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|
/* $XConsortium: fontfcn.c,v 1.8 92/03/27 18:15:45 eswu Exp $ */
/* Copyright International Business Machines,Corp. 1991
* All Rights Reserved
*
* License to use, copy, modify, and distribute this software
* and its documentation for any purpose and without fee is
* hereby granted, provided that the above copyright notice
* appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation,
* and that the name of IBM not be used in advertising or
* publicity pertaining to distribution of the software without
* specific, written prior permission.
*
* IBM PROVIDES THIS SOFTWARE "AS IS", WITHOUT ANY WARRANTIES
* OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT
* LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT OF
* THIRD PARTY RIGHTS. THE ENTIRE RISK AS TO THE QUALITY AND
* PERFORMANCE OF THE SOFTWARE, INCLUDING ANY DUTY TO SUPPORT
* OR MAINTAIN, BELONGS TO THE LICENSEE. SHOULD ANY PORTION OF
* THE SOFTWARE PROVE DEFECTIVE, THE LICENSEE (NOT IBM) ASSUMES
* THE ENTIRE COST OF ALL SERVICING, REPAIR AND CORRECTION. IN
* NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* Author: Katherine A. Hitchcock IBM Almaden Research Laboratory */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "t1imager.h"
#include "util.h"
#include "fontfcn.h"
#include "fontmisc.h"
#include "paths_rmz.h"
#include "../t1lib/parseAFM.h"
#include "../t1lib/t1types.h"
#include "../t1lib/t1extern.h"
#include "../t1lib/t1misc.h"
#include "../t1lib/t1base.h"
#include "../t1lib/t1finfo.h"
extern xobject Type1Char(psfont *env, struct XYspace *S,
psobj *charstrP, psobj *subrsP,
psobj *osubrsP,
struct blues_struct *bluesP,
int *modeP, char *name);
extern xobject Type1Line(psfont *env, struct XYspace *S,
float line_position,
float line_thickness,
float line_length);
extern boolean Init_BuiltInEncoding( void);
void objFormatName(psobj *objP, int length, char *valueP);
extern void T1io_reset( void);
#define BEZIERTYPE 0x10+0x02
#define LINETYPE 0x10+0x00
#define MOVETYPE 0x10+0x05
/***================================================================***/
/* GLOBALS */
/***================================================================***/
static char CurCharName[257]="";
static char BaseCharName[257]="";
char CurFontName[120];
char *CurFontEnv;
char *vm_base = NULL;
static char notdef[]=".notdef";
/* the following is inserted by RMz for VM checking and reallocating: */
char *vm_used = NULL;
extern int vm_init_count;
extern int vm_init_amount;
static psfont *FontP = NULL;
psfont TheCurrentFont;
/***================================================================***/
/* SearchDict - look for name */
/* - compare for match on len and string */
/* return 0 - not found. */
/* return n - nth element in dictionary. */
/***================================================================***/
int SearchDictName(dictP,keyP)
psdict *dictP;
psobj *keyP;
{
int i,n;
n = dictP[0].key.len;
for (i=1;i<=n;i++) { /* scan the intire dictionary */
if (
(dictP[i].key.len == keyP->len )
&&
(strncmp(dictP[i].key.data.valueP,
keyP->data.valueP,
keyP->len) == 0
)
) return(i);
}
return(0);
}
/***================================================================***/
/* assignment of &TheCurrentFont removed by RMz:
*/
boolean initFont()
{
if (!(vm_init())) return(FALSE);
vm_base = vm_next_byte();
if (!(Init_BuiltInEncoding())) return(FALSE);
strcpy(CurFontName, ""); /* iniitialize to none */
FontP->vm_start = vm_next_byte();
FontP->FontFileName.len = 0;
FontP->FontFileName.data.valueP = CurFontName;
return(TRUE);
}
/***================================================================***/
int resetFont(env)
char *env;
{
vm_next = FontP->vm_start;
vm_free = vm_size - ( vm_next - vm_base);
FontP->Subrs.len = 0;
FontP->Subrs.data.stringP = NULL;
FontP->CharStringsP = NULL;
FontP->Private = NULL;
FontP->fontInfoP = NULL;
FontP->BluesP = NULL;
/* This will load the font into the FontP */
strcpy(CurFontName,env);
FontP->FontFileName.len = strlen(CurFontName);
FontP->FontFileName.data.nameP = CurFontName;
T1io_reset();
return(0);
}
/***================================================================***/
/* Read font used to attempt to load the font and, upon failure,
try a second time with twice as much memory. Unfortunately, if
it's a really complex font, simply using 2*vm_size may be insufficient.
