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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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/* |
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* NeWS driver, by Isaac Kwo |
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* |
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* July 1990 |
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*/ |
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|
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#include <math.h> |
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#include "newsconstants.h" |
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#include "driver.h" |
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#include "nwsdev.h" |
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char inputbuffer[256]; |
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int pos; |
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float gamma[257]; |
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|
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static int nws_close(),nws_clear(),nws_painter(),nws_getclick(), |
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nws_printer(),nws_getinput(),nws_flush(),nws_errout(); |
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static struct driver nws_driver = |
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{ |
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nws_close,nws_clear,nws_painter,nws_getclick, |
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nws_printer,nws_getinput,nws_flush,1.0 |
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}; |
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|
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static int |
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nws_clear() |
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{ |
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cps_clear(); |
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} |
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|
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static int |
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nws_getclick(xp,yp) |
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int *xp,*yp; |
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{ |
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int key; |
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cps_getclick(xp,yp,&key); |
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nws_driver.inpready=0; |
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return(key); |
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} |
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|
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struct driver * |
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nws_init(name,id) /* initialize driver */ |
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char *name,*id; |
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{ |
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int wX,wY,wW,wH,i; |
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gamma[256]=1; |
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for(i=0;i<256;i++) |
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gamma[i]=minfrac+(1-minfrac)*pow(i/256.,1./gammacorrection); |
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ps_open_PostScript(); |
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getthebox(&wX,&wY,&wW,&wH); |
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if(wW<100)wW=100; |
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if(wH<100+textareaheight)wH=100+textareaheight; |
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cps_initcanvas |
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(wX,wY,wW,wH,(int)MB1,(int)MB2,(int)MB3); |
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nws_driver.xsiz=wW; |
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nws_driver.ysiz=wH-textareaheight; |
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nws_driver.inpready=0; |
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cmdvec=nws_printer; |
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if(wrnvec!=NULL)wrnvec=nws_errout; |
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return(&nws_driver); |
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} |
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|
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static int |
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nws_close() /* close the display */ |
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{ |
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cmdvec=NULL; |
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if(wrnvec!=NULL)wrnvec=stderr_v; |
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cps_cleanup(); |
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ps_flush_PostScript(); |
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ps_close_PostScript(); |
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} |
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|
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static int |
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nws_flush() /* flush output and check for keyboard input */ |
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{ |
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ps_flush_PostScript(); |
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isready(&(nws_driver.inpready)); |
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} |
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|
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static int |
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nws_errout(msg) /* output an error message */ |
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char *msg; /* my comments are so bogus */ |
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{ |
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stderr_v(msg); |
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nws_printer(msg); |
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} |
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|
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static int |
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nws_painter(col,xmin,ymin,xmax,ymax) |
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float col[3]; |
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int xmin,ymin,xmax,ymax; |
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{ |
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int i; |
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float col2[3]; |
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/* NeWS trashes the window if a float value less than 1/256 is sent |
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to it. Therefore, weed out all such values first */ |
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for(i=0;i<3;i++) |
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{ |
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col2[i]=col[i]; |
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if(col2[i]>1)col2[i]=1; |
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col2[i]=gamma[(int)(col2[i]*256)]; |
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} |
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box(xmin,ymin+textareaheight,xmax,ymax+textareaheight |
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,col2[0],col2[1],col2[2]); |
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} |
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|
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static int |
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nws_printer(orig) /* printer recognises \n as a linefeed */ |
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char *orig; |
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{ |
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char *m,*s,string[BUFSIZ]; /* s is for string and m is for message */ |
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m=s=string; |
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while((*(s++))=(*(orig++))); |
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s=string; |
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while(*s) |
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if(*s++=='\n') |
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{ |
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*(s-1)=0; |
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linefeed(m); |
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m=s; |
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} |
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printout(m); |
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} |
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|
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static int |
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mygetc() |
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{ |
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int key; |
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getkey(&key); |
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return(key); |
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} |
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static int |
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myputs(str) |
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char *str; |
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{ |
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char buf[2]; buf[1]=0; |
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for(;*str;str++) |
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switch(*str) |
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{ |
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case '\n': pos=0; linefeed(""); break; |
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case '\b': |
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buf[0]=inputbuffer[--pos]; |
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delete(buf); |
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break; |
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default: |
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buf[0]=inputbuffer[pos++]=(*str); |
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printout(buf); |
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break; |
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} |
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return(0); |
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} |
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static int |
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nws_getinput(s,prompt) |
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char s[BUFSIZ]; |
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{ |
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if(prompt)nws_printer(prompt); |
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startcomin(); |
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pos=0; |
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editline(s,mygetc,myputs); |
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endcomin(); |
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nws_driver.inpready=0; |
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} |
