HGL

[John Meacham]

there also seems to be a bug in it's implementation causing the size
result to diverge. changing the lines:
    x2 = x2 + width
    y2 = y2 + ascent + descent
to 
    x2 = x1 + width
    y2 = y1 + ascent + descent
seems to fix it.

I also see various ways the X11 version could be improved, helping
efficiency when double buffering, and improving compliance with modern
window manager protocols. where should patches be sent? I have write
access to the repository but wouldn't want to step on someones toes if
sending patches to the list is more appropriate.
        John

On Tue, Jul 08, 2003 at 10:38:40AM +0100, Alastair Reid wrote:
> On Tuesday 08 July 2003 1:30 am, John Meacham wrote:
> > using HGL, I notice that there does not appear to be a way to get at the
> > rendered size of text strings. this makes it very difficult to work with
> > text in any meaningful way. although perhaps i am missing something.
> 
> The module Graphics.HGL.X11.Picture exports this function:
> 
> -- textInfo s returns:
> --
> -- 1) The offset at which the string would be drawn according to the
> --    current text alignment (e.g., (Center, Baseline) will result in
> --    an offset of (-width/2,0))
> --
> -- 2) The size at which the text would be drawn using the current font.
> --
> textInfo :: String -> Draw ((Point,Size))
> 
> This is not yet available on Win32 and, due to an oversight, was not exported 
> from Graphics.HGL.X11 or Graphics.HGL.  I'll fix that in the next release.
> 
> --
> Alastair
> 
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-- 
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John Meacham - California Institute of Technology, Alum. - john@foo.net
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