/* Miscellaneous C routines used only in DOS Fractint. */ #include #include #ifndef XFRACT #include #include #include #endif #include #include #include #include #include #include #include "fractint.h" #include "fractype.h" #include "helpdefs.h" #include "prototyp.h" /* routines in this module */ static int menu_checkkey(int curkey,int choice); /* uncomment following for book version */ /* #define WAITE */ int release=1820; /* this has 2 implied decimals; increment it every synch */ int patchlevel=0; /* patchlevel for DOS version */ int xrelease=202; /* fullscreen_choice options */ #define CHOICERETURNKEY 1 #define CHOICEMENU 2 #define CHOICEHELP 4 extern char diskfilename[]; extern int using_jiim; extern int xdots, ydots, sxdots, sydots, sxoffs, syoffs, vxdots; extern int colors; extern int dotmode; extern int oktoprint; extern int textrow, textcol, textrbase, textcbase; extern int debugflag; extern int fractype; extern int calc_status; extern double param[]; extern int tabmode; extern int color_dark,color_medium,color_bright; extern int lookatmouse; extern int gotrealdac; extern int reallyega; extern SEGTYPE extraseg; extern int active_system; extern int first_init; extern int initbatch; /* 1 if batch run (no kbd) */ /* int stopmsg(flags,message) displays message and waits for a key: message should be a max of 9 lines with \n's separating them; no leading or trailing \n's in message; no line longer than 76 chars for best appearance; flag options: &1 if already in text display mode, stackscreen is not called and message is displayed at (12,0) instead of (4,0) &2 if continue/cancel indication is to be returned; when not set, "Any key to continue..." is displayed when set, "Escape to cancel, any other key to continue..." -1 is returned for cancel, 0 for continue &4 set to suppress buzzer &8 for Fractint for Windows & parser - use a fixed pitch font &16 for info only message (green box instead of red in DOS vsn) */ int stopmsg (int flags, CHAR far *msg) { int ret,toprow,color,savelookatmouse; if (active_system == 0 /* DOS */ && first_init) { /* & cmdfiles hasn't finished 1st try */ setvideotext(); buzzer(2); putstring(0,0,15,"*** Error during startup:"); putstring(2,0,15,msg); movecursor(8,0); #ifdef XFRACT sleep(1); UnixDone(); #endif exit(1); } if (initbatch == 1) { /* in batch mode */ initbatch = 4; /* used to set errorlevel */ return (-1); } ret = 0; savelookatmouse = lookatmouse; lookatmouse = -13; if ((flags & 1)) blankrows(toprow=12,10,7); else { stackscreen(); toprow = 4; movecursor(4,0); } textcbase = 2; /* left margin is 2 */ putstring(toprow,0,7,msg); if (flags & 2) putstring(textrow+2,0,7,"Escape to cancel, any other key to continue..."); else putstring(textrow+2,0,7,"Any key to continue..."); textcbase = 0; /* back to full line */ color = (flags & 16) ? C_STOP_INFO : C_STOP_ERR; setattr(toprow,0,color,(textrow+1-toprow)*80); movecursor(25,80); /* cursor off */ if ((flags & 4) == 0) buzzer((flags & 16) ? 0 : 2); while (keypressed()) /* flush any keyahead */ getakey(); if (getakeynohelp() == ESC) ret = -1; if ((flags & 1)) blankrows(toprow,10,7); else unstackscreen(); lookatmouse = savelookatmouse; return ret; } static char far *temptextsave = NULL; static int textxdots,textydots; /* texttempmsg(msg) displays a text message of up to 40 characters, waits for a key press, restores the prior display, and returns (without eating the key). It works in almost any video mode - does nothing in some very odd cases (HCGA hi-res with old bios), or when there isn't 10k of temp mem free. */ int texttempmsg(char *msgparm) { if (showtempmsg(msgparm)) return(-1); #ifndef XFRACT while (!keypressed()) {} /* wait for a keystroke but don't eat it */ #else waitkeypressed(0); /* wait for a keystroke but don't eat it */ #endif cleartempmsg(); return(0); } void freetempmsg() { if(temptextsave != NULL) farmemfree(temptextsave); temptextsave = NULL; } int showtempmsg(char *msgparm) { static long size = 0; extern int color_dark,color_medium; CHAR msg[41]; BYTE buffer[640]; char far *fartmp; BYTE far *fontptr; BYTE *bufptr; int i,j,k,xrepeat,yrepeat,fontchar,charnum; int save_sxoffs,save_syoffs; strncpy(msg,msgparm,40); msg[40] = 0; /* ensure max message len of 40 chars */ if (dotmode == 11) { /* disk video, screen in text mode, easy */ dvid_status(0,msg); return(0); } if ((fontptr = findfont(0)) == NULL) { /* old bios, no font table? */ if (oktoprint == 0 /* can't printf */ || sxdots > 640 || sydots > 200) /* not willing to trust char cell size */ return(-1); /* sorry, message not displayed */ textydots = 8; textxdots = sxdots; } else { xrepeat = (sxdots >= 640) ? 