W3C home > Mailing lists > Public > www-svg@w3.org > December 2001

Re: svg degrades to gif/jpg

From: Robert Diblasi <rdiblas@wpo.it.luc.edu>
Date: Thu, 20 Dec 2001 11:03:48 -0600
Message-Id: <sc21c594.044@wpo.it.luc.edu>
To: <lucy-ples@mtu-net.ru>, <mimasa@w3.org>, <w3c-wai-ig@w3.org>
Cc: <www-svg@w3.org>
Mr. Vadim Plessky,

I respect your comments....I take it you  are a native Russian speaker...this is my assumption.

I would like to show you the address to SVG 1.0 W3C:
http://www.w3.org/TR/SVG/ 

1 Introduction 
2 Concepts 
3 Rendering Model 
4 Basic Data Types and Interfaces 
5 Document Structure 
6 Styling 
7 Coordinate Systems, Transformations and Units 
8 Paths 
9 Basic Shapes 
10 Text 
11 Painting: Filling, Stroking and Marker Symbols 
12 Color 
13 Gradients and Patterns 
14 Clipping, Masking and Compositing 
15 Filter Effects 
16 Interactivity 
17 Linking 
18 Scripting 
19 Animation 
20 Fonts 
21 Metadata 
22 Backwards Compatibility 
23 Extensibility 
Appendix A: DTD 
Appendix B: SVG Document Object Model (DOM) 
Appendix C: IDL Definitions 
Appendix D: Java Language Binding 
Appendix E: ECMAScript Language Binding 
Appendix F: Implementation Requirements 
Appendix G: Conformance Criteria 
Appendix H: Accessibility Support 
Appendix I: Internationalization Support 
Appendix J: Minimizing SVG File Sizes 
Appendix K: References 
Appendix L: Element Index 
Appendix M: Attribute Index 
Appendix N: Property Index 
Appendix O: Index 

I think this should help you 

Thank you for your comments

We all learn by sharing what we know
Robert A. DiBlasi
www.svgnotebook.com



please read:
http://www.w3.org/TR/SVG/intro.html#MIMEType 


>>> Vadim Plessky <lucy-ples@mtu-net.ru> 12/20/01 09:11AM >>>
On Wednesday 19 December 2001 08:30, Masayasu Ishikawa wrote:
|   Charles McCathieNevile <charles@w3.org> wrote:
|   > I forget which draft the type was changed in, but I believe that it is
|   > using the +xml in order to allow recognition of xml data in various
|   > non-text MIME types.
|
|   The history was that "image/svg" had been used until WD-SVG-19991203 [2],
|   then it was changed to "image/svg-xml" in WD-SVG-20000303 [3] and was
|   changed again to "image/svg+xml" in CR-SVG-20001102 [4].
|
|   [2]http://www.w3.org/TR/1999/WD-SVG-19991203/intro.html#MIMEType 
|   [3] http://www.w3.org/TR/2000/03/WD-SVG-20000303/intro.html#MIMEType 
|   [4] http://www.w3.org/TR/2000/CR-SVG-20001102/intro.html#MIMEType 
|

Dear Ishikawa-san,

Thanks a lot for clarification.
It's a pity that correct (according to [4]) mimetype for SVG is not listed in 
HTML4 specification. (I was making my assumption basing on HTML4 
specification) 
Obviously, SVG was somewhat ignored in this W3C recommendation:
http://www.w3.org/TR/1999/REC-html401-19991224 
~ ~ ~
6.7 Content types (MIME types)

Note. A "media type" (defined in [RFC2045] and [RFC2046]) specifies the 
nature of a linked resource. This specification employs the term "content 
type" rather than "media type" in accordance with current usage. Furthermore, 
in this specification, "media type" may refer to the media where a user agent 
renders a document.

This type is represented in the DTD by  %ContentType;.

Content types are case-insensitive.

Examples of content types include "text/html", "image/png", "image/gif", 
"video/mpeg", "text/css", and "audio/basic". For the current list of 
registered MIME types, please consult [MIMETYPES].

 [MIMETYPES]
List of registered content types (MIME types). Download a list of registered 
content types from ftp://ftp.isi.edu/in-notes/iana/assignments/media-types/.
~ ~ ~

Now I just wonder how many web masters in fact downloaded [MIMETYPES] from 
the URL above, and wether latest changes you have menetioned were reflected 
in that document.
Still I do not understand (and guess that many other people will not 
understand) why you have "image/png", "image/gif" but "image/svg+xml"
I personally find this quite confusing, and making transition from IMG to 
OBJECT tag rather difficult for people not reading *all* standards available 
on Internet (and this is just not possible to follow *all published 
standards*) 

I am cc'ing www-SVG list with hope that reasons for such practice can be 
clarified, and may be added somewehre as FAQ.

-- 

Vadim Plessky
http://kde2.newmail.ru  (English)
33 Window Decorations and 6 Widget Styles for KDE
http://kde2.newmail.ru/kde_themes.html 
KDE mini-Themes
http://kde2.newmail.ru/themes/ 
Received on Thursday, 20 December 2001 12:03:59 GMT

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