I'm trying to find a way to scale fonts linearly. As far as I can tell, the
way to do it is to use a freetype font and turn hinting off. Using the API,
I tried to pull some code together that would try to do that, but
unfortunately, the font is still scaling non-linearly.
cairo_font_options_t *options;
PangoFontMap *fm;
PangoContext *context;
fm = pango_cairo_font_map_new_for_font_type (CAIRO_FONT_TYPE_FT);
pango_cairo_font_map_set_resolution (PANGO_CAIRO_FONT_MAP(fm), 96);
context = pango_cairo_font_map_create_context
(PANGO_CAIRO_FONT_MAP(fm));
options = cairo_font_options_create ();
cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
pango_cairo_context_set_font_options (context, options);
.
During runtime I receive the following error:
Pango-CRITICAL **: pango_cairo_font_map_create_context: assertion
`PANGO_IS_CAIRO_FONT_MAP (fontmap)' failed
Specifically, how can I use a PangoCairoFontMap in such a scenario? The
documentation states that I should be getting such a structure upon calling
pango_cairo_font_map_new_for_font_type. However, all I get is a
PangoFontMap. I'm not sure what the difference is between these two
structures and/or if one can be type cast onto another.
More generally, how can I scale fonts linearly using the Pango, Cairo API?
Tutorials, guides would be very helpful.
Thanks,
Karl
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