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bbox.js

bbox.js 3.2 KB
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  1. /* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
    2. 

  2. /* vim: set ts=2 et sw=2 tw=80: */
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  3. 

  4. /*************************************************************
    5. 

  5.  *
    6. 

  6.  *  MathJax/extensions/TeX/bbox.js
    7. 

  7.  *  
    8. 

  8.  *  This file implements the \bbox macro, which creates an box that
    9. 

  9.  *  can be styled (for background colors, and so on).  You can include
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  10.  *  an optional dimension that tells how much extra padding to include
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  11.  *  around the bounding box for the mathematics, or a color specification 
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  12.  *  for the background color to use, or both.  E.g.,
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  13.  *  
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  14.  *    \bbox[2pt]{x+y}        %  an invisible box around x+y with 2pt of extra space
    15. 

  15.  *    \bbox[green]{x+y}      %  a green box around x+y
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  16.  *    \bbox[green,2pt]{x+y}  %  a green box with 2pt of extra space
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  17.  *
    18. 

  18.  *  You can also specify style attributes, for example
    19. 

  19.  *  
    20. 

  20.  *    \bbox[red,border:3px solid blue,5px]{x+y}
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  21.  *  
    22. 

  22.  *  would give a red background with a 3px solid blue border that has 5px
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  23.  *  of padding between the border and the mathematics.  Note that not all
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  24.  *  output formats support the style specifications.  In particular, the
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  25.  *  NativeMML output depends on the browser to render the attributes, and
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  26.  *  not all MathML renderers will honor them (e.g., MathPlayer2 doesn't
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  27.  *  render border styles).
    28. 

  28.  *  
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  29.  *  This file will be loaded automatically when \bbox is first used.
    30. 

  30.  *
    31. 

  31.  *  ---------------------------------------------------------------------
    32. 

  32.  *  
    33. 

  33.  *  Copyright (c) 2011-2013 The MathJax Consortium
    34. 

  34.  * 
    35. 

  35.  *  Licensed under the Apache License, Version 2.0 (the "License");
    36. 

  36.  *  you may not use this file except in compliance with the License.
    37. 

  37.  *  You may obtain a copy of the License at
    38. 

  38.  * 
    39. 

  39.  *      http://www.apache.org/licenses/LICENSE-2.0
    40. 

  40.  * 
    41. 

  41.  *  Unless required by applicable law or agreed to in writing, software
    42. 

  42.  *  distributed under the License is distributed on an "AS IS" BASIS,
    43. 

  43.  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    44. 

  44.  *  See the License for the specific language governing permissions and
    45. 

  45.  *  limitations under the License.
    46. 

  46.  */MathJax.Extension["TeX/bbox"]={version:"2.2"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var d=MathJax.InputJax.TeX,l=MathJax.ElementJax.mml;d.Definitions.Add({macros:{bbox:"BBox"}},null,!0);d.Parse.Augment({BBox:function(b){var g=this.GetBrackets(b,""),e=this.ParseArg(b),g=g.split(/,/),a,h,k,m;for(m in g){var c=g[m].replace(/^\s+/,"").replace(/\s+$/,""),f=c.match(/^(\.\d+|\d+(\.\d*)?)(pt|em|ex|mu|px|in|cm|mm)$/);f?(a&&d.Error(["MultipleBBoxProperty","%1 specified twice in %2","Padding",b]),a=f[1]+f[3],a={height:"+"+a,depth:"+"+a,lspace:a,width:"+"+2*f[1]+f[3]}):c.match(/^([a-z0-9]+|\#[0-9a-f]{6}|\#[0-9a-f]{3})$/i)?(h&&d.Error(["MultipleBBoxProperty","%1 specified twice in %2","Background",b]),h=c):c.match(/^[-a-z]+:/i)?(k&&d.Error(["MultipleBBoxProperty","%1 specified twice in %2","Style",b]),k=this.BBoxStyle(c)):""!==c&&d.Error(["InvalidBBoxProperty","'%1' doesn't look like a color, a padding dimension, or a style",c])}a&&(e=l.mpadded(e).With(a));if(h||k)e=l.mstyle(e).With({mathbackground:h,style:k});this.Push(e)},BBoxStyle:function(b){return b}});MathJax.Hub.Startup.signal.Post("TeX bbox Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/bbox.js");
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