| /***************************************************************************/ |
| /* */ |
| /* winfnt.c */ |
| /* */ |
| /* FreeType font driver for Windows FNT/FON files */ |
| /* */ |
| /* Copyright 1996-2001, 2002, 2003, 2004, 2006, 2007 by */ |
| /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
| /* Copyright 2003 Huw D M Davies for Codeweavers */ |
| /* Copyright 2007 Dmitry Timoshkov for Codeweavers */ |
| /* */ |
| /* This file is part of the FreeType project, and may only be used, */ |
| /* modified, and distributed under the terms of the FreeType project */ |
| /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
| /* this file you indicate that you have read the license and */ |
| /* understand and accept it fully. */ |
| /* */ |
| /***************************************************************************/ |
| |
| |
| #include <ft2build.h> |
| #include FT_WINFONTS_H |
| #include FT_INTERNAL_DEBUG_H |
| #include FT_INTERNAL_STREAM_H |
| #include FT_INTERNAL_OBJECTS_H |
| |
| #include "winfnt.h" |
| #include "fnterrs.h" |
| #include FT_SERVICE_WINFNT_H |
| #include FT_SERVICE_XFREE86_NAME_H |
| |
| /*************************************************************************/ |
| /* */ |
| /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
| /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
| /* messages during execution. */ |
| /* */ |
| #undef FT_COMPONENT |
| #define FT_COMPONENT trace_winfnt |
| |
| |
| static const FT_Frame_Field winmz_header_fields[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE WinMZ_HeaderRec |
| |
| FT_FRAME_START( 64 ), |
| FT_FRAME_USHORT_LE ( magic ), |
| FT_FRAME_SKIP_BYTES( 29 * 2 ), |
| FT_FRAME_ULONG_LE ( lfanew ), |
| FT_FRAME_END |
| }; |
| |
| static const FT_Frame_Field winne_header_fields[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE WinNE_HeaderRec |
| |
| FT_FRAME_START( 40 ), |
| FT_FRAME_USHORT_LE ( magic ), |
| FT_FRAME_SKIP_BYTES( 34 ), |
| FT_FRAME_USHORT_LE ( resource_tab_offset ), |
| FT_FRAME_USHORT_LE ( rname_tab_offset ), |
| FT_FRAME_END |
| }; |
| |
| static const FT_Frame_Field winpe32_header_fields[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE WinPE32_HeaderRec |
| |
| FT_FRAME_START( 248 ), |
| FT_FRAME_ULONG_LE ( magic ), /* PE00 */ |
| FT_FRAME_USHORT_LE ( machine ), /* 0x014c - i386 */ |
| FT_FRAME_USHORT_LE ( number_of_sections ), |
| FT_FRAME_SKIP_BYTES( 12 ), |
| FT_FRAME_USHORT_LE ( size_of_optional_header ), |
| FT_FRAME_SKIP_BYTES( 2 ), |
| FT_FRAME_USHORT_LE ( magic32 ), /* 0x10b */ |
| FT_FRAME_SKIP_BYTES( 110 ), |
| FT_FRAME_ULONG_LE ( rsrc_virtual_address ), |
| FT_FRAME_ULONG_LE ( rsrc_size ), |
| FT_FRAME_SKIP_BYTES( 104 ), |
| FT_FRAME_END |
| }; |
| |
| static const FT_Frame_Field winpe32_section_fields[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE WinPE32_SectionRec |
| |
| FT_FRAME_START( 40 ), |
| FT_FRAME_BYTES ( name, 8 ), |
| FT_FRAME_SKIP_BYTES( 4 ), |
| FT_FRAME_ULONG_LE ( virtual_address ), |
| FT_FRAME_ULONG_LE ( size_of_raw_data ), |
| FT_FRAME_ULONG_LE ( pointer_to_raw_data ), |
| FT_FRAME_SKIP_BYTES( 16 ), |
| FT_FRAME_END |
| }; |
| |
| static const FT_Frame_Field winpe_rsrc_dir_fields[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE WinPE_RsrcDirRec |
| |
| FT_FRAME_START( 16 ), |
| FT_FRAME_ULONG_LE ( characteristics ), |
| FT_FRAME_ULONG_LE ( time_date_stamp ), |
| FT_FRAME_USHORT_LE( major_version ), |
| FT_FRAME_USHORT_LE( minor_version ), |
| FT_FRAME_USHORT_LE( number_of_named_entries ), |
| FT_FRAME_USHORT_LE( number_of_id_entries ), |
