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music.c
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music.c
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/*
* Copyright (C) 1996,1997,1998 Michael Methfessel
*
* This file is part of abc2ps.
*
* abc2ps is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <string.h>
#include <ctype.h>
#include "abc2ps.h"
#include "buffer.h"
#include "parse.h"
#include "subs.h"
#include "util.h"
#include "pssubs.h"
#include "style.h"
#include "format.h"
#include "music.h"
/* subroutines connected with output of music */
/* ----- nwid ----- */
/* Sets the prefered width for a note depending on the duration.
Return value is default space on right and left side.
Function is determined by values at 0, 1/2, 1.
Return value is 1.0 for quarter note. */
float nwid (float dur)
{
float a,b,x,p,x0,p0;
a=2*(f1p-2*f5p+f0p);
b=f1p-f0p-a;
x = dur/(float)BASE;
p = a*x*x + b*x + f0p;
x0 = 0.25;
p0 = a*x0*x0 + b*x0 + f0p;
p = p/p0;
return p;
}
/* ----- xwid -- --- */
/* same as nwid but for stretched system */
float xwid (float dur)
{
float a,b,x,p,x0,p0;
a=2*(f1x-2*f5x+f0x);
b=f1x-f0x-a;
x = dur/(float)BASE;
p = a*x*x + b*x + f0x;
x0 = 0.25;
p0 = a*x0*x0 + b*x0 + f0x;
p = p/p0;
return p;
}
/* ----- next_note, prec_note ------ */
int next_note (k,n,symb)
int k,n;
struct SYMBOL symb[];
{
int i;
for (i=k+1;i<n;i++) {
if ((symb[i].type==NOTE)||(symb[i].type==REST)) return i;
}
return -1;
}
int prec_note (k,n,symb)
int k,n;
struct SYMBOL symb[];
{
int i;
for (i=k-1;i>=0;i--) {
if ((symb[i].type==NOTE)||(symb[i].type==REST)) return i;
}
return -1;
}
/* ----- followed_by_note ------ */
int followed_by_note (k,n,symb)
int k,n;
struct SYMBOL symb[];
{
int i;
for (i=k+1;i<n;i++) {
switch (symb[i].type) {
case INVISIBLE:
break;
case NOTE:
case REST:
return i;
break;
default:
return -1;
}
}
return -1;
}
/* ----- preceded_by_note ------ */
int preceded_by_note (k,n,symb)
int k,n;
struct SYMBOL symb[];
{
int i;
for (i=k-1;i>=0;i--) {
switch (symb[i].type) {
case INVISIBLE:
break;
case NOTE:
case REST:
return i;
break;
default:
return -1;
}
}
return -1;
}
void xch (i,j) /* sub to exchange two integers */
int *i,*j;
{
int k;
k=*i;
*i=*j;
*j=k;
}
/* ----- print_linetype ----------- */
void print_linetype (t)
int t;
{
if (t== COMMENT) printf("COMMENT\n");
else if (t== MUSIC) printf("MUSIC\n");
else if (t== TO_BE_CONTINUED) printf("TO_BE_CONTINUED\n");
else if (t== E_O_F) printf("E_O_F\n");
else if (t== INFO) printf("INFO\n");
else if (t== TITLE) printf("TITLE\n");
else if (t== METER) printf("METER\n");
else if (t== PARTS) printf("PARTS\n");
else if (t== KEY) printf("KEY\n");