I've modified it so that the program will try progressively larger
amounts of memory until it really runs out or the font loads
successfully. (ndw)
*/
int readFont(env)
char *env;
{
int rcode;
/* int memscale = 2; */ /* initially, try twice just like we used to ... */
/* restore the virtual memory and eliminate old font */
resetFont(env);
/* This will load the font into the FontP */
rcode = scan_font(FontP);
return(rcode);
}
static int isCompositeChar( int FontID,
char *charname)
{
int i;
FontInfo *pAFMData;
if (pFontBase->pFontArray[FontID].pAFMData==NULL) {
/* No AFM data present */
return( -1);
}
pAFMData=pFontBase->pFontArray[FontID].pAFMData;
for ( i=0; i<pAFMData->numOfComps; i++) {
if (strcmp( pAFMData->ccd[i].ccName, charname)==0)
return( i);
}
return( -1);
}
/* dump a description of path elements to stdout */
static T1_PATHPOINT getDisplacement( struct segment *path)
{
register struct segment *ipath;
register struct beziersegment *ibpath;
T1_PATHPOINT point={0,0};
/* Step through the path list */
ipath=(struct segment *)path;
do {
if (ipath->type==LINETYPE) {
point.x+=ipath->dest.x;
point.y+=ipath->dest.y;
}
else if (ipath->type==MOVETYPE) {
point.x+=ipath->dest.x;
point.y+=ipath->dest.y;
}
else if (ipath->type==BEZIERTYPE) {
ibpath=(struct beziersegment *)ipath;
point.x+=ibpath->dest.x;
point.y+=ibpath->dest.y;
}
ipath=ipath->link;
} while (ipath!=NULL);
return( point);
}
/***================================================================***/
/* RMz: instead of code, which is a character pointer to the name
of the character, we use "ev" which is a pointer to a desired
encoding vector (or NULL if font-internal encoding should be
used) and "index" as an index into the desired encoding vector!
The user thus has the opportunity of supplying whatever encoding
he wants. Font_Ptr is the pointer to the local psfont-structure.
*/
xobject fontfcnB(int FontID, int modflag,
struct XYspace *S, char **ev,
unsigned char index, int *mode,
psfont *Font_Ptr,
int do_raster)
{
psobj *charnameP; /* points to psobj that is name of character*/
FontInfo *pAFMData=NULL;
int i=-1;
int j=0;
int numPieces=1;
int N;
T1_PATHPOINT currdisp;
int basechar;
psdict *CharStringsDictP; /* dictionary with char strings */
psobj CodeName; /* used to store the translation of the name*/
psobj *SubrsArrayP;
psobj *theStringP;
int localmode=0;
struct segment *charpath=NULL; /* the path for this character */
struct segment *tmppath1=NULL;
struct segment *tmppath2=NULL;
struct segment *tmppath3=NULL;
struct segment *tmppath4=NULL;
/* set the global font pointer to the address of already allocated
structure and setup pointers*/
FontP=Font_Ptr;
CharStringsDictP = FontP->CharStringsP;
SubrsArrayP = &(FontP->Subrs);
charnameP = &CodeName;
if (ev==NULL){ /* font-internal encoding should be used */
charnameP->len = FontP->fontInfoP[ENCODING].value.data.arrayP[index].len;
charnameP->data.stringP = (unsigned char *) FontP->fontInfoP[ENCODING].value.data.arrayP[index].data.arrayP;
}
else{ /* some user-supplied encoding is to be used */
charnameP->len = strlen(ev[index]);
charnameP->data.stringP = (unsigned char *) ev[index];
}
strncpy( (char *)CurCharName, (char *)charnameP->data.stringP, charnameP->len);
CurCharName[charnameP->len]='\0';
/* search the chars string for this charname as key */
basechar = SearchDictName(CharStringsDictP,charnameP);
if (basechar<=0) {
/* Check first, whether a char in question is a composite char */
if ((i=isCompositeChar( FontID, CurCharName))>-1) {
/* i is now the index of the composite char definitions
(starting at 0). At this point it is clear that AFM-info
must be present -> fetch first component of composite char. */
pAFMData=pFontBase->pFontArray[FontID].pAFMData;
charnameP->len=strlen( pAFMData->ccd[i].pieces[0].pccName);
charnameP->data.stringP=(unsigned char*)pAFMData->ccd[i].pieces[0].pccName;
numPieces=pAFMData->ccd[i].numOfPieces;
if ((basechar=SearchDictName(CharStringsDictP,charnameP))<=0) {
/* this is bad, AFM-file and font file do not match. This
will most probably lead to errors or inconsistencies later.
