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| Viewing file: Select action/file-type: import requestAnimationFrame from 'raf';
import RGBColor from 'rgbcolor';
import { SVGPathData } from 'svg-pathdata';
import { canvasRGBA } from 'stackblur-canvas';
/**
* Options preset for `OffscreenCanvas`.
* @param config - Preset requirements.
* @param config.DOMParser - XML/HTML parser from string into DOM Document.
* @returns Preset object.
*/
function offscreen({ DOMParser: DOMParserFallback } = {}) {
const preset = {
window: null,
ignoreAnimation: true,
ignoreMouse: true,
DOMParser: DOMParserFallback,
createCanvas(width, height) {
return new OffscreenCanvas(width, height);
},
async createImage(url) {
const response = await fetch(url);
const blob = await response.blob();
const img = await createImageBitmap(blob);
return img;
}
};
if (typeof DOMParser !== 'undefined'
|| typeof DOMParserFallback === 'undefined') {
Reflect.deleteProperty(preset, 'DOMParser');
}
return preset;
}
/**
* Options preset for `node-canvas`.
* @param config - Preset requirements.
* @param config.DOMParser - XML/HTML parser from string into DOM Document.
* @param config.canvas - `node-canvas` exports.
* @param config.fetch - WHATWG-compatible `fetch` function.
* @returns Preset object.
*/
function node({ DOMParser, canvas, fetch }) {
return {
window: null,
ignoreAnimation: true,
ignoreMouse: true,
DOMParser,
fetch,
createCanvas: canvas.createCanvas,
createImage: canvas.loadImage
};
}
var index = /*#__PURE__*/Object.freeze({
__proto__: null,
offscreen: offscreen,
node: node
});
/**
* HTML-safe compress white-spaces.
* @param str - String to compress.
* @returns String.
*/
function compressSpaces(str) {
return str.replace(/(?!\u3000)\s+/gm, ' ');
}
/**
* HTML-safe left trim.
* @param str - String to trim.
* @returns String.
*/
function trimLeft(str) {
return str.replace(/^[\n \t]+/, '');
}
/**
* HTML-safe right trim.
* @param str - String to trim.
* @returns String.
*/
function trimRight(str) {
return str.replace(/[\n \t]+$/, '');
}
/**
* String to numbers array.
* @param str - Numbers string.
* @returns Numbers array.
*/
function toNumbers(str) {
const matches = (str || '').match(/-?(\d+(?:\.\d*(?:[eE][+-]?\d+)?)?|\.\d+)(?=\D|$)/gm) || [];
return matches.map(parseFloat);
}
// Microsoft Edge fix
const allUppercase = /^[A-Z-]+$/;
/**
* Normalize attribute name.
* @param name - Attribute name.
* @returns Normalized attribute name.
*/
function normalizeAttributeName(name) {
if (allUppercase.test(name)) {
return name.toLowerCase();
}
return name;
}
/**
* Parse external URL.
* @param url - CSS url string.
* @returns Parsed URL.
*/
function parseExternalUrl(url) {
// single quotes [2]
// v double quotes [3]
// v v no quotes [4]
// v v v
const urlMatch = /url\(('([^']+)'|"([^"]+)"|([^'")]+))\)/.exec(url) || [];
return urlMatch[2] || urlMatch[3] || urlMatch[4];
}
/**
* Transform floats to integers in rgb colors.
* @param color - Color to normalize.
* @returns Normalized color.
*/
function normalizeColor(color) {
if (!color.startsWith('rgb')) {
return color;
}
let rgbParts = 3;
const normalizedColor = color.replace(/\d+(\.\d+)?/g, (num, isFloat) => (rgbParts-- && isFloat
? String(Math.round(parseFloat(num)))
: num));
return normalizedColor;
}
// slightly modified version of https://github.com/keeganstreet/specificity/blob/master/specificity.js
const attributeRegex = /(\[[^\]]+\])/g;
const idRegex = /(#[^\s+>~.[:]+)/g;
const classRegex = /(\.[^\s+>~.[:]+)/g;
const pseudoElementRegex = /(::[^\s+>~.[:]+|:first-line|:first-letter|:before|:after)/gi;
const pseudoClassWithBracketsRegex = /(:[\w-]+\([^)]*\))/gi;
const pseudoClassRegex = /(:[^\s+>~.[:]+)/g;
const elementRegex = /([^\s+>~.[:]+)/g;
function findSelectorMatch(selector, regex) {
const matches = regex.exec(selector);
if (!matches) {
return [
selector,
0
];
}
return [
selector.replace(regex, ' '),
matches.length
];
}
/**
* Measure selector specificity.
* @param selector - Selector to measure.
* @returns Specificity.
*/
function getSelectorSpecificity(selector) {
const specificity = [0, 0, 0];
let currentSelector = selector
.replace(/:not\(([^)]*)\)/g, ' $1 ')
.replace(/{[\s\S]*/gm, ' ');
let delta = 0;
[currentSelector, delta] = findSelectorMatch(currentSelector, attributeRegex);
specificity[1] += delta;
[currentSelector, delta] = findSelectorMatch(currentSelector, idRegex);
specificity[0] += delta;
[currentSelector, delta] = findSelectorMatch(currentSelector, classRegex);
specificity[1] += delta;
[currentSelector, delta] = findSelectorMatch(currentSelector, pseudoElementRegex);
specificity[2] += delta;
[currentSelector, delta] = findSelectorMatch(currentSelector, pseudoClassWithBracketsRegex);
specificity[1] += delta;
[currentSelector, delta] = findSelectorMatch(currentSelector, pseudoClassRegex);
specificity[1] += delta;
currentSelector = currentSelector
.replace(/[*\s+>~]/g, ' ')
.replace(/[#.]/g, ' ');
[currentSelector, delta] = findSelectorMatch(currentSelector, elementRegex); // lgtm [js/useless-assignment-to-local]
specificity[2] += delta;
return specificity.join('');
}
const PSEUDO_ZERO = .00000001;
/**
* Vector magnitude.
* @param v
* @returns Number result.
*/
function vectorMagnitude(v) {
return Math.sqrt(Math.pow(v[0], 2) + Math.pow(v[1], 2));
}
/**
* Ratio between two vectors.
* @param u
* @param v
* @returns Number result.
*/
function vectorsRatio(u, v) {
return (u[0] * v[0] + u[1] * v[1]) / (vectorMagnitude(u) * vectorMagnitude(v));
}
/**
* Angle between two vectors.
* @param u
* @param v
* @returns Number result.
*/
function vectorsAngle(u, v) {
return (u[0] * v[1] < u[1] * v[0] ? -1 : 1) * Math.acos(vectorsRatio(u, v));
}
function CB1(t) {
return t * t * t;
}
function CB2(t) {
return 3 * t * t * (1 - t);
}
function CB3(t) {
return 3 * t * (1 - t) * (1 - t);
}
function CB4(t) {
return (1 - t) * (1 - t) * (1 - t);
}
function QB1(t) {
return t * t;
}
function QB2(t) {
return 2 * t * (1 - t);
}
function QB3(t) {
return (1 - t) * (1 - t);
}
/* eslint-disable @typescript-eslint/no-unsafe-assignment */
class Property {
constructor(document, name, value) {
this.document = document;
this.name = name;
this.value = value;
this.isNormalizedColor = false;
}
static empty(document) {
return new Property(document, 'EMPTY', '');
}
split(separator = ' ') {
const { document, name } = this;
return compressSpaces(this.getString())
.trim()
.split(separator)
.map(value => new Property(document, name, value));
}
hasValue(zeroIsValue) {
const { value } = this;
return value !== null
&& value !== ''
&& (zeroIsValue || value !== 0)
&& typeof value !== 'undefined';
}
isString(regexp) {
const { value } = this;
const result = typeof value === 'string';
if (!result || !regexp) {
return result;
}
return regexp.test(value);
}
isUrlDefinition() {
return this.isString(/^url\(/);
}
isPixels() {
if (!this.hasValue()) {
return false;
}
const asString = this.getString();
switch (true) {
case asString.endsWith('px'):
case /^[0-9]+$/.test(asString):
return true;
default:
return false;
}
}
setValue(value) {
this.value = value;
return this;
}
getValue(def) {
if (typeof def === 'undefined' || this.hasValue()) {
return this.value;
}
return def;
}
getNumber(def) {
if (!this.hasValue()) {
if (typeof def === 'undefined') {
return 0;
}
return parseFloat(def);
}
const { value } = this;
let n = parseFloat(value);
if (this.isString(/%$/)) {
n /= 100.0;
}
return n;
}
getString(def) {
if (typeof def === 'undefined' || this.hasValue()) {
return typeof this.value === 'undefined'
? ''
: String(this.value);
}
return String(def);
}
getColor(def) {
let color = this.getString(def);
if (this.isNormalizedColor) {
return color;
}
this.isNormalizedColor = true;
color = normalizeColor(color);
this.value = color;
return color;
}
getDpi() {
return 96.0; // TODO: compute?
}
getRem() {
return this.document.rootEmSize;
}
getEm() {
return this.document.emSize;
}
getUnits() {
return this.getString().replace(/[0-9.-]/g, '');
}
getPixels(axisOrIsFontSize, processPercent = false) {
if (!this.hasValue()) {
return 0;
}
const [axis, isFontSize] = typeof axisOrIsFontSize === 'boolean'
? [undefined, axisOrIsFontSize]
: [axisOrIsFontSize];
const { viewPort } = this.document.screen;
switch (true) {
case this.isString(/vmin$/):
return this.getNumber()
/ 100.0
* Math.min(viewPort.computeSize('x'), viewPort.computeSize('y'));
case this.isString(/vmax$/):
return this.getNumber()
/ 100.0
* Math.max(viewPort.computeSize('x'), viewPort.computeSize('y'));
case this.isString(/vw$/):
return this.getNumber()
/ 100.0
* viewPort.computeSize('x');
case this.isString(/vh$/):
return this.getNumber()
/ 100.0
* viewPort.computeSize('y');
case this.isString(/rem$/):
return this.getNumber() * this.getRem( /* viewPort */);
case this.isString(/em$/):
return this.getNumber() * this.getEm( /* viewPort */);
case this.isString(/ex$/):
return this.getNumber() * this.getEm( /* viewPort */) / 2.0;
case this.isString(/px$/):
return this.getNumber();
case this.isString(/pt$/):
return this.getNumber() * this.getDpi( /* viewPort */) * (1.0 / 72.0);
case this.isString(/pc$/):
return this.getNumber() * 15;
case this.isString(/cm$/):
return this.getNumber() * this.getDpi( /* viewPort */) / 2.54;
case this.isString(/mm$/):
return this.getNumber() * this.getDpi( /* viewPort */) / 25.4;
case this.isString(/in$/):
return this.getNumber() * this.getDpi( /* viewPort */);
case this.isString(/%$/) && isFontSize:
return this.getNumber() * this.getEm( /* viewPort */);
case this.isString(/%$/):
return this.getNumber() * viewPort.computeSize(axis);
default: {
const n = this.getNumber();
if (processPercent && n < 1.0) {
return n * viewPort.computeSize(axis);
}
return n;
}
}
}
getMilliseconds() {
if (!this.hasValue()) {
return 0;
}
if (this.isString(/ms$/)) {
return this.getNumber();
}
return this.getNumber() * 1000;
}
getRadians() {
if (!this.hasValue()) {
return 0;
}
switch (true) {
case this.isString(/deg$/):
return this.getNumber() * (Math.PI / 180.0);
case this.isString(/grad$/):
return this.getNumber() * (Math.PI / 200.0);
case this.isString(/rad$/):
return this.getNumber();
default:
return this.getNumber() * (Math.PI / 180.0);
}
}
getDefinition() {
const asString = this.getString();
let name = /#([^)'"]+)/.exec(asString);
if (name) {
name = name[1];
}
if (!name) {
name = asString;
}
return this.document.definitions[name];
}
getFillStyleDefinition(element, opacity) {
let def = this.getDefinition();
if (!def) {
return null;
}
// gradient
if (typeof def.createGradient === 'function') {
return def.createGradient(this.document.ctx, element, opacity);
}
// pattern
if (typeof def.createPattern === 'function') {
if (def.getHrefAttribute().hasValue()) {
const patternTransform = def.getAttribute('patternTransform');
def = def.getHrefAttribute().getDefinition();
if (patternTransform.hasValue()) {
def.getAttribute('patternTransform', true).setValue(patternTransform.value);
}
}
return def.createPattern(this.document.ctx, element, opacity);
}
return null;
}
getTextBaseline() {
if (!this.hasValue()) {
return null;
}
return Property.textBaselineMapping[this.getString()];
}
addOpacity(opacity) {
let value = this.getColor();
const len = value.length;
let commas = 0;
// Simulate old RGBColor version, which can't parse rgba.
for (let i = 0; i < len; i++) {
if (value[i] === ',') {
commas++;
}
if (commas === 3) {
break;
}
}
if (opacity.hasValue() && this.isString() && commas !== 3) {
const color = new RGBColor(value);
if (color.ok) {
color.alpha = opacity.getNumber();
value = color.toRGBA();
}
}
return new Property(this.document, this.name, value);
}
}
Property.textBaselineMapping = {
'baseline': 'alphabetic',
'before-edge': 'top',
'text-before-edge': 'top',
'middle': 'middle',
'central': 'middle',
'after-edge': 'bottom',
'text-after-edge': 'bottom',
'ideographic': 'ideographic',
'alphabetic': 'alphabetic',
'hanging': 'hanging',
'mathematical': 'alphabetic'
};
class ViewPort {
constructor() {
this.viewPorts = [];
}
clear() {
this.viewPorts = [];
}
setCurrent(width, height) {
this.viewPorts.push({
width,
height
});
}
removeCurrent() {
this.viewPorts.pop();
}
getCurrent() {
const { viewPorts } = this;
return viewPorts[viewPorts.length - 1];
}
get width() {
return this.getCurrent().width;
}
get height() {
return this.getCurrent().height;
}
computeSize(d) {
if (typeof d === 'number') {
return d;
}
if (d === 'x') {
return this.width;
}
if (d === 'y') {
return this.height;
}
return Math.sqrt(Math.pow(this.width, 2) + Math.pow(this.height, 2)) / Math.sqrt(2);
}
}
class Point {
constructor(x, y) {
this.x = x;
this.y = y;
}
static parse(point, defaultValue = 0) {
const [x = defaultValue, y = defaultValue] = toNumbers(point);
return new Point(x, y);
}
static parseScale(scale, defaultValue = 1) {
const [x = defaultValue, y = x] = toNumbers(scale);
return new Point(x, y);
}
static parsePath(path) {
const points = toNumbers(path);
const len = points.length;
const pathPoints = [];
for (let i = 0; i < len; i += 2) {
pathPoints.push(new Point(points[i], points[i + 1]));
}
return pathPoints;
}
angleTo(point) {
return Math.atan2(point.y - this.y, point.x - this.x);
}
applyTransform(transform) {
const { x, y } = this;
const xp = x * transform[0] + y * transform[2] + transform[4];
const yp = x * transform[1] + y * transform[3] + transform[5];
this.x = xp;
this.y = yp;
}
}
class Mouse {
constructor(screen) {
this.screen = screen;
this.working = false;
this.events = [];
this.eventElements = [];
// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
this.onClick = this.onClick.bind(this);
// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
this.onMouseMove = this.onMouseMove.bind(this);
}
isWorking() {
return this.working;
}
start() {
if (this.working) {
return;
}
const { screen, onClick, onMouseMove } = this;
const canvas = screen.ctx.canvas;
canvas.onclick = onClick;
canvas.onmousemove = onMouseMove;
this.working = true;
}
stop() {
if (!this.working) {
return;
}
const canvas = this.screen.ctx.canvas;
this.working = false;
canvas.onclick = null;
canvas.onmousemove = null;
}
hasEvents() {
return this.working && this.events.length > 0;
}
runEvents() {
if (!this.working) {
return;
}
const { screen: document, events, eventElements } = this;
const { style } = document.ctx.canvas;
if (style) {
style.cursor = '';
}
events.forEach(({ run }, i) => {
let element = eventElements[i];
while (element) {
run(element);
element = element.parent;
}
});
// done running, clear
this.events = [];
this.eventElements = [];
}
checkPath(element, ctx) {
if (!this.working || !ctx) {
return;
}
const { events, eventElements } = this;
events.forEach(({ x, y }, i) => {
if (!eventElements[i] && ctx.isPointInPath && ctx.isPointInPath(x, y)) {
eventElements[i] = element;
}
});
}
checkBoundingBox(element, boundingBox) {
if (!this.working || !boundingBox) {
return;
}
const { events, eventElements } = this;
events.forEach(({ x, y }, i) => {
if (!eventElements[i] && boundingBox.isPointInBox(x, y)) {
eventElements[i] = element;
}
});
}
mapXY(x, y) {
const { window, ctx } = this.screen;
const point = new Point(x, y);
let element = ctx.canvas;
while (element) {
point.x -= element.offsetLeft;
point.y -= element.offsetTop;
element = element.offsetParent;
}
if (window.scrollX) {
point.x += window.scrollX;
}
if (window.scrollY) {
point.y += window.scrollY;
}
return point;
}
onClick(event) {
const { x, y } = this.mapXY(event.clientX, event.clientY);
this.events.push({
type: 'onclick',
x,
y,
run(eventTarget) {
if (eventTarget.onClick) {
eventTarget.onClick();
}
}
});
}
onMouseMove(event) {
const { x, y } = this.mapXY(event.clientX, event.clientY);
this.events.push({
type: 'onmousemove',
x,
y,
run(eventTarget) {
if (eventTarget.onMouseMove) {
eventTarget.onMouseMove();
}
}
});
}
}
const defaultWindow = typeof window !== 'undefined'
? window
: null;
const defaultFetch$1 = typeof fetch !== 'undefined'
? fetch.bind(undefined) // `fetch` depends on context: `someObject.fetch(...)` will throw error.