| FT_FRAME_END |
| }; |
| |
| static const FT_Frame_Field winpe_rsrc_dir_entry_fields[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE WinPE_RsrcDirEntryRec |
| |
| FT_FRAME_START( 8 ), |
| FT_FRAME_ULONG_LE( name ), |
| FT_FRAME_ULONG_LE( offset ), |
| FT_FRAME_END |
| }; |
| |
| static const FT_Frame_Field winpe_rsrc_data_entry_fields[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE WinPE_RsrcDataEntryRec |
| |
| FT_FRAME_START( 16 ), |
| FT_FRAME_ULONG_LE( offset_to_data ), |
| FT_FRAME_ULONG_LE( size ), |
| FT_FRAME_ULONG_LE( code_page ), |
| FT_FRAME_ULONG_LE( reserved ), |
| FT_FRAME_END |
| }; |
| |
| static const FT_Frame_Field winfnt_header_fields[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE FT_WinFNT_HeaderRec |
| |
| FT_FRAME_START( 148 ), |
| FT_FRAME_USHORT_LE( version ), |
| FT_FRAME_ULONG_LE ( file_size ), |
| FT_FRAME_BYTES ( copyright, 60 ), |
| FT_FRAME_USHORT_LE( file_type ), |
| FT_FRAME_USHORT_LE( nominal_point_size ), |
| FT_FRAME_USHORT_LE( vertical_resolution ), |
| FT_FRAME_USHORT_LE( horizontal_resolution ), |
| FT_FRAME_USHORT_LE( ascent ), |
| FT_FRAME_USHORT_LE( internal_leading ), |
| FT_FRAME_USHORT_LE( external_leading ), |
| FT_FRAME_BYTE ( italic ), |
| FT_FRAME_BYTE ( underline ), |
| FT_FRAME_BYTE ( strike_out ), |
| FT_FRAME_USHORT_LE( weight ), |
| FT_FRAME_BYTE ( charset ), |
| FT_FRAME_USHORT_LE( pixel_width ), |
| FT_FRAME_USHORT_LE( pixel_height ), |
| FT_FRAME_BYTE ( pitch_and_family ), |
| FT_FRAME_USHORT_LE( avg_width ), |
| FT_FRAME_USHORT_LE( max_width ), |
| FT_FRAME_BYTE ( first_char ), |
| FT_FRAME_BYTE ( last_char ), |
| FT_FRAME_BYTE ( default_char ), |
| FT_FRAME_BYTE ( break_char ), |
| FT_FRAME_USHORT_LE( bytes_per_row ), |
| FT_FRAME_ULONG_LE ( device_offset ), |
| FT_FRAME_ULONG_LE ( face_name_offset ), |
| FT_FRAME_ULONG_LE ( bits_pointer ), |
| FT_FRAME_ULONG_LE ( bits_offset ), |
| FT_FRAME_BYTE ( reserved ), |
| FT_FRAME_ULONG_LE ( flags ), |
| FT_FRAME_USHORT_LE( A_space ), |
| FT_FRAME_USHORT_LE( B_space ), |
| FT_FRAME_USHORT_LE( C_space ), |
| FT_FRAME_ULONG_LE ( color_table_offset ), |
| FT_FRAME_BYTES ( reserved1, 16 ), |
| FT_FRAME_END |
| }; |
| |
| |
| static void |
| fnt_font_done( FNT_Face face ) |
| { |
| FT_Memory memory = FT_FACE( face )->memory; |
| FT_Stream stream = FT_FACE( face )->stream; |
| FNT_Font font = face->font; |
| |
| |
| if ( !font ) |
| return; |
| |
| if ( font->fnt_frame ) |
| FT_FRAME_RELEASE( font->fnt_frame ); |
| FT_FREE( font->family_name ); |
| |
| FT_FREE( font ); |
| face->font = 0; |
| } |
| |
| |
| static FT_Error |
| fnt_font_load( FNT_Font font, |
| FT_Stream stream ) |
| { |
| FT_Error error; |
| FT_WinFNT_Header header = &font->header; |
| FT_Bool new_format; |
| FT_UInt size; |
| |
| |
| /* first of all, read the FNT header */ |
| if ( FT_STREAM_SEEK( font->offset ) || |
| FT_STREAM_READ_FIELDS( winfnt_header_fields, header ) ) |
| goto Exit; |
| |
| /* check header */ |
| if ( header->version != 0x200 && |
| header->version != 0x300 ) |
| { |
| FT_TRACE2(( "[not a valid FNT file]\n" )); |
| error = FNT_Err_Unknown_File_Format; |
| goto Exit; |
| } |
| |
| new_format = FT_BOOL( font->header.version == 0x300 ); |
| size = new_format ? 148 : 118; |
| |
| if ( header->file_size < size ) |
| { |
| FT_TRACE2(( "[not a valid FNT file]\n" )); |
| error = FNT_Err_Unknown_File_Format; |
| goto Exit; |
| } |
| |
| /* Version 2 doesn't have these fields */ |
| if ( header->version == 0x200 ) |
| { |
| header->flags = 0; |
| header->A_space = 0; |
| header->B_space = 0; |
| header->C_space = 0; |