However, we substitute .notdef and inform the user via
logfile and T1_errno. */
sprintf( err_warn_msg_buf,
"Charstring \"%s\" needed to construct composite char \"%s\" not defined (FontID=%d)",
pAFMData->ccd[i].pieces[0].pccName,
pAFMData->ccd[i].ccName, FontID);
T1_PrintLog( "fontfcnB():", err_warn_msg_buf, T1LOG_WARNING);
T1_errno=T1ERR_COMPOSITE_CHAR;
}
}
}
if (basechar<=0) { /* This means the requested char is unknown or the
base char of a composite is not found ->
we substitute .notdef */
charnameP = &CodeName;
charnameP->len = 7;
charnameP->data.stringP = (unsigned char *) notdef;
basechar = SearchDictName(CharStringsDictP,charnameP);
localmode=FF_NOTDEF_SUBST;
/* Font must be completely damaged if it doesn't define a .notdef */
if (basechar<=0) {
*mode=FF_PARSE_ERROR;
return(NULL);
}
} /* if (basechar<=0) */
/* basechar is now the index of the base character in the CharStrings
dictionary */
/* we provide the Type1Char() procedure with the name of the character
to rasterize for debugging purposes */
strncpy( (char *)CurCharName, (char *)charnameP->data.stringP, charnameP->len);
CurCharName[charnameP->len]='\0';
/* get CharString and character path */
theStringP = &(CharStringsDictP[basechar].value);
tmppath2 = (struct segment *) Type1Char(FontP,S,theStringP,SubrsArrayP,NULL,
FontP->BluesP,mode,CurCharName);
/* if Type1Char reported an error, then return */
if ( *mode == FF_PARSE_ERROR || *mode==FF_PATH_ERROR)
return(NULL);
/* Defer rastering to later, we first have to handle the composite
symbols */
for (j=1; j<numPieces; j++) {
/* get composite symbol name */
charnameP->len=strlen( pAFMData->ccd[i].pieces[j].pccName);
charnameP->data.stringP=(unsigned char*)pAFMData->ccd[i].pieces[j].pccName;
/* get CharString definition */
if ((N=SearchDictName(CharStringsDictP,charnameP))<=0) {
/* handling of errors, see comments above ... */
sprintf( err_warn_msg_buf,
"Charstring \"%s\" needed to construct composite char \"%s\" not defined (FontID=%d)",
pAFMData->ccd[i].pieces[j].pccName,
pAFMData->ccd[i].ccName, FontID);
T1_PrintLog( "fontfcnB():", err_warn_msg_buf, T1LOG_WARNING);
charnameP = &CodeName;
charnameP->len = 7;
charnameP->data.stringP = (unsigned char *) notdef;
N = SearchDictName(CharStringsDictP,charnameP);
localmode=FF_NOTDEF_SUBST;
/* damaged Font */
if (N<=0) {
*mode=FF_PARSE_ERROR;
if (charpath!=NULL) {
KillPath( charpath);
}
return(NULL);
}
}
theStringP = &(CharStringsDictP[N].value);
tmppath1=(struct segment *)ILoc(S,
pAFMData->ccd[i].pieces[j].deltax,
pAFMData->ccd[i].pieces[j].deltay);
strncpy( (char *)CurCharName, (char *)charnameP->data.stringP, charnameP->len);
CurCharName[charnameP->len]='\0';
charpath=(struct segment *)Type1Char(FontP,S,theStringP,SubrsArrayP,NULL,
FontP->BluesP,mode,CurCharName);
/* return if Type1Char reports an error */
if ( *mode == FF_PARSE_ERROR || *mode==FF_PATH_ERROR)
return(NULL);
/* get escapement of current symbol */
currdisp=getDisplacement( charpath);
/* concat displacement and symbol path */
charpath=(struct segment *)Join(tmppath1,charpath);
/* for composite symbols we have to step back the char escapement.
