konva
Version:
<p align="center"> <img src="https://raw.githubusercontent.com/konvajs/konvajs.github.io/master/apple-touch-icon-180x180.png" alt="Konva logo" height="180" /> </p>
1,453 lines (1,442 loc) • 557 kB
JavaScript
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = global || self, global.Konva = factory());
}(this, function () { 'use strict';
/*
* Konva JavaScript Framework v@@version
* http://konvajs.org/
* Licensed under the MIT
* Date: @@date
*
* Original work Copyright (C) 2011 - 2013 by Eric Rowell (KineticJS)
* Modified work Copyright (C) 2014 - present by Anton Lavrenov (Konva)
*
* @license
*/
var PI_OVER_180 = Math.PI / 180;
/**
* @namespace Konva
*/
var version = '@@version';
var isBrowser = typeof window !== 'undefined' &&
// browser case
({}.toString.call(window) === '[object Window]' ||
// electron case
{}.toString.call(window) === '[object global]');
var isUnminified = /comment/.test(function () {
/* comment */
}.toString());
var dblClickWindow = 400;
var getAngle = function (angle) {
return getGlobalKonva().angleDeg ? angle * PI_OVER_180 : angle;
};
var _detectIE = function (ua) {
var msie = ua.indexOf('msie ');
if (msie > 0) {
// IE 10 or older => return version number
return parseInt(ua.substring(msie + 5, ua.indexOf('.', msie)), 10);
}
var trident = ua.indexOf('trident/');
if (trident > 0) {
// IE 11 => return version number
var rv = ua.indexOf('rv:');
return parseInt(ua.substring(rv + 3, ua.indexOf('.', rv)), 10);
}
var edge = ua.indexOf('edge/');
if (edge > 0) {
// Edge (IE 12+) => return version number
return parseInt(ua.substring(edge + 5, ua.indexOf('.', edge)), 10);
}
// other browser
return false;
};
var _parseUA = function (userAgent) {
var ua = userAgent.toLowerCase(),
// jQuery UA regex
match = /(chrome)[ /]([\w.]+)/.exec(ua) ||
/(webkit)[ /]([\w.]+)/.exec(ua) ||
/(opera)(?:.*version|)[ /]([\w.]+)/.exec(ua) ||
/(msie) ([\w.]+)/.exec(ua) ||
(ua.indexOf('compatible') < 0 &&
/(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua)) ||
[],
// adding mobile flag as well
mobile = !!userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile/i), ieMobile = !!userAgent.match(/IEMobile/i);
return {
browser: match[1] || '',
version: match[2] || '0',
isIE: _detectIE(ua),
// adding mobile flab
mobile: mobile,
ieMobile: ieMobile // If this is true (i.e., WP8), then Konva touch events are executed instead of equivalent Konva mouse events
};
};
var glob = typeof global !== 'undefined'
? global
: typeof window !== 'undefined'
? window
: typeof WorkerGlobalScope !== 'undefined'
? self
: {};
// user agent
var UA = _parseUA((glob.navigator && glob.navigator.userAgent) || '');
var document = glob.document;
var getGlobalKonva = function () {
return glob.Konva;
};
/**
* Collection constructor. Collection extends Array.
* This class is used in conjunction with {@link Konva.Container#find}
* The good thing about collection is that it has ALL methods of all Konva nodes. Take a look into examples.
* @constructor
* @memberof Konva
* @example
*
* // find all rectangles and return them as Collection
* const shapes = layer.find('Rect');
* // fill all rectangles with a single function
* shapes.fill('red');
*/
var Collection = /** @class */ (function () {
function Collection() {
}
/**
* convert array into a collection
* @method
* @memberof Konva.Collection
* @param {Array} arr
*/
Collection.toCollection = function (arr) {
var collection = new Collection(), len = arr.length, n;
for (n = 0; n < len; n++) {
collection.push(arr[n]);
}
return collection;
};
Collection._mapMethod = function (methodName) {
Collection.prototype[methodName] = function () {
var len = this.length, i;
var args = [].slice.call(arguments);
for (i = 0; i < len; i++) {
this[i][methodName].apply(this[i], args);
}
return this;
};
};
Collection.mapMethods = function (constructor) {
var prot = constructor.prototype;
for (var methodName in prot) {
Collection._mapMethod(methodName);
}
};
return Collection;
}());
Collection.prototype = [];
/**
* iterate through node array and run a function for each node.
* The node and index is passed into the function
* @method
* @name Konva.Collection#each
* @param {Function} func
* @example
* // get all nodes with name foo inside layer, and set x to 10 for each
* layer.find('.foo').each(function(shape, n) {
* shape.setX(10);
* });
*/
Collection.prototype.each = function (func) {
for (var n = 0; n < this.length; n++) {
func(this[n], n);
}
};
/**
* convert collection into an array
* @method
* @name Konva.Collection#toArray
*/
Collection.prototype.toArray = function () {
var arr = [], len = this.length, n;
for (n = 0; n < len; n++) {
arr.push(this[n]);
}
return arr;
};
/*
* Last updated November 2011
* By Simon Sarris
* www.simonsarris.com
* sarris@acm.org
*
* Free to use and distribute at will
* So long as you are nice to people, etc
*/
/*
* The usage of this class was inspired by some of the work done by a forked
* project, KineticJS-Ext by Wappworks, which is based on Simon's Transform
* class. Modified by Eric Rowell
*/
/**
* Transform constructor.
