Re: [cgmo-webcgm] DOM questions and implementation feedback

[Benoit Bezaire <benoit@itedo.com>]

Hi all,

Just a friendly reminder to point out that we have questions to
resolve.  Let me add another one:

4) What happens if a user changes the raster-intensity of a
black & white image?  Does an implementation have to convert the black
& white image to grayscale before changing the intensity?  Or is this
functionality only intended for grayscale and color images and
therefore has no effect on black & white images?

Thanks!

-- 
 Benoit   mailto:benoit@itedo.com

 
Tuesday, August 17, 2004, 1:33:07 PM, Benoit wrote:

BB> Hi all,

BB>   First the questions...

BB>   1) Are APS style attributes cumulative or not?  Example:
BB>   - assume we have a rectangle filled with black.
BB>   - we set it to red by calling setStyleAttr( "fill-color", "#FF0000" );
BB>   - we then set it to a relative color using setStyleAttr(
BB>   "fill-color", "50%" );

BB>     What is the resulting color?  50% red or 50% black?  I believe the
BB>     spec needs to be clear on this, wording will have to be
BB>     added.

BB>   2) Is the style attribute "fill-color" suppose to fill objects that
BB>   don't already have a fill-color?   If yes, what does WebCGM say
BB>   about filling non-closed objects?  calling setStyleAttr(
BB>   "fill-color", "50%" ) on a non-filled object should do what?

BB>   3) Since WebCGM only allows for restricted text elements, what is
BB>   the usefulness of changing the font-size? ie, it can't exceed the
BB>   box height?!


BB>   On to implementation feedback...

BB>   i) As I've said in the last conference call, the metafileDescription
BB>   attribute on the Picture interface doesn't make much sense to me.  I
BB>   think it is really hard for a script writer to use the returned
BB>   value.

BB>   I would like to propose that we change the Metafile interface to:
BB>   interface Metafile {
BB>     readonly attribute Picture         firstPicture;
BB>     readonly attribute DOMString       metafileID;
BB>     readonly attribute DOMString       ProfileId;
BB>     readonly attribute DOMString       ProfileEd;
BB>     readonly attribute usigned short   metafileVersion;
BB>              attribute DOMString       src;
BB>   };
BB>   OR
BB>   interface Metafile {
BB>     readonly attribute DOMString       metafileDescription; // returns clearText value
BB>     readonly attribute Picture         firstPicture;
BB>     readonly attribute DOMString       metafileID;
BB>     readonly attribute DOMString       ProfileId;
BB>     readonly attribute DOMString       ProfileEd;
BB>     readonly attribute usigned short   metafileVersion;
BB>              attribute DOMString       src;
BB>   };
BB>   feedback would be appreciated.

BB>   ii) We have some methods in the WebCGM DOM that take DOMStringList
BB>   as input parameters but we have no methods for creating a DOMStringList
BB>   object or to append/remove DOMStrings from DOMStringList objects.
BB>   The DOMStringList interface will need to be modified.  And we will
BB>   also have to find an interface to add a createDOMStringList()
BB>   method.

BB>   I haven't heard from the group in a few days regarding the
BB>   ecmascript binding request; should I assume that people have started
BB>   implementing without it or is this still an open issue?

BB>   Regards,