| /* pcfread.c |
| |
| FreeType font driver for pcf fonts |
| |
| Copyright 2000-2001, 2002 by |
| Francesco Zappa Nardelli |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in |
| all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| THE SOFTWARE. |
| */ |
| |
| |
| #include <ft2build.h> |
| |
| #include FT_INTERNAL_DEBUG_H |
| #include FT_INTERNAL_STREAM_H |
| #include FT_INTERNAL_OBJECTS_H |
| |
| #include "pcf.h" |
| #include "pcfdriver.h" |
| |
| #include "pcferror.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_pcfread |
| |
| |
| #if defined( FT_DEBUG_LEVEL_TRACE ) |
| static const char* tableNames[] = |
| { |
| "prop", "accl", "mtrcs", "bmps", "imtrcs", |
| "enc", "swidth", "names", "accel" |
| }; |
| #endif |
| |
| |
| static |
| const FT_Frame_Field pcf_toc_header[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE PCF_TocRec |
| |
| FT_FRAME_START( 8 ), |
| FT_FRAME_ULONG_LE( version ), |
| FT_FRAME_ULONG_LE( count ), |
| FT_FRAME_END |
| }; |
| |
| |
| static |
| const FT_Frame_Field pcf_table_header[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE PCF_TableRec |
| |
| FT_FRAME_START( 16 ), |
| FT_FRAME_ULONG_LE( type ), |
| FT_FRAME_ULONG_LE( format ), |
| FT_FRAME_ULONG_LE( size ), |
| FT_FRAME_ULONG_LE( offset ), |
| FT_FRAME_END |
| }; |
| |
| |
| static FT_Error |
| pcf_read_TOC( FT_Stream stream, |
| PCF_Face face ) |
| { |
| FT_Error error; |
| PCF_Toc toc = &face->toc; |
| PCF_Table tables; |
| |
| FT_Memory memory = FT_FACE(face)->memory; |
| FT_UInt n; |
| |
| |
| if ( FT_STREAM_SEEK ( 0 ) || |
| FT_STREAM_READ_FIELDS ( pcf_toc_header, toc ) ) |
| return PCF_Err_Cannot_Open_Resource; |
| |
| if ( toc->version != PCF_FILE_VERSION ) |
| return PCF_Err_Invalid_File_Format; |
| |
| if ( FT_NEW_ARRAY( face->toc.tables, toc->count ) ) |
| return PCF_Err_Out_Of_Memory; |
| |
| tables = face->toc.tables; |
| for ( n = 0; n < toc->count; n++ ) |
| { |
| if ( FT_STREAM_READ_FIELDS( pcf_table_header, tables ) ) |
| goto Exit; |
| tables++; |
| } |
| |
| #if defined( FT_DEBUG_LEVEL_TRACE ) |
| |
| { |
| FT_UInt i, j; |
| const char* name = "?"; |
| |
| |
| FT_TRACE4(( "Tables count: %ld\n", face->toc.count )); |
| tables = face->toc.tables; |
| for ( i = 0; i < toc->count; i++ ) |
| { |
| for( j = 0; j < sizeof ( tableNames ) / sizeof ( tableNames[0] ); j++ ) |
| if ( tables[i].type == (FT_UInt)( 1 << j ) ) |
| name = tableNames[j]; |
| |
| FT_TRACE4(( "Table %d: type=%-6s format=0x%04lX " |
| "size=0x%06lX (%8ld) offset=0x%04lX\n", |
| i, name, |
| tables[i].format, |
| tables[i].size, tables[i].size, |
| tables[i].offset )); |
| } |
| } |
| |
| #endif |
| |
| return PCF_Err_Ok; |
| |
| Exit: |
| FT_FREE( face->toc.tables ); |
| return error; |
| } |
| |
| |
| static |
| const FT_Frame_Field pcf_metric_header[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE PCF_MetricRec |
| |
| FT_FRAME_START( 12 ), |
| FT_FRAME_SHORT_LE( leftSideBearing ), |
| FT_FRAME_SHORT_LE( rightSideBearing ), |