* In most of the cases you don't need to use it in your app. Because it is for internal usage in Konva core.
* But there is a documentation for that class in case you still want
* to make some manual calculations.
* @constructor
* @param {Array} [m] Optional six-element matrix
* @memberof Konva
*/
var Transform = /** @class */ (function () {
function Transform(m) {
if (m === void 0) { m = [1, 0, 0, 1, 0, 0]; }
this.m = (m && m.slice()) || [1, 0, 0, 1, 0, 0];
}
/**
* Copy Konva.Transform object
* @method
* @name Konva.Transform#copy
* @returns {Konva.Transform}
* @example
* const tr = shape.getTransform().copy()
*/
Transform.prototype.copy = function () {
return new Transform(this.m);
};
/**
* Transform point
* @method
* @name Konva.Transform#point
* @param {Object} point 2D point(x, y)
* @returns {Object} 2D point(x, y)
*/
Transform.prototype.point = function (point) {
var m = this.m;
return {
x: m[0] * point.x + m[2] * point.y + m[4],
y: m[1] * point.x + m[3] * point.y + m[5]
};
};
/**
* Apply translation
* @method
* @name Konva.Transform#translate
* @param {Number} x
* @param {Number} y
* @returns {Konva.Transform}
*/
Transform.prototype.translate = function (x, y) {
this.m[4] += this.m[0] * x + this.m[2] * y;
this.m[5] += this.m[1] * x + this.m[3] * y;
return this;
};
/**
* Apply scale
* @method
* @name Konva.Transform#scale
* @param {Number} sx
* @param {Number} sy
* @returns {Konva.Transform}
*/
Transform.prototype.scale = function (sx, sy) {
this.m[0] *= sx;
this.m[1] *= sx;
this.m[2] *= sy;
this.m[3] *= sy;
return this;
};
/**
* Apply rotation
* @method
* @name Konva.Transform#rotate
* @param {Number} rad Angle in radians
* @returns {Konva.Transform}
*/
Transform.prototype.rotate = function (rad) {
var c = Math.cos(rad);
var s = Math.sin(rad);
var m11 = this.m[0] * c + this.m[2] * s;
var m12 = this.m[1] * c + this.m[3] * s;
var m21 = this.m[0] * -s + this.m[2] * c;
var m22 = this.m[1] * -s + this.m[3] * c;
this.m[0] = m11;
this.m[1] = m12;
this.m[2] = m21;
this.m[3] = m22;
return this;
};
/**
* Returns the translation
* @method
* @name Konva.Transform#getTranslation
* @returns {Object} 2D point(x, y)
*/
Transform.prototype.getTranslation = function () {
return {
x: this.m[4],
y: this.m[5]
};
};
/**
* Apply skew
* @method
* @name Konva.Transform#skew
* @param {Number} sx
* @param {Number} sy
* @returns {Konva.Transform}
*/
Transform.prototype.skew = function (sx, sy) {
var m11 = this.m[0] + this.m[2] * sy;
var m12 = this.m[1] + this.m[3] * sy;
var m21 = this.m[2] + this.m[0] * sx;
var m22 = this.m[3] + this.m[1] * sx;
this.m[0] = m11;
this.m[1] = m12;
this.m[2] = m21;
this.m[3] = m22;
return this;
};
/**
* Transform multiplication
* @method
* @name Konva.Transform#multiply
* @param {Konva.Transform} matrix
* @returns {Konva.Transform}
*/
Transform.prototype.multiply = function (matrix) {
var m11 = this.m[0] * matrix.m[0] + this.m[2] * matrix.m[1];
var m12 = this.m[1] * matrix.m[0] + this.m[3] * matrix.m[1];
var m21 = this.m[0] * matrix.m[2] + this.m[2] * matrix.m[3];
var m22 = this.m[1] * matrix.m[2] + this.m[3] * matrix.m[3];
var dx = this.m[0] * matrix.m[4] + this.m[2] * matrix.m[5] + this.m[4];
var dy = this.m[1] * matrix.m[4] + this.m[3] * matrix.m[5] + this.m[5];
this.m[0] = m11;
this.m[1] = m12;
this.m[2] = m21;
this.m[3] = m22;
this.m[4] = dx;
this.m[5] = dy;
return this;
};
/**
* Invert the matrix
* @method
* @name Konva.Transform#invert
* @returns {Konva.Transform}
*/
Transform.prototype.invert = function () {
var d = 1 / (this.m[0] * this.m[3] - this.m[1] * this.m[2]);
var m0 = this.m[3] * d;
var m1 = -this.m[1] * d;
var m2 = -this.m[2] * d;
var m3 = this.m[0] * d;
var m4 = d * (this.m[2] * this.m[5] - this.m[3] * this.m[4]);
var m5 = d * (this.m[1] * this.m[4] - this.m[0] * this.m[5]);
this.m[0] = m0;
this.m[1] = m1;
this.m[2] = m2;
this.m[3] = m3;
this.m[4] = m4;
this.m[5] = m5;
return this;
};
/**
* return matrix
* @method
* @name Konva.Transform#getMatrix
*/
Transform.prototype.getMatrix = function () {
return this.m;
};
/**
* set to absolute position via translation
* @method
* @name Konva.Transform#setAbsolutePosition
* @returns {Konva.Transform}
* @author ericdrowell
*/