else if (t== XREF) printf("XREF\n");
else if (t== DLEN) printf("DLEN\n");
else if (t== HISTORY) printf("HISTORY\n");
else if (t== TEMPO) printf("TEMPO\n");
else if (t== BLANK) printf("BLANK\n");
else if (t== VOICE) printf("VOICE\n");
else printf("UNKNOWN LINE TYPE\n");
}
/* ----- print_syms: show sym properties set by parser ------ */
void print_syms(num1,num2,symb)
int num1,num2;
struct SYMBOL symb[];
{
int i,t,j,y;
char dsym[21] = {' ','~','.','J','M','H','u','v','R','T','K'};
char bsym[10] = {'-', '1' ,'2', '3', '4', '5', '6', '7', '8', '9'};
char str[21];
printf ("\n---------- Symbol list ----------\n");
printf ("word slur eol num description\n");
for (i=num1;i<num2;i++) {
printf (" %c %c %c %c %c ",
bsym[symb[i].word_st], bsym[symb[i].word_end],
bsym[symb[i].slur_st], bsym[symb[i].slur_end],
bsym[symb[i].eoln] );
printf ("%4d ", i);
t=symb[i].type;
switch (t) {
case NOTE:
case REST:
if (t==NOTE) printf ("NOTE ");
if (t==REST) printf ("REST ");
if (symb[i].npitch>1) printf (" [");
for (j=0;j<symb[i].npitch;j++) {
printf (" ");
if (symb[i].accs[j]==A_SH) printf ("^");
if (symb[i].accs[j]==A_NT) printf ("=");
if (symb[i].accs[j]==A_FT) printf ("_");
if (symb[i].accs[j]==A_DS) printf ("^^");
if (symb[i].accs[j]==A_DF) printf ("__");
y=3*(symb[i].pits[j]-18)+symb[i].yadd;
strcpy (str,"z");
if (t==NOTE) symbolic_pitch (symb[i].pits[j],str);
printf ("%s(%d)", str, symb[i].lens[j]);
}
if (symb[i].npitch>1) printf (" ]");
if (symb[i].p_plet)
printf (" (%d:%d:%d", symb[i].p_plet,symb[i].q_plet,symb[i].r_plet);
if (strlen(symb[i].text)>0) printf (" \"%s\"", symb[i].text);
if (symb[i].dc.n>0) {
printf (" deco ");
for (j=0;j<symb[i].dc.n;j++)
printf ("%c",dsym[symb[i].dc.t[j]]);
}
if (symb[i].gr.n>0) {
printf (" grace ");
for (j=0;j<symb[i].gr.n;j++) {
if (j>0) printf ("-");
if (symb[i].gr.a[j]==A_SH) printf ("^");
if (symb[i].gr.a[j]==A_NT) printf ("=");
if (symb[i].gr.a[j]==A_FT) printf ("_");
symbolic_pitch (symb[i].gr.p[j],str);
printf ("%s",str);
}
}
break;
case BAR:
printf ("BAR ======= ");
if (symb[i].u==B_SNGL) printf ("single");
if (symb[i].u==B_DBL) printf ("double");
if (symb[i].u==B_LREP) printf ("left repeat");
if (symb[i].u==B_RREP) printf ("right repeat");
if (symb[i].u==B_DREP) printf ("double repeat");
if (symb[i].u==B_FAT1) printf ("thick-thin");
if (symb[i].u==B_FAT2) printf ("thin-thick");
if (symb[i].u==B_INVIS) printf ("invisible");
if (symb[i].v) printf (", ending %d", symb[i].v);
if (strlen(symb[i].text)>0) printf (", label \"%s\"",symb[i].text);
break;
case CLEF:
if (symb[i].u==TREBLE) printf ("CLEF treble");
if (symb[i].u==TREBLE8) printf ("CLEF treble8");