| FT_FRAME_SHORT_LE( characterWidth ), |
| FT_FRAME_SHORT_LE( ascent ), |
| FT_FRAME_SHORT_LE( descent ), |
| FT_FRAME_SHORT_LE( attributes ), |
| FT_FRAME_END |
| }; |
| |
| |
| static |
| const FT_Frame_Field pcf_metric_msb_header[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE PCF_MetricRec |
| |
| FT_FRAME_START( 12 ), |
| FT_FRAME_SHORT( leftSideBearing ), |
| FT_FRAME_SHORT( rightSideBearing ), |
| FT_FRAME_SHORT( characterWidth ), |
| FT_FRAME_SHORT( ascent ), |
| FT_FRAME_SHORT( descent ), |
| FT_FRAME_SHORT( attributes ), |
| FT_FRAME_END |
| }; |
| |
| |
| static |
| const FT_Frame_Field pcf_compressed_metric_header[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE PCF_Compressed_MetricRec |
| |
| FT_FRAME_START( 5 ), |
| FT_FRAME_BYTE( leftSideBearing ), |
| FT_FRAME_BYTE( rightSideBearing ), |
| FT_FRAME_BYTE( characterWidth ), |
| FT_FRAME_BYTE( ascent ), |
| FT_FRAME_BYTE( descent ), |
| FT_FRAME_END |
| }; |
| |
| |
| static FT_Error |
| pcf_get_metric( FT_Stream stream, |
| FT_ULong format, |
| PCF_Metric metric ) |
| { |
| FT_Error error = PCF_Err_Ok; |
| |
| |
| if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) |
| { |
| const FT_Frame_Field* fields; |
| |
| |
| /* parsing normal metrics */ |
| fields = PCF_BYTE_ORDER( format ) == MSBFirst |
| ? pcf_metric_msb_header |
| : pcf_metric_header; |
| |
| /* the following sets 'error' but doesn't return in case of failure */ |
| (void)FT_STREAM_READ_FIELDS( fields, metric ); |
| } |
| else |
| { |
| PCF_Compressed_MetricRec compr; |
| |
| |
| /* parsing compressed metrics */ |
| if ( FT_STREAM_READ_FIELDS( pcf_compressed_metric_header, &compr ) ) |
| goto Exit; |
| |
| metric->leftSideBearing = (FT_Short)( compr.leftSideBearing - 0x80 ); |
| metric->rightSideBearing = (FT_Short)( compr.rightSideBearing - 0x80 ); |
| metric->characterWidth = (FT_Short)( compr.characterWidth - 0x80 ); |
| metric->ascent = (FT_Short)( compr.ascent - 0x80 ); |
| metric->descent = (FT_Short)( compr.descent - 0x80 ); |
| metric->attributes = 0; |
| } |
| |
| Exit: |
| return error; |
| } |
| |
| |
| static FT_Error |
| pcf_seek_to_table_type( FT_Stream stream, |
| PCF_Table tables, |
| FT_Int ntables, |
| FT_ULong type, |
| FT_ULong *aformat, |
| FT_ULong *asize ) |
| { |
| FT_Error error = 0; |
| FT_Int i; |
| |
| |
| for ( i = 0; i < ntables; i++ ) |
| if ( tables[i].type == type ) |
| { |
| if ( stream->pos > tables[i].offset ) |
| return PCF_Err_Invalid_Stream_Skip; |
| |
| if ( FT_STREAM_SKIP( tables[i].offset - stream->pos ) ) |
| return PCF_Err_Invalid_Stream_Skip; |
| |
| *asize = tables[i].size; /* unused - to be removed */ |
| *aformat = tables[i].format; |
| |
| return PCF_Err_Ok; |
| } |
| |
| return PCF_Err_Invalid_File_Format; |
| } |
| |
| |
| static FT_Bool |
| pcf_has_table_type( PCF_Table tables, |
| FT_Int ntables, |
| FT_ULong type ) |
| { |
| FT_Int i; |
| |
| |
| for ( i = 0; i < ntables; i++ ) |
| if ( tables[i].type == type ) |
| return TRUE; |
| |
| return FALSE; |
