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konva.js
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(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.Konva = factory());
})(this, (function () { 'use strict';
/*
* Konva JavaScript Framework v9.3.18
* http://konvajs.org/
* Licensed under the MIT
* Date: Mon Dec 23 2024
*
* Original work Copyright (C) 2011 - 2013 by Eric Rowell (KineticJS)
* Modified work Copyright (C) 2014 - present by Anton Lavrenov (Konva)
*
* @license
*/
const PI_OVER_180 = Math.PI / 180;
/**
* @namespace Konva
*/
function detectBrowser() {
return (typeof window !== 'undefined' &&
// browser case
({}.toString.call(window) === '[object Window]' ||
// electron case
{}.toString.call(window) === '[object global]'));
}
const glob = typeof global !== 'undefined'
? global
: typeof window !== 'undefined'
? window
: typeof WorkerGlobalScope !== 'undefined'
? self
: {};
const Konva$2 = {
_global: glob,
version: '9.3.18',
isBrowser: detectBrowser(),
isUnminified: /param/.test(function (param) { }.toString()),
dblClickWindow: 400,
getAngle(angle) {
return Konva$2.angleDeg ? angle * PI_OVER_180 : angle;
},
enableTrace: false,
pointerEventsEnabled: true,
/**
* Should Konva automatically update canvas on any changes. Default is true.
* @property autoDrawEnabled
* @default true
* @name autoDrawEnabled
* @memberof Konva
* @example
* Konva.autoDrawEnabled = true;
*/
autoDrawEnabled: true,
/**
* Should we enable hit detection while dragging? For performance reasons, by default it is false.
* But on some rare cases you want to see hit graph and check intersections. Just set it to true.
* @property hitOnDragEnabled
* @default false
* @name hitOnDragEnabled
* @memberof Konva
* @example
* Konva.hitOnDragEnabled = true;
*/
hitOnDragEnabled: false,
/**
* Should we capture touch events and bind them to the touchstart target? That is how it works on DOM elements.
* The case: we touchstart on div1, then touchmove out of that element into another element div2.
* DOM will continue trigger touchmove events on div1 (not div2). Because events are "captured" into initial target.
* By default Konva do not do that and will trigger touchmove on another element, while pointer is moving.
* @property capturePointerEventsEnabled
* @default false
* @name capturePointerEventsEnabled
* @memberof Konva
* @example
* Konva.capturePointerEventsEnabled = true;
*/
capturePointerEventsEnabled: false,
_mouseListenClick: false,
_touchListenClick: false,
_pointerListenClick: false,
_mouseInDblClickWindow: false,
_touchInDblClickWindow: false,
_pointerInDblClickWindow: false,
_mouseDblClickPointerId: null,
_touchDblClickPointerId: null,
_pointerDblClickPointerId: null,
_fixTextRendering: false,
/**
* Global pixel ratio configuration. KonvaJS automatically detect pixel ratio of current device.
* But you may override such property, if you want to use your value. Set this value before any components initializations.
* @property pixelRatio
* @default undefined
* @name pixelRatio
* @memberof Konva
* @example
* // before any Konva code:
* Konva.pixelRatio = 1;
*/
pixelRatio: (typeof window !== 'undefined' && window.devicePixelRatio) || 1,
/**
* Drag distance property. If you start to drag a node you may want to wait until pointer is moved to some distance from start point,
* only then start dragging. Default is 3px.
* @property dragDistance
* @default 0
* @memberof Konva
* @example
* Konva.dragDistance = 10;
*/
dragDistance: 3,
/**
* Use degree values for angle properties. You may set this property to false if you want to use radian values.
* @property angleDeg
* @default true
* @memberof Konva
* @example
* node.rotation(45); // 45 degrees
* Konva.angleDeg = false;
* node.rotation(Math.PI / 2); // PI/2 radian
*/
angleDeg: true,
/**
* Show different warnings about errors or wrong API usage
* @property showWarnings
* @default true
* @memberof Konva
* @example
* Konva.showWarnings = false;
*/
showWarnings: true,
/**
* Configure what mouse buttons can be used for drag and drop.
* Default value is [0] - only left mouse button.
