Note that even scalable font formats can have embedded bitmap strikes!Ī pointer to an array of FT_Bitmap_Size elements. For example, a font face could include strikes for pixel sizes 10, 12, and 14. A strike is a series of glyph images for a given character pixel size. This field gives the number of embedded bitmap strikes in the current face. It indicates the number of font units covered by the EM. This field is only valid for scalable formats (it is set to 0 otherwise). For more information on face flags, please read the FreeType 2 API Reference. For example, the flag FT_FACE_FLAG_SCALABLE indicates that the face’s font format is scalable and that glyph images can be rendered for all character pixel sizes. A glyph is a character image, nothing more – it thus doesn’t necessarily correspond to a character code.Ī 32-bit integer containing bit flags that describe some face properties. This variable gives the number of glyphs available in the font face. However, we describe here a few of them in more detail. The complete list of available fields is in theĭescription. Usually, this data can be accessed directly by dereferencing a handle, like in Accessing the Face DataĪ face object models all information that globally describes the face. We advise you to look up the FreeType 2 reference Specific driver for opening, or even pass extra parameters to the font driver Which can be used to open a new font face with a custom input stream, select a With FreeType 2, it is possible to provide your own There are cases where using a file pathname or preloading the file into memory From Other Sources (Compressed Files, Network, etc.) Note that you must not deallocate the memory before callingįT_Done_Face. Other than that, it hasĮxactly the same semantics as FT_New_Face. Similarly create a new face object for it by callingĪs you can see, FT_New_Memory_Face takes a pointer to the font file bufferĪnd its size in bytes instead of a file pathname. In the case where you have already loaded the font file into memory, you can Is, face_index should be set to zero), then check the value ofįace->num_faces, which indicates how many faces are embedded in the font To know how many faces a given font file contains, load its first face (this Index 0 always works, though.Ī pointer to the handle that is set to describe the new face object. An error is returned if its value is too large. This index tells which face you want to load. The font file pathname (a standard C string).Ĭertain font formats allow several font faces to be embedded in a single file. libraryĪ handle to the FreeType library instance where the face object is created. be opened or read, or that it is broken.Īs you can certainly imagine, FT_New_Face opens a font file, then tries toĮxtract one face from it. another error code means that the font file could not the font file could be opened and read, but it appears If ( error = FT_Err_Unknown_File_Format ) You should do that using the macro FT_FREETYPE_H, like in the followingįT_Library library /* handle to library */įT_Face face /* handle to face object */ Include the main FreeType 2 API header file. It contains various macro declarations that are later used to #include theĪppropriate public FreeType 2 header files. Installed on your system, as well as the required librarian and linker Script can also be used to check the version of the library that is cflags option to retrieve the appropriate compilation flags. In Unix-like environments you can run the freetype-config script with the You have to add it to your compilation include path. The following are instructions required to compile an application that uses the Accessing Design Metrics (Glyph & Global) Accessing Metrics in Design Font Units, and Scaling Them Advanced Text Rendering: Transformation and Centering and Kerning Simple Text Rendering: Kerning and Centering Converting a Character Code Into a Glyph Index
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