| } |
| |
| |
| static |
| const FT_Frame_Field pcf_property_header[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE PCF_ParsePropertyRec |
| |
| FT_FRAME_START( 9 ), |
| FT_FRAME_LONG_LE( name ), |
| FT_FRAME_BYTE ( isString ), |
| FT_FRAME_LONG_LE( value ), |
| FT_FRAME_END |
| }; |
| |
| |
| static |
| const FT_Frame_Field pcf_property_msb_header[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE PCF_ParsePropertyRec |
| |
| FT_FRAME_START( 9 ), |
| FT_FRAME_LONG( name ), |
| FT_FRAME_BYTE( isString ), |
| FT_FRAME_LONG( value ), |
| FT_FRAME_END |
| }; |
| |
| |
| static PCF_Property |
| pcf_find_property( PCF_Face face, |
| const FT_String* prop ) |
| { |
| PCF_Property properties = face->properties; |
| FT_Bool found = 0; |
| int i; |
| |
| |
| for ( i = 0 ; i < face->nprops && !found; i++ ) |
| { |
| if ( !ft_strcmp( properties[i].name, prop ) ) |
| found = 1; |
| } |
| |
| if ( found ) |
| return properties + i - 1; |
| else |
| return NULL; |
| } |
| |
| |
| static FT_Error |
| pcf_get_properties( FT_Stream stream, |
| PCF_Face face ) |
| { |
| PCF_ParseProperty props = 0; |
| PCF_Property properties = 0; |
| FT_Int nprops, i; |
| FT_ULong format, size; |
| FT_Error error; |
| FT_Memory memory = FT_FACE(face)->memory; |
| FT_ULong string_size; |
| FT_String* strings = 0; |
| |
| |
| error = pcf_seek_to_table_type( stream, |
| face->toc.tables, |
| face->toc.count, |
| PCF_PROPERTIES, |
| &format, |
| &size ); |
| if ( error ) |
| goto Bail; |
| |
| if ( FT_READ_ULONG_LE( format ) ) |
| goto Bail; |
| |
| FT_TRACE4(( "get_prop: format = %ld\n", format )); |
| |
| if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) |
| goto Bail; |
| |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| (void)FT_READ_ULONG( nprops ); |
| else |
| (void)FT_READ_ULONG_LE( nprops ); |
| if ( error ) |
| goto Bail; |
| |
| FT_TRACE4(( "get_prop: nprop = %d\n", nprops )); |
| |
| if ( FT_NEW_ARRAY( props, nprops ) ) |
| goto Bail; |
| |
| for ( i = 0; i < nprops; i++ ) |
| { |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| { |
| if ( FT_STREAM_READ_FIELDS( pcf_property_msb_header, props + i ) ) |
| goto Bail; |
| } |
| else |
| { |
| if ( FT_STREAM_READ_FIELDS( pcf_property_header, props + i ) ) |
| goto Bail; |
| } |
| } |
| |
| /* pad the property array */ |
| /* */ |
| /* clever here - nprops is the same as the number of odd-units read, */ |
| /* as only isStringProp are odd length (Keith Packard) */ |
| /* */ |
| if ( nprops & 3 ) |
| { |
| i = 4 - ( nprops & 3 ); |
| FT_Stream_Skip( stream, i ); |
| } |
| |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| (void)FT_READ_ULONG( string_size ); |
| else |
| (void)FT_READ_ULONG_LE( string_size ); |
| if ( error ) |
| goto Bail; |
| |
| FT_TRACE4(( "get_prop: string_size = %ld\n", string_size )); |
| |
| if ( FT_NEW_ARRAY( strings, string_size ) ) |
| goto Bail; |
| |
| error = FT_Stream_Read( stream, (FT_Byte*)strings, string_size ); |
| if ( error ) |
| goto Bail; |
| |