this is, in order to be able to use accents that cause a
non zero displacement of the current point! We further have to
step back the displacement from composite char data. */
tmppath1=(struct segment *)t1_PathSegment( MOVETYPE, -currdisp.x, -currdisp.y);
tmppath3=(struct segment *)ILoc(S,
-pAFMData->ccd[i].pieces[j].deltax,
-pAFMData->ccd[i].pieces[j].deltay);
tmppath3=(struct segment *)Join(tmppath1,tmppath3);
/* create path, or, respectively, append to existing path */
if (tmppath4==NULL) {
tmppath4=(struct segment *)Join(charpath,tmppath3);
}
else {
charpath=(struct segment *)Join(charpath,tmppath3);
tmppath4=(struct segment *)Join(tmppath4,charpath);
}
}
/* concat composite symbols and base char */
if (tmppath4==NULL) { /* no previous composite symbols */
charpath=tmppath2; /* a simple char */
}
else {
charpath=(struct segment *)Join(tmppath4,tmppath2);
}
if (do_raster) {
/* fill with winding rule unless path was requested */
if (*mode != FF_PATH) {
charpath = (struct segment *)Interior(charpath,WINDINGRULE+CONTINUITY);
}
}
if (*mode==0)
*mode=localmode;
return((xobject) charpath);
}
/***================================================================***/
/* fontfcnA(env, mode) */
/* */
/* env is a pointer to a string that contains the fontname. */
/* */
/* 1) initialize the font - global indicates it has been done */
/* 2) load the font */
/* */
/* This function has been modified by RMz. It now takes a pointer which
already contains the address of a valid type1 font structure as the
third argument. The value of this pointer is first handed to FontP
so that most other routines may be used without changes */
#define MAXTRIAL 4
/***================================================================***/
Bool fontfcnA(env,mode,Font_Ptr)
char *env;
int *mode;
psfont *Font_Ptr;
{
int i, result;
/* set the global font pointer to the address of already allocated
structure */
FontP=Font_Ptr;
InitImager();
/* Read the font program. */
for (i=1; i<MAXTRIAL; i++){
vm_init_count=0;
/* We allocate larger chunks (4*65536 Bytes) in order to reduce load
time for large fonts by initially requesting somewhat more
memory. */
vm_init_amount=MAX_STRING_LEN * 4 * i;
if (!(initFont())) {
/* we are really out of memory, not simulated! */
*mode = SCAN_OUT_OF_MEMORY;
return(FALSE);
}
/* Try to read font into memory */
if ((result=readFont(env))==0){
/* In order to get the amount of memory that was really used */
vm_used=vm_next_byte();
return(TRUE);
}
else{
/* VM did not suffice, free it and try again with larger
value: */
free(vm_base);
}
}
/* Font could not be loaded: */
*mode = result;
return(FALSE);
}
/***================================================================***/
/* QueryFontLib(env, infoName,infoValue,rcodeP) */
/* */
/* env is a pointer to a string that contains the fontname. */
/* */
/* 1) initialize the font - global indicates it has been done */
/* 2) load the font */
/* 3) use the font to call getInfo for that value. */
/***================================================================***/
void QueryFontLib(env,infoName,infoValue,rcodeP)
char *env;
char *infoName;
pointer infoValue; /* parameter returned here */
int *rcodeP;
{
int rc,N,i;
psdict *dictP;
psobj nameObj;
psobj *valueP;
/* Has the FontP initialized? If not, then */
/* Initialize */
if (FontP == NULL) {
InitImager();
if (!(initFont())) {
*rcodeP = 1;
return;
}
}
/* if the env is null, then use font already loaded */
/* if the not same font name, reset and load next font */
if ( (env) && (strcmp(env,CurFontName) != 0 ) ) {
/* restore the virtual memory and eliminate old font */
rc = readFont(env);
if (rc != 0 ) {
strcpy(CurFontName, ""); /* no font loaded */
*rcodeP = 1;
return;
}
}
dictP = FontP->fontInfoP;
objFormatName(&nameObj,strlen(infoName),infoName);
N = SearchDictName(dictP,&nameObj);
/* if found */
if ( N > 0 ) {
*rcodeP = 0;
switch (dictP[N].value.type) {
case OBJ_ARRAY:
valueP = dictP[N].value.data.arrayP;
if (strcmp(infoName,"FontMatrix") == 0) {
/* 6 elments, return them as floats */
for (i=0;i<6;i++) {
if (valueP->type == OBJ_INTEGER )
((float *)infoValue)[i] = valueP->data.integer;
else
((float *)infoValue)[i] = valueP->data.real;
valueP++;
}
}
if (strcmp(infoName,"FontBBox") == 0) {
/* 4 elments for Bounding Box. all integers */
for (i=0;i<4;i++) {
((int *)infoValue)[i] = valueP->data.integer;
valueP++;
}
break;
case OBJ_INTEGER:
case OBJ_BOOLEAN:
*((int *)infoValue) = dictP[N].value.data.integer;
break;
case OBJ_REAL:
*((float *)infoValue) = dictP[N].value.data.real;
break;
case OBJ_NAME:
case OBJ_STRING:
*((char **)infoValue) = dictP[N].value.data.valueP;
break;
default:
*rcodeP = 1;
break;
}
}
}
else *rcodeP = 1;
}
/***================================================================***/
/* RMz: instead of code, which is a character pointer to the name
of the character, we use "ev" which is a pointer to a desired
encoding vector (or NULL if font-internal encoding should be
used) and "index" as an index into the desired encoding vector!
The user thus has the opportunity of supplying whatever encoding
he wants. Font_Ptr is the pointer to the local psfont-structure.
