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Diffstat (limited to 'src/state/models/media/image.ts')
| -rw-r--r-- | src/state/models/media/image.ts | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/src/state/models/media/image.ts b/src/state/models/media/image.ts deleted file mode 100644 index 55f636491..000000000 --- a/src/state/models/media/image.ts +++ /dev/null @@ -1,310 +0,0 @@ -import {Image as RNImage} from 'react-native-image-crop-picker' -import * as ImageManipulator from 'expo-image-manipulator' -import {ActionCrop, FlipType, SaveFormat} from 'expo-image-manipulator' -import {makeAutoObservable, runInAction} from 'mobx' -import {Position} from 'react-avatar-editor' - -import {logger} from '#/logger' -import {POST_IMG_MAX} from 'lib/constants' -import {openCropper} from 'lib/media/picker' -import {Dimensions} from 'lib/media/types' -import {getDataUriSize} from 'lib/media/util' -import {isIOS} from 'platform/detection' - -export interface ImageManipulationAttributes { - aspectRatio?: '4:3' | '1:1' | '3:4' | 'None' - rotate?: number - scale?: number - position?: Position - flipHorizontal?: boolean - flipVertical?: boolean -} - -export interface ImageInitOptions { - path: string - width: number - height: number - altText?: string -} - -const MAX_IMAGE_SIZE_IN_BYTES = 976560 - -export class ImageModel implements Omit<RNImage, 'size'> { - path: string - mime = 'image/jpeg' - width: number - height: number - altText = '' - cropped?: RNImage = undefined - compressed?: RNImage = undefined - - // Web manipulation - prev?: RNImage - attributes: ImageManipulationAttributes = { - aspectRatio: 'None', - scale: 1, - flipHorizontal: false, - flipVertical: false, - rotate: 0, - } - prevAttributes: ImageManipulationAttributes = {} - - constructor(image: ImageInitOptions) { - makeAutoObservable(this) - - this.path = image.path - this.width = image.width - this.height = image.height - if (image.altText !== undefined) { - this.setAltText(image.altText) - } - } - - setRatio(aspectRatio: ImageManipulationAttributes['aspectRatio']) { - this.attributes.aspectRatio = aspectRatio - } - - setRotate(degrees: number) { - this.attributes.rotate = degrees - this.manipulate({}) - } - - flipVertical() { - this.attributes.flipVertical = !this.attributes.flipVertical - this.manipulate({}) - } - - flipHorizontal() { - this.attributes.flipHorizontal = !this.attributes.flipHorizontal - this.manipulate({}) - } - - get ratioMultipliers() { - return { - '4:3': 4 / 3, - '1:1': 1, - '3:4': 3 / 4, - None: this.width / this.height, - } - } - - getUploadDimensions( - dimensions: Dimensions, - maxDimensions: Dimensions = POST_IMG_MAX, - as: ImageManipulationAttributes['aspectRatio'] = 'None', - ) { - const {width, height} = dimensions - const {width: maxWidth, height: maxHeight} = maxDimensions - - return width < maxWidth && height < maxHeight - ? { - width, - height, - } - : this.getResizedDimensions(as, POST_IMG_MAX.width) - } - - getResizedDimensions( - as: ImageManipulationAttributes['aspectRatio'] = 'None', - maxSide: number, - ) { - const ratioMultiplier = this.ratioMultipliers[as] - - if (ratioMultiplier === 1) { - return { - height: maxSide, - width: maxSide, - } - } - - if (ratioMultiplier < 1) { - return { - width: maxSide * ratioMultiplier, - height: maxSide, - } - } - - return { - width: maxSide, - height: maxSide / ratioMultiplier, - } - } - - setAltText(altText: string) { - this.altText = altText.trim() - } - - // Only compress prior to upload - async compress() { - for (let i = 10; i > 0; i--) { - // Float precision - const factor = Math.round(i) / 10 - const compressed = await ImageManipulator.manipulateAsync( - this.cropped?.path ?? this.path, - undefined, - { - compress: factor, - base64: true, - format: SaveFormat.JPEG, - }, - ) - - if (compressed.base64 !