site/node_modules/mathjax-full/ts/output/chtml/Wrappers/mrow.ts

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/*************************************************************
*
* Copyright (c) 2017-2022 The MathJax Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Implements the CHTMLmrow wrapper for the MmlMrow object
*
* @author dpvc@mathjax.org (Davide Cervone)
*/
import {CHTMLWrapper, CHTMLConstructor, Constructor} from '../Wrapper.js';
import {CommonMrowMixin} from '../../common/Wrappers/mrow.js';
import {CommonInferredMrowMixin} from '../../common/Wrappers/mrow.js';
import {MmlMrow, MmlInferredMrow} from '../../../core/MmlTree/MmlNodes/mrow.js';
/*****************************************************************/
/**
* The CHTMLmrow wrapper for the MmlMrow object
*
* @template N The HTMLElement node class
* @template T The Text node class
* @template D The Document class
*/
// @ts-ignore
export class CHTMLmrow<N, T, D> extends
CommonMrowMixin<CHTMLConstructor<any, any, any>>(CHTMLWrapper) {
/**
* The mrow wrapper
*/
public static kind = MmlMrow.prototype.kind;
/**
* @override
*/
public toCHTML(parent: N) {
const chtml = (this.node.isInferred ? (this.chtml = parent) : this.standardCHTMLnode(parent));
let hasNegative = false;
for (const child of this.childNodes) {
child.toCHTML(chtml);
if (child.bbox.w < 0) {
hasNegative = true;
}
}
// FIXME: handle line breaks
if (hasNegative) {
const {w} = this.getBBox();
if (w) {
this.adaptor.setStyle(chtml, 'width', this.em(Math.max(0, w)));
if (w < 0) {
this.adaptor.setStyle(chtml, 'marginRight', this.em(w));
}
}
}
}
}
/*****************************************************************/
/**
* The CHTMLinferredMrow wrapper for the MmlInferredMrow object
*
* @template N The HTMLElement node class
* @template T The Text node class
* @template D The Document class
*/
// @ts-ignore
export class CHTMLinferredMrow<N, T, D> extends
CommonInferredMrowMixin<Constructor<CHTMLmrow<any, any, any>>>(CHTMLmrow) {
/**
* The inferred-mrow wrapper
*/
public static kind = MmlInferredMrow.prototype.kind;
}