: null;
class Screen {
constructor(ctx, { fetch = defaultFetch$1, window = defaultWindow } = {}) {
this.ctx = ctx;
this.FRAMERATE = 30;
this.MAX_VIRTUAL_PIXELS = 30000;
this.CLIENT_WIDTH = 800;
this.CLIENT_HEIGHT = 600;
this.viewPort = new ViewPort();
this.mouse = new Mouse(this);
this.animations = [];
this.waits = [];
this.frameDuration = 0;
this.isReadyLock = false;
this.isFirstRender = true;
this.intervalId = null;
this.window = window;
this.fetch = fetch;
}
wait(checker) {
this.waits.push(checker);
}
ready() {
// eslint-disable-next-line @typescript-eslint/no-misused-promises
if (!this.readyPromise) {
return Promise.resolve();
}
return this.readyPromise;
}
isReady() {
if (this.isReadyLock) {
return true;
}
const isReadyLock = this.waits.every(_ => _());
if (isReadyLock) {
this.waits = [];
if (this.resolveReady) {
this.resolveReady();
}
}
this.isReadyLock = isReadyLock;
return isReadyLock;
}
setDefaults(ctx) {
// initial values and defaults
ctx.strokeStyle = 'rgba(0,0,0,0)';
ctx.lineCap = 'butt';
ctx.lineJoin = 'miter';
ctx.miterLimit = 4;
}
setViewBox({ document, ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX = 0, minY = 0, refX, refY, clip = false, clipX = 0, clipY = 0 }) {
// aspect ratio - http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
const cleanAspectRatio = compressSpaces(aspectRatio).replace(/^defer\s/, ''); // ignore defer
const [aspectRatioAlign, aspectRatioMeetOrSlice] = cleanAspectRatio.split(' ');
const align = aspectRatioAlign || 'xMidYMid';
const meetOrSlice = aspectRatioMeetOrSlice || 'meet';
// calculate scale
const scaleX = width / desiredWidth;
const scaleY = height / desiredHeight;
const scaleMin = Math.min(scaleX, scaleY);
const scaleMax = Math.max(scaleX, scaleY);
let finalDesiredWidth = desiredWidth;
let finalDesiredHeight = desiredHeight;
if (meetOrSlice === 'meet') {
finalDesiredWidth *= scaleMin;
finalDesiredHeight *= scaleMin;
}
if (meetOrSlice === 'slice') {
finalDesiredWidth *= scaleMax;
finalDesiredHeight *= scaleMax;
}
const refXProp = new Property(document, 'refX', refX);
const refYProp = new Property(document, 'refY', refY);
const hasRefs = refXProp.hasValue() && refYProp.hasValue();
if (hasRefs) {
ctx.translate(-scaleMin * refXProp.getPixels('x'), -scaleMin * refYProp.getPixels('y'));
}
if (clip) {
const scaledClipX = scaleMin * clipX;
const scaledClipY = scaleMin * clipY;
ctx.beginPath();
ctx.moveTo(scaledClipX, scaledClipY);
ctx.lineTo(width, scaledClipY);
ctx.lineTo(width, height);
ctx.lineTo(scaledClipX, height);
ctx.closePath();
ctx.clip();
}
if (!hasRefs) {
const isMeetMinY = meetOrSlice === 'meet' && scaleMin === scaleY;
const isSliceMaxY = meetOrSlice === 'slice' && scaleMax === scaleY;
const isMeetMinX = meetOrSlice === 'meet' && scaleMin === scaleX;
const isSliceMaxX = meetOrSlice === 'slice' && scaleMax === scaleX;
if (align.startsWith('xMid') && (isMeetMinY || isSliceMaxY)) {
ctx.translate(width / 2.0 - finalDesiredWidth / 2.0, 0);
}
if (align.endsWith('YMid') && (isMeetMinX || isSliceMaxX)) {
ctx.translate(0, height / 2.0 - finalDesiredHeight / 2.0);
}
if (align.startsWith('xMax') && (isMeetMinY || isSliceMaxY)) {
ctx.translate(width - finalDesiredWidth, 0);
}
if (align.endsWith('YMax') && (isMeetMinX || isSliceMaxX)) {
ctx.translate(0, height - finalDesiredHeight);
}
}
// scale
switch (true) {
case align === 'none':
ctx.scale(scaleX, scaleY);
break;
case meetOrSlice === 'meet':
ctx.scale(scaleMin, scaleMin);
break;
case meetOrSlice === 'slice':
ctx.scale(scaleMax, scaleMax);
break;
}
// translate
ctx.translate(-minX, -minY);
}
start(element, { enableRedraw = false, ignoreMouse = false, ignoreAnimation = false, ignoreDimensions = false, ignoreClear = false, forceRedraw, scaleWidth, scaleHeight, offsetX, offsetY } = {}) {
const { FRAMERATE, mouse } = this;
const frameDuration = 1000 / FRAMERATE;
this.frameDuration = frameDuration;
this.readyPromise = new Promise((resolve) => {
this.resolveReady = resolve;
});
if (this.isReady()) {
this.render(element, ignoreDimensions, ignoreClear, scaleWidth, scaleHeight, offsetX, offsetY);
}
if (!enableRedraw) {
return;
}
let now = Date.now();
let then = now;
let delta = 0;
const tick = () => {
now = Date.now();
delta = now - then;
if (delta >= frameDuration) {
then = now - (delta % frameDuration);
if (this.shouldUpdate(ignoreAnimation, forceRedraw)) {
this.render(element, ignoreDimensions, ignoreClear, scaleWidth, scaleHeight, offsetX, offsetY);
mouse.runEvents();
}
}
this.intervalId = requestAnimationFrame(tick);
};
if (!ignoreMouse) {
mouse.start();
}
this.intervalId = requestAnimationFrame(tick);
}
stop() {
if (this.intervalId) {
requestAnimationFrame.cancel(this.intervalId);
this.intervalId = null;
}
this.mouse.stop();
}
shouldUpdate(ignoreAnimation, forceRedraw) {
// need update from animations?
if (!ignoreAnimation) {
const { frameDuration } = this;
const shouldUpdate = this.animations.reduce((shouldUpdate, animation) => animation.update(frameDuration) || shouldUpdate, false);
if (shouldUpdate) {
return true;
}
}
// need update from redraw?
if (typeof forceRedraw === 'function' && forceRedraw()) {
return true;
}
if (!this.isReadyLock && this.isReady()) {
return true;
}
// need update from mouse events?
if (this.mouse.hasEvents()) {
return true;
}
return false;
}
render(element, ignoreDimensions, ignoreClear, scaleWidth, scaleHeight, offsetX, offsetY) {
const { CLIENT_WIDTH, CLIENT_HEIGHT, viewPort, ctx, isFirstRender } = this;
const canvas = ctx.canvas;
viewPort.clear();
if (canvas.width && canvas.height) {
viewPort.setCurrent(canvas.width, canvas.height);
}
else {
viewPort.setCurrent(CLIENT_WIDTH, CLIENT_HEIGHT);
}
const widthStyle = element.getStyle('width');
const heightStyle = element.getStyle('height');
if (!ignoreDimensions && (isFirstRender
|| typeof scaleWidth !== 'number' && typeof scaleHeight !== 'number')) {
// set canvas size
if (widthStyle.hasValue()) {
canvas.width = widthStyle.getPixels('x');
if (canvas.style) {
canvas.style.width = `${canvas.width}px`;
}
}
if (heightStyle.hasValue()) {
canvas.height = heightStyle.getPixels('y');
if (canvas.style) {
canvas.style.height = `${canvas.height}px`;
}
}
}
let cWidth = canvas.clientWidth || canvas.width;
let cHeight = canvas.clientHeight || canvas.height;
if (ignoreDimensions && widthStyle.hasValue() && heightStyle.hasValue()) {
cWidth = widthStyle.getPixels('x');
cHeight = heightStyle.getPixels('y');
}
viewPort.setCurrent(cWidth, cHeight);
if (typeof offsetX === 'number') {
element.getAttribute('x', true).setValue(offsetX);
}
if (typeof offsetY === 'number') {
element.getAttribute('y', true).setValue(offsetY);
}
if (typeof scaleWidth === 'number'
|| typeof scaleHeight === 'number') {
const viewBox = toNumbers(element.getAttribute('viewBox').getString());
let xRatio = 0;
let yRatio = 0;
if (typeof scaleWidth === 'number') {
const widthStyle = element.getStyle('width');
if (widthStyle.hasValue()) {
xRatio = widthStyle.getPixels('x') / scaleWidth;
}
else if (!isNaN(viewBox[2])) {
xRatio = viewBox[2] / scaleWidth;
}
}
if (typeof scaleHeight === 'number') {
const heightStyle = element.getStyle('height');
if (heightStyle.hasValue()) {
yRatio = heightStyle.getPixels('y') / scaleHeight;
}
else if (!isNaN(viewBox[3])) {
yRatio = viewBox[3] / scaleHeight;
}
}
if (!xRatio) {
xRatio = yRatio;
}
if (!yRatio) {
yRatio = xRatio;
}
element.getAttribute('width', true).setValue(scaleWidth);
element.getAttribute('height', true).setValue(scaleHeight);
const transformStyle = element.getStyle('transform', true, true);
transformStyle.setValue(`${transformStyle.getString()} scale(${1.0 / xRatio}, ${1.0 / yRatio})`);
}
// clear and render
if (!ignoreClear) {
ctx.clearRect(0, 0, cWidth, cHeight);
}
element.render(ctx);
if (isFirstRender) {
this.isFirstRender = false;
}
}
}
Screen.defaultWindow = defaultWindow;
Screen.defaultFetch = defaultFetch$1;
const { defaultFetch } = Screen;
const DefaultDOMParser = typeof DOMParser !== 'undefined'
? DOMParser
: null;
class Parser {
constructor({ fetch = defaultFetch, DOMParser = DefaultDOMParser } = {}) {
this.fetch = fetch;
this.DOMParser = DOMParser;
}
async parse(resource) {
if (resource.startsWith('<')) {
return this.parseFromString(resource);
}
return this.load(resource);
}
parseFromString(xml) {
const parser = new this.DOMParser();
try {
return this.checkDocument(parser.parseFromString(xml, 'image/svg+xml'));
}
catch (err) {
return this.checkDocument(parser.parseFromString(xml, 'text/xml'));
}
}
checkDocument(document) {
const parserError = document.getElementsByTagName('parsererror')[0];
if (parserError) {
throw new Error(parserError.textContent);
}
return document;
}
async load(url) {
const response = await this.fetch(url);
const xml = await response.text();
return this.parseFromString(xml);
}
}
class Translate {
constructor(_, point) {
this.type = 'translate';
this.point = null;
this.point = Point.parse(point);
}
apply(ctx) {
const { x, y } = this.point;
ctx.translate(x || 0.0, y || 0.0);
}
unapply(ctx) {
const { x, y } = this.point;
ctx.translate(-1.0 * x || 0.0, -1.0 * y || 0.0);
}
applyToPoint(point) {
const { x, y } = this.point;
point.applyTransform([
1,
0,
0,
1,
x || 0.0,
y || 0.0
]);
}
}
class Rotate {
constructor(document, rotate, transformOrigin) {
this.type = 'rotate';
this.angle = null;
this.originX = null;
this.originY = null;
this.cx = 0;
this.cy = 0;
const numbers = toNumbers(rotate);
this.angle = new Property(document, 'angle', numbers[0]);
this.originX = transformOrigin[0];
this.originY = transformOrigin[1];
this.cx = numbers[1] || 0;
this.cy = numbers[2] || 0;
}
apply(ctx) {
const { cx, cy, originX, originY, angle } = this;
const tx = cx + originX.getPixels('x');
const ty = cy + originY.getPixels('y');
ctx.translate(tx, ty);
ctx.rotate(angle.getRadians());
ctx.translate(-tx, -ty);
}
unapply(ctx) {
const { cx, cy, originX, originY, angle } = this;
const tx = cx + originX.getPixels('x');
const ty = cy + originY.getPixels('y');
ctx.translate(tx, ty);
ctx.rotate(-1.0 * angle.getRadians());
ctx.translate(-tx, -ty);
}
applyToPoint(point) {
const { cx, cy, angle } = this;
const rad = angle.getRadians();
point.applyTransform([
1,
0,
0,
1,
cx || 0.0,
cy || 0.0 // this.p.y
]);
point.applyTransform([
Math.cos(rad),
Math.sin(rad),
-Math.sin(rad),
Math.cos(rad),
0,
0
]);
point.applyTransform([
1,
0,
0,
1,
-cx || 0.0,
-cy || 0.0 // -this.p.y
]);
}
}
class Scale {
constructor(_, scale, transformOrigin) {
this.type = 'scale';
this.scale = null;
this.originX = null;
this.originY = null;
const scaleSize = Point.parseScale(scale);
// Workaround for node-canvas
if (scaleSize.x === 0
|| scaleSize.y === 0) {
scaleSize.x = PSEUDO_ZERO;
scaleSize.y = PSEUDO_ZERO;
}
this.scale = scaleSize;
this.originX = transformOrigin[0];
this.originY = transformOrigin[1];
}
apply(ctx) {
const { scale: { x, y }, originX, originY } = this;
const tx = originX.getPixels('x');
const ty = originY.getPixels('y');
ctx.translate(tx, ty);
ctx.scale(x, y || x);
ctx.translate(-tx, -ty);
}
unapply(ctx) {
const { scale: { x, y }, originX, originY } = this;
const tx = originX.getPixels('x');
const ty = originY.getPixels('y');
ctx.translate(tx, ty);
ctx.scale(1.0 / x, 1.0 / y || x);
ctx.translate(-tx, -ty);
}
applyToPoint(point) {
const { x, y } = this.scale;
point.applyTransform([
x || 0.0,
0,
0,
y || 0.0,
0,
0
]);
}
}
class Matrix {
constructor(_, matrix, transformOrigin) {
this.type = 'matrix';
this.matrix = [];
this.originX = null;
this.originY = null;
this.matrix = toNumbers(matrix);
this.originX = transformOrigin[0];
this.originY = transformOrigin[1];
}
apply(ctx) {
const { originX, originY, matrix } = this;
const tx = originX.getPixels('x');
const ty = originY.getPixels('y');
ctx.translate(tx, ty);
ctx.transform(matrix[0], matrix[1], matrix[2], matrix[3], matrix[4], matrix[5]);
ctx.translate(-tx, -ty);
}
unapply(ctx) {
const { originX, originY, matrix } = this;
const a = matrix[0];
const b = matrix[2];
const c = matrix[4];
const d = matrix[1];
const e = matrix[3];
const f = matrix[5];
const g = 0.0;
const h = 0.0;
const i = 1.0;
const det = 1 / (a * (e * i - f * h) - b * (d * i - f * g) + c * (d * h - e * g));
const tx = originX.getPixels('x');
const ty = originY.getPixels('y');
ctx.translate(tx, ty);
ctx.transform(det * (e * i - f * h), det * (f * g - d * i), det * (c * h - b * i), det * (a * i - c * g), det * (b * f - c * e), det * (c * d - a * f));
ctx.translate(-tx, -ty);
}
applyToPoint(point) {
point.applyTransform(this.matrix);
}
}
class Skew extends Matrix {
constructor(document, skew, transformOrigin) {
super(document, skew, transformOrigin);
this.type = 'skew';
this.angle = null;
this.angle = new Property(document, 'angle', skew);
}
}
class SkewX extends Skew {
constructor(document, skew, transformOrigin) {
super(document, skew, transformOrigin);
this.type = 'skewX';
this.matrix = [
1,
0,
Math.tan(this.angle.getRadians()),
1,
0,
0
];
}
}
class SkewY extends Skew {
constructor(document, skew, transformOrigin) {
super(document, skew, transformOrigin);
this.type = 'skewY';
this.matrix = [
1,
Math.tan(this.angle.getRadians()),
0,
1,
0,
0
];
}
}
function parseTransforms(transform) {
return compressSpaces(transform)
.trim()
.replace(/\)([a-zA-Z])/g, ') $1')
.replace(/\)(\s?,\s?)/g, ') ')
.split(/\s(?=[a-z])/);
}
function parseTransform(transform) {
const [type, value] = transform.split('(');
return [
type.trim(),
value.trim().replace(')', '')
];
}
class Transform {
constructor(document, transform, transformOrigin) {
this.document = document;
this.transforms = [];
const data = parseTransforms(transform);
data.forEach((transform) => {
if (transform === 'none') {
return;
}
const [type, value] = parseTransform(transform);
const TransformType = Transform.transformTypes[type];
if (typeof TransformType !== 'undefined') {
this.transforms.push(new TransformType(this.document, value, transformOrigin));
}
});
}
static fromElement(document, element) {
const transformStyle = element.getStyle('transform', false, true);
const [transformOriginXProperty, transformOriginYProperty = transformOriginXProperty] = element.getStyle('transform-origin', false, true).split();
const transformOrigin = [
transformOriginXProperty,
transformOriginYProperty
];
if (transformStyle.hasValue()) {
return new Transform(document, transformStyle.getString(), transformOrigin);
}
return null;
}
apply(ctx) {
const { transforms } = this;
const len = transforms.length;
for (let i = 0; i < len; i++) {
transforms[i].apply(ctx);
}
}
unapply(ctx) {
const { transforms } = this;
const len = transforms.length;
for (let i = len - 1; i >= 0; i--) {
transforms[i].unapply(ctx);
}
}
// TODO: applyToPoint unused ... remove?
applyToPoint(point) {
const { transforms } = this;
const len = transforms.length;
for (let i = 0; i < len; i++) {
transforms[i].applyToPoint(point);
}
}
}
Transform.transformTypes = {
translate: Translate,
rotate: Rotate,
scale: Scale,
matrix: Matrix,
skewX: SkewX,
skewY: SkewY
};
class Element {
constructor(document, node, captureTextNodes = false) {
this.document = document;
this.node = node;
this.captureTextNodes = captureTextNodes;
this.attributes = {};
this.styles = {};
this.stylesSpecificity = {};
this.animationFrozen = false;
this.animationFrozenValue = '';
this.parent = null;
this.children = [];
if (!node || node.nodeType !== 1) { // ELEMENT_NODE
return;
}
// add attributes
Array.from(node.attributes).forEach((attribute) => {
const nodeName = normalizeAttributeName(attribute.nodeName);
this.attributes[nodeName] = new Property(document, nodeName, attribute.value);
});
this.addStylesFromStyleDefinition();
// add inline styles
if (this.getAttribute('style').hasValue()) {
const styles = this.getAttribute('style')
.getString()
.split(';')
.map(_ => _.trim());
styles.forEach((style) => {
if (!style) {
return;
}
const [name, value] = style.split(':').map(_ => _.trim());
this.styles[name] = new Property(document, name, value);
});
}
const { definitions } = document;
const id = this.getAttribute('id');
// add id
if (id.hasValue()) {
if (!definitions[id.getString()]) {
definitions[id.getString()] = this;
}
}
Array.from(node.childNodes).forEach((childNode) => {
if (childNode.nodeType === 1) {
this.addChild(childNode); // ELEMENT_NODE
}
else if (captureTextNodes && (childNode.nodeType === 3
|| childNode.nodeType === 4)) {
const textNode = document.createTextNode(childNode);
if (textNode.getText().length > 0) {
this.addChild(textNode); // TEXT_NODE
}
}
});
}
getAttribute(name, createIfNotExists = false) {
const attr = this.attributes[name];
if (!attr && createIfNotExists) {
const attr = new Property(this.document, name, '');
this.attributes[name] = attr;
return attr;
}
return attr || Property.empty(this.document);
}
getHrefAttribute() {
for (const key in this.attributes) {
if (key === 'href' || key.endsWith(':href')) {
return this.attributes[key];
}
}
return Property.empty(this.document);
}
getStyle(name, createIfNotExists = false, skipAncestors = false) {
const style = this.styles[name];
if (style) {
return style;
}
const attr = this.getAttribute(name);
if (attr?.hasValue()) {
this.styles[name] = attr; // move up to me to cache
return attr;
}
if (!skipAncestors) {
const { parent } = this;
if (parent) {
const parentStyle = parent.getStyle(name);
if (parentStyle?.hasValue()) {
return parentStyle;
}
}
}
if (createIfNotExists) {
const style = new Property(this.document, name, '');
this.styles[name] = style;
return style;
}
return style || Property.empty(this.document);
}
render(ctx) {
// don't render display=none
// don't render visibility=hidden
if (this.getStyle('display').getString() === 'none'
|| this.getStyle('visibility').getString() === 'hidden') {
return;
}
ctx.save();
if (this.getStyle('mask').hasValue()) { // mask
const mask = this.getStyle('mask').getDefinition();
if (mask) {
this.applyEffects(ctx);
mask.apply(ctx, this);
}
}
else if (this.getStyle('filter').getValue('none') !== 'none') { // filter
const filter = this.getStyle('filter').getDefinition();
if (filter) {
this.applyEffects(ctx);
filter.apply(ctx, this);
}
}
else {
this.setContext(ctx);
this.renderChildren(ctx);
this.clearContext(ctx);
}
ctx.restore();
}
setContext(_) {
// NO RENDER
}
applyEffects(ctx) {
// transform
const transform = Transform.fromElement(this.document, this);
if (transform) {
transform.apply(ctx);
}
// clip
const clipPathStyleProp = this.getStyle('clip-path', false, true);
if (clipPathStyleProp.hasValue()) {
const clip = clipPathStyleProp.getDefinition();
if (clip) {
clip.apply(ctx);
}
}
}
clearContext(_) {
// NO RENDER
}
renderChildren(ctx) {
this.children.forEach((child) => {
child.render(ctx);
});
}
addChild(childNode) {
const child = childNode instanceof Element
? childNode
: this.document.createElement(childNode);
child.parent = this;
if (!Element.ignoreChildTypes.includes(child.type)) {
this.children.push(child);
}
}
matchesSelector(selector) {
const { node } = this;
if (typeof node.matches === 'function') {
return node.matches(selector);
}
const styleClasses = node.getAttribute?.('class');
if (!styleClasses || styleClasses === '') {
return false;
}
return styleClasses.split(' ').some(styleClass => `.${styleClass}` === selector);
}
addStylesFromStyleDefinition() {
const { styles, stylesSpecificity } = this.document;
for (const selector in styles) {
if (!selector.startsWith('@') && this.matchesSelector(selector)) {
const style = styles[selector];
const specificity = stylesSpecificity[selector];
if (style) {
for (const name in style) {
let existingSpecificity = this.stylesSpecificity[name];
if (typeof existingSpecificity === 'undefined') {
existingSpecificity = '000';
}
if (specificity >= existingSpecificity) {
this.styles[name] = style[name];
this.stylesSpecificity[name] = specificity;
}
}
}
}
}
}
removeStyles(element, ignoreStyles) {
const toRestore = ignoreStyles.reduce((toRestore, name) => {
const styleProp = element.getStyle(name);
if (!styleProp.hasValue()) {
return toRestore;
}
const value = styleProp.getString();
styleProp.setValue('');
return [
...toRestore,
[name, value]
];
}, []);
return toRestore;
}
restoreStyles(element, styles) {
styles.forEach(([name, value]) => {
element.getStyle(name, true).setValue(value);
});
}
isFirstChild() {
return this.parent?.children.indexOf(this) === 0;
}
}
Element.ignoreChildTypes = [
'title'
];
class UnknownElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
}
}
function wrapFontFamily(fontFamily) {
const trimmed = fontFamily.trim();
return /^('|")/.test(trimmed)
? trimmed
: `"${trimmed}"`;
}
function prepareFontFamily(fontFamily) {
return typeof process === 'undefined'
? fontFamily
: fontFamily
.trim()
.split(',')
.map(wrapFontFamily)
.join(',');
}
/**
* https://developer.mozilla.org/en-US/docs/Web/CSS/font-style
* @param fontStyle
* @returns CSS font style.
