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| Current File : //usr/src/contrib/groff/src/devices/grolbp/lbp.h |
// -*- C -*-
/* Copyright (C) 1994, 2000, 2001, 2003, 2004, 2005
Free Software Foundation, Inc.
Written by Francisco Andrés Verdú <pandres@dragonet.es>
groff is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
groff 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 General Public License along
with groff; see the file COPYING. If not, write to the Free Software
Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
/* This file contains a set of utility functions to use canon CAPSL printers
* (lbp-4 and lbp-8 series printers) */
#ifndef LBP_H
#define LBP_H
#include <stdio.h>
#include <stdarg.h>
static FILE *lbpoutput = NULL;
static FILE *vdmoutput = NULL;
static inline void
lbpinit(FILE *outfile)
{
lbpoutput = outfile;
}
static void
lbpprintf(const char *format, ... )
{ /* Taken from cjet */
va_list stuff;
va_start(stuff, format);
vfprintf(lbpoutput, format, stuff);
va_end(stuff);
}
static inline void
lbpputs(const char *data)
{
fputs(data,lbpoutput);
}
static inline void
lbpputc(unsigned char c)
{
fputc(c,lbpoutput);
}
static inline void
lbpsavestatus(int idx )
{
fprintf(lbpoutput,"\033[%d%%y",idx);
}
static inline void
lbprestorestatus(int idx )
{
fprintf(lbpoutput,"\033[%d%cz",idx ,'%');
}
static inline void
lbpsavepos(int idx)
{
fprintf(lbpoutput,"\033[1;%d;0x",idx);
}
static inline void
lbprestorepos(int idx)
{
fprintf(lbpoutput,"\033[0;%d;0x",idx);
}
static inline void
lbprestoreposx(int idx)
{
fprintf(lbpoutput,"\033[0;%d;1x",idx);
}
static inline void
lbpmoverel(int despl, char direction)
{
fprintf(lbpoutput,"\033[%d%c",despl,direction);
}
static inline void
lbplinerel(int width,int despl,char direction )
{
fprintf(lbpoutput,"\033[%d;0;9{\033[%d%c\033[9}",width,despl,direction);
}
static inline void
lbpmoveabs(int x, int y)
{
fprintf(lbpoutput,"\033[%d;%df",y,x);
}
static inline void
lbplineto(int x,int y, int width )
{
fprintf(lbpoutput,"\033[%d;0;9{",width);
lbpmoveabs(x,y);
fprintf(lbpoutput,"\033[9}\n");
}
static inline void
lbpruleabs(int x, int y, int hsize, int vsize)
{
lbpmoveabs(x,y);
fprintf(lbpoutput,"\033[0;9;000s");
lbpmoveabs(x+hsize,y+vsize);
fprintf(lbpoutput,"\033[9r");
}
static void vdmprintf(const char *format, ... );
static inline char *
vdmnum(int num,char *result)
{
char b1,b2,b3;
char *p = result;
int nm;
nm = abs(num);
/* First byte 1024 - 32768 */
b1 = ((nm >> 10) & 0x3F);
if (b1) *p++ = b1 | 0x40;
/* Second Byte 16 - 1024 */
b2 = ((nm >> 4) & 0x3F);
if ( b1 || b2) *p++= b2 | 0x40;
/* Third byte 0 - 15 */
b3 = ((nm & 0x0F) | 32);
if (num >= 0) b3 |= 16;
*p++ = b3;
*p = 0x00; /* End of the resulting string */
return result;
}
static inline void
vdmorigin(int newx, int newy)
