void ass_face_set_size(FT_Face face, double size)
{
TT_HoriHeader *hori = FT_Get_Sfnt_Table(face, ft_sfnt_hhea);
TT_OS2 *os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2);
double mscale = 1.;
FT_Size_RequestRec rq;
FT_Size_Metrics *m = &face->size->metrics;
// VSFilter uses metrics from TrueType OS/2 table
// The idea was borrowed from asa (http://asa.diac24.net)
if (os2) {
int ft_height = 0;
if (hori)
ft_height = hori->Ascender - hori->Descender;
if (!ft_height)
ft_height = os2->sTypoAscender - os2->sTypoDescender;
/* sometimes used for signed values despite unsigned in spec */
int os2_height = (short)os2->usWinAscent + (short)os2->usWinDescent;
if (ft_height && os2_height)
mscale = (double) ft_height / os2_height;
}
memset(&rq, 0, sizeof(rq));
rq.type = FT_SIZE_REQUEST_TYPE_REAL_DIM;
rq.width = 0;
rq.height = double_to_d6(size * mscale);
rq.horiResolution = rq.vertResolution = 0;
FT_Request_Size(face, &rq);
m->ascender /= mscale;
m->descender /= mscale;
m->height /= mscale;
}
static void face_set_size(FT_Face face, double size)
{
#if (FREETYPE_MAJOR > 2) || ((FREETYPE_MAJOR == 2) && (FREETYPE_MINOR > 1))
TT_HoriHeader *hori = FT_Get_Sfnt_Table(face, ft_sfnt_hhea);
TT_OS2 *os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2);
double mscale = 1.;
FT_Size_RequestRec rq;
FT_Size_Metrics *m = &face->size->metrics;
// VSFilter uses metrics from TrueType OS/2 table
// The idea was borrowed from asa (http://asa.diac24.net)
if (hori && os2) {
int hori_height = hori->Ascender - hori->Descender;
int os2_height = os2->usWinAscent + os2->usWinDescent;
if (hori_height && os2_height)
mscale = (double)hori_height / os2_height;
}
memset(&rq, 0, sizeof(rq));
rq.type = FT_SIZE_REQUEST_TYPE_REAL_DIM;
rq.width = 0;
rq.height = double_to_d6(size * mscale);
rq.horiResolution = rq.vertResolution = 0;
FT_Request_Size(face, &rq);
m->ascender /= mscale;
m->descender /= mscale;
m->height /= mscale;
#else
FT_Set_Char_Size(face, 0, double_to_d6(size), 0, 0);
#endif
}
float FontInstance::GetHeight(void)
{
ScopedLock Sl(Lock);
FT_Size_Request Size;
FT_Request_Size(Face,Size);
return (float)Size->height/64.0f;
};
T42_Size_Request( T42_Size size,
FT_Size_Request req )
{
T42_Face face = (T42_Face)size->root.face;
FT_Error error;
FT_Activate_Size( size->ttsize );
error = FT_Request_Size( face->ttf_face, req );
if ( !error )
( (FT_Size)size )->metrics = face->ttf_face->size->metrics;
return error;
}
T42_Size_Request( FT_Size t42size, /* T42_Size */
FT_Size_Request req )
{
T42_Size size = (T42_Size)t42size;
T42_Face face = (T42_Face)t42size->face;
FT_Error error;
FT_Activate_Size( size->ttsize );
error = FT_Request_Size( face->ttf_face, req );
if ( !error )
t42size->metrics = face->ttf_face->size->metrics;
return error;
}
s16 fsLowLevelAPI::drawFreeTypeFont(void* image, u16 image_width, u16 image_height, //
void* font_info, u32 font_index, u16 font_size, s16 x, s16 y, const wchar_t* str)
{
FT_Face face = *(reinterpret_cast<FT_Face*>(static_cast<u32*>(font_info) + 1) + font_index);
