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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';
+
+ const n2 = document.createElement('span');
+ n2.className = 'pitch-accent-character-inner';
+
+ n1.appendChild(n2);
+
+ n1.dataset.position = `${i}`;
+ n1.dataset.pitch = highPitch ? 'high' : 'low';
+ n1.dataset.pitchNext = highPitchNext ? 'high' : 'low';
+ n2.textContent = mora;
+
+ 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';
+ const 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;
+ }
+}