Re: [ft] Missing glyphs vs. invisible glyphs for certain characters

[Nikolay Sivov]

On 04.12.2015 16:48, Preet wrote:
> Hi all
>
> I've tried a few fonts out and I seem to be getting the same behaviour:
> The zero index is returned for a few glyphs that I thought would be
> 'invisible' such as line feed or tab when I call FT_Get_Char_Index(...).
> After rendering, the zero index glyph shows up as the visible 'missing
> glyph' symbol.
>
> Is this expected behavior? When rendering is it normal to go through the
> text and get rid of these characters before getting glyphs from
> FreeType? I'm aware FreeType isn't laying out the text, but I guess I
> thought the layout characters would have invisible glyphs.

It depends on a font, freetype returns index for a char you asked for, 
if font doesn't provide a glyph for it, you'll get 0. Higher level 
layout logic is supposed to handle that.

> Preet
>
>
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