| if ( FT_NEW_ARRAY( properties, nprops ) ) |
| goto Bail; |
| |
| for ( i = 0; i < nprops; i++ ) |
| { |
| /* XXX: make atom */ |
| if ( FT_NEW_ARRAY( properties[i].name, |
| ft_strlen( strings + props[i].name ) + 1 ) ) |
| goto Bail; |
| ft_strcpy( properties[i].name,strings + props[i].name ); |
| |
| properties[i].isString = props[i].isString; |
| |
| if ( props[i].isString ) |
| { |
| if ( FT_NEW_ARRAY( properties[i].value.atom, |
| ft_strlen( strings + props[i].value ) + 1 ) ) |
| goto Bail; |
| ft_strcpy( properties[i].value.atom, strings + props[i].value ); |
| } |
| else |
| properties[i].value.integer = props[i].value; |
| } |
| |
| face->properties = properties; |
| face->nprops = nprops; |
| |
| FT_FREE( props ); |
| FT_FREE( strings ); |
| |
| return PCF_Err_Ok; |
| |
| Bail: |
| FT_FREE( props ); |
| FT_FREE( strings ); |
| |
| return error; |
| } |
| |
| |
| static FT_Error |
| pcf_get_metrics( FT_Stream stream, |
| PCF_Face face ) |
| { |
| FT_Error error = PCF_Err_Ok; |
| FT_Memory memory = FT_FACE(face)->memory; |
| FT_ULong format = 0; |
| FT_ULong size = 0; |
| PCF_Metric metrics = 0; |
| int i; |
| int nmetrics = -1; |
| |
| |
| error = pcf_seek_to_table_type( stream, |
| face->toc.tables, |
| face->toc.count, |
| PCF_METRICS, |
| &format, |
| &size ); |
| if ( error ) |
| return error; |
| |
| error = FT_READ_ULONG_LE( format ); |
| |
| if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) && |
| !PCF_FORMAT_MATCH( format, PCF_COMPRESSED_METRICS ) ) |
| return PCF_Err_Invalid_File_Format; |
| |
| if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) |
| { |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| (void)FT_READ_ULONG( nmetrics ); |
| else |
| (void)FT_READ_ULONG_LE( nmetrics ); |
| } |
| else |
| { |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| (void)FT_READ_USHORT( nmetrics ); |
| else |
| (void)FT_READ_USHORT_LE( nmetrics ); |
| } |
| if ( error || nmetrics == -1 ) |
| return PCF_Err_Invalid_File_Format; |
| |
| face->nmetrics = nmetrics; |
| |
| if ( FT_NEW_ARRAY( face->metrics, nmetrics ) ) |
| return PCF_Err_Out_Of_Memory; |
| |
| metrics = face->metrics; |
| for ( i = 0; i < nmetrics; i++ ) |
| { |
| pcf_get_metric( stream, format, metrics + i ); |
| |
| metrics[i].bits = 0; |
| |
| FT_TRACE4(( "%d : width=%d, " |
| "lsb=%d, rsb=%d, ascent=%d, descent=%d, swidth=%d\n", |
| i, |
| ( metrics + i )->characterWidth, |
| ( metrics + i )->leftSideBearing, |
| ( metrics + i )->rightSideBearing, |
| ( metrics + i )->ascent, |
| ( metrics + i )->descent, |
| ( metrics + i )->attributes )); |
| |
| if ( error ) |
| break; |
| } |
| |
| if ( error ) |
| FT_FREE( face->metrics ); |
| return error; |
| } |
| |
| |
| static FT_Error |
| pcf_get_bitmaps( FT_Stream stream, |
| PCF_Face face ) |
| { |
| FT_Error error = PCF_Err_Ok; |
| FT_Memory memory = FT_FACE(face)->memory; |
| FT_Long* offsets; |
| FT_Long bitmapSizes[GLYPHPADOPTIONS]; |
| FT_ULong format, size; |
| int nbitmaps, i, sizebitmaps = 0; |
