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cropper.js
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cropper.js
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/*!
* Cropper.js v1.5.13
* https://fengyuanchen.github.io/cropperjs
*
* Copyright 2015-present Chen Fengyuan
* Released under the MIT license
*
* Date: 2022-11-20T05:30:46.114Z
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Cropper = factory());
})(this, (function () { 'use strict';
function ownKeys(object, enumerableOnly) {
var keys = Object.keys(object);
if (Object.getOwnPropertySymbols) {
var symbols = Object.getOwnPropertySymbols(object);
enumerableOnly && (symbols = symbols.filter(function (sym) {
return Object.getOwnPropertyDescriptor(object, sym).enumerable;
})), keys.push.apply(keys, symbols);
}
return keys;
}
function _objectSpread2(target) {
for (var i = 1; i < arguments.length; i++) {
var source = null != arguments[i] ? arguments[i] : {};
i % 2 ? ownKeys(Object(source), !0).forEach(function (key) {
_defineProperty(target, key, source[key]);
}) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) {
Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));
});
}
return target;
}
function _typeof(obj) {
"@babel/helpers - typeof";
return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
return typeof obj;
} : function (obj) {
return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
}, _typeof(obj);
}
function _classCallCheck(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
function _defineProperties(target, props) {
for (var i = 0; i < props.length; i++) {
var descriptor = props[i];
descriptor.enumerable = descriptor.enumerable || false;
descriptor.configurable = true;
if ("value" in descriptor) descriptor.writable = true;
Object.defineProperty(target, descriptor.key, descriptor);
}
}
function _createClass(Constructor, protoProps, staticProps) {
if (protoProps) _defineProperties(Constructor.prototype, protoProps);
if (staticProps) _defineProperties(Constructor, staticProps);
Object.defineProperty(Constructor, "prototype", {
writable: false
});
return Constructor;
}
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function _toConsumableArray(arr) {
return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
}
function _arrayWithoutHoles(arr) {
if (Array.isArray(arr)) return _arrayLikeToArray(arr);
}
function _iterableToArray(iter) {
if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
}
function _unsupportedIterableToArray(o, minLen) {
if (!o) return;
if (typeof o === "string") return _arrayLikeToArray(o, minLen);
var n = Object.prototype.toString.call(o).slice(8, -1);
if (n === "Object" && o.constructor) n = o.constructor.name;
if (n === "Map" || n === "Set") return Array.from(o);
if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}
function _arrayLikeToArray(arr, len) {
if (len == null || len > arr.length) len = arr.length;
for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
return arr2;
}
function _nonIterableSpread() {
throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
var IS_BROWSER = typeof window !== 'undefined' && typeof window.document !== 'undefined';
var WINDOW = IS_BROWSER ? window : {};
var IS_TOUCH_DEVICE = IS_BROWSER && WINDOW.document.documentElement ? 'ontouchstart' in WINDOW.document.documentElement : false;
var HAS_POINTER_EVENT = IS_BROWSER ? 'PointerEvent' in WINDOW : false;
var NAMESPACE = 'cropper';
// Actions
var ACTION_ALL = 'all';
var ACTION_CROP = 'crop';
var ACTION_MOVE = 'move';
var ACTION_ZOOM = 'zoom';
var ACTION_EAST = 'e';
var ACTION_WEST = 'w';
var ACTION_SOUTH = 's';
var ACTION_NORTH = 'n';
var ACTION_NORTH_EAST = 'ne';