Transform.prototype.setAbsolutePosition = function (x, y) {
var m0 = this.m[0], m1 = this.m[1], m2 = this.m[2], m3 = this.m[3], m4 = this.m[4], m5 = this.m[5], yt = (m0 * (y - m5) - m1 * (x - m4)) / (m0 * m3 - m1 * m2), xt = (x - m4 - m2 * yt) / m0;
return this.translate(xt, yt);
};
return Transform;
}());
// CONSTANTS
var OBJECT_ARRAY = '[object Array]', OBJECT_NUMBER = '[object Number]', OBJECT_STRING = '[object String]', OBJECT_BOOLEAN = '[object Boolean]', PI_OVER_DEG180 = Math.PI / 180, DEG180_OVER_PI = 180 / Math.PI, HASH = '#', EMPTY_STRING = '', ZERO = '0', KONVA_WARNING = 'Konva warning: ', KONVA_ERROR = 'Konva error: ', RGB_PAREN = 'rgb(', COLORS = {
aliceblue: [240, 248, 255],
antiquewhite: [250, 235, 215],
aqua: [0, 255, 255],
aquamarine: [127, 255, 212],
azure: [240, 255, 255],
beige: [245, 245, 220],
bisque: [255, 228, 196],
black: [0, 0, 0],
blanchedalmond: [255, 235, 205],
blue: [0, 0, 255],
blueviolet: [138, 43, 226],
brown: [165, 42, 42],
burlywood: [222, 184, 135],
cadetblue: [95, 158, 160],
chartreuse: [127, 255, 0],
chocolate: [210, 105, 30],
coral: [255, 127, 80],
cornflowerblue: [100, 149, 237],
cornsilk: [255, 248, 220],
crimson: [220, 20, 60],
cyan: [0, 255, 255],
darkblue: [0, 0, 139],
darkcyan: [0, 139, 139],
darkgoldenrod: [184, 132, 11],
darkgray: [169, 169, 169],
darkgreen: [0, 100, 0],
darkgrey: [169, 169, 169],
darkkhaki: [189, 183, 107],
darkmagenta: [139, 0, 139],
darkolivegreen: [85, 107, 47],
darkorange: [255, 140, 0],
darkorchid: [153, 50, 204],
darkred: [139, 0, 0],
darksalmon: [233, 150, 122],
darkseagreen: [143, 188, 143],
darkslateblue: [72, 61, 139],
darkslategray: [47, 79, 79],
darkslategrey: [47, 79, 79],
darkturquoise: [0, 206, 209],
darkviolet: [148, 0, 211],
deeppink: [255, 20, 147],
deepskyblue: [0, 191, 255],
dimgray: [105, 105, 105],
dimgrey: [105, 105, 105],
dodgerblue: [30, 144, 255],
firebrick: [178, 34, 34],
floralwhite: [255, 255, 240],
forestgreen: [34, 139, 34],
fuchsia: [255, 0, 255],
gainsboro: [220, 220, 220],
ghostwhite: [248, 248, 255],
gold: [255, 215, 0],
goldenrod: [218, 165, 32],
gray: [128, 128, 128],
green: [0, 128, 0],
greenyellow: [173, 255, 47],
grey: [128, 128, 128],
honeydew: [240, 255, 240],
hotpink: [255, 105, 180],
indianred: [205, 92, 92],
indigo: [75, 0, 130],
ivory: [255, 255, 240],
khaki: [240, 230, 140],
lavender: [230, 230, 250],
lavenderblush: [255, 240, 245],
lawngreen: [124, 252, 0],
lemonchiffon: [255, 250, 205],
lightblue: [173, 216, 230],
lightcoral: [240, 128, 128],
lightcyan: [224, 255, 255],
lightgoldenrodyellow: [250, 250, 210],
lightgray: [211, 211, 211],
lightgreen: [144, 238, 144],
lightgrey: [211, 211, 211],
lightpink: [255, 182, 193],
lightsalmon: [255, 160, 122],
lightseagreen: [32, 178, 170],
lightskyblue: [135, 206, 250],
lightslategray: [119, 136, 153],
lightslategrey: [119, 136, 153],
lightsteelblue: [176, 196, 222],
lightyellow: [255, 255, 224],
lime: [0, 255, 0],
limegreen: [50, 205, 50],
linen: [250, 240, 230],
magenta: [255, 0, 255],
maroon: [128, 0, 0],
mediumaquamarine: [102, 205, 170],
mediumblue: [0, 0, 205],
mediumorchid: [186, 85, 211],
mediumpurple: [147, 112, 219],
mediumseagreen: [60, 179, 113],
mediumslateblue: [123, 104, 238],
mediumspringgreen: [0, 250, 154],
mediumturquoise: [72, 209, 204],
mediumvioletred: [199, 21, 133],
midnightblue: [25, 25, 112],
mintcream: [245, 255, 250],
mistyrose: [255, 228, 225],
moccasin: [255, 228, 181],
navajowhite: [255, 222, 173],
navy: [0, 0, 128],
oldlace: [253, 245, 230],
olive: [128, 128, 0],
olivedrab: [107, 142, 35],
orange: [255, 165, 0],
orangered: [255, 69, 0],
orchid: [218, 112, 214],
palegoldenrod: [238, 232, 170],
palegreen: [152, 251, 152],
paleturquoise: [175, 238, 238],
palevioletred: [219, 112, 147],
papayawhip: [255, 239, 213],
peachpuff: [255, 218, 185],
peru: [205, 133, 63],
pink: [255, 192, 203],
plum: [221, 160, 203],
powderblue: [176, 224, 230],
purple: [128, 0, 128],
rebeccapurple: [102, 51, 153],
red: [255, 0, 0],
rosybrown: [188, 143, 143],
royalblue: [65, 105, 225],
saddlebrown: [139, 69, 19],
salmon: [250, 128, 114],
sandybrown: [244, 164, 96],
seagreen: [46, 139, 87],
seashell: [255, 245, 238],
sienna: [160, 82, 45],
silver: [192, 192, 192],