| |
| header->color_table_offset = 0; |
| } |
| |
| if ( header->file_type & 1 ) |
| { |
| FT_TRACE2(( "[can't handle vector FNT fonts]\n" )); |
| error = FNT_Err_Unknown_File_Format; |
| goto Exit; |
| } |
| |
| /* this is a FNT file/table; extract its frame */ |
| if ( FT_STREAM_SEEK( font->offset ) || |
| FT_FRAME_EXTRACT( header->file_size, font->fnt_frame ) ) |
| goto Exit; |
| |
| Exit: |
| return error; |
| } |
| |
| |
| static FT_Error |
| fnt_face_get_dll_font( FNT_Face face, |
| FT_Int face_index ) |
| { |
| FT_Error error; |
| FT_Stream stream = FT_FACE( face )->stream; |
| FT_Memory memory = FT_FACE( face )->memory; |
| WinMZ_HeaderRec mz_header; |
| |
| |
| face->font = 0; |
| |
| /* does it begin with an MZ header? */ |
| if ( FT_STREAM_SEEK( 0 ) || |
| FT_STREAM_READ_FIELDS( winmz_header_fields, &mz_header ) ) |
| goto Exit; |
| |
| error = FNT_Err_Unknown_File_Format; |
| if ( mz_header.magic == WINFNT_MZ_MAGIC ) |
| { |
| /* yes, now look for an NE header in the file */ |
| WinNE_HeaderRec ne_header; |
| |
| |
| FT_TRACE2(( "MZ signature found\n" )); |
| |
| if ( FT_STREAM_SEEK( mz_header.lfanew ) || |
| FT_STREAM_READ_FIELDS( winne_header_fields, &ne_header ) ) |
| goto Exit; |
| |
| error = FNT_Err_Unknown_File_Format; |
| if ( ne_header.magic == WINFNT_NE_MAGIC ) |
| { |
| /* good, now look into the resource table for each FNT resource */ |
| FT_ULong res_offset = mz_header.lfanew + |
| ne_header.resource_tab_offset; |
| FT_UShort size_shift; |
| FT_UShort font_count = 0; |
| FT_ULong font_offset = 0; |
| |
| |
| FT_TRACE2(( "NE signature found\n" )); |
| |
| if ( FT_STREAM_SEEK( res_offset ) || |
| FT_FRAME_ENTER( ne_header.rname_tab_offset - |
| ne_header.resource_tab_offset ) ) |
| goto Exit; |
| |
| size_shift = FT_GET_USHORT_LE(); |
| |
| for (;;) |
| { |
| FT_UShort type_id, count; |
| |
| |
| type_id = FT_GET_USHORT_LE(); |
| if ( !type_id ) |
| break; |
| |
| count = FT_GET_USHORT_LE(); |
| |
| if ( type_id == 0x8008U ) |
| { |
| font_count = count; |
| font_offset = (FT_ULong)( FT_STREAM_POS() + 4 + |
| ( stream->cursor - stream->limit ) ); |
| break; |
| } |
| |
| stream->cursor += 4 + count * 12; |
| } |
| |
| FT_FRAME_EXIT(); |
| |
| if ( !font_count || !font_offset ) |
| { |
| FT_TRACE2(( "this file doesn't contain any FNT resources!\n" )); |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| } |
| |
| /* loading `winfnt_header_fields' needs at least 118 bytes; */ |
| /* use this as a rough measure to check the expected font size */ |
| if ( font_count * 118UL > stream->size ) |
| { |
| FT_TRACE2(( "invalid number of faces\n" )); |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| } |
| |
| face->root.num_faces = font_count; |
| |
| if ( face_index >= font_count ) |
| { |
| error = FNT_Err_Bad_Argument; |
| goto Exit; |
| } |
| |
| if ( FT_NEW( face->font ) ) |
| goto Exit; |
| |
| if ( FT_STREAM_SEEK( font_offset + face_index * 12 ) || |
| FT_FRAME_ENTER( 12 ) ) |
| goto Fail; |
| |
| face->font->offset = (FT_ULong)FT_GET_USHORT_LE() << size_shift; |
| face->font->fnt_size = (FT_ULong)FT_GET_USHORT_LE() << size_shift; |
| |
| stream->cursor += 8; |
| |
| FT_FRAME_EXIT(); |
| |
| error = fnt_font_load( face->font, stream ); |
| } |
| else if ( ne_header.magic == WINFNT_PE_MAGIC ) |
| { |
| WinPE32_HeaderRec pe32_header; |
| WinPE32_SectionRec pe32_section; |
| WinPE_RsrcDirRec root_dir, name_dir, lang_dir; |
| WinPE_RsrcDirEntryRec dir_entry1, dir_entry2, dir_entry3; |
| WinPE_RsrcDataEntryRec data_entry; |
| |
| FT_Long root_dir_offset, name_dir_offset, lang_dir_offset; |