| char* bitmaps; |
| |
| |
| error = pcf_seek_to_table_type( stream, |
| face->toc.tables, |
| face->toc.count, |
| PCF_BITMAPS, |
| &format, |
| &size ); |
| if ( error ) |
| return error; |
| |
| error = FT_Stream_EnterFrame( stream, 8 ); |
| if ( error ) |
| return error; |
| |
| format = FT_GET_ULONG_LE(); |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| nbitmaps = FT_GET_ULONG(); |
| else |
| nbitmaps = FT_GET_ULONG_LE(); |
| |
| FT_Stream_ExitFrame( stream ); |
| |
| if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) |
| return PCF_Err_Invalid_File_Format; |
| |
| if ( nbitmaps != face->nmetrics ) |
| return PCF_Err_Invalid_File_Format; |
| |
| if ( FT_NEW_ARRAY( offsets, nbitmaps ) ) |
| return error; |
| |
| for ( i = 0; i < nbitmaps; i++ ) |
| { |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| (void)FT_READ_LONG( offsets[i] ); |
| else |
| (void)FT_READ_LONG_LE( offsets[i] ); |
| |
| FT_TRACE4(( "bitmap %d is at offset %ld\n", i, offsets[i] )); |
| } |
| if ( error ) |
| goto Bail; |
| |
| for ( i = 0; i < GLYPHPADOPTIONS; i++ ) |
| { |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| (void)FT_READ_LONG( bitmapSizes[i] ); |
| else |
| (void)FT_READ_LONG_LE( bitmapSizes[i] ); |
| if ( error ) |
| goto Bail; |
| |
| sizebitmaps = bitmapSizes[PCF_GLYPH_PAD_INDEX( format )]; |
| |
| FT_TRACE4(( "padding %d implies a size of %ld\n", i, bitmapSizes[i] )); |
| } |
| |
| FT_TRACE4(( " %d bitmaps, padding index %ld\n", |
| nbitmaps, |
| PCF_GLYPH_PAD_INDEX( format ) )); |
| FT_TRACE4(( "bitmap size = %d\n", sizebitmaps )); |
| |
| FT_UNUSED( sizebitmaps ); /* only used for debugging */ |
| |
| for ( i = 0; i < nbitmaps; i++ ) |
| face->metrics[i].bits = stream->pos + offsets[i]; |
| |
| face->bitmapsFormat = format; |
| |
| FT_FREE ( offsets ); |
| return error; |
| |
| Bail: |
| FT_FREE ( offsets ); |
| FT_FREE ( bitmaps ); |
| return error; |
| } |
| |
| |
| static FT_Error |
| pcf_get_encodings( FT_Stream stream, |
| PCF_Face face ) |
| { |
| FT_Error error = PCF_Err_Ok; |
| FT_Memory memory = FT_FACE(face)->memory; |
| FT_ULong format, size; |
| int firstCol, lastCol; |
| int firstRow, lastRow; |
| int nencoding, encodingOffset; |
| int i, j; |
| PCF_Encoding tmpEncoding, encoding = 0; |
| |
| |
| error = pcf_seek_to_table_type( stream, |
| face->toc.tables, |
| face->toc.count, |
| PCF_BDF_ENCODINGS, |
| &format, |
| &size ); |
| if ( error ) |
| return error; |
| |
| error = FT_Stream_EnterFrame( stream, 14 ); |
| if ( error ) |
| return error; |
| |
| format = FT_GET_ULONG_LE(); |
| |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| { |
| firstCol = FT_GET_SHORT(); |
| lastCol = FT_GET_SHORT(); |
| firstRow = FT_GET_SHORT(); |
| lastRow = FT_GET_SHORT(); |
| face->defaultChar = FT_GET_SHORT(); |
| } |
| else |
| { |
| firstCol = FT_GET_SHORT_LE(); |
| lastCol = FT_GET_SHORT_LE(); |
| firstRow = FT_GET_SHORT_LE(); |
| lastRow = FT_GET_SHORT_LE(); |
| face->defaultChar = FT_GET_SHORT_LE(); |
| } |