*/
function prepareFontStyle(fontStyle) {
if (!fontStyle) {
return '';
}
const targetFontStyle = fontStyle.trim().toLowerCase();
switch (targetFontStyle) {
case 'normal':
case 'italic':
case 'oblique':
case 'inherit':
case 'initial':
case 'unset':
return targetFontStyle;
default:
if (/^oblique\s+(-|)\d+deg$/.test(targetFontStyle)) {
return targetFontStyle;
}
return '';
}
}
/**
* https://developer.mozilla.org/en-US/docs/Web/CSS/font-weight
* @param fontWeight
* @returns CSS font weight.
*/
function prepareFontWeight(fontWeight) {
if (!fontWeight) {
return '';
}
const targetFontWeight = fontWeight.trim().toLowerCase();
switch (targetFontWeight) {
case 'normal':
case 'bold':
case 'lighter':
case 'bolder':
case 'inherit':
case 'initial':
case 'unset':
return targetFontWeight;
default:
if (/^[\d.]+$/.test(targetFontWeight)) {
return targetFontWeight;
}
return '';
}
}
class Font {
constructor(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
const inheritFont = inherit
? typeof inherit === 'string'
? Font.parse(inherit)
: inherit
: {};
this.fontFamily = fontFamily || inheritFont.fontFamily;
this.fontSize = fontSize || inheritFont.fontSize;
this.fontStyle = fontStyle || inheritFont.fontStyle;
this.fontWeight = fontWeight || inheritFont.fontWeight;
this.fontVariant = fontVariant || inheritFont.fontVariant;
}
static parse(font = '', inherit) {
let fontStyle = '';
let fontVariant = '';
let fontWeight = '';
let fontSize = '';
let fontFamily = '';
const parts = compressSpaces(font).trim().split(' ');
const set = {
fontSize: false,
fontStyle: false,
fontWeight: false,
fontVariant: false
};
parts.forEach((part) => {
switch (true) {
case !set.fontStyle && Font.styles.includes(part):
if (part !== 'inherit') {
fontStyle = part;
}
set.fontStyle = true;
break;
case !set.fontVariant && Font.variants.includes(part):
if (part !== 'inherit') {
fontVariant = part;
}
set.fontStyle = true;
set.fontVariant = true;
break;
case !set.fontWeight && Font.weights.includes(part):
if (part !== 'inherit') {
fontWeight = part;
}
set.fontStyle = true;
set.fontVariant = true;
set.fontWeight = true;
break;
case !set.fontSize:
if (part !== 'inherit') {
[fontSize] = part.split('/');
}
set.fontStyle = true;
set.fontVariant = true;
set.fontWeight = true;
set.fontSize = true;
break;
default:
if (part !== 'inherit') {
fontFamily += part;
}
}
});
return new Font(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit);
}
toString() {
return [
prepareFontStyle(this.fontStyle),
this.fontVariant,
prepareFontWeight(this.fontWeight),
this.fontSize,
// Wrap fontFamily only on nodejs and only for canvas.ctx
prepareFontFamily(this.fontFamily)
].join(' ').trim();
}
}
Font.styles = 'normal|italic|oblique|inherit';
Font.variants = 'normal|small-caps|inherit';
Font.weights = 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit';
class BoundingBox {
constructor(x1 = Number.NaN, y1 = Number.NaN, x2 = Number.NaN, y2 = Number.NaN) {
this.x1 = x1;
this.y1 = y1;
this.x2 = x2;
this.y2 = y2;
this.addPoint(x1, y1);
this.addPoint(x2, y2);
}
get x() {
return this.x1;
}
get y() {
return this.y1;
}
get width() {
return this.x2 - this.x1;
}
get height() {
return this.y2 - this.y1;
}
addPoint(x, y) {
if (typeof x !== 'undefined') {
if (isNaN(this.x1) || isNaN(this.x2)) {
this.x1 = x;
this.x2 = x;
}
if (x < this.x1) {
this.x1 = x;
}
if (x > this.x2) {
this.x2 = x;
}
}
if (typeof y !== 'undefined') {
if (isNaN(this.y1) || isNaN(this.y2)) {
this.y1 = y;
this.y2 = y;
}
if (y < this.y1) {
this.y1 = y;
}
if (y > this.y2) {
this.y2 = y;
}
}
}
addX(x) {
this.addPoint(x, null);
}
addY(y) {
this.addPoint(null, y);
}
addBoundingBox(boundingBox) {
if (!boundingBox) {
return;
}
const { x1, y1, x2, y2 } = boundingBox;
this.addPoint(x1, y1);
this.addPoint(x2, y2);
}
sumCubic(t, p0, p1, p2, p3) {
return (Math.pow(1 - t, 3) * p0
+ 3 * Math.pow(1 - t, 2) * t * p1
+ 3 * (1 - t) * Math.pow(t, 2) * p2
+ Math.pow(t, 3) * p3);
}
bezierCurveAdd(forX, p0, p1, p2, p3) {
const b = 6 * p0 - 12 * p1 + 6 * p2;
const a = -3 * p0 + 9 * p1 - 9 * p2 + 3 * p3;
const c = 3 * p1 - 3 * p0;
if (a === 0) {
if (b === 0) {
return;
}
const t = -c / b;
if (0 < t && t < 1) {
if (forX) {
this.addX(this.sumCubic(t, p0, p1, p2, p3));
}
else {
this.addY(this.sumCubic(t, p0, p1, p2, p3));
}
}
return;
}
const b2ac = Math.pow(b, 2) - 4 * c * a;
if (b2ac < 0) {
return;
}
const t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
if (0 < t1 && t1 < 1) {
if (forX) {
this.addX(this.sumCubic(t1, p0, p1, p2, p3));
}
else {
this.addY(this.sumCubic(t1, p0, p1, p2, p3));
}
}
const t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
if (0 < t2 && t2 < 1) {
if (forX) {
this.addX(this.sumCubic(t2, p0, p1, p2, p3));
}
else {
this.addY(this.sumCubic(t2, p0, p1, p2, p3));
}
}
}
// from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
addBezierCurve(p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
this.addPoint(p0x, p0y);
this.addPoint(p3x, p3y);
this.bezierCurveAdd(true, p0x, p1x, p2x, p3x);
this.bezierCurveAdd(false, p0y, p1y, p2y, p3y);
}
addQuadraticCurve(p0x, p0y, p1x, p1y, p2x, p2y) {
const cp1x = p0x + 2 / 3 * (p1x - p0x); // CP1 = QP0 + 2/3 *(QP1-QP0)
const cp1y = p0y + 2 / 3 * (p1y - p0y); // CP1 = QP0 + 2/3 *(QP1-QP0)
const cp2x = cp1x + 1 / 3 * (p2x - p0x); // CP2 = CP1 + 1/3 *(QP2-QP0)
const cp2y = cp1y + 1 / 3 * (p2y - p0y); // CP2 = CP1 + 1/3 *(QP2-QP0)
this.addBezierCurve(p0x, p0y, cp1x, cp2x, cp1y, cp2y, p2x, p2y);
}
isPointInBox(x, y) {
const { x1, y1, x2, y2 } = this;
return (x1 <= x
&& x <= x2
&& y1 <= y
&& y <= y2);
}
}
class PathParser extends SVGPathData {
constructor(path) {
super(path
// Fix spaces after signs.
.replace(/([+\-.])\s+/gm, '$1')
// Remove invalid part.
.replace(/[^MmZzLlHhVvCcSsQqTtAae\d\s.,+-].*/g, ''));
this.control = null;
this.start = null;
this.current = null;
this.command = null;
this.commands = this.commands;
this.i = -1;
this.previousCommand = null;
this.points = [];
this.angles = [];
}
reset() {
this.i = -1;
this.command = null;
this.previousCommand = null;
this.start = new Point(0, 0);
this.control = new Point(0, 0);
this.current = new Point(0, 0);
this.points = [];
this.angles = [];
}
isEnd() {
const { i, commands } = this;
return i >= commands.length - 1;
}
next() {
const command = this.commands[++this.i];
this.previousCommand = this.command;
this.command = command;
return command;
}
getPoint(xProp = 'x', yProp = 'y') {
const point = new Point(this.command[xProp], this.command[yProp]);
return this.makeAbsolute(point);
}
getAsControlPoint(xProp, yProp) {
const point = this.getPoint(xProp, yProp);
this.control = point;
return point;
}
getAsCurrentPoint(xProp, yProp) {
const point = this.getPoint(xProp, yProp);
this.current = point;
return point;
}
getReflectedControlPoint() {
const previousCommand = this.previousCommand.type;
if (previousCommand !== SVGPathData.CURVE_TO
&& previousCommand !== SVGPathData.SMOOTH_CURVE_TO
&& previousCommand !== SVGPathData.QUAD_TO
&& previousCommand !== SVGPathData.SMOOTH_QUAD_TO) {
return this.current;
}
// reflect point
const { current: { x: cx, y: cy }, control: { x: ox, y: oy } } = this;
const point = new Point(2 * cx - ox, 2 * cy - oy);
return point;
}
makeAbsolute(point) {
if (this.command.relative) {
const { x, y } = this.current;
point.x += x;
point.y += y;
}
return point;
}
addMarker(point, from, priorTo) {
const { points, angles } = this;
// if the last angle isn't filled in because we didn't have this point yet ...
if (priorTo && angles.length > 0 && !angles[angles.length - 1]) {
angles[angles.length - 1] = points[points.length - 1].angleTo(priorTo);
}
this.addMarkerAngle(point, from ? from.angleTo(point) : null);
}
addMarkerAngle(point, angle) {
this.points.push(point);
this.angles.push(angle);
}
getMarkerPoints() {
return this.points;
}
getMarkerAngles() {
const { angles } = this;
const len = angles.length;
for (let i = 0; i < len; i++) {
if (!angles[i]) {
for (let j = i + 1; j < len; j++) {
if (angles[j]) {
angles[i] = angles[j];
break;
}
}
}
}
return angles;
}
}
class RenderedElement extends Element {
constructor() {
super(...arguments);
this.modifiedEmSizeStack = false;
}
calculateOpacity() {
let opacity = 1.0;
// eslint-disable-next-line @typescript-eslint/no-this-alias, consistent-this
let element = this;
while (element) {
const opacityStyle = element.getStyle('opacity', false, true); // no ancestors on style call
if (opacityStyle.hasValue(true)) {
opacity *= opacityStyle.getNumber();
}
element = element.parent;
}
return opacity;
}
setContext(ctx, fromMeasure = false) {
if (!fromMeasure) { // causes stack overflow when measuring text with gradients
// fill
const fillStyleProp = this.getStyle('fill');
const fillOpacityStyleProp = this.getStyle('fill-opacity');
const strokeStyleProp = this.getStyle('stroke');
const strokeOpacityProp = this.getStyle('stroke-opacity');
if (fillStyleProp.isUrlDefinition()) {
const fillStyle = fillStyleProp.getFillStyleDefinition(this, fillOpacityStyleProp);
if (fillStyle) {
ctx.fillStyle = fillStyle;
}
}
else if (fillStyleProp.hasValue()) {
if (fillStyleProp.getString() === 'currentColor') {
fillStyleProp.setValue(this.getStyle('color').getColor());
}
const fillStyle = fillStyleProp.getColor();
if (fillStyle !== 'inherit') {
ctx.fillStyle = fillStyle === 'none'
? 'rgba(0,0,0,0)'
: fillStyle;
}
}
if (fillOpacityStyleProp.hasValue()) {
const fillStyle = new Property(this.document, 'fill', ctx.fillStyle)
.addOpacity(fillOpacityStyleProp)
.getColor();
ctx.fillStyle = fillStyle;
}
// stroke
if (strokeStyleProp.isUrlDefinition()) {
const strokeStyle = strokeStyleProp.getFillStyleDefinition(this, strokeOpacityProp);
if (strokeStyle) {
ctx.strokeStyle = strokeStyle;
}
}
else if (strokeStyleProp.hasValue()) {
if (strokeStyleProp.getString() === 'currentColor') {
strokeStyleProp.setValue(this.getStyle('color').getColor());
}
const strokeStyle = strokeStyleProp.getString();
if (strokeStyle !== 'inherit') {
ctx.strokeStyle = strokeStyle === 'none'
? 'rgba(0,0,0,0)'
: strokeStyle;
}
}
if (strokeOpacityProp.hasValue()) {
const strokeStyle = new Property(this.document, 'stroke', ctx.strokeStyle)
.addOpacity(strokeOpacityProp)
.getString();
ctx.strokeStyle = strokeStyle;
}
const strokeWidthStyleProp = this.getStyle('stroke-width');
if (strokeWidthStyleProp.hasValue()) {
const newLineWidth = strokeWidthStyleProp.getPixels();
ctx.lineWidth = !newLineWidth
? PSEUDO_ZERO // browsers don't respect 0 (or node-canvas? :-)
: newLineWidth;
}
const strokeLinecapStyleProp = this.getStyle('stroke-linecap');
const strokeLinejoinStyleProp = this.getStyle('stroke-linejoin');
const strokeMiterlimitProp = this.getStyle('stroke-miterlimit');
// NEED TEST
// const pointOrderStyleProp = this.getStyle('paint-order');
const strokeDasharrayStyleProp = this.getStyle('stroke-dasharray');
const strokeDashoffsetProp = this.getStyle('stroke-dashoffset');
if (strokeLinecapStyleProp.hasValue()) {
ctx.lineCap = strokeLinecapStyleProp.getString();
}
if (strokeLinejoinStyleProp.hasValue()) {
ctx.lineJoin = strokeLinejoinStyleProp.getString();
}
if (strokeMiterlimitProp.hasValue()) {
ctx.miterLimit = strokeMiterlimitProp.getNumber();
}
// NEED TEST
// if (pointOrderStyleProp.hasValue()) {
// // ?
// ctx.paintOrder = pointOrderStyleProp.getValue();
// }
if (strokeDasharrayStyleProp.hasValue() && strokeDasharrayStyleProp.getString() !== 'none') {
const gaps = toNumbers(strokeDasharrayStyleProp.getString());
if (typeof ctx.setLineDash !== 'undefined') {
ctx.setLineDash(gaps);
}
else
// @ts-expect-error Handle browser prefix.
if (typeof ctx.webkitLineDash !== 'undefined') {
// @ts-expect-error Handle browser prefix.
ctx.webkitLineDash = gaps;
}
else
// @ts-expect-error Handle browser prefix.
if (typeof ctx.mozDash !== 'undefined' && !(gaps.length === 1 && gaps[0] === 0)) {
// @ts-expect-error Handle browser prefix.
ctx.mozDash = gaps;
}
const offset = strokeDashoffsetProp.getPixels();
if (typeof ctx.lineDashOffset !== 'undefined') {
ctx.lineDashOffset = offset;
}
else
// @ts-expect-error Handle browser prefix.
if (typeof ctx.webkitLineDashOffset !== 'undefined') {
// @ts-expect-error Handle browser prefix.
ctx.webkitLineDashOffset = offset;
}
else
// @ts-expect-error Handle browser prefix.
if (typeof ctx.mozDashOffset !== 'undefined') {
// @ts-expect-error Handle browser prefix.
