TYPES } from "../excalidraw/constants";
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import { encodePngMetadata } from "../excalidraw/data/image";
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import { serializeAsJSON } from "../excalidraw/data/json";
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import {
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@ -18,91 +13,48 @@ import {
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copyTextToSystemClipboard,
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copyToClipboard,
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} from "../excalidraw/clipboard";
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import { getNonDeletedElements } from "../excalidraw";
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export { MIME_TYPES };
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type ExportOpts = {
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elements: readonly NonDeleted<ExcalidrawElement>[];
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appState?: Partial<Omit<AppState, "offsetTop" | "offsetLeft">>;
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files: BinaryFiles | null;
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maxWidthOrHeight?: number;
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exportingFrame?: ExcalidrawFrameLikeElement | null;
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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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type ExportToBlobConfig = ExportToCanvasConfig & {
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mimeType?: string;
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quality?: number;
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};
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export const exportToCanvas = ({
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elements,
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appState,
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files,
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maxWidthOrHeight,
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getDimensions,
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exportPadding,
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exportingFrame,
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}: ExportOpts & {
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exportPadding?: number;
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type ExportToSvgConfig = Pick<
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ExportToCanvasConfig,
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"canvasBackgroundColor" | "padding" | "theme" | "exportingFrame"
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> & {
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/**
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* if true, all embeddables passed in will be rendered when possible.
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*/
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renderEmbeddables?: boolean;
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skipInliningFonts?: true;
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reuseImages?: boolean;
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};
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export const exportToCanvas = async ({
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data,
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config,
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}: {
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data: ExportToCanvasData;
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config?: ExportToCanvasConfig;
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}) => {
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const { elements: restoredElements, appState: restoredAppState } = restore(
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{ elements, appState },
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null,
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null,
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);
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const { exportBackground, viewBackgroundColor } = restoredAppState;
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return _exportToCanvas(
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restoredElements,
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{ ...restoredAppState, offsetTop: 0, offsetLeft: 0, width: 0, height: 0 },
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files || {},
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{ exportBackground, exportPadding, viewBackgroundColor, exportingFrame },
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(width: number, height: number) => {
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const canvas = document.createElement("canvas");
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if (maxWidthOrHeight) {
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if (typeof getDimensions === "function") {
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console.warn(
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"`getDimensions()` is ignored when `maxWidthOrHeight` is supplied.",
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);
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}
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const max = Math.max(width, height);
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// if content is less then maxWidthOrHeight, fallback on supplied scale
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const scale =
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maxWidthOrHeight < max
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? maxWidthOrHeight / max
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: appState?.exportScale ?? 1;
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canvas.width = width * scale;
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canvas.height = height * scale;
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return {
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canvas,
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scale,
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};
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}
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const ret = getDimensions?.(width, height) || { width, height };
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canvas.width = ret.width;
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canvas.height = ret.height;
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return {
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canvas,
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scale: ret.scale ?? 1,
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};
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},
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);
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return _exportToCanvas({
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data,
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config,
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});
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};
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export const exportToBlob = async (
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opts: ExportOpts & {
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mimeType?: string;
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quality?: number;
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exportPadding?: number;
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},
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): Promise<Blob> => {
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let { mimeType = MIME_TYPES.png, quality } = opts;
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export const exportToBlob = async ({
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data,
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config,
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}: {
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data: ExportToCanvasData;
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config?: ExportToBlobConfig;
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}): Promise<Blob> => {
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let { mimeType = MIME_TYPES.png, quality } = config || {};
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if (mimeType === MIME_TYPES.png && typeof quality === "number") {
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console.warn(`"quality" will be ignored for "${MIME_TYPES.png}" mimeType`);
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@ -113,17 +65,17 @@ export const exportToBlob = async (
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mimeType = MIME_TYPES.jpg;
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}
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if (mimeType === MIME_TYPES.jpg && !opts.appState?.exportBackground) {
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if (mimeType === MIME_TYPES.jpg && !config?.canvasBackgroundColor === false) {
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console.warn(
