fdo-mirrors/cairo
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/cairo/cairo.git synced 2026-05-04 21:08:10 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Force non-AA text when using a bitmap strike with only scaling transform.

Browse source 
When the current font size matches one of the available fixed sizes, and
the overall transform has only scaling components, FreeType will use the
fixed size bitmaps by default. For glyphs which do not have bitmaps,
force them to be rendered in monochrome instead of anti-aliased so
that they all match nicely.
This commit is contained in:
Keith Packard 2007-10-30 22:00:59 -07:00
parent f09f02a6e8
commit 06af5c2891
1 changed files with 24 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
src/cairo-ft-font.c
View file

@ -1506,6 +1506,30 @@ _cairo_ft_scaled_font_create (cairo_ft_unscaled_font_t *unscaled,
goto FAIL;
}
/*
* Force non-AA drawing when using a bitmap strike that
* won't be resampled due to non-scaling transform
*/
if (!unscaled->have_shape &&
(scaled_font->ft_options.load_flags & FT_LOAD_NO_BITMAP) == 0 &&
scaled_font->ft_options.base.antialias != CAIRO_ANTIALIAS_NONE &&
(face->face_flags & FT_FACE_FLAG_FIXED_SIZES))
{
int i;
FT_Size_Metrics *size_metrics = &face->size->metrics;
for (i = 0; i < face->num_fixed_sizes; i++)
{
FT_Bitmap_Size *bitmap_size = &face->available_sizes[i];
if (bitmap_size->x_ppem == size_metrics->x_ppem * 64 &&
bitmap_size->y_ppem == size_metrics->y_ppem * 64)
{
scaled_font->ft_options.base.antialias = CAIRO_ANTIALIAS_NONE;
break;
}
}
}
metrics = &face->size->metrics;