4 * Part of the jsMath package for mathematics on the web.
6 * This file makes jsMath more compatible with the mimeTeX program.
7 * It does not make everything work, but it goes a long way.
9 * ---------------------------------------------------------------------
11 * Copyright 2004-2006 by Davide P. Cervone
13 * Licensed under the Apache License, Version 2.0 (the "License");
14 * you may not use this file except in compliance with the License.
15 * You may obtain a copy of the License at
17 * http://www.apache.org/licenses/LICENSE-2.0
19 * Unless required by applicable law or agreed to in writing, software
20 * distributed under the License is distributed on an "AS IS" BASIS,
21 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 * See the License for the specific language governing permissions and
23 * limitations under the License.
30 jsMath.Parser.prototype.nextIsSpace = function () {
31 return this.string.charAt(this.i) == ' ' ||
32 this.string.charAt(this.i) == '~';
34 jsMath.Parser.prototype.special['~'] = 'Space';
37 * Implement \[ ... \], \( ... \), etc.
39 jsMath.Macro('[','\\left['); jsMath.Macro(']','\\right]');
40 jsMath.Macro('(','\\left('); jsMath.Macro(')','\\right)');
41 jsMath.Macro('<','\\left<'); jsMath.Macro('>','\\right>');
42 // can't do \. in a reasonable way
43 jsMath.Parser.prototype.macros['|'] = ['HandleLR','|','|'];
44 jsMath.Parser.prototype.macros['='] = ['HandleLR','\\|','\\|'];
47 * Make non-standard \left{ and \right} work
49 jsMath.Parser.prototype.delimiter['}'] = [5,2,0x67,3,0x09];
50 jsMath.Parser.prototype.delimiter['{'] = [4,2,0x66,3,0x08];
54 * Immitate mimeTeX \big... and \Big... ops
57 // make the normal ones in text mode
58 jsMath.Macro('int','\\intop\\nolimits');
59 jsMath.Macro('oint','\\ointop\\nolimits');
60 jsMath.Macro('sum','\\sumop\\nolimits');
61 jsMath.Macro('prod','\\prodop\\nolimits');
62 jsMath.Macro('coprod','\\coprodop\\nolimits');
64 jsMath.Macro('bigint','\\bigintop\\nolimits');
65 jsMath.Macro('bigoint','\\bigointop\\nolimits');
66 jsMath.Macro('bigsum','\\bigsumop\\nolimits');
67 jsMath.Macro('bigprod','\\bigprodop\\nolimits');
68 jsMath.Macro('bigcoprod','\\bigcoprodop\\nolimits');
70 jsMath.Macro('Bigint','\\bigintop\\limits');
71 jsMath.Macro('Bigoint','\\bigointop\\limits');
72 jsMath.Macro('Bigsum','\\bigsumop\\limits');
73 jsMath.Macro('Bigprod','\\bigprodop\\limits');
74 jsMath.Macro('Bigcoprod','\\bigcoprod\\limits');
77 * The characters needed for the macros above
79 jsMath.Parser.prototype.mathchardef['coprodop'] = [1,3,0x60];
80 jsMath.Parser.prototype.mathchardef['prodop'] = [1,3,0x51];
81 jsMath.Parser.prototype.mathchardef['sumop'] = [1,3,0x50];
83 jsMath.Parser.prototype.mathchardef['bigintop'] = [1,3,0x5A];
84 jsMath.Parser.prototype.mathchardef['bigointop'] = [1,3,0x49];
85 jsMath.Parser.prototype.mathchardef['bigcoprodop'] = [1,3,0x61];
86 jsMath.Parser.prototype.mathchardef['bigprodop'] = [1,3,0x59];
87 jsMath.Parser.prototype.mathchardef['bigsumop'] = [1,3,0x58];
90 * Unlink the small versions so they don't enlarge in display mode
92 jsMath.TeX['cmex10'][0x48].n = null;
93 jsMath.TeX['cmex10'][0x50].n = null;
94 jsMath.TeX['cmex10'][0x51].n = null;
95 jsMath.TeX['cmex10'][0x52].n = null;
96 jsMath.TeX['cmex10'][0x60].n = null;
100 * Some other missing items
102 jsMath.Macro('/','{}'); // insert an empty box \/
103 jsMath.Macro('raisebox','\\raise #1px ',1); // convert to \raise
104 jsMath.Macro('hfill','\\quad ',1); // punt
105 jsMath.Macro('fbox','\\oldfbox{$#1$}',1); // do fbox in math mode
108 * These get new JavaScript routines
110 jsMath.Parser.prototype.macros['unitlength'] = 'unitlength';
111 jsMath.Parser.prototype.macros['hspace'] = 'hspace';
112 jsMath.Parser.prototype.macros['fs'] = 'fs';
113 jsMath.Parser.prototype.macros['oldfbox'] = 'FBox';
116 * Add some JavaScript functions to the parser
