1190 lines
34 KiB
TypeScript
1190 lines
34 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import Measure from 'react-measure';
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import React, { useEffect, useState } from 'react';
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import classNames from 'classnames';
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import { createPortal } from 'react-dom';
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import { fabric } from 'fabric';
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import { get, has, noop } from 'lodash';
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import type { LocalizerType } from '../types/Util';
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import type { Props as StickerButtonProps } from './stickers/StickerButton';
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import type { ImageStateType } from '../mediaEditor/ImageStateType';
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import * as log from '../logging/log';
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import { Button, ButtonVariant } from './Button';
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import { ContextMenu } from './ContextMenu';
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import { Slider } from './Slider';
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import { StickerButton } from './stickers/StickerButton';
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import { Theme } from '../util/theme';
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import { canvasToBytes } from '../util/canvasToBytes';
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import { useFabricHistory } from '../mediaEditor/useFabricHistory';
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import { usePortal } from '../hooks/usePortal';
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import { useUniqueId } from '../hooks/useUniqueId';
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import { MediaEditorFabricPencilBrush } from '../mediaEditor/MediaEditorFabricPencilBrush';
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import { MediaEditorFabricCropRect } from '../mediaEditor/MediaEditorFabricCropRect';
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import { MediaEditorFabricIText } from '../mediaEditor/MediaEditorFabricIText';
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import { MediaEditorFabricSticker } from '../mediaEditor/MediaEditorFabricSticker';
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import { fabricEffectListener } from '../mediaEditor/fabricEffectListener';
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import { getRGBA, getHSL } from '../mediaEditor/util/color';
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import {
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TextStyle,
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getTextStyleAttributes,
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} from '../mediaEditor/util/getTextStyleAttributes';
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export type PropsType = {
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i18n: LocalizerType;
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imageSrc: string;
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onClose: () => unknown;
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onDone: (data: Uint8Array) => unknown;
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} & Pick<StickerButtonProps, 'installedPacks' | 'recentStickers'>;
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const INITIAL_IMAGE_STATE: ImageStateType = {
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angle: 0,
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cropX: 0,
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cropY: 0,
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flipX: false,
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flipY: false,
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height: 0,
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width: 0,
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};
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enum EditMode {
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Crop = 'Crop',
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Draw = 'Draw',
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Text = 'Text',
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}
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enum DrawWidth {
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Thin = 2,
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Regular = 4,
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Medium = 12,
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Heavy = 24,
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}
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enum DrawTool {
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Pen = 'Pen',
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Highlighter = 'Highlighter',
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}
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type PendingCropType = {
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left: number;
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top: number;
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width: number;
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height: number;
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};
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function isCmdOrCtrl(ev: KeyboardEvent): boolean {
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const { ctrlKey, metaKey } = ev;
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const commandKey = get(window, 'platform') === 'darwin' && metaKey;
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const controlKey = get(window, 'platform') !== 'darwin' && ctrlKey;
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return commandKey || controlKey;
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}
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export const MediaEditor = ({
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i18n,
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imageSrc,
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onClose,
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onDone,
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// StickerButtonProps
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installedPacks,
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recentStickers,
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}: PropsType): JSX.Element | null => {
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const [fabricCanvas, setFabricCanvas] = useState<fabric.Canvas | undefined>();
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const [image, setImage] = useState<HTMLImageElement>(new Image());
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const canvasId = useUniqueId();
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const [imageState, setImageState] =
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useState<ImageStateType>(INITIAL_IMAGE_STATE);
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// History state
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const { canRedo, canUndo, redoIfPossible, takeSnapshot, undoIfPossible } =
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useFabricHistory({
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fabricCanvas,
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imageState,
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setImageState,
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});
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// Initial image load and Fabric canvas setup
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useEffect(() => {
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// This is important. We can't re-run this function if we've already setup
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// a canvas since Fabric doesn't like that.
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if (fabricCanvas) {
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return;
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}
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const img = new Image();
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img.onload = () => {
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setImage(img);
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const canvas = new fabric.Canvas(canvasId);
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canvas.selection = false;
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setFabricCanvas(canvas);
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const newImageState = {
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...INITIAL_IMAGE_STATE,
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height: img.height,
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width: img.width,
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};
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setImageState(newImageState);
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takeSnapshot('initial state', newImageState, canvas);
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};
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img.onerror = () => {
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// This is a bad experience, but it should be impossible.
