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[ft] Check for FT_Get_Transform at build time

This commit is contained in:
Khaled Hosny 2022-07-15 21:36:50 +02:00
parent 901236f721
commit e294200dac
3 changed files with 24 additions and 1 deletions
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2
configure.ac
View File

@ -308,7 +308,7 @@ if $have_freetype; then
AC_DEFINE(HAVE_FREETYPE, 1, [Have FreeType 2 library])
save_libs=$LIBS
LIBS="$LIBS $FREETYPE_LIBS"
AC_CHECK_FUNCS(FT_Get_Var_Blend_Coordinates FT_Set_Var_Blend_Coordinates FT_Done_MM_Var)
AC_CHECK_FUNCS(FT_Get_Var_Blend_Coordinates FT_Set_Var_Blend_Coordinates FT_Done_MM_Var FT_Get_Transform)
LIBS=$save_libs
fi
AM_CONDITIONAL(HAVE_FREETYPE, $have_freetype)

1
meson.build
View File

@ -198,6 +198,7 @@ if freetype_dep.found()
['FT_Get_Var_Blend_Coordinates', {'deps': freetype_dep}],
['FT_Set_Var_Blend_Coordinates', {'deps': freetype_dep}],
['FT_Done_MM_Var', {'deps': freetype_dep}],
['FT_Get_Transform', {'deps': freetype_dep}],
]
if freetype_dep.type_name() == 'internal'

22
src/hb-ft.cc
View File

@ -422,9 +422,13 @@ hb_ft_get_glyph_h_advances (hb_font_t* font, void* font_data,
hb_lock_t lock (ft_font->lock);
FT_Face ft_face = ft_font->ft_face;
int load_flags = ft_font->load_flags;
#ifdef HAVE_FT_GET_TRANSFORM
FT_Matrix matrix;
FT_Get_Transform (ft_face, &matrix, nullptr);
float mult = matrix.xx / 65536.f;
#else
float mult = font->x_scale < 0 ? -1 : +1;
#endif
for (unsigned int i = 0; i < count; i++)
{
@ -456,9 +460,13 @@ hb_ft_get_glyph_v_advance (hb_font_t *font,
const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
hb_lock_t lock (ft_font->lock);
FT_Fixed v;
#ifdef HAVE_FT_GET_TRANSFORM
FT_Matrix matrix;
FT_Get_Transform (ft_font->ft_face, &matrix, nullptr);
float y_mult = matrix.yy / 65536.f;
#else
float y_mult = font->y_scale < 0 ? -1 : +1;
#endif
if (unlikely (FT_Get_Advance (ft_font->ft_face, glyph, ft_font->load_flags | FT_LOAD_VERTICAL_LAYOUT, &v)))
return 0;
@ -484,10 +492,15 @@ hb_ft_get_glyph_v_origin (hb_font_t *font,
const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
hb_lock_t lock (ft_font->lock);
FT_Face ft_face = ft_font->ft_face;
#ifdef HAVE_FT_GET_TRANSFORM
FT_Matrix matrix;
FT_Get_Transform (ft_face, &matrix, nullptr);
float x_mult = matrix.xx / 65536.f;
float y_mult = matrix.yy / 65536.f;
#else
float x_mult = font->x_scale < 0 ? -1 : +1;
float y_mult = font->y_scale < 0 ? -1 : +1;
#endif
if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags)))
return false;
@ -534,10 +547,15 @@ hb_ft_get_glyph_extents (hb_font_t *font,
const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
hb_lock_t lock (ft_font->lock);
FT_Face ft_face = ft_font->ft_face;
#ifdef HAVE_FT_GET_TRANSFORM
FT_Matrix matrix;
FT_Get_Transform (ft_face, &matrix, nullptr);
float x_mult = matrix.xx / 65536.f;
float y_mult = matrix.yy / 65536.f;
#else
float x_mult = font->x_scale < 0 ? -1 : +1;
float y_mult = font->y_scale < 0 ? -1 : +1;
#endif
if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags)))
return false;
@ -639,9 +657,13 @@ hb_ft_get_font_h_extents (hb_font_t *font HB_UNUSED,
const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
hb_lock_t lock (ft_font->lock);
FT_Face ft_face = ft_font->ft_face;
#ifdef HAVE_FT_GET_TRANSFORM
FT_Matrix matrix;
FT_Get_Transform (ft_face, &matrix, nullptr);
float y_mult = matrix.yy / 65536.f;
#else
float y_mult = font->y_scale < 0 ? -1 : +1;
#endif
metrics->ascender = FT_MulFix(ft_face->ascender, ft_face->size->metrics.y_scale);
metrics->descender = FT_MulFix(ft_face->descender, ft_face->size->metrics.y_scale);