ctx.mozDashOffset = offset;
}
}
}
// font
this.modifiedEmSizeStack = false;
if (typeof ctx.font !== 'undefined') {
const fontStyleProp = this.getStyle('font');
const fontStyleStyleProp = this.getStyle('font-style');
const fontVariantStyleProp = this.getStyle('font-variant');
const fontWeightStyleProp = this.getStyle('font-weight');
const fontSizeStyleProp = this.getStyle('font-size');
const fontFamilyStyleProp = this.getStyle('font-family');
const font = new Font(fontStyleStyleProp.getString(), fontVariantStyleProp.getString(), fontWeightStyleProp.getString(), fontSizeStyleProp.hasValue()
? `${fontSizeStyleProp.getPixels(true)}px`
: '', fontFamilyStyleProp.getString(), Font.parse(fontStyleProp.getString(), ctx.font));
fontStyleStyleProp.setValue(font.fontStyle);
fontVariantStyleProp.setValue(font.fontVariant);
fontWeightStyleProp.setValue(font.fontWeight);
fontSizeStyleProp.setValue(font.fontSize);
fontFamilyStyleProp.setValue(font.fontFamily);
ctx.font = font.toString();
if (fontSizeStyleProp.isPixels()) {
this.document.emSize = fontSizeStyleProp.getPixels();
this.modifiedEmSizeStack = true;
}
}
if (!fromMeasure) {
// effects
this.applyEffects(ctx);
// opacity
ctx.globalAlpha = this.calculateOpacity();
}
}
clearContext(ctx) {
super.clearContext(ctx);
if (this.modifiedEmSizeStack) {
this.document.popEmSize();
}
}
}
class PathElement extends RenderedElement {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'path';
this.pathParser = null;
this.pathParser = new PathParser(this.getAttribute('d').getString());
}
path(ctx) {
const { pathParser } = this;
const boundingBox = new BoundingBox();
pathParser.reset();
if (ctx) {
ctx.beginPath();
}
while (!pathParser.isEnd()) {
switch (pathParser.next().type) {
case PathParser.MOVE_TO:
this.pathM(ctx, boundingBox);
break;
case PathParser.LINE_TO:
this.pathL(ctx, boundingBox);
break;
case PathParser.HORIZ_LINE_TO:
this.pathH(ctx, boundingBox);
break;
case PathParser.VERT_LINE_TO:
this.pathV(ctx, boundingBox);
break;
case PathParser.CURVE_TO:
this.pathC(ctx, boundingBox);
break;
case PathParser.SMOOTH_CURVE_TO:
this.pathS(ctx, boundingBox);
break;
case PathParser.QUAD_TO:
this.pathQ(ctx, boundingBox);
break;
case PathParser.SMOOTH_QUAD_TO:
this.pathT(ctx, boundingBox);
break;
case PathParser.ARC:
this.pathA(ctx, boundingBox);
break;
case PathParser.CLOSE_PATH:
this.pathZ(ctx, boundingBox);
break;
}
}
return boundingBox;
}
getBoundingBox(_) {
return this.path();
}
getMarkers() {
const { pathParser } = this;
const points = pathParser.getMarkerPoints();
const angles = pathParser.getMarkerAngles();
const markers = points.map((point, i) => [
point,
angles[i]
]);
return markers;
}
renderChildren(ctx) {
this.path(ctx);
this.document.screen.mouse.checkPath(this, ctx);
const fillRuleStyleProp = this.getStyle('fill-rule');
if (ctx.fillStyle !== '') {
if (fillRuleStyleProp.getString('inherit') !== 'inherit') {
ctx.fill(fillRuleStyleProp.getString());
}
else {
ctx.fill();
}
}
if (ctx.strokeStyle !== '') {
if (this.getAttribute('vector-effect').getString() === 'non-scaling-stroke') {
ctx.save();
ctx.setTransform(1, 0, 0, 1, 0, 0);
ctx.stroke();
ctx.restore();
}
else {
ctx.stroke();
}
}
const markers = this.getMarkers();
if (markers) {
const markersLastIndex = markers.length - 1;
const markerStartStyleProp = this.getStyle('marker-start');
const markerMidStyleProp = this.getStyle('marker-mid');
const markerEndStyleProp = this.getStyle('marker-end');
if (markerStartStyleProp.isUrlDefinition()) {
const marker = markerStartStyleProp.getDefinition();
const [point, angle] = markers[0];
marker.render(ctx, point, angle);
}
if (markerMidStyleProp.isUrlDefinition()) {
const marker = markerMidStyleProp.getDefinition();
for (let i = 1; i < markersLastIndex; i++) {
const [point, angle] = markers[i];
marker.render(ctx, point, angle);
}
}
if (markerEndStyleProp.isUrlDefinition()) {
const marker = markerEndStyleProp.getDefinition();
const [point, angle] = markers[markersLastIndex];
marker.render(ctx, point, angle);
}
}
}
static pathM(pathParser) {
const point = pathParser.getAsCurrentPoint();
pathParser.start = pathParser.current;
return {
point
};
}
pathM(ctx, boundingBox) {
const { pathParser } = this;
const { point } = PathElement.pathM(pathParser);
const { x, y } = point;
pathParser.addMarker(point);
boundingBox.addPoint(x, y);
if (ctx) {
ctx.moveTo(x, y);
}
}
static pathL(pathParser) {
const { current } = pathParser;
const point = pathParser.getAsCurrentPoint();
return {
current,
point
};
}
pathL(ctx, boundingBox) {
const { pathParser } = this;
const { current, point } = PathElement.pathL(pathParser);
const { x, y } = point;
pathParser.addMarker(point, current);
boundingBox.addPoint(x, y);
if (ctx) {
ctx.lineTo(x, y);
}
}
static pathH(pathParser) {
const { current, command } = pathParser;
const point = new Point((command.relative ? current.x : 0) + command.x, current.y);
pathParser.current = point;
return {
current,
point
};
}
pathH(ctx, boundingBox) {
const { pathParser } = this;
const { current, point } = PathElement.pathH(pathParser);
const { x, y } = point;
pathParser.addMarker(point, current);
boundingBox.addPoint(x, y);
if (ctx) {
ctx.lineTo(x, y);
}
}
static pathV(pathParser) {
const { current, command } = pathParser;
const point = new Point(current.x, (command.relative ? current.y : 0) + command.y);
pathParser.current = point;
return {
current,
point
};
}
pathV(ctx, boundingBox) {
const { pathParser } = this;
const { current, point } = PathElement.pathV(pathParser);
const { x, y } = point;
pathParser.addMarker(point, current);
boundingBox.addPoint(x, y);
if (ctx) {
ctx.lineTo(x, y);
}
}
static pathC(pathParser) {
const { current } = pathParser;
const point = pathParser.getPoint('x1', 'y1');
const controlPoint = pathParser.getAsControlPoint('x2', 'y2');
const currentPoint = pathParser.getAsCurrentPoint();
return {
current,
point,
controlPoint,
currentPoint
};
}
pathC(ctx, boundingBox) {
const { pathParser } = this;
const { current, point, controlPoint, currentPoint } = PathElement.pathC(pathParser);
pathParser.addMarker(currentPoint, controlPoint, point);
boundingBox.addBezierCurve(current.x, current.y, point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
if (ctx) {
ctx.bezierCurveTo(point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
}
}
static pathS(pathParser) {
const { current } = pathParser;
const point = pathParser.getReflectedControlPoint();
const controlPoint = pathParser.getAsControlPoint('x2', 'y2');
const currentPoint = pathParser.getAsCurrentPoint();
return {
current,
point,
controlPoint,
currentPoint
};
}
pathS(ctx, boundingBox) {
const { pathParser } = this;
const { current, point, controlPoint, currentPoint } = PathElement.pathS(pathParser);
pathParser.addMarker(currentPoint, controlPoint, point);
boundingBox.addBezierCurve(current.x, current.y, point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
if (ctx) {
ctx.bezierCurveTo(point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
}
}
static pathQ(pathParser) {
const { current } = pathParser;
const controlPoint = pathParser.getAsControlPoint('x1', 'y1');
const currentPoint = pathParser.getAsCurrentPoint();
return {
current,
controlPoint,
currentPoint
};
}
pathQ(ctx, boundingBox) {
const { pathParser } = this;
const { current, controlPoint, currentPoint } = PathElement.pathQ(pathParser);
pathParser.addMarker(currentPoint, controlPoint, controlPoint);
boundingBox.addQuadraticCurve(current.x, current.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
if (ctx) {
ctx.quadraticCurveTo(controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
}
}
static pathT(pathParser) {
const { current } = pathParser;
const controlPoint = pathParser.getReflectedControlPoint();
pathParser.control = controlPoint;
const currentPoint = pathParser.getAsCurrentPoint();
return {
current,
controlPoint,
currentPoint
};
}
pathT(ctx, boundingBox) {
const { pathParser } = this;
const { current, controlPoint, currentPoint } = PathElement.pathT(pathParser);
pathParser.addMarker(currentPoint, controlPoint, controlPoint);
boundingBox.addQuadraticCurve(current.x, current.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
if (ctx) {
ctx.quadraticCurveTo(controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
}
}
static pathA(pathParser) {
const { current, command } = pathParser;
let { rX, rY, xRot, lArcFlag, sweepFlag } = command;
const xAxisRotation = xRot * (Math.PI / 180.0);
const currentPoint = pathParser.getAsCurrentPoint();
// Conversion from endpoint to center parameterization
// http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
// x1', y1'
const currp = new Point(Math.cos(xAxisRotation) * (current.x - currentPoint.x) / 2.0
+ Math.sin(xAxisRotation) * (current.y - currentPoint.y) / 2.0, -Math.sin(xAxisRotation) * (current.x - currentPoint.x) / 2.0
+ Math.cos(xAxisRotation) * (current.y - currentPoint.y) / 2.0);
// adjust radii
const l = Math.pow(currp.x, 2) / Math.pow(rX, 2)
+ Math.pow(currp.y, 2) / Math.pow(rY, 2);
if (l > 1) {
rX *= Math.sqrt(l);
rY *= Math.sqrt(l);
}
// cx', cy'
let s = (lArcFlag === sweepFlag ? -1 : 1) * Math.sqrt(((Math.pow(rX, 2) * Math.pow(rY, 2))
- (Math.pow(rX, 2) * Math.pow(currp.y, 2))
- (Math.pow(rY, 2) * Math.pow(currp.x, 2))) / (Math.pow(rX, 2) * Math.pow(currp.y, 2)
+ Math.pow(rY, 2) * Math.pow(currp.x, 2)));
if (isNaN(s)) {
s = 0;
}
const cpp = new Point(s * rX * currp.y / rY, s * -rY * currp.x / rX);
// cx, cy
const centp = new Point((current.x + currentPoint.x) / 2.0
+ Math.cos(xAxisRotation) * cpp.x
- Math.sin(xAxisRotation) * cpp.y, (current.y + currentPoint.y) / 2.0
+ Math.sin(xAxisRotation) * cpp.x
+ Math.cos(xAxisRotation) * cpp.y);
// initial angle
const a1 = vectorsAngle([1, 0], [(currp.x - cpp.x) / rX, (currp.y - cpp.y) / rY]); // θ1
// angle delta
const u = [(currp.x - cpp.x) / rX, (currp.y - cpp.y) / rY];
const v = [(-currp.x - cpp.x) / rX, (-currp.y - cpp.y) / rY];
let ad = vectorsAngle(u, v); // Δθ
if (vectorsRatio(u, v) <= -1) {
ad = Math.PI;
}
if (vectorsRatio(u, v) >= 1) {
ad = 0;
}
return {
currentPoint,
rX,
rY,
sweepFlag,
xAxisRotation,
centp,
a1,
ad
};
}
pathA(ctx, boundingBox) {
const { pathParser } = this;
const { currentPoint, rX, rY, sweepFlag, xAxisRotation, centp, a1, ad } = PathElement.pathA(pathParser);
// for markers
const dir = 1 - sweepFlag ? 1.0 : -1.0;
const ah = a1 + dir * (ad / 2.0);
const halfWay = new Point(centp.x + rX * Math.cos(ah), centp.y + rY * Math.sin(ah));
pathParser.addMarkerAngle(halfWay, ah - dir * Math.PI / 2);
pathParser.addMarkerAngle(currentPoint, ah - dir * Math.PI);
boundingBox.addPoint(currentPoint.x, currentPoint.y); // TODO: this is too naive, make it better
if (ctx && !isNaN(a1) && !isNaN(ad)) {
const r = rX > rY ? rX : rY;
const sx = rX > rY ? 1 : rX / rY;
const sy = rX > rY ? rY / rX : 1;
ctx.translate(centp.x, centp.y);
ctx.rotate(xAxisRotation);
ctx.scale(sx, sy);
ctx.arc(0, 0, r, a1, a1 + ad, Boolean(1 - sweepFlag));
ctx.scale(1 / sx, 1 / sy);
ctx.rotate(-xAxisRotation);
ctx.translate(-centp.x, -centp.y);
}
}
static pathZ(pathParser) {
pathParser.current = pathParser.start;
}
pathZ(ctx, boundingBox) {
PathElement.pathZ(this.pathParser);
if (ctx) {
// only close path if it is not a straight line
if (boundingBox.x1 !== boundingBox.x2
&& boundingBox.y1 !== boundingBox.y2) {
ctx.closePath();
}
}
}
}
class GlyphElement extends PathElement {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'glyph';
this.horizAdvX = this.getAttribute('horiz-adv-x').getNumber();
this.unicode = this.getAttribute('unicode').getString();
this.arabicForm = this.getAttribute('arabic-form').getString();
}
}
class TextElement extends RenderedElement {
constructor(document, node, captureTextNodes) {
super(document, node, new.target === TextElement
? true
: captureTextNodes);
this.type = 'text';
this.x = 0;
this.y = 0;
this.measureCache = -1;
}
setContext(ctx, fromMeasure = false) {
super.setContext(ctx, fromMeasure);
const textBaseline = this.getStyle('dominant-baseline').getTextBaseline()
|| this.getStyle('alignment-baseline').getTextBaseline();
if (textBaseline) {
ctx.textBaseline = textBaseline;
}
}
initializeCoordinates() {
this.x = 0;
this.y = 0;
this.leafTexts = [];
this.textChunkStart = 0;
this.minX = Number.POSITIVE_INFINITY;
this.maxX = Number.NEGATIVE_INFINITY;
}
getBoundingBox(ctx) {
if (this.type !== 'text') {
return this.getTElementBoundingBox(ctx);
}
// first, calculate child positions
this.initializeCoordinates();
this.adjustChildCoordinatesRecursive(ctx);
let boundingBox = null;
// then calculate bounding box
this.children.forEach((_, i) => {
const childBoundingBox = this.getChildBoundingBox(ctx, this, this, i);
if (!boundingBox) {
boundingBox = childBoundingBox;
}
else {
boundingBox.addBoundingBox(childBoundingBox);
}
});
return boundingBox;
}
getFontSize() {
const { document, parent } = this;
const inheritFontSize = Font.parse(document.ctx.font).fontSize;
const fontSize = parent.getStyle('font-size').getNumber(inheritFontSize);
return fontSize;
}
getTElementBoundingBox(ctx) {
const fontSize = this.getFontSize();
return new BoundingBox(this.x, this.y - fontSize, this.x + this.measureText(ctx), this.y);
}
getGlyph(font, text, i) {
const char = text[i];
let glyph = null;
if (font.isArabic) {
const len = text.length;
const prevChar = text[i - 1];
const nextChar = text[i + 1];
let arabicForm = 'isolated';
if ((i === 0 || prevChar === ' ') && i < len - 1 && nextChar !== ' ') {
arabicForm = 'terminal';
}
if (i > 0 && prevChar !== ' ' && i < len - 1 && nextChar !== ' ') {
arabicForm = 'medial';
}
if (i > 0 && prevChar !== ' ' && (i === len - 1 || nextChar === ' ')) {
arabicForm = 'initial';
}
if (typeof font.glyphs[char] !== 'undefined') {
// NEED TEST
const maybeGlyph = font.glyphs[char];
glyph = maybeGlyph instanceof GlyphElement
? maybeGlyph
: maybeGlyph[arabicForm];
}
}
else {
glyph = font.glyphs[char];
}
if (!glyph) {
glyph = font.missingGlyph;
}
return glyph;
}
getText() {
return '';
}
getTextFromNode(node) {
const textNode = node || this.node;
const childNodes = Array.from(textNode.parentNode.childNodes);
const index = childNodes.indexOf(textNode);
const lastIndex = childNodes.length - 1;
let text = compressSpaces(
// textNode.value
// || textNode.text
textNode.textContent
|| '');
if (index === 0) {
text = trimLeft(text);
}
if (index === lastIndex) {
text = trimRight(text);
}
return text;
}
renderChildren(ctx) {
if (this.type !== 'text') {
this.renderTElementChildren(ctx);
return;
}
// first, calculate child positions
this.initializeCoordinates();
this.adjustChildCoordinatesRecursive(ctx);
// then render
this.children.forEach((_, i) => {
this.renderChild(ctx, this, this, i);
});
const { mouse } = this.document.screen;
// Do not calc bounding box if mouse is not working.
if (mouse.isWorking()) {
mouse.checkBoundingBox(this, this.getBoundingBox(ctx));
}
}
renderTElementChildren(ctx) {
const { document, parent } = this;
const renderText = this.getText();
const customFont = parent.getStyle('font-family').getDefinition();
if (customFont) {
const { unitsPerEm } = customFont.fontFace;
const ctxFont = Font.parse(document.ctx.font);
const fontSize = parent.getStyle('font-size').getNumber(ctxFont.fontSize);
const fontStyle = parent.getStyle('font-style').getString(ctxFont.fontStyle);
const scale = fontSize / unitsPerEm;
const text = customFont.isRTL
? renderText.split('').reverse().join('')
: renderText;
const dx = toNumbers(parent.getAttribute('dx').getString());
const len = text.length;
for (let i = 0; i < len; i++) {
const glyph = this.getGlyph(customFont, text, i);
ctx.translate(this.x, this.y);
ctx.scale(scale, -scale);
const lw = ctx.lineWidth;
ctx.lineWidth = ctx.lineWidth * unitsPerEm / fontSize;
if (fontStyle === 'italic') {
ctx.transform(1, 0, .4, 1, 0, 0);
}
glyph.render(ctx);
if (fontStyle === 'italic') {
ctx.transform(1, 0, -.4, 1, 0, 0);
}
ctx.lineWidth = lw;
ctx.scale(1 / scale, -1 / scale);
ctx.translate(-this.x, -this.y);
this.x += fontSize * (glyph.horizAdvX || customFont.horizAdvX) / unitsPerEm;
if (typeof dx[i] !== 'undefined' && !isNaN(dx[i])) {
this.x += dx[i];
}
}
return;
}
const { x, y } = this;
// NEED TEST
// if (ctx.paintOrder === 'stroke') {
// if (ctx.strokeStyle) {
// ctx.strokeText(renderText, x, y);
// }
// if (ctx.fillStyle) {
// ctx.fillText(renderText, x, y);
// }
// } else {
if (ctx.fillStyle) {
ctx.fillText(renderText, x, y);
}
if (ctx.strokeStyle) {
ctx.strokeText(renderText, x, y);
}
// }
}
applyAnchoring() {
if (this.textChunkStart >= this.leafTexts.length) {
return;
}
// This is basically the "Apply anchoring" part of https://www.w3.org/TR/SVG2/text.html#TextLayoutAlgorithm.
// The difference is that we apply the anchoring as soon as a chunk is finished. This saves some extra looping.