if (symb[i].u==BASS) printf ("CLEF bass");
if (symb[i].u==ALTO) printf ("CLEF alto");
break;
case TIMESIG:
printf ("TIMESIG ");
if (symb[i].w==1) printf ("C");
else if (symb[i].w==2) printf ("C|");
else printf ("%d/%d", symb[i].u,symb[i].v);
break;
case KEYSIG:
printf ("KEYSIG ");
if (symb[i].t==A_SH) printf ("sharps ");
if (symb[i].t==A_FT) printf ("flats ");
printf ("%d to %d", symb[i].u,symb[i].v);
if (symb[i].w <= symb[i].v)
printf (", neutrals from %d", symb[i].w);
break;
case INVISIBLE:
printf ("INVIS ");
break;
default:
printf ("UNKNOWN ");
break;
}
printf ("\n");
}
printf ("\n");
}
/* ----- print_vsyms: print symbols for all voices ----- */
void print_vsyms ()
{
int i;
printf("\n");
for (i=0;i<nvoice;i++) {
if (nvoice>1)
printf ("Voice <%s> (%d of %d)", voice[i].id,i,nvoice);
print_syms (0,voice[i].nsym,symv[i]);
}
}
/* ----- set_head_directions ----------- */
/* decide whether to shift heads to other side of stem on chords */
/* also position accidentals to avoid too much overlap */
void set_head_directions (s)
struct SYMBOL *s;
{
int i,n,nx,sig,d,da,shift,nac;
int i1,i2,m;
float dx,xx,xmn;
n=s->npitch;
sig=-1;
if (s->stem>0) sig=1;
for (i=0;i<n;i++) {
s->shhd[i]=0;
s->shac[i]=8;
if (s->head==H_OVAL) s->shac[i]+=3;
s->xmn=0;
s->xmx=0;
}
if (n<2) return;
/* sort heads by pitch */
for (;;) {
nx=0;
for (i=1;i<n;i++) {
if ( (s->pits[i]-s->pits[i-1])*sig>0 ) {
xch (&s->pits[i],&s->pits[i-1]);
xch (&s->lens[i],&s->lens[i-1]);
xch (&s->accs[i],&s->accs[i-1]);
xch (&s->sl1[i],&s->sl1[i-1]);
xch (&s->sl2[i],&s->sl2[i-1]);
xch (&s->ti1[i],&s->ti1[i-1]);
xch (&s->ti2[i],&s->ti2[i-1]);
nx++;
}
}
if (!nx) break;
}
shift=0; /* shift heads */
for (i=n-2;i>=0;i--) {
d=s->pits[i+1]-s->pits[i];
if (d<0) d=-d;
if ((d>=2) || (d==0))
shift=0;
else {
shift=1-shift;
if (shift) {
dx=7.8;
if (s->head==H_EMPTY) dx=7.8;
if (s->head==H_OVAL) dx=10.0;
if (s->stem==-1) s->shhd[i]=-dx;
else s->shhd[i]=dx;
}
}
if (s->shhd[i] < s->xmn) s->xmn = s->shhd[i];
if (s->shhd[i] > s->xmx) s->xmx = s->shhd[i];
}
shift=0; /* shift accidentals */
i1=0; i2=n-1;
if (sig<0) { i1=n-1; i2=0; }
for (i=i1; ; i=i+sig) { /* count down in terms of pitch */
xmn=0; /* left-most pos of a close head */
nac=99; /* relative pos of next acc above */
for (m=0;m<n;m++) {
xx=s->shhd[m];
d=s->pits[m]-s->pits[i];
da=ABS(d);
if ((da<=5) && (s->shhd[m]<xmn)) xmn=s->shhd[m];
if ((d>0) && (da<nac) && s->accs[m]) nac=da;
}
s->shac[i]=8.5-xmn+s->shhd[i]; /* aligns accidentals in column */
if (s->head==H_EMPTY) s->shac[i] += 1.0;
if (s->head==H_OVAL) s->shac[i] += 3.0;
if (s->accs[i]) {
if (nac>=6) /* no overlap */
shift=0;
else if (nac>=4) { /* weak overlap */
if (shift==0) shift=1;
