From 5902528bae21b560b6be4879e5e87ed36ce099b6 Mon Sep 17 00:00:00 2001 From: zotlabs Date: Tue, 23 Jan 2018 16:42:24 -0800 Subject: undo and redo adding new cropper library as it had a .git config from the original project --- library/cropperjs/src/css/cropper.css | 290 ++++++++++ library/cropperjs/src/images/bg.png | Bin 0 -> 168 bytes library/cropperjs/src/js/change.js | 471 ++++++++++++++++ library/cropperjs/src/js/constants.js | 56 ++ library/cropperjs/src/js/cropper.js | 421 +++++++++++++++ library/cropperjs/src/js/defaults.js | 99 ++++ library/cropperjs/src/js/events.js | 111 ++++ library/cropperjs/src/js/handlers.js | 212 ++++++++ library/cropperjs/src/js/methods.js | 842 +++++++++++++++++++++++++++++ library/cropperjs/src/js/preview.js | 142 +++++ library/cropperjs/src/js/render.js | 495 +++++++++++++++++ library/cropperjs/src/js/template.js | 27 + library/cropperjs/src/js/utilities.js | 985 ++++++++++++++++++++++++++++++++++ 13 files changed, 4151 insertions(+) create mode 100644 library/cropperjs/src/css/cropper.css create mode 100644 library/cropperjs/src/images/bg.png create mode 100644 library/cropperjs/src/js/change.js create mode 100644 library/cropperjs/src/js/constants.js create mode 100644 library/cropperjs/src/js/cropper.js create mode 100644 library/cropperjs/src/js/defaults.js create mode 100644 library/cropperjs/src/js/events.js create mode 100644 library/cropperjs/src/js/handlers.js create mode 100644 library/cropperjs/src/js/methods.js create mode 100644 library/cropperjs/src/js/preview.js create mode 100644 library/cropperjs/src/js/render.js create mode 100644 library/cropperjs/src/js/template.js create mode 100644 library/cropperjs/src/js/utilities.js (limited to 'library/cropperjs/src') diff --git a/library/cropperjs/src/css/cropper.css b/library/cropperjs/src/css/cropper.css new file mode 100644 index 000000000..d09c4f182 --- /dev/null +++ b/library/cropperjs/src/css/cropper.css @@ -0,0 +1,290 @@ +:root { + --blue: #39f; +} + +.cropper-container { + direction: ltr; + font-size: 0; + line-height: 0; + position: relative; + touch-action: none; + user-select: none; + + & img { + /* Avoid margin top issue (Occur only when margin-top <= -height) */ + display: block; + height: 100%; + image-orientation: 0deg; + max-height: none !important; + max-width: none !important; + min-height: 0 !important; + min-width: 0 !important; + width: 100%; + } +} + +.cropper-wrap-box, +.cropper-canvas, +.cropper-drag-box, +.cropper-crop-box, +.cropper-modal { + bottom: 0; + left: 0; + position: absolute; + right: 0; + top: 0; +} + +.cropper-wrap-box, +.cropper-canvas { + overflow: hidden; +} + +.cropper-drag-box { + background-color: #fff; + opacity: 0; +} + +.cropper-modal { + background-color: #000; + opacity: .5; +} + +.cropper-view-box { + display: block; + height: 100%; + outline-color: color(var(--blue) alpha(75%)); + outline: 1px solid var(--blue); + overflow: hidden; + width: 100%; +} + +.cropper-dashed { + border: 0 dashed #eee; + display: block; + opacity: .5; + position: absolute; + + &.dashed-h { + border-bottom-width: 1px; + border-top-width: 1px; + height: calc(100 / 3)%; + left: 0; + top: calc(100 / 3)%; + width: 100%; + } + + &.dashed-v { + border-left-width: 1px; + border-right-width: 1px; + height: 100%; + left: calc(100 / 3)%; + top: 0; + width: calc(100 / 3)%; + } +} + +.cropper-center { + display: block; + height: 0; + left: 50%; + opacity: .75; + position: absolute; + top: 50%; + width: 0; + + &:before, + &:after { + background-color: #eee; + content: ' '; + display: block; + position: absolute; + } + + &:before { + height: 1px; + left: -3px; + top: 0; + width: 7px; + } + + &:after { + height: 7px; + left: 0; + top: -3px; + width: 1px; + } +} + +.cropper-face, +.cropper-line, +.cropper-point { + display: block; + height: 100%; + opacity: .1; + position: absolute; + width: 100%; +} + +.cropper-face { + background-color: #fff; + left: 0; + top: 0; +} + +.cropper-line { + background-color: var(--blue); + + &.line-e { + cursor: ew-resize; + right: -3px; + top: 0; + width: 5px; + } + + &.line-n { + cursor: ns-resize; + height: 5px; + left: 0; + top: -3px; + } + + &.line-w { + cursor: ew-resize; + left: -3px; + top: 0; + width: 5px; + } + + &.line-s { + bottom: -3px; + cursor: ns-resize; + height: 5px; + left: 0; + } +} + +.cropper-point { + background-color: var(--blue); + height: 5px; + opacity: .75; + width: 5px; + + &.point-e { + cursor: ew-resize; + margin-top: -3px; + right: -3px; + top: 50%; + } + + &.point-n { + cursor: ns-resize; + left: 50%; + margin-left: -3px; + top: -3px; + } + + &.point-w { + cursor: ew-resize; + left: -3px; + margin-top: -3px; + top: 50%; + } + + &.point-s { + bottom: -3px; + cursor: s-resize; + left: 50%; + margin-left: -3px; + } + + &.point-ne { + cursor: nesw-resize; + right: -3px; + top: -3px; + } + + &.point-nw { + cursor: nwse-resize; + left: -3px; + top: -3px; + } + + &.point-sw { + bottom: -3px; + cursor: nesw-resize; + left: -3px; + } + + &.point-se { + bottom: -3px; + cursor: nwse-resize; + height: 20px; + opacity: 1; + right: -3px; + width: 20px; + + @media (min-width: 768px) { + height: 15px; + width: 15px; + } + + @media (min-width: 992px) { + height: 10px; + width: 10px; + } + + @media (min-width: 1200px) { + height: 5px; + opacity: .75; + width: 5px; + } + } + + &.point-se:before { + background-color: var(--blue); + bottom: -50%; + content: ' '; + display: block; + height: 200%; + opacity: 0; + position: absolute; + right: -50%; + width: 200%; + } +} + +.cropper-invisible { + opacity: 0; +} + +.cropper-bg { + background-image: url('../images/bg.png'); +} + +.cropper-hide { + display: block; + height: 0; + position: absolute; + width: 0; +} + +.cropper-hidden { + display: none !important; +} + +.cropper-move { + cursor: move; +} + +.cropper-crop { + cursor: crosshair; +} + +.cropper-disabled .cropper-drag-box, +.cropper-disabled .cropper-face, +.cropper-disabled .cropper-line, +.cropper-disabled .cropper-point { + cursor: not-allowed; +} + diff --git a/library/cropperjs/src/images/bg.png b/library/cropperjs/src/images/bg.png new file mode 100644 index 000000000..3c7056b19 Binary files /dev/null and b/library/cropperjs/src/images/bg.png differ diff --git a/library/cropperjs/src/js/change.js b/library/cropperjs/src/js/change.js new file mode 100644 index 000000000..014222ef0 --- /dev/null +++ b/library/cropperjs/src/js/change.js @@ -0,0 +1,471 @@ +import { + ACTION_ALL, + ACTION_CROP, + ACTION_EAST, + ACTION_MOVE, + ACTION_NORTH, + ACTION_NORTH_EAST, + ACTION_NORTH_WEST, + ACTION_SOUTH, + ACTION_SOUTH_EAST, + ACTION_SOUTH_WEST, + ACTION_WEST, + ACTION_ZOOM, + CLASS_HIDDEN, +} from './constants'; +import { + each, + getMaxZoomRatio, + getOffset, + removeClass, +} from './utilities'; + +export default { + change(e) { + const { + options, + canvasData, + containerData, + cropBoxData, + pointers, + } = this; + let { action } = this; + let { aspectRatio } = options; + let { + left, + top, + width, + height, + } = cropBoxData; + const right = left + width; + const bottom = top + height; + let minLeft = 0; + let minTop = 0; + let maxWidth = containerData.width; + let maxHeight = containerData.height; + let renderable = true; + let offset; + + // Locking aspect ratio in "free mode" by holding shift key + if (!aspectRatio && e.shiftKey) { + aspectRatio = width && height ? width / height : 1; + } + + if (this.limited) { + ({ minLeft, minTop } = cropBoxData); + maxWidth = minLeft + Math.min( + containerData.width, + canvasData.width, + canvasData.left + canvasData.width, + ); + maxHeight = minTop + Math.min( + containerData.height, + canvasData.height, + canvasData.top + canvasData.height, + ); + } + + const pointer = pointers[Object.keys(pointers)[0]]; + const range = { + x: pointer.endX - pointer.startX, + y: pointer.endY - pointer.startY, + }; + const check = (side) => { + switch (side) { + case ACTION_EAST: + if (right + range.x > maxWidth) { + range.x = maxWidth - right; + } + + break; + + case ACTION_WEST: + if (left + range.x < minLeft) { + range.x = minLeft - left; + } + + break; + + case ACTION_NORTH: + if (top + range.y < minTop) { + range.y = minTop - top; + } + + break; + + case ACTION_SOUTH: + if (bottom + range.y > maxHeight) { + range.y = maxHeight - bottom; + } + + break; + + default: + } + }; + + switch (action) { + // Move crop box + case ACTION_ALL: + left += range.x; + top += range.y; + break; + + // Resize crop box + case ACTION_EAST: + if (range.x >= 0 && (right >= maxWidth || (aspectRatio && + (top <= minTop || bottom >= maxHeight)))) { + renderable = false; + break; + } + + check(ACTION_EAST); + width += range.x; + + if (aspectRatio) { + height = width / aspectRatio; + top -= (range.x / aspectRatio) / 2; + } + + if (width < 0) { + action = ACTION_WEST; + width = 0; + } + + break; + + case ACTION_NORTH: + if (range.y <= 0 && (top <= minTop || (aspectRatio && + (left <= minLeft || right >= maxWidth)))) { + renderable = false; + break; + } + + check(ACTION_NORTH); + height -= range.y; + top += range.y; + + if (aspectRatio) { + width = height * aspectRatio; + left += (range.y * aspectRatio) / 2; + } + + if (height < 0) { + action = ACTION_SOUTH; + height = 0; + } + + break; + + case ACTION_WEST: + if (range.x <= 0 && (left <= minLeft || (aspectRatio && + (top <= minTop || bottom >= maxHeight)))) { + renderable = false; + break; + } + + check(ACTION_WEST); + width -= range.x; + left += range.x; + + if (aspectRatio) { + height = width / aspectRatio; + top += (range.x / aspectRatio) / 2; + } + + if (width < 0) { + action = ACTION_EAST; + width = 0; + } + + break; + + case ACTION_SOUTH: + if (range.y >= 0 && (bottom >= maxHeight || (aspectRatio && + (left <= minLeft || right >= maxWidth)))) { + renderable = false; + break; + } + + check(ACTION_SOUTH); + height += range.y; + + if (aspectRatio) { + width = height * aspectRatio; + left -= (range.y * aspectRatio) / 2; + } + + if (height < 0) { + action = ACTION_NORTH; + height = 0; + } + + break; + + case ACTION_NORTH_EAST: + if (aspectRatio) { + if (range.y <= 0 && (top <= minTop || right >= maxWidth)) { + renderable = false; + break; + } + + check(ACTION_NORTH); + height -= range.y; + top += range.y; + width = height * aspectRatio; + } else { + check(ACTION_NORTH); + check(ACTION_EAST); + + if (range.x >= 0) { + if (right < maxWidth) { + width += range.x; + } else if (range.y <= 0 && top <= minTop) { + renderable = false; + } + } else { + width += range.x; + } + + if (range.y <= 0) { + if (top > minTop) { + height -= range.y; + top += range.y; + } + } else { + height -= range.y; + top += range.y; + } + } + + if (width < 0 && height < 0) { + action = ACTION_SOUTH_WEST; + height = 0; + width = 0; + } else if (width < 0) { + action = ACTION_NORTH_WEST; + width = 0; + } else if (height < 0) { + action = ACTION_SOUTH_EAST; + height = 0; + } + + break; + + case ACTION_NORTH_WEST: + if (aspectRatio) { + if (range.y <= 0 && (top <= minTop || left <= minLeft)) { + renderable = false; + break; + } + + check(ACTION_NORTH); + height -= range.y; + top += range.y; + width = height * aspectRatio; + left += range.y * aspectRatio; + } else { + check(ACTION_NORTH); + check(ACTION_WEST); + + if (range.x <= 0) { + if (left > minLeft) { + width -= range.x; + left += range.x; + } else if (range.y <= 0 && top <= minTop) { + renderable = false; + } + } else { + width -= range.x; + left += range.x; + } + + if (range.y <= 0) { + if (top > minTop) { + height -= range.y; + top += range.y; + } + } else { + height -= range.y; + top += range.y; + } + } + + if (width < 0 && height < 0) { + action = ACTION_SOUTH_EAST; + height = 0; + width = 0; + } else if (width < 0) { + action = ACTION_NORTH_EAST; + width = 0; + } else if (height < 0) { + action = ACTION_SOUTH_WEST; + height = 0; + } + + break; + + case ACTION_SOUTH_WEST: + if (aspectRatio) { + if (range.x <= 0 && (left <= minLeft || bottom >= maxHeight)) { + renderable = false; + break; + } + + check(ACTION_WEST); + width -= range.x; + left += range.x; + height = width / aspectRatio; + } else { + check(ACTION_SOUTH); + check(ACTION_WEST); + + if (range.x <= 0) { + if (left > minLeft) { + width -= range.x; + left += range.x; + } else if (range.y >= 0 && bottom >= maxHeight) { + renderable = false; + } + } else { + width -= range.x; + left += range.x; + } + + if (range.y >= 0) { + if (bottom < maxHeight) { + height += range.y; + } + } else { + height += range.y; + } + } + + if (width < 0 && height < 0) { + action = ACTION_NORTH_EAST; + height = 0; + width = 0; + } else if (width < 0) { + action = ACTION_SOUTH_EAST; + width = 0; + } else if (height < 0) { + action = ACTION_NORTH_WEST; + height = 0; + } + + break; + + case ACTION_SOUTH_EAST: + if (aspectRatio) { + if (range.x >= 0 && (right >= maxWidth || bottom >= maxHeight)) { + renderable = false; + break; + } + + check(ACTION_EAST); + width += range.x; + height = width / aspectRatio; + } else { + check(ACTION_SOUTH); + check(ACTION_EAST); + + if (range.x >= 0) { + if (right < maxWidth) { + width += range.x; + } else if (range.y >= 0 && bottom >= maxHeight) { + renderable = false; + } + } else { + width += range.x; + } + + if (range.y >= 0) { + if (bottom < maxHeight) { + height += range.y; + } + } else { + height += range.y; + } + } + + if (width < 0 && height < 0) { + action = ACTION_NORTH_WEST; + height = 0; + width = 0; + } else if (width < 0) { + action = ACTION_SOUTH_WEST; + width = 0; + } else if (height < 0) { + action = ACTION_NORTH_EAST; + height = 0; + } + + break; + + // Move canvas + case ACTION_MOVE: + this.move(range.x, range.y); + renderable = false; + break; + + // Zoom canvas + case ACTION_ZOOM: + this.zoom(getMaxZoomRatio(pointers), e); + renderable = false; + break; + + // Create crop box + case ACTION_CROP: + if (!range.x || !range.y) { + renderable = false; + break; + } + + offset = getOffset(this.cropper); + left = pointer.startX - offset.left; + top = pointer.startY - offset.top; + width = cropBoxData.minWidth; + height = cropBoxData.minHeight; + + if (range.x > 0) { + action = range.y > 0 ? ACTION_SOUTH_EAST : ACTION_NORTH_EAST; + } else if (range.x < 0) { + left -= width; + action = range.y > 0 ? ACTION_SOUTH_WEST : ACTION_NORTH_WEST; + } + + if (range.y < 0) { + top -= height; + } + + // Show the crop box if is hidden + if (!this.cropped) { + removeClass(this.cropBox, CLASS_HIDDEN); + this.cropped = true; + + if (this.limited) { + this.limitCropBox(true, true); + } + } + + break; + + default: + } + + if (renderable) { + cropBoxData.width = width; + cropBoxData.height = height; + cropBoxData.left = left; + cropBoxData.top = top; + this.action = action; + this.renderCropBox(); + } + + // Override + each(pointers, (p) => { + p.startX = p.endX; + p.startY = p.endY; + }); + }, +}; diff --git a/library/cropperjs/src/js/constants.js b/library/cropperjs/src/js/constants.js new file mode 100644 index 000000000..c675d4d1c --- /dev/null +++ b/library/cropperjs/src/js/constants.js @@ -0,0 +1,56 @@ +export const WINDOW = typeof window !== 'undefined' ? window : {}; +export const NAMESPACE = 'cropper'; + +// Actions +export const ACTION_ALL = 'all'; +export const ACTION_CROP = 'crop'; +export const ACTION_MOVE = 'move'; +export const ACTION_ZOOM = 'zoom'; +export const ACTION_EAST = 'e'; +export const ACTION_WEST = 'w'; +export const ACTION_SOUTH = 's'; +export const ACTION_NORTH = 'n'; +export const ACTION_NORTH_EAST = 'ne'; +export const ACTION_NORTH_WEST = 'nw'; +export const ACTION_SOUTH_EAST = 'se'; +export const ACTION_SOUTH_WEST = 'sw'; + +// Classes +export const CLASS_CROP = `${NAMESPACE}-crop`; +export const CLASS_DISABLED = `${NAMESPACE}-disabled`; +export const CLASS_HIDDEN = `${NAMESPACE}-hidden`; +export const CLASS_HIDE = `${NAMESPACE}-hide`; +export const CLASS_INVISIBLE = `${NAMESPACE}-invisible`; +export const CLASS_MODAL = `${NAMESPACE}-modal`; +export const CLASS_MOVE = `${NAMESPACE}-move`; + +// Data keys +export const DATA_ACTION = 'action'; +export const DATA_PREVIEW = 'preview'; + +// Drag modes +export const DRAG_MODE_CROP = 'crop'; +export const DRAG_MODE_MOVE = 'move'; +export const DRAG_MODE_NONE = 'none'; + +// Events +export const EVENT_CROP = 'crop'; +export const EVENT_CROP_END = 'cropend'; +export const EVENT_CROP_MOVE = 'cropmove'; +export const EVENT_CROP_START = 'cropstart'; +export const EVENT_DBLCLICK = 'dblclick'; +export const EVENT_ERROR = 'error'; +export const EVENT_LOAD = 'load'; +export const EVENT_POINTER_DOWN = WINDOW.PointerEvent ? 'pointerdown' : 'touchstart mousedown'; +export const EVENT_POINTER_MOVE = WINDOW.PointerEvent ? 'pointermove' : 'touchmove mousemove'; +export const EVENT_POINTER_UP = WINDOW.PointerEvent ? 'pointerup pointercancel' : 'touchend touchcancel mouseup'; +export const EVENT_READY = 'ready'; +export const EVENT_RESIZE = 'resize'; +export const EVENT_WHEEL = 'wheel mousewheel DOMMouseScroll'; +export const EVENT_ZOOM = 'zoom'; + +// RegExps +export const REGEXP_ACTIONS = /^(?:e|w|s|n|se|sw|ne|nw|all|crop|move|zoom)$/; +export const REGEXP_DATA_URL = /^data:/; +export const REGEXP_DATA_URL_JPEG = /^data:image\/jpeg;base64,/; +export const REGEXP_TAG_NAME = /^(?:img|canvas)$/i; diff --git a/library/cropperjs/src/js/cropper.js b/library/cropperjs/src/js/cropper.js new file mode 100644 index 000000000..97f3511df --- /dev/null +++ b/library/cropperjs/src/js/cropper.js @@ -0,0 +1,421 @@ +import DEFAULTS from './defaults'; +import TEMPLATE from './template'; +import render from './render'; +import preview from './preview'; +import events from './events'; +import handlers from './handlers'; +import change from './change'; +import methods from './methods'; +import { + ACTION_ALL, + CLASS_HIDDEN, + CLASS_HIDE, + CLASS_INVISIBLE, + CLASS_MODAL, + CLASS_MOVE, + DATA_ACTION, + EVENT_CROP, + EVENT_ERROR, + EVENT_LOAD, + EVENT_READY, + NAMESPACE, + REGEXP_DATA_URL, + REGEXP_DATA_URL_JPEG, + REGEXP_TAG_NAME, + WINDOW, +} from './constants'; +import { + addClass, + addListener, + addTimestamp, + arrayBufferToDataURL, + dataURLToArrayBuffer, + dispatchEvent, + extend, + getData, + getImageNaturalSizes, + getOrientation, + isCrossOriginURL, + isFunction, + isPlainObject, + parseOrientation, + proxy, + removeClass, + removeListener, + setData, +} from './utilities'; + +const AnotherCropper = WINDOW.Cropper; + +class Cropper { + /** + * Create a new Cropper. + * @param {Element} element - The target element for cropping. + * @param {Object} [options={}] - The configuration options. + */ + constructor(element, options = {}) { + if (!element || !REGEXP_TAG_NAME.test(element.tagName)) { + throw new Error('The first argument is required and must be an or element.'); + } + + this.element = element; + this.options = extend({}, DEFAULTS, isPlainObject(options) && options); + this.complete = false; + this.cropped = false; + this.disabled = false; + this.isImg = false; + this.limited = false; + this.loaded = false; + this.ready = false; + this.replaced = false; + this.wheeling = false; + this.originalUrl = ''; + this.canvasData = null; + this.cropBoxData = null; + this.previews = null; + this.pointers = {}; + this.init(); + } + + init() { + const { element } = this; + const tagName = element.tagName.toLowerCase(); + let url; + + if (getData(element, NAMESPACE)) { + return; + } + + setData(element, NAMESPACE, this); + + if (tagName === 'img') { + this.isImg = true; + + // e.g.: "img/picture.jpg" + url = element.getAttribute('src') || ''; + this.originalUrl = url; + + // Stop when it's a blank image + if (!url) { + return; + } + + // e.g.: "http://example.com/img/picture.jpg" + url = element.src; + } else if (tagName === 'canvas' && window.HTMLCanvasElement) { + url = element.toDataURL(); + } + + this.load(url); + } + + load(url) { + if (!url) { + return; + } + + this.url = url; + this.imageData = {}; + + const { element, options } = this; + + if (!options.checkOrientation || !window.ArrayBuffer) { + this.clone(); + return; + } + + // XMLHttpRequest disallows to open a Data URL in some browsers like IE11 and Safari + if (REGEXP_DATA_URL.test(url)) { + if (REGEXP_DATA_URL_JPEG.test(url)) { + this.read(dataURLToArrayBuffer(url)); + } else { + this.clone(); + } + + return; + } + + const xhr = new XMLHttpRequest(); + + xhr.onerror = () => { + this.clone(); + }; + + xhr.onload = () => { + this.read(xhr.response); + }; + + // Bust cache when there is a "crossOrigin" property + if (options.checkCrossOrigin && isCrossOriginURL(url) && element.crossOrigin) { + url = addTimestamp(url); + } + + xhr.open('get', url); + xhr.responseType = 'arraybuffer'; + xhr.withCredentials = element.crossOrigin === 'use-credentials'; + xhr.send(); + } + + read(arrayBuffer) { + const { options, imageData } = this; + const orientation = getOrientation(arrayBuffer); + let rotate = 0; + let scaleX = 1; + let scaleY = 1; + + if (orientation > 1) { + this.url = arrayBufferToDataURL(arrayBuffer, 'image/jpeg'); + ({ rotate, scaleX, scaleY } = parseOrientation(orientation)); + } + + if (options.rotatable) { + imageData.rotate = rotate; + } + + if (options.scalable) { + imageData.scaleX = scaleX; + imageData.scaleY = scaleY; + } + + this.clone(); + } + + clone() { + const { element, url } = this; + let crossOrigin; + let crossOriginUrl; + + if (this.options.checkCrossOrigin && isCrossOriginURL(url)) { + ({ crossOrigin } = element); + + if (crossOrigin) { + crossOriginUrl = url; + } else { + crossOrigin = 'anonymous'; + + // Bust cache when there is not a "crossOrigin" property + crossOriginUrl = addTimestamp(url); + } + } + + this.crossOrigin = crossOrigin; + this.crossOriginUrl = crossOriginUrl; + + const image = document.createElement('img'); + + if (crossOrigin) { + image.crossOrigin = crossOrigin; + } + + image.src = crossOriginUrl || url; + + const start = proxy(this.start, this); + const stop = proxy(this.stop, this); + + this.image = image; + this.onStart = start; + this.onStop = stop; + + if (this.isImg) { + if (element.complete) { + this.start(); + } else { + addListener(element, EVENT_LOAD, start); + } + } else { + addListener(image, EVENT_LOAD, start); + addListener(image, EVENT_ERROR, stop); + addClass(image, CLASS_HIDE); + element.parentNode.insertBefore(image, element.nextSibling); + } + } + + start(event) { + const image = this.isImg ? this.element : this.image; + + if (event) { + removeListener(image, EVENT_LOAD, this.onStart); + removeListener(image, EVENT_ERROR, this.onStop); + } + + getImageNaturalSizes(image, (naturalWidth, naturalHeight) => { + extend(this.imageData, { + naturalWidth, + naturalHeight, + aspectRatio: naturalWidth / naturalHeight, + }); + this.loaded = true; + this.build(); + }); + } + + stop() { + const { image } = this; + + removeListener(image, EVENT_LOAD, this.onStart); + removeListener(image, EVENT_ERROR, this.onStop); + image.parentNode.removeChild(image); + this.image = null; + } + + build() { + if (!this.loaded) { + return; + } + + // Unbuild first when replace + if (this.ready) { + this.unbuild(); + } + + const { element, options, image } = this; + + // Create cropper elements + const container = element.parentNode; + const template = document.createElement('div'); + + template.innerHTML = TEMPLATE; + + const cropper = template.querySelector(`.${NAMESPACE}-container`); + const canvas = cropper.querySelector(`.${NAMESPACE}-canvas`); + const dragBox = cropper.querySelector(`.${NAMESPACE}-drag-box`); + const cropBox = cropper.querySelector(`.${NAMESPACE}-crop-box`); + const face = cropBox.querySelector(`.${NAMESPACE}-face`); + + this.container = container; + this.cropper = cropper; + this.canvas = canvas; + this.dragBox = dragBox; + this.cropBox = cropBox; + this.viewBox = cropper.querySelector(`.