[HarfBuzz] hb_buffer_get_glyph_positions() for NotoColorEmoji.ttf

Takao Fujiwara fujiwara at redhat.com
Fri May 19 08:45:55 UTC 2017

I'd like to get a character width and height and am thinking to use hb_buffer_get_glyph_positions()->x_advance .

I tried hello-harfbuzz with noto-emoji fonts:

Seems hello-harfbuzz can get x_advance with NotoEmoji-Reqular.ttf but it failed in FT_Set_Char_Size() or FT_Set_Pixel_Sizes() with NotoColorEmoji.ttf.
Even if I ignore the return value of FT_THROW(Invalid_Pixel_Size) from FT_Set_Pixel_Sizes(), seems hello-harfbuzz does not return the accurate x_advance.

Do you have any ideas to resolve it?

I'm using harfbuzz 1.3.2 and freetype 2.6.5 and testing U+1F469.

% ./hello-harfbuzz \
     /usr/share/fonts/google-noto-emoji/NotoColorEmoji.ttf \

Seems NotoEmoji-Reqular.ttf is a scalable font and NotoColorEmoji.ttf is a fixed size font.

More information about the HarfBuzz mailing list