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freetype/src/cff/cffdrivr.c
Werner Lemberg 68e9f92710 * src/sfnt/ttpost.c (load_post_names, tt_face_free_ps_names, 
tt_face_get_ps_name): Replace switch statement with if clauses to
make it more portable.

* src/cff/cffobjs.c (cff_face_init): Ditto.

* include/freetype/ftmodule.h (FT_Module_Class): Use `FT_Long' for
`module_size'.
* include/freetype/ftrender.h (FT_Glyph_Class_): Use `FT_Long' for
`glyph_size'.

* src/base/ftobjs.c (FT_Render_Glyph): Change second parameter to
`FT_Render_Mode'.
(FT_Render_Glyph_Internal): Change third parameter to
`FT_Render_Mode'.
* src/base/ftglyph.c (FT_Glyph_To_Bitmap): Change second parameter
to `FT_Render_Mode'.

* src/raster/ftrend1.c (ft_raster1_render): Change third parameter
to `FT_Render_Mode'.
* src/smooth/ftsmooth.c (ft_smooth_render, ft_smooth_render_lcd,
ft_smooth_render_lcd_v): Ditto.
(ft_smooth_render_generic): Change third and fifth parameter to
`FT_Render_Mode'.

* include/freetype/freetype.h, include/freetype/internal/ftobjs.h,
include/freetype/ftglyph.h: Updated.

* src/cff/cffdrivr.c (Load_Glyph), src/pcf/pcfdriver.c
(PCF_Glyph_Load), src/pfr/pfrobjs.c (pfr_slot_load),
src/winfonts/winfnt.c (FNT_Load_Glyph), src/t42/t42objs.c
(T42_GlyphSlot_Load), src/bdf/bdfdrivr.c (BDF_Glyph_Load): Change
fourth parameter to `FT_Int32'.

* src/pfr/pfrobjs.c (pfr_face_init): Add two missing parameters
and declare them as unused.

* src/cid/cidparse.h (CID_Parser): Use FT_Long for `postscript_len'.

* src/psnames/psnames.h (PS_Unicode_Value_Func): Change return
value to FT_UInt32.
* src/psnames/psmodule.c (ps_unicode_value, ps_build_unicode_table):
Updated accordingly.

* src/cff/cffdrivr.c (Get_Kerning): Use FT_Long for `middle'.
(cff_get_glyph_name): Use cast for result of ft_strlen.
* src/cff/cffparse.c (cff_parse_real): User cast for assigning
`exp'.
* src/cff/cffload.c (cff_index_get_pointers): Use FT_ULong for
some local variables.
(cff_charset_load, cff_encoding_load): Use casts to FT_UInt for some
switch statements.
(cff_font_load): Use cast in call to CFF_Load_FD_Select.
* src/cff/cffobjs.c (cff_size_init): Use more casts.
(cff_face_init): Use FT_Int32 for `flags'.
* src/cff/cffgload.c (cff_operator_seac): Use cast for assigning
`adx' and `ady'.
(cff_decoder_parse_charstrings): Use FT_ULong for third parameter.
Use more casts.
* src/cff/cffcmap.c (cff_cmap_unicode_init): Use cast for `count'.

* src/cid/cidload.c (cid_read_subrs): Use FT_ULong for `len'.
* src/cid/cidgload.c (cid_load_glyph): Add missing cast for
`cid_get_offset'.

* src/psaux/t1decode.c (t1_decoder_parse_charstrings) <18>: Use
cast for `num_points'.
(t1_decoder_init): Use cast for assigning `decoder->num_glyphs'.

* src/base/ftdebug.c (ft_debug_init): Use FT_Int.
* include/freetype/internal/ftdriver.h (FT_Slot_LoadFunc): Use
`FT_Int32' for fourth parameter.
* src/base/ftobjs.c (open_face): Use cast for calling
clazz->init_face.

* src/raster/ftraster.c (Set_High_Precision): Use `1' instead of
`1L'.
(Finalize_Profile_Table, Line_Up, ft_black_init): Use casts.
* src/raster/ftrend1.c (ft_raster1_render): Ditto.

* src/sfnt/sfnt_dir_check: Compare `magic' with unsigned long
constant.