// Vertical text is not supported.
const firstElement = this.leafTexts[this.textChunkStart];
const textAnchor = firstElement.getStyle('text-anchor').getString('start');
const isRTL = false; // we treat RTL like LTR
let shift = 0;
if (textAnchor === 'start' && !isRTL || textAnchor === 'end' && isRTL) {
shift = firstElement.x - this.minX;
}
else if (textAnchor === 'end' && !isRTL || textAnchor === 'start' && isRTL) {
shift = firstElement.x - this.maxX;
}
else {
shift = firstElement.x - (this.minX + this.maxX) / 2;
}
for (let i = this.textChunkStart; i < this.leafTexts.length; i++) {
this.leafTexts[i].x += shift;
}
// start new chunk
this.minX = Number.POSITIVE_INFINITY;
this.maxX = Number.NEGATIVE_INFINITY;
this.textChunkStart = this.leafTexts.length;
}
adjustChildCoordinatesRecursive(ctx) {
this.children.forEach((_, i) => {
this.adjustChildCoordinatesRecursiveCore(ctx, this, this, i);
});
this.applyAnchoring();
}
adjustChildCoordinatesRecursiveCore(ctx, textParent, parent, i) {
const child = parent.children[i];
if (child.children.length > 0) {
child.children.forEach((_, i) => {
textParent.adjustChildCoordinatesRecursiveCore(ctx, textParent, child, i);
});
}
else {
// only leafs are relevant
this.adjustChildCoordinates(ctx, textParent, parent, i);
}
}
adjustChildCoordinates(ctx, textParent, parent, i) {
const child = parent.children[i];
if (typeof child.measureText !== 'function') {
return child;
}
ctx.save();
child.setContext(ctx, true);
const xAttr = child.getAttribute('x');
const yAttr = child.getAttribute('y');
const dxAttr = child.getAttribute('dx');
const dyAttr = child.getAttribute('dy');
const customFont = child.getStyle('font-family').getDefinition();
const isRTL = Boolean(customFont) && customFont.isRTL;
if (i === 0) {
// First children inherit attributes from parent(s). Positional attributes
// are only inherited from a parent to it's first child.
if (!xAttr.hasValue()) {
xAttr.setValue(child.getInheritedAttribute('x'));
}
if (!yAttr.hasValue()) {
yAttr.setValue(child.getInheritedAttribute('y'));
}
if (!dxAttr.hasValue()) {
dxAttr.setValue(child.getInheritedAttribute('dx'));
}
if (!dyAttr.hasValue()) {
dyAttr.setValue(child.getInheritedAttribute('dy'));
}
}
const width = child.measureText(ctx);
if (isRTL) {
textParent.x -= width;
}
if (xAttr.hasValue()) {
// an "x" attribute marks the start of a new chunk
textParent.applyAnchoring();
child.x = xAttr.getPixels('x');
if (dxAttr.hasValue()) {
child.x += dxAttr.getPixels('x');
}
}
else {
if (dxAttr.hasValue()) {
textParent.x += dxAttr.getPixels('x');
}
child.x = textParent.x;
}
textParent.x = child.x;
if (!isRTL) {
textParent.x += width;
}
if (yAttr.hasValue()) {
child.y = yAttr.getPixels('y');
if (dyAttr.hasValue()) {
child.y += dyAttr.getPixels('y');
}
}
else {
if (dyAttr.hasValue()) {
textParent.y += dyAttr.getPixels('y');
}
child.y = textParent.y;
}
textParent.y = child.y;
// update the current chunk and it's bounds
textParent.leafTexts.push(child);
textParent.minX = Math.min(textParent.minX, child.x, child.x + width);
textParent.maxX = Math.max(textParent.maxX, child.x, child.x + width);
child.clearContext(ctx);
ctx.restore();
return child;
}
getChildBoundingBox(ctx, textParent, parent, i) {
const child = parent.children[i];
// not a text node?
if (typeof child.getBoundingBox !== 'function') {
return null;
}
const boundingBox = child.getBoundingBox(ctx);
if (!boundingBox) {
return null;
}
child.children.forEach((_, i) => {
const childBoundingBox = textParent.getChildBoundingBox(ctx, textParent, child, i);
boundingBox.addBoundingBox(childBoundingBox);
});
return boundingBox;
}
renderChild(ctx, textParent, parent, i) {
const child = parent.children[i];
child.render(ctx);
child.children.forEach((_, i) => {
textParent.renderChild(ctx, textParent, child, i);
});
}
measureText(ctx) {
const { measureCache } = this;
if (~measureCache) {
return measureCache;
}
const renderText = this.getText();
const measure = this.measureTargetText(ctx, renderText);
this.measureCache = measure;
return measure;
}
measureTargetText(ctx, targetText) {
if (!targetText.length) {
return 0;
}
const { parent } = this;
const customFont = parent.getStyle('font-family').getDefinition();
if (customFont) {
const fontSize = this.getFontSize();
const text = customFont.isRTL
? targetText.split('').reverse().join('')
: targetText;
const dx = toNumbers(parent.getAttribute('dx').getString());
const len = text.length;
let measure = 0;
for (let i = 0; i < len; i++) {
const glyph = this.getGlyph(customFont, text, i);
measure += (glyph.horizAdvX || customFont.horizAdvX)
* fontSize
/ customFont.fontFace.unitsPerEm;
if (typeof dx[i] !== 'undefined' && !isNaN(dx[i])) {
measure += dx[i];
}
}
return measure;
}
if (!ctx.measureText) {
return targetText.length * 10;
}
ctx.save();
this.setContext(ctx, true);
const { width: measure } = ctx.measureText(targetText);
this.clearContext(ctx);
ctx.restore();
return measure;
}
/**
* Inherits positional attributes from {@link TextElement} parent(s). Attributes
* are only inherited from a parent to its first child.
* @param name - The attribute name.
* @returns The attribute value or null.
*/
getInheritedAttribute(name) {
// eslint-disable-next-line @typescript-eslint/no-this-alias,consistent-this
let current = this;
while (current instanceof TextElement && current.isFirstChild()) {
const parentAttr = current.parent.getAttribute(name);
if (parentAttr.hasValue(true)) {
return parentAttr.getValue('0');
}
current = current.parent;
}
return null;
}
}
class TSpanElement extends TextElement {
constructor(document, node, captureTextNodes) {
super(document, node, new.target === TSpanElement
? true
: captureTextNodes);
this.type = 'tspan';
// if this node has children, then they own the text
this.text = this.children.length > 0
? ''
: this.getTextFromNode();
}
getText() {
return this.text;
}
}
class TextNode extends TSpanElement {
constructor() {
super(...arguments);
this.type = 'textNode';
}
}
class SVGElement extends RenderedElement {
constructor() {
super(...arguments);
this.type = 'svg';
this.root = false;
}
setContext(ctx) {
const { document } = this;
const { screen, window } = document;
const canvas = ctx.canvas;
screen.setDefaults(ctx);
if (canvas.style
&& typeof ctx.font !== 'undefined'
&& window
&& typeof window.getComputedStyle !== 'undefined') {
ctx.font = window.getComputedStyle(canvas).getPropertyValue('font');
const fontSizeProp = new Property(document, 'fontSize', Font.parse(ctx.font).fontSize);
if (fontSizeProp.hasValue()) {
document.rootEmSize = fontSizeProp.getPixels('y');
document.emSize = document.rootEmSize;
}
}
// create new view port
if (!this.getAttribute('x').hasValue()) {
this.getAttribute('x', true).setValue(0);
}
if (!this.getAttribute('y').hasValue()) {
this.getAttribute('y', true).setValue(0);
}
let { width, height } = screen.viewPort;
if (!this.getStyle('width').hasValue()) {
this.getStyle('width', true).setValue('100%');
}
if (!this.getStyle('height').hasValue()) {
this.getStyle('height', true).setValue('100%');
}
if (!this.getStyle('color').hasValue()) {
this.getStyle('color', true).setValue('black');
}
const refXAttr = this.getAttribute('refX');
const refYAttr = this.getAttribute('refY');
const viewBoxAttr = this.getAttribute('viewBox');
const viewBox = viewBoxAttr.hasValue()
? toNumbers(viewBoxAttr.getString())
: null;
const clip = !this.root
&& this.getStyle('overflow').getValue('hidden') !== 'visible';
let minX = 0;
let minY = 0;
let clipX = 0;
let clipY = 0;
if (viewBox) {
minX = viewBox[0];
minY = viewBox[1];
}
if (!this.root) {
width = this.getStyle('width').getPixels('x');
height = this.getStyle('height').getPixels('y');
if (this.type === 'marker') {
clipX = minX;
clipY = minY;
minX = 0;
minY = 0;
}
}
screen.viewPort.setCurrent(width, height);
// Default value of transform-origin is center only for root SVG elements
// https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/transform-origin
if (this.node // is not temporary SVGElement
&& (!this.parent || this.node.parentNode?.nodeName === 'foreignObject')
&& this.getStyle('transform', false, true).hasValue()
&& !this.getStyle('transform-origin', false, true).hasValue()) {
this.getStyle('transform-origin', true, true).setValue('50% 50%');
}
super.setContext(ctx);
ctx.translate(this.getAttribute('x').getPixels('x'), this.getAttribute('y').getPixels('y'));
if (viewBox) {
width = viewBox[2];
height = viewBox[3];
}
document.setViewBox({
ctx,
aspectRatio: this.getAttribute('preserveAspectRatio').getString(),
width: screen.viewPort.width,
desiredWidth: width,
height: screen.viewPort.height,
desiredHeight: height,
minX,
minY,
refX: refXAttr.getValue(),
refY: refYAttr.getValue(),
clip,
clipX,
clipY
});
if (viewBox) {
screen.viewPort.removeCurrent();
screen.viewPort.setCurrent(width, height);
}
}
clearContext(ctx) {
super.clearContext(ctx);
this.document.screen.viewPort.removeCurrent();
}
/**
* Resize SVG to fit in given size.
* @param width
* @param height
* @param preserveAspectRatio
*/
resize(width, height = width, preserveAspectRatio = false) {
const widthAttr = this.getAttribute('width', true);
const heightAttr = this.getAttribute('height', true);
const viewBoxAttr = this.getAttribute('viewBox');
const styleAttr = this.getAttribute('style');
const originWidth = widthAttr.getNumber(0);
const originHeight = heightAttr.getNumber(0);
if (preserveAspectRatio) {
if (typeof preserveAspectRatio === 'string') {
this.getAttribute('preserveAspectRatio', true).setValue(preserveAspectRatio);
}
else {
const preserveAspectRatioAttr = this.getAttribute('preserveAspectRatio');
if (preserveAspectRatioAttr.hasValue()) {
preserveAspectRatioAttr.setValue(preserveAspectRatioAttr.getString().replace(/^\s*(\S.*\S)\s*$/, '$1'));
}
}
}
widthAttr.setValue(width);
heightAttr.setValue(height);
if (!viewBoxAttr.hasValue()) {
viewBoxAttr.setValue(`0 0 ${originWidth || width} ${originHeight || height}`);
}
if (styleAttr.hasValue()) {
const widthStyle = this.getStyle('width');
const heightStyle = this.getStyle('height');
if (widthStyle.hasValue()) {
widthStyle.setValue(`${width}px`);
}
if (heightStyle.hasValue()) {
heightStyle.setValue(`${height}px`);
}
}
}
}
class RectElement extends PathElement {
constructor() {
super(...arguments);
this.type = 'rect';
}
path(ctx) {
const x = this.getAttribute('x').getPixels('x');
const y = this.getAttribute('y').getPixels('y');
const width = this.getStyle('width', false, true).getPixels('x');
const height = this.getStyle('height', false, true).getPixels('y');
const rxAttr = this.getAttribute('rx');
const ryAttr = this.getAttribute('ry');
let rx = rxAttr.getPixels('x');
let ry = ryAttr.getPixels('y');
if (rxAttr.hasValue() && !ryAttr.hasValue()) {
ry = rx;
}
if (ryAttr.hasValue() && !rxAttr.hasValue()) {
rx = ry;
}
rx = Math.min(rx, width / 2.0);
ry = Math.min(ry, height / 2.0);
if (ctx) {
const KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
ctx.beginPath(); // always start the path so we don't fill prior paths
if (height > 0 && width > 0) {
ctx.moveTo(x + rx, y);
ctx.lineTo(x + width - rx, y);
ctx.bezierCurveTo(x + width - rx + (KAPPA * rx), y, x + width, y + ry - (KAPPA * ry), x + width, y + ry);
ctx.lineTo(x + width, y + height - ry);
ctx.bezierCurveTo(x + width, y + height - ry + (KAPPA * ry), x + width - rx + (KAPPA * rx), y + height, x + width - rx, y + height);
ctx.lineTo(x + rx, y + height);
ctx.bezierCurveTo(x + rx - (KAPPA * rx), y + height, x, y + height - ry + (KAPPA * ry), x, y + height - ry);
ctx.lineTo(x, y + ry);
ctx.bezierCurveTo(x, y + ry - (KAPPA * ry), x + rx - (KAPPA * rx), y, x + rx, y);
ctx.closePath();
}
}
return new BoundingBox(x, y, x + width, y + height);
}
getMarkers() {
return null;
}
}
class CircleElement extends PathElement {
constructor() {
super(...arguments);
this.type = 'circle';
}
path(ctx) {
const cx = this.getAttribute('cx').getPixels('x');
const cy = this.getAttribute('cy').getPixels('y');
const r = this.getAttribute('r').getPixels();
if (ctx && r > 0) {
ctx.beginPath();
ctx.arc(cx, cy, r, 0, Math.PI * 2, false);
ctx.closePath();
}
return new BoundingBox(cx - r, cy - r, cx + r, cy + r);
}
getMarkers() {
return null;
}
}
class EllipseElement extends PathElement {
constructor() {
super(...arguments);
this.type = 'ellipse';
}
path(ctx) {
const KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
const rx = this.getAttribute('rx').getPixels('x');
const ry = this.getAttribute('ry').getPixels('y');
const cx = this.getAttribute('cx').getPixels('x');
const cy = this.getAttribute('cy').getPixels('y');
if (ctx && rx > 0 && ry > 0) {
ctx.beginPath();
ctx.moveTo(cx + rx, cy);
ctx.bezierCurveTo(cx + rx, cy + (KAPPA * ry), cx + (KAPPA * rx), cy + ry, cx, cy + ry);
ctx.bezierCurveTo(cx - (KAPPA * rx), cy + ry, cx - rx, cy + (KAPPA * ry), cx - rx, cy);
ctx.bezierCurveTo(cx - rx, cy - (KAPPA * ry), cx - (KAPPA * rx), cy - ry, cx, cy - ry);
ctx.bezierCurveTo(cx + (KAPPA * rx), cy - ry, cx + rx, cy - (KAPPA * ry), cx + rx, cy);
ctx.closePath();
}
return new BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
}
getMarkers() {
return null;
}
}
class LineElement extends PathElement {
constructor() {
super(...arguments);
this.type = 'line';
}
getPoints() {
return [
new Point(this.getAttribute('x1').getPixels('x'), this.getAttribute('y1').getPixels('y')),
new Point(this.getAttribute('x2').getPixels('x'), this.getAttribute('y2').getPixels('y'))
];
}
path(ctx) {
const [{ x: x0, y: y0 }, { x: x1, y: y1 }] = this.getPoints();
if (ctx) {
ctx.beginPath();
ctx.moveTo(x0, y0);
ctx.lineTo(x1, y1);
}
return new BoundingBox(x0, y0, x1, y1);
}
getMarkers() {
const [p0, p1] = this.getPoints();
const a = p0.angleTo(p1);
return [
[p0, a],
[p1, a]
];
}
}
class PolylineElement extends PathElement {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'polyline';
this.points = [];
this.points = Point.parsePath(this.getAttribute('points').getString());
}
path(ctx) {
const { points } = this;
const [{ x: x0, y: y0 }] = points;
const boundingBox = new BoundingBox(x0, y0);
if (ctx) {
ctx.beginPath();
ctx.moveTo(x0, y0);
}
points.forEach(({ x, y }) => {
boundingBox.addPoint(x, y);
if (ctx) {
ctx.lineTo(x, y);
}
});
return boundingBox;
}
getMarkers() {
const { points } = this;
const lastIndex = points.length - 1;
const markers = [];
points.forEach((point, i) => {
if (i === lastIndex) {
return;
}
markers.push([
point,
point.angleTo(points[i + 1])
]);
});
if (markers.length > 0) {
markers.push([
points[points.length - 1],
markers[markers.length - 1][1]
]);
}
return markers;
}
}
class PolygonElement extends PolylineElement {
constructor() {
super(...arguments);
this.type = 'polygon';
}
path(ctx) {
const boundingBox = super.path(ctx);
const [{ x, y }] = this.points;
if (ctx) {
ctx.lineTo(x, y);
ctx.closePath();
}
return boundingBox;
}
}
class PatternElement extends Element {
constructor() {
super(...arguments);
this.type = 'pattern';
}
createPattern(ctx, _, parentOpacityProp) {
const width = this.getStyle('width').getPixels('x', true);
const height = this.getStyle('height').getPixels('y', true);
// render me using a temporary svg element
const patternSvg = new SVGElement(this.document, null);
patternSvg.attributes.viewBox = new Property(this.document, 'viewBox', this.getAttribute('viewBox').getValue());
patternSvg.attributes.width = new Property(this.document, 'width', `${width}px`);
patternSvg.attributes.height = new Property(this.document, 'height', `${height}px`);
patternSvg.attributes.transform = new Property(this.document, 'transform', this.getAttribute('patternTransform').getValue());
patternSvg.children = this.children;
const patternCanvas = this.document.createCanvas(width, height);
const patternCtx = patternCanvas.getContext('2d');
const xAttr = this.getAttribute('x');
const yAttr = this.getAttribute('y');
if (xAttr.hasValue() && yAttr.hasValue()) {
patternCtx.translate(xAttr.getPixels('x', true), yAttr.getPixels('y', true));
}
if (parentOpacityProp.hasValue()) {
this.styles['fill-opacity'] = parentOpacityProp;
}
else {
Reflect.deleteProperty(this.styles, 'fill-opacity');
}
// render 3x3 grid so when we transform there's no white space on edges
for (let x = -1; x <= 1; x++) {
for (let y = -1; y <= 1; y++) {
patternCtx.save();
patternSvg.attributes.x = new Property(this.document, 'x', x * patternCanvas.width);
patternSvg.attributes.y = new Property(this.document, 'y', y * patternCanvas.height);
patternSvg.render(patternCtx);
patternCtx.restore();
}
}
const pattern = ctx.createPattern(patternCanvas, 'repeat');
return pattern;
}
}
class MarkerElement extends Element {
constructor() {
super(...arguments);
this.type = 'marker';
}
render(ctx, point, angle) {
if (!point) {
return;
}
const { x, y } = point;
const orient = this.getAttribute('orient').getString('auto');
const markerUnits = this.getAttribute('markerUnits').getString('strokeWidth');
ctx.translate(x, y);
if (orient === 'auto') {
ctx.rotate(angle);
}
if (markerUnits === 'strokeWidth') {
ctx.scale(ctx.lineWidth, ctx.lineWidth);
}
ctx.save();
// render me using a temporary svg element
const markerSvg = new SVGElement(this.document, null);
markerSvg.type = this.type;
markerSvg.attributes.viewBox = new Property(this.document, 'viewBox', this.getAttribute('viewBox').getValue());
markerSvg.attributes.refX = new Property(this.document, 'refX', this.getAttribute('refX').getValue());
markerSvg.attributes.refY = new Property(this.document, 'refY', this.getAttribute('refY').getValue());
markerSvg.attributes.width = new Property(this.document, 'width', this.getAttribute('markerWidth').getValue());
markerSvg.attributes.height = new Property(this.document, 'height', this.getAttribute('markerHeight').getValue());
markerSvg.attributes.overflow = new Property(this.document, 'overflow', this.getAttribute('overflow').getValue());
markerSvg.attributes.fill = new Property(this.document, 'fill', this.getAttribute('fill').getColor('black'));
markerSvg.attributes.stroke = new Property(this.document, 'stroke', this.getAttribute('stroke').getValue('none'));
markerSvg.children = this.children;