skyblue: [135, 206, 235],
slateblue: [106, 90, 205],
slategray: [119, 128, 144],
slategrey: [119, 128, 144],
snow: [255, 255, 250],
springgreen: [0, 255, 127],
steelblue: [70, 130, 180],
tan: [210, 180, 140],
teal: [0, 128, 128],
thistle: [216, 191, 216],
transparent: [255, 255, 255, 0],
tomato: [255, 99, 71],
turquoise: [64, 224, 208],
violet: [238, 130, 238],
wheat: [245, 222, 179],
white: [255, 255, 255],
whitesmoke: [245, 245, 245],
yellow: [255, 255, 0],
yellowgreen: [154, 205, 5]
}, RGB_REGEX = /rgb\((\d{1,3}),(\d{1,3}),(\d{1,3})\)/, animQueue = [];
/**
* @namespace Util
* @memberof Konva
*/
var Util = {
/*
* cherry-picked utilities from underscore.js
*/
_isElement: function (obj) {
return !!(obj && obj.nodeType == 1);
},
_isFunction: function (obj) {
return !!(obj && obj.constructor && obj.call && obj.apply);
},
_isPlainObject: function (obj) {
return !!obj && obj.constructor === Object;
},
_isArray: function (obj) {
return Object.prototype.toString.call(obj) === OBJECT_ARRAY;
},
_isNumber: function (obj) {
return (Object.prototype.toString.call(obj) === OBJECT_NUMBER &&
!isNaN(obj) &&
isFinite(obj));
},
_isString: function (obj) {
return Object.prototype.toString.call(obj) === OBJECT_STRING;
},
_isBoolean: function (obj) {
return Object.prototype.toString.call(obj) === OBJECT_BOOLEAN;
},
// arrays are objects too
isObject: function (val) {
return val instanceof Object;
},
isValidSelector: function (selector) {
if (typeof selector !== 'string') {
return false;
}
var firstChar = selector[0];
return (firstChar === '#' ||
firstChar === '.' ||
firstChar === firstChar.toUpperCase());
},
_sign: function (number) {
if (number === 0) {
return 0;
}
if (number > 0) {
return 1;
}
else {
return -1;
}
},
requestAnimFrame: function (callback) {
animQueue.push(callback);
if (animQueue.length === 1) {
requestAnimationFrame(function () {
var queue = animQueue;
animQueue = [];
queue.forEach(function (cb) {
cb();
});
});
}
},
createCanvasElement: function () {
var canvas = isBrowser
? document.createElement('canvas')
: new (getGlobalKonva()._nodeCanvas())();
// on some environments canvas.style is readonly
try {
canvas.style = canvas.style || {};
}
catch (e) { }
return canvas;
},
createImageElement: function () {
return document.createElement('img');
},
_isInDocument: function (el) {
while ((el = el.parentNode)) {
if (el == document) {
return true;
}
}
return false;
},
_simplifyArray: function (arr) {
var retArr = [], len = arr.length, util = Util, n, val;
for (n = 0; n < len; n++) {
val = arr[n];
if (util._isNumber(val)) {
val = Math.round(val * 1000) / 1000;
}
else if (!util._isString(val)) {
val = val.toString();
}
retArr.push(val);
}
return retArr;
},
/*
* arg can be an image object or image data
*/
_urlToImage: function (url, callback) {
// if arg is a string, then it's a data url
var imageObj = new glob.Image();
imageObj.onload = function () {
callback(imageObj);
};
imageObj.src = url;
},
_rgbToHex: function (r, g, b) {
return ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
},
_hexToRgb: function (hex) {
hex = hex.replace(HASH, EMPTY_STRING);
var bigint = parseInt(hex, 16);
return {
r: (bigint >> 16) & 255,
g: (bigint >> 8) & 255,
b: bigint & 255
};
},
/**
* return random hex color
* @method
* @memberof Konva.Util
* @example
* shape.fill(Konva.Util.getRandomColor());
*/
getRandomColor: function () {
var randColor = ((Math.random() * 0xffffff) << 0).toString(16);
while (randColor.length < 6) {
randColor = ZERO + randColor;
}
return HASH + randColor;
},
get: function (val, def) {
if (val === undefined) {
return def;
}
else {
return val;
}
},
/**
* get RGB components of a color
* @method
* @memberof Konva.Util
* @param {String} color
* @example
* // each of the following examples return {r:0, g:0, b:255}
* var rgb = Konva.Util.getRGB('blue');
* var rgb = Konva.Util.getRGB('#0000ff');
* var rgb = Konva.Util.getRGB('rgb(0,0,255)');
*/
getRGB: function (color) {
var rgb;
// color string
if (color in COLORS) {
rgb = COLORS[color];
return {
r: rgb[0],
g: rgb[1],
b: rgb[2]
};
}
else if (color[0] === HASH) {
// hex
return this._hexToRgb(color.substring(1));
}
else if (color.substr(0, 4) === RGB_PAREN) {
// rgb string
