88 lines
3.1 KiB
TypeScript
88 lines
3.1 KiB
TypeScript
/*************************************************************
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*
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* Copyright (c) 2018-2022 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 Configuration file for the cancel package.
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*
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* @author v.sorge@mathjax.org (Volker Sorge)
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*/
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import {Configuration} from '../Configuration.js';
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import TexParser from '../TexParser.js';
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import {TexConstant} from '../TexConstants.js';
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import {CommandMap} from '../SymbolMap.js';
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import {ParseMethod} from '../Types.js';
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import ParseUtil from '../ParseUtil.js';
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import {ENCLOSE_OPTIONS} from '../enclose/EncloseConfiguration.js';
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// Namespace
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export let CancelMethods: Record<string, ParseMethod> = {};
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/**
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* Parse function for cancel macros of the form \(b|x)?cancel[attributes]{math}
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* @param {TexParser} parser The current tex parser.
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* @param {string} name The name of the calling macro.
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* @param {string} notation The type of cancel notation to use.
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*/
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CancelMethods.Cancel = function(parser: TexParser, name: string, notation: string) {
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const attr = parser.GetBrackets(name, '');
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const math = parser.ParseArg(name);
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const def = ParseUtil.keyvalOptions(attr, ENCLOSE_OPTIONS);
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def['notation'] = notation;
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parser.Push(parser.create('node', 'menclose', [math], def));
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};
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/**
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* Parse function implementing \cancelto{value}[attributes]{math}
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* @param {TexParser} parser The current tex parser.
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* @param {string} name The name of the calling macro.
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*/
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CancelMethods.CancelTo = function(parser: TexParser, name: string) {
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const attr = parser.GetBrackets(name, '');
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let value = parser.ParseArg(name);
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const math = parser.ParseArg(name);
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const def = ParseUtil.keyvalOptions(attr, ENCLOSE_OPTIONS);
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def ['notation'] = [TexConstant.Notation.UPDIAGONALSTRIKE,
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TexConstant.Notation.UPDIAGONALARROW,
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TexConstant.Notation.NORTHEASTARROW].join(' ');
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value = parser.create('node', 'mpadded', [value],
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{depth: '-.1em', height: '+.1em', voffset: '.1em'});
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parser.Push(parser.create('node', 'msup',
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[parser.create('node', 'menclose', [math], def), value]));
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};
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new CommandMap('cancel', {
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cancel: ['Cancel', TexConstant.Notation.UPDIAGONALSTRIKE],
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bcancel: ['Cancel', TexConstant.Notation.DOWNDIAGONALSTRIKE],
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xcancel: ['Cancel', TexConstant.Notation.UPDIAGONALSTRIKE + ' ' +
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TexConstant.Notation.DOWNDIAGONALSTRIKE],
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cancelto: 'CancelTo'
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}, CancelMethods);
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export const CancelConfiguration = Configuration.create(
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'cancel', {handler: {macro: ['cancel']}}
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);
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