*/
xobject fontfcnB_string( int FontID, int modflag,
struct XYspace *S, char **ev,
unsigned char *string, int no_chars,
int *mode, psfont *Font_Ptr,
int *kern_pairs, long spacewidth,
int do_raster)
{
psobj *charnameP; /* points to psobj that is name of character*/
FontInfo *pAFMData=NULL;
int i=-1;
int j=0;
int k=0;
long acc_width=0;
int numPieces=1;
int N;
T1_PATHPOINT currdisp;
int basechar;
psdict *CharStringsDictP; /* dictionary with char strings */
psobj CodeName; /* used to store the translation of the name*/
psobj *SubrsArrayP;
psobj *theStringP;
int localmode=0;
struct segment *charpath=NULL; /* the path for this character */
struct segment *tmppath1=NULL;
struct segment *tmppath2=NULL;
struct segment *tmppath3=NULL;
struct segment *tmppath4=NULL;
struct segment *tmppath5=NULL;
/* set the global font pointer to the address of already allocated
structure and setup pointers*/
FontP=Font_Ptr;
CharStringsDictP = FontP->CharStringsP;
SubrsArrayP = &(FontP->Subrs);
charnameP = &CodeName;
/* In the following for-loop, all characters are processed, one after
the other. Between them, the amount of kerning is inserted.
The number of path variables used is somewhat numerous. We use the
follwing conventions:
charpath: the overall path of the string.
tmppath5: the overall path of one component (possibly a composite symbol)
tmppath2: the path of a simple char or base char of a composite
tmppath4: the path of all "accents" of a composite symbol
*/
for (k=0; k<no_chars;k++) {
if (ev==NULL){ /* font-internal encoding should be used */
charnameP = &CodeName;
charnameP->len = FontP->fontInfoP[ENCODING].value.data.arrayP[string[k]].len;
charnameP->data.stringP = (unsigned char *) FontP->fontInfoP[ENCODING].value.data.arrayP[string[k]].data.arrayP;
}
else { /* some user-supplied encoding is to be used */
charnameP = &CodeName;
charnameP->len = strlen(ev[string[k]]);
charnameP->data.stringP = (unsigned char*) ev[string[k]];
}
/* Spacing is to be under users control: => if space is the charname, don't
raster it. Rather, generate a horizontal movement of spacewidth: */
if (strcmp((char *)charnameP->data.stringP, "space")==0){
tmppath5=(struct segment *)ILoc(S, spacewidth,0);
acc_width += spacewidth;
}
else {
/* here a character or composite character is to be constructed */
strncpy( (char *)CurCharName, (char *)charnameP->data.stringP, charnameP->len);
CurCharName[charnameP->len]='\0';
/* search the CharString for this charname as key */
basechar = SearchDictName(CharStringsDictP,charnameP);
if (basechar<=0) {
/* Check first, whether a char in question is a composite char */
if ((i=isCompositeChar( FontID, CurCharName))>-1) {
/* i is now the index of the composite char definitions
(starting at 0). At this point it is clear that AFM-info
must be present -> fetch first component of composite char. */
pAFMData=pFontBase->pFontArray[FontID].pAFMData;
charnameP->len=strlen( pAFMData->ccd[i].pieces[0].pccName);
charnameP->data.stringP=(unsigned char*)pAFMData->ccd[i].pieces[0].pccName;
numPieces=pAFMData->ccd[i].numOfPieces;
if ((basechar=SearchDictName(CharStringsDictP,charnameP))<=0) {
/* this is bad, AFM-file and font file do not match. This
will most probably lead to errors or inconsistencies later.
However, we substitute .notdef and inform the user via
logfile and T1_errno. */
sprintf( err_warn_msg_buf,
"Charstring \"%s\" needed to construct composite char \"%s\" not defined (FontID=%d)",
pAFMData->ccd[i].pieces[0].pccName,
pAFMData->ccd[i].ccName, FontID);
T1_PrintLog( "fontfcnB():", err_warn_msg_buf, T1LOG_WARNING);
T1_errno=T1ERR_COMPOSITE_CHAR;
}
}
}
if (basechar<=0) { /* This means the requested char is unknown or the
base char of a composite is not found ->
we substitute .notdef */
charnameP = &CodeName;
charnameP->len = 7;
charnameP->data.stringP = (unsigned char *) notdef;
basechar = SearchDictName(CharStringsDictP,charnameP);
localmode=FF_NOTDEF_SUBST;
/* Font must be completely damaged if it doesn't define a .notdef */
if (basechar<=0) {
*mode=FF_PARSE_ERROR;
return(NULL);
}
} /* if (basechar<=0) */
/* basechar is now the index of the base character in the CharStrings
dictionary */
/* we provide the Type1Char() procedure with the name of the character
to rasterize for debugging purposes */
