1. only glfont is required
2. font stuff is always in points. You raise a good point about the
granularity, but this will not be addressed in 601.
3. I'm reluctant to add the Overhang member to the glqtextmetric result.
You should use glqextent in laying out text rather than trying to do
calcs with extra textmetrics info. I believe that if you did a glqextent
on text with a normal and then a bold font you would in fact determine
the overhang value more acurately than is returned in textmetrics.
4. SetTextCharacterExtra won't be supported in 601. It may be considered
for future releases if there is a strong argument for its support.
----- Original Message -----
From: "bill lam" <[EMAIL PROTECTED]>
To: "Beta forum" <[email protected]>
Sent: Wednesday, August 09, 2006 4:30 AM
Subject: [Jbeta] glqtextmetrics related
environment: J601 p beta/win32
J504
glqtextmetrics '' ; return font information. The context (screen or
printer) is
selected by glextent and the font is selected by glextentfont. The
values are:
Height, Ascent, Descent, InternalLeading, ExternalLeading,
AverageCharWidth,
MaxCharWidth
J601
glqtextmetrics '' ; return font information: Height, Ascent, Descent,
InternalLeading, ExternalLeading, AverageCharWidth, MaxCharWidth
1. In J601, there is no glextend and glextentfont, so is it sufficient
to set
glfont before calling glqtextmetrics?
2. In J504, the values are in logical unit (pixel,twips...) depending
on mapping
mode. In J601 I suspect the values are always in points, because the
values are
rounded and point is a rather large unit, it becomes inaccurate. Could
the
values either use logical unit, or double precision point values?
3. could it also give the "Overhang" member in TEXTMETRIC? It is
useful to
calculate exact width of bold and italic text.
4. Sometimes the font size is correct, but the text is too crowded.
Will it be
possible to add a gl command that equivalent to SetTextCharacterExtra
?
--
regards,
bill
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