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log.error('<MediaEditor>: image failed to load. Closing');
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onClose();
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};
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img.src = imageSrc;
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return () => {
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img.onload = noop;
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img.onerror = noop;
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};
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}, [canvasId, fabricCanvas, imageSrc, onClose, takeSnapshot]);
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// Keyboard support
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useEffect(() => {
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if (!fabricCanvas) {
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return noop;
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}
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const globalShortcuts: Array<
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[(ev: KeyboardEvent) => boolean, () => unknown]
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> = [
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[
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ev => isCmdOrCtrl(ev) && ev.key === 'c',
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() => setEditMode(EditMode.Crop),
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],
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[
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ev => isCmdOrCtrl(ev) && ev.key === 'd',
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() => setEditMode(EditMode.Draw),
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],
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[
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ev => isCmdOrCtrl(ev) && ev.key === 't',
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() => setEditMode(EditMode.Text),
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],
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[ev => isCmdOrCtrl(ev) && ev.key === 'z', undoIfPossible],
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[ev => isCmdOrCtrl(ev) && ev.shiftKey && ev.key === 'z', redoIfPossible],
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[
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ev => ev.key === 'Escape',
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() => {
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setEditMode(undefined);
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if (fabricCanvas.getActiveObject()) {
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fabricCanvas.discardActiveObject();
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fabricCanvas.requestRenderAll();
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}
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},
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],
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];
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const objectShortcuts: Array<
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[
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(ev: KeyboardEvent) => boolean,
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(obj: fabric.Object, ev: KeyboardEvent) => unknown
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]
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> = [
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[
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ev => ev.key === 'Delete',
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obj => {
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fabricCanvas.remove(obj);
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setEditMode(undefined);
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},
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],
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[
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ev => ev.key === 'ArrowUp',
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(obj, ev) => {
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const px = ev.shiftKey ? 20 : 1;
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if (ev.altKey) {
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obj.set('angle', (obj.angle || 0) - px);
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} else {
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const { x, y } = obj.getCenterPoint();
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obj.setPositionByOrigin(
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new fabric.Point(x, y - px),
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'center',
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'center'
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);
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}
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obj.setCoords();
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fabricCanvas.requestRenderAll();
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},
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],
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[
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ev => ev.key === 'ArrowLeft',
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(obj, ev) => {
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const px = ev.shiftKey ? 20 : 1;
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if (ev.altKey) {
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obj.set('angle', (obj.angle || 0) - px);
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} else {
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const { x, y } = obj.getCenterPoint();
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obj.setPositionByOrigin(
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new fabric.Point(x - px, y),
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'center',
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'center'
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);
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}
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obj.setCoords();
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fabricCanvas.requestRenderAll();
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},
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],
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[
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ev => ev.key === 'ArrowDown',
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(obj, ev) => {
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const px = ev.shiftKey ? 20 : 1;
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if (ev.altKey) {
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obj.set('angle', (obj.angle || 0) + px);
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} else {
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const { x, y } = obj.getCenterPoint();
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obj.setPositionByOrigin(
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new fabric.Point(x, y + px),
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'center',
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'center'
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);
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}
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obj.setCoords();
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fabricCanvas.requestRenderAll();
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},
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],
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[
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ev => ev.key === 'ArrowRight',
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(obj, ev) => {
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const px = ev.shiftKey ? 20 : 1;
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if (ev.altKey) {
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obj.set('angle', (obj.angle || 0) + px);
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} else {
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const { x, y } = obj.getCenterPoint();
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obj.setPositionByOrigin(
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new fabric.Point(x + px, y),
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'center',
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'center'
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);
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}
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obj.setCoords();
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fabricCanvas.requestRenderAll();
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},
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],
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];
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function handleKeydown(ev: KeyboardEvent) {
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if (!fabricCanvas) {
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return;
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}
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globalShortcuts.forEach(([conditional, runShortcut]) => {
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if (conditional(ev)) {
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runShortcut();
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ev.preventDefault();
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ev.stopPropagation();
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}
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});
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const obj = fabricCanvas.getActiveObject();
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if (
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!obj ||
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obj.excludeFromExport ||
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(obj instanceof MediaEditorFabricIText && obj.isEditing)
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) {
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return;
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}
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objectShortcuts.forEach(([conditional, runShortcut]) => {
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if (conditional(ev)) {
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runShortcut(obj, ev);
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ev.preventDefault();
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ev.stopPropagation();
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}