markerSvg.render(ctx);
ctx.restore();
if (markerUnits === 'strokeWidth') {
ctx.scale(1 / ctx.lineWidth, 1 / ctx.lineWidth);
}
if (orient === 'auto') {
ctx.rotate(-angle);
}
ctx.translate(-x, -y);
}
}
class DefsElement extends Element {
constructor() {
super(...arguments);
this.type = 'defs';
}
render() {
// NOOP
}
}
class GElement extends RenderedElement {
constructor() {
super(...arguments);
this.type = 'g';
}
getBoundingBox(ctx) {
const boundingBox = new BoundingBox();
this.children.forEach((child) => {
boundingBox.addBoundingBox(child.getBoundingBox(ctx));
});
return boundingBox;
}
}
class GradientElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.attributesToInherit = [
'gradientUnits'
];
this.stops = [];
const { stops, children } = this;
children.forEach((child) => {
if (child.type === 'stop') {
stops.push(child);
}
});
}
getGradientUnits() {
return this.getAttribute('gradientUnits').getString('objectBoundingBox');
}
createGradient(ctx, element, parentOpacityProp) {
// eslint-disable-next-line @typescript-eslint/no-this-alias, consistent-this
let stopsContainer = this;
if (this.getHrefAttribute().hasValue()) {
stopsContainer = this.getHrefAttribute().getDefinition();
this.inheritStopContainer(stopsContainer);
}
const { stops } = stopsContainer;
const gradient = this.getGradient(ctx, element);
if (!gradient) {
return this.addParentOpacity(parentOpacityProp, stops[stops.length - 1].color);
}
stops.forEach((stop) => {
gradient.addColorStop(stop.offset, this.addParentOpacity(parentOpacityProp, stop.color));
});
if (this.getAttribute('gradientTransform').hasValue()) {
// render as transformed pattern on temporary canvas
const { document } = this;
const { MAX_VIRTUAL_PIXELS, viewPort } = document.screen;
const [rootView] = viewPort.viewPorts;
const rect = new RectElement(document, null);
rect.attributes.x = new Property(document, 'x', -MAX_VIRTUAL_PIXELS / 3.0);
rect.attributes.y = new Property(document, 'y', -MAX_VIRTUAL_PIXELS / 3.0);
rect.attributes.width = new Property(document, 'width', MAX_VIRTUAL_PIXELS);
rect.attributes.height = new Property(document, 'height', MAX_VIRTUAL_PIXELS);
const group = new GElement(document, null);
group.attributes.transform = new Property(document, 'transform', this.getAttribute('gradientTransform').getValue());
group.children = [rect];
const patternSvg = new SVGElement(document, null);
patternSvg.attributes.x = new Property(document, 'x', 0);
patternSvg.attributes.y = new Property(document, 'y', 0);
patternSvg.attributes.width = new Property(document, 'width', rootView.width);
patternSvg.attributes.height = new Property(document, 'height', rootView.height);
patternSvg.children = [group];
const patternCanvas = document.createCanvas(rootView.width, rootView.height);
const patternCtx = patternCanvas.getContext('2d');
patternCtx.fillStyle = gradient;
patternSvg.render(patternCtx);
return patternCtx.createPattern(patternCanvas, 'no-repeat');
}
return gradient;
}
inheritStopContainer(stopsContainer) {
this.attributesToInherit.forEach((attributeToInherit) => {
if (!this.getAttribute(attributeToInherit).hasValue()
&& stopsContainer.getAttribute(attributeToInherit).hasValue()) {
this.getAttribute(attributeToInherit, true)
.setValue(stopsContainer.getAttribute(attributeToInherit).getValue());
}
});
}
addParentOpacity(parentOpacityProp, color) {
if (parentOpacityProp.hasValue()) {
const colorProp = new Property(this.document, 'color', color);
return colorProp.addOpacity(parentOpacityProp).getColor();
}
return color;
}
}
class LinearGradientElement extends GradientElement {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'linearGradient';
this.attributesToInherit.push('x1', 'y1', 'x2', 'y2');
}
getGradient(ctx, element) {
const isBoundingBoxUnits = this.getGradientUnits() === 'objectBoundingBox';
const boundingBox = isBoundingBoxUnits
? element.getBoundingBox(ctx)
: null;
if (isBoundingBoxUnits && !boundingBox) {
return null;
}
if (!this.getAttribute('x1').hasValue()
&& !this.getAttribute('y1').hasValue()
&& !this.getAttribute('x2').hasValue()
&& !this.getAttribute('y2').hasValue()) {
this.getAttribute('x1', true).setValue(0);
this.getAttribute('y1', true).setValue(0);
this.getAttribute('x2', true).setValue(1);
this.getAttribute('y2', true).setValue(0);
}
const x1 = isBoundingBoxUnits
? boundingBox.x + boundingBox.width * this.getAttribute('x1').getNumber()
: this.getAttribute('x1').getPixels('x');
const y1 = isBoundingBoxUnits
? boundingBox.y + boundingBox.height * this.getAttribute('y1').getNumber()
: this.getAttribute('y1').getPixels('y');
const x2 = isBoundingBoxUnits
? boundingBox.x + boundingBox.width * this.getAttribute('x2').getNumber()
: this.getAttribute('x2').getPixels('x');
const y2 = isBoundingBoxUnits
? boundingBox.y + boundingBox.height * this.getAttribute('y2').getNumber()
: this.getAttribute('y2').getPixels('y');
if (x1 === x2 && y1 === y2) {
return null;
}
return ctx.createLinearGradient(x1, y1, x2, y2);
}
}
class RadialGradientElement extends GradientElement {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'radialGradient';
this.attributesToInherit.push('cx', 'cy', 'r', 'fx', 'fy', 'fr');
}
getGradient(ctx, element) {
const isBoundingBoxUnits = this.getGradientUnits() === 'objectBoundingBox';
const boundingBox = element.getBoundingBox(ctx);
if (isBoundingBoxUnits && !boundingBox) {
return null;
}
if (!this.getAttribute('cx').hasValue()) {
this.getAttribute('cx', true).setValue('50%');
}
if (!this.getAttribute('cy').hasValue()) {
this.getAttribute('cy', true).setValue('50%');
}
if (!this.getAttribute('r').hasValue()) {
this.getAttribute('r', true).setValue('50%');
}
const cx = isBoundingBoxUnits
? boundingBox.x + boundingBox.width * this.getAttribute('cx').getNumber()
: this.getAttribute('cx').getPixels('x');
const cy = isBoundingBoxUnits
? boundingBox.y + boundingBox.height * this.getAttribute('cy').getNumber()
: this.getAttribute('cy').getPixels('y');
let fx = cx;
let fy = cy;
if (this.getAttribute('fx').hasValue()) {
fx = isBoundingBoxUnits
? boundingBox.x + boundingBox.width * this.getAttribute('fx').getNumber()
: this.getAttribute('fx').getPixels('x');
}
if (this.getAttribute('fy').hasValue()) {
fy = isBoundingBoxUnits
? boundingBox.y + boundingBox.height * this.getAttribute('fy').getNumber()
: this.getAttribute('fy').getPixels('y');
}
const r = isBoundingBoxUnits
? (boundingBox.width + boundingBox.height) / 2.0 * this.getAttribute('r').getNumber()
: this.getAttribute('r').getPixels();
const fr = this.getAttribute('fr').getPixels();
return ctx.createRadialGradient(fx, fy, fr, cx, cy, r);
}
}
class StopElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'stop';
const offset = Math.max(0, Math.min(1, this.getAttribute('offset').getNumber()));
const stopOpacity = this.getStyle('stop-opacity');
let stopColor = this.getStyle('stop-color', true);
if (stopColor.getString() === '') {
stopColor.setValue('#000');
}
if (stopOpacity.hasValue()) {
stopColor = stopColor.addOpacity(stopOpacity);
}
this.offset = offset;
this.color = stopColor.getColor();
}
}
class AnimateElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'animate';
this.duration = 0;
this.initialValue = null;
this.initialUnits = '';
this.removed = false;
this.frozen = false;
document.screen.animations.push(this);
this.begin = this.getAttribute('begin').getMilliseconds();
this.maxDuration = this.begin + this.getAttribute('dur').getMilliseconds();
this.from = this.getAttribute('from');
this.to = this.getAttribute('to');
this.values = new Property(document, 'values', null);
const valuesAttr = this.getAttribute('values');
if (valuesAttr.hasValue()) {
this.values.setValue(valuesAttr.getString().split(';'));
}
}
getProperty() {
const attributeType = this.getAttribute('attributeType').getString();
const attributeName = this.getAttribute('attributeName').getString();
if (attributeType === 'CSS') {
return this.parent.getStyle(attributeName, true);
}
return this.parent.getAttribute(attributeName, true);
}
calcValue() {
const { initialUnits } = this;
const { progress, from, to } = this.getProgress();
// tween value linearly
let newValue = from.getNumber() + (to.getNumber() - from.getNumber()) * progress;
if (initialUnits === '%') {
newValue *= 100.0; // numValue() returns 0-1 whereas properties are 0-100
}
return `${newValue}${initialUnits}`;
}
update(delta) {
const { parent } = this;
const prop = this.getProperty();
// set initial value
if (!this.initialValue) {
this.initialValue = prop.getString();
this.initialUnits = prop.getUnits();
}
// if we're past the end time
if (this.duration > this.maxDuration) {
const fill = this.getAttribute('fill').getString('remove');
// loop for indefinitely repeating animations
if (this.getAttribute('repeatCount').getString() === 'indefinite'
|| this.getAttribute('repeatDur').getString() === 'indefinite') {
this.duration = 0;
}
else if (fill === 'freeze' && !this.frozen) {
this.frozen = true;
parent.animationFrozen = true;
parent.animationFrozenValue = prop.getString();
}
else if (fill === 'remove' && !this.removed) {
this.removed = true;
prop.setValue(parent.animationFrozen
? parent.animationFrozenValue
: this.initialValue);
return true;
}
return false;
}
this.duration += delta;
// if we're past the begin time
let updated = false;
if (this.begin < this.duration) {
let newValue = this.calcValue(); // tween
const typeAttr = this.getAttribute('type');
if (typeAttr.hasValue()) {
// for transform, etc.
const type = typeAttr.getString();
newValue = `${type}(${newValue})`;
}
prop.setValue(newValue);
updated = true;
}
return updated;
}
getProgress() {
const { document, values } = this;
const result = {
progress: (this.duration - this.begin) / (this.maxDuration - this.begin)
};
if (values.hasValue()) {
const p = result.progress * (values.getValue().length - 1);
const lb = Math.floor(p);
const ub = Math.ceil(p);
result.from = new Property(document, 'from', parseFloat(values.getValue()[lb]));
result.to = new Property(document, 'to', parseFloat(values.getValue()[ub]));
result.progress = (p - lb) / (ub - lb);
}
else {
result.from = this.from;
result.to = this.to;
}
return result;
}
}
class AnimateColorElement extends AnimateElement {
constructor() {
super(...arguments);
this.type = 'animateColor';
}
calcValue() {
const { progress, from, to } = this.getProgress();
const colorFrom = new RGBColor(from.getColor());
const colorTo = new RGBColor(to.getColor());
if (colorFrom.ok && colorTo.ok) {
// tween color linearly
const r = colorFrom.r + (colorTo.r - colorFrom.r) * progress;
const g = colorFrom.g + (colorTo.g - colorFrom.g) * progress;
const b = colorFrom.b + (colorTo.b - colorFrom.b) * progress;
// ? alpha
return `rgb(${Math.floor(r)}, ${Math.floor(g)}, ${Math.floor(b)})`;
}
return this.getAttribute('from').getColor();
}
}
class AnimateTransformElement extends AnimateElement {
constructor() {
super(...arguments);
this.type = 'animateTransform';
}
calcValue() {
const { progress, from, to } = this.getProgress();
// tween value linearly
const transformFrom = toNumbers(from.getString());
const transformTo = toNumbers(to.getString());
const newValue = transformFrom.map((from, i) => {
const to = transformTo[i];
return from + (to - from) * progress;
}).join(' ');
return newValue;
}
}
class FontElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'font';
this.glyphs = {};
this.horizAdvX = this.getAttribute('horiz-adv-x').getNumber();
const { definitions } = document;
const { children } = this;
for (const child of children) {
switch (child.type) {
case 'font-face': {
this.fontFace = child;
const fontFamilyStyle = child.getStyle('font-family');
if (fontFamilyStyle.hasValue()) {
definitions[fontFamilyStyle.getString()] = this;
}
break;
}
case 'missing-glyph':
this.missingGlyph = child;
break;
case 'glyph': {
const glyph = child;
if (glyph.arabicForm) {
this.isRTL = true;
this.isArabic = true;
if (typeof this.glyphs[glyph.unicode] === 'undefined') {
this.glyphs[glyph.unicode] = {};
}
this.glyphs[glyph.unicode][glyph.arabicForm] = glyph;
}
else {
this.glyphs[glyph.unicode] = glyph;
}
break;
}
}
}
}
render() {
// NO RENDER
}
}
class FontFaceElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'font-face';
this.ascent = this.getAttribute('ascent').getNumber();
this.descent = this.getAttribute('descent').getNumber();
this.unitsPerEm = this.getAttribute('units-per-em').getNumber();
}
}
class MissingGlyphElement extends PathElement {
constructor() {
super(...arguments);
this.type = 'missing-glyph';
this.horizAdvX = 0;
}
}
class TRefElement extends TextElement {
constructor() {
super(...arguments);
this.type = 'tref';
}
getText() {
const element = this.getHrefAttribute().getDefinition();
if (element) {
const firstChild = element.children[0];
if (firstChild) {
return firstChild.getText();
}
}
return '';
}
}
class AElement extends TextElement {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'a';
const { childNodes } = node;
const firstChild = childNodes[0];
const hasText = childNodes.length > 0
&& Array.from(childNodes).every(node => node.nodeType === 3);
this.hasText = hasText;
this.text = hasText
? this.getTextFromNode(firstChild)
: '';
}
getText() {
return this.text;
}
renderChildren(ctx) {
if (this.hasText) {
// render as text element
super.renderChildren(ctx);
const { document, x, y } = this;
const { mouse } = document.screen;
const fontSize = new Property(document, 'fontSize', Font.parse(document.ctx.font).fontSize);
// Do not calc bounding box if mouse is not working.
if (mouse.isWorking()) {
mouse.checkBoundingBox(this, new BoundingBox(x, y - fontSize.getPixels('y'), x + this.measureText(ctx), y));
}
}
else if (this.children.length > 0) {
// render as temporary group
const g = new GElement(this.document, null);
g.children = this.children;
g.parent = this;
g.render(ctx);
}
}
onClick() {
const { window } = this.document;
if (window) {
window.open(this.getHrefAttribute().getString());
}
}
onMouseMove() {
const ctx = this.document.ctx;
ctx.canvas.style.cursor = 'pointer';
}
}
class TextPathElement extends TextElement {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'textPath';
this.textWidth = 0;
this.textHeight = 0;
this.pathLength = -1;
this.glyphInfo = null;
this.letterSpacingCache = [];
this.measuresCache = new Map([['', 0]]);
const pathElement = this.getHrefAttribute().getDefinition();
this.text = this.getTextFromNode();
this.dataArray = this.parsePathData(pathElement);
}
getText() {
return this.text;
}
path(ctx) {
const { dataArray } = this;
if (ctx) {
ctx.beginPath();
}
dataArray.forEach(({ type, points }) => {
switch (type) {
case PathParser.LINE_TO:
if (ctx) {
ctx.lineTo(points[0], points[1]);
}
break;
case PathParser.MOVE_TO:
if (ctx) {
ctx.moveTo(points[0], points[1]);
}
break;
case PathParser.CURVE_TO:
if (ctx) {
ctx.bezierCurveTo(points[0], points[1], points[2], points[3], points[4], points[5]);
}
break;
case PathParser.QUAD_TO:
if (ctx) {
ctx.quadraticCurveTo(points[0], points[1], points[2], points[3]);
}
break;
case PathParser.ARC: {
const [cx, cy, rx, ry, theta, dTheta, psi, fs] = points;
const r = rx > ry ? rx : ry;
const scaleX = rx > ry ? 1 : rx / ry;
const scaleY = rx > ry ? ry / rx : 1;
if (ctx) {
ctx.translate(cx, cy);
ctx.rotate(psi);
ctx.scale(scaleX, scaleY);
ctx.arc(0, 0, r, theta, theta + dTheta, Boolean(1 - fs));
ctx.scale(1 / scaleX, 1 / scaleY);
ctx.rotate(-psi);
ctx.translate(-cx, -cy);
}
break;
}
case PathParser.CLOSE_PATH:
if (ctx) {
ctx.closePath();
}
break;
}
});
}
renderChildren(ctx) {
this.setTextData(ctx);
ctx.save();
const textDecoration = this.parent.getStyle('text-decoration').getString();
const fontSize = this.getFontSize();
const { glyphInfo } = this;
const fill = ctx.fillStyle;
if (textDecoration === 'underline') {
ctx.beginPath();
}
glyphInfo.forEach((glyph, i) => {
const { p0, p1, rotation, text: partialText } = glyph;
ctx.save();
ctx.translate(p0.x, p0.y);
ctx.rotate(rotation);
if (ctx.fillStyle) {
ctx.fillText(partialText, 0, 0);
}
if (ctx.strokeStyle) {
ctx.strokeText(partialText, 0, 0);
}
ctx.restore();
if (textDecoration === 'underline') {
if (i === 0) {
ctx.moveTo(p0.x, p0.y + fontSize / 8);
}
ctx.lineTo(p1.x, p1.y + fontSize / 5);
}
// // To assist with debugging visually, uncomment following
//
// ctx.beginPath();
// if (i % 2)
// ctx.strokeStyle = 'red';
// else
// ctx.strokeStyle = 'green';
// ctx.moveTo(p0.x, p0.y);
// ctx.lineTo(p1.x, p1.y);
// ctx.stroke();
// ctx.closePath();
});
if (textDecoration === 'underline') {
ctx.lineWidth = fontSize / 20;
ctx.strokeStyle = fill;
ctx.stroke();
ctx.closePath();
}
ctx.restore();
}
getLetterSpacingAt(idx = 0) {
return this.letterSpacingCache[idx] || 0;
}
findSegmentToFitChar(ctx, anchor, textFullWidth, fullPathWidth, spacesNumber, inputOffset, dy, c, charI) {
let offset = inputOffset;
let glyphWidth = this.measureText(ctx, c);
if (c === ' '
&& anchor === 'justify'
&& textFullWidth < fullPathWidth) {
glyphWidth += (fullPathWidth - textFullWidth) / spacesNumber;
}
if (charI > -1) {
offset += this.getLetterSpacingAt(charI);
}
const splineStep = this.textHeight / 20;
const p0 = this.getEquidistantPointOnPath(offset, splineStep, 0);
const p1 = this.getEquidistantPointOnPath(offset + glyphWidth, splineStep, 0);
const segment = {
p0,
p1
};
const rotation = p0 && p1
? Math.atan2(p1.y - p0.y, p1.x - p0.x)
: 0;
if (dy) {
const dyX = Math.cos(Math.PI / 2 + rotation) * dy;
const dyY = Math.cos(-rotation) * dy;
segment.p0 = {
...p0,
x: p0.x + dyX,
y: p0.y + dyY
};
segment.p1 = {
...p1,
x: p1.x + dyX,
y: p1.y + dyY
};
}
offset += glyphWidth;
return {
offset,
segment,
rotation
};
}
measureText(ctx, text) {
const { measuresCache } = this;
const targetText = text || this.getText();
if (measuresCache.has(targetText)) {
return measuresCache.get(targetText);
}
const measure = this.measureTargetText(ctx, targetText);
measuresCache.set(targetText, measure);
return measure;
}
// This method supposes what all custom fonts already loaded.
// If some font will be loaded after this method call, <textPath> will not be rendered correctly.
