+++ /dev/null
-/* pcfdriver.c
-
- FreeType font driver for pcf files
-
- Copyright (C) 2000-2001 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 "pcfutil.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_pcfdriver
-
-
- FT_LOCAL_DEF FT_Error
- PCF_Done_Face( PCF_Face face )
- {
- FT_Memory memory = FT_FACE_MEMORY( face );
- PCF_Property tmp = face->properties;
- int i;
-
-
- FREE( face->encodings );
- FREE( face->metrics );
-
- for ( i = 0; i < face->nprops; i++ )
- {
- FREE( tmp->name );
- if ( tmp->isString )
- FREE( tmp->value );
- }
- FREE( face->properties );
-
- FT_TRACE4(( "DONE_FACE!!!\n" ));
-
- return PCF_Err_Ok;
- }
-
-
- static FT_Error
- PCF_Init_Face( FT_Stream stream,
- PCF_Face face,
- FT_Int face_index,
- FT_Int num_params,
- FT_Parameter* params )
- {
- FT_Error error = PCF_Err_Ok;
-
- FT_UNUSED( num_params );
- FT_UNUSED( params );
- FT_UNUSED( face_index );
-
-
- error = pcf_load_font( stream, face );
- if ( error )
- goto Fail;
-
- return PCF_Err_Ok;
-
- Fail:
- FT_TRACE2(( "[not a valid PCF file]\n" ));
- PCF_Done_Face( face );
-
- return PCF_Err_Unknown_File_Format; /* error */
- }
-
-
- static FT_Error
- PCF_Set_Pixel_Size( FT_Size size )
- {
- PCF_Face face = (PCF_Face)FT_SIZE_FACE( size );
-
-
- FT_TRACE4(( "rec %d - pres %d\n", size->metrics.y_ppem,
- face->root.available_sizes->height ));
-
- if ( size->metrics.y_ppem == face->root.available_sizes->height )
- {
- size->metrics.ascender = face->accel.fontAscent << 6;
- size->metrics.descender = face->accel.fontDescent * (-64);
-#if 0
- size->metrics.height = face->accel.maxbounds.ascent << 6;
-#endif
- size->metrics.height = size->metrics.ascender -
- size->metrics.descender;
-
- return PCF_Err_Ok;
- }
- else
- {
- FT_TRACE4(( "size WRONG\n" ));
- return PCF_Err_Invalid_Pixel_Size;
- }
- }
-
-
- static FT_Error
- PCF_Load_Glyph( FT_GlyphSlot slot,
- FT_Size size,
- FT_UInt glyph_index,
- FT_Int load_flags )
- {
- PCF_Face face = (PCF_Face)FT_SIZE_FACE( size );
- FT_Error error = PCF_Err_Ok;
- FT_Memory memory = FT_FACE(face)->memory;
- FT_Bitmap* bitmap = &slot->bitmap;
- PCF_Metric metric;
- int bytes;
-
- FT_Stream stream = face->root.stream;
-
- FT_UNUSED( load_flags );
-
-
- FT_TRACE4(( "load_glyph %d ---", glyph_index ));
-
- if ( !face )
- {
- error = PCF_Err_Invalid_Argument;
- goto Exit;
- }
-
- metric = face->metrics + glyph_index;
-
- bitmap->rows = metric->ascent + metric->descent;
- bitmap->width = metric->rightSideBearing - metric->leftSideBearing;
- bitmap->num_grays = 1;
- bitmap->pixel_mode = ft_pixel_mode_mono;
-
- FT_TRACE6(( "BIT_ORDER %d ; BYTE_ORDER %d ; GLYPH_PAD %d\n",
- PCF_BIT_ORDER( face->bitmapsFormat ),
- PCF_BYTE_ORDER( face->bitmapsFormat ),
- PCF_GLYPH_PAD( face->bitmapsFormat ) ));
-
- switch ( PCF_GLYPH_PAD( face->bitmapsFormat ) )
- {
- case 1:
- bitmap->pitch = ( bitmap->width + 7 ) >> 3;
- break;
-
- case 2:
- bitmap->pitch = ( ( bitmap->width + 15 ) >> 4 ) << 1;
- break;
-
- case 4:
- bitmap->pitch = ( ( bitmap->width + 31 ) >> 5 ) << 2;
- break;
-
- case 8:
- bitmap->pitch = ( ( bitmap->width + 63 ) >> 6 ) << 3;
- break;
-
- default:
- return PCF_Err_Invalid_File_Format;
- }
-
- /* XXX: to do: are there cases that need repadding the bitmap? */
- bytes = bitmap->pitch * bitmap->rows;
-
- if ( ALLOC( bitmap->buffer, bytes ) )
- goto Exit;
-