${NAMESPACE}-view-box`); + this.face = face; + + canvas.appendChild(image); + + // Hide the original image + addClass(element, CLASS_HIDDEN); + + // Inserts the cropper after to the current image + container.insertBefore(cropper, element.nextSibling); + + // Show the image if is hidden + if (!this.isImg) { + removeClass(image, CLASS_HIDE); + } + + this.initPreview(); + this.bind(); + + options.aspectRatio = Math.max(0, options.aspectRatio) || NaN; + options.viewMode = Math.max(0, Math.min(3, Math.round(options.viewMode))) || 0; + + this.cropped = options.autoCrop; + + if (options.autoCrop) { + if (options.modal) { + addClass(dragBox, CLASS_MODAL); + } + } else { + addClass(cropBox, CLASS_HIDDEN); + } + + if (!options.guides) { + addClass(cropBox.getElementsByClassName(`${NAMESPACE}-dashed`), CLASS_HIDDEN); + } + + if (!options.center) { + addClass(cropBox.getElementsByClassName(`${NAMESPACE}-center`), CLASS_HIDDEN); + } + + if (options.background) { + addClass(cropper, `${NAMESPACE}-bg`); + } + + if (!options.highlight) { + addClass(face, CLASS_INVISIBLE); + } + + if (options.cropBoxMovable) { + addClass(face, CLASS_MOVE); + setData(face, DATA_ACTION, ACTION_ALL); + } + + if (!options.cropBoxResizable) { + addClass(cropBox.getElementsByClassName(`${NAMESPACE}-line`), CLASS_HIDDEN); + addClass(cropBox.getElementsByClassName(`${NAMESPACE}-point`), CLASS_HIDDEN); + } + + this.setDragMode(options.dragMode); + this.render(); + this.ready = true; + this.setData(options.data); + + // Call the "ready" option asynchronously to keep "image.cropper" is defined + this.completing = setTimeout(() => { + if (isFunction(options.ready)) { + addListener(element, EVENT_READY, options.ready, { + once: true, + }); + } + + dispatchEvent(element, EVENT_READY); + dispatchEvent(element, EVENT_CROP, this.getData()); + + this.complete = true; + }, 0); + } + + unbuild() { + if (!this.ready) { + return; + } + + if (!this.complete) { + clearTimeout(this.completing); + } + + this.ready = false; + this.complete = false; + this.initialImageData = null; + + // Clear `initialCanvasData` is necessary when replace + this.initialCanvasData = null; + this.initialCropBoxData = null; + this.containerData = null; + this.canvasData = null; + + // Clear `cropBoxData` is necessary when replace + this.cropBoxData = null; + this.unbind(); + this.resetPreview(); + this.previews = null; + this.viewBox = null; + this.cropBox = null; + this.dragBox = null; + this.canvas = null; + this.container = null; + this.cropper.parentNode.removeChild(this.cropper); + this.cropper = null; + } + + /** + * Get the no conflict cropper class. + * @returns {Cropper} The cropper class. + */ + static noConflict() { + window.Cropper = AnotherCropper; + return Cropper; + } + + /** + * Change the default options. + * @param {Object} options - The new default options. + */ + static setDefaults(options) { + extend(DEFAULTS, isPlainObject(options) && options); + } +} + +extend(Cropper.prototype, render, preview, events, handlers, change, methods); + +export default Cropper; diff --git a/library/cropperjs/src/js/defaults.js b/library/cropperjs/src/js/defaults.js new file mode 100644 index 000000000..aa469e73a --- /dev/null +++ b/library/cropperjs/src/js/defaults.js @@ -0,0 +1,99 @@ +import { + DRAG_MODE_CROP, +} from './constants'; + +export default { + // Define the view mode of the cropper + viewMode: 0, // 0, 1, 2, 3 + + // Define the dragging mode of the cropper + dragMode: DRAG_MODE_CROP, // 'crop', 'move' or 'none' + + // Define the aspect ratio of the crop box + aspectRatio: NaN, + + // An object with the previous cropping result data + data: null, + + // A selector for adding extra containers to preview + preview: '', + + // Re-render the cropper when resize the window + responsive: true, + + // Restore the cropped area after resize the window + restore: true, + + // Check if the current image is a cross-origin image + checkCrossOrigin: true, + + // Check the current image's Exif Orientation information + checkOrientation: true, + + // Show the black modal + modal: true, + + // Show the dashed lines for guiding + guides: true, + + // Show the center indicator for guiding + center: true, + + // Show the white modal to highlight the crop box + highlight: true, + + // Show the grid background + background: true, + + // Enable to crop the image automatically when initialize + autoCrop: true, + + // Define the percentage of automatic cropping area when initializes + autoCropArea: 0.8, + + // Enable to move the image + movable: true, + + // Enable to rotate the image + rotatable: true, + + // Enable to scale the image + scalable: true, + + // Enable to zoom the image + zoomable: true, + + // Enable to zoom the image by dragging touch + zoomOnTouch: true, + + // Enable to zoom the image by wheeling mouse + zoomOnWheel: true, + + // Define zoom ratio when zoom the image by wheeling mouse + wheelZoomRatio: 0.1, + + // Enable to move the crop box + cropBoxMovable: true, + + // Enable to resize the crop box + cropBoxResizable: true, + + // Toggle drag mode between "crop" and "move" when click twice on the cropper + toggleDragModeOnDblclick: true, + + // Size limitation + minCanvasWidth: 0, + minCanvasHeight: 0, + minCropBoxWidth: 0, + minCropBoxHeight: 0, + minContainerWidth: 200, + minContainerHeight: 100, + + // Shortcuts of events + ready: null, + cropstart: null, + cropmove: null, + cropend: null, + crop: null, + zoom: null, +}; diff --git a/library/cropperjs/src/js/events.js b/library/cropperjs/src/js/events.js new file mode 100644 index 000000000..3753db022 --- /dev/null +++ b/library/cropperjs/src/js/events.js @@ -0,0 +1,111 @@ +import { + EVENT_CROP, + EVENT_CROP_END, + EVENT_CROP_MOVE, + EVENT_CROP_START, + EVENT_DBLCLICK, + EVENT_POINTER_DOWN, + EVENT_POINTER_MOVE, + EVENT_POINTER_UP, + EVENT_RESIZE, + EVENT_WHEEL, + EVENT_ZOOM, +} from './constants'; +import { + addListener, + isFunction, + proxy, + removeListener, +} from './utilities'; + +export default { + bind() { + const { element, options, cropper } = this; + + if (isFunction(options.cropstart)) { + addListener(element, EVENT_CROP_START, options.cropstart); + } + + if (isFunction(options.cropmove)) { + addListener(element, EVENT_CROP_MOVE, options.cropmove); + } + + if (isFunction(options.cropend)) { + addListener(element, EVENT_CROP_END, options.cropend); + } + + if (isFunction(options.crop)) { + addListener(element, EVENT_CROP, options.crop); + } + + if (isFunction(options.zoom)) { + addListener(element, EVENT_ZOOM, options.zoom); + } + + addListener(cropper, EVENT_POINTER_DOWN, (this.onCropStart = proxy(this.cropStart, this))); + + if (options.zoomable && options.zoomOnWheel) { + addListener(cropper, EVENT_WHEEL, (this.onWheel = proxy(this.wheel, this))); + } + + if (options.toggleDragModeOnDblclick) { + addListener(cropper, EVENT_DBLCLICK, (this.onDblclick = proxy(this.dblclick, this))); + } + + addListener( + element.ownerDocument, + EVENT_POINTER_MOVE, + (this.onCropMove = proxy(this.cropMove, this)), + ); + addListener( + element.ownerDocument, + EVENT_POINTER_UP, + (this.onCropEnd = proxy(this.cropEnd, this)), + ); + + if (options.responsive) { + addListener(window, EVENT_RESIZE, (this.onResize = proxy(this.resize, this))); + } + }, + + unbind() { + const { element, options, cropper } = this; + + if (isFunction(options.cropstart)) { + removeListener(element, EVENT_CROP_START, options.cropstart); + } + + if (isFunction(options.cropmove)) { + removeListener(element, EVENT_CROP_MOVE, options.cropmove); + } + + if (isFunction(options.cropend)) { + removeListener(element, EVENT_CROP_END, options.cropend); + } + + if (isFunction(options.crop)) { + removeListener(element, EVENT_CROP, options.crop); + } + + if (isFunction(options.zoom)) { + removeListener(element, EVENT_ZOOM, options.zoom); + } + + removeListener(cropper, EVENT_POINTER_DOWN, this.onCropStart); + + if (options.zoomable && options.zoomOnWheel) { + removeListener(cropper, EVENT_WHEEL, this.onWheel); + } + + if (options.toggleDragModeOnDblclick) { + removeListener(cropper, EVENT_DBLCLICK, this.onDblclick); + } + + removeListener(element.ownerDocument, EVENT_POINTER_MOVE, this.onCropMove); + removeListener(element.ownerDocument, EVENT_POINTER_UP, this.onCropEnd); + + if (options.responsive) { + removeListener(window, EVENT_RESIZE, this.onResize); + } + }, +}; diff --git a/library/cropperjs/src/js/handlers.js b/library/cropperjs/src/js/handlers.js new file mode 100644 index 000000000..7b7b2469a --- /dev/null +++ b/library/cropperjs/src/js/handlers.js @@ -0,0 +1,212 @@ +import { + ACTION_CROP, + ACTION_ZOOM, + CLASS_CROP, + CLASS_MODAL, + DATA_ACTION, + DRAG_MODE_CROP, + DRAG_MODE_MOVE, + DRAG_MODE_NONE, + EVENT_CROP_END, + EVENT_CROP_MOVE, + EVENT_CROP_START, + REGEXP_ACTIONS, +} from './constants'; +import { + addClass, + dispatchEvent, + each, + extend, + getData, + getPointer, + hasClass, + toggleClass, +} from './utilities'; + +export default { + resize() { + const { options, container, containerData } = this; + const minContainerWidth = Number(options.minContainerWidth) || 200; + const minContainerHeight = Number(options.minContainerHeight) || 100; + + if (this.disabled || containerData.width <= minContainerWidth || + containerData.height <= minContainerHeight) { + return; + } + + const ratio = container.offsetWidth / containerData.width; + + // Resize when width changed or height changed + if (ratio !== 1 || container.offsetHeight !== containerData.height) { + let canvasData; + let cropBoxData; + + if (options.restore) { + canvasData = this.getCanvasData(); + cropBoxData = this.getCropBoxData(); + } + + this.render(); + + if (options.restore) { + this.setCanvasData(each(canvasData, (n, i) => { + canvasData[i] = n * ratio; + })); + this.setCropBoxData(each(cropBoxData, (n, i) => { + cropBoxData[i] = n * ratio; + })); + } + } + }, + + dblclick() { + if (this.disabled || this.options.dragMode === DRAG_MODE_NONE) { + return; + } + + this.setDragMode(hasClass(this.dragBox, CLASS_CROP) ? DRAG_MODE_MOVE : DRAG_MODE_CROP); + }, + + wheel(e) { + const ratio = Number(this.options.wheelZoomRatio) || 0.1; + let delta = 1; + + if (this.disabled) { + return; + } + + e.preventDefault(); + + // Limit wheel speed to prevent zoom too fast (#21) + if (this.wheeling) { + return; + } + + this.wheeling = true; + + setTimeout(() => { + this.wheeling = false; + }, 50); + + if (e.deltaY) { + delta = e.deltaY > 0 ? 1 : -1; + } else if (e.wheelDelta) { + delta = -e.wheelDelta / 120; + } else if (e.detail) { + delta = e.detail > 0 ? 1 : -1; + } + + this.zoom(-delta * ratio, e); + }, + + cropStart(e) { + if (this.disabled) { + return; + } + + const { options, pointers } = this; + let action; + + if (e.changedTouches) { + // Handle touch event + each(e.changedTouches, (touch) => { + pointers[touch.identifier] = getPointer(touch); + }); + } else { + // Handle mouse event and pointer event + pointers[e.pointerId || 0] = getPointer(e); + } + + if (Object.keys(pointers).length > 1 && options.zoomable && options.zoomOnTouch) { + action = ACTION_ZOOM; + } else { + action = getData(e.target, DATA_ACTION); + } + + if (!REGEXP_ACTIONS.test(action)) { + return; + } + + if (dispatchEvent(this.element, EVENT_CROP_START, { + originalEvent: e, + action, + }) === false) { + return; + } + + e.preventDefault(); + + this.action = action; + this.cropping = false; + + if (action === ACTION_CROP) { + this.cropping = true; + addClass(this.dragBox, CLASS_MODAL); + } + }, + + cropMove(e) { + const { action } = this; + + if (this.disabled || !action) { + return; + } + + const { pointers } = this; + + e.preventDefault(); + + if (dispatchEvent(this.element, EVENT_CROP_MOVE, { + originalEvent: e, + action, + }) === false) { + return; + } + + if (e.changedTouches) { + each(e.changedTouches, (touch) => { + extend(pointers[touch.identifier], getPointer(touch, true)); + }); + } else { + extend(pointers[e.pointerId || 0], getPointer(e, true)); + } + + this.change(e); + }, + + cropEnd(e) { + if (this.disabled) { + return; + } + + const { action, pointers } = this; + + if (e.changedTouches) { + each(e.changedTouches, (touch) => { + delete pointers[touch.identifier]; + }); + } else { + delete pointers[e.pointerId || 0]; + } + + if (!action) { + return; + } + + e.preventDefault(); + + if (!Object.keys(pointers).length) { + this.action = ''; + } + + if (this.cropping) { + this.cropping = false; + toggleClass(this.dragBox, CLASS_MODAL, this.cropped && this.options.modal); + } + + dispatchEvent(this.element, EVENT_CROP_END, { + originalEvent: e, + action, + }); + }, +}; diff --git a/library/cropperjs/src/js/methods.js b/library/cropperjs/src/js/methods.js new file mode 100644 index 000000000..3627d2bd1 --- /dev/null +++ b/library/cropperjs/src/js/methods.js @@ -0,0 +1,842 @@ +import { + CLASS_CROP, + CLASS_DISABLED, + CLASS_HIDDEN, + CLASS_MODAL, + CLASS_MOVE, + DATA_ACTION, + DRAG_MODE_CROP, + DRAG_MODE_MOVE, + DRAG_MODE_NONE, + EVENT_LOAD, + EVENT_ZOOM, + NAMESPACE, +} from './constants'; +import { + addClass, + dispatchEvent, + each, + extend, + getAdjustedSizes, + getOffset, + getPointersCenter, + getSourceCanvas, + isFunction, + isNumber, + isPlainObject, + isUndefined, + normalizeDecimalNumber, + removeClass, + removeData, + removeListener, + setData, + toggleClass, +} from './utilities'; + +export default { + // Show the crop box manually + crop() { + if (this.ready && !this.disabled) { + if (!this.cropped) { + this.cropped = true; + this.limitCropBox(true, true); + + if (this.options.modal) { + addClass(this.dragBox, CLASS_MODAL); + } + + removeClass(this.cropBox, CLASS_HIDDEN); + } + + this.setCropBoxData(this.initialCropBoxData); + } + + return this; + }, + + // Reset the image and crop box to their initial states + reset() { + if (this.ready && !this.disabled) { + this.imageData = extend({}, this.initialImageData); + this.canvasData = extend({}, this.initialCanvasData); + this.cropBoxData = extend({}, this.initialCropBoxData); + this.renderCanvas(); + + if (this.cropped) { + this.renderCropBox(); + } + } + + return this; + }, + + // Clear the crop box + clear() { + if (this.cropped && !this.disabled) { + extend(this.cropBoxData, { + left: 0, + top: 0, + width: 0, + height: 0, + }); + + this.cropped = false; + this.renderCropBox(); + this.limitCanvas(true, true); + + // Render canvas after crop box rendered + this.renderCanvas(); + removeClass(this.dragBox, CLASS_MODAL); + addClass(this.cropBox, CLASS_HIDDEN); + } + + return this; + }, + + /** + * Replace the image's src and rebuild the cropper + * @param {string} url - The new URL. + * @param {boolean} [onlyColorChanged] - Indicate if the new image only changed color. + * @returns {Object} this + */ + replace(url, onlyColorChanged = false) { + if (!this.disabled && url) { + if (this.isImg) { + this.element.src = url; + } + + if (onlyColorChanged) { + this.url = url; + this.image.src = url; + + if (this.ready) { + this.image2.src = url; + + each(this.previews, (element) => { + element.getElementsByTagName('img')[0].src = url; + }); + } + } else { + if (this.isImg) { + this.replaced = true; + } + + // Clear previous data + this.options.data = null; + this.load(url); + } + } + + return this; + }, + + // Enable (unfreeze) the cropper + enable() { + if (this.ready) { + this.disabled = false; + removeClass(this.cropper, CLASS_DISABLED); + } + + return this; + }, + + // Disable (freeze) the cropper + disable() { + if (this.ready) { + this.disabled = true; + addClass(this.cropper, CLASS_DISABLED); + } + + return this; + }, + + // Destroy the cropper and remove the instance from the image + destroy() { + const { element, image } = this; + + if (this.loaded) { + if (this.isImg && this.replaced) { + element.src = this.originalUrl; + } + + this.unbuild(); + removeClass(element, CLASS_HIDDEN); + } else if (this.isImg) { + removeListener(element, EVENT_LOAD, this.onStart); + } else if (image) { + image.parentNode.removeChild(image); + } + + removeData(element, NAMESPACE); + + return this; + }, + + /** + * Move the canvas with relative offsets + * @param {number} offsetX - The relative offset distance on the x-axis. + * @param {number} offsetY - The relative offset distance on the y-axis. + * @returns {Object} this + */ + move(offsetX, offsetY) { + const { left, top } = this.canvasData; + + return this.moveTo( + isUndefined(offsetX) ? offsetX : (left + Number(offsetX)), + isUndefined(offsetY) ? offsetY : (top + Number(offsetY)), + ); + }, + + /** + * Move the canvas to an absolute point + * @param {number} x - The x-axis coordinate. + * @param {number} [y=x] - The y-axis coordinate. + * @returns {Object} this + */ + moveTo(x, y = x) { + const { canvasData } = this; + let changed = false; + + x = Number(x); + y = Number(y); + + if (this.ready && !this.disabled && this.options.movable) { + if (isNumber(x)) { + canvasData.left = x; + changed = true; + } + + if (isNumber(y)) { + canvasData.top = y; + changed = true; + } + + if (changed) { + this.renderCanvas(true); + } + } + + return this; + }, + + /** + * Zoom the canvas with a relative ratio + * @param {number} ratio - The target ratio. + * @param {Event} _originalEvent - The original event if any. + * @returns {Object} this + */ + zoom(ratio, _originalEvent) { + const { canvasData } = this; + + ratio = Number(ratio); + + if (ratio < 0) { + ratio = 1 / (1 - ratio); + } else { + ratio = 1 + ratio; + } + + return this.zoomTo((canvasData.width * ratio) / canvasData.naturalWidth, null, _originalEvent); + }, + + /** + * Zoom the canvas to an absolute ratio + * @param {number} ratio - The target ratio. + * @param {Object} pivot - The zoom pivot point coordinate. + * @param {Event} _originalEvent - The original event if any. + * @returns {Object} this + */ + zoomTo(ratio, pivot, _originalEvent) { + const { options, canvasData } = this; + const { + width, + height, + naturalWidth, + naturalHeight, + } = canvasData; + + ratio = Number(ratio); + + if (ratio >= 0 && this.ready && !this.disabled && options.zoomable) { + const newWidth = naturalWidth * ratio; + const newHeight = naturalHeight * ratio; + + if (dispatchEvent(this.element, EVENT_ZOOM, { + originalEvent: _originalEvent, + oldRatio: width / naturalWidth, + ratio: newWidth / naturalWidth, + }) === false) { + return this; + } + + if (_originalEvent) { + const { pointers } = this; + const offset = getOffset(this.cropper); + const center = pointers && Object.keys(pointers).length ? getPointersCenter(pointers) : { + pageX: _originalEvent.pageX, + pageY: _originalEvent.pageY, + }; + + // Zoom from the triggering point of the event + canvasData.left -= (newWidth - width) * ( + ((center.pageX - offset.left) - canvasData.left) / width + ); + canvasData.top -= (newHeight - height) * ( + ((center.pageY - offset.top) - canvasData.top) / height + ); + } else if (isPlainObject(pivot) && isNumber(pivot.x) && isNumber(pivot.y)) { + canvasData.left -= (newWidth - width) * ( + (pivot.x - canvasData.left) / width + ); + canvasData.top -= (newHeight - height) * ( + (pivot.y - canvasData.top) / height + ); + } else { + // Zoom from the center of the canvas + canvasData.left -= (newWidth - width) / 2; + canvasData.top -= (newHeight - height) / 2; + } + + canvasData.width = newWidth; + canvasData.height = newHeight; + this.renderCanvas(true); + } + + return this; + }, + + /** + * Rotate the canvas with a relative degree + * @param {number} degree - The rotate degree. + * @returns {Object} this + */ + rotate(degree) { + return this.rotateTo((this.imageData.rotate || 0) + Number(degree)); + }, + + /** + * Rotate the canvas to an absolute degree + * @param {number} degree - The rotate degree. + * @returns {Object} this + */ + rotateTo(degree) { + degree = Number(degree); + + if (isNumber(degree) && this.ready && !this.disabled && this.options.rotatable) { + this.imageData.rotate = degree % 360; + this.renderCanvas(true, true); + } + + return this; + }, + + /** + * Scale the image on the x-axis. + * @param {number} scaleX - The scale ratio on the x-axis. + * @returns {Object} this + */ + scaleX(scaleX) { + const { scaleY } = this.imageData; + + return this.scale(scaleX, isNumber(scaleY) ? scaleY : 1); + }, + + /** + * Scale the image on the y-axis. + * @param {number} scaleY - The scale ratio on the y-axis. + * @returns {Object} this + */ + scaleY(scaleY) { + const { scaleX } = this.imageData; + + return this.scale(isNumber(scaleX) ? scaleX : 1, scaleY); + }, + + /** + * Scale the image + * @param {number} scaleX - The scale ratio on the x-axis. + * @param {number} [scaleY=scaleX] - The scale ratio on the y-axis. + * @returns {Object} this + */ + scale(scaleX, scaleY = scaleX) { + const { imageData } = this; + let transformed = false; + + scaleX = Number(scaleX); + scaleY = Number(scaleY); + + if (this.ready && !this.disabled && this.options.scalable) { + if (isNumber(scaleX)) { + imageData.scaleX = scaleX; + transformed = true; + } + + if (isNumber(scaleY)) { + imageData.scaleY = scaleY; + transformed = true; + } + + if (transformed) { + this.renderCanvas(true, true); + } + } + + return this; + }, + + /** + * Get the cropped area position and size data (base on the original image) + * @param {boolean} [rounded=false] - Indicate if round the data values or not. + * @returns {Object} The result cropped data. + */ + getData(rounded = false) { + const { + options, + imageData, + canvasData, + cropBoxData, + } = this; + let data; + + if (this.ready && this.cropped) { + data = { + x: cropBoxData.left - canvasData.left, + y: cropBoxData.top - canvasData.top, + width: cropBoxData.width, + height: cropBoxData.height, + }; + + const ratio = imageData.width / imageData.naturalWidth; + + each(data, (n, i) => { + n /= ratio; + data[i] = rounded ? Math.round(n) : n; + }); + } else { + data = { + x: 0, + y: 0, + width: 0, + height: 0, + }; + } + + if (options.rotatable) { + data.rotate = imageData.rotate || 0; + } + + if (options.scalable) { + data.scaleX = imageData.scaleX || 1; + data.scaleY = imageData.scaleY || 1; + } + + return data; + }, + + /** + * Set the cropped area position and size with new data + * @param {Object} data - The new data. + * @returns {Object} this + */ + setData(data) { + const { options, imageData, canvasData } = this; + const cropBoxData = {}; + + if (isFunction(data)) { + data = data.call(this.element); + } + + if (this.ready && !this.disabled && isPlainObject(data)) { + let transformed = false; + + if (options.rotatable) { + if (isNumber(data.rotate) && data.rotate !== imageData.rotate) { + imageData.rotate = data.rotate; + transformed = true; + } + } + + if (options.scalable) { + if (isNumber(data.scaleX) && data.scaleX !== imageData.scaleX) { + imageData.scaleX = data.scaleX; + transformed = true; + } + + if (isNumber(data.scaleY) && data.scaleY !== imageData.scaleY) { + imageData.scaleY = data.scaleY; + transformed = true; + } + } + + if (transformed) { + this.renderCanvas(true, true); + } + + const ratio = imageData.width / imageData.naturalWidth; + + if (isNumber(data.x)) { + cropBoxData.left = (data.x * ratio) + canvasData.left; + } + + if (isNumber(data.y)) { + cropBoxData.top = (data.y * ratio) + canvasData.top; + } + + if (isNumber(data.width)) { + cropBoxData.width = data.width * ratio; + } + + if (isNumber(data.height)) { + cropBoxData.height = data.height * ratio; + } + + this.setCropBoxData(cropBoxData); + } + + return this; + }, + + /** + * Get the container size data. + * @returns {Object} The result container data. + */ + getContainerData() { + return this.ready ? extend({}, this.containerData) : {}; + }, + + /** + * Get the image position and size data. + * @returns {Object} The result image data. + */ + getImageData() { + return this.loaded ? extend({}, this.imageData) : {}; + }, + + /** + * Get the canvas position and size data. + * @returns {Object} The result canvas data. + */ + getCanvasData() { + const { canvasData } = this; + const data = {}; + + if (this.ready) { + each([ + 'left', + 'top', + 'width', + 'height', + 'naturalWidth', + 'naturalHeight', + ], (n) => { + data[n] = canvasData[n]; + }); + } + + return data; + }, + + /** + * Set the canvas position and size with new data. + * @param {Object} data - The new canvas data. + * @returns {Object} this + */ + setCanvasData(data) { + const { canvasData } = this; + const { aspectRatio } = canvasData; + + if (isFunction(data)) { + data = data.call(this.element); + } + + if (this.ready && !this.disabled && isPlainObject(data)) { + if (isNumber(data.left)) { + canvasData.left = data.left; + } + + if (isNumber(data.top)) { + canvasData.top = data.top; + } + + if (isNumber(data.width)) { + canvasData.width = data.width; + canvasData.height = data.width / aspectRatio; + } else if (isNumber(data.height)) { + canvasData.height = data.height; + canvasData.width = data.height * aspectRatio; + } + + this.renderCanvas(true); + } + + return this; + }, + + /** + * Get the crop box position and size data. + * @returns {Object} The result crop box data. + */ + getCropBoxData() { + const { cropBoxData } = this; + let data; + + if (this.ready && this.cropped) { + data = { + left: cropBoxData.left, + top: cropBoxData.top, + width: cropBoxData.width, + height: cropBoxData.height, + }; + } + + return data || {}; + }, + + /** + * Set the crop box position and size with new data. + * @param {Object} data - The new crop box data. + * @returns {Object} this + */ + setCropBoxData(data) { + const { cropBoxData } = this; + const { aspectRatio } = this.options; + let widthChanged; + let heightChanged; + + if (isFunction(data)) { + data = data.call(this.element); + } + + if (this.ready && this.cropped && !this.disabled && isPlainObject(data)) { + if (isNumber(data.left)) { + cropBoxData.left = data.left; + } + + if (isNumber(data.top)) { + cropBoxData.top = data.top; + } + + if (isNumber(data.width) && data.width !