* @property dragButtons
* @default true
* @memberof Konva
* @example
* // enable left and right mouse buttons
* Konva.dragButtons = [0, 2];
*/
dragButtons: [0, 1],
/**
* returns whether or not drag and drop is currently active
* @method
* @memberof Konva
*/
isDragging() {
return Konva$2['DD'].isDragging;
},
isTransforming() {
var _a;
return (_a = Konva$2['Transformer']) === null || _a === void 0 ? void 0 : _a.isTransforming();
},
/**
* returns whether or not a drag and drop operation is ready, but may
* not necessarily have started
* @method
* @memberof Konva
*/
isDragReady() {
return !!Konva$2['DD'].node;
},
/**
* Should Konva release canvas elements on destroy. Default is true.
* Useful to avoid memory leak issues in Safari on macOS/iOS.
* @property releaseCanvasOnDestroy
* @default true
* @name releaseCanvasOnDestroy
* @memberof Konva
* @example
* Konva.releaseCanvasOnDestroy = true;
*/
releaseCanvasOnDestroy: true,
// user agent
document: glob.document,
// insert Konva into global namespace (window)
// it is required for npm packages
_injectGlobal(Konva) {
glob.Konva = Konva;
},
};
const _registerNode = (NodeClass) => {
Konva$2[NodeClass.prototype.getClassName()] = NodeClass;
};
Konva$2._injectGlobal(Konva$2);
/*
* Last updated November 2011
* By Simon Sarris
* www.simonsarris.com
*
* 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
*/
class Transform {
constructor(m = [1, 0, 0, 1, 0, 0]) {
this.dirty = false;
this.m = (m && m.slice()) || [1, 0, 0, 1, 0, 0];
}
reset() {
this.m[0] = 1;
this.m[1] = 0;
this.m[2] = 0;
this.m[3] = 1;
this.m[4] = 0;
this.m[5] = 0;
}
/**
* Copy Konva.Transform object
* @method
* @name Konva.Transform#copy
* @returns {Konva.Transform}
* @example
* const tr = shape.getTransform().copy()
*/
copy() {
return new Transform(this.m);
}
copyInto(tr) {
tr.m[0] = this.m[0];
tr.m[1] = this.m[1];
tr.m[2] = this.m[2];
tr.m[3] = this.m[3];
tr.m[4] = this.m[4];
tr.m[5] = this.m[5];
}
/**
* Transform point
* @method
* @name Konva.Transform#point
* @param {Object} point 2D point(x, y)
* @returns {Object} 2D point(x, y)
*/
point(point) {
const 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}
*/
translate(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}
*/
scale(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}
*/
rotate(rad) {
const c = Math.cos(rad);
const s = Math.sin(rad);
const m11 = this.m[0] * c + this.m[2] * s;
const m12 = this.m[1] * c + this.m[3] * s;
const m21 = this.m[0] * -s + this.m[2] * c;
const 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)
*/
getTranslation() {
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}
*/
skew(sx, sy) {
const m11 = this.m[0] + this.m[2] * sy;
const m12 = this.m[1] + this.m[3] * sy;
const m21 = this.m[2] + this.m[0] * sx;
const 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}
*/
multiply(matrix) {
const m11 = this.m[0] * matrix.m[0] + this.m[2] * matrix.m[1];
const m12 = this.m[1] * matrix.m[0] + this.m[3] * matrix.m[1];
const m21 = this.m[0] * matrix.m[2] + this.m[2] * matrix.m[3];
const m22 = this.m[1] * matrix.m[2] + this.m[3] * matrix.m[3];
const dx = this.m[0] * matrix.m[4] + this.m[2] * matrix.m[5] + this.m[4];
const 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}
*/
invert() {
const d = 1 / (this.m[0] * this.m[3] - this.m[1] * this.m[2]);
const m0 = this.m[3] * d;
const m1 = -this.m[1] * d;
const m2 = -this.m[2] * d;
const m3 = this.m[0] * d;
const m4 = d * (this.m[2] * this.m[5] - this.m[3] * this.m[4]);
const 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
*/
getMatrix() {
return this.m;
}
/**
* convert transformation matrix back into node's attributes
* @method
* @name Konva.Transform#decompose
* @returns {Konva.Transform}
*/
decompose() {
const a = this.m[0];
const b = this.m[1];
const c = this.m[2];
const d = this.m[3];
const e = this.m[4];
const f = this.m[5];
const delta = a * d - b * c;
const result = {
x: e,
y: f,
rotation: 0,
scaleX: 0,
scaleY: 0,
skewX: 0,
skewY: 0,
};
// Apply the QR-like decomposition.