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});
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}
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document.addEventListener('keydown', handleKeydown);
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return () => {
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document.removeEventListener('keydown', handleKeydown);
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};
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}, [fabricCanvas, redoIfPossible, undoIfPossible]);
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const [containerWidth, setContainerWidth] = useState(0);
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const [containerHeight, setContainerHeight] = useState(0);
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const zoom =
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Math.min(
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containerWidth / imageState.width,
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containerHeight / imageState.height
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) || 1;
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// Update the canvas dimensions (and therefore zoom)
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useEffect(() => {
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if (!fabricCanvas || !imageState.width || !imageState.height) {
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return;
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}
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fabricCanvas.setDimensions({
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width: imageState.width * zoom,
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height: imageState.height * zoom,
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});
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fabricCanvas.setZoom(zoom);
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}, [
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containerHeight,
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containerWidth,
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fabricCanvas,
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imageState.height,
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imageState.width,
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zoom,
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]);
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// Refresh the background image according to imageState changes
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useEffect(() => {
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if (!fabricCanvas) {
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return;
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}
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drawFabricBackgroundImage({ fabricCanvas, image, imageState });
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}, [fabricCanvas, image, imageState]);
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const [canCrop, setCanCrop] = useState(false);
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const [cropAspectRatioLock, setCropAspectRatioLock] = useState(false);
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const [drawTool, setDrawTool] = useState<DrawTool>(DrawTool.Pen);
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const [drawWidth, setDrawWidth] = useState<DrawWidth>(DrawWidth.Regular);
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const [editMode, setEditMode] = useState<EditMode | undefined>();
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const [sliderValue, setSliderValue] = useState<number>(0);
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const [textStyle, setTextStyle] = useState<TextStyle>(TextStyle.Regular);
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// If you select a text path auto enter edit mode
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useEffect(() => {
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if (!fabricCanvas) {
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return;
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}
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return fabricEffectListener(
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fabricCanvas,
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['selection:created', 'selection:updated', 'selection:cleared'],
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() => {
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if (fabricCanvas?.getActiveObject() instanceof MediaEditorFabricIText) {
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setEditMode(EditMode.Text);
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} else if (editMode === EditMode.Text) {
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setEditMode(undefined);
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}
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}
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);
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}, [editMode, fabricCanvas]);
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// Ensure scaling is in locked|unlocked state only when cropping
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useEffect(() => {
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if (!fabricCanvas) {
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return;
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}
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if (editMode === EditMode.Crop) {
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fabricCanvas.uniformScaling = cropAspectRatioLock;
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} else {
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fabricCanvas.uniformScaling = true;
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}
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}, [cropAspectRatioLock, editMode, fabricCanvas]);
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// Remove any blank text when edit mode changes off of text
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useEffect(() => {
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if (!fabricCanvas) {
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return;
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}
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if (editMode !== EditMode.Text) {
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const obj = fabricCanvas.getActiveObject();
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if (obj && has(obj, 'text') && get(obj, 'text') === '') {
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fabricCanvas.remove(obj);
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}
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}
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}, [editMode, fabricCanvas]);
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// Toggle draw mode
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useEffect(() => {
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if (!fabricCanvas) {
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return;
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}
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if (editMode !== EditMode.Draw) {
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fabricCanvas.isDrawingMode = false;
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return;
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}
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fabricCanvas.discardActiveObject();
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fabricCanvas.isDrawingMode = true;
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const freeDrawingBrush = new MediaEditorFabricPencilBrush(fabricCanvas);
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if (drawTool === DrawTool.Highlighter) {
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freeDrawingBrush.color = getRGBA(sliderValue, 0.5);
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freeDrawingBrush.strokeLineCap = 'square';
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freeDrawingBrush.strokeLineJoin = 'miter';
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freeDrawingBrush.width = (drawWidth / zoom) * 2;
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} else {
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freeDrawingBrush.color = getHSL(sliderValue);
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freeDrawingBrush.strokeLineCap = 'round';
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freeDrawingBrush.strokeLineJoin = 'bevel';
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freeDrawingBrush.width = drawWidth / zoom;
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}
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fabricCanvas.freeDrawingBrush = freeDrawingBrush;
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fabricCanvas.requestRenderAll();
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}, [drawTool, drawWidth, editMode, fabricCanvas, sliderValue, zoom]);
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// Change text style
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useEffect(() => {
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if (!fabricCanvas) {
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return;
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}
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const obj = fabricCanvas.getActiveObject();
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if (!obj || !(obj instanceof MediaEditorFabricIText)) {
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return;
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}
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obj.exitEditing();
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obj.set(getTextStyleAttributes(textStyle, sliderValue));
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fabricCanvas.requestRenderAll();
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}, [fabricCanvas, sliderValue, textStyle]);
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// Create the CroppingRect
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useEffect(() => {
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if (!fabricCanvas) {
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return;
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}
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if (editMode === EditMode.Crop) {
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const PADDING = MediaEditorFabricCropRect.PADDING / zoom;
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// For reasons we don't understand, height and width on small images doesn't work
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// right (it bleeds out) so we decrease them for small images.