// You need to call this method manually to update glyphs cache.
setTextData(ctx) {
if (this.glyphInfo) {
return;
}
const renderText = this.getText();
const chars = renderText.split('');
const spacesNumber = renderText.split(' ').length - 1;
const dx = this.parent.getAttribute('dx').split().map(_ => _.getPixels('x'));
const dy = this.parent.getAttribute('dy').getPixels('y');
const anchor = this.parent.getStyle('text-anchor').getString('start');
const thisSpacing = this.getStyle('letter-spacing');
const parentSpacing = this.parent.getStyle('letter-spacing');
let letterSpacing = 0;
if (!thisSpacing.hasValue()
|| thisSpacing.getValue() === 'inherit') {
letterSpacing = parentSpacing.getPixels();
}
else if (thisSpacing.hasValue()) {
if (thisSpacing.getValue() !== 'initial'
&& thisSpacing.getValue() !== 'unset') {
letterSpacing = thisSpacing.getPixels();
}
}
// fill letter-spacing cache
const letterSpacingCache = [];
const textLen = renderText.length;
this.letterSpacingCache = letterSpacingCache;
for (let i = 0; i < textLen; i++) {
letterSpacingCache.push(typeof dx[i] !== 'undefined'
? dx[i]
: letterSpacing);
}
const dxSum = letterSpacingCache.reduce((acc, cur, i) => (i === 0
? 0
: acc + cur || 0), 0);
const textWidth = this.measureText(ctx);
const textFullWidth = Math.max(textWidth + dxSum, 0);
this.textWidth = textWidth;
this.textHeight = this.getFontSize();
this.glyphInfo = [];
const fullPathWidth = this.getPathLength();
const startOffset = this.getStyle('startOffset').getNumber(0) * fullPathWidth;
let offset = 0;
if (anchor === 'middle'
|| anchor === 'center') {
offset = -textFullWidth / 2;
}
if (anchor === 'end'
|| anchor === 'right') {
offset = -textFullWidth;
}
offset += startOffset;
chars.forEach((char, i) => {
// Find such segment what distance between p0 and p1 is approx. width of glyph
const { offset: nextOffset, segment, rotation } = this.findSegmentToFitChar(ctx, anchor, textFullWidth, fullPathWidth, spacesNumber, offset, dy, char, i);
offset = nextOffset;
if (!segment.p0 || !segment.p1) {
return;
}
// const width = this.getLineLength(
// segment.p0.x,
// segment.p0.y,
// segment.p1.x,
// segment.p1.y
// );
// Note: Since glyphs are rendered one at a time, any kerning pair data built into the font will not be used.
// Can foresee having a rough pair table built in that the developer can override as needed.
// Or use "dx" attribute of the <text> node as a naive replacement
// const kern = 0;
// placeholder for future implementation
// const midpoint = this.getPointOnLine(
// kern + width / 2.0,
// segment.p0.x, segment.p0.y, segment.p1.x, segment.p1.y
// );
this.glyphInfo.push({
// transposeX: midpoint.x,
// transposeY: midpoint.y,
text: chars[i],
p0: segment.p0,
p1: segment.p1,
rotation
});
});
}
parsePathData(path) {
this.pathLength = -1; // reset path length
if (!path) {
return [];
}
const pathCommands = [];
const { pathParser } = path;
pathParser.reset();
// convert l, H, h, V, and v to L
while (!pathParser.isEnd()) {
const { current } = pathParser;
const startX = current ? current.x : 0;
const startY = current ? current.y : 0;
const command = pathParser.next();
let nextCommandType = command.type;
let points = [];
switch (command.type) {
case PathParser.MOVE_TO:
this.pathM(pathParser, points);
break;
case PathParser.LINE_TO:
nextCommandType = this.pathL(pathParser, points);
break;
case PathParser.HORIZ_LINE_TO:
nextCommandType = this.pathH(pathParser, points);
break;
case PathParser.VERT_LINE_TO:
nextCommandType = this.pathV(pathParser, points);
break;
case PathParser.CURVE_TO:
this.pathC(pathParser, points);
break;
case PathParser.SMOOTH_CURVE_TO:
nextCommandType = this.pathS(pathParser, points);
break;
case PathParser.QUAD_TO:
this.pathQ(pathParser, points);
break;
case PathParser.SMOOTH_QUAD_TO:
nextCommandType = this.pathT(pathParser, points);
break;
case PathParser.ARC:
points = this.pathA(pathParser);
break;
case PathParser.CLOSE_PATH:
PathElement.pathZ(pathParser);
break;
}
if (command.type !== PathParser.CLOSE_PATH) {
pathCommands.push({
type: nextCommandType,
points,
start: {
x: startX,
y: startY
},
pathLength: this.calcLength(startX, startY, nextCommandType, points)
});
}
else {
pathCommands.push({
type: PathParser.CLOSE_PATH,
points: [],
pathLength: 0
});
}
}
return pathCommands;
}
pathM(pathParser, points) {
const { x, y } = PathElement.pathM(pathParser).point;
points.push(x, y);
}
pathL(pathParser, points) {
const { x, y } = PathElement.pathL(pathParser).point;
points.push(x, y);
return PathParser.LINE_TO;
}
pathH(pathParser, points) {
const { x, y } = PathElement.pathH(pathParser).point;
points.push(x, y);
return PathParser.LINE_TO;
}
pathV(pathParser, points) {
const { x, y } = PathElement.pathV(pathParser).point;
points.push(x, y);
return PathParser.LINE_TO;
}
pathC(pathParser, points) {
const { point, controlPoint, currentPoint } = PathElement.pathC(pathParser);
points.push(point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
}
pathS(pathParser, points) {
const { point, controlPoint, currentPoint } = PathElement.pathS(pathParser);
points.push(point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
return PathParser.CURVE_TO;
}
pathQ(pathParser, points) {
const { controlPoint, currentPoint } = PathElement.pathQ(pathParser);
points.push(controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
}
pathT(pathParser, points) {
const { controlPoint, currentPoint } = PathElement.pathT(pathParser);
points.push(controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
return PathParser.QUAD_TO;
}
pathA(pathParser) {
let { rX, rY, sweepFlag, xAxisRotation, centp, a1, ad } = PathElement.pathA(pathParser);
if (sweepFlag === 0 && ad > 0) {
ad -= 2 * Math.PI;
}
if (sweepFlag === 1 && ad < 0) {
ad += 2 * Math.PI;
}
return [
centp.x,
centp.y,
rX,
rY,
a1,
ad,
xAxisRotation,
sweepFlag
];
}
calcLength(x, y, commandType, points) {
let len = 0;
let p1 = null;
let p2 = null;
let t = 0;
switch (commandType) {
case PathParser.LINE_TO:
return this.getLineLength(x, y, points[0], points[1]);
case PathParser.CURVE_TO:
// Approximates by breaking curve into 100 line segments
len = 0.0;
p1 = this.getPointOnCubicBezier(0, x, y, points[0], points[1], points[2], points[3], points[4], points[5]);
for (t = 0.01; t <= 1; t += 0.01) {
p2 = this.getPointOnCubicBezier(t, x, y, points[0], points[1], points[2], points[3], points[4], points[5]);
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
p1 = p2;
}
return len;
case PathParser.QUAD_TO:
// Approximates by breaking curve into 100 line segments
len = 0.0;
p1 = this.getPointOnQuadraticBezier(0, x, y, points[0], points[1], points[2], points[3]);
for (t = 0.01; t <= 1; t += 0.01) {
p2 = this.getPointOnQuadraticBezier(t, x, y, points[0], points[1], points[2], points[3]);
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
p1 = p2;
}
return len;
case PathParser.ARC: {
// Approximates by breaking curve into line segments
len = 0.0;
const start = points[4];
// 4 = theta
const dTheta = points[5];
// 5 = dTheta
const end = points[4] + dTheta;
let inc = Math.PI / 180.0;
// 1 degree resolution
if (Math.abs(start - end) < inc) {
inc = Math.abs(start - end);
}
// Note: for purpose of calculating arc length, not going to worry about rotating X-axis by angle psi
p1 = this.getPointOnEllipticalArc(points[0], points[1], points[2], points[3], start, 0);
if (dTheta < 0) { // clockwise
for (t = start - inc; t > end; t -= inc) {
p2 = this.getPointOnEllipticalArc(points[0], points[1], points[2], points[3], t, 0);
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
p1 = p2;
}
}
else { // counter-clockwise
for (t = start + inc; t < end; t += inc) {
p2 = this.getPointOnEllipticalArc(points[0], points[1], points[2], points[3], t, 0);
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
p1 = p2;
}
}
p2 = this.getPointOnEllipticalArc(points[0], points[1], points[2], points[3], end, 0);
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
return len;
}
}
return 0;
}
getPointOnLine(dist, p1x, p1y, p2x, p2y, fromX = p1x, fromY = p1y) {
const m = (p2y - p1y) / ((p2x - p1x) + PSEUDO_ZERO);
let run = Math.sqrt(dist * dist / (1 + m * m));
if (p2x < p1x) {
run *= -1;
}
let rise = m * run;
let pt = null;
if (p2x === p1x) { // vertical line
pt = {
x: fromX,
y: fromY + rise
};
}
else if ((fromY - p1y) / ((fromX - p1x) + PSEUDO_ZERO) === m) {
pt = {
x: fromX + run,
y: fromY + rise
};
}
else {
let ix = 0;
let iy = 0;
const len = this.getLineLength(p1x, p1y, p2x, p2y);
if (len < PSEUDO_ZERO) {
return null;
}
let u = ((fromX - p1x) * (p2x - p1x))
+ ((fromY - p1y) * (p2y - p1y));
u /= len * len;
ix = p1x + u * (p2x - p1x);
iy = p1y + u * (p2y - p1y);
const pRise = this.getLineLength(fromX, fromY, ix, iy);
const pRun = Math.sqrt(dist * dist - pRise * pRise);
run = Math.sqrt(pRun * pRun / (1 + m * m));
if (p2x < p1x) {
run *= -1;
}
rise = m * run;
pt = {
x: ix + run,
y: iy + rise
};
}
return pt;
}
getPointOnPath(distance) {
const fullLen = this.getPathLength();
let cumulativePathLength = 0;
let p = null;
if (distance < -0.00005
|| distance - 0.00005 > fullLen) {
return null;
}
const { dataArray } = this;
for (const command of dataArray) {
if (command
&& (command.pathLength < 0.00005
|| cumulativePathLength + command.pathLength + 0.00005 < distance)) {
cumulativePathLength += command.pathLength;
continue;
}
const delta = distance - cumulativePathLength;
let currentT = 0;
switch (command.type) {
case PathParser.LINE_TO:
p = this.getPointOnLine(delta, command.start.x, command.start.y, command.points[0], command.points[1], command.start.x, command.start.y);
break;
case PathParser.ARC: {
const start = command.points[4];
// 4 = theta
const dTheta = command.points[5];
// 5 = dTheta
const end = command.points[4] + dTheta;
currentT = start + delta / command.pathLength * dTheta;
if (dTheta < 0 && currentT < end
|| dTheta >= 0 && currentT > end) {
break;
}
p = this.getPointOnEllipticalArc(command.points[0], command.points[1], command.points[2], command.points[3], currentT, command.points[6]);
break;
}
case PathParser.CURVE_TO:
currentT = delta / command.pathLength;
if (currentT > 1) {
currentT = 1;
}
p = this.getPointOnCubicBezier(currentT, command.start.x, command.start.y, command.points[0], command.points[1], command.points[2], command.points[3], command.points[4], command.points[5]);
break;
case PathParser.QUAD_TO:
currentT = delta / command.pathLength;
if (currentT > 1) {
currentT = 1;
}
p = this.getPointOnQuadraticBezier(currentT, command.start.x, command.start.y, command.points[0], command.points[1], command.points[2], command.points[3]);
break;
}
if (p) {
return p;
}
break;
}
return null;
}
getLineLength(x1, y1, x2, y2) {
return Math.sqrt((x2 - x1) * (x2 - x1)
+ (y2 - y1) * (y2 - y1));
}
getPathLength() {
if (this.pathLength === -1) {
this.pathLength = this.dataArray.reduce((length, command) => (command.pathLength > 0
? length + command.pathLength
: length), 0);
}
return this.pathLength;
}
getPointOnCubicBezier(pct, p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) {
const x = p4x * CB1(pct) + p3x * CB2(pct) + p2x * CB3(pct) + p1x * CB4(pct);
const y = p4y * CB1(pct) + p3y * CB2(pct) + p2y * CB3(pct) + p1y * CB4(pct);
return {
x,
y
};
}
getPointOnQuadraticBezier(pct, p1x, p1y, p2x, p2y, p3x, p3y) {
const x = p3x * QB1(pct) + p2x * QB2(pct) + p1x * QB3(pct);
const y = p3y * QB1(pct) + p2y * QB2(pct) + p1y * QB3(pct);
return {
x,
y
};
}
getPointOnEllipticalArc(cx, cy, rx, ry, theta, psi) {
const cosPsi = Math.cos(psi);
const sinPsi = Math.sin(psi);
const pt = {
x: rx * Math.cos(theta),
y: ry * Math.sin(theta)
};
return {
x: cx + (pt.x * cosPsi - pt.y * sinPsi),
y: cy + (pt.x * sinPsi + pt.y * cosPsi)
};
}
// TODO need some optimisations. possibly build cache only for curved segments?
buildEquidistantCache(inputStep, inputPrecision) {
const fullLen = this.getPathLength();
const precision = inputPrecision || 0.25; // accuracy vs performance
const step = inputStep || fullLen / 100;
if (!this.equidistantCache
|| this.equidistantCache.step !== step
|| this.equidistantCache.precision !== precision) {
// Prepare cache
this.equidistantCache = {
step,
precision,
points: []
};
// Calculate points
let s = 0;
for (let l = 0; l <= fullLen; l += precision) {
const p0 = this.getPointOnPath(l);
const p1 = this.getPointOnPath(l + precision);
if (!p0 || !p1) {
continue;
}
s += this.getLineLength(p0.x, p0.y, p1.x, p1.y);
if (s >= step) {
this.equidistantCache.points.push({
x: p0.x,
y: p0.y,
distance: l
});
s -= step;
}
}
}
}
getEquidistantPointOnPath(targetDistance, step, precision) {
this.buildEquidistantCache(step, precision);
if (targetDistance < 0
|| targetDistance - this.getPathLength() > 0.00005) {
return null;
}
const idx = Math.round(targetDistance
/ this.getPathLength()
* (this.equidistantCache.points.length - 1));
return this.equidistantCache.points[idx] || null;
}
}
// groups: 1: mime-type (+ charset), 2: mime-type (w/o charset), 3: charset, 4: base64?, 5: body
const dataUriRegex = /^\s*data:(([^/,;]+\/[^/,;]+)(?:;([^,;=]+=[^,;=]+))?)?(?:;(base64))?,(.*)$/i;
class ImageElement extends RenderedElement {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'image';
this.loaded = false;
const href = this.getHrefAttribute().getString();
if (!href) {
return;
}
const isSvg = href.endsWith('.svg') || /^\s*data:image\/svg\+xml/i.test(href);
document.images.push(this);
if (!isSvg) {
void this.loadImage(href);
}
else {
void this.loadSvg(href);
}
this.isSvg = isSvg;
}
async loadImage(href) {
try {
const image = await this.document.createImage(href);
this.image = image;
}
catch (err) {
console.error(`Error while loading image "${href}":`, err);
}
this.loaded = true;
}
async loadSvg(href) {
const match = dataUriRegex.exec(href);
if (match) {
const data = match[5];
if (match[4] === 'base64') {
this.image = atob(data);
}
else {
this.image = decodeURIComponent(data);
}
}
else {
try {
const response = await this.document.fetch(href);
const svg = await response.text();
this.image = svg;
}
catch (err) {
console.error(`Error while loading image "${href}":`, err);
}
}
this.loaded = true;
}
renderChildren(ctx) {
const { document, image, loaded } = this;
const x = this.getAttribute('x').getPixels('x');
const y = this.getAttribute('y').getPixels('y');
const width = this.getStyle('width').getPixels('x');
const height = this.getStyle('height').getPixels('y');
if (!loaded || !image
|| !width || !height) {
return;
}
ctx.save();
ctx.translate(x, y);
if (this.isSvg) {
const subDocument = document.canvg.forkString(ctx, this.image, {
ignoreMouse: true,
ignoreAnimation: true,
ignoreDimensions: true,
ignoreClear: true,
offsetX: 0,
offsetY: 0,
scaleWidth: width,
scaleHeight: height
});
subDocument.document.documentElement.parent = this;
void subDocument.render();
}
else {
const image = this.image;
document.setViewBox({
ctx,
aspectRatio: this.getAttribute('preserveAspectRatio').getString(),
width,
desiredWidth: image.width,
height,
desiredHeight: image.height
});
if (this.loaded) {
if (typeof image.complete === 'undefined' || image.complete) {
ctx.drawImage(image, 0, 0);
}
}
}
ctx.restore();
}
getBoundingBox() {
const x = this.getAttribute('x').getPixels('x');
const y = this.getAttribute('y').getPixels('y');
const width = this.getStyle('width').getPixels('x');
const height = this.getStyle('height').getPixels('y');
return new BoundingBox(x, y, x + width, y + height);
}
}
class SymbolElement extends RenderedElement {
constructor() {
super(...arguments);
this.type = 'symbol';
}
render(_) {
// NO RENDER
}
}
class SVGFontLoader {
constructor(document) {
this.document = document;
this.loaded = false;
document.fonts.push(this);
}
async load(fontFamily, url) {
try {
const { document } = this;
const svgDocument = await document.canvg.parser.load(url);
const fonts = svgDocument.getElementsByTagName('font');
Array.from(fonts).forEach((fontNode) => {
const font = document.createElement(fontNode);
document.definitions[fontFamily] = font;
});
}
catch (err) {
console.error(`Error while loading font "${url}":`, err);
}
this.loaded = true;
}
}
class StyleElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'style';
const css = compressSpaces(Array.from(node.childNodes)
// NEED TEST
.map(_ => _.textContent)
.join('')
.replace(/(\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\/)|(^[\s]*\/\/.*)/gm, '') // remove comments
.replace(/@import.*;/g, '') // remove imports
);
const cssDefs = css.split('}');
cssDefs.forEach((_) => {
const def = _.trim();
if (!def) {
return;
}
const cssParts = def.split('{');
const cssClasses = cssParts[0].split(',');
const cssProps = cssParts[1].split(';');
cssClasses.forEach((_) => {
const cssClass = _.trim();
if (!cssClass) {
return;
}
const props = document.styles[cssClass] || {};
cssProps.forEach((cssProp) => {
const prop = cssProp.indexOf(':');
const name = cssProp.substr(0, prop).trim();
const value = cssProp.substr(prop + 1, cssProp.length - prop).trim();
if (name && value) {
props[name] = new Property(document, name, value);
}
});
document.styles[cssClass] = props;
document.stylesSpecificity[cssClass] = getSelectorSpecificity(cssClass);
if (cssClass === '@font-face') { // && !nodeEnv
const fontFamily = props['font-family'].getString().replace(/"|'/g, '');
const srcs = props.src.getString().split(',');
srcs.forEach((src) => {
if (src.indexOf('format("svg")') > 0) {
const url = parseExternalUrl(src);
if (url) {
void new SVGFontLoader(document).load(fontFamily, url);
}
}
});
}
});
});
}
}
StyleElement.parseExternalUrl = parseExternalUrl;
class UseElement extends RenderedElement {
constructor() {
super(...arguments);
this.type = 'use';
}
setContext(ctx) {
super.setContext(ctx);
const xAttr = this.getAttribute('x');
const yAttr = this.getAttribute('y');
if (xAttr.hasValue()) {
ctx.translate(xAttr.getPixels('x'), 0);
}
if (yAttr.hasValue()) {
ctx.translate(0, yAttr.getPixels('y'));
}
}
path(ctx) {
const { element } = this;
if (element) {
element.path(ctx);
}
}
renderChildren(ctx) {
const { document, element } = this;
if (element) {
let tempSvg = element;
if (element.type === 'symbol') {
// render me using a temporary svg element in symbol cases (http://www.w3.org/TR/SVG/struct.html#UseElement)