{
char nx[4],ny[4];
vdmprintf("}\"%s%s\x1e",vdmnum(newx,nx),vdmnum(newy,ny));
}
static inline FILE *
vdminit(FILE *vdmfile)
{
char scale[4],size[4],lineend[4];
/* vdmoutput = tmpfile();*/
vdmoutput = vdmfile;
/* Initialize the VDM mode */
vdmprintf("\033[0&}#GROLBP\x1e!0%s%s\x1e$\x1e}F%s\x1e",\
vdmnum(-3,scale),vdmnum(1,size),vdmnum(1,lineend));
return vdmoutput;
}
static inline void
vdmend()
{
vdmprintf("}p\x1e");
}
static void
vdmprintf(const char *format, ... )
{ /* Taken from cjet */
va_list stuff;
if (vdmoutput == NULL) vdminit(tmpfile());
va_start(stuff, format);
vfprintf(vdmoutput, format, stuff);
va_end(stuff);
}
static inline void
vdmsetfillmode(int pattern,int perimeter, int inverted)
{
char patt[4],perim[4],
rot[4], /* rotation */
espejo[4], /* espejo */
inv[4]; /* Inverted */
vdmprintf("I%s%s%s%s%s\x1e",vdmnum(pattern,patt),\
vdmnum(perimeter,perim),vdmnum(0,rot),
vdmnum(0,espejo),vdmnum(inverted,inv));
}
static inline void
vdmcircle(int centerx, int centery, int radius)
{
char x[4],y[4],rad[4];
vdmprintf("5%s%s%s\x1e",vdmnum(centerx,x),vdmnum(centery,y),\
vdmnum(radius,rad));
}
static inline void
vdmaarc(int centerx, int centery, int radius,int startangle,int angle,int style,int arcopen)
{
char x[4],y[4],rad[4],stx[4],sty[4],styl[4],op[4];
vdmprintf("}6%s%s%s%s%s%s%s\x1e",vdmnum(arcopen,op),\
vdmnum(centerx,x),vdmnum(centery,y),\
vdmnum(radius,rad),vdmnum(startangle,stx),vdmnum(angle,sty),\
vdmnum(style,styl));
}
static inline void
vdmvarc(int centerx, int centery,int radius, int startx, int starty, int endx, int endy,\
int style,int arcopen)
{
char x[4],y[4],rad[4],stx[4],sty[4],enx[4],eny[4],styl[4],op[4];
vdmprintf("}6%s%s%s%s%s%s%s%s%s\x1e",vdmnum(arcopen,op),\
vdmnum(centerx,x),vdmnum(centery,y),\
vdmnum(radius,rad),vdmnum(startx,stx),vdmnum(starty,sty),\
vdmnum(endx,enx),vdmnum(endy,eny),vdmnum(style,styl));
}
static inline void
vdmellipse(int centerx, int centery, int radiusx, int radiusy,int rotation)
{
char x[4],y[4],radx[4],rady[4],rotat[4];
vdmprintf("}7%s%s%s%s%s\x1e\n",vdmnum(centerx,x),vdmnum(centery,y),\
vdmnum(radiusx,radx),vdmnum(radiusy,rady),\
vdmnum(rotation,rotat));
}
static inline void
vdmsetlinetype(int lintype)
{
char ltyp[4], expfact[4];
vdmprintf("E1%s%s\x1e",vdmnum(lintype,ltyp),vdmnum(1,expfact));
}
static inline void
vdmsetlinestyle(int lintype, int pattern,int unionstyle)
{
char patt[4],ltip[4],
rot[4], /* rotation */
espejo[4], /* espejo */
in[4]; /* Inverted */
vdmprintf("}G%s%s%s%s%s\x1e",vdmnum(lintype,ltip),\
vdmnum(pattern,patt),vdmnum(0,rot),
vdmnum(0,espejo),vdmnum(0,in));
vdmprintf("}F%s",vdmnum(unionstyle,rot));
}
static inline void
vdmlinewidth(int width)
{
char wh[4];
vdmprintf("F1%s\x1e",vdmnum(width,wh));
}
static inline void
vdmrectangle(int origx, int origy,int dstx, int dsty)