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const height =
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imageState.height - PADDING * Math.max(440 / imageState.height, 2);
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const width =
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imageState.width - PADDING * Math.max(440 / imageState.width, 2);
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let rect: MediaEditorFabricCropRect;
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const obj = fabricCanvas.getActiveObject();
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if (obj instanceof MediaEditorFabricCropRect) {
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rect = obj;
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rect.set({ height, width, scaleX: 1, scaleY: 1 });
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} else {
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rect = new MediaEditorFabricCropRect({
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height,
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width,
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});
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rect.on('modified', () => {
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const { height: currHeight, width: currWidth } =
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rect.getBoundingRect(true);
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setCanCrop(currHeight < height || currWidth < width);
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});
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rect.on('deselected', () => {
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setEditMode(undefined);
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});
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fabricCanvas.add(rect);
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fabricCanvas.setActiveObject(rect);
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}
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fabricCanvas.viewportCenterObject(rect);
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rect.setCoords();
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} else {
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fabricCanvas.getObjects().forEach(obj => {
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if (obj instanceof MediaEditorFabricCropRect) {
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fabricCanvas.remove(obj);
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}
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});
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}
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setCanCrop(false);
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}, [editMode, fabricCanvas, imageState.height, imageState.width, zoom]);
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// Create an IText node when edit mode changes to Text
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useEffect(() => {
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if (!fabricCanvas) {
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return;
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}
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if (editMode !== EditMode.Text) {
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return;
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}
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const obj = fabricCanvas.getActiveObject();
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if (obj instanceof MediaEditorFabricIText) {
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return;
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}
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const FONT_SIZE_RELATIVE_TO_CANVAS = 10;
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const fontSize =
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Math.min(imageState.width, imageState.height) /
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FONT_SIZE_RELATIVE_TO_CANVAS;
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const text = new MediaEditorFabricIText('', {
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...getTextStyleAttributes(textStyle, sliderValue),
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fontSize,
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});
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text.setPositionByOrigin(
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new fabric.Point(imageState.width / 2, imageState.height / 2),
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'center',
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'center'
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);
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text.setCoords();
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fabricCanvas.add(text);
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fabricCanvas.setActiveObject(text);
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text.enterEditing();
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}, [
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editMode,
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fabricCanvas,
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imageState.height,
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imageState.width,
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sliderValue,