strncpy( (char *)CurCharName, (char *)charnameP->data.stringP, charnameP->len);
CurCharName[charnameP->len]='\0';
/* get CharString and character path */
theStringP = &(CharStringsDictP[basechar].value);
tmppath2 = (struct segment *) Type1Char(FontP,S,theStringP,SubrsArrayP,NULL,
FontP->BluesP,mode,CurCharName);
strcpy( BaseCharName, CurCharName);
/* if Type1Char reports an error, clean up and return */
if ( *mode == FF_PARSE_ERROR || *mode==FF_PATH_ERROR) {
if (charpath!=NULL) {
KillPath( charpath);
}
if (tmppath1!=NULL) {
KillPath( tmppath1);
}
if (tmppath2!=NULL) {
KillPath( tmppath2);
}
if (tmppath3!=NULL) {
KillPath( tmppath3);
}
if (tmppath4!=NULL) {
KillPath( tmppath4);
}
if (tmppath5!=NULL) {
KillPath( tmppath5);
}
return(NULL);
}
/* Defer rastering to later, we first have to handle the composite
symbols */
for (j=1; j<numPieces; j++) {
/* get composite symbol name */
charnameP->len=strlen( pAFMData->ccd[i].pieces[j].pccName);
charnameP->data.stringP=(unsigned char*)pAFMData->ccd[i].pieces[j].pccName;
/* get CharString definition */
if ((N=SearchDictName(CharStringsDictP,charnameP))<=0) {
/* handling of errors, see comments above ... */
sprintf( err_warn_msg_buf,
"Charstring \"%s\" needed to construct composite char \"%s\" not defined (FontID=%d)",
pAFMData->ccd[i].pieces[j].pccName,
pAFMData->ccd[i].ccName, FontID);
T1_PrintLog( "fontfcnB():", err_warn_msg_buf, T1LOG_WARNING);
charnameP = &CodeName;
charnameP->len = 7;
charnameP->data.stringP = (unsigned char *) notdef;
N = SearchDictName(CharStringsDictP,charnameP);
localmode=FF_NOTDEF_SUBST;
/* an undefined .notdef is fatal -> clean up and return */
if (N<=0) {
*mode=FF_PARSE_ERROR;
if (charpath!=NULL) {
KillPath( charpath);
}
if (tmppath1!=NULL) {
KillPath( tmppath1);
}
if (tmppath2!=NULL) {
KillPath( tmppath2);
}
if (tmppath3!=NULL) {
KillPath( tmppath3);
}
if (tmppath4!=NULL) {
KillPath( tmppath4);
}
if (tmppath5!=NULL) {
KillPath( tmppath5);
}
return(NULL);
}
}
theStringP = &(CharStringsDictP[N].value);
tmppath1=(struct segment *)ILoc(S,
pAFMData->ccd[i].pieces[j].deltax,
pAFMData->ccd[i].pieces[j].deltay);
strncpy( (char *)CurCharName, (char *)charnameP->data.stringP, charnameP->len);
CurCharName[charnameP->len]='\0';
tmppath5=(struct segment *)Type1Char(FontP,S,theStringP,SubrsArrayP,NULL,
FontP->BluesP,mode,CurCharName);
/* return if Type1Char reports an error */
if ( *mode == FF_PARSE_ERROR || *mode==FF_PATH_ERROR)
return(NULL);
/* get escapement of current symbol */
currdisp=getDisplacement( tmppath5);
/* concat displacement and symbol path */
tmppath5=(struct segment *)Join(tmppath1,tmppath5);
/* for composite symbols we have to step back the char escapement.
this is, in order to be able to use accents that cause a
non zero displacement of the current point! We further have to
step back the displacement from composite char data. */
tmppath1=(struct segment *)t1_PathSegment( MOVETYPE, -currdisp.x, -currdisp.y);
tmppath3=(struct segment *)ILoc(S,
-pAFMData->ccd[i].pieces[j].deltax,
-pAFMData->ccd[i].pieces[j].deltay);
tmppath3=(struct segment *)Join(tmppath1,tmppath3);
/* create path, or, respectively, append to existing path */
if (tmppath4==NULL) {
tmppath4=(struct segment *)Join(tmppath5,tmppath3);
}
else {
tmppath5=(struct segment *)Join(tmppath5,tmppath3);
tmppath4=(struct segment *)Join(tmppath4,tmppath5);
}
}
/* concat composite symbols and base char. We use tmppath5 to store
the path of the resulting (possibly composite) character. */
if (tmppath4==NULL) { /* no previous composite symbols */
tmppath5=tmppath2; /* a simple char */
}
else {
tmppath5=(struct segment *)Join(tmppath4,tmppath2);
}
/* Accumulate displacement, but be careful: In case of composite
characters, we have to take the escapement of the base char only
into account, because accents do not cause spacing. The path is
constructed in a way that this automatically matches.
*/
if (numPieces>1) { /* composite character */
acc_width +=pFontBase->pFontArray[FontID].pAFMData->ccd[-(pFontBase->pFontArray[FontID].pEncMap[string[k]]+1)].wx;
}
else { /* ordinary character */
acc_width +=pFontBase->pFontArray[FontID].pAFMData->cmi[pFontBase->pFontArray[FontID].pEncMap[string[k]]-1].wx;
}
} /* else (if (char==space) */
/* character path is now stored in tmppath5. It may be a composite character.