var ACTION_NORTH_WEST = 'nw';
var ACTION_SOUTH_EAST = 'se';
var ACTION_SOUTH_WEST = 'sw';
// Classes
var CLASS_CROP = "".concat(NAMESPACE, "-crop");
var CLASS_DISABLED = "".concat(NAMESPACE, "-disabled");
var CLASS_HIDDEN = "".concat(NAMESPACE, "-hidden");
var CLASS_HIDE = "".concat(NAMESPACE, "-hide");
var CLASS_INVISIBLE = "".concat(NAMESPACE, "-invisible");
var CLASS_MODAL = "".concat(NAMESPACE, "-modal");
var CLASS_MOVE = "".concat(NAMESPACE, "-move");
// Data keys
var DATA_ACTION = "".concat(NAMESPACE, "Action");
var DATA_PREVIEW = "".concat(NAMESPACE, "Preview");
// Drag modes
var DRAG_MODE_CROP = 'crop';
var DRAG_MODE_MOVE = 'move';
var DRAG_MODE_NONE = 'none';
// Events
var EVENT_CROP = 'crop';
var EVENT_CROP_END = 'cropend';
var EVENT_CROP_MOVE = 'cropmove';
var EVENT_CROP_START = 'cropstart';
var EVENT_DBLCLICK = 'dblclick';
var EVENT_TOUCH_START = IS_TOUCH_DEVICE ? 'touchstart' : 'mousedown';
var EVENT_TOUCH_MOVE = IS_TOUCH_DEVICE ? 'touchmove' : 'mousemove';
var EVENT_TOUCH_END = IS_TOUCH_DEVICE ? 'touchend touchcancel' : 'mouseup';
var EVENT_POINTER_DOWN = HAS_POINTER_EVENT ? 'pointerdown' : EVENT_TOUCH_START;
var EVENT_POINTER_MOVE = HAS_POINTER_EVENT ? 'pointermove' : EVENT_TOUCH_MOVE;
var EVENT_POINTER_UP = HAS_POINTER_EVENT ? 'pointerup pointercancel' : EVENT_TOUCH_END;
var EVENT_READY = 'ready';
var EVENT_RESIZE = 'resize';
var EVENT_WHEEL = 'wheel';
var EVENT_ZOOM = 'zoom';
// Mime types
var MIME_TYPE_JPEG = 'image/jpeg';
// RegExps
var REGEXP_ACTIONS = /^e|w|s|n|se|sw|ne|nw|all|crop|move|zoom$/;
var REGEXP_DATA_URL = /^data:/;
var REGEXP_DATA_URL_JPEG = /^data:image\/jpeg;base64,/;
var REGEXP_TAG_NAME = /^img|canvas$/i;
// Misc
// Inspired by the default width and height of a canvas element.
var MIN_CONTAINER_WIDTH = 200;
var MIN_CONTAINER_HEIGHT = 100;
var DEFAULTS = {
// 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 initial aspect ratio of the crop box
initialAspectRatio: NaN,
// 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: MIN_CONTAINER_WIDTH,
minContainerHeight: MIN_CONTAINER_HEIGHT,
// Shortcuts of events
ready: null,
cropstart: null,
cropmove: null,
cropend: null,
crop: null,
zoom: null
};
var TEMPLATE = '<div class="cropper-container" touch-action="none">' + '<div class="cropper-wrap-box">' + '<div class="cropper-canvas"></div>' + '</div>' + '<div class="cropper-drag-box"></div>' + '<div class="cropper-crop-box">' + '<span class="cropper-view-box"></span>' + '<span class="cropper-dashed dashed-h"></span>' + '<span class="cropper-dashed dashed-v"></span>' + '<span class="cropper-center"></span>' + '<span class="cropper-face"></span>' + '<span class="cropper-line line-e" data-cropper-action="e"></span>' + '<span class="cropper-line line-n" data-cropper-action="n"></span>' + '<span class="cropper-line line-w" data-cropper-action="w"></span>' + '<span class="cropper-line line-s" data-cropper-action="s"></span>' + '<span class="cropper-point point-e" data-cropper-action="e"></span>' + '<span class="cropper-point point-n" data-cropper-action="n"></span>' + '<span class="cropper-point point-w" data-cropper-action="w"></span>' + '<span class="cropper-point point-s" data-cropper-action="s"></span>' + '<span class="cropper-point point-ne" data-cropper-action="ne"></span>' + '<span class="cropper-point point-nw" data-cropper-action="nw"></span>' + '<span class="cropper-point point-sw" data-cropper-action="sw"></span>' + '<span class="cropper-point point-se" data-cropper-action="se"></span>' + '</div>' + '</div>';
/**
* Check if the given value is not a number.
*/
var 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`.
