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Annotation of loncom/html/adm/jsMath/plugins/noCache.js, revision 1.1

1.1     ! albertel    1: /*
        !             2:  *  noCache.js
        !             3:  *  
        !             4:  *  Part of the jsMath package for mathematics on the web.
        !             5:  *
        !             6:  *  This file disables the equation cache that jsMath uses to
        !             7:  *  store the typeset versions of TeX code so that common expressions
        !             8:  *  won't need to be re-typeset.
        !             9:  *
        !            10:  *  ---------------------------------------------------------------------
        !            11:  *
        !            12:  *  Copyright 2006 by Davide P. Cervone
        !            13:  * 
        !            14:  *  Licensed under the Apache License, Version 2.0 (the "License");
        !            15:  *  you may not use this file except in compliance with the License.
        !            16:  *  You may obtain a copy of the License at
        !            17:  * 
        !            18:  *      http://www.apache.org/licenses/LICENSE-2.0
        !            19:  * 
        !            20:  *  Unless required by applicable law or agreed to in writing, software
        !            21:  *  distributed under the License is distributed on an "AS IS" BASIS,
        !            22:  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
        !            23:  *  See the License for the specific language governing permissions and
        !            24:  *  limitations under the License.
        !            25:  */
        !            26: 
        !            27: jsMath.Add(jsMath,{
        !            28: 
        !            29:   /*
        !            30:    *  Get the width and height (in ems) of an HTML string
        !            31:    */
        !            32:   EmBoxFor: function (s) {
        !            33:     var bbox = this.BBoxFor(s);
        !            34:     return {w: bbox.w/this.em, h: bbox.h/this.em};
        !            35:   },
        !            36: 
        !            37:   /*
        !            38:    *  For browsers that don't handle sizes of italics properly (MSIE)
        !            39:    */
        !            40:   EmBoxForItalics: function (s) {
        !            41:     var bbox = this.BBoxFor(s);
        !            42:     if (s.match(/<i>|class=\"(icm|italic|igreek|iaccent)/i)) {
        !            43:       bbox.w = this.BBoxFor(s+jsMath.Browser.italicString).w
        !            44:                 - jsMath.Browser.italicCorrection;
        !            45:     }
        !            46:     return {w: bbox.w/this.em, h: bbox.h/this.em};
        !            47:   }
        !            48:   
        !            49: });
        !            50: 
        !            51: jsMath.Add(jsMath.Translate,{
        !            52: 
        !            53:   /*
        !            54:    *  Typeset a string in \textstyle and return the HTML for it
        !            55:    */
        !            56:   TextMode: function (s) {
        !            57:     var parse = jsMath.Parse(s,null,null,'T');
        !            58:     parse.Atomize();
        !            59:     return parse.Typeset();
        !            60:   },
        !            61: 
        !            62:   /*
        !            63:    *  Typeset a string in \displaystyle and return the HTML for it
        !            64:    */
        !            65:   DisplayMode: function (s) {
        !            66:     var parse = jsMath.Parse(s,null,null,'D');
        !            67:     parse.Atomize();
        !            68:     return parse.Typeset();
        !            69:   }
        !            70: 
        !            71: });