== cropBoxData.width) { + widthChanged = true; + cropBoxData.width = data.width; + } + + if (isNumber(data.height) && data.height !== cropBoxData.height) { + heightChanged = true; + cropBoxData.height = data.height; + } + + if (aspectRatio) { + if (widthChanged) { + cropBoxData.height = cropBoxData.width / aspectRatio; + } else if (heightChanged) { + cropBoxData.width = cropBoxData.height * aspectRatio; + } + } + + this.renderCropBox(); + } + + return this; + }, + + /** + * Get a canvas drawn the cropped image. + * @param {Object} [options={}] - The config options. + * @returns {HTMLCanvasElement} - The result canvas. + */ + getCroppedCanvas(options = {}) { + if (!this.ready || !window.HTMLCanvasElement) { + return null; + } + + const { canvasData } = this; + const source = getSourceCanvas(this.image, this.imageData, canvasData, options); + + // Returns the source canvas if it is not cropped. + if (!this.cropped) { + return source; + } + + let { + x: initialX, + y: initialY, + width: initialWidth, + height: initialHeight, + } = this.getData(); + const ratio = source.width / Math.floor(canvasData.naturalWidth); + + if (ratio !== 1) { + initialX *= ratio; + initialY *= ratio; + initialWidth *= ratio; + initialHeight *= ratio; + } + + const aspectRatio = initialWidth / initialHeight; + const maxSizes = getAdjustedSizes({ + aspectRatio, + width: options.maxWidth || Infinity, + height: options.maxHeight || Infinity, + }); + const minSizes = getAdjustedSizes({ + aspectRatio, + width: options.minWidth || 0, + height: options.minHeight || 0, + }, 'cover'); + let { + width, + height, + } = getAdjustedSizes({ + aspectRatio, + width: options.width || (ratio !== 1 ? source.width : initialWidth), + height: options.height || (ratio !== 1 ? source.height : initialHeight), + }); + + width = Math.min(maxSizes.width, Math.max(minSizes.width, width)); + height = Math.min(maxSizes.height, Math.max(minSizes.height, height)); + + const canvas = document.createElement('canvas'); + const context = canvas.getContext('2d'); + + canvas.width = normalizeDecimalNumber(width); + canvas.height = normalizeDecimalNumber(height); + + context.fillStyle = options.fillColor || 'transparent'; + context.fillRect(0, 0, width, height); + + const { imageSmoothingEnabled = true, imageSmoothingQuality } = options; + + context.imageSmoothingEnabled = imageSmoothingEnabled; + + if (imageSmoothingQuality) { + context.imageSmoothingQuality = imageSmoothingQuality; + } + + // https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D.drawImage + const sourceWidth = source.width; + const sourceHeight = source.height; + + // Source canvas parameters + let srcX = initialX; + let srcY = initialY; + let srcWidth; + let srcHeight; + + // Destination canvas parameters + let dstX; + let dstY; + let dstWidth; + let dstHeight; + + if (srcX <= -initialWidth || srcX > sourceWidth) { + srcX = 0; + srcWidth = 0; + dstX = 0; + dstWidth = 0; + } else if (srcX <= 0) { + dstX = -srcX; + srcX = 0; + srcWidth = Math.min(sourceWidth, initialWidth + srcX); + dstWidth = srcWidth; + } else if (srcX <= sourceWidth) { + dstX = 0; + srcWidth = Math.min(initialWidth, sourceWidth - srcX); + dstWidth = srcWidth; + } + + if (srcWidth <= 0 || srcY <= -initialHeight || srcY > sourceHeight) { + srcY = 0; + srcHeight = 0; + dstY = 0; + dstHeight = 0; + } else if (srcY <= 0) { + dstY = -srcY; + srcY = 0; + srcHeight = Math.min(sourceHeight, initialHeight + srcY); + dstHeight = srcHeight; + } else if (srcY <= sourceHeight) { + dstY = 0; + srcHeight = Math.min(initialHeight, sourceHeight - srcY); + dstHeight = srcHeight; + } + + // All the numerical parameters should be integer for `drawImage` + // https://github.com/fengyuanchen/cropper/issues/476 + const params = [ + srcX, + srcY, + srcWidth, + srcHeight, + ]; + + // Avoid "IndexSizeError" + if (dstWidth > 0 && dstHeight > 0) { + const scale = width / initialWidth; + + params.push( + dstX * scale, + dstY * scale, + dstWidth * scale, + dstHeight * scale, + ); + } + + context.drawImage(source, ...params.map(param => Math.floor(normalizeDecimalNumber(param)))); + + return canvas; + }, + + /** + * Change the aspect ratio of the crop box. + * @param {number} aspectRatio - The new aspect ratio. + * @returns {Object} this + */ + setAspectRatio(aspectRatio) { + const { options } = this; + + if (!this.disabled && !isUndefined(aspectRatio)) { + // 0 -> NaN + options.aspectRatio = Math.max(0, aspectRatio) || NaN; + + if (this.ready) { + this.initCropBox(); + + if (this.cropped) { + this.renderCropBox(); + } + } + } + + return this; + }, + + /** + * Change the drag mode. + * @param {string} mode - The new drag mode. + * @returns {Object} this + */ + setDragMode(mode) { + const { options, dragBox, face } = this; + + if (this.loaded && !this.disabled) { + const croppable = mode === DRAG_MODE_CROP; + const movable = options.movable && mode === DRAG_MODE_MOVE; + + mode = (croppable || movable) ? mode : DRAG_MODE_NONE; + + setData(dragBox, DATA_ACTION, mode); + toggleClass(dragBox, CLASS_CROP, croppable); + toggleClass(dragBox, CLASS_MOVE, movable); + + if (!options.cropBoxMovable) { + // Sync drag mode to crop box when it is not movable + setData(face, DATA_ACTION, mode); + toggleClass(face, CLASS_CROP, croppable); + toggleClass(face, CLASS_MOVE, movable); + } + } + + return this; + }, +}; diff --git a/library/cropperjs/src/js/preview.js b/library/cropperjs/src/js/preview.js new file mode 100644 index 000000000..c47d03f4b --- /dev/null +++ b/library/cropperjs/src/js/preview.js @@ -0,0 +1,142 @@ +import { + DATA_PREVIEW, +} from './constants'; +import { + each, + empty, + extend, + getData, + getTransforms, + removeData, + setData, + setStyle, +} from './utilities'; + +export default { + initPreview() { + const { crossOrigin } = this; + const { preview } = this.options; + const url = crossOrigin ? this.crossOriginUrl : this.url; + const image = document.createElement('img'); + + if (crossOrigin) { + image.crossOrigin = crossOrigin; + } + + image.src = url; + this.viewBox.appendChild(image); + this.image2 = image; + + if (!preview) { + return; + } + + const previews = preview.querySelector ? [preview] : document.querySelectorAll(preview); + + this.previews = previews; + + each(previews, (element) => { + const img = document.createElement('img'); + + // Save the original size for recover + setData(element, DATA_PREVIEW, { + width: element.offsetWidth, + height: element.offsetHeight, + html: element.innerHTML, + }); + + if (crossOrigin) { + img.crossOrigin = crossOrigin; + } + + img.src = url; + + /** + * Override img element styles + * Add `display:block` to avoid margin top issue + * Add `height:auto` to override `height` attribute on IE8 + * (Occur only when margin-top <= -height) + */ + img.style.cssText = ( + 'display:block;' + + 'width:100%;' + + 'height:auto;' + + 'min-width:0!important;' + + 'min-height:0!important;' + + 'max-width:none!important;' + + 'max-height:none!important;' + + 'image-orientation:0deg!important;"' + ); + + empty(element); + element.appendChild(img); + }); + }, + + resetPreview() { + each(this.previews, (element) => { + const data = getData(element, DATA_PREVIEW); + + setStyle(element, { + width: data.width, + height: data.height, + }); + + element.innerHTML = data.html; + removeData(element, DATA_PREVIEW); + }); + }, + + preview() { + const { imageData, canvasData, cropBoxData } = this; + const { width: cropBoxWidth, height: cropBoxHeight } = cropBoxData; + const { width, height } = imageData; + const left = cropBoxData.left - canvasData.left - imageData.left; + const top = cropBoxData.top - canvasData.top - imageData.top; + + if (!this.cropped || this.disabled) { + return; + } + + setStyle(this.image2, extend({ + width, + height, + }, getTransforms(extend({ + translateX: -left, + translateY: -top, + }, imageData)))); + + each(this.previews, (element) => { + const data = getData(element, DATA_PREVIEW); + const originalWidth = data.width; + const originalHeight = data.height; + let newWidth = originalWidth; + let newHeight = originalHeight; + let ratio = 1; + + if (cropBoxWidth) { + ratio = originalWidth / cropBoxWidth; + newHeight = cropBoxHeight * ratio; + } + + if (cropBoxHeight && newHeight > originalHeight) { + ratio = originalHeight / cropBoxHeight; + newWidth = cropBoxWidth * ratio; + newHeight = originalHeight; + } + + setStyle(element, { + width: newWidth, + height: newHeight, + }); + + setStyle(element.getElementsByTagName('img')[0], extend({ + width: width * ratio, + height: height * ratio, + }, getTransforms(extend({ + translateX: -left * ratio, + translateY: -top * ratio, + }, imageData)))); + }); + }, +}; diff --git a/library/cropperjs/src/js/render.js b/library/cropperjs/src/js/render.js new file mode 100644 index 000000000..09085ce41 --- /dev/null +++ b/library/cropperjs/src/js/render.js @@ -0,0 +1,495 @@ +import { + ACTION_ALL, + ACTION_MOVE, + CLASS_HIDDEN, + DATA_ACTION, + EVENT_CROP, +} from './constants'; +import { + addClass, + dispatchEvent, + extend, + getAdjustedSizes, + getRotatedSizes, + getTransforms, + removeClass, + setData, + setStyle, +} from './utilities'; + +export default { + render() { + this.initContainer(); + this.initCanvas(); + this.initCropBox(); + this.renderCanvas(); + + if (this.cropped) { + this.renderCropBox(); + } + }, + + initContainer() { + const { + element, + options, + container, + cropper, + } = this; + + addClass(cropper, CLASS_HIDDEN); + removeClass(element, CLASS_HIDDEN); + + const containerData = { + width: Math.max( + container.offsetWidth, + Number(options.minContainerWidth) || 200, + ), + height: Math.max( + container.offsetHeight, + Number(options.minContainerHeight) || 100, + ), + }; + + this.containerData = containerData; + + setStyle(cropper, { + width: containerData.width, + height: containerData.height, + }); + + addClass(element, CLASS_HIDDEN); + removeClass(cropper, CLASS_HIDDEN); + }, + + // Canvas (image wrapper) + initCanvas() { + const { containerData, imageData } = this; + const { viewMode } = this.options; + const rotated = Math.abs(imageData.rotate) % 180 === 90; + const naturalWidth = rotated ? imageData.naturalHeight : imageData.naturalWidth; + const naturalHeight = rotated ? imageData.naturalWidth : imageData.naturalHeight; + const aspectRatio = naturalWidth / naturalHeight; + let canvasWidth = containerData.width; + let canvasHeight = containerData.height; + + if (containerData.height * aspectRatio > containerData.width) { + if (viewMode === 3) { + canvasWidth = containerData.height * aspectRatio; + } else { + canvasHeight = containerData.width / aspectRatio; + } + } else if (viewMode === 3) { + canvasHeight = containerData.width / aspectRatio; + } else { + canvasWidth = containerData.height * aspectRatio; + } + + const canvasData = { + aspectRatio, + naturalWidth, + naturalHeight, + width: canvasWidth, + height: canvasHeight, + }; + + canvasData.left = (containerData.width - canvasWidth) / 2; + canvasData.top = (containerData.height - canvasHeight) / 2; + canvasData.oldLeft = canvasData.left; + canvasData.oldTop = canvasData.top; + + this.canvasData = canvasData; + this.limited = (viewMode === 1 || viewMode === 2); + this.limitCanvas(true, true); + this.initialImageData = extend({}, imageData); + this.initialCanvasData = extend({}, canvasData); + }, + + limitCanvas(sizeLimited, positionLimited) { + const { + options, + containerData, + canvasData, + cropBoxData, + } = this; + const { viewMode } = options; + const { aspectRatio } = canvasData; + const cropped = this.cropped && cropBoxData; + + if (sizeLimited) { + let minCanvasWidth = Number(options.minCanvasWidth) || 0; + let minCanvasHeight = Number(options.minCanvasHeight) || 0; + + if (viewMode > 1) { + minCanvasWidth = Math.max(minCanvasWidth, containerData.width); + minCanvasHeight = Math.max(minCanvasHeight, containerData.height); + + if (viewMode === 3) { + if (minCanvasHeight * aspectRatio > minCanvasWidth) { + minCanvasWidth = minCanvasHeight * aspectRatio; + } else { + minCanvasHeight = minCanvasWidth / aspectRatio; + } + } + } else if (viewMode > 0) { + if (minCanvasWidth) { + minCanvasWidth = Math.max( + minCanvasWidth, + cropped ? cropBoxData.width : 0, + ); + } else if (minCanvasHeight) { + minCanvasHeight = Math.max( + minCanvasHeight, + cropped ? cropBoxData.height : 0, + ); + } else if (cropped) { + minCanvasWidth = cropBoxData.width; + minCanvasHeight = cropBoxData.height; + + if (minCanvasHeight * aspectRatio > minCanvasWidth) { + minCanvasWidth = minCanvasHeight * aspectRatio; + } else { + minCanvasHeight = minCanvasWidth / aspectRatio; + } + } + } + + ({ width: minCanvasWidth, height: minCanvasHeight } = getAdjustedSizes({ + aspectRatio, + width: minCanvasWidth, + height: minCanvasHeight, + }, 'cover')); + + canvasData.minWidth = minCanvasWidth; + canvasData.minHeight = minCanvasHeight; + canvasData.maxWidth = Infinity; + canvasData.maxHeight = Infinity; + } + + if (positionLimited) { + if (viewMode) { + const newCanvasLeft = containerData.width - canvasData.width; + const newCanvasTop = containerData.height - canvasData.height; + + canvasData.minLeft = Math.min(0, newCanvasLeft); + canvasData.minTop = Math.min(0, newCanvasTop); + canvasData.maxLeft = Math.max(0, newCanvasLeft); + canvasData.maxTop = Math.max(0, newCanvasTop); + + if (cropped && this.limited) { + canvasData.minLeft = Math.min( + cropBoxData.left, + cropBoxData.left + (cropBoxData.width - canvasData.width), + ); + canvasData.minTop = Math.min( + cropBoxData.top, + cropBoxData.top + (cropBoxData.height - canvasData.height), + ); + canvasData.maxLeft = cropBoxData.left; + canvasData.maxTop = cropBoxData.top; + + if (viewMode === 2) { + if (canvasData.width >= containerData.width) { + canvasData.minLeft = Math.min(0, newCanvasLeft); + canvasData.maxLeft = Math.max(0, newCanvasLeft); + } + + if (canvasData.height >= containerData.height) { + canvasData.minTop = Math.min(0, newCanvasTop); + canvasData.maxTop = Math.max(0, newCanvasTop); + } + } + } + } else { + canvasData.minLeft = -canvasData.width; + canvasData.minTop = -canvasData.height; + canvasData.maxLeft = containerData.width; + canvasData.maxTop = containerData.height; + } + } + }, + + renderCanvas(changed, transformed) { + const { canvasData, imageData } = this; + + if (transformed) { + const { width: naturalWidth, height: naturalHeight } = getRotatedSizes({ + width: imageData.naturalWidth * Math.abs(imageData.scaleX || 1), + height: imageData.naturalHeight * Math.abs(imageData.scaleY || 1), + degree: imageData.rotate || 0, + }); + const width = canvasData.width * (naturalWidth / canvasData.naturalWidth); + const height = canvasData.height * (naturalHeight / canvasData.naturalHeight); + + canvasData.left -= (width - canvasData.width) / 2; + canvasData.top -= (height - canvasData.height) / 2; + canvasData.width = width; + canvasData.height = height; + canvasData.aspectRatio = naturalWidth / naturalHeight; + canvasData.naturalWidth = naturalWidth; + canvasData.naturalHeight = naturalHeight; + this.limitCanvas(true, false); + } + + if (canvasData.width > canvasData.maxWidth || + canvasData.width < canvasData.minWidth) { + canvasData.left = canvasData.oldLeft; + } + + if (canvasData.height > canvasData.maxHeight || + canvasData.height < canvasData.minHeight) { + canvasData.top = canvasData.oldTop; + } + + canvasData.width = Math.min( + Math.max(canvasData.width, canvasData.minWidth), + canvasData.maxWidth, + ); + canvasData.height = Math.min( + Math.max(canvasData.height, canvasData.minHeight), + canvasData.maxHeight, + ); + + this.limitCanvas(false, true); + + canvasData.left = Math.min( + Math.max(canvasData.left, canvasData.minLeft), + canvasData.maxLeft, + ); + canvasData.top = Math.min( + Math.max(canvasData.top, canvasData.minTop), + canvasData.maxTop, + ); + canvasData.oldLeft = canvasData.left; + canvasData.oldTop = canvasData.top; + + setStyle(this.canvas, extend({ + width: canvasData.width, + height: canvasData.height, + }, getTransforms({ + translateX: canvasData.left, + translateY: canvasData.top, + }))); + + this.renderImage(changed); + + if (this.cropped && this.limited) { + this.limitCropBox(true, true); + } + }, + + renderImage(changed) { + const { canvasData, imageData } = this; + const width = imageData.naturalWidth * (canvasData.width / canvasData.naturalWidth); + const height = imageData.naturalHeight * (canvasData.height / canvasData.naturalHeight); + + extend(imageData, { + width, + height, + left: (canvasData.width - width) / 2, + top: (canvasData.height - height) / 2, + }); + setStyle(this.image, extend({ + width: imageData.width, + height: imageData.height, + }, getTransforms(extend({ + translateX: imageData.left, + translateY: imageData.top, + }, imageData)))); + + if (changed) { + this.output(); + } + }, + + initCropBox() { + const { options, canvasData } = this; + const { aspectRatio } = options; + const autoCropArea = Number(options.autoCropArea) || 0.8; + const cropBoxData = { + width: canvasData.width, + height: canvasData.height, + }; + + if (aspectRatio) { + if (canvasData.height * aspectRatio > canvasData.width) { + cropBoxData.height = cropBoxData.width / aspectRatio; + } else { + cropBoxData.width = cropBoxData.height * aspectRatio; + } + } + + this.cropBoxData = cropBoxData; + this.limitCropBox(true, true); + + // Initialize auto crop area + cropBoxData.width = Math.min( + Math.max(cropBoxData.width, cropBoxData.minWidth), + cropBoxData.maxWidth, + ); + cropBoxData.height = Math.min( + Math.max(cropBoxData.height, cropBoxData.minHeight), + cropBoxData.maxHeight, + ); + + // The width/height of auto crop area must large than "minWidth/Height" + cropBoxData.width = Math.max( + cropBoxData.minWidth, + cropBoxData.width * autoCropArea, + ); + cropBoxData.height = Math.max( + cropBoxData.minHeight, + cropBoxData.height * autoCropArea, + ); + cropBoxData.left = ( + canvasData.left + ((canvasData.width - cropBoxData.width) / 2) + ); + cropBoxData.top = ( + canvasData.top + ((canvasData.height - cropBoxData.height) / 2) + ); + cropBoxData.oldLeft = cropBoxData.left; + cropBoxData.oldTop = cropBoxData.top; + + this.initialCropBoxData = extend({}, cropBoxData); + }, + + limitCropBox(sizeLimited, positionLimited) { + const { + options, + containerData, + canvasData, + cropBoxData, + limited, + } = this; + const { aspectRatio } = options; + + if (sizeLimited) { + let minCropBoxWidth = Number(options.minCropBoxWidth) || 0; + let minCropBoxHeight = Number(options.minCropBoxHeight) || 0; + let maxCropBoxWidth = Math.min( + containerData.width, + limited ? canvasData.width : containerData.width, + ); + let maxCropBoxHeight = Math.min( + containerData.height, + limited ? canvasData.height : containerData.height, + ); + + // The min/maxCropBoxWidth/Height must be less than container's width/height + minCropBoxWidth = Math.min(minCropBoxWidth, containerData.width); + minCropBoxHeight = Math.min(minCropBoxHeight, containerData.height); + + if (aspectRatio) { + if (minCropBoxWidth && minCropBoxHeight) { + if (minCropBoxHeight * aspectRatio > minCropBoxWidth) { + minCropBoxHeight = minCropBoxWidth / aspectRatio; + } else { + minCropBoxWidth = minCropBoxHeight * aspectRatio; + } + } else if (minCropBoxWidth) { + minCropBoxHeight = minCropBoxWidth / aspectRatio; + } else if (minCropBoxHeight) { + minCropBoxWidth = minCropBoxHeight * aspectRatio; + } + + if (maxCropBoxHeight * aspectRatio > maxCropBoxWidth) { + maxCropBoxHeight = maxCropBoxWidth / aspectRatio; + } else { + maxCropBoxWidth = maxCropBoxHeight * aspectRatio; + } + } + + // The minWidth/Height must be less than maxWidth/Height + cropBoxData.minWidth = Math.min(minCropBoxWidth, maxCropBoxWidth); + cropBoxData.minHeight = Math.min(minCropBoxHeight, maxCropBoxHeight); + cropBoxData.maxWidth = maxCropBoxWidth; + cropBoxData.maxHeight = maxCropBoxHeight; + } + + if (positionLimited) { + if (limited) { + cropBoxData.minLeft = Math.max(0, canvasData.left); + cropBoxData.minTop = Math.max(0, canvasData.top); + cropBoxData.maxLeft = Math.min( + containerData.width, + canvasData.left + canvasData.width, + ) - cropBoxData.width; + cropBoxData.maxTop = Math.min( + containerData.height, + canvasData.top + canvasData.height, + ) - cropBoxData.height; + } else { + cropBoxData.minLeft = 0; + cropBoxData.minTop = 0; + cropBoxData.maxLeft = containerData.width - cropBoxData.width; + cropBoxData.maxTop = containerData.height - cropBoxData.height; + } + } + }, + + renderCropBox() { + const { options, containerData, cropBoxData } = this; + + if (cropBoxData.width > cropBoxData.maxWidth || + cropBoxData.width < cropBoxData.minWidth) { + cropBoxData.left = cropBoxData.oldLeft; + } + + if (cropBoxData.height > cropBoxData.maxHeight || + cropBoxData.height < cropBoxData.minHeight) { + cropBoxData.top = cropBoxData.oldTop; + } + + cropBoxData.width = Math.min( + Math.max(cropBoxData.width, cropBoxData.minWidth), + cropBoxData.maxWidth, + ); + cropBoxData.height = Math.min( + Math.max(cropBoxData.height, cropBoxData.minHeight), + cropBoxData.maxHeight, + ); + + this.limitCropBox(false, true); + + cropBoxData.left = Math.min( + Math.max(cropBoxData.left, cropBoxData.minLeft), + cropBoxData.maxLeft, + ); + cropBoxData.top = Math.min( + Math.max(cropBoxData.top, cropBoxData.minTop), + cropBoxData.maxTop, + ); + cropBoxData.oldLeft = cropBoxData.left; + cropBoxData.oldTop = cropBoxData.top; + + if (options.movable && options.cropBoxMovable) { + // Turn to move the canvas when the crop box is equal to the container + setData(this.face, DATA_ACTION, cropBoxData.width >= containerData.width && + cropBoxData.height >= containerData.height ? ACTION_MOVE : ACTION_ALL); + } + + setStyle(this.cropBox, extend({ + width: cropBoxData.width, + height: cropBoxData.height, + }, getTransforms({ + translateX: cropBoxData.left, + translateY: cropBoxData.top, + }))); + + if (this.cropped && this.limited) { + this.limitCanvas(true, true); + } + + if (!this.disabled) { + this.output(); + } + }, + + output() { + this.preview(); + + if (this.complete) { + dispatchEvent(this.element, EVENT_CROP, this.getData()); + } + }, +}; diff --git a/library/cropperjs/src/js/template.js b/library/cropperjs/src/js/template.js new file mode 100644 index 000000000..589b46a78 --- /dev/null +++ b/library/cropperjs/src/js/template.js @@ -0,0 +1,27 @@ +export default ( + '
' + + '
' + + '
' + + '
' + + '
' + + '
' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '' + + '
' + + '