*/
function isNumber(value) {
return typeof value === 'number' && !isNaN(value);
}
/**
* Check if the given value is a positive number.
* @param {*} value - The value to check.
* @returns {boolean} Returns `true` if the given value is a positive number, else `false`.
*/
var isPositiveNumber = function isPositiveNumber(value) {
return value > 0 && value < Infinity;
};
/**
* 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`.
*/
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`.
*/
function isObject(value) {
return _typeof(value) === 'object' && value !== null;
}
var hasOwnProperty = Object.prototype.hasOwnProperty;
/**
* 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`.
*/
function isPlainObject(value) {
if (!isObject(value)) {
return false;
}
try {
var _constructor = value.constructor;
var prototype = _constructor.prototype;
return _constructor && prototype && hasOwnProperty.call(prototype, 'isPrototypeOf');
} catch (error) {
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`.
*/
function isFunction(value) {
return typeof value === 'function';
}
var slice = Array.prototype.slice;
/**
* Convert array-like or iterable object to an array.
* @param {*} value - The value to convert.
* @returns {Array} Returns a new array.
*/
function toArray(value) {
return Array.from ? Array.from(value) : slice.call(value);
}
/**
* Iterate the given data.
* @param {*} data - The data to iterate.
* @param {Function} callback - The process function for each element.
* @returns {*} The original data.
*/
function forEach(data, callback) {
if (data && isFunction(callback)) {
if (Array.isArray(data) || isNumber(data.length) /* array-like */) {
toArray(data).forEach(function (value, key) {
callback.call(data, value, key, data);
});
} else if (isObject(data)) {
Object.keys(data).forEach(function (key) {
callback.call(data, data[key], key, data);
});
}
}
return data;
}
/**
* Extend the given object.
* @param {*} target - The target object to extend.
* @param {*} args - The rest objects for merging to the target object.
* @returns {Object} The extended object.
*/
var assign = Object.assign || function assign(target) {
for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
args[_key - 1] = arguments[_key];
}
if (isObject(target) && args.length > 0) {
args.forEach(function (arg) {
if (isObject(arg)) {
Object.keys(arg).forEach(function (key) {
target[key] = arg[key];
});
}
});
}
return target;
};
var REGEXP_DECIMALS = /\.\d*(?:0|9){12}\d*$/;
/**
* Normalize decimal number.
* Check out {@link https://0.30000000000000004.com/}
* @param {number} value - The value to normalize.
* @param {number} [times=100000000000] - The times for normalizing.
* @returns {number} Returns the normalized number.
*/
function normalizeDecimalNumber(value) {
var times = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 100000000000;
return REGEXP_DECIMALS.test(value) ? Math.round(value * times) / times : value;
}
var 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.
*/
function setStyle(element, styles) {
var style = element.style;
forEach(styles, function (value, property) {
if (REGEXP_SUFFIX.test(property) && isNumber(value)) {
value = "".concat(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.
*/
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.
*/
function addClass(element, value) {
if (!value) {
return;
}
if (isNumber(element.length)) {
forEach(element, function (elem) {
addClass(elem, value);
});
return;
}
if (element.classList) {
element.classList.add(value);
return;
}
var className = element.className.trim();
if (!className) {
element.className = value;
} else if (className.indexOf(value) < 0) {
element.className = "".concat(className, " ").concat(value);
}
}
/**
* Remove classes from the given element.
* @param {Element} element - The target element.
* @param {string} value - The classes to be removed.
*/
function removeClass(element, value) {
if (!value) {
return;
}
if (isNumber(element.length)) {
forEach(element, function (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.
*/
function toggleClass(element, value, added) {
if (!value) {
return;
}
if (isNumber(element.length)) {
forEach(element, function (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);
}
}
var REGEXP_CAMEL_CASE = /([a-z\d])([A-Z])/g;
/**
* Transform the given string from camelCase to kebab-case
* @param {string} value - The value to transform.
* @returns {string} The transformed value.
*/
function toParamCase(value) {
return value.replace(REGEXP_CAMEL_CASE, '$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.
