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-jsMath 3.2

    1: /*
    2:  *  extensions/fbox.js
    3:  *  
    4:  *  Part of the jsMath package for mathematics on the web.
    5:  *
    6:  *  This file implements the \fbox macro.  It will be loaded
    7:  *  automatically when needed, or can be loaded by
    8:  *  
    9:  *    jsMath.Extension.Require('fbox');
   10:  *
   11:  *  ---------------------------------------------------------------------
   12:  *
   13:  *  Copyright 2005-2006 by Davide P. Cervone
   14:  * 
   15:  *  Licensed under the Apache License, Version 2.0 (the "License");
   16:  *  you may not use this file except in compliance with the License.
   17:  *  You may obtain a copy of the License at
   18:  * 
   19:  *      http://www.apache.org/licenses/LICENSE-2.0
   20:  * 
   21:  *  Unless required by applicable law or agreed to in writing, software
   22:  *  distributed under the License is distributed on an "AS IS" BASIS,
   23:  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   24:  *  See the License for the specific language governing permissions and
   25:  *  limitations under the License.
   26:  */
   27: 
   28: /********************************************************************/
   29: 
   30: jsMath.Add(jsMath.HTML,{
   31: 
   32:   /*
   33:    *  Create a colored frame
   34:    */
   35:   Frame: function (x,y,w,h,c,pos) {
   36: 
   37:     h -= 2/jsMath.em; // use 2 pixels to compensate for border size
   38:     w -= 2/jsMath.em;
   39:     y -= 1/jsMath.em;
   40:     if (!c) {c = 'black'};
   41:     if (pos) {pos = 'absolute;'} else
   42:              {pos = 'relative; margin-right: '+this.Em(-(w+2/jsMath.em))+'; '}
   43:     return '<img src="'+jsMath.blank+'" style="position:' + pos
   44:              + 'vertical-align: '+this.Em(y)+'; left: '+this.Em(x)+'; '
   45:              + 'width:' +this.Em(w*jsMath.Browser.imgScale)+'; '
   46:              + 'height:'+this.Em(h*jsMath.Browser.imgScale)+'; '
   47:              + 'border: 1px solid '+c+';" />';
   48:   }
   49: 
   50: });
   51: 
   52: jsMath.Package(jsMath.Parser,{
   53:   
   54:   macros: {fbox: 'FBox'},
   55:   
   56:   /*
   57:    *  Implement \fbox{...}
   58:    */
   59:   FBox: function (name) {
   60:     var text = this.GetArgument(this.cmd+name); if (this.error) return;
   61:     var arg = jsMath.Box.InternalMath(text,this.mlist.data.size);
   62:     var f = 0.25 * jsMath.sizes[this.mlist.data.size]/100;
   63:     var box = jsMath.Box.Set(arg,this.mlist.data.style,this.mlist.data.size,1).Remeasured();
   64:     var frame = jsMath.HTML.Frame(-f,-box.d-f,box.w+2*f,box.h+box.d+2*f);
   65:     box.html = frame + box.html + jsMath.HTML.Spacer(f);
   66:     box.h += f; box.d += f; box.w +=2*f; box.x += f;
   67:     box.bh = Math.max(box.bh,box.h); box.bd = Math.max(box.bd,box.d);
   68:     this.mlist.Add(jsMath.mItem.Atom('ord',box));
   69:   }
   70:   
   71: });