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442 lines
15 KiB
JavaScript
442 lines
15 KiB
JavaScript
/*
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* Copyright (C) 2023-2025 Yomitan Authors
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* Copyright (C) 2021-2022 Yomichan Authors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {getDownstepPositions, getKanaDiacriticInfo, isMoraPitchHigh} from '../language/ja/japanese.js';
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export class PronunciationGenerator {
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/**
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* Creates a new instance of the class.
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* @param {Document} document
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*/
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constructor(document) {
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/** @type {Document} */
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this._document = document;
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}
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/**
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* @param {string[]} morae
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* @param {number | string} pitchPositions
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* @param {number[]} nasalPositions
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* @param {number[]} devoicePositions
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* @returns {HTMLSpanElement}
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*/
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createPronunciationText(morae, pitchPositions, nasalPositions, devoicePositions) {
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const nasalPositionsSet = nasalPositions.length > 0 ? new Set(nasalPositions) : null;
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const devoicePositionsSet = devoicePositions.length > 0 ? new Set(devoicePositions) : null;
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const container = this._document.createElement('span');
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container.className = 'pronunciation-text';
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for (let i = 0, ii = morae.length; i < ii; ++i) {
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const i1 = i + 1;
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const mora = morae[i];
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const highPitch = isMoraPitchHigh(i, pitchPositions);
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const highPitchNext = isMoraPitchHigh(i1, pitchPositions);
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const nasal = nasalPositionsSet !== null && nasalPositionsSet.has(i1);
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const devoice = devoicePositionsSet !== null && devoicePositionsSet.has(i1);
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const n1 = this._document.createElement('span');
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n1.className = 'pronunciation-mora';
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n1.dataset.position = `${i}`;
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n1.dataset.pitch = highPitch ? 'high' : 'low';
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n1.dataset.pitchNext = highPitchNext ? 'high' : 'low';
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const characterNodes = [];
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for (const character of mora) {
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const n2 = this._document.createElement('span');
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n2.className = 'pronunciation-character';
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n2.textContent = character;
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n1.appendChild(n2);
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characterNodes.push(n2);
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}
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if (devoice) {
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n1.dataset.devoice = 'true';
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const n3 = this._document.createElement('span');
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n3.className = 'pronunciation-devoice-indicator';
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n1.appendChild(n3);
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}
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if (nasal && characterNodes.length > 0) {
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n1.dataset.nasal = 'true';
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const group = this._document.createElement('span');
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group.className = 'pronunciation-character-group';
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const n2 = characterNodes[0];
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const character = /** @type {string} */ (n2.textContent);
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const characterInfo = getKanaDiacriticInfo(character);
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if (characterInfo !== null) {
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n1.dataset.originalText = mora;
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n2.dataset.originalText = character;
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n2.textContent = characterInfo.character;
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}
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let n3 = this._document.createElement('span');
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n3.className = 'pronunciation-nasal-diacritic';
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n3.textContent = '\u309a'; // Combining handakuten
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group.appendChild(n3);
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n3 = this._document.createElement('span');
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n3.className = 'pronunciation-nasal-indicator';
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group.appendChild(n3);
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/** @type {ParentNode} */ (n2.parentNode).replaceChild(group, n2);
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group.insertBefore(n2, group.firstChild);
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}
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const line = this._document.createElement('span');
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line.className = 'pronunciation-mora-line';
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n1.appendChild(line);
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container.appendChild(n1);
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}
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return container;
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}
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/**
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* @param {string[]} morae
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* @param {number | string} pitchPositions
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* @returns {SVGSVGElement}
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*/
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createPronunciationGraph(morae, pitchPositions) {
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const ii = morae.length;
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const svgns = 'http://www.w3.org/2000/svg';
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const svg = this._document.createElementNS(svgns, 'svg');
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svg.setAttribute('xmlns', svgns);
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svg.setAttribute('class', 'pronunciation-graph');
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svg.setAttribute('focusable', 'false');
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svg.setAttribute('viewBox', `0 0 ${50 * (ii + 1)} 100`);
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if (ii <= 0) { return svg; }
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const path1 = this._document.createElementNS(svgns, 'path');
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svg.appendChild(path1);
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const path2 = this._document.createElementNS(svgns, 'path');
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svg.appendChild(path2);
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const pathPoints = [];
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for (let i = 0; i < ii; ++i) {
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const highPitch = isMoraPitchHigh(i, pitchPositions);
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const highPitchNext = isMoraPitchHigh(i + 1, pitchPositions);
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const x = i * 50 + 25;
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const y = highPitch ? 25 : 75;
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if (highPitch && !highPitchNext) {
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this._addGraphDotDownstep(svg, svgns, x, y);
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} else {
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this._addGraphDot(svg, svgns, x, y);
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}
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pathPoints.push(`${x} ${y}`);
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}
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path1.setAttribute('class', 'pronunciation-graph-line');
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path1.setAttribute('d', `M${pathPoints.join(' L')}`);
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pathPoints.splice(0, ii - 1);
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{