- if ( FILE_Seek( metric->bits ) ||
- FILE_Read( bitmap->buffer, bytes ) )
- goto Exit;
-
- if ( PCF_BIT_ORDER( face->bitmapsFormat ) != MSBFirst )
- BitOrderInvert( bitmap->buffer,bytes );
-
- if ( ( PCF_BYTE_ORDER( face->bitmapsFormat ) !=
- PCF_BIT_ORDER( face->bitmapsFormat ) ) )
- {
- switch ( PCF_SCAN_UNIT( face->bitmapsFormat ) )
- {
- case 1:
- break;
-
- case 2:
- TwoByteSwap( bitmap->buffer, bytes );
- break;
-
- case 4:
- FourByteSwap( bitmap->buffer, bytes );
- break;
- }
- }
-
- slot->bitmap_left = metric->leftSideBearing;
- slot->bitmap_top = metric->ascent;
-
- slot->metrics.horiAdvance = metric->characterWidth << 6 ;
- slot->metrics.horiBearingX = metric->rightSideBearing << 6 ;
- slot->metrics.horiBearingY = metric->ascent << 6 ;
- slot->metrics.width = metric->characterWidth << 6 ;
- slot->metrics.height = bitmap->rows << 6;
-
- slot->linearHoriAdvance = (FT_Fixed)bitmap->width << 16;
- slot->format = ft_glyph_format_bitmap;
- slot->flags = ft_glyph_own_bitmap;
-
- FT_TRACE4(( " --- ok\n" ));
-
- Exit:
- return error;
- }
-
-
- static FT_UInt
- PCF_Get_Char_Index( FT_CharMap charmap,
- FT_Long char_code )
- {
- PCF_Face face = (PCF_Face)charmap->face;
- PCF_Encoding en_table = face->encodings;
- int low, high, mid;
-
-
- FT_TRACE4(( "get_char_index %ld\n", char_code ));
-
- low = 0;
- high = face->nencodings - 1;
- while ( low <= high )
- {
- mid = ( low + high ) / 2;
- if ( char_code < en_table[mid].enc )
- high = mid - 1;
- else if ( char_code > en_table[mid].enc )
- low = mid + 1;
- else
- return en_table[mid].glyph;
- }
-
- return 0;
- }
-
-
- FT_CALLBACK_TABLE_DEF
- const FT_Driver_Class pcf_driver_class =
- {
- {
- ft_module_font_driver,
- sizeof ( FT_DriverRec ),
-
- "pcf",
- 0x10000L,
- 0x20000L,
-
- 0,
-
- (FT_Module_Constructor)0,
- (FT_Module_Destructor) 0,
- (FT_Module_Requester) 0
- },
-
- sizeof( PCF_FaceRec ),
- sizeof( FT_SizeRec ),
- sizeof( FT_GlyphSlotRec ),
-
- (FTDriver_initFace) PCF_Init_Face,
- (FTDriver_doneFace) PCF_Done_Face,
- (FTDriver_initSize) 0,
- (FTDriver_doneSize) 0,
- (FTDriver_initGlyphSlot)0,
- (FTDriver_doneGlyphSlot)0,
-
- (FTDriver_setCharSizes) PCF_Set_Pixel_Size,
- (FTDriver_setPixelSizes)PCF_Set_Pixel_Size,
-
- (FTDriver_loadGlyph) PCF_Load_Glyph,
- (FTDriver_getCharIndex) PCF_Get_Char_Index,
-
- (FTDriver_getKerning) 0,
- (FTDriver_attachFile) 0,
- (FTDriver_getAdvances) 0
- };
-
-
-#ifdef FT_CONFIG_OPTION_DYNAMIC_DRIVERS
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* getDriverClass */
- /* */
- /* <Description> */
- /* This function is used when compiling the TrueType driver as a */
- /* shared library (`.DLL' or `.so'). It will be used by the */
- /* high-level library of FreeType to retrieve the address of the */
- /* driver's generic interface. */
- /* */
- /* It shouldn't be implemented in a static build, as each driver must */
- /* have the same function as an exported entry point. */
- /* */
- /* <Return> */
- /* The address of the TrueType's driver generic interface. The */
- /* format-specific interface can then be retrieved through the method */
- /* interface->get_format_interface. */
- /* */
- FT_EXPORT_DEF( const FT_Driver_Class* )
- getDriverClass( void )
- {
- return &pcf_driver_class;
- }
-
-
-#endif /* FT_CONFIG_OPTION_DYNAMIC_DRIVERS */
-
-
-/* END */
projects / rrdtool.git / blobdiff