if (a != 0 || b != 0) {
const r = Math.sqrt(a * a + b * b);
result.rotation = b > 0 ? Math.acos(a / r) : -Math.acos(a / r);
result.scaleX = r;
result.scaleY = delta / r;
result.skewX = (a * c + b * d) / delta;
result.skewY = 0;
}
else if (c != 0 || d != 0) {
const s = Math.sqrt(c * c + d * d);
result.rotation =
Math.PI / 2 - (d > 0 ? Math.acos(-c / s) : -Math.acos(c / s));
result.scaleX = delta / s;
result.scaleY = s;
result.skewX = 0;
result.skewY = (a * c + b * d) / delta;
}
else ;
result.rotation = Util._getRotation(result.rotation);
return result;
}
}
// CONSTANTS
const 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$1 = '#', EMPTY_STRING$1 = '', 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\((\d{1,3}),(\d{1,3}),(\d{1,3})\)/;
let animQueue = [];
const req = (typeof requestAnimationFrame !== 'undefined' && requestAnimationFrame) ||
function (f) {
setTimeout(f, 60);
};
/**
* @namespace Util
* @memberof Konva
*/
const Util = {
/*
* cherry-picked utilities from underscore.js
*/
_isElement(obj) {
return !!(obj && obj.nodeType == 1);
},
_isFunction(obj) {
return !!(obj && obj.constructor && obj.call && obj.apply);
},
_isPlainObject(obj) {
return !!obj && obj.constructor === Object;
},
_isArray(obj) {
return Object.prototype.toString.call(obj) === OBJECT_ARRAY;
},
_isNumber(obj) {
return (Object.prototype.toString.call(obj) === OBJECT_NUMBER &&
!isNaN(obj) &&
isFinite(obj));
},
_isString(obj) {
return Object.prototype.toString.call(obj) === OBJECT_STRING;
},
_isBoolean(obj) {
return Object.prototype.toString.call(obj) === OBJECT_BOOLEAN;
},
// arrays are objects too
isObject(val) {
return val instanceof Object;
},
isValidSelector(selector) {
if (typeof selector !== 'string') {
return false;
}
const firstChar = selector[0];
return (firstChar === '#' ||
firstChar === '.' ||
firstChar === firstChar.toUpperCase());
},
_sign(number) {
if (number === 0) {
// that is not what sign usually returns
// but that is what we need
return 1;
}
if (number > 0) {
return 1;
}
else {
return -1;
}
},
requestAnimFrame(callback) {
animQueue.push(callback);
if (animQueue.length === 1) {
req(function () {
const queue = animQueue;
animQueue = [];
queue.forEach(function (cb) {
cb();
});
});
}
},
createCanvasElement() {
const canvas = document.createElement('canvas');
// on some environments canvas.style is readonly
try {
canvas.style = canvas.style || {};
}
catch (e) { }
return canvas;
},
createImageElement() {
return document.createElement('img');
},
_isInDocument(el) {
while ((el = el.parentNode)) {
if (el == document) {
return true;
}
}
return false;
},
/*
* arg can be an image object or image data
*/
_urlToImage(url, callback) {
// if arg is a string, then it's a data url
const imageObj = Util.createImageElement();
imageObj.onload = function () {
callback(imageObj);
};
imageObj.src = url;
},
_rgbToHex(r, g, b) {
return ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
},
_hexToRgb(hex) {
hex = hex.replace(HASH$1, EMPTY_STRING$1);
const 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() {
let randColor = ((Math.random() * 0xffffff) << 0).toString(16);
while (randColor.length < 6) {
randColor = ZERO + randColor;
}
return HASH$1 + randColor;
},
/**
* 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(color) {
let 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$1) {
// 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(str) {
str = str || 'black';
return (Util._namedColorToRBA(str) ||
Util._hex3ColorToRGBA(str) ||
Util._hex4ColorToRGBA(str) ||
Util._hex6ColorToRGBA(str) ||
Util._hex8ColorToRGBA(str) ||
Util._rgbColorToRGBA(str) ||
Util._rgbaColorToRGBA(str) ||
