Re: [BLACKBOX] underlining spaces

From: [at]} <Josef>
Date: Tue, 17 Mar 2009 17:40:30 +0100

----boundary-LibPST-iamunique-285676151_-_-
Content-type: text/plain

thanks Bernhard, but work arounds don't really help me.

Anyway, I do now understand the technical problem behind this
issue and I think the only way would be to attack it at its core.

And the core problem is this:
Spaces are not drawn at all. They result from placing
words (Strings without Space) at specific coordinates.
Words are drawn by a correponding Windows API function
(ExtTextOutA, ExtTextOutW).
If Space between words is to be underlined,
a line would have to be drawn explicitly. This line
would, however, not fit perfectly with the way Win API
draws the underline bar.
So the whole problem boils down to underlining a Space
with the help of the Win API and not only for regular
size Spaces but also for Tabs or glue Space in case of
using block adjusted mode.

A possible solution:
This could perhaps be done by using the 'kerning' feature
of ExtTextOutA/W, i.e. setting the dx to an appropriate value.
I have not tried it but it may be the place to start experiments.

- Josef


----- Original Message -----
From: "Treutwein Bernhard" <Bernhard.Treutwein{([at]})nowhere.xy
To: <BLACKBOX{([at]})nowhere.xy
Sent: Tuesday, March 17, 2009 4:30 PM
Subject: Re: [BLACKBOX] underlining spaces


Hi Jo,

what about using the combination of a zero width space and a non-breaking
space?
i.e.: 8B and A0. It does not look that good at a line end and behaves a
little
bit strange during selection, i.e. shift cursor. It does line breaking
correct,
but it is also difficult for searching and I have no idea how it handles via
clipboard/rtf.

--
  Bernhard 
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> -----Original Message-----
> From: BlackBox [mailto:BLACKBOX{([at]})nowhere.xy> Josef Templ
> Sent: Friday, March 13, 2009 1:12 PM
> To: BLACKBOX{([at]})nowhere.xy> Subject: Re: [BLACKBOX] underlining spaces
> 
> 
> The non-breaking-space (character A0) works fine in 
> most cases for me as a developer 
> but for an end-user it is hard to explain. It also 
> leads to possibly unwanted effects such as 'non-breaking' 
> or, in the case of using a digit space, a larger gap.
> It is also treated as a different char in a text search command.
> If you import e.g RTF text over the clipboard
> it would also need the text to be edited after
> pasting, which is simply too much work.
> 
> - Josef
> 
> 
> ----- Original Message ----- 
> From: "Campbell, Robert (SELEX GALILEO, UK)" 
> <Robert.D.Campbell{([at]})nowhere.xy> To: <BLACKBOX{([at]})nowhere.xy> Sent: Friday, March 13, 2009 12:35 PM
> Subject: Re: [BLACKBOX] underlining spaces
> 
> 
> I use ASCII character A0, rather than the usual space 20. 
> 
> Cheers
> 
> Robert
> 
> >> -----Original Message-----
> >> Hi Everybody!
> >>  
> >> In the BB text subsystem a space character is not shown as 
> >> underlined if the 'underlined' attribute is set.
> >>  
> >> I know that this was so from the beginning of BB, but 
> >> nevertheless I would like to ask if there is any reason for 
> >> this behavior.
> >> All text systems on the market do it the other way round, 
> >> i.e they underline space characters.
> >> This gives the user more control, because he can express 
> >> both cases, underlined and not by specifying the attribute, or not.
> >>  
> >> Would it be hard to change that in the text subsystem?
> >> Would it break something important?
> >>  
> >> - Josef
> >> 
> 
> 
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Received on Tue Mar 17 2009 - 17:40:30 UTC