* builds/amiga/include/freetype/config/ftmodule.h: Updated.
2002-09-27 11:09:23 +00:00

421 lines
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/***************************************************************************/
/* */
/* cffdrivr.c */
/* */
/* OpenType font driver implementation (body). */
/* */
/* Copyright 1996-2001, 2002 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* 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_FREETYPE_H
#include FT_INTERNAL_DEBUG_H
#include FT_INTERNAL_STREAM_H
#include FT_INTERNAL_SFNT_H
#include FT_TRUETYPE_IDS_H
#include FT_INTERNAL_POSTSCRIPT_NAMES_H
#include "cffdrivr.h"
#include "cffgload.h"
#include "cffload.h"
#include "cfferrs.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_cffdriver
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/**** ****/
/**** ****/
/**** F A C E S ****/
/**** ****/
/**** ****/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
#undef PAIR_TAG
#define PAIR_TAG( left, right ) ( ( (FT_ULong)left << 16 ) | \
(FT_ULong)right )
/*************************************************************************/
/* */
/* <Function> */
/* Get_Kerning */
/* */
/* <Description> */
/* A driver method used to return the kerning vector between two */
/* glyphs of the same face. */
/* */
/* <Input> */
/* face :: A handle to the source face object. */
/* */
/* left_glyph :: The index of the left glyph in the kern pair. */
/* */
/* right_glyph :: The index of the right glyph in the kern pair. */
/* */
/* <Output> */
/* kerning :: The kerning vector. This is in font units for */
/* scalable formats, and in pixels for fixed-sizes */
/* formats. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
/* <Note> */
/* Only horizontal layouts (left-to-right & right-to-left) are */
/* supported by this function. Other layouts, or more sophisticated */
/* kernings, are out of scope of this method (the basic driver */
/* interface is meant to be simple). */
/* */
/* They can be implemented by format-specific interfaces. */
/* */
static FT_Error
Get_Kerning( TT_Face face,
FT_UInt left_glyph,
FT_UInt right_glyph,
FT_Vector* kerning )
{
TT_Kern0_Pair pair;
if ( !face )
return CFF_Err_Invalid_Face_Handle;
kerning->x = 0;
kerning->y = 0;
if ( face->kern_pairs )
{
/* there are some kerning pairs in this font file! */
FT_ULong search_tag = PAIR_TAG( left_glyph, right_glyph );
FT_Long left, right;
left = 0;
right = face->num_kern_pairs - 1;
while ( left <= right )
{
FT_Long middle = left + ( ( right - left ) >> 1 );
FT_ULong cur_pair;
pair = face->kern_pairs + middle;
cur_pair = PAIR_TAG( pair->left, pair->right );
if ( cur_pair == search_tag )
goto Found;
if ( cur_pair < search_tag )
left = middle + 1;
else
right = middle - 1;
}
}
Exit:
return CFF_Err_Ok;
Found:
kerning->x = pair->value;
goto Exit;
}
#undef PAIR_TAG
/*************************************************************************/
/* */
/* <Function> */
/* Load_Glyph */
/* */
/* <Description> */
/* A driver method used to load a glyph within a given glyph slot. */
/* */
/* <Input> */
/* slot :: A handle to the target slot object where the glyph */
/* will be loaded. */
/* */
/* size :: A handle to the source face size at which the glyph */
/* must be scaled, loaded, etc. */
/* */
/* glyph_index :: The index of the glyph in the font file. */
/* */
/* load_flags :: A flag indicating what to load for this glyph. The */
/* FTLOAD_??? constants can be used to control the */
/* glyph loading process (e.g., whether the outline */
/* should be scaled, whether to load bitmaps or not, */
/* whether to hint the outline, etc). */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
static FT_Error
Load_Glyph( CFF_GlyphSlot slot,
CFF_Size size,
FT_UShort glyph_index,
FT_Int32 load_flags )
{
FT_Error error;
if ( !slot )
return CFF_Err_Invalid_Slot_Handle;
/* check whether we want a scaled outline or bitmap */
if ( !size )
load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;
if ( load_flags & FT_LOAD_NO_SCALE )
size = NULL;
/* reset the size object if necessary */
if ( size )
{
/* these two object must have the same parent */
if ( size->face != slot->root.face )
return CFF_Err_Invalid_Face_Handle;
}
/* now load the glyph outline if necessary */
error = cff_slot_load( slot, size, glyph_index, load_flags );
/* force drop-out mode to 2 - irrelevant now */