rgb = RGB_REGEX.exec(color.replace(/ /g, ''));
return {
r: parseInt(rgb[1], 10),
g: parseInt(rgb[2], 10),
b: parseInt(rgb[3], 10)
};
}
else {
// default
return {
r: 0,
g: 0,
b: 0
};
}
},
// convert any color string to RGBA object
// from https://github.com/component/color-parser
colorToRGBA: function (str) {
str = str || 'black';
return (Util._namedColorToRBA(str) ||
Util._hex3ColorToRGBA(str) ||
Util._hex6ColorToRGBA(str) ||
Util._rgbColorToRGBA(str) ||
Util._rgbaColorToRGBA(str));
},
// Parse named css color. Like "green"
_namedColorToRBA: function (str) {
var c = COLORS[str.toLowerCase()];
if (!c) {
return null;
}
return {
r: c[0],
g: c[1],
b: c[2],
a: 1
};
},
// Parse rgb(n, n, n)
_rgbColorToRGBA: function (str) {
if (str.indexOf('rgb(') === 0) {
str = str.match(/rgb\(([^)]+)\)/)[1];
var parts = str.split(/ *, */).map(Number);
return {
r: parts[0],
g: parts[1],
b: parts[2],
a: 1
};
}
},
// Parse rgba(n, n, n, n)
_rgbaColorToRGBA: function (str) {
if (str.indexOf('rgba(') === 0) {
str = str.match(/rgba\(([^)]+)\)/)[1];
var parts = str.split(/ *, */).map(Number);
return {
r: parts[0],
g: parts[1],
b: parts[2],
a: parts[3]
};
}
},
// Parse #nnnnnn
_hex6ColorToRGBA: function (str) {
if (str[0] === '#' && str.length === 7) {
return {
r: parseInt(str.slice(1, 3), 16),
g: parseInt(str.slice(3, 5), 16),
b: parseInt(str.slice(5, 7), 16),
a: 1
};
}
},
// Parse #nnn
_hex3ColorToRGBA: function (str) {
if (str[0] === '#' && str.length === 4) {
return {
r: parseInt(str[1] + str[1], 16),
g: parseInt(str[2] + str[2], 16),
b: parseInt(str[3] + str[3], 16),
a: 1
};
}
},
/**
* check intersection of two client rectangles
* @method
* @memberof Konva.Util
* @param {Object} r1 - { x, y, width, height } client rectangle
* @param {Object} r2 - { x, y, width, height } client rectangle
* @example
* const overlapping = Konva.Util.haveIntersection(shape1.getClientRect(), shape2.getClientRect());
*/
haveIntersection: function (r1, r2) {
return !(r2.x > r1.x + r1.width ||
r2.x + r2.width < r1.x ||
r2.y > r1.y + r1.height ||
r2.y + r2.height < r1.y);
},
cloneObject: function (obj) {
var retObj = {};
for (var key in obj) {
if (this._isPlainObject(obj[key])) {
retObj[key] = this.cloneObject(obj[key]);
}
else if (this._isArray(obj[key])) {
retObj[key] = this.cloneArray(obj[key]);
}
else {
retObj[key] = obj[key];
}
}
return retObj;
},
cloneArray: function (arr) {
return arr.slice(0);
},
_degToRad: function (deg) {
return deg * PI_OVER_DEG180;
},
_radToDeg: function (rad) {
return rad * DEG180_OVER_PI;
},
_capitalize: function (str) {
return str.charAt(0).toUpperCase() + str.slice(1);
},
throw: function (str) {
throw new Error(KONVA_ERROR + str);
},
error: function (str) {
console.error(KONVA_ERROR + str);
},
warn: function (str) {
if (!getGlobalKonva().showWarnings) {
return;
}
console.warn(KONVA_WARNING + str);
},
extend: function (child, parent) {
function Ctor() {
this.constructor = child;
}
Ctor.prototype = parent.prototype;
var oldProto = child.prototype;
child.prototype = new Ctor();
for (var key in oldProto) {
if (oldProto.hasOwnProperty(key)) {
child.prototype[key] = oldProto[key];
}
}
child.__super__ = parent.prototype;
// create reference to parent
child.super = parent;
},
_getControlPoints: function (x0, y0, x1, y1, x2, y2, t) {
var d01 = Math.sqrt(Math.pow(x1 - x0, 2) + Math.pow(y1 - y0, 2)), d12 = Math.sqrt(Math.pow(x2 - x1, 2) + Math.pow(y2 - y1, 2)), fa = (t * d01) / (d01 + d12), fb = (t * d12) / (d01 + d12), p1x = x1 - fa * (x2 - x0), p1y = y1 - fa * (y2 - y0), p2x = x1 + fb * (x2 - x0), p2y = y1 + fb * (y2 - y0);
return [p1x, p1y, p2x, p2y];
},
_expandPoints: function (p, tension) {
var len = p.length, allPoints = [], n, cp;
for (n = 2; n < len - 2; n += 2) {
cp = Util._getControlPoints(p[n - 2], p[n - 1], p[n], p[n + 1], p[n + 2], p[n + 3], tension);
allPoints.push(cp[0]);
allPoints.push(cp[1]);
allPoints.push(p[n]);
allPoints.push(p[n + 1]);
allPoints.push(cp[2]);
allPoints.push(cp[3]);
}
return allPoints;
},
each: function (obj, func) {
for (var key in obj) {
func(key, obj[key]);
}
},
_inRange: function (val, left, right) {
return left <= val && val < right;
},
_getProjectionToSegment: function (x1, y1, x2, y2, x3, y3) {
var x, y, dist;