else shift=shift-1;
}
else { /* strong overlap */
if (shift==0) shift=2;
else if (shift==1) shift=3;
else if (shift==2) shift=1;
else if (shift==3) shift=0;
}
while (shift>=4) shift -=4;
s->shac[i] += 3*shift;
}
if (i==i2) break;
}
}
/* ----- set_minsyms: want at least one symbol in each voice --- */
void set_minsyms(ivc)
int ivc;
{
int n2;
n2=voice[ivc].nsym;
printf ("set_minsyms: n2=%d\n",n2);
if (n2>0) return;
symv[ivc][n2]=zsym;
symv[ivc][n2].type = INVISIBLE;
symv[ivc][n2].u = 3;
symv[ivc][n2].v = 3;
symv[ivc][n2].w = 3;
voice[ivc].nsym++;
}
/* ----- set_sym_chars: set symbol characteristics --- */
void set_sym_chars (n1,n2,symb)
int n1,n2;
struct SYMBOL symb[];
{
int i,np,m,ymn,ymx;
float yav,yy;
for (i=n1;i<n2;i++) {
if ((symb[i].type==NOTE)||(symb[i].type==REST)) {
symb[i].y=3*(symb[i].pits[0]-18)+symb[i].yadd;
if (symb[i].type==REST) symb[i].y=12;
yav=0;
ymn=1000;
ymx=-1000;
np=symb[i].npitch;
for (m=0;m<np;m++) {
yy=3*(symb[i].pits[m]-18)+symb[i].yadd;
yav=yav+yy/np;
if (yy<ymn) ymn=yy;
if (yy>ymx) ymx=yy;
}
symb[i].ymn=ymn;
symb[i].ymx=ymx;
symb[i].yav=yav;
symb[i].ylo=ymn;
symb[i].yhi=ymx;
}
}
}
/* ----- set_beams: decide on beams ---- */
void set_beams (n1,n2,symb)
int n1,n2;
struct SYMBOL symb[];
{
int j,lastnote,start_flag;
/* separate words at notes without flags */
start_flag=0;
lastnote=-1;
for (j=n1;j<n2;j++) {
if (symb[j].type==NOTE) {
if (start_flag) {
symb[j].word_st=1;
start_flag=0;
}
if (symb[j].flags==0) {
if (lastnote>=0) symb[lastnote].word_end=1;
symb[j].word_st=1;
symb[j].word_end=1;
start_flag=1;
}
lastnote=j;
}
}
}
/* ----- set_stems: decide on stem directions and lengths ---- */
void set_stems (n1,n2,symb)
int n1,n2;
struct SYMBOL symb[];
{
int beam,j,k,n,stem,laststem;
float avg,slen,lasty,dy;
/* set stem directions; near middle, use previous direction */
beam=0;
laststem=0;
for (j=n1; j<n2; j++) {
if (symb[j].type!=NOTE) laststem=0;
if (symb[j].type==NOTE) {
symb[j].stem=0;
if (symb[j].len<WHOLE) symb[j].stem=1;
if (symb[j].yav>=12) symb[j].stem=-symb[j].stem;
if ((symb[j].yav>11) && (symb[j].yav<13) && (laststem!=0)) {
dy=symb[j].yav-lasty;
if ((dy>-7) && (dy<7)) symb[j].stem=laststem;
}
if (symb[j].word_st && (!symb[j].word_end)) { /* start of beam */
avg=0;
n=0;
for (k=j;k<n2;k++) {
if (symb[k].type==NOTE) {
avg=avg+symb[k].yav;
n++;
}
if (symb[k].word_end) break;
}
avg=avg/n;
stem=1;
if (avg>=12) stem=-1;
if ((avg>11) && (avg<13) && (laststem!=0)) stem=laststem;
beam=1;
}
if (beam) symb[j].stem=stem;
if (symb[j].word_end) beam=0;
if (bagpipe) symb[j].stem=-1;
if (symb[j].len>=WHOLE) symb[j].stem=0;
laststem=symb[j].stem;
if (symb[j].len>=HALF) laststem=0;
