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Re: [ft] Getting width of space
From: |
Peter Weilbacher |
Subject: |
Re: [ft] Getting width of space |
Date: |
Mon, 21 May 2007 11:47:01 +0200 (CEST) |
On Mon, 21 May 2007, David Turner wrote:
glyph->metrics.width corresponds to the actual width of the glyph. In the case
of any
"spacing" character, this is normally 0.
what you really want is the horizontal advance, try face->glyph->horiAdvance
instead.
If you don't understand what I mean, try reading the "Glyph Conventions"
document on
the FreeType web site...
I guess you mean face->glyph->metrics.horiAdvance (because
face->glyph->linearHoriAdvance is there but seems to give something
completely different, even with >> 16). horiAdvance seems to be the same
as advance.x for several fonts I tried. Unfortunately it is not always
easy to relate properties in the documentation with structure members in
the API...
That leaves the second of my original questions. advance.x = horiAdvance
for a space seems awfully small to me. For MS Arial I get
'm': width=576, horiAdvance=640, advance.x=640
'n': width=384, horiAdvance=448, advance.x=448
'x': width=384, horiAdvance=384, advance.x=384
'i': width=128, horiAdvance=192, advance.x=192
'.': width=128, horiAdvance=192, advance.x=192
' ': width= 0, horiAdvance=192, advance.x=192
When I use those advances t draw continuous text it is very hard to
discriminate where words start and end. When I look at nicely layouted
text (LaTeX) it seems to me that the space between words is about the
same as the width of the x character but not as narrow as the i or the
dot as the above numbers seem to apply. I therefore used 2*advance.x but
that seems kind of wrong...
Peter.
- Re: [ft] Getting width of space, Werner LEMBERG, 2007/05/18
- Re: [ft] Getting width of space, Peter Weilbacher, 2007/05/18
- Re: [ft] Getting width of space, Werner LEMBERG, 2007/05/18
- Re: [ft] Getting width of space, Peter Weilbacher, 2007/05/18
- Re: [ft] Getting width of space, Werner LEMBERG, 2007/05/18
- Re: [ft] Getting width of space, Peter Weilbacher, 2007/05/19
- Re: [ft] Getting width of space, Peter Weilbacher, 2007/05/19
- Re: [ft] Getting width of space, Werner LEMBERG, 2007/05/20
- Re: [ft] Getting width of space, Peter Weilbacher, 2007/05/21