bool FreeTypeFontInfo::EmbeddedBmpExist(int px)
{
if (px>=256 || px<0)
return false;
if (m_ebmps[px]!=-1)
return !!m_ebmps[px];
CCriticalSectionLock __lock(CCriticalSectionLock::CS_MANAGER);
FTC_ImageTypeRec imgtype={(FTC_FaceID)m_id, px, px, FT_LOAD_DEFAULT}; //构造一个当前大小的imagetype
FT_Glyph temp_glyph=NULL;
FT_UInt gindex = FTC_CMapCache_Lookup(cmap_cache, (FTC_FaceID)m_id, -1, FT_UInt32(L'0')); //获得0的索引值
FTC_ImageCache_Lookup(image_cache, &imgtype, gindex, &temp_glyph, NULL);
if (temp_glyph && temp_glyph->format==FT_GLYPH_FORMAT_BITMAP) //如果可以读到0的点阵
m_ebmps[px]=1; //则该字号存在点阵
else
{
gindex = FTC_CMapCache_Lookup(cmap_cache, (FTC_FaceID)m_id, -1, FT_UInt32(L'的')); //获得"的"的索引值
if (gindex)
FTC_ImageCache_Lookup(image_cache, &imgtype, gindex, &temp_glyph, NULL); //读取“的”的点阵
if (temp_glyph && temp_glyph->format==FT_GLYPH_FORMAT_BITMAP) //如果可以读到0的点阵
m_ebmps[px]=1; //则该字号存在点阵
else
m_ebmps[px]=0;
}
return !!m_ebmps[px];
}
inline FT_Error fontRenderClass::getGlyphImage(FTC_Image_Desc *font, FT_ULong glyph_index, FT_Glyph *glyph, FT_Glyph *borderglyph, int bordersize)
#endif
{
FT_Glyph image;
FT_Error err = FTC_ImageCache_Lookup(imageCache, font, glyph_index, &image, NULL);
if (err) return err;
if (glyph)
{
err = FT_Glyph_Copy(image, glyph);
if (err) return err;
}
if (borderglyph && bordersize)
{
err = FT_Glyph_Copy(image, borderglyph);
if (err) return err;
if (bordersize != strokerRadius)
{
strokerRadius = bordersize;
FT_Stroker_Set(stroker, strokerRadius, FT_STROKER_LINECAP_ROUND, FT_STROKER_LINEJOIN_ROUND, 0);
}
err = FT_Glyph_Stroke(borderglyph, stroker, 1);
}
return err;
}
int
test_image_cache( btimer_t* timer,
FT_Face face,
void* user_data )
{
FT_Glyph glyph;
int i, done = 0;
FT_UNUSED( user_data );
if ( !image_cache )
{
if ( FTC_ImageCache_New(cache_man, &image_cache) )
return 0;
}
TIMER_START( timer );
for ( i = 0; i < face->num_glyphs; i++ )
{
if ( !FTC_ImageCache_Lookup(image_cache, &font_type, i, &glyph, NULL) )
done++;
}
TIMER_STOP( timer );
return done;
}
FTC_Image_Cache_Lookup( FTC_Image_Cache icache,
FTC_Image_Desc* desc,
FT_UInt gindex,
FT_Glyph *aglyph )
{
FTC_ImageTypeRec type0;
if ( !desc )
return FTC_Err_Invalid_Argument;
type0.font = desc->font;
/* convert image type flags to load flags */
{
FT_UInt load_flags = FT_LOAD_DEFAULT;
FT_UInt type = desc->image_type;
/* determine load flags, depending on the font description's */
/* image type */
if ( ftc_image_format( type ) == ftc_image_format_bitmap )
{
if ( type & ftc_image_flag_monochrome )
load_flags |= FT_LOAD_MONOCHROME;
/* disable embedded bitmaps loading if necessary */
if ( type & ftc_image_flag_no_sbits )
load_flags |= FT_LOAD_NO_BITMAP;
}
else
{
/* we want an outline, don't load embedded bitmaps */
load_flags |= FT_LOAD_NO_BITMAP;
if ( type & ftc_image_flag_unscaled )
load_flags |= FT_LOAD_NO_SCALE;
}
/* always render glyphs to bitmaps */
load_flags |= FT_LOAD_RENDER;
if ( type & ftc_image_flag_unhinted )
load_flags |= FT_LOAD_NO_HINTING;
if ( type & ftc_image_flag_autohinted )
load_flags |= FT_LOAD_FORCE_AUTOHINT;
type0.flags = load_flags;
}
return FTC_ImageCache_Lookup( (FTC_ImageCache)icache,
&type0,
gindex,
aglyph,
NULL );
}
FTC_Image_Cache_Lookup( FTC_ImageCache icache,
FTC_OldImage_Desc* desc,
FT_UInt gindex,
FT_Glyph *aglyph )
{
FTC_ImageTypeRec type0;
if ( !desc )
return FTC_Err_Invalid_Argument;
ftc_image_type_from_old_desc( &type0, desc );
return FTC_ImageCache_Lookup( (FTC_ImageCache)icache,
&type0,
gindex,
aglyph,
NULL );
}