{
char xcoord[4],ycoord[4],sdstx[4],sdsty[4];
vdmprintf("}:%s%s%s%s\x1e\n",vdmnum(origx,xcoord),vdmnum(dstx,sdstx),\
vdmnum(origy,ycoord),vdmnum(dsty,sdsty));
}
static inline void
vdmpolyline(int numpoints, int *points)
{
int i,*p = points;
char xcoord[4],ycoord[4];
if (numpoints < 2) return;
vdmprintf("1%s%s",vdmnum(*p,xcoord),vdmnum(*(p+1),ycoord));
p += 2;
for (i = 1; i < numpoints ; i++) {
vdmprintf("%s%s",vdmnum(*p,xcoord),vdmnum(*(p+1),ycoord));
p += 2;
} /* for */
vdmprintf("\x1e\n");
}
static inline void
vdmpolygon(int numpoints, int *points)
{
int i,*p = points;
char xcoord[4],ycoord[4];
if (numpoints < 2) return;
vdmprintf("2%s%s",vdmnum(*p,xcoord),vdmnum(*(p+1),ycoord));
p += 2;
for (i = 1; i < numpoints ; i++) {
vdmprintf("%s%s",vdmnum(*p,xcoord),vdmnum(*(p+1),ycoord));
p += 2;
} /* for */
vdmprintf("\x1e\n");
}
/************************************************************************
* Highter level auxiliary functions *
************************************************************************/
static inline int
vdminited()
{
return (vdmoutput != NULL);
}
static inline void
vdmline(int startx, int starty, int sizex, int sizey)
{
int points[4];
points[0] = startx;
points[1] = starty;
points[2] = sizex;
points[3] = sizey;
vdmpolyline(2,points);
}
/*#define THRESHOLD .05 */ /* inch */
#define THRESHOLD 1 /* points (1/300 inch) */
static inline void
splinerel(double px,double py,int flush)
{
static int lx = 0 ,ly = 0;
static double pend = 0.0;
static int dy = 0, despx = 0, despy = 0, sigpend = 0;
int dxnew = 0, dynew = 0, sg;
char xcoord[4],ycoord[4];
double npend ;
if (flush == -1) {lx = (int)px; ly = (int)py; return;}
if (flush == 0) {
dxnew = (int)px -lx;
dynew = (int)py -ly;
if ((dxnew == 0) && (dynew == 0)) return;
sg = (dxnew < 0)? -1 : 0;
/* fprintf(stderr,"s (%d,%d) (%d,%d)\n",dxnew,dynew,despx,despy);*/
if (dynew == 0) {
despx = dxnew;
if ((sg == sigpend) && (dy == 0)){
return;
}
dy = 0;
}
else {
dy = 1;
npend = (1.0*dxnew)/dynew;
if (( npend == pend) && (sigpend == sg))
{ despy = dynew; despx = dxnew; return; }
else
{ sigpend = sg;
pend = npend;
} /* else (( npend == pend) && ... */
} /* else (if (dynew == 0)) */
} /* if (!flush ) */
/* if we've changed direction we must draw the line */
/* fprintf(stderr," (%d) %.2f,%.2f\n",flush,(float)px,(float)py);*/
if ((despx != 0) || (despy != 0)) vdmprintf("%s%s",vdmnum(despx,xcoord),\
vdmnum(despy,ycoord));
/*if ((despx != 0) || (despy != 0)) fprintf(stderr,"2
*%d,%d\n",despx,despy);*/
if (flush) {
dxnew = dy = despx = despy = 0;
return;
} /* if (flush) */
dxnew -= despx;
dynew -= despy;
if ((dxnew != 0) || (dynew != 0)) vdmprintf("%s%s",vdmnum(dxnew,xcoord),\
vdmnum(dynew,ycoord));
/* if ((dxnew != 0) || (dynew != 0)) fprintf(stderr,"3
* %d,%d\n",dxnew,dynew);*/
