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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., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "csoundCore.h" /* WINDOW.C */
#include "cwindow.h" /* graph window mgr */
#include "winEPS.h" /* PostSCript routines */
/* dpwe 16may90 */
extern OENTRY* find_opcode_new(CSOUND*, char*, char*, char*);
extern void MakeAscii(CSOUND *, WINDAT *, const char *);
extern void DrawAscii(CSOUND *, WINDAT *);
extern void KillAscii(CSOUND *, WINDAT *);
/* somewhere to invoke for no display */
static void DummyFn1(CSOUND *csound, WINDAT *p, const char *s)
{
IGN(csound); IGN(p); IGN(s);
}
/* somewhere to invoke for no display */
static void DummyFn2(CSOUND *csound, WINDAT *p)
{
IGN(csound); IGN(p);
}
/* somewhere to invoke that returns 1 (!) for dummy exit fn */
/* Used to be 1 but seems silly (MR/JPff) */
static int DummyFn3(CSOUND *csound)
{
IGN(csound);
return 0;
}
/* initial proportions */
/* called once on initialisation of program to */
/* choose between teletype or bitmap graphics */
void dispinit(CSOUND *csound)
{
OPARMS O;
csound->GetOParms(csound, &O);
if (O.displays && !(O.graphsoff || O.postscript)) {
if (!csound->isGraphable_)
find_opcode_new(csound, "FLrun", NULL, NULL); /* load FLTK for displays */
if (csound->isGraphable_)
return; /* provided by window driver: is this session able? */
}
if (!O.displays) {
if(csound->oparms->msglevel || csound->oparms->odebug)
csound->Message(csound, Str("displays suppressed\n"));
csound->csoundMakeGraphCallback_ = DummyFn1;
csound->csoundDrawGraphCallback_ = DummyFn2;
csound->csoundKillGraphCallback_ = DummyFn2;
}
else {
if (csound->csoundDrawGraphCallback_ == NULL){
// if callbacks are not set by host
if(csound->oparms->msglevel ||csound->oparms->odebug)
csound->Message(csound, Str("graphics %s, ascii substituted\n"),
((O.graphsoff || O.postscript) ?
Str("suppressed")
: Str("not supported on this terminal")));
csound->csoundMakeGraphCallback_ = MakeAscii;
csound->csoundDrawGraphCallback_ = DrawAscii;
csound->csoundKillGraphCallback_ = KillAscii;
}
}
csound->csoundExitGraphCallback_ = DummyFn3;
}
void dispset(CSOUND *csound, /* setup a new window */
WINDAT *wdptr, /* & init the data struct */
MYFLT *fdata,
int32 npts,
char *caption,
int waitflg,
char *label)
{
OPARMS O;
char *s = caption;
char *t = wdptr->caption;
char *tlim = t + CAPSIZE - 1;
csound->GetOParms(csound, &O);
if (!O.displays) return; // return if displays disabled
wdptr->fdata = fdata; // init remainder of data structure
wdptr->npts = npts;
while (*s != '\0' && t < tlim)
*t++ = *s++; // (copy the caption)
*t = '\0';
// if no window defined for this str, create one
if (!wdptr->windid && csound->csoundMakeGraphCallback_ != NULL) {
csound->csoundMakeGraphCallback_(csound, wdptr, label);
if (O.postscript)
PS_MakeGraph(csound, wdptr, label);
}
wdptr->waitflg = waitflg;
wdptr->polarity = (int16)NOPOL;
wdptr->max = FL(0.0);
wdptr->min = FL(0.0);
wdptr->absmax = FL(0.0);
wdptr->oabsmax = FL(0.0);
wdptr->danflag = 0;
}
int dispexit(CSOUND *csound)
{
OPARMS O;
csound->GetOParms(csound, &O);
if (O.postscript)
PS_ExitGraph(csound); /* Write trailer to PostScript file */
/* prompt for exit from last active window */
int ret = -1;
if (csound->csoundExitGraphCallback_) {
ret = csound->csoundExitGraphCallback_(csound);
}
return ret;
}
void display(CSOUND *csound, WINDAT *wdptr) /* prepare a MYFLT array, then */
/* call the graphing fn */
{
MYFLT *fp, *fplim;
MYFLT max, min, absmax, fval;
int pol;
OPARMS O;
csound->GetOParms(csound, &O);
if (!O.displays) return; /* displays disabled? return */
fp = wdptr->fdata;
if(fp == NULL) return;
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 */
/* VL: absmax needs to be updated at every display in some cases */
if (wdptr->absflag || absmax > wdptr->oabsmax)
wdptr->oabsmax = absmax; /* & absmax over life of win */
pol = wdptr->polarity; /* adjust polarity flg for life of win */
if (pol == (int16)NOPOL) {
if (max > FL(0.0) && min < FL(0.0)) pol = (int16)BIPOL;
else if (max <= FL(0.0) && min <FL(0.0)) pol = (int16)NEGPOL;
else pol = (int16)POSPOL;
}
else if (pol == (int16)POSPOL && min < FL(0.0)) pol = (int16)BIPOL;
else if (pol == (int16)NEGPOL && max > FL(0.0)) pol = (int16)BIPOL;
wdptr->polarity = pol;
if (O.odebug) csound->Message(csound, " calling draw callback \n");
/* now graph the function */
csound->csoundDrawGraphCallback_(csound, wdptr);
/* Write postscript code */
if (O.postscript)
PS_DrawGraph(csound, wdptr);
}
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