lasty=symb[j].yav;
}
}
/* shift notes in chords (need stem direction to do this) */
for (j=n1;j<n2;j++)
if (symb[j].type==NOTE) set_head_directions (&symb[j]);
/* set height of stem end, without considering beaming for now */
for (j=n1; j<n2; j++) if (symb[j].type==NOTE) {
slen=STEM;
if (symb[j].npitch>1) slen=STEM_CH;
if (symb[j].flags==3) slen += 4;
if (symb[j].flags==4) slen += 9;
if ((symb[j].flags>2) && (symb[j].stem==1)) slen -= 1;
if (symb[j].stem==1) {
symb[j].y=symb[j].ymn;
symb[j].ys=symb[j].ymx+slen;
}
else if (symb[j].stem==-1) {
symb[j].y=symb[j].ymx;
symb[j].ys=symb[j].ymn-slen;
}
else {
symb[j].y=symb[j].ymx;
symb[j].ys=symb[j].ymx;
}
}
}
/* ----- set_sym_times: set time axis; also count through bars ----- */
int set_sym_times (n1,n2,symb,meter0)
int n1,n2;
struct SYMBOL symb[];
struct METERSTR meter0;
{
int i,pp,qq,rr,meter1,meter2,count,bnum,lastb,bsave;
int qtab[] = {0,0,3,2,3,0,2,0,3,0};
float time,factor,fullmes;
meter1=meter0.meter1;
meter2=meter0.meter2;
lastb=bnum=0;
bsave=1;
time=0.0;
factor=1.0;
for (i=n1;i<n2;i++) {
symb[i].time=time;
/* count through bar numbers, put into symb.t */
if (symb[i].type==BAR) {
fullmes=(WHOLE*meter1)/meter2;
if (bnum==0) {
bnum=barinit;
if (fullmes<time+0.001) bnum++;
symb[i].t=bnum;
lastb=i;
}
else if (time-symb[lastb].time>=fullmes-0.001) {
bnum++;
while (symb[i+1].type==BAR) {i++; symb[i].time=time; }
symb[i].t=bnum;
lastb=i;
}
if (symb[i].v>1) {
bnum=bsave;
symb[i].t=0;
}
if (symb[i].v==1) bsave=bnum;
}
if ((symb[i].type==NOTE)||(symb[i].type==REST)) {
if (symb[i].p_plet) {
pp=symb[i].p_plet;
qq=symb[i].q_plet;
rr=symb[i].r_plet;
if (qq==0) {
qq=qtab[pp];
if (qq==0) {
qq=2;
if (meter1%3==0) qq=3;
}
}
factor=((float)qq)/((float)pp);
count=rr;
}
time=time+factor*symb[i].len;
if (count>0) count--;
if (count==0) factor=1;
}
if (symb[i].type==TIMESIG) { /* maintain meter as we go along */
meter1=symb[i].u;
meter2=symb[i].v;
}
}
return bnum;
}
/* ----- set_sym_widths: set widths and prefered space --- */
/* This routine sets the minimal left and right widths wl,wr
so that successive symbols are still separated when
no extra glue is put between them. It also sets the prefered
spacings pl,pr for good output and xl,xr for expanded layout.
All distances in pt relative to the symbol center. */
void set_sym_widths (ns1,ns2,symb,ivc)
int ns1,ns2,ivc;
struct SYMBOL symb[];
{
int i,n,j0,j,m,n1,n2,bt,k,sl,k1,k2,got_note,ok;
float xx,w,swfac,spc,dur,yy;
char t[81],tt[81];
swfac=1.0;
if (strstr(cfmt.vocalfont.name,"Times-Roman")) swfac=1.00;
if (strstr(cfmt.vocalfont.name,"Times-Bold")) swfac=1.05;
if (strstr(cfmt.vocalfont.name,"Helvetica")) swfac=1.10;
