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feat: Export API's to export the drawing to canvas, svg and blob (#3258)

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* feat: Export utilities from package/utils

* update

* fix

* collapsible

* Update README.md

* update change

* update

* fix

* Apply suggestions from code review

Co-authored-by: David Luzar <luzar.david@gmail.com>

* Apply suggestions from code review

Co-authored-by: David Luzar <luzar.david@gmail.com>

* update

* Apply suggestions from code review

Co-authored-by: David Luzar <luzar.david@gmail.com>
This commit is contained in:
Aakansha Doshi 2021-03-16 22:21:56 +05:30 • committed by GitHub
parent 84a1863233
commit edc62c550a
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4 changed files with 117 additions and 11 deletions
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32
src/packages/utils.ts
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@ -6,10 +6,11 @@ import { getDefaultAppState } from "../appState";
import { AppState } from "../types";
import { ExcalidrawElement } from "../element/types";
import { getNonDeletedElements } from "../element";
import { restore } from "../data/restore";
type ExportOpts = {
elements: readonly ExcalidrawElement[];
appState?: Omit<AppState, "offsetTop" | "offsetLeft">;
appState?: Partial<Omit<AppState, "offsetTop" | "offsetLeft">>;
getDimensions: (
width: number,
height: number,
@ -18,17 +19,22 @@ type ExportOpts = {
export const exportToCanvas = ({
elements,
appState = getDefaultAppState(),
appState,
getDimensions = (width, height) => ({ width, height, scale: 1 }),
}: ExportOpts) => {
const { elements: restoredElements, appState: restoredAppState } = restore(
{ elements, appState },
null,
);
const {
exportBackground,
viewBackgroundColor,
shouldAddWatermark,
} = restoredAppState;
return _exportToCanvas(
getNonDeletedElements(elements),
{ ...appState, offsetTop: 0, offsetLeft: 0 },
{
exportBackground: appState.exportBackground ?? true,
viewBackgroundColor: appState.viewBackgroundColor ?? "#FFF",
shouldAddWatermark: appState.shouldAddWatermark ?? false,
},
getNonDeletedElements(restoredElements),
{ ...restoredAppState, offsetTop: 0, offsetLeft: 0 },
{ exportBackground, viewBackgroundColor, shouldAddWatermark },
(width: number, height: number) => {
const canvas = document.createElement("canvas");
const ret = getDimensions(width, height);
@ -81,8 +87,12 @@ export const exportToSvg = ({
exportPadding?: number;
metadata?: string;
}): SVGSVGElement => {
return _exportToSvg(getNonDeletedElements(elements), {
...appState,
const { elements: restoredElements, appState: restoredAppState } = restore(
{ elements, appState },
null,
);
return _exportToSvg(getNonDeletedElements(restoredElements), {
...restoredAppState,
exportPadding,
metadata,
});