118 jsMath.Package(jsMath.Parser,{
121 * Implement \left x ... \right x
123 HandleLR: function (name,data) {
124 var arg = this.GetUpto(name,name); if (this.error) return;
125 this.string = '\\left'+data[0]+arg+'\\right'+data[1];
130 * Hold the unit length in mlist.data
132 unitlength: function (name) {
133 var n = this.GetArgument(this.cmd+name); if (this.error) return;
134 if (!n.match(/^-?(\d+(\.\d*)?|\.\d+)$/)) {
135 this.Error("Argument for "+this.cmd+name+" must be a number");
138 this.mlist.data['unitlength'] = n;
142 * Get the length (converted to ems) and multiply by the unit length
144 hspace: function (name) {
145 var w = this.GetArgument(this.cmd+name); if (this.error) return;
146 if (!w.match(/^-?(\d+(\.\d*)?|\.\d+)$/)) {
147 this.Error("Argument for "+this.cmd+name+" must be a number");
151 if (this.mlist.data['unitlength']) {w *= this.mlist.data['unitlength']}
152 this.mlist.Add(jsMath.mItem.Space(w));
156 * Implement \fs{...} for font-size changing
158 fs: function (name) {
159 var n = this.GetArgument(this.cmd+name); if (this.error) return;
160 if (!n.match(/^[-+]?\d+$/)) {
161 this.Error("Argument for "+this.cmd+name+" must be an integer");
164 if (n.match(/[-+]/)) {n = n - 0; n += this.mlist.data.size}
165 this.mlist.data.size = n = Math.max(0,Math.min(9,n));
166 this.mlist.Add(new jsMath.mItem('size',{size: n}));
170 * Repalce the Array function by one that accepts an optional
171 * parameter for the column types, and that handle's mimeTeX's
174 Array: function (name,delim) {
175 var columns = delim[2]; var cspacing = delim[3];
176 if (!columns && this.GetNext() == '{') {
177 columns = this.GetArgument(this.cmd+'begin{'+name+'}');
178 if (this.error) return;
182 columns = columns.replace(/[^clr]/g,'');
183 columns = columns.split('');
184 var data = this.mlist.data; var style = delim[5] || 'T';
185 var arg = this.GetEnd(name); if (this.error) return;
186 if (arg.match(/\$/)) {arg = arg.replace(/^([^$]*)\$/,''); columns = RegExp.$1}
187 var parse = new jsMath.Parser(arg+this.cmd+'\\',null,data.size,style);
188 parse.matrix = name; parse.row = []; parse.table = []; parse.rspacing = [];
189 parse.Parse(); if (parse.error) {this.Error(parse); return}
190 parse.HandleRow(name,1); // be sure the last row is recorded
191 var box = jsMath.Box.Layout(data.size,parse.table,columns,cspacing,parse.rspacing,delim[4]||null);
192 // Add parentheses, if needed
193 if (delim[0] && delim[1]) {
194 var left = jsMath.Box.Delimiter(box.h+box.d-jsMath.hd/4,this.delimiter[delim[0]],'T');
195 var right = jsMath.Box.Delimiter(box.h+box.d-jsMath.hd/4,this.delimiter[delim[1]],'T');
196 box = jsMath.Box.SetList([left,box,right],data.style,data.size);
198 this.mlist.Add(jsMath.mItem.Atom((delim[0]? 'inner': 'ord'),box));
202 * Similarly for Matrix (used by \matrix and \array)
204 Matrix: function (name,delim) {
205 var data = this.mlist.data;
206 var arg = this.GetArgument(this.cmd+name); if (this.error) return;
207 if (arg.match(/\$/)) {arg = arg.replace(/^([^$]*)\$/,''); delim[2] = RegExp.$1}
208 var parse = new jsMath.Parser(arg+this.cmd+'\\',null,data.size,delim[5] || 'T');
209 parse.matrix = name; parse.row = []; parse.table = []; parse.rspacing = [];
210 parse.Parse(); if (parse.error) {this.Error(parse); return}
211 parse.HandleRow(name,1); // be sure the last row is recorded
212 var box = jsMath.Box.Layout(data.size,parse.table,delim[2]||null,delim[3]||null,parse.rspacing,delim[4]||null);
213 // Add parentheses, if needed
214 if (delim[0] && delim[1]) {
215 var left = jsMath.Box.Delimiter(box.h+box.d-jsMath.hd/4,this.delimiter[delim[0]],'T');
216 var right = jsMath.Box.Delimiter(box.h+box.d-jsMath.hd/4,this.delimiter[delim[1]],'T');
217 box = jsMath.Box.SetList([left,box,right],data.style,data.size);
219 this.mlist.Add(jsMath.mItem.Atom((delim[0]? 'inner': 'ord'),box));