Insert kerning amount, if it is not the last character of the string. */
if (k<no_chars-1){
tmppath2=(struct segment *)ILoc(S,kern_pairs[k],0);
tmppath5=(struct segment *)Join(tmppath5,tmppath2);
acc_width += kern_pairs[k];
}
if (charpath!=NULL){
charpath=(struct segment *)Join(charpath,tmppath5);
}
else{
charpath=(struct segment *)tmppath5;
}
/* reset the temporary paths so that constructing composite
characters wiil continue to work properly in the next interation. */
tmppath1=NULL;
tmppath2=NULL;
tmppath3=NULL;
tmppath4=NULL;
tmppath5=NULL;
/* reset composition parameters */
i=-1;
numPieces=1;
} /* for (k<no_chars) */
/* Take care for underlining and such */
if (modflag & T1_UNDERLINE){
tmppath2=(struct segment *)Type1Line(FontP,S,
pFontBase->pFontArray[FontID].UndrLnPos,
pFontBase->pFontArray[FontID].UndrLnThick,
(float) acc_width);
charpath=(struct segment *)Join(charpath,tmppath2);
}
if (modflag & T1_OVERLINE){
tmppath2=(struct segment *)Type1Line(FontP,S,
pFontBase->pFontArray[FontID].OvrLnPos,
pFontBase->pFontArray[FontID].OvrLnThick,
(float) acc_width);
charpath=(struct segment *)Join(charpath,tmppath2);
}
if (modflag & T1_OVERSTRIKE){
tmppath2=(struct segment *)Type1Line(FontP,S,
pFontBase->pFontArray[FontID].OvrStrkPos,
pFontBase->pFontArray[FontID].OvrStrkThick,
(float) acc_width);
charpath=(struct segment *)Join(charpath,tmppath2);
}
/*
printf("charpath->type: %x\n",charpath->type);
printf("path1->type: %x\n",path1->type);
printf("path2->type: %x\n",path2->type);
*/
/* if Type1Char reported an error, then return */
if ( *mode == FF_PARSE_ERROR) return(NULL);
if ( *mode == FF_PATH_ERROR) return(NULL);
if (do_raster) {
/* fill with winding rule unless path was requested */
if (*mode != FF_PATH) {
charpath = (struct segment *) Interior((path) charpath,WINDINGRULE+CONTINUITY);
}
}
if (*mode==0)
*mode=localmode;
return((path)charpath);
}
/* This special variant is for generating character bitmaps from
charactername */
xobject fontfcnB_ByName( int FontID, int modflag,
struct XYspace *S,
unsigned char *charname,
int *mode, psfont *Font_Ptr,
int do_raster)
{
psobj *charnameP; /* points to psobj that is name of character*/
FontInfo *pAFMData=NULL;
int i=-1;
int j=0;
int numPieces=1;
int N;
T1_PATHPOINT currdisp;
int basechar;
psdict *CharStringsDictP; /* dictionary with char strings */
psobj CodeName; /* used to store the translation of the name*/
psobj *SubrsArrayP;
psobj *theStringP;
int localmode=0;
struct segment *charpath=NULL; /* the path for this character */
struct segment *tmppath1=NULL;
struct segment *tmppath2=NULL;
struct segment *tmppath3=NULL;
struct segment *tmppath4=NULL;
/* set the global font pointer to the address of already allocated
structure and setup pointers*/
FontP=Font_Ptr;
CharStringsDictP = FontP->CharStringsP;
SubrsArrayP = &(FontP->Subrs);
charnameP = &CodeName;
charnameP->len = strlen((char*)charname);
charnameP->data.stringP = charname;
strncpy( (char *)CurCharName, (char *)charnameP->data.stringP, charnameP->len);
CurCharName[charnameP->len]='\0';
/* search the chars string for this charname as key */
basechar = SearchDictName(CharStringsDictP,charnameP);
if (basechar<=0) {
/* Check first, whether a char in question is a composite char */
if ((i=isCompositeChar( FontID, CurCharName))>-1) {
/* i is now the index of the composite char definitions
(starting at 0). At this point it is clear that AFM-info
must be present -> fetch first component of composite char. */
pAFMData=pFontBase->pFontArray[FontID].pAFMData;
charnameP->len=strlen( pAFMData->ccd[i].pieces[0].pccName);
charnameP->data.stringP=(unsigned char*)pAFMData->ccd[i].pieces[0].pccName;
numPieces=pAFMData->ccd[i].numOfPieces;
if ((basechar=SearchDictName(CharStringsDictP,charnameP))<=0) {
/* this is bad, AFM-file and font file do not match. This
will most probably lead to errors or inconsistencies later.
