diff options
Diffstat (limited to 'libass/ass_font.c')
| -rw-r--r-- | libass/ass_font.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/libass/ass_font.c b/libass/ass_font.c index 80490fad6a..c09a05a854 100644 --- a/libass/ass_font.c +++ b/libass/ass_font.c @@ -178,6 +178,24 @@ static void ass_font_reselect(void* fontconfig_priv, ass_font_t* font) } #endif +void ass_font_get_asc_desc(ass_font_t* font, uint32_t ch, int* asc, int* desc) +{ + FT_Face face = font->face; + if (FT_Get_Char_Index(face, ch)) { + int v, v2; + v = face->size->metrics.ascender; + v2 = FT_MulFix(face->bbox.yMax, face->size->metrics.y_scale); + *asc = (v > v2 * 0.9) ? v : v2; + + v = - face->size->metrics.descender; + v2 = - FT_MulFix(face->bbox.yMin, face->size->metrics.y_scale); + *desc = (v > v2 * 0.9) ? v : v2; + return; + } + + *asc = *desc = 0; +} + FT_Glyph ass_font_get_glyph(void* fontconfig_priv, ass_font_t* font, uint32_t ch) { int error; @@ -226,6 +244,20 @@ FT_Glyph ass_font_get_glyph(void* fontconfig_priv, ass_font_t* font, uint32_t ch return glyph; } +FT_Vector ass_font_get_kerning(ass_font_t* font, uint32_t c1, uint32_t c2) +{ + FT_Vector v = {0, 0}; + int i1, i2; + + if (!FT_HAS_KERNING(font->face)) + return v; + i1 = FT_Get_Char_Index(font->face, c1); + i2 = FT_Get_Char_Index(font->face, c2); + if (i1 && i2) + FT_Get_Kerning(font->face, i1, i2, FT_KERNING_DEFAULT, &v); + return v; +} + void ass_font_free(ass_font_t* font) { if (font->face) FT_Done_Face(font->face); |