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/*
window.c:
Copyright (C) 1991 Barry Vercoe, John ffitch
This file is part of Csound.
The Csound Library 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 2.1 of the License, or (at your option) any later version.
Csound 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
*/
#include "cs.h" /* WINDOW.C */
#include "cwindow.h" /* graph window mgr */
#include "winEPS.h" /* PostSCript routines */
/* dpwe 16may90 */
extern OPARMS O;
static void (*makeFn)(WINDAT*, char*); /* pointer to window make fn - */
extern void MakeAscii(WINDAT *, char *);/* either teletype */
extern void MakeGraph(WINDAT *,char *); /* or some graphics system */
static void (*drawFn)(WINDAT *); /* pointer to appropriate drawing fn */
extern void DrawAscii(WINDAT *);
extern void DrawGraph(WINDAT *);
static void (*killFn)(WINDAT *); /* pointer to window destroy fn */
extern void KillAscii(WINDAT *);
extern void KillGraph(WINDAT *);
void (*mkxyFn)(XYINDAT *, MYFLT, MYFLT); /* pointer to xyinput window creator */
void MkXYDummy(XYINDAT *, MYFLT, MYFLT);
extern void MakeXYin(XYINDAT *, MYFLT, MYFLT);
void (*rdxyFn)(XYINDAT *); /* pointer to xyinput window reader */
void RdXYDummy(XYINDAT *);
extern void ReadXYin(XYINDAT *);
static int (*exitFn)(void) = NULL; /* pointer to window last exit fn - returns 0 to exit immediately */
extern int ExitGraph(void);
void DummyFn2(WINDAT *p, char *s) /* somewhere to invoke for no display */
{
IGN(p); IGN(s);
}
void DummyFn1(WINDAT *p) /* somewhere to invoke for no display */
{
IGN(p);
}
int DummyRFn(void) /* somewhere to invoke that returns 1 (!) for dummy exit fn */
{
return(0); /* Used to be 1 but seems silly (MR/JPff) */
}
void MkXYDummy(XYINDAT *wdptr, MYFLT x, MYFLT y) /* initial proportions */
{
wdptr->windid = 0; /* xwin = MakeWindow(1); */
wdptr->down = 0; /* by def released after Make */
wdptr->m_x = 0;
wdptr->m_y = 0;
wdptr->x = x; wdptr->y = y;
}
void RdXYDummy(XYINDAT *wdptr)
{
IGN(wdptr);
/* wdptr->m_x = m_x; wdptr->m_y = m_y;
wdptr->x = ((MYFLT)m_x-gra_x)/(MYFLT)gra_w;
wdptr->y = ((MYFLT)m_y-gra_y)/(MYFLT)gra_h;
*/
}
void dispinit(void) /* called once on initialisation of program to */
{ /* choose between teletype or bitmap graphics */
if (!O.displays) {
printf(Str(X_705,"displays suppressed\n"));
makeFn = DummyFn2;
drawFn = DummyFn1;
killFn = DummyFn1;
mkxyFn = MkXYDummy;
rdxyFn = RdXYDummy;
exitFn = DummyRFn;
}
#ifdef WINDOWS
else if (!O.graphsoff && Graphable()) {
/* provided by window driver: is this session able? */
makeFn = MakeGraph;
drawFn = DrawGraph;
killFn = KillGraph;
mkxyFn = MakeXYin;
rdxyFn = ReadXYin;
exitFn = ExitGraph;
}
#endif
else {
printf(Str(X_820,"graphics %s, ascii substituted\n"),
(O.graphsoff)? Str(X_1250,"suppressed") : Str(X_1078,"not supported on this terminal"));
makeFn = MakeAscii;
drawFn = DrawAscii;
killFn = KillAscii;
mkxyFn = MkXYDummy;
rdxyFn = RdXYDummy;
exitFn = DummyRFn;
}
}
void dispset( /* setup a new window */
WINDAT *wdptr, /* & init the data struct */
MYFLT *fdata,
long npts,
char *caption,
int waitflg,
char *label)
{
char *s = caption;
char *t = wdptr->caption;
char *tlim = t + CAPSIZE - 1;
if (!O.displays) return; /* return if displays disabled */
if (!wdptr->windid) { /* if no window defined for this str */
(*makeFn)(wdptr,label); /* create one */
if (O.postscript)
PS_MakeGraph(wdptr,label); /* open PS file + write header */
}
wdptr->fdata = fdata; /* init remainder of data structure */
wdptr->npts = npts;
while (*s != '\0' && t < tlim)
*t++ = *s++; /* (copy the caption) */
*t = '\0';
wdptr->waitflg = waitflg;
wdptr->polarity = (short)NOPOL;
wdptr->max = FL(0.0);
wdptr->min = FL(0.0);
wdptr->absmax = FL(0.0);
wdptr->oabsmax = FL(0.0);
wdptr->danflag = 0;
}
void dispkill(WINDAT *wdptr)
{
/**
* Fixed bug - used to throw an exception if killFn was null.
*/
if (killFn) {
(*killFn)(wdptr);
}
}
int dispexit(void)
{
if (O.postscript) PS_ExitGraph(); /* Write trailer to PostScript file */
if (exitFn!=NULL)
return (*exitFn)(); /* prompt for exit from last active window */
else
return 0;
}
void display(WINDAT *wdptr) /* prepare a MYFLT array, then call the */
/* graphing fn */
{
MYFLT *fp, *fplim;
MYFLT max, min, absmax, fval;
int pol;
if (!O.displays) return; /* displays disabled? return */
fp = wdptr->fdata;
fplim = fp + wdptr->npts;
for (max = *fp++, min = max; fp < fplim; ) { /* find max & min values */
if ((fval = *fp++) > max) max = fval;
else if (fval < min) min = fval;
}
absmax = (-min > max )? (-min):max;
wdptr->max = max; /* record most pos and most */
wdptr->min = min; /* neg this array of data */
wdptr->absmax = absmax; /* record absmax this data */
if (absmax > wdptr->oabsmax)
wdptr->oabsmax = absmax; /* & absmax over life of win */
pol = wdptr->polarity; /* adjust polarity flg for life of win */
if (pol == (short)NOPOL) {
if (max > 0. && min < 0.) pol = (short)BIPOL;
else if (max <= 0.&& min <0.) pol = (short)NEGPOL;
else pol = (short)POSPOL;
}
else if (pol == (short)POSPOL && min < 0) pol = (short)BIPOL;
else if (pol == (short)NEGPOL && max > 0) pol = (short)BIPOL;
wdptr->polarity = pol;
(*drawFn)(wdptr); /* now graph the function */
if (O.postscript) PS_DrawGraph(wdptr);/* Write postscript code */
}
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