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const highPitch = isMoraPitchHigh(ii, pitchPositions);
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const x = ii * 50 + 25;
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const y = highPitch ? 25 : 75;
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this._addGraphTriangle(svg, svgns, x, y);
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pathPoints.push(`${x} ${y}`);
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}
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path2.setAttribute('class', 'pronunciation-graph-line-tail');
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path2.setAttribute('d', `M${pathPoints.join(' L')}`);
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return svg;
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}
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/**
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* @param {number | string} downstepPositions
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* @returns {HTMLSpanElement}
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*/
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createPronunciationDownstepPosition(downstepPositions) {
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const downsteps = typeof downstepPositions === 'string' ? getDownstepPositions(downstepPositions) : downstepPositions;
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const downstepPositionString = `${downsteps}`;
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const n1 = this._document.createElement('span');
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n1.className = 'pronunciation-downstep-notation';
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n1.dataset.downstepPosition = downstepPositionString;
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let n2 = this._document.createElement('span');
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n2.className = 'pronunciation-downstep-notation-prefix';
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n2.textContent = '[';
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n1.appendChild(n2);
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n2 = this._document.createElement('span');
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n2.className = 'pronunciation-downstep-notation-number';
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n2.textContent = downstepPositionString;
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n1.appendChild(n2);
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n2 = this._document.createElement('span');
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n2.className = 'pronunciation-downstep-notation-suffix';
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n2.textContent = ']';
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n1.appendChild(n2);
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return n1;
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}
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// The following Jidoujisho pitch graph code is based on code from
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// https://github.com/lrorpilla/jidoujisho licensed under the
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// GNU General Public License v3.0
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/**
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* Create a pronounciation graph in the style of Jidoujisho
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* @param {string[]} mora
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* @param {number | string} pitchPositions
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* @returns {SVGSVGElement}
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*/
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createPronunciationGraphJJ(mora, pitchPositions) {
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const patt = this._pitchValueToPattJJ(mora.length, pitchPositions);
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const positions = Math.max(mora.length, patt.length);
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const stepWidth = 35;
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const marginLr = 16;
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const svgWidth = Math.max(0, ((positions - 1) * stepWidth) + (marginLr * 2));
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const svgns = 'http://www.w3.org/2000/svg';
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const svg = this._document.createElementNS(svgns, 'svg');
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svg.setAttribute('xmlns', svgns);
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svg.setAttribute('width', `${(svgWidth * (3 / 5))}px`);
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svg.setAttribute('height', '45px');
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svg.setAttribute('viewBox', `0 0 ${svgWidth} 75`);
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if (mora.length <= 0) { return svg; }
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for (let i = 0; i < mora.length; i++) {
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const xCenter = marginLr + (i * stepWidth);
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this._textJJ(xCenter - 11, mora[i], svgns, svg);
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}
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let pathType = '';
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const circles = [];
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const paths = [];
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let prevCenter = [-1, -1];
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for (let i = 0; i < patt.length; i++) {
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const xCenter = marginLr + (i * stepWidth);
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const accent = patt[i];
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let yCenter = 0;
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if (accent === 'H') {
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yCenter = 5;
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} else if (accent === 'L') {
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yCenter = 30;
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}
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circles.push(this._circleJJ(xCenter, yCenter, i >= mora.length, svgns));
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if (i > 0) {
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if (prevCenter[1] === yCenter) {
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pathType = 's';
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} else if (prevCenter[1] < yCenter) {
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pathType = 'd';
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} else if (prevCenter[1] > yCenter) {
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pathType = 'u';
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}
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paths.push(this._pathJJ(prevCenter[0], prevCenter[1], pathType, stepWidth, svgns));
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}
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prevCenter = [xCenter, yCenter];
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}
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for (const path of paths) {
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svg.appendChild(path);
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}
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for (const circle of circles) {
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svg.appendChild(circle);
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}
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return svg;
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}
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// Private
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/**
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* @param {Element} container
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* @param {string} svgns
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* @param {number} x
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* @param {number} y
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*/
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_addGraphDot(container, svgns, x, y) {
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container.appendChild(this._createGraphCircle(svgns, 'pronunciation-graph-dot', x, y, '15'));
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}
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/**
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* @param {Element} container
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* @param {string} svgns
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* @param {number} x
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* @param {number} y
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*/
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_addGraphDotDownstep(container, svgns, x, y) {
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container.appendChild(this._createGraphCircle(svgns, 'pronunciation-graph-dot-downstep1', x, y, '15'));
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container.appendChild(this._createGraphCircle(svgns, 'pronunciation-graph-dot-downstep2', x, y, '5'));
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}
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/**
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* @param {Element} container
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* @param {string} svgns
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* @param {number} x
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* @param {number} y
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*/
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_addGraphTriangle(container, svgns, x, y) {
