From: Bernhard Keil <Bernhard.Keil@soft4science.com>

Date: Wed, 8 Jan 2003 17:33:12 +0100

To: "Robert Miner" <RobertM@dessci.com>, <davidc@nag.co.uk>

Cc: <www-math@w3.org>

Message-ID: <IIEOKCCPKDALHBHODAENKEKFCEAA.Bernhard.Keil@soft4science.com>

Date: Wed, 8 Jan 2003 17:33:12 +0100

To: "Robert Miner" <RobertM@dessci.com>, <davidc@nag.co.uk>

Cc: <www-math@w3.org>

Message-ID: <IIEOKCCPKDALHBHODAENKEKFCEAA.Bernhard.Keil@soft4science.com>

Hi, I do not want to pass CSS style definitions below the <math> root. But I want to set the font-family on the level of a <math>-root with CSS. Enheritance from the parent node above the <math>-root is no solultion for inline math, if you want another font for the math as for the paragraph text. 1.) using standard CSS: math{font-family:MyFont} has no effect in MathPlayer, but works in Mozilla 2.) using CSS class: .matml-inline{font-family:MyFont} does work in MathPlayer, but not in Mozilla 3.) Using the depricated MathML 1.0 attribute "fontfamily" math{fontfamily:MyFont} has no effect in MathPlayer, So the only solution, I found so far, working with MathPlayer AND Mozilla is to define it twice: math {font-family:"Times New Roman",times,CMSY10, CMEX10, Symbol} .mathml-inline{font-family:"Times New Roman",times,CMSY10, CMEX10, Symbol} with a mathml instance: <math class="mathml-inline" >....</math> Bernhard mailto:Bernhard.Keil@soft4science.com ------------------------------------------------------------- soft4science Bernhard Keil Nibelungenstr. 4 80639 Munich Germany +49 89 / 95 411 088 http://www.soft4science.com +49 173 / 72 53 669 http://www.MathML.net -----Original Message----- From: Robert Miner [mailto:RobertM@dessci.com] Sent: Wednesday, January 08, 2003 5:18 PM To: davidc@nag.co.uk; Bernhard.Keil@soft4science.com Cc: www-math@w3.org Subject: Re: Problem with MathPlayer and CSS Hi. MathPlayer reads the CSS environment at the root node of a MathML, and uses that information to initialize the fontsize, fontfamily, fontstyle, fontweight, color, background and displaystyle (in the language of MathML 1). You can set the CSS environment at the root any way you want -- via class or style attribute, through inheritance from a parent element, etc. MathPlayer merely consults the runtime CSS data structure, and uses whatever it sees. MathPlayer does not read the CSS environment at nodes below the <math> node. There is a philosophical decision to be made as to whether one should style MathML via CSS even in an environment that supports it. There is a practical argument and a theoretical one: The practical argument is that Netscape 7/Mozilla and Amaya are currently the only implementation where MathML can be styled via CSS. By contrast, virtually all MathML implementations implement MathML's own "style" machinery. The theoretical argument is that it is dangerous to use CSS to internally style MathML. "Style" directives in equations, such as setting a variable representing a Lie algebra in a fraktur font, are not style information at all, but rather carry semantic meaning. Thus, it is better to encode that directly in MathML. If it is accomplished via CSS, the meaning of an equation can be inadvertently changed as a side-effect from replacing a stylesheet, etc. For these reasons, my own personal view is that equations should only be styled via CSS at the root level, and internally, MathML's own mechanism for controlling display properties should be used. Of course, I realize many will disagree. --Robert ------------------------------------------------------------------ Dr. Robert Miner RobertM@dessci.com MathML 2.0 Specification Co-editor 651-223-2883 Design Science, Inc. "How Science Communicates" www.dessci.com ------------------------------------------------------------------Received on Wednesday, 8 January 2003 11:33:29 UTC

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