var pd2 = (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2);
if (pd2 == 0) {
x = x1;
y = y1;
dist = (x3 - x2) * (x3 - x2) + (y3 - y2) * (y3 - y2);
}
else {
var u = ((x3 - x1) * (x2 - x1) + (y3 - y1) * (y2 - y1)) / pd2;
if (u < 0) {
x = x1;
y = y1;
dist = (x1 - x3) * (x1 - x3) + (y1 - y3) * (y1 - y3);
}
else if (u > 1.0) {
x = x2;
y = y2;
dist = (x2 - x3) * (x2 - x3) + (y2 - y3) * (y2 - y3);
}
else {
x = x1 + u * (x2 - x1);
y = y1 + u * (y2 - y1);
dist = (x - x3) * (x - x3) + (y - y3) * (y - y3);
}
}
return [x, y, dist];
},
// line as array of points.
// line might be closed
_getProjectionToLine: function (pt, line, isClosed) {
var pc = Util.cloneObject(pt);
var dist = Number.MAX_VALUE;
line.forEach(function (p1, i) {
if (!isClosed && i === line.length - 1) {
return;
}
var p2 = line[(i + 1) % line.length];
var proj = Util._getProjectionToSegment(p1.x, p1.y, p2.x, p2.y, pt.x, pt.y);
var px = proj[0], py = proj[1], pdist = proj[2];
if (pdist < dist) {
pc.x = px;
pc.y = py;
dist = pdist;
}
});
return pc;
},
_prepareArrayForTween: function (startArray, endArray, isClosed) {
var n, start = [], end = [];
if (startArray.length > endArray.length) {
var temp = endArray;
endArray = startArray;
startArray = temp;
}
for (n = 0; n < startArray.length; n += 2) {
start.push({
x: startArray[n],
y: startArray[n + 1]
});
}
for (n = 0; n < endArray.length; n += 2) {
end.push({
x: endArray[n],
y: endArray[n + 1]
});
}
var newStart = [];
end.forEach(function (point) {
var pr = Util._getProjectionToLine(point, start, isClosed);
newStart.push(pr.x);
newStart.push(pr.y);
});
return newStart;
},
_prepareToStringify: function (obj) {
var desc;
obj.visitedByCircularReferenceRemoval = true;
for (var key in obj) {
if (!(obj.hasOwnProperty(key) && obj[key] && typeof obj[key] == 'object')) {
continue;
}
desc = Object.getOwnPropertyDescriptor(obj, key);
if (obj[key].visitedByCircularReferenceRemoval ||
Util._isElement(obj[key])) {
if (desc.configurable) {
delete obj[key];
}
else {
return null;
}
}
else if (Util._prepareToStringify(obj[key]) === null) {
if (desc.configurable) {
delete obj[key];
}
else {
return null;
}
}
}
delete obj.visitedByCircularReferenceRemoval;
return obj;
}
};
function _formatValue(val) {
if (Util._isString(val)) {
return '"' + val + '"';
}
if (Object.prototype.toString.call(val) === '[object Number]') {
return val;
}
if (Util._isBoolean(val)) {
return val;
}
return Object.prototype.toString.call(val);
}
function RGBComponent(val) {
if (val > 255) {
return 255;
}
else if (val < 0) {
return 0;
}
return Math.round(val);
}
function getNumberValidator() {
if (isUnminified) {
return function (val, attr) {
if (!Util._isNumber(val)) {
Util.warn(_formatValue(val) +
' is a not valid value for "' +
attr +
'" attribute. The value should be a number.');
}
return val;
};
}
}
function getNumberOrAutoValidator() {
if (isUnminified) {
return function (val, attr) {
var isNumber = Util._isNumber(val);
var isAuto = val === 'auto';
if (!(isNumber || isAuto)) {
Util.warn(_formatValue(val) +
' is a not valid value for "' +
attr +
'" attribute. The value should be a number or "auto".');
}
return val;
};
}
}
function getStringValidator() {
if (isUnminified) {
return function (val, attr) {
if (!Util._isString(val)) {
Util.warn(_formatValue(val) +
' is a not valid value for "' +
attr +
'" attribute. The value should be a string.');
}
return val;
};
}
}
function getNumberArrayValidator() {
if (isUnminified) {
return function (val, attr) {
if (!Util._isArray(val)) {
Util.warn(_formatValue(val) +
' is a not valid value for "' +
attr +
'" attribute. The value should be a array of numbers.');
}
else {
val.forEach(function (item) {
if (!Util._isNumber(item)) {
Util.warn('"' +
attr +
'" attribute has non numeric element ' +
item +
'. Make sure that all elements are numbers.');
}
});
}
return val;
};
}
}
function getBooleanValidator() {
if (isUnminified) {
return function (val, attr) {
var isBool = val === true || val === false;
if (!isBool) {
Util.warn(_formatValue(val) +
' is a not valid value for "' +
attr +
'" attribute. The value should be a boolean.');
}
return val;
};
}
}
function getComponentValidator(components) {
if (isUnminified) {