*/
function getData(element, name) {
if (isObject(element[name])) {
return element[name];
}
if (element.dataset) {
return element.dataset[name];
}
return element.getAttribute("data-".concat(toParamCase(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.
*/
function setData(element, name, data) {
if (isObject(data)) {
element[name] = data;
} else if (element.dataset) {
element.dataset[name] = data;
} else {
element.setAttribute("data-".concat(toParamCase(name)), data);
}
}
/**
* Remove data from the given element.
* @param {Element} element - The target element.
* @param {string} name - The data key to remove.
*/
function removeData(element, name) {
if (isObject(element[name])) {
try {
delete element[name];
} catch (error) {
element[name] = undefined;
}
} else if (element.dataset) {
// #128 Safari not allows to delete dataset property
try {
delete element.dataset[name];
} catch (error) {
element.dataset[name] = undefined;
}
} else {
element.removeAttribute("data-".concat(toParamCase(name)));
}
}
var REGEXP_SPACES = /\s\s*/;
var onceSupported = function () {
var supported = false;
if (IS_BROWSER) {
var once = false;
var listener = function listener() {};
var options = Object.defineProperty({}, 'once', {
get: function get() {
supported = true;
return once;
},
/**
* This setter can fix a `TypeError` in strict mode
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Getter_only}
* @param {boolean} value - The value to set
*/
set: function set(value) {
once = value;
}
});
WINDOW.addEventListener('test', listener, options);
WINDOW.removeEventListener('test', listener, options);
}
return supported;
}();
/**
* 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.
*/
function removeListener(element, type, listener) {
var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
var handler = listener;
type.trim().split(REGEXP_SPACES).forEach(function (event) {
if (!onceSupported) {
var listeners = element.listeners;
if (listeners && listeners[event] && listeners[event][listener]) {
handler = listeners[event][listener];
delete listeners[event][listener];
if (Object.keys(listeners[event]).length === 0) {
delete listeners[event];
}
if (Object.keys(listeners).length === 0) {
delete element.listeners;
}
}
}
element.removeEventListener(event, handler, options);
});
}
/**
* 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.
*/
function addListener(element, type, listener) {
var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
var _handler = listener;
type.trim().split(REGEXP_SPACES).forEach(function (event) {
if (options.once && !onceSupported) {
var _element$listeners = element.listeners,
listeners = _element$listeners === void 0 ? {} : _element$listeners;
_handler = function handler() {
delete listeners[event][listener];
element.removeEventListener(event, _handler, options);
for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
args[_key2] = arguments[_key2];
}
listener.apply(element, args);
};
if (!listeners[event]) {
listeners[event] = {};
}
if (listeners[event][listener]) {
element.removeEventListener(event, listeners[event][listener], options);
}
listeners[event][listener] = _handler;
element.listeners = listeners;
}
element.addEventListener(event, _handler, options);
});
}
/**
* 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.
*/
function dispatchEvent(element, type, data) {
var event;
// Event and CustomEvent on IE9-11 are global objects, not constructors
if (isFunction(Event) && isFunction(CustomEvent)) {
event = new CustomEvent(type, {
detail: data,
bubbles: true,
cancelable: true
});
} else {
event = document.createEvent('CustomEvent');
event.initCustomEvent(type, true, true, data);
}
return element.dispatchEvent(event);
}
/**
* Get the offset base on the document.
* @param {Element} element - The target element.
* @returns {Object} The offset data.
*/
function getOffset(element) {
var box = element.getBoundingClientRect();
return {
left: box.left + (window.pageXOffset - document.documentElement.clientLeft),
top: box.top + (window.pageYOffset - document.documentElement.clientTop)
};
}
var location = WINDOW.location;
var REGEXP_ORIGINS = /^(\w+:)\/\/([^:/?#]*):?(\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`.
*/
function isCrossOriginURL(url) {
var parts = url.match(REGEXP_ORIGINS);
return parts !== null && (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.
*/
function addTimestamp(url) {
var timestamp = "timestamp=".concat(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.