However, we substitute .notdef and inform the user via
logfile and T1_errno. */
sprintf( err_warn_msg_buf,
"Charstring \"%s\" needed to construct composite char \"%s\" not defined (FontID=%d)",
pAFMData->ccd[i].pieces[0].pccName,
pAFMData->ccd[i].ccName, FontID);
T1_PrintLog( "fontfcnB():", err_warn_msg_buf, T1LOG_WARNING);
T1_errno=T1ERR_COMPOSITE_CHAR;
}
}
}
if (basechar<=0) { /* This means the requested char is unknown or the
base char of a composite is not found ->
we substitute .notdef */
charnameP = &CodeName;
charnameP->len = 7;
charnameP->data.stringP = (unsigned char *) notdef;
basechar = SearchDictName(CharStringsDictP,charnameP);
localmode=FF_NOTDEF_SUBST;
/* Font must be completely damaged if it doesn't define a .notdef */
if (basechar<=0) {
*mode=FF_PARSE_ERROR;
return(NULL);
}
} /* if (basechar<=0) */
/* basechar is now the index of the base character in the CharStrings
dictionary */
/* we provide the Type1Char() procedure with the name of the character
to rasterize for debugging purposes */
strncpy( (char *)CurCharName, (char *)charnameP->data.stringP, charnameP->len);
CurCharName[charnameP->len]='\0';
/* get CharString and character path */
theStringP = &(CharStringsDictP[basechar].value);
tmppath2 = (struct segment *) Type1Char(FontP,S,theStringP,SubrsArrayP,NULL,
FontP->BluesP,mode,CurCharName);
/* if Type1Char reported an error, then return */
if ( *mode == FF_PARSE_ERROR || *mode==FF_PATH_ERROR)
return(NULL);
/* Defer rastering to later, we first have to handle the composite
symbols */
for (j=1; j<numPieces; j++) {
/* get composite symbol name */
charnameP->len=strlen( pAFMData->ccd[i].pieces[j].pccName);
charnameP->data.stringP=(unsigned char*)pAFMData->ccd[i].pieces[j].pccName;
/* get CharString definition */
if ((N=SearchDictName(CharStringsDictP,charnameP))<=0) {
/* handling of errors, see comments above ... */
sprintf( err_warn_msg_buf,
"Charstring \"%s\" needed to construct composite char \"%s\" not defined (FontID=%d)",
pAFMData->ccd[i].pieces[j].pccName,
pAFMData->ccd[i].ccName, FontID);
T1_PrintLog( "fontfcnB():", err_warn_msg_buf, T1LOG_WARNING);
charnameP = &CodeName;
charnameP->len = 7;
charnameP->data.stringP = (unsigned char *) notdef;
N = SearchDictName(CharStringsDictP,charnameP);
localmode=FF_NOTDEF_SUBST;
/* damaged Font */
if (N<=0) {
*mode=FF_PARSE_ERROR;
if (charpath!=NULL) {
KillPath( charpath);
}
return(NULL);
}
}
theStringP = &(CharStringsDictP[N].value);
tmppath1=(struct segment *)ILoc(S,
pAFMData->ccd[i].pieces[j].deltax,
pAFMData->ccd[i].pieces[j].deltay);
strncpy( (char *)CurCharName, (char *)charnameP->data.stringP, charnameP->len);
CurCharName[charnameP->len]='\0';
charpath=(struct segment *)Type1Char(FontP,S,theStringP,SubrsArrayP,NULL,
FontP->BluesP,mode,CurCharName);
/* return if Type1Char reports an error */
if ( *mode == FF_PARSE_ERROR || *mode==FF_PATH_ERROR)
return(NULL);
/* get escapement of current symbol */
currdisp=getDisplacement( charpath);
/* concat displacement and symbol path */
charpath=(struct segment *)Join(tmppath1,charpath);
/* for composite symbols we have to step back the char escapement.
this is, in order to be able to use accents that cause a
non zero displacement of the current point! We further have to
step back the displacement from composite char data. */
tmppath1=(struct segment *)t1_PathSegment( MOVETYPE, -currdisp.x, -currdisp.y);
tmppath3=(struct segment *)ILoc(S,
-pAFMData->ccd[i].pieces[j].deltax,
-pAFMData->ccd[i].pieces[j].deltay);
tmppath3=(struct segment *)Join(tmppath1,tmppath3);
/* create path, or, respectively, append to existing path */
if (tmppath4==NULL) {
tmppath4=(struct segment *)Join(charpath,tmppath3);
}
else {
charpath=(struct segment *)Join(charpath,tmppath3);
tmppath4=(struct segment *)Join(tmppath4,charpath);
}
}
/* concat composite symbols and base char */
if (tmppath4==NULL) { /* no previous composite symbols */
charpath=tmppath2; /* a simple char */
}
else {
charpath=(struct segment *)Join(tmppath4,tmppath2);
}
if (do_raster) {
/* fill with winding rule unless path was requested */
if (*mode != FF_PATH) {
charpath = (struct segment *)Interior(charpath,WINDINGRULE+CONTINUITY);
}
}
if (*mode==0)
*mode=localmode;
return((xobject) charpath);
}
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