' +); diff --git a/library/cropperjs/src/js/utilities.js b/library/cropperjs/src/js/utilities.js new file mode 100644 index 000000000..50b586a76 --- /dev/null +++ b/library/cropperjs/src/js/utilities.js @@ -0,0 +1,985 @@ +import { + WINDOW, +} from './constants'; + +/** + * Check if the given value is not a number. + */ +export const isNaN = Number.isNaN || WINDOW.isNaN; + +/** + * Check if the given value is a number. + * @param {*} value - The value to check. + * @returns {boolean} Returns `true` if the given value is a number, else `false`. + */ +export function isNumber(value) { + return typeof value === 'number' && !isNaN(value); +} + +/** + * Check if the given value is undefined. + * @param {*} value - The value to check. + * @returns {boolean} Returns `true` if the given value is undefined, else `false`. + */ +export function isUndefined(value) { + return typeof value === 'undefined'; +} + +/** + * Check if the given value is an object. + * @param {*} value - The value to check. + * @returns {boolean} Returns `true` if the given value is an object, else `false`. + */ +export function isObject(value) { + return typeof value === 'object' && value !== null; +} + +const { hasOwnProperty } = Object.prototype; + +/** + * Check if the given value is a plain object. + * @param {*} value - The value to check. + * @returns {boolean} Returns `true` if the given value is a plain object, else `false`. + */ +export function isPlainObject(value) { + if (!isObject(value)) { + return false; + } + + try { + const { constructor } = value; + const { prototype } = constructor; + + return constructor && prototype && hasOwnProperty.call(prototype, 'isPrototypeOf'); + } catch (e) { + return false; + } +} + +/** + * Check if the given value is a function. + * @param {*} value - The value to check. + * @returns {boolean} Returns `true` if the given value is a function, else `false`. + */ +export function isFunction(value) { + return typeof value === 'function'; +} + +/** + * Iterate the given data. + * @param {*} data - The data to iterate. + * @param {Function} callback - The process function for each element. + * @returns {*} The original data. + */ +export function each(data, callback) { + if (data && isFunction(callback)) { + if (Array.isArray(data) || isNumber(data.length)/* array-like */) { + const { length } = data; + let i; + + for (i = 0; i < length; i += 1) { + if (callback.call(data, data[i], i, data) === false) { + break; + } + } + } else if (isObject(data)) { + Object.keys(data).forEach((key) => { + callback.call(data, data[key], key, data); + }); + } + } + + return data; +} + +/** + * Extend the given object. + * @param {*} obj - The object to be extended. + * @param {*} args - The rest objects which will be merged to the first object. + * @returns {Object} The extended object. + */ +export function extend(obj, ...args) { + if (isObject(obj) && args.length > 0) { + if (Object.assign) { + return Object.assign(obj, ...args); + } + + args.forEach((arg) => { + if (isObject(arg)) { + Object.keys(arg).forEach((key) => { + obj[key] = arg[key]; + }); + } + }); + } + + return obj; +} + +/** + * Takes a function and returns a new one that will always have a particular context. + * @param {Function} fn - The target function. + * @param {Object} context - The new context for the function. + * @returns {boolean} The new function. + */ +export function proxy(fn, context, ...args) { + return (...args2) => fn.apply(context, args.concat(args2)); +} + +const REGEXP_DECIMALS = /\.\d*(?:0|9){12}\d*$/i; + +/** + * Normalize decimal number. + * Check out {@link http://0.30000000000000004.com/ } + * @param {number} value - The value to normalize. + * @param {number} [times=100000000000] - The times for normalizing. + * @returns {number} Returns the normalized number. + */ +export function normalizeDecimalNumber(value, times = 100000000000) { + return REGEXP_DECIMALS.test(value) ? (Math.round(value * times) / times) : value; +} + +const REGEXP_SUFFIX = /^(?:width|height|left|top|marginLeft|marginTop)$/; + +/** + * Apply styles to the given element. + * @param {Element} element - The target element. + * @param {Object} styles - The styles for applying. + */ +export function setStyle(element, styles) { + const { style } = element; + + each(styles, (value, property) => { + if (REGEXP_SUFFIX.test(property) && isNumber(value)) { + value += 'px'; + } + + style[property] = value; + }); +} + +/** + * Check if the given element has a special class. + * @param {Element} element - The element to check. + * @param {string} value - The class to search. + * @returns {boolean} Returns `true` if the special class was found. + */ +export function hasClass(element, value) { + return element.classList ? + element.classList.contains(value) : + element.className.indexOf(value) > -1; +} + +/** + * Add classes to the given element. + * @param {Element} element - The target element. + * @param {string} value - The classes to be added. + */ +export function addClass(element, value) { + if (!value) { + return; + } + + if (isNumber(element.length)) { + each(element, (elem) => { + addClass(elem, value); + }); + return; + } + + if (element.classList) { + element.classList.add(value); + return; + } + + const className = element.className.trim(); + + if (!className) { + element.className = value; + } else if (className.indexOf(value) < 0) { + element.className = `${className} ${value}`; + } +} + +/** + * Remove classes from the given element. + * @param {Element} element - The target element. + * @param {string} value - The classes to be removed. + */ +export function removeClass(element, value) { + if (!value) { + return; + } + + if (isNumber(element.length)) { + each(element, (elem) => { + removeClass(elem, value); + }); + return; + } + + if (element.classList) { + element.classList.remove(value); + return; + } + + if (element.className.indexOf(value) >= 0) { + element.className = element.className.replace(value, ''); + } +} + +/** + * Add or remove classes from the given element. + * @param {Element} element - The target element. + * @param {string} value - The classes to be toggled. + * @param {boolean} added - Add only. + */ +export function toggleClass(element, value, added) { + if (!value) { + return; + } + + if (isNumber(element.length)) { + each(element, (elem) => { + toggleClass(elem, value, added); + }); + return; + } + + // IE10-11 doesn't support the second parameter of `classList.toggle` + if (added) { + addClass(element, value); + } else { + removeClass(element, value); + } +} + +const REGEXP_HYPHENATE = /([a-z\d])([A-Z])/g; + +/** + * Hyphenate the given value. + * @param {string} value - The value to hyphenate. + * @returns {string} The hyphenated value. + */ +export function hyphenate(value) { + return value.replace(REGEXP_HYPHENATE, '$1-$2').toLowerCase(); +} + +/** + * Get data from the given element. + * @param {Element} element - The target element. + * @param {string} name - The data key to get. + * @returns {string} The data value. + */ +export function getData(element, name) { + if (isObject(element[name])) { + return element[name]; + } else if (element.dataset) { + return element.dataset[name]; + } + + return element.getAttribute(`data-${hyphenate(name)}`); +} + +/** + * Set data to the given element. + * @param {Element} element - The target element. + * @param {string} name - The data key to set. + * @param {string} data - The data value. + */ +export function setData(element, name, data) { + if (isObject(data)) { + element[name] = data; + } else if (element.dataset) { + element.dataset[name] = data; + } else { + element.setAttribute(`data-${hyphenate(name)}`, data); + } +} + +/** + * Remove data from the given element. + * @param {Element} element - The target element. + * @param {string} name - The data key to remove. + */ +export function removeData(element, name) { + if (isObject(element[name])) { + try { + delete element[name]; + } catch (e) { + element[name] = null; + } + } else if (element.dataset) { + // #128 Safari not allows to delete dataset property + try { + delete element.dataset[name]; + } catch (e) { + element.dataset[name] = null; + } + } else { + element.removeAttribute(`data-${hyphenate(name)}`); + } +} + +const REGEXP_SPACES = /\s\s*/; + +/** + * Remove event listener from the target element. + * @param {Element} element - The event target. + * @param {string} type - The event type(s). + * @param {Function} listener - The event listener. + * @param {Object} options - The event options. + */ +export function removeListener(element, type, listener, options = {}) { + if (!isFunction(listener)) { + return; + } + + const types = type.trim().split(REGEXP_SPACES); + + if (types.length > 1) { + each(types, (t) => { + removeListener(element, t, listener, options); + }); + return; + } + + if (element.removeEventListener) { + element.removeEventListener(type, listener, options); + } else if (element.detachEvent) { + element.detachEvent(`on${type}`, listener); + } +} + +/** + * Add event listener to the target element. + * @param {Element} element - The event target. + * @param {string} type - The event type(s). + * @param {Function} listener - The event listener. + * @param {Object} options - The event options. + */ +export function addListener(element, type, listener, options = {}) { + if (!isFunction(listener)) { + return; + } + + const types = type.trim().split(REGEXP_SPACES); + + if (types.length > 1) { + each(types, (t) => { + addListener(element, t, listener, options); + }); + return; + } + + if (options.once) { + const originalListener = listener; + + listener = (...args) => { + removeListener(element, type, listener, options); + return originalListener.apply(element, args); + }; + } + + if (element.addEventListener) { + element.addEventListener(type, listener, options); + } else if (element.attachEvent) { + element.attachEvent(`on${type}`, listener); + } +} + +/** + * Dispatch event on the target element. + * @param {Element} element - The event target. + * @param {string} type - The event type(s). + * @param {Object} data - The additional event data. + * @returns {boolean} Indicate if the event is default prevented or not. + */ +export function dispatchEvent(element, type, data) { + if (element.dispatchEvent) { + let event; + + // Event and CustomEvent on IE9-11 are global objects, not constructors + if (isFunction(Event) && isFunction(CustomEvent)) { + if (isUndefined(data)) { + event = new Event(type, { + bubbles: true, + cancelable: true, + }); + } else { + event = new CustomEvent(type, { + detail: data, + bubbles: true, + cancelable: true, + }); + } + } else if (isUndefined(data)) { + event = document.createEvent('Event'); + event.initEvent(type, true, true); + } else { + event = document.createEvent('CustomEvent'); + event.initCustomEvent(type, true, true, data); + } + + // IE9+ + return element.dispatchEvent(event); + } else if (element.fireEvent) { + // IE6-10 (native events only) + return element.fireEvent(`on${type}`); + } + + return true; +} + +/** + * Get the offset base on the document. + * @param {Element} element - The target element. + * @returns {Object} The offset data. + */ +export function getOffset(element) { + const doc = document.documentElement; + const box = element.getBoundingClientRect(); + + return { + left: box.left + ( + (window.scrollX || (doc && doc.scrollLeft) || 0) - ((doc && doc.clientLeft) || 0) + ), + top: box.top + ( + (window.scrollY || (doc && doc.scrollTop) || 0) - ((doc && doc.clientTop) || 0) + ), + }; +} + +/** + * Empty an element. + * @param {Element} element - The element to empty. + */ +export function empty(element) { + while (element.firstChild) { + element.removeChild(element.firstChild); + } +} + +const { location } = WINDOW; +const REGEXP_ORIGINS = /^(https?:)\/\/([^:/?#]+):?(\d*)/i; + +/** + * Check if the given URL is a cross origin URL. + * @param {string} url - The target URL. + * @returns {boolean} Returns `true` if the given URL is a cross origin URL, else `false`. + */ +export function isCrossOriginURL(url) { + const parts = url.match(REGEXP_ORIGINS); + + return parts && ( + parts[1] !