| FT_UShort i, j, k; |
| |
| |
| FT_TRACE2(( "PE signature found\n" )); |
| |
| if ( FT_STREAM_SEEK( mz_header.lfanew ) || |
| FT_STREAM_READ_FIELDS( winpe32_header_fields, &pe32_header ) ) |
| goto Exit; |
| |
| FT_TRACE2(( "magic %04lx, machine %02x, number_of_sections %u, " |
| "size_of_optional_header %02x\n" |
| "magic32 %02x, rsrc_virtual_address %04lx, " |
| "rsrc_size %04lx\n", |
| pe32_header.magic, pe32_header.machine, |
| pe32_header.number_of_sections, |
| pe32_header.size_of_optional_header, |
| pe32_header.magic32, pe32_header.rsrc_virtual_address, |
| pe32_header.rsrc_size )); |
| |
| if ( pe32_header.magic != WINFNT_PE_MAGIC /* check full signature */ || |
| pe32_header.machine != 0x014c /* i386 */ || |
| pe32_header.size_of_optional_header != 0xe0 /* FIXME */ || |
| pe32_header.magic32 != 0x10b ) |
| { |
| FT_TRACE2(( "this file has an invalid PE header\n" )); |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| } |
| |
| face->root.num_faces = 0; |
| |
| for ( i = 0; i < pe32_header.number_of_sections; i++ ) |
| { |
| if ( FT_STREAM_READ_FIELDS( winpe32_section_fields, |
| &pe32_section ) ) |
| goto Exit; |
| |
| FT_TRACE2(( "name %.8s, va %04lx, size %04lx, offset %04lx\n", |
| pe32_section.name, pe32_section.virtual_address, |
| pe32_section.size_of_raw_data, |
| pe32_section.pointer_to_raw_data )); |
| |
| if ( pe32_header.rsrc_virtual_address == |
| pe32_section.virtual_address ) |
| goto Found_rsrc_section; |
| } |
| |
| FT_TRACE2(( "this file doesn't contain any resources\n" )); |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| |
| Found_rsrc_section: |
| FT_TRACE2(( "found resources section %.8s\n", pe32_section.name )); |
| |
| if ( FT_STREAM_SEEK( pe32_section.pointer_to_raw_data ) || |
| FT_STREAM_READ_FIELDS( winpe_rsrc_dir_fields, &root_dir ) ) |
| goto Exit; |
| |
| root_dir_offset = pe32_section.pointer_to_raw_data; |
| |
| for ( i = 0; i < root_dir.number_of_named_entries + |
| root_dir.number_of_id_entries; i++ ) |
| { |
| if ( FT_STREAM_SEEK( root_dir_offset + 16 + i * 8 ) || |
| FT_STREAM_READ_FIELDS( winpe_rsrc_dir_entry_fields, |
| &dir_entry1 ) ) |
| goto Exit; |
| |
| if ( !(dir_entry1.offset & 0x80000000UL ) /* DataIsDirectory */ ) |
| { |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| } |
| |
| dir_entry1.offset &= ~0x80000000UL; |
| |
| name_dir_offset = pe32_section.pointer_to_raw_data + |
| dir_entry1.offset; |
| |
| if ( FT_STREAM_SEEK( pe32_section.pointer_to_raw_data + |
| dir_entry1.offset ) || |
| FT_STREAM_READ_FIELDS( winpe_rsrc_dir_fields, &name_dir ) ) |
| goto Exit; |
| |
| for ( j = 0; j < name_dir.number_of_named_entries + |
| name_dir.number_of_id_entries; j++ ) |
| { |
| if ( FT_STREAM_SEEK( name_dir_offset + 16 + j * 8 ) || |
| FT_STREAM_READ_FIELDS( winpe_rsrc_dir_entry_fields, |
| &dir_entry2 ) ) |
| goto Exit; |
| |
| if ( !(dir_entry2.offset & 0x80000000UL ) /* DataIsDirectory */ ) |
| { |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| } |
| |
| dir_entry2.offset &= ~0x80000000UL; |
| |
| lang_dir_offset = pe32_section.pointer_to_raw_data + |
| dir_entry2.offset; |
| |
| if ( FT_STREAM_SEEK( pe32_section.pointer_to_raw_data + |
| dir_entry2.offset ) || |
| FT_STREAM_READ_FIELDS( winpe_rsrc_dir_fields, &lang_dir ) ) |
| goto Exit; |
| |
| for ( k = 0; k < lang_dir.number_of_named_entries + |
| lang_dir.number_of_id_entries; k++ ) |
| { |
| if ( FT_STREAM_SEEK( lang_dir_offset + 16 + k * 8 ) || |
| FT_STREAM_READ_FIELDS( winpe_rsrc_dir_entry_fields, |
| &dir_entry3 ) ) |
| goto Exit; |