if (strstr(cfmt.vocalfont.name,"Helvetica-Bold")) swfac=1.15;
got_note=0;
for (i=ns1;i<ns2;i++) {
switch (symb[i].type) {
case INVISIBLE: /* empty space; shrink,space,stretch from u,v,w */
symb[i].wl=symb[i].wr=0.5*symb[i].u;
symb[i].pl=symb[i].pr=0.5*symb[i].v;
symb[i].xl=symb[i].xr=0.5*symb[i].w;
break;
case NOTE:
case REST:
got_note=1;
dur=symb[i].len;
symb[i].wl=symb[i].wr=4.5;
if (symb[i].head==H_EMPTY) {symb[i].wl=6.0; symb[i].wr=14.0;}
if (symb[i].head==H_OVAL) {symb[i].wl=8.0; symb[i].wr=18.0;}
symb[i].pl=symb[i].xl=symb[i].wl;
symb[i].pr=symb[i].xr=symb[i].wr;
/* room for shifted heads and accidental signs */
for (m=0;m<symb[i].npitch;m++) {
xx=symb[i].shhd[m];
AT_LEAST (symb[i].wr, xx+6);
AT_LEAST (symb[i].wl, -xx+6);
if (symb[i].accs[m]) {
xx=xx-symb[i].shac[m];
AT_LEAST (symb[i].wl, -xx+3);
}
AT_LEAST (symb[i].xl, -xx+3);
symb[i].pl=symb[i].wl;
symb[i].xl=symb[i].wl;
}
/* room for slide */
for (k=0;k<symb[i].dc.n;k++) {
if (symb[i].dc.t[k]==D_SLIDE) symb[i].wl += 10;
}
/* room for grace notes */
if (symb[i].gr.n>0) {
xx=GSPACE0;
if (symb[i].gr.a[0]) xx=xx+3.5;
for (j=1;j<symb[i].gr.n;j++) {
xx=xx+GSPACE;
if (symb[i].gr.a[j]) xx=xx+4;
}
symb[i].wl = symb[i].wl + xx+1;
symb[i].pl = symb[i].pl + xx+1;
symb[i].xl = symb[i].xl + xx+1;
}
/* space for flag if stem goes up on standalone note */
if (symb[i].word_st && symb[i].word_end)
if ((symb[i].stem==1) && symb[i].flags>0)
AT_LEAST (symb[i].wr, 12);
/* leave room for dots */
if (symb[i].dots>0) {
AT_LEAST (symb[i].wr,12+symb[i].xmx);
if (symb[i].dots>=2) symb[i].wr=symb[i].wr+3.5;
n=(int) symb[i].y;
/* special case: standalone with up-stem and flags */
if (symb[i].flags && (symb[i].stem==1) && !(n%6))
if ((symb[i].word_st==1) && (symb[i].word_end==1)) {
symb[i].wr=symb[i].wr+DOTSHIFT;
symb[i].pr=symb[i].pr+DOTSHIFT;
symb[i].xr=symb[i].xr+DOTSHIFT;
}
}
/* extra space when down stem follows up stem */
j0=preceded_by_note(i,ns2,symb);
if ((j0>=0) && (symb[j0].stem==1) && (symb[i].stem==-1))
AT_LEAST (symb[i].wl, 7);
/* make sure helper lines don't overlap */
if ((j0>=0) && (symb[i].y>27) && (symb[j0].y>27))
AT_LEAST (symb[i].wl, 7.5);
/* leave room guitar chord */
if (strlen(symb[i].text)>0) {
/* special case: guitar chord under ending 1 or 2 */
/* leave some room to the left of the note */
if ((i>0) && (symb[i-1].type==BAR)) {
bt=symb[i-1].v;
if (bt) AT_LEAST (symb[i].wl, 18);
}
/* rest is same for all guitar chord cases */
tex_str(symb[i].text,t,&w);
xx=cfmt.gchordfont.size*w;
xx=xx*1.05; /* extra space mainly for helvetica font */
spc=xx*GCHPRE;
k1=prec_note(i,ns2,symb);
k2=next_note(i,ns2,symb);
if (spc>8.0) spc=8.0;