| |
| FT_Stream_ExitFrame( stream ); |
| |
| if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) |
| return PCF_Err_Invalid_File_Format; |
| |
| FT_TRACE4(( "enc: firstCol %d, lastCol %d, firstRow %d, lastRow %d\n", |
| firstCol, lastCol, firstRow, lastRow )); |
| |
| nencoding = ( lastCol - firstCol + 1 ) * ( lastRow - firstRow + 1 ); |
| |
| if ( FT_NEW_ARRAY( tmpEncoding, nencoding ) ) |
| return PCF_Err_Out_Of_Memory; |
| |
| error = FT_Stream_EnterFrame( stream, 2 * nencoding ); |
| if ( error ) |
| goto Bail; |
| |
| for ( i = 0, j = 0 ; i < nencoding; i++ ) |
| { |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| encodingOffset = FT_GET_SHORT(); |
| else |
| encodingOffset = FT_GET_SHORT_LE(); |
| |
| if ( encodingOffset != -1 ) |
| { |
| tmpEncoding[j].enc = ( ( ( i / ( lastCol - firstCol + 1 ) ) + |
| firstRow ) * 256 ) + |
| ( ( i % ( lastCol - firstCol + 1 ) ) + |
| firstCol ); |
| |
| tmpEncoding[j].glyph = (FT_Short)encodingOffset; |
| j++; |
| } |
| |
| FT_TRACE4(( "enc n. %d ; Uni %ld ; Glyph %d\n", |
| i, tmpEncoding[j - 1].enc, encodingOffset )); |
| } |
| FT_Stream_ExitFrame( stream ); |
| |
| if ( FT_NEW_ARRAY( encoding, j ) ) |
| goto Bail; |
| |
| for ( i = 0; i < j; i++ ) |
| { |
| encoding[i].enc = tmpEncoding[i].enc; |
| encoding[i].glyph = tmpEncoding[i].glyph; |
| } |
| |
| face->nencodings = j; |
| face->encodings = encoding; |
| FT_FREE( tmpEncoding ); |
| |
| return error; |
| |
| Bail: |
| FT_FREE( encoding ); |
| FT_FREE( tmpEncoding ); |
| return error; |
| } |
| |
| |
| static |
| const FT_Frame_Field pcf_accel_header[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE PCF_AccelRec |
| |
| FT_FRAME_START( 20 ), |
| FT_FRAME_BYTE ( noOverlap ), |
| FT_FRAME_BYTE ( constantMetrics ), |
| FT_FRAME_BYTE ( terminalFont ), |
| FT_FRAME_BYTE ( constantWidth ), |
| FT_FRAME_BYTE ( inkInside ), |
| FT_FRAME_BYTE ( inkMetrics ), |
| FT_FRAME_BYTE ( drawDirection ), |
| FT_FRAME_SKIP_BYTES( 1 ), |
| FT_FRAME_LONG_LE ( fontAscent ), |
| FT_FRAME_LONG_LE ( fontDescent ), |
| FT_FRAME_LONG_LE ( maxOverlap ), |
| FT_FRAME_END |
| }; |
| |
| |
| static |
| const FT_Frame_Field pcf_accel_msb_header[] = |
| { |
| #undef FT_STRUCTURE |
| #define FT_STRUCTURE PCF_AccelRec |
| |
| FT_FRAME_START( 20 ), |
| FT_FRAME_BYTE ( noOverlap ), |
| FT_FRAME_BYTE ( constantMetrics ), |
| FT_FRAME_BYTE ( terminalFont ), |
| FT_FRAME_BYTE ( constantWidth ), |
| FT_FRAME_BYTE ( inkInside ), |
| FT_FRAME_BYTE ( inkMetrics ), |
| FT_FRAME_BYTE ( drawDirection ), |
| FT_FRAME_SKIP_BYTES( 1 ), |
| FT_FRAME_LONG ( fontAscent ), |
| FT_FRAME_LONG ( fontDescent ), |
| FT_FRAME_LONG ( maxOverlap ), |
| FT_FRAME_END |
| }; |
| |
| |
| static FT_Error |
| pcf_get_accel( FT_Stream stream, |
| PCF_Face face, |
| FT_ULong type ) |
| { |
| FT_ULong format, size; |
| FT_Error error = PCF_Err_Ok; |
| PCF_Accel accel = &face->accel; |
| |
| |
| error = pcf_seek_to_table_type( stream, |
| face->toc.tables, |
| face->toc.count, |
| type, |
| &format, |
