Re: size of a NSFont
Re: size of a NSFont
- Subject: Re: size of a NSFont
- From: Half Activist <email@hidden>
- Date: Wed, 7 Mar 2007 09:19:23 +0100
Hi Ewan,
actually the NSFont method you're looking for is -(float)pointSize
I guess there's no lineHeight method because an NSFont object is
representing
a font typeface, it's not linked to a text drawing context, so a
lineHeight method would be pointless.
Furthermore, even when drawing text, you can have a line height
that's smaller than the max font height,
i mean the biggest height for the font, the result would be crappy
but why couldn't you do this.
If you want to know the height of a string rendered in a given font,
you could use NSString's sizeWithAttributes:
or use NSTextLayout, that - i think - will bring you line height etc
etc.
Regards.
On Mar 7, 2007, at 8:43 AM, email@hidden wrote:
Hello all,
even after reading the documentation I'm still confused on how to
access
the size of a NSFont. I need it in a piece of code like this :
(*starting with an NSFont oldFont*)
float oldSize=[myFont size];
float newSize=oldSize/2;
NSFont* newFont=[[NSFontManager sharedFontManager]
convertFont: oldFont toSize: newSize];
Unfortunately, there's no method called "size" for an NSFont. In
terms
of figure 1 in
Text&Fonts>Font Handling>Getting Font Metrics, that would be the "line
height."
There are "capHeight,xHeight" methods for NSFont, why is there not a
"lineHeight" method ?
In the documentation I have seen many methods for NSFont that are
certainly related,
but it's not clear to me which one I should use. I should like the
method
to make no
assumption of the font, since it is intended for use in a text
editor ;
even if
it is initialized with a standard user font, it may have been
modified arbitrarily by the user afterwards.
Ewan
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