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textStyle,
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]);
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const [isSaving, setIsSaving] = useState(false);
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// In an ideal world we'd use <ModalHost /> to get the nice animation benefits
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// but because of the way IText is implemented -- with a hidden textarea -- to
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// capture keyboard events, we can't use ModalHost since that traps focus, and
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// focus trapping doesn't play nice with fabric's IText.
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const portal = usePortal();
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if (!portal) {
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return null;
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}
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let tooling: JSX.Element | undefined;
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if (editMode === EditMode.Text) {
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tooling = (
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<>
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<Slider
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handleStyle={{ backgroundColor: getHSL(sliderValue) }}
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label={i18n('CustomColorEditor__hue')}
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moduleClassName="MediaEditor__hue-slider MediaEditor__tools__tool"
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onChange={setSliderValue}
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value={sliderValue}
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/>
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<ContextMenu
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|
buttonClassName={classNames('MediaEditor__tools__tool', {
|
|
'MediaEditor__tools__button--text-regular':
|
|
textStyle === TextStyle.Regular,
|
|
'MediaEditor__tools__button--text-highlight':
|
|
textStyle === TextStyle.Highlight,
|
|
'MediaEditor__tools__button--text-outline':
|
|
textStyle === TextStyle.Outline,
|
|
})}
|
|
i18n={i18n}
|
|
menuOptions={[
|
|
{
|
|
icon: 'MediaEditor__icon--text-regular',
|
|
label: i18n('MediaEditor__text--regular'),
|
|
value: TextStyle.Regular,
|
|
},
|
|
{
|
|
icon: 'MediaEditor__icon--text-highlight',
|
|
label: i18n('MediaEditor__text--highlight'),
|
|
value: TextStyle.Highlight,
|
|
},
|
|
{
|
|
icon: 'MediaEditor__icon--text-outline',
|
|
label: i18n('MediaEditor__text--outline'),
|
|
value: TextStyle.Outline,
|
|
},
|
|
]}
|
|
onChange={value => setTextStyle(value)}
|
|
theme={Theme.Dark}
|
|
value={textStyle}
|
|
/>
|
|
<button
|
|
className="MediaEditor__tools__tool MediaEditor__tools__button MediaEditor__tools__button--words"
|
|
onClick={() => {
|
|
setEditMode(undefined);
|
|
|
|
const activeObject = fabricCanvas?.getActiveObject();
|
|
if (activeObject instanceof MediaEditorFabricIText) {
|
|
activeObject.exitEditing();
|
|
}
|
|
}}
|
|
type="button"
|
|
>
|
|
{i18n('done')}
|
|
</button>
|
|
</>
|
|
);
|
|
} else if (editMode === EditMode.Draw) {
|
|
tooling = (
|
|
<>
|
|
<Slider
|
|
handleStyle={{ backgroundColor: getHSL(sliderValue) }}
|
|
label={i18n('CustomColorEditor__hue')}
|
|
moduleClassName="MediaEditor__tools__tool MediaEditor__hue-slider"
|
|
onChange={setSliderValue}
|
|
value={sliderValue}
|
|
/>
|
|
<ContextMenu
|
|
buttonClassName={classNames('MediaEditor__tools__tool', {
|
|
'MediaEditor__tools__button--draw-pen': drawTool === DrawTool.Pen,
|
|
'MediaEditor__tools__button--draw-highlighter':
|
|
drawTool === DrawTool.Highlighter,
|
|
})}
|
|
i18n={i18n}
|
|
menuOptions={[
|
|
{
|
|
icon: 'MediaEditor__icon--draw-pen',
|
|
label: i18n('MediaEditor__draw--pen'),
|
|
value: DrawTool.Pen,
|
|
},
|
|
{
|
|
icon: 'MediaEditor__icon--draw-highlighter',
|
|
label: i18n('MediaEditor__draw--highlighter'),
|
|
value: DrawTool.Highlighter,
|
|
},
|
|
]}
|
|
onChange={value => setDrawTool(value)}
|
|
theme={Theme.Dark}
|
|
value={drawTool}
|
|
/>
|
|
<ContextMenu
|
|
buttonClassName={classNames('MediaEditor__tools__tool', {
|
|
'MediaEditor__tools__button--width-thin':
|
|
drawWidth === DrawWidth.Thin,
|
|
'MediaEditor__tools__button--width-regular':
|
|
drawWidth === DrawWidth.Regular,
|
|
'MediaEditor__tools__button--width-medium':
|
|
drawWidth === DrawWidth.Medium,
|
|
'MediaEditor__tools__button--width-heavy':
|
|
drawWidth === DrawWidth.Heavy,
|
|
})}
|
|
i18n={i18n}
|
|
menuOptions={[
|
|
{
|
|
icon: 'MediaEditor__icon--width-thin',
|
|
label: i18n('MediaEditor__draw--thin'),
|
|
value: DrawWidth.Thin,
|
|
},
|
|
{
|
|
icon: 'MediaEditor__icon--width-regular',
|
|
label: i18n('MediaEditor__draw--regular'),
|
|
value: DrawWidth.Regular,
|
|
},
|
|
{
|
|
icon: 'MediaEditor__icon--width-medium',
|
|
label: i18n('MediaEditor__draw--medium'),
|
|
value: DrawWidth.Medium,
|
|
},
|
|
{
|
|
icon: 'MediaEditor__icon--width-heavy',
|
|
label: i18n('MediaEditor__draw--heavy'),
|
|
value: DrawWidth.Heavy,
|
|
},
|
|
]}
|
|
onChange={value => setDrawWidth(value)}
|
|
theme={Theme.Dark}
|
|
value={drawWidth}
|
|
/>
|
|
<button
|
|
className="MediaEditor__tools__tool MediaEditor__tools__button MediaEditor__tools__button--words"
|
|
onClick={() => setEditMode(undefined)}
|
|
type="button"
