How can I enable synthetic bold in cairo?

Hello everyone,




I want to enable synthetic bold in cairo.


In _cairo_ft_scaled_glyph_init API, I can use FT_GlyphSlot_Embolden if scaled_font->ft_options.extra_flags has CAIRO_FT_OPTIONS_EMBOLDEN flag.


But this approach is only supported for cairo_ft_font_face_create_for_pattern.


Actually I use cairo_ft_font_face_create_for_ft_face API for creating font face.


So I suggest to add addtional parameter(cairo_ft_extra_flags_t) to cairo_ft_font_face_create_for_ft_face to enable synthetic bold.




* current code


cairo_font_face_t *
cairo_ft_font_face_create_for_ft_face (FT_Face face,
int load_flags)


{


...


//current code always set extra_flags as zero.


ft_options.extra_flags = 0;


...


}




* My suggestion


cairo_font_face_t *
cairo_ft_font_face_create_for_ft_face (FT_Face face,
int load_flags, cairo_ft_extra_flags_t extra_flags)


{


...


ft_options.extra_flags = extra_flags;


...


}




Please give me some feedback.


Thank you in advance.




BR,


Deokjin Kim

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