== location.protocol || + parts[2] !== location.hostname || + parts[3] !== location.port + ); +} + +/** + * Add timestamp to the given URL. + * @param {string} url - The target URL. + * @returns {string} The result URL. + */ +export function addTimestamp(url) { + const timestamp = `timestamp=${(new Date()).getTime()}`; + + return (url + (url.indexOf('?') === -1 ? '?' : '&') + timestamp); +} + +/** + * Get transforms base on the given object. + * @param {Object} obj - The target object. + * @returns {string} A string contains transform values. + */ +export function getTransforms({ + rotate, + scaleX, + scaleY, + translateX, + translateY, +}) { + const values = []; + + if (isNumber(translateX) && translateX !== 0) { + values.push(`translateX(${translateX}px)`); + } + + if (isNumber(translateY) && translateY !== 0) { + values.push(`translateY(${translateY}px)`); + } + + // Rotate should come first before scale to match orientation transform + if (isNumber(rotate) && rotate !== 0) { + values.push(`rotate(${rotate}deg)`); + } + + if (isNumber(scaleX) && scaleX !== 1) { + values.push(`scaleX(${scaleX})`); + } + + if (isNumber(scaleY) && scaleY !== 1) { + values.push(`scaleY(${scaleY})`); + } + + const transform = values.length ? values.join(' ') : 'none'; + + return { + WebkitTransform: transform, + msTransform: transform, + transform, + }; +} + +const { navigator } = WINDOW; +const IS_SAFARI_OR_UIWEBVIEW = navigator && /(Macintosh|iPhone|iPod|iPad).*AppleWebKit/i.test(navigator.userAgent); + +/** + * Get an image's natural sizes. + * @param {string} image - The target image. + * @param {Function} callback - The callback function. + */ +export function getImageNaturalSizes(image, callback) { + // Modern browsers (except Safari) + if (image.naturalWidth && !IS_SAFARI_OR_UIWEBVIEW) { + callback(image.naturalWidth, image.naturalHeight); + return; + } + + const newImage = document.createElement('img'); + const body = document.body || document.documentElement; + + newImage.onload = () => { + callback(newImage.width, newImage.height); + + if (!IS_SAFARI_OR_UIWEBVIEW) { + body.removeChild(newImage); + } + }; + + newImage.src = image.src; + + // iOS Safari will convert the image automatically + // with its orientation once append it into DOM (#279) + if (!IS_SAFARI_OR_UIWEBVIEW) { + newImage.style.cssText = ( + 'left:0;' + + 'max-height:none!important;' + + 'max-width:none!important;' + + 'min-height:0!important;' + + 'min-width:0!important;' + + 'opacity:0;' + + 'position:absolute;' + + 'top:0;' + + 'z-index:-1;' + ); + body.appendChild(newImage); + } +} + +/** + * Get the max ratio of a group of pointers. + * @param {string} pointers - The target pointers. + * @returns {number} The result ratio. + */ +export function getMaxZoomRatio(pointers) { + const pointers2 = extend({}, pointers); + const ratios = []; + + each(pointers, (pointer, pointerId) => { + delete pointers2[pointerId]; + + each(pointers2, (pointer2) => { + const x1 = Math.abs(pointer.startX - pointer2.startX); + const y1 = Math.abs(pointer.startY - pointer2.startY); + const x2 = Math.abs(pointer.endX - pointer2.endX); + const y2 = Math.abs(pointer.endY - pointer2.endY); + const z1 = Math.sqrt((x1 * x1) + (y1 * y1)); + const z2 = Math.sqrt((x2 * x2) + (y2 * y2)); + const ratio = (z2 - z1) / z1; + + ratios.push(ratio); + }); + }); + + ratios.sort((a, b) => Math.abs(a) < Math.abs(b)); + + return ratios[0]; +} + +/** + * Get a pointer from an event object. + * @param {Object} event - The target event object. + * @param {boolean} endOnly - Indicates if only returns the end point coordinate or not. + * @returns {Object} The result pointer contains start and/or end point coordinates. + */ +export function getPointer({ pageX, pageY }, endOnly) { + const end = { + endX: pageX, + endY: pageY, + }; + + if (endOnly) { + return end; + } + + return extend({ + startX: pageX, + startY: pageY, + }, end); +} + +/** + * Get the center point coordinate of a group of pointers. + * @param {Object} pointers - The target pointers. + * @returns {Object} The center point coordinate. + */ +export function getPointersCenter(pointers) { + let pageX = 0; + let pageY = 0; + let count = 0; + + each(pointers, ({ startX, startY }) => { + pageX += startX; + pageY += startY; + count += 1; + }); + + pageX /= count; + pageY /= count; + + return { + pageX, + pageY, + }; +} + +/** + * Check if the given value is a finite number. + */ +export const isFinite = Number.isFinite || WINDOW.isFinite; + +/** + * Get the max sizes in a rectangle under the given aspect ratio. + * @param {Object} data - The original sizes. + * @param {string} [type='contain'] - The adjust type. + * @returns {Object} The result sizes. + */ +export function getAdjustedSizes( + { + aspectRatio, + height, + width, + }, + type = 'contain', // or 'cover' +) { + const isValidNumber = value => isFinite(value) && value > 0; + + if (isValidNumber(width) && isValidNumber(height)) { + const adjustedWidth = height * aspectRatio; + + if ((type === 'contain' && adjustedWidth > width) || (type === 'cover' && adjustedWidth < width)) { + height = width / aspectRatio; + } else { + width = height * aspectRatio; + } + } else if (isValidNumber(width)) { + height = width / aspectRatio; + } else if (isValidNumber(height)) { + width = height * aspectRatio; + } + + return { + width, + height, + }; +} + +/** + * Get the new sizes of a rectangle after rotated. + * @param {Object} data - The original sizes. + * @returns {Object} The result sizes. + */ +export function getRotatedSizes({ width, height, degree }) { + degree = Math.abs(degree) % 180; + + if (degree === 90) { + return { + width: height, + height: width, + }; + } + + const arc = ((degree % 90) * Math.PI) / 180; + const sinArc = Math.sin(arc); + const cosArc = Math.cos(arc); + const newWidth = (width * cosArc) + (height * sinArc); + const newHeight = (width * sinArc) + (height * cosArc); + + return degree > 90 ? { + width: newHeight, + height: newWidth, + } : { + width: newWidth, + height: newHeight, + }; +} + +/** + * Get a canvas which drew the given image. + * @param {HTMLImageElement} image - The image for drawing. + * @param {Object} imageData - The image data. + * @param {Object} canvasData - The canvas data. + * @param {Object} options - The options. + * @returns {HTMLCanvasElement} The result canvas. + */ +export function getSourceCanvas( + image, + { + rotate = 0, + scaleX = 1, + scaleY = 1, + }, + { + aspectRatio, + naturalWidth, + naturalHeight, + }, + { + fillColor = 'transparent', + imageSmoothingEnabled = true, + imageSmoothingQuality = 'low', + maxWidth = Infinity, + maxHeight = Infinity, + minWidth = 0, + minHeight = 0, + }, +) { + const canvas = document.createElement('canvas'); + const context = canvas.getContext('2d'); + const maxSizes = getAdjustedSizes({ + aspectRatio, + width: maxWidth, + height: maxHeight, + }); + const minSizes = getAdjustedSizes({ + aspectRatio, + width: minWidth, + height: minHeight, + }, 'cover'); + const width = Math.min(maxSizes.width, Math.max(minSizes.width, naturalWidth)); + const height = Math.min(maxSizes.height, Math.max(minSizes.height, naturalHeight)); + const params = [ + -width / 2, + -height / 2, + width, + height, + ]; + + canvas.width = normalizeDecimalNumber(width); + canvas.height = normalizeDecimalNumber(height); + context.fillStyle = fillColor; + context.fillRect(0, 0, width, height); + context.save(); + context.translate(width / 2, height / 2); + context.rotate((rotate * Math.PI) / 180); + context.scale(scaleX, scaleY); + context.imageSmoothingEnabled = imageSmoothingEnabled; + context.imageSmoothingQuality = imageSmoothingQuality; + context.drawImage(image, ...params.map(param => Math.floor(normalizeDecimalNumber(param)))); + context.restore(); + return canvas; +} + +const { fromCharCode } = String; + +/** + * Get string from char code in data view. + * @param {DataView} dataView - The data view for read. + * @param {number} start - The start index. + * @param {number} length - The read length. + * @returns {string} The read result. + */ +export function getStringFromCharCode(dataView, start, length) { + let str = ''; + let i; + + length += start; + + for (i = start; i < length; i += 1) { + str += fromCharCode(dataView.getUint8(i)); + } + + return str; +} + +const REGEXP_DATA_URL_HEAD = /^data:.*,/; + +/** + * Transform Data URL to array buffer. + * @param {string} dataURL - The Data URL to transform. + * @returns {ArrayBuffer} The result array buffer. + */ +export function dataURLToArrayBuffer(dataURL) { + const base64 = dataURL.replace(REGEXP_DATA_URL_HEAD, ''); + const binary = atob(base64); + const arrayBuffer = new ArrayBuffer(binary.length); + const uint8 = new Uint8Array(arrayBuffer); + + each(uint8, (value, i) => { + uint8[i] = binary.charCodeAt(i); + }); + + return arrayBuffer; +} + +/** + * Transform array buffer to Data URL. + * @param {ArrayBuffer} arrayBuffer - The array buffer to transform. + * @param {string} mimeType - The mime type of the Data URL. + * @returns {string} The result Data URL. + */ +export function arrayBufferToDataURL(arrayBuffer, mimeType) { + const uint8 = new Uint8Array(arrayBuffer); + let data = ''; + + // TypedArray.prototype.forEach is not supported in some browsers. + each(uint8, (value) => { + data += fromCharCode(value); + }); + + return `data:${mimeType};base64,${btoa(data)}`; +} + +/** + * Get orientation value from given array buffer. + * @param {ArrayBuffer} arrayBuffer - The array buffer to read. + * @returns {number} The read orientation value. + */ +export function getOrientation(arrayBuffer) { + const dataView = new DataView(arrayBuffer); + let orientation; + let littleEndian; + let app1Start; + let ifdStart; + + // Only handle JPEG image (start by 0xFFD8) + if (dataView.getUint8(0) === 0xFF && dataView.getUint8(1) === 0xD8) { + const length = dataView.byteLength; + let offset = 2; + + while (offset < length) { + if (dataView.getUint8(offset) === 0xFF && dataView.getUint8(offset + 1) === 0xE1) { + app1Start = offset; + break; + } + + offset += 1; + } + } + + if (app1Start) { + const exifIDCode = app1Start + 4; + const tiffOffset = app1Start + 10; + + if (getStringFromCharCode(dataView, exifIDCode, 4) === 'Exif') { + const endianness = dataView.getUint16(tiffOffset); + + littleEndian = endianness === 0x4949; + + if (littleEndian || endianness === 0x4D4D /* bigEndian */) { + if (dataView.getUint16(tiffOffset + 2, littleEndian) === 0x002A) { + const firstIFDOffset = dataView.getUint32(tiffOffset + 4, littleEndian); + + if (firstIFDOffset >= 0x00000008) { + ifdStart = tiffOffset + firstIFDOffset; + } + } + } + } + } + + if (ifdStart) { + const length = dataView.getUint16(ifdStart, littleEndian); + let offset; + let i; + + for (i = 0; i < length; i += 1) { + offset = ifdStart + (i * 12) + 2; + + if (dataView.getUint16(offset, littleEndian) === 0x0112 /* Orientation */) { + // 8 is the offset of the current tag's value + offset += 8; + + // Get the original orientation value + orientation = dataView.getUint16(offset, littleEndian); + + // Override the orientation with its default value + dataView.setUint16(offset, 1, littleEndian); + break; + } + } + } + + return orientation; +} + +/** + * Parse Exif Orientation value. + * @param {number} orientation - The orientation to parse. + * @returns {Object} The parsed result. + */ +export function parseOrientation(orientation) { + let rotate = 0; + let scaleX = 1; + let scaleY = 1; + + switch (orientation) { + // Flip horizontal + case 2: + scaleX = -1; + break; + + // Rotate left 180° + case 3: + rotate = -180; + break; + + // Flip vertical + case 4: + scaleY = -1; + break; + + // Flip vertical and rotate right 90° + case 5: + rotate = 90; + scaleY = -1; + break; + + // Rotate right 90° + case 6: + rotate = 90; + break; + + // Flip horizontal and rotate right 90° + case 7: + rotate = 90; + scaleX = -1; + break; + + // Rotate left 90° + case 8: + rotate = -90; + break; + + default: + } + + return { + rotate, + scaleX, + scaleY, + }; +} -- cgit v1.2.3