|
|
>
|
|
{i18n('done')}
|
|
</button>
|
|
</>
|
|
);
|
|
} else if (editMode === EditMode.Crop) {
|
|
const canReset =
|
|
imageState.cropX !== 0 ||
|
|
imageState.cropY !== 0 ||
|
|
imageState.flipX ||
|
|
imageState.flipY ||
|
|
imageState.angle !== 0;
|
|
|
|
tooling = (
|
|
<>
|
|
<button
|
|
className="MediaEditor__tools__tool MediaEditor__tools__button MediaEditor__tools__button--words"
|
|
disabled={!canReset}
|
|
onClick={async () => {
|
|
if (!fabricCanvas) {
|
|
return;
|
|
}
|
|
|
|
const newImageState = {
|
|
...INITIAL_IMAGE_STATE,
|
|
height: image.height,
|
|
width: image.width,
|
|
};
|
|
setImageState(newImageState);
|
|
takeSnapshot('reset', newImageState);
|
|
}}
|
|
type="button"
|
|
>
|
|
{i18n('MediaEditor__crop--reset')}
|
|
</button>
|
|
<button
|
|
aria-label={i18n('MediaEditor__crop--rotate')}
|
|
className="MediaEditor__tools__tool MediaEditor__tools__button MediaEditor__tools__button--rotate"
|
|
onClick={() => {
|
|
if (!fabricCanvas) {
|
|
return;
|
|
}
|
|
|
|
fabricCanvas.getObjects().forEach(obj => {
|
|
if (obj instanceof MediaEditorFabricCropRect) {
|
|
return;
|
|
}
|
|
|
|
const center = obj.getCenterPoint();
|
|
|
|
obj.set('angle', ((obj.angle || 0) - 90) % 360);
|
|
|
|
obj.setPositionByOrigin(
|
|
new fabric.Point(center.y, imageState.width - center.x),
|
|
'center',
|
|
'center'
|
|
);
|
|
obj.setCoords();
|
|
});
|
|
|
|
const newImageState = {
|
|
...imageState,
|
|
angle: (imageState.angle + 270) % 360,
|
|
height: imageState.width,
|
|
width: imageState.height,
|
|
};
|
|
setImageState(newImageState);
|
|
takeSnapshot('rotate', newImageState);
|
|
}}
|
|
type="button"
|
|
/>
|
|
<button
|
|
aria-label={i18n('MediaEditor__crop--flip')}
|
|
className="MediaEditor__tools__tool MediaEditor__tools__button MediaEditor__tools__button--flip"
|
|
onClick={() => {
|
|
if (!fabricCanvas) {
|
|
return;
|
|
}
|
|
|
|
const newImageState = {
|
|
...imageState,
|
|
...(imageState.angle % 180
|
|
? { flipY: !imageState.flipY }
|
|
: { flipX: !imageState.flipX }),
|
|
};
|
|
setImageState(newImageState);
|
|
takeSnapshot('flip', newImageState);
|
|
}}
|
|
type="button"
|
|
/>
|
|
<button
|
|
aria-label={i18n('MediaEditor__crop--lock')}
|
|
className={classNames(
|
|
'MediaEditor__tools__button',
|
|
`MediaEditor__tools__button--crop-${
|
|
cropAspectRatioLock ? '' : 'un'
|
|
}locked`
|
|
)}
|
|
onClick={() => {
|
|
if (fabricCanvas) {
|
|
fabricCanvas.uniformScaling = !cropAspectRatioLock;
|
|
}
|
|
setCropAspectRatioLock(!cropAspectRatioLock);
|
|
}}
|
|
type="button"
|
|
/>
|
|
<button
|
|
className="MediaEditor__tools__tool MediaEditor__tools__button MediaEditor__tools__button--words"
|
|
disabled={!canCrop}
|
|
onClick={() => {
|
|
if (!fabricCanvas) {
|
|
return;
|
|
}
|
|
|
|
const pendingCrop = getPendingCrop(fabricCanvas);
|
|
if (!pendingCrop) {
|
|
return;
|
|
}
|
|
|
|
const newImageState = getNewImageStateFromCrop(
|
|
imageState,
|
|
pendingCrop
|
|
);
|
|
setImageState(newImageState);
|
|
moveFabricObjectsForCrop(fabricCanvas, pendingCrop);
|
|
takeSnapshot('crop', newImageState);
|
|
setEditMode(undefined);
|
|
}}
|
|
type="button"
|
|
>
|
|
{i18n('done')}
|
|
</button>
|
|
</>
|
|
);
|
|
}
|
|
|
|
return createPortal(
|
|
<div className="MediaEditor">
|
|
<div className="MediaEditor__container">
|
|
<Measure
|
|
bounds
|
|
onResize={({ bounds }) => {
|
|
if (!bounds) {
|
|
log.error('We should be measuring the bounds');
|
|
return;
|
|
}
|
|
setContainerWidth(bounds.width);
|
|
setContainerHeight(bounds.height);
|
|
}}
|
|
>
|
|
{({ measureRef }) => (
|
|
<div className="MediaEditor__media" ref={measureRef}>
|
|
{image && (
|
|
<div>
|
|
<canvas
|
|
className={classNames('MediaEditor__media--canvas', {
|
|
'MediaEditor__media--canvas--cropping':
|
|
editMode === EditMode.Crop,
|
|
})}
|
|
id={canvasId}
|
|
/>
|
|
</div>
|
|
)}
|
|
</div>
|
|
)}
|
|
</Measure>
|
|
</div>
|
|
<div className="MediaEditor__toolbar">
|
|
{tooling ? (
|
|
<div className="MediaEditor__tools">{tooling}</div>
|
|
) : (
|
|
<div className="MediaEditor__toolbar--space" />
|
|
)}
|
|
<div className="MediaEditor__toolbar--buttons">
|
|
<Button
|
|
onClick={onClose}
|
|
theme={Theme.Dark}
|
|
variant={ButtonVariant.Secondary}
|
|
>
|
|
{i18n('discard')}
|
|
</Button>
|
|
<div className="MediaEditor__controls">
|
|
<button
|
|
aria-label={i18n('MediaEditor__control--draw')}
|
|
className={classNames({
|
|
MediaEditor__control: true,
|
|
'MediaEditor__control--pen': true,
|
|
'MediaEditor__control--selected': editMode === EditMode.Draw,
|
|
})}
|
|
onClick={() => {
|
|
setEditMode(
|
|
editMode === EditMode.Draw ? undefined : EditMode.Draw
|
|
);
|
|
}}
|
|
type="button"
|
|
/>
|
|
<button
|
|
aria-label={i18n('MediaEditor__control--text')}
|
|
className={classNames({
|
|
MediaEditor__control: true,
|
|
'MediaEditor__control--text': true,
|
|
'MediaEditor__control--selected': editMode === EditMode.Text,
|
|
})}
|
|
onClick={() => {
|
|
if (editMode === EditMode.Text) {
|
|
setEditMode(undefined);
|
|
const obj = fabricCanvas?.getActiveObject();
|
|
if (obj instanceof MediaEditorFabricIText) {
|
|
obj.exitEditing();
|
|
}
|
|
} else {
|
|
setEditMode(EditMode.Text);
|
|
}
|
|
}}
|
|
type="button"
|
|
/>
|
|
<StickerButton
|
|
blessedPacks={[]}
|
|
className={classNames({
|
|
MediaEditor__control: true,
|
|
'MediaEditor__control--sticker': true,
|
|
})}
|
|
clearInstalledStickerPack={noop}
|
|
clearShowIntroduction={() => {
|
|
// We're using this as a callback for when the sticker button
|
|
// is pressed.