FT_Size_RequestRec size_req;
size_req.type = FT_SIZE_REQUEST_TYPE_CELL;
size_req.width = 0;
size_req.height = font_size << 6;
size_req.horiResolution = 0;
size_req.vertResolution = 0;
if (FT_Request_Size(face, &size_req))
{
return -1;
}
if (image)
{
s32 pen_x = x;
s32 pen_y = y + static_cast<s32>(face->ascender * face->size->metrics.y_ppem / face->units_per_EM);
RasterInfo raster_info;
raster_info.image = image;
raster_info.width = image_width;
FT_Raster_Params raster_params = {};
raster_params.flags = FT_RASTER_FLAG_AA | FT_RASTER_FLAG_DIRECT | FT_RASTER_FLAG_CLIP;
raster_params.gray_spans = static_cast<FT_Raster_Span_Func>(rasterSpanFunc);
raster_params.user = &raster_info;
raster_params.clip_box.yMin = pen_y - image_height;
raster_params.clip_box.yMax = pen_y;
FT_GlyphSlot glyph_slot = face->glyph;
for ( ; *str != L'\0'; str++)
{
if (FT_Load_Char(face, *str, FT_LOAD_DEFAULT | FT_LOAD_NO_BITMAP))
{
return -1;
}
if (glyph_slot->format != FT_GLYPH_FORMAT_OUTLINE)
{
return -1;
}
raster_params.clip_box.xMin = -pen_x;
raster_params.clip_box.xMax = image_width - pen_x;
raster_info.pen_x = pen_x;
raster_info.pen_y = pen_y;
if (FT_Outline_Render(s_freetype, &glyph_slot->outline, &raster_params))
{
return -1;
}
pen_x += glyph_slot->advance.x >> 6;
}
return pen_x - x;
}
else
{
unsigned int draw_freetype_font(char** image, unsigned* image_width, unsigned* image_height, void* font_info, unsigned long font_index, size_t font_size, unsigned int x, unsigned int y, const char* cstr)
{
size_t len = strlen(cstr) + 1;
wchar_t* str = new wchar_t[len];
wmemset(str, 0, len);
utf8ToWchar(str, len, cstr);
if(!font_info)return -1;
FT_Face face = *(reinterpret_cast<FT_Face*>(font_info) + font_index);
FT_Size_RequestRec size_req;
size_req.type = FT_SIZE_REQUEST_TYPE_CELL;
size_req.width = 0;
size_req.height = font_size << 6;
size_req.horiResolution = 0;
size_req.vertResolution = 0;
if (FT_Request_Size(face, &size_req))
{
return -1;
}
if (*image)
{
unsigned int pen_x = x;
unsigned int pen_y = y + static_cast<unsigned int>(face->ascender * face->size->metrics.y_ppem / face->units_per_EM);
RasterInfo raster_info;
raster_info.image = *image;
raster_info.width = *image_width;
FT_Raster_Params raster_params = {};
raster_params.flags = FT_RASTER_FLAG_AA | FT_RASTER_FLAG_DIRECT | FT_RASTER_FLAG_CLIP;
raster_params.gray_spans = static_cast<FT_Raster_Span_Func>(rasterSpanFunc);
raster_params.user = &raster_info;
raster_params.clip_box.yMin = pen_y - *image_height;
raster_params.clip_box.yMax = pen_y;
FT_GlyphSlot glyph_slot = face->glyph;
for ( ; *str != L'\0'; str++)
{
if (FT_Load_Char(face, *str, FT_LOAD_DEFAULT | FT_LOAD_NO_BITMAP))
{
return -1;
}
if (glyph_slot->format != FT_GLYPH_FORMAT_OUTLINE)
{
return -1;
}
raster_params.clip_box.xMin = -pen_x;
raster_params.clip_box.xMax = *image_width - pen_x;
raster_info.pen_x = pen_x;
raster_info.pen_y = pen_y;
if (FT_Outline_Render(s_freetype, &glyph_slot->outline, &raster_params))
{
return -1;
}
pen_x += glyph_slot->advance.x >> 6;
}
return pen_x - x;
}
else
{