*/
function getTransforms(_ref) {
var rotate = _ref.rotate,
scaleX = _ref.scaleX,
scaleY = _ref.scaleY,
translateX = _ref.translateX,
translateY = _ref.translateY;
var values = [];
if (isNumber(translateX) && translateX !== 0) {
values.push("translateX(".concat(translateX, "px)"));
}
if (isNumber(translateY) && translateY !== 0) {
values.push("translateY(".concat(translateY, "px)"));
}
// Rotate should come first before scale to match orientation transform
if (isNumber(rotate) && rotate !== 0) {
values.push("rotate(".concat(rotate, "deg)"));
}
if (isNumber(scaleX) && scaleX !== 1) {
values.push("scaleX(".concat(scaleX, ")"));
}
if (isNumber(scaleY) && scaleY !== 1) {
values.push("scaleY(".concat(scaleY, ")"));
}
var transform = values.length ? values.join(' ') : 'none';
return {
WebkitTransform: transform,
msTransform: transform,
transform: transform
};
}
/**
* Get the max ratio of a group of pointers.
* @param {string} pointers - The target pointers.
* @returns {number} The result ratio.
*/
function getMaxZoomRatio(pointers) {
var pointers2 = _objectSpread2({}, pointers);
var maxRatio = 0;
forEach(pointers, function (pointer, pointerId) {
delete pointers2[pointerId];
forEach(pointers2, function (pointer2) {
var x1 = Math.abs(pointer.startX - pointer2.startX);
var y1 = Math.abs(pointer.startY - pointer2.startY);
var x2 = Math.abs(pointer.endX - pointer2.endX);
var y2 = Math.abs(pointer.endY - pointer2.endY);
var z1 = Math.sqrt(x1 * x1 + y1 * y1);
var z2 = Math.sqrt(x2 * x2 + y2 * y2);
var ratio = (z2 - z1) / z1;
if (Math.abs(ratio) > Math.abs(maxRatio)) {
maxRatio = ratio;
}
});
});
return maxRatio;
}
/**
* 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.
*/
function getPointer(_ref2, endOnly) {
var pageX = _ref2.pageX,
pageY = _ref2.pageY;
var end = {
endX: pageX,
endY: pageY
};
return endOnly ? end : _objectSpread2({
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.
*/
function getPointersCenter(pointers) {
var pageX = 0;
var pageY = 0;
var count = 0;
forEach(pointers, function (_ref3) {
var startX = _ref3.startX,
startY = _ref3.startY;
pageX += startX;
pageY += startY;
count += 1;
});
pageX /= count;
pageY /= count;
return {
pageX: pageX,
pageY: pageY
};
}
/**
* 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.
*/
function getAdjustedSizes(_ref4) {
var aspectRatio = _ref4.aspectRatio,
height = _ref4.height,
width = _ref4.width;
var type = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'contain';
var isValidWidth = isPositiveNumber(width);
var isValidHeight = isPositiveNumber(height);
if (isValidWidth && isValidHeight) {
var adjustedWidth = height * aspectRatio;
if (type === 'contain' && adjustedWidth > width || type === 'cover' && adjustedWidth < width) {
height = width / aspectRatio;
} else {
width = height * aspectRatio;
}
} else if (isValidWidth) {
height = width / aspectRatio;
} else if (isValidHeight) {
width = height * aspectRatio;
}
return {
width: width,
height: height
};
}
/**
* Get the new sizes of a rectangle after rotated.
* @param {Object} data - The original sizes.
* @returns {Object} The result sizes.
*/
function getRotatedSizes(_ref5) {
var width = _ref5.width,
height = _ref5.height,
degree = _ref5.degree;
degree = Math.abs(degree) % 180;
if (degree === 90) {
return {
width: height,
height: width
};
}
var arc = degree % 90 * Math.PI / 180;
var sinArc = Math.sin(arc);
var cosArc = Math.cos(arc);
var newWidth = width * cosArc + height * sinArc;
var 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.