| |
| if ( dir_entry2.offset & 0x80000000UL /* DataIsDirectory */ ) |
| { |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| } |
| |
| if ( dir_entry1.name == 8 /* RT_FONT */ ) |
| { |
| if ( FT_STREAM_SEEK( root_dir_offset + dir_entry3.offset ) || |
| FT_STREAM_READ_FIELDS( winpe_rsrc_data_entry_fields, |
| &data_entry ) ) |
| goto Exit; |
| |
| FT_TRACE2(( "found font #%lu, offset %04lx, " |
| "size %04lx, cp %lu\n", |
| dir_entry2.name, |
| pe32_section.pointer_to_raw_data + |
| data_entry.offset_to_data - |
| pe32_section.virtual_address, |
| data_entry.size, data_entry.code_page )); |
| |
| if ( face_index == face->root.num_faces ) |
| { |
| if ( FT_NEW( face->font ) ) |
| goto Exit; |
| |
| face->font->offset = pe32_section.pointer_to_raw_data + |
| data_entry.offset_to_data - |
| pe32_section.virtual_address; |
| face->font->fnt_size = data_entry.size; |
| |
| error = fnt_font_load( face->font, stream ); |
| if ( error ) |
| { |
| FT_TRACE2(( "font #%lu load error %d\n", |
| dir_entry2.name, error )); |
| goto Fail; |
| } |
| else |
| FT_TRACE2(( "font #%lu successfully loaded\n", |
| dir_entry2.name )); |
| } |
| |
| face->root.num_faces++; |
| } |
| } |
| } |
| } |
| } |
| |
| if ( !face->root.num_faces ) |
| { |
| FT_TRACE2(( "this file doesn't contain any RT_FONT resources\n" )); |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| } |
| |
| if ( face_index >= face->root.num_faces ) |
| { |
| error = FNT_Err_Bad_Argument; |
| goto Exit; |
| } |
| } |
| |
| Fail: |
| if ( error ) |
| fnt_font_done( face ); |
| |
| Exit: |
| return error; |
| } |
| |
| |
| typedef struct FNT_CMapRec_ |
| { |
| FT_CMapRec cmap; |
| FT_UInt32 first; |
| FT_UInt32 count; |
| |
| } FNT_CMapRec, *FNT_CMap; |
| |
| |
| static FT_Error |
| fnt_cmap_init( FNT_CMap cmap ) |
| { |
| FNT_Face face = (FNT_Face)FT_CMAP_FACE( cmap ); |
| FNT_Font font = face->font; |
| |
| |
| cmap->first = (FT_UInt32) font->header.first_char; |
| cmap->count = (FT_UInt32)( font->header.last_char - cmap->first + 1 ); |
| |
| return 0; |
| } |
| |
| |
| static FT_UInt |
| fnt_cmap_char_index( FNT_CMap cmap, |
| FT_UInt32 char_code ) |
| { |
| FT_UInt gindex = 0; |
| |
| |
| char_code -= cmap->first; |
| if ( char_code < cmap->count ) |
| gindex = char_code + 1; /* we artificially increase the glyph index; */ |
| /* FNT_Load_Glyph reverts to the right one */ |
| return gindex; |
| } |
| |
| |
| static FT_UInt |
| fnt_cmap_char_next( FNT_CMap cmap, |
| FT_UInt32 *pchar_code ) |
| { |
| FT_UInt gindex = 0; |
| FT_UInt32 result = 0; |
| FT_UInt32 char_code = *pchar_code + 1; |
| |
| |
| if ( char_code <= cmap->first ) |
| { |
| result = cmap->first; |
| gindex = 1; |
| } |
| else |
| { |
| char_code -= cmap->first; |
| if ( char_code < cmap->count ) |
| { |
| result = cmap->first + char_code; |
| gindex = char_code + 1; |
| } |
| } |
| |
| *pchar_code = result; |
| return gindex; |
| } |
| |
| |
| static const FT_CMap_ClassRec fnt_cmap_class_rec = |
| { |
| sizeof ( FNT_CMapRec ), |
| |
| (FT_CMap_InitFunc) fnt_cmap_init, |
| (FT_CMap_DoneFunc) NULL, |
| (FT_CMap_CharIndexFunc)fnt_cmap_char_index, |
| (FT_CMap_CharNextFunc) fnt_cmap_char_next |
| }; |
| |
| static FT_CMap_Class const fnt_cmap_class = &fnt_cmap_class_rec; |
| |
| |
| static void |
| FNT_Face_Done( FNT_Face face ) |
| { |
| if ( face ) |
| { |
| FT_Memory memory = FT_FACE_MEMORY( face ); |
| |
| |
| fnt_font_done( face ); |
| |
| FT_FREE( face->root.available_sizes ); |
| face->root.num_fixed_sizes = 0; |
| } |
| } |
| |
| |
| static FT_Error |
| FNT_Face_Init( FT_Stream stream, |
