65 lines
2.1 KiB
TypeScript
65 lines
2.1 KiB
TypeScript
/*************************************************************
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*
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* Copyright (c) 2017-2022 The MathJax Consortium
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @fileoverview Implements the CHTMLTeXAtom wrapper for the MmlTeXAtom object
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*
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* @author dpvc@mathjax.org (Davide Cervone)
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*/
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import {CHTMLWrapper, CHTMLConstructor} from '../Wrapper.js';
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import {CommonTeXAtomMixin} from '../../common/Wrappers/TeXAtom.js';
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import {TeXAtom} from '../../../core/MmlTree/MmlNodes/TeXAtom.js';
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import {TEXCLASS, TEXCLASSNAMES} from '../../../core/MmlTree/MmlNode.js';
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/*****************************************************************/
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/**
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* The CHTMLTeXAtom wrapper for the TeXAtom object
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*
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* @template N The HTMLElement node class
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* @template T The Text node class
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* @template D The Document class
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*/
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// @ts-ignore
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export class CHTMLTeXAtom<N, T, D> extends
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CommonTeXAtomMixin<CHTMLConstructor<any, any, any>>(CHTMLWrapper) {
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/**
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* The TeXAtom wrapper
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*/
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public static kind = TeXAtom.prototype.kind;
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/**
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* @override
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*/
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public toCHTML(parent: N) {
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super.toCHTML(parent);
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this.adaptor.setAttribute(this.chtml, 'texclass', TEXCLASSNAMES[this.node.texClass]);
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//
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// Center VCENTER atoms vertically
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//
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if (this.node.texClass === TEXCLASS.VCENTER) {
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const bbox = this.childNodes[0].getBBox(); // get unmodified bbox of children
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const {h, d} = bbox;
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const a = this.font.params.axis_height;
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const dh = ((h + d) / 2 + a) - h; // new height minus old height
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this.adaptor.setStyle(this.chtml, 'verticalAlign', this.em(dh));
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}
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}
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}
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