/* slot->outline.dropout_mode = 2; */
return error;
}
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/**** ****/
/**** ****/
/**** C H A R A C T E R M A P P I N G S ****/
/**** ****/
/**** ****/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
static FT_Error
cff_get_glyph_name( CFF_Face face,
FT_UInt glyph_index,
FT_Pointer buffer,
FT_UInt buffer_max )
{
CFF_Font font = (CFF_Font)face->extra.data;
FT_Memory memory = FT_FACE_MEMORY( face );
FT_String* gname;
FT_UShort sid;
PSNames_Service psnames;
FT_Error error;
psnames = (PSNames_Service)FT_Get_Module_Interface(
face->root.driver->root.library, "psnames" );
if ( !psnames )
{
FT_ERROR(( "cff_get_glyph_name:" ));
FT_ERROR(( " cannot open CFF & CEF fonts\n" ));
FT_ERROR(( " " ));
FT_ERROR(( " without the `PSNames' module\n" ));
error = CFF_Err_Unknown_File_Format;
goto Exit;
}
/* first, locate the sid in the charset table */
sid = font->charset.sids[glyph_index];
/* now, lookup the name itself */
gname = cff_index_get_sid_string( &font->string_index, sid, psnames );
if ( buffer_max > 0 )
{
FT_UInt len = (FT_UInt)ft_strlen( gname );
if ( len >= buffer_max )
len = buffer_max - 1;
FT_MEM_COPY( buffer, gname, len );
((FT_Byte*)buffer)[len] = 0;
}
FT_FREE ( gname );
error = CFF_Err_Ok;
Exit:
return error;
}
/*************************************************************************/
/* */
/* <Function> */
/* cff_get_name_index */
/* */
/* <Description> */
/* Uses the psnames module and the CFF font's charset to to return a */
/* a given glyph name's glyph index. */
/* */
/* <Input> */
/* face :: A handle to the source face object. */
/* */
/* glyph_name :: The glyph name. */
/* */
/* <Return> */
/* Glyph index. 0 means `undefined character code'. */
/* */
static FT_UInt
cff_get_name_index( CFF_Face face,
FT_String* glyph_name )
{
CFF_Font cff;
CFF_Charset charset;
PSNames_Service psnames;
FT_Memory memory = FT_FACE_MEMORY( face );
FT_String* name;
FT_UShort sid;
FT_UInt i;
FT_Int result;
cff = (CFF_FontRec *)face->extra.data;
charset = &cff->charset;
psnames = (PSNames_Service)FT_Get_Module_Interface(
face->root.driver->root.library, "psnames" );
for ( i = 0; i < cff->num_glyphs; i++ )
{
sid = charset->sids[i];
if ( sid > 390 )
name = cff_index_get_name( &cff->string_index, sid - 391 );
else
name = (FT_String *)psnames->adobe_std_strings( sid );
result = ft_strcmp( glyph_name, name );
if ( sid > 390 )
FT_FREE( name );
if ( !result )
return i;
}
return 0;
}
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/**** ****/
/**** ****/
/**** D R I V E R I N T E R F A C E ****/
/**** ****/
/**** ****/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
static FT_Module_Interface
cff_get_interface( CFF_Driver driver,
const char* module_interface )
{
FT_Module sfnt;
#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES
if ( ft_strcmp( (const char*)module_interface, "glyph_name" ) == 0 )
return (FT_Module_Interface)cff_get_glyph_name;
if ( ft_strcmp( (const char*)module_interface, "name_index" ) == 0 )
return (FT_Module_Interface)cff_get_name_index;
#endif
/* we simply pass our request to the `sfnt' module */
sfnt = FT_Get_Module( driver->root.root.library, "sfnt" );
return sfnt ? sfnt->clazz->get_interface( sfnt, module_interface ) : 0;
}
/* The FT_DriverInterface structure is defined in ftdriver.h. */
FT_CALLBACK_TABLE_DEF
const FT_Driver_ClassRec cff_driver_class =
{
/* begin with the FT_Module_Class fields */
{
ft_module_font_driver |
ft_module_driver_scalable |
ft_module_driver_has_hinter,
sizeof( CFF_DriverRec ),
"cff",
0x10000L,
0x20000L,
0, /* module-specific interface */
(FT_Module_Constructor)cff_driver_init,
(FT_Module_Destructor) cff_driver_done,
(FT_Module_Requester) cff_get_interface,
},
/* now the specific driver fields */
sizeof( TT_FaceRec ),
sizeof( FT_SizeRec ),
sizeof( CFF_GlyphSlotRec ),
(FT_Face_InitFunc) cff_face_init,
(FT_Face_DoneFunc) cff_face_done,
(FT_Size_InitFunc) cff_size_init,
(FT_Size_DoneFunc) cff_size_done,
(FT_Slot_InitFunc) cff_slot_init,
(FT_Slot_DoneFunc) cff_slot_done,
(FT_Size_ResetPointsFunc)cff_size_reset,
(FT_Size_ResetPixelsFunc)cff_size_reset,
(FT_Slot_LoadFunc) Load_Glyph,
(FT_Face_GetKerningFunc) Get_Kerning,
(FT_Face_AttachFunc) 0,
(FT_Face_GetAdvancesFunc)0,
};
/* END */
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