Re: [ft] php character map => filter unused characters?

[D.L.D.]

Hello

i have placed the code for ttf reading on the page
its messy and not complete yet
think php is alike c

i think there are only 2 commands to use freetype in php for ttf to image
imagettfbbox 
<http://nl2.php.net/manual/en/function.imagettfbbox.php> -- Give the 
bounding box of a text using TrueType fonts
imagettftext 
<http://nl2.php.net/manual/en/function.imagettftext.php> -- Write text 
to the image using TrueType fonts

so im trying to read the ttf file myself to filter out unused characters 
for the charmap page

for my messy php code see

http://www.phpenabled.com/ttf_fontlist/fontlist.php?font=Phones_NormalA.ttf

greetings luberth




address@hidden wrote:

> Hi
>
> On Thu, 03 Nov 2005 13:29:47 +0100
> "D.L.D." <address@hidden> wrote:
>  
>
> > is it possible to filter out the rectangle and unused character?
> >    
>
> Yes, it's almost possible, although there's no perfect solution.
> The rectangle you see is fallbacking glyph. According to Microsoft
> TrueType specification (see specification of "loca" table):
>
>  
>
> > By definition, index zero points to the "missing character,"
> > which is the character that appears if a character is not
> > found in the font. The missing character is commonly represented
> > by a blank box (such as ) or a space.
> >    
>
> So, if you exclude the character whose GlyphID=0,
> you can exclude the rectangle. But, keep it in your mind:
> there are CJK fonts whose GlyphID=0 is a space, and some
> CJK fonts uses it for the glyph for "fullwidth space" 
> (which is defined charcode) too.
>
> In addition, for multibyte cmap handler of TrueType font
> is specified to fallback to GlyphID=0 when the handler
> receives undecodable byte sequence (see "cmap" specifcation).
> But, I could not find such solid algorithmic specification
> for cmap format 0 for ASCII/Latin-1.
>
>  
>
> > is there a way to do this in php?
> > for example filter only the used characters of
> > http://www.phpenabled.com/ttf_fontlist/fontlist.php?font=Phones_NormalA.ttf
> >    
>
> I'm unfamiliar with PHP - and don't know PHP has FreeType
> module or PHP uses independent TTF handler (aslike Fonts-TTF
> module of perl).
>
> Regards,
> mpsuzuki
>
>
>
>  


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