*/
function getSourceCanvas(image, _ref6, _ref7, _ref8) {
var imageAspectRatio = _ref6.aspectRatio,
imageNaturalWidth = _ref6.naturalWidth,
imageNaturalHeight = _ref6.naturalHeight,
_ref6$rotate = _ref6.rotate,
rotate = _ref6$rotate === void 0 ? 0 : _ref6$rotate,
_ref6$scaleX = _ref6.scaleX,
scaleX = _ref6$scaleX === void 0 ? 1 : _ref6$scaleX,
_ref6$scaleY = _ref6.scaleY,
scaleY = _ref6$scaleY === void 0 ? 1 : _ref6$scaleY;
var aspectRatio = _ref7.aspectRatio,
naturalWidth = _ref7.naturalWidth,
naturalHeight = _ref7.naturalHeight;
var _ref8$fillColor = _ref8.fillColor,
fillColor = _ref8$fillColor === void 0 ? 'transparent' : _ref8$fillColor,
_ref8$imageSmoothingE = _ref8.imageSmoothingEnabled,
imageSmoothingEnabled = _ref8$imageSmoothingE === void 0 ? true : _ref8$imageSmoothingE,
_ref8$imageSmoothingQ = _ref8.imageSmoothingQuality,
imageSmoothingQuality = _ref8$imageSmoothingQ === void 0 ? 'low' : _ref8$imageSmoothingQ,
_ref8$maxWidth = _ref8.maxWidth,
maxWidth = _ref8$maxWidth === void 0 ? Infinity : _ref8$maxWidth,
_ref8$maxHeight = _ref8.maxHeight,
maxHeight = _ref8$maxHeight === void 0 ? Infinity : _ref8$maxHeight,
_ref8$minWidth = _ref8.minWidth,
minWidth = _ref8$minWidth === void 0 ? 0 : _ref8$minWidth,
_ref8$minHeight = _ref8.minHeight,
minHeight = _ref8$minHeight === void 0 ? 0 : _ref8$minHeight;
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
var maxSizes = getAdjustedSizes({
aspectRatio: aspectRatio,
width: maxWidth,
height: maxHeight
});
var minSizes = getAdjustedSizes({
aspectRatio: aspectRatio,
width: minWidth,
height: minHeight
}, 'cover');
var width = Math.min(maxSizes.width, Math.max(minSizes.width, naturalWidth));
var height = Math.min(maxSizes.height, Math.max(minSizes.height, naturalHeight));
// Note: should always use image's natural sizes for drawing as
// imageData.naturalWidth === canvasData.naturalHeight when rotate % 180 === 90
var destMaxSizes = getAdjustedSizes({
aspectRatio: imageAspectRatio,
width: maxWidth,
height: maxHeight
});
var destMinSizes = getAdjustedSizes({
aspectRatio: imageAspectRatio,
width: minWidth,
height: minHeight
}, 'cover');
var destWidth = Math.min(destMaxSizes.width, Math.max(destMinSizes.width, imageNaturalWidth));
var destHeight = Math.min(destMaxSizes.height, Math.max(destMinSizes.height, imageNaturalHeight));
var params = [-destWidth / 2, -destHeight / 2, destWidth, destHeight];
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.apply(context, [image].concat(_toConsumableArray(params.map(function (param) {
return Math.floor(normalizeDecimalNumber(param));
}))));
context.restore();
return canvas;
}
var fromCharCode = String.fromCharCode;
/**
* 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.
*/
function getStringFromCharCode(dataView, start, length) {
var str = '';
length += start;
for (var i = start; i < length; i += 1) {
str += fromCharCode(dataView.getUint8(i));
}
return str;
}
var 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.
*/
function dataURLToArrayBuffer(dataURL) {
var base64 = dataURL.replace(REGEXP_DATA_URL_HEAD, '');
var binary = atob(base64);
var arrayBuffer = new ArrayBuffer(binary.length);
var uint8 = new Uint8Array(arrayBuffer);
forEach(uint8, function (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.
*/
function arrayBufferToDataURL(arrayBuffer, mimeType) {
var chunks = [];
// Chunk Typed Array for better performance (#435)
var chunkSize = 8192;
var uint8 = new Uint8Array(arrayBuffer);
while (uint8.length > 0) {
// XXX: Babel's `toConsumableArray` helper will throw error in IE or Safari 9