== undefined) { - const size = getDataUriSize(compressed.base64) - - if (size < MAX_IMAGE_SIZE_IN_BYTES) { - runInAction(() => { - this.compressed = { - mime: 'image/jpeg', - path: compressed.uri, - size, - ...compressed, - } - }) - return - } - } - } - - // Compression fails when removing redundant information is not possible. - // This can be tested with images that have high variance in noise. - throw new Error('Failed to compress image') - } - - // Mobile - async crop() { - try { - // NOTE - // on ios, react-native-image-crop-picker gives really bad quality - // without specifying width and height. on android, however, the - // crop stretches incorrectly if you do specify it. these are - // both separate bugs in the library. we deal with that by - // providing width & height for ios only - // -prf - const {width, height} = this.getUploadDimensions({ - width: this.width, - height: this.height, - }) - - const cropped = await openCropper({ - mediaType: 'photo', - path: this.path, - freeStyleCropEnabled: true, - ...(isIOS ? {width, height} : {}), - }) - - runInAction(() => { - this.cropped = cropped - }) - } catch (err) { - logger.error('Failed to crop photo', {message: err}) - } - } - - // Web manipulation - async manipulate( - attributes: { - crop?: ActionCrop['crop'] - } & ImageManipulationAttributes, - ) { - let uploadWidth: number | undefined - let uploadHeight: number | undefined - - const {aspectRatio, crop, position, scale} = attributes - const modifiers = [] - - if (this.attributes.flipHorizontal) { - modifiers.push({flip: FlipType.Horizontal}) - } - - if (this.attributes.flipVertical) { - modifiers.push({flip: FlipType.Vertical}) - } - - if (this.attributes.rotate !== undefined) { - modifiers.push({rotate: this.attributes.rotate}) - } - - if (crop !== undefined) { - const croppedHeight = crop.height * this.height - const croppedWidth = crop.width * this.width - modifiers.push({ - crop: { - originX: crop.originX * this.width, - originY: crop.originY * this.height, - height: croppedHeight, - width: croppedWidth, - }, - }) - - const uploadDimensions = this.getUploadDimensions( - {width: croppedWidth, height: croppedHeight}, - POST_IMG_MAX, - aspectRatio, - ) - - uploadWidth = uploadDimensions.width - uploadHeight = uploadDimensions.height - } else { - const uploadDimensions = this.getUploadDimensions( - {width: this.width, height: this.height}, - POST_IMG_MAX, - aspectRatio, - ) - - uploadWidth = uploadDimensions.width - uploadHeight = uploadDimensions.height - } - - if (scale !== undefined) { - this.attributes.scale = scale - } - - if (position !== undefined) { - this.attributes.position = position - } - - if (aspectRatio !== undefined) { - this.attributes.aspectRatio = aspectRatio - } - - const ratioMultiplier = - this.ratioMultipliers[this.attributes.aspectRatio ?? '1:1'] - - const result = await ImageManipulator.manipulateAsync( - this.path, - [ - ...modifiers, - { - resize: - ratioMultiplier > 1 ? {width: uploadWidth} : {height: uploadHeight}, - }, - ], - { - base64: true, - format: SaveFormat.JPEG, - }, - ) - - runInAction(() => { - this.cropped = { - mime: 'image/jpeg', - path: result.uri, - size: - result.base64 !== undefined - ? getDataUriSize(result.base64) - : MAX_IMAGE_SIZE_IN_BYTES + 999, // shouldn't hit this unless manipulation fails - ...result, - } - }) - } - - resetCropped() { - this.manipulate({}) - } - - previous() { - this.cropped = this.prev - this.attributes = this.prevAttributes - } -} |