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const node = this._document.createElementNS(svgns, 'path');
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node.setAttribute('class', 'pronunciation-graph-triangle');
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node.setAttribute('d', 'M0 13 L15 -13 L-15 -13 Z');
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node.setAttribute('transform', `translate(${x},${y})`);
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container.appendChild(node);
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}
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/**
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* @param {string} svgns
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* @param {string} className
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* @param {number} x
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* @param {number} y
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* @param {string} radius
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* @returns {Element}
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*/
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_createGraphCircle(svgns, className, x, y, radius) {
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const node = this._document.createElementNS(svgns, 'circle');
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node.setAttribute('class', className);
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node.setAttribute('cx', `${x}`);
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node.setAttribute('cy', `${y}`);
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node.setAttribute('r', radius);
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return node;
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}
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/**
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* Get H&L pattern
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* @param {number} numberOfMora
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* @param {number | string} pitchValue
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* @returns {string}
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*/
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_pitchValueToPattJJ(numberOfMora, pitchValue) {
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if (typeof pitchValue === 'string') { return pitchValue + pitchValue[pitchValue.length - 1]; }
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if (numberOfMora >= 1) {
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if (pitchValue === 0) {
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// Heiban
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return `L${'H'.repeat(numberOfMora)}`;
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} else if (pitchValue === 1) {
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// Atamadaka
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return `H${'L'.repeat(numberOfMora)}`;
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} else if (pitchValue >= 2) {
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const stepdown = pitchValue - 2;
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return `LH${'H'.repeat(stepdown)}${'L'.repeat(numberOfMora - pitchValue + 1)}`;
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}
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}
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return '';
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}
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/**
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* @param {number} x
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* @param {number} y
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* @param {boolean} o
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* @param {string} svgns
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* @returns {Element}
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*/
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_circleJJ(x, y, o, svgns) {
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if (o) {
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const node = this._document.createElementNS(svgns, 'circle');
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node.setAttribute('r', '4');
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node.setAttribute('cx', `${(x + 4)}`);
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node.setAttribute('cy', `${y}`);
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node.setAttribute('stroke', 'currentColor');
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node.setAttribute('stroke-width', '2');
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node.setAttribute('fill', 'none');
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return node;
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} else {
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const node = this._document.createElementNS(svgns, 'circle');
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node.setAttribute('r', '5');
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node.setAttribute('cx', `${x}`);
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node.setAttribute('cy', `${y}`);
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node.setAttribute('style', 'opacity:1;fill:currentColor;');
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return node;
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}
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}
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/**
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* @param {number} x
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* @param {string} mora
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* @param {string} svgns
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* @param {SVGSVGElement} svg
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* @returns {void}
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*/
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_textJJ(x, mora, svgns, svg) {
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if (mora.length === 1) {
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const path = this._document.createElementNS(svgns, 'text');
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path.setAttribute('x', `${x}`);
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path.setAttribute('y', '67.5');
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path.setAttribute('style', 'font-size:20px;font-family:sans-serif;fill:currentColor;');
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path.textContent = mora;
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svg.appendChild(path);
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} else {
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const path1 = this._document.createElementNS(svgns, 'text');
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path1.setAttribute('x', `${x - 5}`);
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path1.setAttribute('y', '67.5');
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path1.setAttribute('style', 'font-size:20px;font-family:sans-serif;fill:currentColor;');
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path1.textContent = mora[0];
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svg.appendChild(path1);
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const path2 = this._document.createElementNS(svgns, 'text');
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path2.setAttribute('x', `${x + 12}`);
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path2.setAttribute('y', '67.5');
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path2.setAttribute('style', 'font-size:14px;font-family:sans-serif;fill:currentColor;');
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path2.textContent = mora[1];
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svg.appendChild(path2);
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}
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}
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/**
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* @param {number} x
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* @param {number} y
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* @param {string} type
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* @param {number} stepWidth
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* @param {string} svgns
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* @returns {Element}
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*/
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_pathJJ(x, y, type, stepWidth, svgns) {
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let delta = '';
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switch (type) {
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case 's':
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delta = stepWidth + ',0';
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break;
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case 'u':
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delta = stepWidth + ',-25';
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break;
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case 'd':
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delta = stepWidth + ',25';
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break;
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}
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const path = this._document.createElementNS(svgns, 'path');
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path.setAttribute('d', `m ${x},${y} ${delta}`);
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path.setAttribute('style', 'fill:none;stroke:currentColor;stroke-width:1.5;');
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return path;
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}
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}
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