if ((k1) && (strlen(symb[k1].text)>0))
AT_LEAST (symb[i].wl, spc);
if ((k2>0) && (strlen(symb[k2].text)>0))
AT_LEAST (symb[i].wr, xx-spc);
}
/* leave room for vocals under note */
for (j=0;j<NWLINE;j++) {
if (symb[i].wordp[j]) {
sl=tex_str(symb[i].wordp[j],t,&w);
xx=swfac*cfmt.vocalfont.size*(w+2*cwid(' '));
AT_LEAST (symb[i].wl,xx*VOCPRE);
AT_LEAST (symb[i].wr,xx*(1.0-VOCPRE));
}
}
AT_LEAST (symb[i].pl, symb[i].wl);
AT_LEAST (symb[i].xl, symb[i].wl);
AT_LEAST (symb[i].pr, symb[i].wr);
AT_LEAST (symb[i].xr, symb[i].wr);
break;
case BAR:
symb[i].wl=symb[i].wr=0;
if (symb[i].u==B_SNGL) symb[i].wl=symb[i].wr=3;
else if (symb[i].u==B_DBL) { symb[i].wl=7; symb[i].wr=4; }
else if (symb[i].u==B_LREP) { symb[i].wl=3; symb[i].wr=12; }
else if (symb[i].u==B_RREP) { symb[i].wl=12; symb[i].wr=3; }
else if (symb[i].u==B_DREP) symb[i].wl=symb[i].wr=12;
else if (symb[i].u==B_FAT1) { symb[i].wl=3; symb[i].wr=9; }
else if (symb[i].u==B_FAT2) { symb[i].wl=9; symb[i].wr=3; }
if (ivc==ivc0) { /* bar numbers and labels next */
ok=0;
if ((cfmt.barnums>0) && (symb[i].t%cfmt.barnums==0)) ok=1;
if (strlen(symb[i].text)>0) ok=1;
if (ok) {
if (strlen(symb[i].text)>0) {
tex_str(symb[i].text,t,&w);
xx=cfmt.barlabelfont.size*w*0.5;
}
else {
sprintf (tt,"%d",symb[i].t);
tex_str(tt,t,&w);
xx=cfmt.barnumfont.size*w*0.5;
}
yy=60;
if (!got_note) yy=0;
if (symb[i-1].type==NOTE) {
yy=symb[i-1].ymx;
if (symb[i-1].stem==1) yy=yy+26;
}
if (strlen(symb[i-1].text)>0) yy=60;
AT_LEAST (symb[i].wl, 2);
if (yy>BNUMHT-4.0) AT_LEAST (symb[i].wl, xx+1);
if (!got_note) AT_LEAST (symb[i].wl, xx+1);
yy=0;
if (symb[i+1].type==NOTE) yy=symb[i+1].ymx;
if (yy>BNUMHT-4.0) AT_LEAST (symb[i].wr, xx+2);
if (strlen(symb[i+1].text)>0) AT_LEAST (symb[i].wr, xx+4);
}
}
symb[i].pl=symb[i].wl;
symb[i].pr=symb[i].wr;
symb[i].xl=symb[i].wl;
symb[i].xr=symb[i].wr;
break;
case CLEF:
symb[i].wl=symb[i].wr=symb[i].xl=13.5;
symb[i].pl=symb[i].pr=symb[i].xr=11.5;
break;
case KEYSIG:
n1=symb[i].u;
n2=symb[i].v;
if (n2>=n1) {
symb[i].wl=2;
symb[i].wr=5*(n2-n1+1)+2;
symb[i].pl=symb[i].wl;
symb[i].pr=symb[i].wr;
symb[i].xl=symb[i].wl;
symb[i].xr=symb[i].wr;
}
else {
symb[i].wl=symb[i].pl=symb[i].xl=3;
symb[i].wr=symb[i].pr=symb[i].xr=3;
}
break;
case TIMESIG:
symb[i].wl=8+4*(strlen(symb[i].text)-1);
symb[i].wr=symb[i].wl+4;
symb[i].pl=symb[i].wl;
symb[i].pr=symb[i].wr;
symb[i].xl=symb[i].wl;
symb[i].xr=symb[i].wr;
break;
default:
printf (">>> cannot set width for sym type %d\n", symb[i].type);
symb[i].wl=symb[i].wr=symb[i].xl=0;
symb[i].pl=symb[i].pr=symb[i].xr=0;
break;
}
}
}
/* ----- contract_keysigs: delete duplicate keysigs at staff start ---- */
