Philippe Nobili wrote: > > We know about these options, they are very convenient indeed. But, when > we author DocBook-4 documents referencing MathML formulas (e.g. > <imagedata fileref="myequation.mml"/>), it does not help much: the font > size changes for the document itself, but not for the formula. So the > document font size is really big and the equation is really small... > > When we author MathML files separatly it works as you describe and we > use it indeed. > > Maybe we missed something ?
--> If you click on a MathML equation in a DocBook *5* document, you can edit it in place quite normally. DocBook 5 natively supports MathML embedding and therefore XXE allows you to edit MathML elements as any other DocBook 5 element. In this case Ctrl-Mouse-Wheel works fine (but may be slow). --> If you click on a MathML equation in a DocBook *4* document, you cannot edit it in place. Unlike DocBook 5, DocBook 4 does not natively support MathML embedding. With DocBook 4, MathML is treated like SVG graphics. That is, you have to use an *imagedata* element which points to an external .mml file. Needless to say that Ctrl-Mouse-Wheel has no effect on images. --> In the case of DocBook 4, XXE uses JEuclid to render the external .mml files as images, not only when the document is converted to formats such as HTML and PDF, but also for screen rendering purposes. I've explained in my previous email how to make JEuclid use a larger base font size. However this mainly applies to the case where JEuclid is used to convert MathML files to formats such as HTML and PDF. When JEuclid is used for screen rendering purposes (like with DocBook 4), there is currently no way to configure anything. The only way to improve the situation is what follows: --- More simply, upgrade to v4.5.1 + JEuclid add-on v3.1.8_01. The add-on has been modified to increase the base math size (MATHSIZE parameter) from 12pt to 16pt. ---