Util._hslColorToRGBA(str));
},
// Parse named css color. Like "green"
_namedColorToRBA(str) {
const 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(str) {
if (str.indexOf('rgb(') === 0) {
str = str.match(/rgb\(([^)]+)\)/)[1];
const parts = str.split(/ *, */).map(Number);
return {
r: parts[0],
g: parts[1],
b: parts[2],
a: 1,
};
}
},
// Parse rgba(n, n, n, n)
_rgbaColorToRGBA(str) {
if (str.indexOf('rgba(') === 0) {
str = str.match(/rgba\(([^)]+)\)/)[1];
const parts = str.split(/ *, */).map((n, index) => {
if (n.slice(-1) === '%') {
return index === 3 ? parseInt(n) / 100 : (parseInt(n) / 100) * 255;
}
return Number(n);
});
return {
r: parts[0],
g: parts[1],
b: parts[2],
a: parts[3],
};
}
},
// Parse #nnnnnnnn
_hex8ColorToRGBA(str) {
if (str[0] === '#' && str.length === 9) {
return {
r: parseInt(str.slice(1, 3), 16),
g: parseInt(str.slice(3, 5), 16),
b: parseInt(str.slice(5, 7), 16),
a: parseInt(str.slice(7, 9), 16) / 0xff,
};
}
},
// Parse #nnnnnn
_hex6ColorToRGBA(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 #nnnn
_hex4ColorToRGBA(str) {
if (str[0] === '#' && str.length === 5) {
return {
r: parseInt(str[1] + str[1], 16),
g: parseInt(str[2] + str[2], 16),
b: parseInt(str[3] + str[3], 16),
a: parseInt(str[4] + str[4], 16) / 0xff,
};
}
},
// Parse #nnn
_hex3ColorToRGBA(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,
};
}
},
// Code adapted from https://github.com/Qix-/color-convert/blob/master/conversions.js#L244
_hslColorToRGBA(str) {
// Check hsl() format
if (/hsl\((\d+),\s*([\d.]+)%,\s*([\d.]+)%\)/g.test(str)) {
// Extract h, s, l
const [_, ...hsl] = /hsl\((\d+),\s*([\d.]+)%,\s*([\d.]+)%\)/g.exec(str);
const h = Number(hsl[0]) / 360;
const s = Number(hsl[1]) / 100;
const l = Number(hsl[2]) / 100;
let t2;
let t3;
let val;
if (s === 0) {
val = l * 255;
return {
r: Math.round(val),
g: Math.round(val),
b: Math.round(val),
a: 1,
};
}
if (l < 0.5) {
t2 = l * (1 + s);
}
else {
t2 = l + s - l * s;
}
const t1 = 2 * l - t2;
const rgb = [0, 0, 0];
for (let i = 0; i < 3; i++) {
t3 = h + (1 / 3) * -(i - 1);
if (t3 < 0) {
t3++;
}
if (t3 > 1) {
t3--;
}
if (6 * t3 < 1) {
val = t1 + (t2 - t1) * 6 * t3;
}
else if (2 * t3 < 1) {
val = t2;
}
else if (3 * t3 < 2) {
val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
}
else {
val = t1;
}
rgb[i] = val * 255;
}
return {
r: Math.round(rgb[0]),
g: Math.round(rgb[1]),
b: Math.round(rgb[2]),
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(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(obj) {
const retObj = {};
for (const 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(arr) {
return arr.slice(0);
},
degToRad(deg) {
return deg * PI_OVER_DEG180;
},
radToDeg(rad) {
return rad * DEG180_OVER_PI;
},
_degToRad(deg) {
Util.warn('Util._degToRad is removed. Please use public Util.degToRad instead.');
return Util.degToRad(deg);
},
_radToDeg(rad) {
Util.warn('Util._radToDeg is removed. Please use public Util.radToDeg instead.');
return Util.radToDeg(rad);
},
_getRotation(radians) {
return Konva$2.angleDeg ? Util.radToDeg(radians) : radians;
},
_capitalize(str) {
return str.charAt(0).toUpperCase() + str.slice(1);
},
throw(str) {
throw new Error(KONVA_ERROR + str);
},
error(str) {
console.error(KONVA_ERROR + str);
},
warn(str) {
if (!Konva$2.showWarnings) {
return;
}
console.warn(KONVA_WARNING + str);
},
each(obj, func) {
for (const key in obj) {
func(key, obj[key]);
}
},
_inRange(val, left, right) {
return left <= val && val < right;
},
_getProjectionToSegment(x1, y1, x2, y2, x3, y3) {
let x, y, dist;
const pd2 = (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2);
if (pd2 == 0) {
x = x1;
y = y1;