/* Depending on line breaks, a key and/or meter change can come
at the start of a staff. Solution: scan through symbols from start
of line as long as sym is a CLEF, KEYSIG, or TIMESIG. Remove all
these, but set flags so that set_initsyms will draw the
key and meter which result at the end of the scan. */
int contract_keysigs (ip1)
int ip1;
{
int i,k,v,t,n3,sf,jp1,m,mtop;
mtop=10000;
for (v=0;v<nvoice;v++) {
i=ip1;
m=0;
for (;;) {
m++;
k=xp[i].p[v];
if (k>=0) {
if (symv[v][k].type==CLEF) {
voice[v].key.ktype=symv[v][k].u;
symv[v][k].type=INVISIBLE;
}
else if (symv[v][k].type==KEYSIG) {
sf=symv[v][k].v;
n3=symv[v][k].w;
if (n3-1<sf) sf=n3-1;
t =symv[v][k].t;
if (t==A_FT) sf=-sf;
if (t==A_NT) sf=0;
voice[v].key.sf=sf;
symv[v][k].type=INVISIBLE;
}
else if (symv[v][k].type==TIMESIG) {
voice[v].meter.insert=1;
voice[v].meter.meter1=symv[v][k].u;
voice[v].meter.meter2=symv[v][k].v;
voice[v].meter.mflag =symv[v][k].w;
strcpy(voice[v].meter.top,symv[v][k].text);
symv[v][k].type=INVISIBLE;
}
else
break;
}
i=xp[i].next;
if (i==XP_END) {
i=xp[i].prec;
break;
}
}
if (m<mtop && i>=0) {mtop=m; jp1=i; }
}
/* set glue for first symbol */
xp[jp1].shrink = xp[jp1].wl+3;
xp[jp1].space = xp[jp1].wl+9;
xp[jp1].stretch= xp[jp1].wl+16;
return jp1;
}
/* ----- set_initsyms: set symbols at start of staff ----- */
int set_initsyms (v,wid0)
int v;
float *wid0;
{
int k,t,n;
float x;
k=0;
/* add clef */
sym_st[v][k]=zsym;
sym_st[v][k].type = CLEF;
sym_st[v][k].u = voice[ivc].key.ktype;
sym_st[v][k].v = 0;
k++;
/* add keysig */
sym_st[v][k]=zsym;
sym_st[v][k].type = KEYSIG;
n=voice[ivc].key.sf;
t=A_SH;
if (n<0) { n=-n; t=A_FT; }
sym_st[v][k].u = 1;
sym_st[v][k].v = n;
sym_st[v][k].w = 100;
sym_st[v][k].t = t;
k++;
/* add timesig */
if (voice[ivc].meter.insert) {
sym_st[v][k]=zsym;
sym_st[v][k].type = TIMESIG;
sym_st[v][k].u = voice[ivc].meter.meter1;
sym_st[v][k].v = voice[ivc].meter.meter2;
sym_st[v][k].w = voice[ivc].meter.mflag;
strcpy(sym_st[v][k].text,voice[ivc].meter.top);
k++;
voice[ivc].meter.insert=0;
}
if (voice[ivc].insert_btype) {
sym_st[v][k].type = BAR;
sym_st[v][k].u=voice[ivc].insert_btype;
sym_st[v][k].v=voice[ivc].insert_num;
sym_st[v][k].t=voice[ivc].insert_bnum;
strcpy(sym_st[v][k].text,voice[ivc].insert_text);
voice[ivc].insert_btype=0;
voice[ivc].insert_bnum=0;
k++;
}
n=k;
set_sym_widths (0,n,sym_st[v],ivc);
x=0;
for (k=0;k<n;k++) {
x=x+sym_st[v][k].wl;
sym_st[v][k].x=x;
x=x+sym_st[v][k].wr;
}
*wid0=x+voice[v].insert_space;
return n;
}
/* ----- print_poslist ----- */
void print_poslist ()
{
int i,n,typ,vv;
printf ("\n----------- xpos list -----------\n");
printf (" num ptr type time dur width tfac"
" shrk spac stre eol vptr\n");