| &size ); |
| if ( error ) |
| goto Bail; |
| |
| error = FT_READ_ULONG_LE( format ); |
| |
| if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) && |
| !PCF_FORMAT_MATCH( format, PCF_ACCEL_W_INKBOUNDS ) ) |
| goto Bail; |
| |
| if ( PCF_BYTE_ORDER( format ) == MSBFirst ) |
| { |
| if ( FT_STREAM_READ_FIELDS( pcf_accel_msb_header, accel ) ) |
| goto Bail; |
| } |
| else |
| { |
| if ( FT_STREAM_READ_FIELDS( pcf_accel_header, accel ) ) |
| goto Bail; |
| } |
| |
| error = pcf_get_metric( stream, |
| format & ( ~PCF_FORMAT_MASK ), |
| &(accel->minbounds) ); |
| if ( error ) |
| goto Bail; |
| |
| error = pcf_get_metric( stream, |
| format & ( ~PCF_FORMAT_MASK ), |
| &(accel->maxbounds) ); |
| if ( error ) |
| goto Bail; |
| |
| if ( PCF_FORMAT_MATCH( format, PCF_ACCEL_W_INKBOUNDS ) ) |
| { |
| error = pcf_get_metric( stream, |
| format & ( ~PCF_FORMAT_MASK ), |
| &(accel->ink_minbounds) ); |
| if ( error ) |
| goto Bail; |
| |
| error = pcf_get_metric( stream, |
| format & ( ~PCF_FORMAT_MASK ), |
| &(accel->ink_maxbounds) ); |
| if ( error ) |
| goto Bail; |
| } |
| else |
| { |
| accel->ink_minbounds = accel->minbounds; /* I'm not sure about this */ |
| accel->ink_maxbounds = accel->maxbounds; |
| } |
| return error; |
| |
| Bail: |
| return error; |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| pcf_load_font( FT_Stream stream, |
| PCF_Face face ) |
| { |
| FT_Error error = PCF_Err_Ok; |
| FT_Memory memory = FT_FACE(face)->memory; |
| FT_Bool hasBDFAccelerators; |
| |
| |
| error = pcf_read_TOC( stream, face ); |
| if ( error ) |
| goto Exit; |
| |
| error = pcf_get_properties( stream, face ); |
| if ( error ) |
| goto Exit; |
| |
| /* Use the old accelerators if no BDF accelerators are in the file. */ |
| hasBDFAccelerators = pcf_has_table_type( face->toc.tables, |
| face->toc.count, |
| PCF_BDF_ACCELERATORS ); |
| if ( !hasBDFAccelerators ) |
| { |
| error = pcf_get_accel( stream, face, PCF_ACCELERATORS ); |
| if ( error ) |
| goto Exit; |
| } |
| |
| /* metrics */ |
| error = pcf_get_metrics( stream, face ); |
| if ( error ) |
| goto Exit; |
| |
| /* bitmaps */ |
| error = pcf_get_bitmaps( stream, face ); |
| if ( error ) |
| goto Exit; |
| |
| /* encodings */ |
| error = pcf_get_encodings( stream, face ); |
| if ( error ) |
| goto Exit; |
| |
| /* BDF style accelerators (i.e. bounds based on encoded glyphs) */ |
| if ( hasBDFAccelerators ) |
| { |
| error = pcf_get_accel( stream, face, PCF_BDF_ACCELERATORS ); |
| if ( error ) |
| goto Exit; |
| } |
| |
| /* XXX: TO DO: inkmetrics and glyph_names are missing */ |
| |
| /* now construct the face object */ |
| { |
| FT_Face root = FT_FACE( face ); |
| PCF_Property prop; |
| int size_set = 0; |
| |
| |
| root->num_faces = 1; |
| root->face_index = 0; |
| root->face_flags = FT_FACE_FLAG_FIXED_SIZES | |
| FT_FACE_FLAG_HORIZONTAL | |
| FT_FACE_FLAG_FAST_GLYPHS; |
| |
| if ( face->accel.constantWidth ) |
| root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; |
| |