| FNT_Face face, |
| FT_Int face_index, |
| FT_Int num_params, |
| FT_Parameter* params ) |
| { |
| FT_Error error; |
| FT_Memory memory = FT_FACE_MEMORY( face ); |
| |
| FT_UNUSED( num_params ); |
| FT_UNUSED( params ); |
| |
| |
| /* try to load font from a DLL */ |
| error = fnt_face_get_dll_font( face, face_index ); |
| if ( error == FNT_Err_Unknown_File_Format ) |
| { |
| /* this didn't work; try to load a single FNT font */ |
| FNT_Font font; |
| |
| |
| if ( face_index > 0 ) |
| { |
| error = FNT_Err_Bad_Argument; |
| goto Exit; |
| } |
| |
| if ( FT_NEW( face->font ) ) |
| goto Exit; |
| |
| face->root.num_faces = 1; |
| |
| font = face->font; |
| font->offset = 0; |
| font->fnt_size = stream->size; |
| |
| error = fnt_font_load( font, stream ); |
| } |
| |
| if ( error ) |
| goto Fail; |
| |
| /* we now need to fill the root FT_Face fields */ |
| /* with relevant information */ |
| { |
| FT_Face root = FT_FACE( face ); |
| FNT_Font font = face->font; |
| FT_PtrDist family_size; |
| |
| |
| root->face_flags = FT_FACE_FLAG_FIXED_SIZES | |
| FT_FACE_FLAG_HORIZONTAL; |
| |
| if ( font->header.avg_width == font->header.max_width ) |
| root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; |
| |
| if ( font->header.italic ) |
| root->style_flags |= FT_STYLE_FLAG_ITALIC; |
| |
| if ( font->header.weight >= 800 ) |
| root->style_flags |= FT_STYLE_FLAG_BOLD; |
| |
| /* set up the `fixed_sizes' array */ |
| if ( FT_NEW_ARRAY( root->available_sizes, 1 ) ) |
| goto Fail; |
| |
| root->num_fixed_sizes = 1; |
| |
| { |
| FT_Bitmap_Size* bsize = root->available_sizes; |
| FT_UShort x_res, y_res; |
| |
| |
| bsize->width = font->header.avg_width; |
| bsize->height = (FT_Short)( |
| font->header.pixel_height + font->header.external_leading ); |
| bsize->size = font->header.nominal_point_size << 6; |
| |
| x_res = font->header.horizontal_resolution; |
| if ( !x_res ) |
| x_res = 72; |
| |
| y_res = font->header.vertical_resolution; |
| if ( !y_res ) |
| y_res = 72; |
| |
| bsize->y_ppem = FT_MulDiv( bsize->size, y_res, 72 ); |
| bsize->y_ppem = FT_PIX_ROUND( bsize->y_ppem ); |
| |
| /* |
| * this reads: |
| * |
| * the nominal height is larger than the bbox's height |
| * |
| * => nominal_point_size contains incorrect value; |
| * use pixel_height as the nominal height |
| */ |
| if ( bsize->y_ppem > font->header.pixel_height << 6 ) |
| { |
| FT_TRACE2(( "use pixel_height as the nominal height\n" )); |
| |
| bsize->y_ppem = font->header.pixel_height << 6; |
| bsize->size = FT_MulDiv( bsize->y_ppem, 72, y_res ); |
| } |
| |
| bsize->x_ppem = FT_MulDiv( bsize->size, x_res, 72 ); |
| bsize->x_ppem = FT_PIX_ROUND( bsize->x_ppem ); |
| } |
| |
| { |
| FT_CharMapRec charmap; |
| |
| |
| charmap.encoding = FT_ENCODING_NONE; |
| charmap.platform_id = 0; |
| charmap.encoding_id = 0; |
| charmap.face = root; |
| |
| if ( font->header.charset == FT_WinFNT_ID_MAC ) |
| { |
| charmap.encoding = FT_ENCODING_APPLE_ROMAN; |
| charmap.platform_id = 1; |
| /* charmap.encoding_id = 0; */ |
| } |
| |
| error = FT_CMap_New( fnt_cmap_class, |
| NULL, |
| &charmap, |
| NULL ); |
| if ( error ) |
| goto Fail; |
| |
| /* Select default charmap */ |
| if ( root->num_charmaps ) |
| root->charmap = root->charmaps[0]; |
| } |
| |
| /* setup remaining flags */ |
| |
| /* reserve one slot for the .notdef glyph at index 0 */ |
| root->num_glyphs = font->header.last_char - |
| font->header.first_char + 1 + 1; |
| |
| if ( font->header.face_name_offset >= font->header.file_size ) |
| { |
| FT_TRACE2(( "invalid family name offset!\n" )); |
