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/*
* Copyright (C) 2021 Yomichan Authors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
class PronunciationGenerator {
constructor(japaneseUtil) {
this._japaneseUtil = japaneseUtil;
}
createPitchAccentHtml(morae, downstepPosition, nasalPositions, devoicePositions) {
const jp = this._japaneseUtil;
const nasalPositionsSet = nasalPositions.length > 0 ? new Set(nasalPositions) : null;
const devoicePositionsSet = devoicePositions.length > 0 ? new Set(devoicePositions) : null;
const fragment = document.createDocumentFragment();
for (let i = 0, ii = morae.length; i < ii; ++i) {
const i1 = i + 1;
const mora = morae[i];
const highPitch = jp.isMoraPitchHigh(i, downstepPosition);
const highPitchNext = jp.isMoraPitchHigh(i1, downstepPosition);
const nasal = nasalPositionsSet !== null && nasalPositionsSet.has(i1);
const devoice = devoicePositionsSet !== null && devoicePositionsSet.has(i1);
const n1 = document.createElement('span');
n1.className = 'pitch-accent-character';
n1.dataset.position = `${i}`;
n1.dataset.pitch = highPitch ? 'high' : 'low';
n1.dataset.pitchNext = highPitchNext ? 'high' : 'low';
const n2 = document.createElement('span');
n2.className = 'pitch-accent-character-inner';
n2.textContent = mora;
n1.appendChild(n2);
if (devoice) {
n1.dataset.devoice = 'true';
const n3 = document.createElement('span');
n3.className = 'pitch-accent-character-devoice-indicator';
n1.appendChild(n3);
}
if (nasal) {
n1.dataset.nasal = 'true';
n1.dataset.originalText = mora;
n2.textContent = this._getPlainMora(mora);
let n3 = document.createElement('span');
n3.className = 'pitch-accent-character-nasal-diacritic';
n3.textContent = '\u309a'; // Combining handakuten
n1.appendChild(n3);
n3 = document.createElement('span');
n3.className = 'pitch-accent-character-nasal-indicator';
n1.appendChild(n3);
}
fragment.appendChild(n1);
}
return fragment;
}
createPitchGraph(morae, downstepPosition) {
const jp = this._japaneseUtil;
const ii = morae.length;
const svgns = 'http://www.w3.org/2000/svg';
const svg = document.createElementNS(svgns, 'svg');
svg.setAttribute('xmlns', svgns);
svg.setAttribute('class', 'pitch-accent-graph');
svg.setAttribute('focusable', 'false');
svg.setAttribute('viewBox', `0 0 ${50 * (ii + 1)} 100`);
if (ii <= 0) { return svg; }
const path1 = document.createElementNS(svgns, 'path');
svg.appendChild(path1);
const path2 = document.createElementNS(svgns, 'path');
svg.appendChild(path2);
const pathPoints = [];
for (let i = 0; i < ii; ++i) {
const highPitch = jp.isMoraPitchHigh(i, downstepPosition);
const highPitchNext = jp.isMoraPitchHigh(i + 1, downstepPosition);
const x = i * 50 + 25;
const y = highPitch ? 25 : 75;
if (highPitch && !highPitchNext) {
this._addGraphDotDownstep(svg, svgns, x, y);
} else {
this._addGraphDot(svg, svgns, x, y);
}
pathPoints.push(`${x} ${y}`);
}
path1.setAttribute('class', 'pitch-accent-graph-line');
path1.setAttribute('d', `M${pathPoints.join(' L')}`);
pathPoints.splice(0, ii - 1);
{
const highPitch = jp.isMoraPitchHigh(ii, downstepPosition);
const x = ii * 50 + 25;
const y = highPitch ? 25 : 75;
this._addGraphTriangle(svg, svgns, x, y);
pathPoints.push(`${x} ${y}`);
}
path2.setAttribute('class', 'pitch-accent-graph-line-tail');
path2.setAttribute('d', `M${pathPoints.join(' L')}`);
return svg;
}
// Private
_addGraphDot(container, svgns, x, y) {
container.appendChild(this._createGraphCircle(svgns, 'pitch-accent-graph-dot', x, y, '15'));
}
_addGraphDotDownstep(container, svgns, x, y) {
container.appendChild(this._createGraphCircle(svgns, 'pitch-accent-graph-dot-downstep1', x, y, '15'));
container.appendChild(this._createGraphCircle(svgns, 'pitch-accent-graph-dot-downstep2', x, y, '5'));
}
_addGraphTriangle(container, svgns, x, y) {
const node = document.createElementNS(svgns, 'path');
node.setAttribute('class', 'pitch-accent-graph-triangle');
node.setAttribute('d', 'M0 13 L15 -13 L-15 -13 Z');
node.setAttribute('transform', `translate(${x},${y})`);
container.appendChild(node);
}
_createGraphCircle(svgns, className, x, y, radius) {
const node = document.createElementNS(svgns, 'circle');
node.setAttribute('class', className);
node.setAttribute('cx', `${x}`);
node.setAttribute('cy', `${y}`);
node.setAttribute('r', radius);
return node;
}
_getPlainMora(mora) {
const first = mora[0];
const info = this._japaneseUtil.getKanaDiacriticInfo(first);
if (info === null) { return mora; }
return `${info.character}${mora.substring(1)}`;
}
}
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