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`Defaulting "exportBackground" to "true" for "${MIME_TYPES.jpg}" mimeType`,
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);
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opts = {
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...opts,
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appState: { ...opts.appState, exportBackground: true },
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config = {
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...config,
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canvasBackgroundColor: data.appState?.viewBackgroundColor || COLOR_WHITE,
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};
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}
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const canvas = await exportToCanvas(opts);
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const canvas = await _exportToCanvas({ data, config });
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quality = quality ? quality : /image\/jpe?g/.test(mimeType) ? 0.92 : 0.8;
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@ -136,7 +88,7 @@ export const exportToBlob = async (
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if (
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blob &&
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mimeType === MIME_TYPES.png &&
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opts.appState?.exportEmbedScene
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data.appState?.exportEmbedScene
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) {
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blob = await encodePngMetadata({
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blob,
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@ -144,9 +96,9 @@ export const exportToBlob = async (
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// NOTE as long as we're using the Scene hack, we need to ensure
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// we pass the original, uncloned elements when serializing
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// so that we keep ids stable
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opts.elements,
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opts.appState,
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opts.files || {},
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data.elements,
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data.appState,
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data.files || {},
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"local",
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),
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});
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@ -160,53 +112,51 @@ export const exportToBlob = async (
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};
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export const exportToSvg = async ({
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elements,
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appState = getDefaultAppState(),
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files = {},
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exportPadding,
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renderEmbeddables,
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exportingFrame,
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skipInliningFonts,
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reuseImages,
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}: Omit<ExportOpts, "getDimensions"> & {
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exportPadding?: number;
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renderEmbeddables?: boolean;
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skipInliningFonts?: true;
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reuseImages?: boolean;
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data,
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config,
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}: {
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data: ExportToCanvasData;
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config?: ExportToSvgConfig;
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}): Promise<SVGSVGElement> => {
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const { elements: restoredElements, appState: restoredAppState } = restore(
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{ elements, appState },
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{ ...data, files: data.files || {} },
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null,
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null,
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);
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const exportAppState = {
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...restoredAppState,
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exportPadding,
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};
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const appState = { ...restoredAppState, exportPadding: config?.padding };
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const elements = getNonDeletedElements(restoredElements);
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const files = data.files || {};
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return _exportToSvg(restoredElements, exportAppState, files, {
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exportingFrame,
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renderEmbeddables,
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skipInliningFonts,
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reuseImages,
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return _exportToSvg({
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data: { elements, appState, files },
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config: {
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exportingFrame: config?.exportingFrame,
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renderEmbeddables: config?.renderEmbeddables,
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skipInliningFonts: config?.skipInliningFonts,
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reuseImages: config?.reuseImages,
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},
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});
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};
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export const exportToClipboard = async (
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opts: ExportOpts & {
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mimeType?: string;
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quality?: number;
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type: "png" | "svg" | "json";
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},
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) => {
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if (opts.type === "svg") {
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const svg = await exportToSvg(opts);
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export const exportToClipboard = async ({
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type,
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data,
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config,
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}: {
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data: ExportToCanvasData;
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} & (
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| { type: "png"; config?: ExportToBlobConfig }
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| { type: "svg"; config?: ExportToSvgConfig }
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| { type: "json"; config?: never }
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)) => {
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if (type === "svg") {
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const svg = await exportToSvg({ data, config });
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await copyTextToSystemClipboard(svg.outerHTML);
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} else if (opts.type === "png") {
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await copyBlobToClipboardAsPng(exportToBlob(opts));
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} else if (opts.type === "json") {
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await copyToClipboard(opts.elements, opts.files);
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} else if (type === "png") {
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await copyBlobToClipboardAsPng(exportToBlob({ data, config }));
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} else if (type === "json") {
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await copyToClipboard(data.elements, data.files);
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} else {
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throw new Error("Invalid export type");
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}
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