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Re: [ft] How to determine which Unicode blocks a True Type font supports
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From: |
Lawrence D'Oliveiro |
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Subject: |
Re: [ft] How to determine which Unicode blocks a True Type font supports? |
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Date: |
Tue, 7 Jul 2015 11:30:28 +1200 |
On Mon, 6 Jul 2015 14:12:08 +0100, DK wrote:
> Is there a way using FreeType on Windows to determine:
>
> 1. Which Unicode blocks (as per http://unicode.org/ V8.0.0) the
> font supports?
>
> 2. In the blocks it supports, how many of the characters are
> supported?
It’s quite easy. Just call FT_Get_Char_Index for every character code,
and see which ones return a nonzero glyph index.
You can also iterate over all character/glyph mappings with
FT_Get_First_Char and FT_Get_Next_Char.
Example of both techniques (in Python) here:
<https://github.com/ldo/python_freetype_examples/blob/master/code_coverage>.