tempSvg = new SVGElement(document, null);
tempSvg.attributes.viewBox = new Property(document, 'viewBox', element.getAttribute('viewBox').getString());
tempSvg.attributes.preserveAspectRatio = new Property(document, 'preserveAspectRatio', element.getAttribute('preserveAspectRatio').getString());
tempSvg.attributes.overflow = new Property(document, 'overflow', element.getAttribute('overflow').getString());
tempSvg.children = element.children;
// element is still the parent of the children
element.styles.opacity = new Property(document, 'opacity', this.calculateOpacity());
}
if (tempSvg.type === 'svg') {
const widthStyle = this.getStyle('width', false, true);
const heightStyle = this.getStyle('height', false, true);
// if symbol or svg, inherit width/height from me
if (widthStyle.hasValue()) {
tempSvg.attributes.width = new Property(document, 'width', widthStyle.getString());
}
if (heightStyle.hasValue()) {
tempSvg.attributes.height = new Property(document, 'height', heightStyle.getString());
}
}
const oldParent = tempSvg.parent;
tempSvg.parent = this;
tempSvg.render(ctx);
tempSvg.parent = oldParent;
}
}
getBoundingBox(ctx) {
const { element } = this;
if (element) {
return element.getBoundingBox(ctx);
}
return null;
}
elementTransform() {
const { document, element } = this;
return Transform.fromElement(document, element);
}
get element() {
if (!this.cachedElement) {
this.cachedElement = this.getHrefAttribute().getDefinition();
}
return this.cachedElement;
}
}
function imGet(img, x, y, width, _height, rgba) {
return img[y * width * 4 + x * 4 + rgba];
}
function imSet(img, x, y, width, _height, rgba, val) {
img[y * width * 4 + x * 4 + rgba] = val;
}
function m(matrix, i, v) {
const mi = matrix[i];
return mi * v;
}
function c(a, m1, m2, m3) {
return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
}
class FeColorMatrixElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'feColorMatrix';
let matrix = toNumbers(this.getAttribute('values').getString());
switch (this.getAttribute('type').getString('matrix')) { // http://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
case 'saturate': {
const s = matrix[0];
/* eslint-disable array-element-newline */
matrix = [
0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0,
0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0,
0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0,
0, 0, 0, 1, 0,
0, 0, 0, 0, 1
];
/* eslint-enable array-element-newline */
break;
}
case 'hueRotate': {
const a = matrix[0] * Math.PI / 180.0;
/* eslint-disable array-element-newline */
matrix = [
c(a, 0.213, 0.787, -0.213), c(a, 0.715, -0.715, -0.715), c(a, 0.072, -0.072, 0.928), 0, 0,
c(a, 0.213, -0.213, 0.143), c(a, 0.715, 0.285, 0.140), c(a, 0.072, -0.072, -0.283), 0, 0,
c(a, 0.213, -0.213, -0.787), c(a, 0.715, -0.715, 0.715), c(a, 0.072, 0.928, 0.072), 0, 0,
0, 0, 0, 1, 0,
0, 0, 0, 0, 1
];
/* eslint-enable array-element-newline */
break;
}
case 'luminanceToAlpha':
/* eslint-disable array-element-newline */
matrix = [
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0.2125, 0.7154, 0.0721, 0, 0,
0, 0, 0, 0, 1
];
/* eslint-enable array-element-newline */
break;
}
this.matrix = matrix;
this.includeOpacity = this.getAttribute('includeOpacity').hasValue();
}
apply(ctx, _x, _y, width, height) {
// assuming x==0 && y==0 for now
const { includeOpacity, matrix } = this;
const srcData = ctx.getImageData(0, 0, width, height);
for (let y = 0; y < height; y++) {
for (let x = 0; x < width; x++) {
const r = imGet(srcData.data, x, y, width, height, 0);
const g = imGet(srcData.data, x, y, width, height, 1);
const b = imGet(srcData.data, x, y, width, height, 2);
const a = imGet(srcData.data, x, y, width, height, 3);
let nr = m(matrix, 0, r) + m(matrix, 1, g) + m(matrix, 2, b) + m(matrix, 3, a) + m(matrix, 4, 1);
let ng = m(matrix, 5, r) + m(matrix, 6, g) + m(matrix, 7, b) + m(matrix, 8, a) + m(matrix, 9, 1);
let nb = m(matrix, 10, r) + m(matrix, 11, g) + m(matrix, 12, b) + m(matrix, 13, a) + m(matrix, 14, 1);
let na = m(matrix, 15, r) + m(matrix, 16, g) + m(matrix, 17, b) + m(matrix, 18, a) + m(matrix, 19, 1);
if (includeOpacity) {
nr = 0;
ng = 0;
nb = 0;
na *= a / 255;
}
imSet(srcData.data, x, y, width, height, 0, nr);
imSet(srcData.data, x, y, width, height, 1, ng);
imSet(srcData.data, x, y, width, height, 2, nb);
imSet(srcData.data, x, y, width, height, 3, na);
}
}
ctx.clearRect(0, 0, width, height);
ctx.putImageData(srcData, 0, 0);
}
}
class MaskElement extends Element {
constructor() {
super(...arguments);
this.type = 'mask';
}
apply(ctx, element) {
const { document } = this;
// render as temp svg
let x = this.getAttribute('x').getPixels('x');
let y = this.getAttribute('y').getPixels('y');
let width = this.getStyle('width').getPixels('x');
let height = this.getStyle('height').getPixels('y');
if (!width && !height) {
const boundingBox = new BoundingBox();
this.children.forEach((child) => {
boundingBox.addBoundingBox(child.getBoundingBox(ctx));
});
x = Math.floor(boundingBox.x1);
y = Math.floor(boundingBox.y1);
width = Math.floor(boundingBox.width);
height = Math.floor(boundingBox.height);
}
const ignoredStyles = this.removeStyles(element, MaskElement.ignoreStyles);
const maskCanvas = document.createCanvas(x + width, y + height);
const maskCtx = maskCanvas.getContext('2d');
document.screen.setDefaults(maskCtx);
this.renderChildren(maskCtx);
// convert mask to alpha with a fake node
// TODO: refactor out apply from feColorMatrix
new FeColorMatrixElement(document, ({
nodeType: 1,
childNodes: [],
attributes: [
{
nodeName: 'type',
value: 'luminanceToAlpha'
},
{
nodeName: 'includeOpacity',
value: 'true'
}
]
})).apply(maskCtx, 0, 0, x + width, y + height);
const tmpCanvas = document.createCanvas(x + width, y + height);
const tmpCtx = tmpCanvas.getContext('2d');
document.screen.setDefaults(tmpCtx);
element.render(tmpCtx);
tmpCtx.globalCompositeOperation = 'destination-in';
tmpCtx.fillStyle = maskCtx.createPattern(maskCanvas, 'no-repeat');
tmpCtx.fillRect(0, 0, x + width, y + height);
ctx.fillStyle = tmpCtx.createPattern(tmpCanvas, 'no-repeat');
ctx.fillRect(0, 0, x + width, y + height);
// reassign mask
this.restoreStyles(element, ignoredStyles);
}
render(_) {
// NO RENDER
}
}
MaskElement.ignoreStyles = [
'mask',
'transform',
'clip-path'
];
const noop = () => {
// NOOP
};
class ClipPathElement extends Element {
constructor() {
super(...arguments);
this.type = 'clipPath';
}
apply(ctx) {
const { document } = this;
const contextProto = Reflect.getPrototypeOf(ctx);
const { beginPath, closePath } = ctx;
if (contextProto) {
contextProto.beginPath = noop;
contextProto.closePath = noop;
}
Reflect.apply(beginPath, ctx, []);
this.children.forEach((child) => {
if (typeof child.path === 'undefined') {
return;
}
let transform = typeof child.elementTransform !== 'undefined'
? child.elementTransform()
: null; // handle <use />
if (!transform) {
transform = Transform.fromElement(document, child);
}
if (transform) {
transform.apply(ctx);
}
child.path(ctx);
if (contextProto) {
contextProto.closePath = closePath;
}
if (transform) {
transform.unapply(ctx);
}
});
Reflect.apply(closePath, ctx, []);
ctx.clip();
if (contextProto) {
contextProto.beginPath = beginPath;
contextProto.closePath = closePath;
}
}
render(_) {
// NO RENDER
}
}
class FilterElement extends Element {
constructor() {
super(...arguments);
this.type = 'filter';
}
apply(ctx, element) {
// render as temp svg
const { document, children } = this;
const boundingBox = element.getBoundingBox(ctx);
if (!boundingBox) {
return;
}
let px = 0;
let py = 0;
children.forEach((child) => {
const efd = child.extraFilterDistance || 0;
px = Math.max(px, efd);
py = Math.max(py, efd);
});
const width = Math.floor(boundingBox.width);
const height = Math.floor(boundingBox.height);
const tmpCanvasWidth = width + 2 * px;
const tmpCanvasHeight = height + 2 * py;
if (tmpCanvasWidth < 1 || tmpCanvasHeight < 1) {
return;
}
const x = Math.floor(boundingBox.x);
const y = Math.floor(boundingBox.y);
const ignoredStyles = this.removeStyles(element, FilterElement.ignoreStyles);
const tmpCanvas = document.createCanvas(tmpCanvasWidth, tmpCanvasHeight);
const tmpCtx = tmpCanvas.getContext('2d');
document.screen.setDefaults(tmpCtx);
tmpCtx.translate(-x + px, -y + py);
element.render(tmpCtx);
// apply filters
children.forEach((child) => {
if (typeof child.apply === 'function') {
child.apply(tmpCtx, 0, 0, tmpCanvasWidth, tmpCanvasHeight);
}
});
// render on me
ctx.drawImage(tmpCanvas, 0, 0, tmpCanvasWidth, tmpCanvasHeight, x - px, y - py, tmpCanvasWidth, tmpCanvasHeight);
this.restoreStyles(element, ignoredStyles);
}
render(_) {
// NO RENDER
}
}
FilterElement.ignoreStyles = [
'filter',
'transform',
'clip-path'
];
class FeDropShadowElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'feDropShadow';
this.addStylesFromStyleDefinition();
}
apply(_, _x, _y, _width, _height) {
// TODO: implement
}
}
class FeMorphologyElement extends Element {
constructor() {
super(...arguments);
this.type = 'feMorphology';
}
apply(_, _x, _y, _width, _height) {
// TODO: implement
}
}
class FeCompositeElement extends Element {
constructor() {
super(...arguments);
this.type = 'feComposite';
}
apply(_, _x, _y, _width, _height) {
// TODO: implement
}
}
class FeGaussianBlurElement extends Element {
constructor(document, node, captureTextNodes) {
super(document, node, captureTextNodes);
this.type = 'feGaussianBlur';
this.blurRadius = Math.floor(this.getAttribute('stdDeviation').getNumber());
this.extraFilterDistance = this.blurRadius;
}
apply(ctx, x, y, width, height) {
const { document, blurRadius } = this;
const body = document.window
? document.window.document.body
: null;
const canvas = ctx.canvas;
// StackBlur requires canvas be on document
canvas.id = document.getUniqueId();
if (body) {
canvas.style.display = 'none';
body.appendChild(canvas);
}
canvasRGBA(canvas, x, y, width, height, blurRadius);
if (body) {
body.removeChild(canvas);
}
}
}
class TitleElement extends Element {
constructor() {
super(...arguments);
this.type = 'title';
}
}
class DescElement extends Element {
constructor() {
super(...arguments);
this.type = 'desc';
}
}
const elements = {
'svg': SVGElement,
'rect': RectElement,
'circle': CircleElement,
'ellipse': EllipseElement,
'line': LineElement,
'polyline': PolylineElement,
'polygon': PolygonElement,
'path': PathElement,
'pattern': PatternElement,
'marker': MarkerElement,
'defs': DefsElement,
'linearGradient': LinearGradientElement,
'radialGradient': RadialGradientElement,
'stop': StopElement,
'animate': AnimateElement,
'animateColor': AnimateColorElement,
'animateTransform': AnimateTransformElement,
'font': FontElement,
'font-face': FontFaceElement,
'missing-glyph': MissingGlyphElement,
'glyph': GlyphElement,
'text': TextElement,
'tspan': TSpanElement,
'tref': TRefElement,
'a': AElement,
'textPath': TextPathElement,
'image': ImageElement,
'g': GElement,
'symbol': SymbolElement,
'style': StyleElement,
'use': UseElement,
'mask': MaskElement,
'clipPath': ClipPathElement,
'filter': FilterElement,
'feDropShadow': FeDropShadowElement,
'feMorphology': FeMorphologyElement,
'feComposite': FeCompositeElement,
'feColorMatrix': FeColorMatrixElement,
'feGaussianBlur': FeGaussianBlurElement,
'title': TitleElement,
'desc': DescElement
};
function createCanvas(width, height) {
const canvas = document.createElement('canvas');
canvas.width = width;
canvas.height = height;
return canvas;
}
async function createImage(src, anonymousCrossOrigin = false) {
const image = document.createElement('img');
if (anonymousCrossOrigin) {
image.crossOrigin = 'Anonymous';
}
return new Promise((resolve, reject) => {
image.onload = () => {
resolve(image);
};
image.onerror = (_event, _source, _lineno, _colno, error) => {
reject(error);
};
image.src = src;
});
}
class Document {
constructor(canvg, { rootEmSize = 12, emSize = 12, createCanvas = Document.createCanvas, createImage = Document.createImage, anonymousCrossOrigin } = {}) {
this.canvg = canvg;
this.definitions = {};
this.styles = {};
this.stylesSpecificity = {};
this.images = [];
this.fonts = [];
this.emSizeStack = [];
this.uniqueId = 0;
this.screen = canvg.screen;
this.rootEmSize = rootEmSize;
this.emSize = emSize;
this.createCanvas = createCanvas;
this.createImage = this.bindCreateImage(createImage, anonymousCrossOrigin);
this.screen.wait(this.isImagesLoaded.bind(this));
this.screen.wait(this.isFontsLoaded.bind(this));
}
bindCreateImage(createImage, anonymousCrossOrigin) {
if (typeof anonymousCrossOrigin === 'boolean') {
return (source, forceAnonymousCrossOrigin) => createImage(source, typeof forceAnonymousCrossOrigin === 'boolean'
? forceAnonymousCrossOrigin
: anonymousCrossOrigin);
}
return createImage;
}
get window() {
return this.screen.window;
}
get fetch() {
return this.screen.fetch;
}
get ctx() {
return this.screen.ctx;
}
get emSize() {
const { emSizeStack } = this;
return emSizeStack[emSizeStack.length - 1];
}
set emSize(value) {
const { emSizeStack } = this;
emSizeStack.push(value);
}
popEmSize() {
const { emSizeStack } = this;
emSizeStack.pop();
}
getUniqueId() {
return `canvg${++this.uniqueId}`;
}
isImagesLoaded() {
return this.images.every(_ => _.loaded);
}
isFontsLoaded() {
return this.fonts.every(_ => _.loaded);
}
createDocumentElement(document) {
const documentElement = this.createElement(document.documentElement);
documentElement.root = true;
documentElement.addStylesFromStyleDefinition();
this.documentElement = documentElement;
return documentElement;
}
createElement(node) {
const elementType = node.nodeName.replace(/^[^:]+:/, '');
const ElementType = Document.elementTypes[elementType];
if (typeof ElementType !== 'undefined') {
return new ElementType(this, node);
}
return new UnknownElement(this, node);
}
createTextNode(node) {
return new TextNode(this, node);
}
setViewBox(config) {
this.screen.setViewBox({
document: this,
...config
});
}
}
Document.createCanvas = createCanvas;
Document.createImage = createImage;
Document.elementTypes = elements;
/**
* SVG renderer on canvas.
*/
class Canvg {
/**
* Main constructor.
* @param ctx - Rendering context.
* @param svg - SVG Document.
* @param options - Rendering options.
*/
constructor(ctx, svg, options = {}) {
this.parser = new Parser(options);
this.screen = new Screen(ctx, options);
this.options = options;
const document = new Document(this, options);
const documentElement = document.createDocumentElement(svg);
this.document = document;
this.documentElement = documentElement;
}
/**
* Create Canvg instance from SVG source string or URL.
* @param ctx - Rendering context.
* @param svg - SVG source string or URL.
* @param options - Rendering options.
* @returns Canvg instance.
*/
static async from(ctx, svg, options = {}) {
const parser = new Parser(options);
const svgDocument = await parser.parse(svg);
return new Canvg(ctx, svgDocument, options);
}
/**
* Create Canvg instance from SVG source string.
* @param ctx - Rendering context.
* @param svg - SVG source string.
* @param options - Rendering options.
* @returns Canvg instance.
*/
static fromString(ctx, svg, options = {}) {
const parser = new Parser(options);
const svgDocument = parser.parseFromString(svg);
return new Canvg(ctx, svgDocument, options);
}
/**
* Create new Canvg instance with inherited options.
* @param ctx - Rendering context.
* @param svg - SVG source string or URL.
* @param options - Rendering options.
* @returns Canvg instance.
*/
fork(ctx, svg, options = {}) {
return Canvg.from(ctx, svg, {
...this.options,
...options
});
}
/**
* Create new Canvg instance with inherited options.
* @param ctx - Rendering context.
* @param svg - SVG source string.
* @param options - Rendering options.
* @returns Canvg instance.
*/
forkString(ctx, svg, options = {}) {
return Canvg.fromString(ctx, svg, {
...this.options,
...options
});
}
/**
* Document is ready promise.
* @returns Ready promise.
*/
ready() {
return this.screen.ready();
}
/**
* Document is ready value.
* @returns Is ready or not.
*/
isReady() {
return this.screen.isReady();
}
/**
* Render only first frame, ignoring animations and mouse.
* @param options - Rendering options.
*/
async render(options = {}) {
this.start({
enableRedraw: true,
ignoreAnimation: true,
ignoreMouse: true,
...options
});
await this.ready();
this.stop();
}
/**
* Start rendering.
* @param options - Render options.
*/
start(options = {}) {
const { documentElement, screen, options: baseOptions } = this;
screen.start(documentElement, {
enableRedraw: true,
...baseOptions,
...options
});
}
/**
* Stop rendering.
*/
stop() {
this.screen.stop();
}
/**
* Resize SVG to fit in given size.
* @param width
* @param height
* @param preserveAspectRatio
*/
resize(width, height = width, preserveAspectRatio = false) {
this.documentElement.resize(width, height, preserveAspectRatio);
}
}
export { AElement, AnimateColorElement, AnimateElement, AnimateTransformElement, BoundingBox, CB1, CB2, CB3, CB4, Canvg, CircleElement, ClipPathElement, DefsElement, DescElement, Document, Element, EllipseElement, FeColorMatrixElement, FeCompositeElement, FeDropShadowElement, FeGaussianBlurElement, FeMorphologyElement, FilterElement, Font, FontElement, FontFaceElement, GElement, GlyphElement, GradientElement, ImageElement, LineElement, LinearGradientElement, MarkerElement, MaskElement, Matrix, MissingGlyphElement, Mouse, PSEUDO_ZERO, Parser, PathElement, PathParser, PatternElement, Point, PolygonElement, PolylineElement, Property, QB1, QB2, QB3, RadialGradientElement, RectElement, RenderedElement, Rotate, SVGElement, SVGFontLoader, Scale, Screen, Skew, SkewX, SkewY, StopElement, StyleElement, SymbolElement, TRefElement, TSpanElement, TextElement, TextPathElement, TitleElement, Transform, Translate, UnknownElement, UseElement, ViewPort, compressSpaces, Canvg as default, getSelectorSpecificity, normalizeAttributeName, normalizeColor, parseExternalUrl, index as presets, toNumbers, trimLeft, trimRight, vectorMagnitude, vectorsAngle, vectorsRatio };
//# 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:: Command execute :: | |
--[ c99shell v. 2.5 [PHP 8 Update] [24.05.2025] | Generation time: 0.0066 ]-- |