| error = FNT_Err_Invalid_File_Format; |
| goto Fail; |
| } |
| family_size = font->header.file_size - font->header.face_name_offset; |
| /* Some broken fonts don't delimit the face name with a final */ |
| /* NULL byte -- the frame is erroneously one byte too small. */ |
| /* We thus allocate one more byte, setting it explicitly to */ |
| /* zero. */ |
| if ( FT_ALLOC( font->family_name, family_size + 1 ) ) |
| goto Fail; |
| |
| FT_MEM_COPY( font->family_name, |
| font->fnt_frame + font->header.face_name_offset, |
| family_size ); |
| |
| font->family_name[family_size] = '\0'; |
| |
| if ( FT_REALLOC( font->family_name, |
| family_size, |
| ft_strlen( font->family_name ) + 1 ) ) |
| goto Fail; |
| |
| root->family_name = font->family_name; |
| root->style_name = (char *)"Regular"; |
| |
| if ( root->style_flags & FT_STYLE_FLAG_BOLD ) |
| { |
| if ( root->style_flags & FT_STYLE_FLAG_ITALIC ) |
| root->style_name = (char *)"Bold Italic"; |
| else |
| root->style_name = (char *)"Bold"; |
| } |
| else if ( root->style_flags & FT_STYLE_FLAG_ITALIC ) |
| root->style_name = (char *)"Italic"; |
| } |
| goto Exit; |
| |
| Fail: |
| FNT_Face_Done( face ); |
| |
| Exit: |
| return error; |
| } |
| |
| |
| static FT_Error |
| FNT_Size_Select( FT_Size size ) |
| { |
| FNT_Face face = (FNT_Face)size->face; |
| FT_WinFNT_Header header = &face->font->header; |
| |
| |
| FT_Select_Metrics( size->face, 0 ); |
| |
| size->metrics.ascender = header->ascent * 64; |
| size->metrics.descender = -( header->pixel_height - |
| header->ascent ) * 64; |
| size->metrics.max_advance = header->max_width * 64; |
| |
| return FNT_Err_Ok; |
| } |
| |
| |
| static FT_Error |
| FNT_Size_Request( FT_Size size, |
| FT_Size_Request req ) |
| { |
| FNT_Face face = (FNT_Face)size->face; |
| FT_WinFNT_Header header = &face->font->header; |
| FT_Bitmap_Size* bsize = size->face->available_sizes; |
| FT_Error error = FNT_Err_Invalid_Pixel_Size; |
| FT_Long height; |
| |
| |
| height = FT_REQUEST_HEIGHT( req ); |
| height = ( height + 32 ) >> 6; |
| |
| switch ( req->type ) |
| { |
| case FT_SIZE_REQUEST_TYPE_NOMINAL: |
| if ( height == ( bsize->y_ppem + 32 ) >> 6 ) |
| error = FNT_Err_Ok; |
| break; |
| |
| case FT_SIZE_REQUEST_TYPE_REAL_DIM: |
| if ( height == header->pixel_height ) |
| error = FNT_Err_Ok; |
| break; |
| |
| default: |
| error = FNT_Err_Unimplemented_Feature; |
| break; |
| } |
| |
| if ( error ) |
| return error; |
| else |
| return FNT_Size_Select( size ); |
| } |
| |
| |
| static FT_Error |
| FNT_Load_Glyph( FT_GlyphSlot slot, |
| FT_Size size, |
| FT_UInt glyph_index, |
| FT_Int32 load_flags ) |
| { |
| FNT_Face face = (FNT_Face)FT_SIZE_FACE( size ); |
| FNT_Font font = face->font; |
| FT_Error error = FNT_Err_Ok; |
| FT_Byte* p; |
| FT_Int len; |
| FT_Bitmap* bitmap = &slot->bitmap; |
| FT_ULong offset; |
| FT_Bool new_format; |
| |
| FT_UNUSED( load_flags ); |
| |
| |
| if ( !face || !font || |
| glyph_index >= (FT_UInt)( FT_FACE( face )->num_glyphs ) ) |
| { |
| error = FNT_Err_Invalid_Argument; |
| goto Exit; |
| } |
| |
| if ( glyph_index > 0 ) |
| glyph_index--; /* revert to real index */ |
| else |
| glyph_index = font->header.default_char; /* the .notdef glyph */ |
| |
| new_format = FT_BOOL( font->header.version == 0x300 ); |
| len = new_format ? 6 : 4; |
| |
| /* jump to glyph entry */ |
| p = font->fnt_frame + ( new_format ? 148 : 118 ) + len * glyph_index; |
| |
| bitmap->width = FT_NEXT_SHORT_LE( p ); |
| |
| if ( new_format ) |
| offset = FT_NEXT_ULONG_LE( p ); |
| else |