lx = (int)px; ly = (int)py;
dxnew = dy = despx = despy = 0;
}
/**********************************************************************
* The following code to draw splines is adapted from the transfig package
*/
static void
quadratic_spline(double a_1, double b_1, double a_2, double b_2, \
double a_3, double b_3, double a_4, double b_4)
{
double x_1, y_1, x_4, y_4;
double x_mid, y_mid;
x_1 = a_1; y_1 = b_1;
x_4 = a_4; y_4 = b_4;
x_mid = (a_2 + a_3)/2.0;
y_mid = (b_2 + b_3)/2.0;
if ((fabs(x_1 - x_mid) < THRESHOLD)
&& (fabs(y_1 - y_mid) < THRESHOLD)) {
splinerel(x_mid, y_mid, 0);
/* fprintf(tfp, "PA%.4f,%.4f;\n", x_mid, y_mid);*/
}
else {
quadratic_spline(x_1, y_1, ((x_1+a_2)/2.0), ((y_1+b_2)/2.0),
((3.0*a_2+a_3)/4.0), ((3.0*b_2+b_3)/4.0), x_mid, y_mid);
}
if ((fabs(x_mid - x_4) < THRESHOLD)
&& (fabs(y_mid - y_4) < THRESHOLD)) {
splinerel(x_4, y_4, 0);
/* fprintf(tfp, "PA%.4f,%.4f;\n", x_4, y_4);*/
}
else {
quadratic_spline(x_mid, y_mid,
((a_2+3.0*a_3)/4.0), ((b_2+3.0*b_3)/4.0),
((a_3+x_4)/2.0), ((b_3+y_4)/2.0), x_4, y_4);
}
}
#define XCOORD(i) numbers[(2*i)]
#define YCOORD(i) numbers[(2*i)+1]
static void
vdmspline(int numpoints, int o_x, int o_y, int *numbers)
{
double cx_1, cy_1, cx_2, cy_2, cx_3, cy_3, cx_4, cy_4;
double x_1, y_1, x_2, y_2;
char xcoord[4],ycoord[4];
int i;
/*p = s->points;
x_1 = p->x/ppi;*/
x_1 = o_x;
y_1 = o_y;
/* p = p->next;
x_2 = p->x/ppi;
y_2 = p->y/ppi;*/
x_2 = o_x + XCOORD(0);
y_2 = o_y + YCOORD(0);
cx_1 = (x_1 + x_2)/2.0;
cy_1 = (y_1 + y_2)/2.0;
cx_2 = (x_1 + 3.0*x_2)/4.0;
cy_2 = (y_1 + 3.0*y_2)/4.0;
/* fprintf(stderr,"Spline %d (%d,%d)\n",numpoints,(int)x_1,(int)y_1);*/
vdmprintf("1%s%s",vdmnum((int)x_1,xcoord),vdmnum((int)y_1,ycoord));
splinerel(x_1,y_1,-1);
splinerel(cx_1,cy_1,0);
/* fprintf(tfp, "PA%.4f,%.4f;PD%.4f,%.4f;\n",
x_1, y_1, cx_1, cy_1);*/
/*for (p = p->next; p != NULL; p = p->next) {*/
for (i = 1; i < (numpoints); i++) {
x_1 = x_2;
y_1 = y_2;
/* x_2 = p->x/ppi;
y_2 = p->y/ppi;*/
x_2 = x_1 + XCOORD(i);
y_2 = y_1 + YCOORD(i);
cx_3 = (3.0*x_1 + x_2)/4.0;
cy_3 = (3.0*y_1 + y_2)/4.0;
cx_4 = (x_1 + x_2)/2.0;
cy_4 = (y_1 + y_2)/2.0;
/* fprintf(stderr,"Point (%d,%d) - (%d,%d)\n",(int)x_1,(int)(y_1),(int)x_2,(int)y_2);*/
quadratic_spline(cx_1, cy_1, cx_2, cy_2, cx_3, cy_3, cx_4, cy_4);
cx_1 = cx_4;
cy_1 = cy_4;
cx_2 = (x_1 + 3.0*x_2)/4.0;
cy_2 = (y_1 + 3.0*y_2)/4.0;
}
x_1 = x_2;
y_1 = y_2;
/* p = s->points->next;
x_2 = p->x/ppi;
y_2 = p->y/ppi;*/
x_2 = o_x + XCOORD(0);
y_2 = o_y + YCOORD(0);
cx_3 = (3.0*x_1 + x_2)/4.0;
cy_3 = (3.0*y_1 + y_2)/4.0;
cx_4 = (x_1 + x_2)/2.0;
cy_4 = (y_1 + y_2)/2.0;
splinerel(x_1, y_1, 0);
splinerel(x_1, y_1, 1);
/*vdmprintf("%s%s",vdmnum((int)(x_1-lx),xcoord),\
vdmnum((int)(y_1-ly),ycoord));*/
vdmprintf("\x1e\n");
/* fprintf(tfp, "PA%.4f,%.4f;PU;\n", x_1, y_1);*/
}
#endif