|
|
fabricCanvas?.discardActiveObject();
|
|
setEditMode(undefined);
|
|
}}
|
|
clearShowPickerHint={noop}
|
|
i18n={i18n}
|
|
installedPacks={installedPacks}
|
|
knownPacks={[]}
|
|
onPickSticker={(_packId, _stickerId, src: string) => {
|
|
if (!fabricCanvas) {
|
|
return;
|
|
}
|
|
|
|
const STICKER_SIZE_RELATIVE_TO_CANVAS = 4;
|
|
const size =
|
|
Math.min(imageState.width, imageState.height) /
|
|
STICKER_SIZE_RELATIVE_TO_CANVAS;
|
|
|
|
const sticker = new MediaEditorFabricSticker(src);
|
|
sticker.scaleToHeight(size);
|
|
sticker.setPositionByOrigin(
|
|
new fabric.Point(imageState.width / 2, imageState.height / 2),
|
|
'center',
|
|
'center'
|
|
);
|
|
sticker.setCoords();
|
|
|
|
fabricCanvas.add(sticker);
|
|
fabricCanvas.setActiveObject(sticker);
|
|
setEditMode(undefined);
|
|
}}
|
|
receivedPacks={[]}
|
|
recentStickers={recentStickers}
|
|
showPickerHint={false}
|
|
theme={Theme.Dark}
|
|
/>
|
|
<button
|
|
aria-label={i18n('MediaEditor__control--crop')}
|
|
className={classNames({
|
|
MediaEditor__control: true,
|
|
'MediaEditor__control--crop': true,
|
|
'MediaEditor__control--selected': editMode === EditMode.Crop,
|
|
})}
|
|
onClick={() => {
|
|
if (!fabricCanvas) {
|
|
return;
|
|
}
|
|
if (editMode === EditMode.Crop) {
|
|
const obj = fabricCanvas.getActiveObject();
|
|
if (obj instanceof MediaEditorFabricCropRect) {
|
|
fabricCanvas.remove(obj);
|
|
}
|
|
setEditMode(undefined);
|
|
} else {
|
|
setEditMode(EditMode.Crop);
|
|
}
|
|
}}
|
|
type="button"
|
|
/>
|
|
<button
|
|
aria-label={i18n('MediaEditor__control--undo')}
|
|
className="MediaEditor__control MediaEditor__control--undo"
|
|
disabled={!canUndo}
|
|
onClick={() => {
|
|
if (editMode === EditMode.Crop) {
|
|
setEditMode(undefined);
|
|
}
|
|
undoIfPossible();
|
|
}}
|
|
type="button"
|
|
/>
|
|
<button
|
|
aria-label={i18n('MediaEditor__control--redo')}
|
|
className="MediaEditor__control MediaEditor__control--redo"
|
|
disabled={!canRedo}
|
|
onClick={() => {
|
|
if (editMode === EditMode.Crop) {
|
|
setEditMode(undefined);
|
|
}
|
|
redoIfPossible();
|
|
}}
|
|
type="button"
|
|
/>
|
|
</div>
|
|
<Button
|
|
disabled={!image || isSaving}
|
|
onClick={async () => {
|
|
if (!fabricCanvas) {
|
|
return;
|
|
}
|
|
|
|
setEditMode(undefined);
|
|
setIsSaving(true);
|
|
|
|
let data: Uint8Array;
|
|
try {
|
|
const renderFabricCanvas = await cloneFabricCanvas(
|
|
fabricCanvas
|
|
);
|
|
|
|
renderFabricCanvas.remove(
|
|
...renderFabricCanvas
|
|
.getObjects()
|
|
.filter(obj => obj.excludeFromExport)
|
|
);
|
|
|
|
let finalImageState: ImageStateType;
|
|
const pendingCrop = getPendingCrop(fabricCanvas);
|
|
if (pendingCrop) {
|
|
finalImageState = getNewImageStateFromCrop(
|
|
imageState,
|
|
pendingCrop
|
|
);
|
|
moveFabricObjectsForCrop(renderFabricCanvas, pendingCrop);
|
|
drawFabricBackgroundImage({
|
|
fabricCanvas: renderFabricCanvas,
|
|
image,
|
|
imageState: finalImageState,
|
|
});
|
|
} else {
|
|
finalImageState = imageState;
|
|
}
|
|
|
|
renderFabricCanvas.setDimensions({
|
|
width: finalImageState.width,
|
|
height: finalImageState.height,
|
|
});
|
|
renderFabricCanvas.setZoom(1);
|
|
const renderedCanvas = renderFabricCanvas.toCanvasElement();
|
|
|
|
data = await canvasToBytes(renderedCanvas);
|
|