| offset = FT_NEXT_USHORT_LE( p ); |
| |
| if ( offset >= font->header.file_size ) |
| { |
| FT_TRACE2(( "invalid FNT offset!\n" )); |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| } |
| |
| /* jump to glyph data */ |
| p = font->fnt_frame + /* font->header.bits_offset */ + offset; |
| |
| /* allocate and build bitmap */ |
| { |
| FT_Memory memory = FT_FACE_MEMORY( slot->face ); |
| FT_Int pitch = ( bitmap->width + 7 ) >> 3; |
| FT_Byte* column; |
| FT_Byte* write; |
| |
| |
| bitmap->pitch = pitch; |
| bitmap->rows = font->header.pixel_height; |
| bitmap->pixel_mode = FT_PIXEL_MODE_MONO; |
| |
| if ( offset + pitch * bitmap->rows >= font->header.file_size ) |
| { |
| FT_TRACE2(( "invalid bitmap width\n" )); |
| error = FNT_Err_Invalid_File_Format; |
| goto Exit; |
| } |
| |
| /* note: since glyphs are stored in columns and not in rows we */ |
| /* can't use ft_glyphslot_set_bitmap */ |
| if ( FT_ALLOC_MULT( bitmap->buffer, pitch, bitmap->rows ) ) |
| goto Exit; |
| |
| column = (FT_Byte*)bitmap->buffer; |
| |
| for ( ; pitch > 0; pitch--, column++ ) |
| { |
| FT_Byte* limit = p + bitmap->rows; |
| |
| |
| for ( write = column; p < limit; p++, write += bitmap->pitch ) |
| *write = *p; |
| } |
| } |
| |
| slot->internal->flags = FT_GLYPH_OWN_BITMAP; |
| slot->bitmap_left = 0; |
| slot->bitmap_top = font->header.ascent; |
| slot->format = FT_GLYPH_FORMAT_BITMAP; |
| |
| /* now set up metrics */ |
| slot->metrics.width = bitmap->width << 6; |
| slot->metrics.height = bitmap->rows << 6; |
| slot->metrics.horiAdvance = bitmap->width << 6; |
| slot->metrics.horiBearingX = 0; |
| slot->metrics.horiBearingY = slot->bitmap_top << 6; |
| |
| ft_synthesize_vertical_metrics( &slot->metrics, |
| bitmap->rows << 6 ); |
| |
| Exit: |
| return error; |
| } |
| |
| |
| static FT_Error |
| winfnt_get_header( FT_Face face, |
| FT_WinFNT_HeaderRec *aheader ) |
| { |
| FNT_Font font = ((FNT_Face)face)->font; |
| |
| |
| *aheader = font->header; |
| |
| return 0; |
| } |
| |
| |
| static const FT_Service_WinFntRec winfnt_service_rec = |
| { |
| winfnt_get_header |
| }; |
| |
| /* |
| * SERVICE LIST |
| * |
| */ |
| |
| static const FT_ServiceDescRec winfnt_services[] = |
| { |
| { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_WINFNT }, |
| { FT_SERVICE_ID_WINFNT, &winfnt_service_rec }, |
| { NULL, NULL } |
| }; |
| |
| |
| static FT_Module_Interface |
| winfnt_get_service( FT_Driver driver, |
| const FT_String* service_id ) |
| { |
| FT_UNUSED( driver ); |
| |
| return ft_service_list_lookup( winfnt_services, service_id ); |
| } |
| |
| |
| |
| |
| FT_CALLBACK_TABLE_DEF |
| const FT_Driver_ClassRec winfnt_driver_class = |
| { |
| { |
| FT_MODULE_FONT_DRIVER | |
| FT_MODULE_DRIVER_NO_OUTLINES, |
| sizeof ( FT_DriverRec ), |
| |
| "winfonts", |
| 0x10000L, |
| 0x20000L, |
| |
| 0, |
| |
| (FT_Module_Constructor)0, |
| (FT_Module_Destructor) 0, |
| (FT_Module_Requester) winfnt_get_service |
| }, |
| |
| sizeof( FNT_FaceRec ), |
| sizeof( FT_SizeRec ), |
| sizeof( FT_GlyphSlotRec ), |
| |
| (FT_Face_InitFunc) FNT_Face_Init, |
| (FT_Face_DoneFunc) FNT_Face_Done, |
| (FT_Size_InitFunc) 0, |
| (FT_Size_DoneFunc) 0, |
| (FT_Slot_InitFunc) 0, |
| (FT_Slot_DoneFunc) 0, |
| |
| #ifdef FT_CONFIG_OPTION_OLD_INTERNALS |
| ft_stub_set_char_sizes, |
| ft_stub_set_pixel_sizes, |
| #endif |
| (FT_Slot_LoadFunc) FNT_Load_Glyph, |
| |
| (FT_Face_GetKerningFunc) 0, |
| (FT_Face_AttachFunc) 0, |
| (FT_Face_GetAdvancesFunc) 0, |
| |
| (FT_Size_RequestFunc) FNT_Size_Request, |
| (FT_Size_SelectFunc) FNT_Size_Select |
| }; |
| |
| |
| /* END */ |
