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[color] Round extents when scaling

This commit is contained in:
Behdad Esfahbod 2018-10-28 22:45:53 -07:00
parent c929ccfcea
commit e998fb9fbf
2 changed files with 13 additions and 11 deletions
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12
src/hb-ot-color-cbdt-table.hh
View File

@ -443,11 +443,13 @@ struct CBDT
}
}
/* Convert to the font units. */
extents->x_bearing *= upem / (float) x_ppem;
extents->y_bearing *= upem / (float) y_ppem;
extents->width *= upem / (float) x_ppem;
extents->height *= upem / (float) y_ppem;
/* Convert to font units. */
double x_scale = upem / (double) x_ppem;
double y_scale = upem / (double) y_ppem;
extents->x_bearing = round (extents->x_bearing * x_scale);
extents->y_bearing = round (extents->y_bearing * y_scale);
extents->width = round (extents->width * x_scale);
extents->height = round (extents->height * y_scale);
return true;
}

12
src/hb-ot-color-sbix-table.hh
View File

@ -252,14 +252,14 @@ struct sbix
extents->width = png.IHDR.width;
extents->height = png.IHDR.height;
/* Convert to the font units. */
/* Convert to font units. */
if (strike_ppem)
{
unsigned int upem = font->face->upem;
extents->x_bearing *= upem / (float) strike_ppem;
extents->y_bearing *= upem / (float) strike_ppem;
extents->width *= upem / (float) strike_ppem;
extents->height *= upem / (float) strike_ppem;
double scale = font->face->upem / (double) strike_ppem;
extents->x_bearing = round (extents->x_bearing * scale);
extents->y_bearing = round (extents->y_bearing * scale);
extents->width = round (extents->width * scale);
extents->height = round (extents->height * scale);
}
hb_blob_destroy (blob);