} catch (err) {
|
|
onClose();
|
|
throw err;
|
|
} finally {
|
|
setIsSaving(false);
|
|
}
|
|
|
|
onDone(data);
|
|
}}
|
|
theme={Theme.Dark}
|
|
variant={ButtonVariant.Primary}
|
|
>
|
|
{i18n('save')}
|
|
</Button>
|
|
</div>
|
|
</div>
|
|
</div>,
|
|
portal
|
|
);
|
|
};
|
|
|
|
function getPendingCrop(
|
|
fabricCanvas: fabric.Canvas
|
|
): undefined | PendingCropType {
|
|
const activeObject = fabricCanvas.getActiveObject();
|
|
return activeObject instanceof MediaEditorFabricCropRect
|
|
? activeObject.getBoundingRect(true)
|
|
: undefined;
|
|
}
|
|
|
|
function getNewImageStateFromCrop(
|
|
state: Readonly<ImageStateType>,
|
|
{ left, height, top, width }: Readonly<PendingCropType>
|
|
): ImageStateType {
|
|
let cropX: number;
|
|
let cropY: number;
|
|
switch (state.angle) {
|
|
case 0:
|
|
cropX = state.cropX + left;
|
|
cropY = state.cropY + top;
|
|
break;
|
|
case 90:
|
|
cropX = state.cropX + top;
|
|
cropY = state.cropY + (state.width - (left + width));
|
|
break;
|
|
case 180:
|
|
cropX = state.cropX + (state.width - (left + width));
|
|
cropY = state.cropY + (state.height - (top + height));
|
|
break;
|
|
case 270:
|
|
cropX = state.cropX + (state.height - (top + height));
|
|
cropY = state.cropY + left;
|
|
break;
|
|
default:
|
|
throw new Error('Unexpected angle');
|
|
}
|
|
|
|
return {
|
|
...state,
|
|
cropX,
|
|
cropY,
|
|
height,
|
|
width,
|
|
};
|
|
}
|
|
|
|
function cloneFabricCanvas(original: fabric.Canvas): Promise<fabric.Canvas> {
|
|
return new Promise(resolve => {
|
|
original.clone(resolve);
|
|
});
|
|
}
|
|
|
|
function moveFabricObjectsForCrop(
|
|
fabricCanvas: fabric.Canvas,
|
|
{ left, top }: Readonly<PendingCropType>
|
|
): void {
|
|
fabricCanvas.getObjects().forEach(obj => {
|
|
const { x, y } = obj.getCenterPoint();
|
|
|
|
const translatedCenter = new fabric.Point(x - left, y - top);
|
|
obj.setPositionByOrigin(translatedCenter, 'center', 'center');
|
|
obj.setCoords();
|
|
});
|
|
}
|
|
|
|
function drawFabricBackgroundImage({
|
|
fabricCanvas,
|
|
image,
|
|
imageState,
|
|
}: Readonly<{
|
|
fabricCanvas: fabric.Canvas;
|
|
image: HTMLImageElement;
|
|
imageState: Readonly<ImageStateType>;
|
|
}>): void {
|
|
const backgroundImage = new fabric.Image(image, {
|
|
canvas: fabricCanvas,
|
|
height: imageState.height || image.height,
|
|
width: imageState.width || image.width,
|
|
});
|
|
|
|
let left: number;
|
|
let top: number;
|
|
switch (imageState.angle) {
|
|
case 0:
|
|
left = 0;
|
|
top = 0;
|
|
break;
|
|
case 90:
|
|
left = imageState.width;
|
|
top = 0;
|
|
break;
|
|
case 180:
|
|
left = imageState.width;
|
|
top = imageState.height;
|
|
break;
|
|
case 270:
|
|
left = 0;
|
|
top = imageState.height;
|
|
break;
|
|
default:
|
|
throw new Error('Unexpected angle');
|
|
}
|
|
|
|
let { height, width } = imageState;
|
|
if (imageState.angle % 180) {
|
|
[width, height] = [height, width];
|
|
}
|
|
|
|
fabricCanvas.setBackgroundImage(
|
|
backgroundImage,
|
|
fabricCanvas.requestRenderAll.bind(fabricCanvas),
|
|
{
|
|
angle: imageState.angle,
|
|
cropX: imageState.cropX,
|
|
cropY: imageState.cropY,
|
|
flipX: imageState.flipX,
|
|
flipY: imageState.flipY,
|
|
left,
|
|
top,
|
|
originX: 'left',
|
|
originY: 'top',
|
|
width,
|
|
height,
|
|
}
|
|
);
|
|
}
|