| root->style_flags = 0; |
| prop = pcf_find_property( face, "SLANT" ); |
| if ( prop != NULL ) |
| if ( prop->isString ) |
| if ( ( *(prop->value.atom) == 'O' ) || |
| ( *(prop->value.atom) == 'I' ) ) |
| root->style_flags |= FT_STYLE_FLAG_ITALIC; |
| |
| prop = pcf_find_property( face, "WEIGHT_NAME" ); |
| if ( prop != NULL ) |
| if ( prop->isString ) |
| if ( *(prop->value.atom) == 'B' ) |
| root->style_flags |= FT_STYLE_FLAG_BOLD; |
| |
| 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"; |
| |
| prop = pcf_find_property( face, "FAMILY_NAME" ); |
| if ( prop != NULL ) |
| { |
| if ( prop->isString ) |
| { |
| int l = ft_strlen( prop->value.atom ) + 1; |
| |
| |
| if ( FT_NEW_ARRAY( root->family_name, l ) ) |
| goto Exit; |
| ft_strcpy( root->family_name, prop->value.atom ); |
| } |
| } |
| else |
| root->family_name = 0; |
| |
| root->num_glyphs = face->nmetrics; |
| |
| root->num_fixed_sizes = 1; |
| if ( FT_NEW_ARRAY( root->available_sizes, 1 ) ) |
| goto Exit; |
| |
| prop = pcf_find_property( face, "PIXEL_SIZE" ); |
| if ( prop != NULL ) |
| { |
| root->available_sizes->height = |
| root->available_sizes->width = (FT_Short)( prop->value.integer ); |
| |
| size_set = 1; |
| } |
| else |
| { |
| prop = pcf_find_property( face, "POINT_SIZE" ); |
| if ( prop != NULL ) |
| { |
| PCF_Property xres, yres, avgw; |
| |
| |
| xres = pcf_find_property( face, "RESOLUTION_X" ); |
| yres = pcf_find_property( face, "RESOLUTION_Y" ); |
| avgw = pcf_find_property( face, "AVERAGE_WIDTH" ); |
| |
| if ( ( yres != NULL ) && ( xres != NULL ) ) |
| { |
| root->available_sizes->height = |
| (FT_Short)( prop->value.integer * |
| yres->value.integer / 720 ); |
| |
| root->available_sizes->width = |
| (FT_Short)( prop->value.integer * |
| xres->value.integer / 720 ); |
| |
| size_set = 1; |
| } |
| } |
| } |
| |
| if (size_set == 0 ) |
| { |
| root->available_sizes->width = 12; |
| root->available_sizes->height = 12; |
| } |
| |
| /* set-up charset */ |
| { |
| PCF_Property charset_registry = 0, charset_encoding = 0; |
| |
| |
| charset_registry = pcf_find_property( face, "CHARSET_REGISTRY" ); |
| charset_encoding = pcf_find_property( face, "CHARSET_ENCODING" ); |
| |
| if ( ( charset_registry != NULL ) && |
| ( charset_encoding != NULL ) ) |
| { |
| if ( ( charset_registry->isString ) && |
| ( charset_encoding->isString ) ) |
| { |
| if ( FT_NEW_ARRAY( face->charset_encoding, |
| ft_strlen( charset_encoding->value.atom ) + 1 ) ) |
| goto Exit; |
| |
| if ( FT_NEW_ARRAY( face->charset_registry, |
| ft_strlen( charset_registry->value.atom ) + 1 ) ) |
| goto Exit; |
| |
| ft_strcpy( face->charset_registry, charset_registry->value.atom ); |
| ft_strcpy( face->charset_encoding, charset_encoding->value.atom ); |
| } |
| } |
| } |
| } |
| |
| Exit: |
| if ( error ) |
| { |
| /* this is done to respect the behaviour of the original */ |
| /* PCF font driver. */ |
| error = PCF_Err_Invalid_File_Format; |
| } |
| |
| return error; |
| } |
| |
| |
| /* END */ |