return function (val, attr) {
if (!Util.isObject(val)) {
Util.warn(_formatValue(val) +
' is a not valid value for "' +
attr +
'" attribute. The value should be an object with properties ' +
components);
}
return val;
};
}
}
var GET = 'get', SET = 'set';
var Factory = {
addGetterSetter: function (constructor, attr, def, validator, after) {
this.addGetter(constructor, attr, def);
this.addSetter(constructor, attr, validator, after);
this.addOverloadedGetterSetter(constructor, attr);
},
addGetter: function (constructor, attr, def) {
var method = GET + Util._capitalize(attr);
constructor.prototype[method] =
constructor.prototype[method] ||
function () {
var val = this.attrs[attr];
return val === undefined ? def : val;
};
},
addSetter: function (constructor, attr, validator, after) {
var method = SET + Util._capitalize(attr);
if (!constructor.prototype[method]) {
Factory.overWriteSetter(constructor, attr, validator, after);
}
},
overWriteSetter: function (constructor, attr, validator, after) {
var method = SET + Util._capitalize(attr);
constructor.prototype[method] = function (val) {
if (validator && val !== undefined && val !== null) {
val = validator.call(this, val, attr);
}
this._setAttr(attr, val);
if (after) {
after.call(this);
}
return this;
};
},
addComponentsGetterSetter: function (constructor, attr, components, validator, after) {
var len = components.length, capitalize = Util._capitalize, getter = GET + capitalize(attr), setter = SET + capitalize(attr), n, component;
// getter
constructor.prototype[getter] = function () {
var ret = {};
for (n = 0; n < len; n++) {
component = components[n];
ret[component] = this.getAttr(attr + capitalize(component));
}
return ret;
};
var basicValidator = getComponentValidator(components);
// setter
constructor.prototype[setter] = function (val) {
var oldVal = this.attrs[attr], key;
if (validator) {
val = validator.call(this, val);
}
if (basicValidator) {
basicValidator.call(this, val, attr);
}
for (key in val) {
if (!val.hasOwnProperty(key)) {
continue;
}
this._setAttr(attr + capitalize(key), val[key]);
}
this._fireChangeEvent(attr, oldVal, val);
if (after) {
after.call(this);
}
return this;
};
this.addOverloadedGetterSetter(constructor, attr);
},
addOverloadedGetterSetter: function (constructor, attr) {
var capitalizedAttr = Util._capitalize(attr), setter = SET + capitalizedAttr, getter = GET + capitalizedAttr;
constructor.prototype[attr] = function () {
// setting
if (arguments.length) {
this[setter](arguments[0]);
return this;
}
// getting
return this[getter]();
};
},
addDeprecatedGetterSetter: function (constructor, attr, def, validator) {
Util.error('Adding deprecated ' + attr);
var method = GET + Util._capitalize(attr);
var message = attr +
' property is deprecated and will be removed soon. Look at Konva change log for more information.';
constructor.prototype[method] = function () {
Util.error(message);
var val = this.attrs[attr];
return val === undefined ? def : val;
};
this.addSetter(constructor, attr, validator, function () {
Util.error(message);
});
this.addOverloadedGetterSetter(constructor, attr);
},
backCompat: function (constructor, methods) {
Util.each(methods, function (oldMethodName, newMethodName) {
var method = constructor.prototype[newMethodName];
var oldGetter = GET + Util._capitalize(oldMethodName);
var oldSetter = SET + Util._capitalize(oldMethodName);
function deprecated() {
method.apply(this, arguments);
Util.error('"' +
oldMethodName +
'" method is deprecated and will be removed soon. Use ""' +
newMethodName +
'" instead.');
}
constructor.prototype[oldMethodName] = deprecated;
constructor.prototype[oldGetter] = deprecated;
constructor.prototype[oldSetter] = deprecated;
});
},
afterSetFilter: function () {
this._filterUpToDate = false;
}
};
/*! *****************************************************************************
Copyright (c) Microsoft Corporation. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at http://www.apache.org/licenses/LICENSE-2.0
THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
MERCHANTABLITY OR NON-INFRINGEMENT.
See the Apache Version 2.0 License for specific language governing permissions
and limitations under the License.
