Charles Iliya Krempeaux wrote:
Hello Stefan,
You'll probably need alot of info, about the font, to be able to
really handle fonts properly.
It's been a while since I've really written that kind of code.
But just consider the concept of "kerning". Any API would need to
expose that kind of info too.
Hi Charles,
that's why I have included Font.stringWidth() in the list of Font
methods (and not charWidth())....
The proposed methods should be sufficient for basic needs, in particular
to cope with scaling issues and to implement a word wrap algorithm.
Best regards,
Stefan
See ya
On 10/17/06, *Stefan Haustein* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Hi,
I would like to second the drawString() request.
It makes sense to have a simple API, but it should be balanced with
application simplicity and readability to some extent. Doing CSS black
magic to overlay text and a Canvas object just seems inadequate for
something like axis labeling.
As noted earlier by somebody else (did not find the mail...), we would
also need a simple Font object, but the minimum requirements seem
rather
simple:
Font Canvas.createFont (String cssFontProperties);
Canvas.setFont(Font font) // set current font
Canvas.drawString(int x, int y, String text);
Font Canvas.getFont() // current font
int Font.stringWidth(String s);
int Font.getHeight (); // includes leading
int Font.getBaselinePosition();
int Font.getAscent();
int Font.getDescent();
Best regards
Stefan Haustein
Alfonso Baqueiro wrote:
> Hello Charles,
>
> 2006/10/17, Charles Iliya Krempeaux <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>>:
>
> Hello Alfonso,
>
> On 10/17/06, *Alfonso Baqueiro* < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>>
wrote:
>
> The canvas component is very promising, but the lack of
> drawString method could be a great error for its
success, this
> lack is a huge limitation, how could you resolve this
problem?
>
>
> I believe that some people's reason for not wanting to add
it was
> because of Accessibility concerns.
>
> Although normal text in a webpage... or even a text image (with
> the "alt" attribute filled in properly) could be "read" by a
> person with disabilities, text embedded in the canvas element
> could not.
>
> Perhaps people need to think about how to add Accessibility
to the
> canvas while allowing a "drawString" procedure.
>
>
> Well a drawString method in canvas can be used for drawing the axis
> labels or values on a dinamic javascript graphic, but is non
sense an
> aural reader read it, theres no way (yet) to read an image to a
> blinded people, there are cases where is imposible the
accessibility,
> is imposible for a blind to play video games, and accessibility
dont
> stop the video games creation. In the case of images or the
canvas the
> alt attribute could do the job.
>
> See ya
>
--
Charles Iliya Krempeaux, B.Sc.
charles @ reptile.ca <http://reptile.ca>
supercanadian @ gmail.com <http://gmail.com>
developer weblog: http://ChangeLog.ca/
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