***************************************************************************** */
/* global Reflect, Promise */
var extendStatics = function(d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
function __extends(d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
}
var COMMA = ',', OPEN_PAREN = '(', CLOSE_PAREN = ')', OPEN_PAREN_BRACKET = '([', CLOSE_BRACKET_PAREN = '])', SEMICOLON = ';', DOUBLE_PAREN = '()',
// EMPTY_STRING = '',
EQUALS = '=',
// SET = 'set',
CONTEXT_METHODS = [
'arc',
'arcTo',
'beginPath',
'bezierCurveTo',
'clearRect',
'clip',
'closePath',
'createLinearGradient',
'createPattern',
'createRadialGradient',
'drawImage',
'fill',
'fillText',
'getImageData',
'createImageData',
'lineTo',
'moveTo',
'putImageData',
'quadraticCurveTo',
'rect',
'restore',
'rotate',
'save',
'scale',
'setLineDash',
'setTransform',
'stroke',
'strokeText',
'transform',
'translate'
];
var CONTEXT_PROPERTIES = [
'fillStyle',
'strokeStyle',
'shadowColor',
'shadowBlur',
'shadowOffsetX',
'shadowOffsetY',
'lineCap',
'lineDashOffset',
'lineJoin',
'lineWidth',
'miterLimit',
'font',
'textAlign',
'textBaseline',
'globalAlpha',
'globalCompositeOperation'
];
// TODO: document all context methods
var traceArrMax = 100;
/**
* Konva wrapper around native 2d canvas context. It has almost the same API of 2d context with some additional functions.
* With core Konva shapes you don't need to use this object. But you have to use it if you want to create
* a custom shape or a custom hit regions.
* @constructor
* @memberof Konva
* @example
* const rect = new Konva.Shape({
* fill: 'red',
* width: 100,
* height: 100,
* sceneFunc: (ctx, shape) => {
* // ctx - is context wrapper
* // shape - is instance of Konva.Shape, so it equals to "rect" variable
* ctx.rect(0, 0, shape.getAttr('width'), shape.getAttr('height'));
*
* // automatically fill shape from props and draw hit region
* ctx.fillStrokeShape(shape);
* }
* })
*/
var Context = /** @class */ (function () {
function Context(canvas) {
this.canvas = canvas;
this._context = canvas._canvas.getContext('2d');
if (getGlobalKonva().enableTrace) {
this.traceArr = [];
this._enableTrace();
}
}
/**
* fill shape
* @method
* @name Konva.Context#fillShape
* @param {Konva.Shape} shape
*/
Context.prototype.fillShape = function (shape) {
if (shape.getFillEnabled()) {
this._fill(shape);
}
};
Context.prototype._fill = function (shape) {
// abstract
};
/**
* stroke shape
* @method
* @name Konva.Context#strokeShape
* @param {Konva.Shape} shape
*/
Context.prototype.strokeShape = function (shape) {
if (shape.getStrokeEnabled()) {
this._stroke(shape);
}
};
Context.prototype._stroke = function (shape) {
// abstract
};
/**
* fill then stroke
* @method
* @name Konva.Context#fillStrokeShape
* @param {Konva.Shape} shape
*/
Context.prototype.fillStrokeShape = function (shape) {
if (shape.getFillEnabled()) {
this._fill(shape);
}
if (shape.getStrokeEnabled()) {
this._stroke(shape);
}
};
Context.prototype.getTrace = function (relaxed) {
var traceArr = this.traceArr, len = traceArr.length, str = '', n, trace, method, args;
for (n = 0; n < len; n++) {
trace = traceArr[n];
method = trace.method;
// methods
if (method) {
args = trace.args;
str += method;
if (relaxed) {
str += DOUBLE_PAREN;
}
else {
if (Util._isArray(args[0])) {
str += OPEN_PAREN_BRACKET + args.join(COMMA) + CLOSE_BRACKET_PAREN;
}
else {
str += OPEN_PAREN + args.join(COMMA) + CLOSE_PAREN;
}
}
}
else {
// properties
str += trace.property;
if (!relaxed) {
str += EQUALS + trace.val;
}
}
str += SEMICOLON;
}
return str;
};
Context.prototype.clearTrace = function () {
this.traceArr = [];
};
Context.prototype._trace = function (str) {
var traceArr = this.traceArr, len;
traceArr.push(str);
len = traceArr.length;
if (len >= traceArrMax) {
traceArr.shift();
}
};
/**
* reset canvas context transform
* @method
* @name Konva.Context#reset
*/
Context.prototype.reset = function () {
var pixelRatio = this.getCanvas().getPixelRatio();
this.setTransform(1 * pixelRatio, 0, 0, 1 * pixelRatio, 0, 0);
};
/**
* get canvas wrapper
* @method
* @name Konva.Context#getCanvas
* @returns {Konva.Canvas}
*/
Context.prototype.getCanvas = function () {
return this.canvas;
};
/**
* clear canvas
* @method
* @name Konva.Context#clear
* @param {Object} [bounds]
* @param {Number} [bounds.x]
* @param {Number} [bounds.y]
* @param {Number} [bounds.width]
* @param {Number} [bounds.height]
*/
Context.prototype.clear = function (bounds) {
var canvas = this.getCanvas();
if (bounds) {
this.clearRect(bounds.x || 0, bounds.y || 0, bounds.width || 0, bounds.height || 0);
}
else {
this.clearRect(0, 0, canvas.getWidth() / canvas.pixelRatio, canvas.getHeight() / canvas.pixelRatio);
}
};
Context.prototype._applyLineCap = function (shape) {