2 : 1; yrepeat = (sydots >= 300) ? 2 : 1; textxdots = strlen(msg) * xrepeat * 8; textydots = yrepeat * 8; } /* worst case needs 10k */ if(temptextsave !=NULL) if(size != (long)textxdots * (long)textydots) freetempmsg(); size = (long)textxdots * (long)textydots; save_sxoffs = sxoffs; save_syoffs = syoffs; sxoffs = syoffs = 0; if(temptextsave == NULL) /* only save screen first time called */ { if ((temptextsave = farmemalloc(size)) == NULL) return(-1); /* sorry, message not displayed */ fartmp = temptextsave; for (i = 0; i < textydots; ++i) { get_line(i,0,textxdots-1,buffer); for (j = 0; j < textxdots; ++j) /* copy it out to far memory */ *(fartmp++) = buffer[j]; } } if (fontptr == NULL) { /* bios must do it for us */ home(); printf(msg); } else { /* generate the characters */ find_special_colors(); /* get color_dark & color_medium set */ for (i = 0; i < 8; ++i) { memset(buffer,color_dark,640); bufptr = buffer; charnum = -1; while (msg[++charnum] != 0) { fontchar = *(fontptr + msg[charnum]*8 + i); for (j = 0; j < 8; ++j) { for (k = 0; k < xrepeat; ++k) { if ((fontchar & 0x80) != 0) *bufptr = color_medium; ++bufptr; } fontchar <<= 1; } } for (j = 0; j < yrepeat; ++j) put_line(i*yrepeat+j,0,textxdots-1,buffer); } } sxoffs = save_sxoffs; syoffs = save_syoffs; return(0); } void cleartempmsg() { BYTE buffer[640]; char far *fartmp; int i,j; int save_sxoffs,save_syoffs; if (dotmode == 11) /* disk video, easy */ dvid_status(0,""); else if (temptextsave != NULL) { save_sxoffs = sxoffs; save_syoffs = syoffs; sxoffs = syoffs = 0; fartmp = temptextsave; for (i = 0; i < textydots; ++i) { for (j = 0; j < textxdots; ++j) /* copy back from far memory */ buffer[j] = *(fartmp++); put_line(i,0,textxdots-1,buffer); } if(using_jiim == 0) /* jiim frees memory with freetempmsg() */ { farmemfree(temptextsave); temptextsave = NULL; } sxoffs = save_sxoffs; syoffs = save_syoffs; } } void blankrows(int row,int rows,int attr) { char buf[81]; memset(buf,' ',80); buf[80] = 0; while (--rows >= 0) putstring(row++,0,attr,buf); } void helptitle() { char msg[80],buf[80]; setclear(); /* clear the screen */ #ifdef XFRACT sprintf(msg,"XFRACTINT Version %d.%02d (FRACTINT Version %d.%02d)", xrelease/100,xrelease%100, release/100,release%100); putstringcenter(0,0,80,C_TITLE,msg); #else #ifdef WAITE release=1821; patchlevel = 0; sprintf(msg,"Special FRACTINT Version %d.%01d",release/100,(release%100)/10); #else sprintf(msg,"FRACTINT Version %d.%01d",release/100,(release%100)/10); #endif if (release%10) { sprintf(buf,"%01d",release%10); strcat(msg,buf); } #ifndef XFRACT if (patchlevel) { sprintf(buf," Patch %d",patchlevel); strcat(msg,buf); } #endif #ifdef WAITE /* realdos.c */ strcat(msg," for the Waite Group's Fractal Creations 2nd Ed."); #endif /* WAITE - realdos.c */ putstringcenter(0,0,80,C_TITLE,msg); #ifdef WAITE return; #endif #endif /* uncomment next for production executable: */ /* return; */ /*NOTREACHED*/ if (debugflag == 3002) return; /* putstring(0,2,C_TITLE_DEV,"Development Version"); */ /* replace above by next after creating production release, for release source */ putstring(0,3,C_TITLE_DEV, "Customized Version"); putstring(0,55,C_TITLE_DEV,"Not for Public Release"); } int putstringcenter(int row, int col, int width, int attr, char far *msg) { char buf[81]; int i,j,k; i = 0; #ifdef XFRACT if (width==80) width=79; /* Some systems choke in column 80 */ #endif while (msg[i]) ++i; /* strlen for a far */ if (i == 0) return(-1); j = (width - i) / 2; j -= (width + 10 - i) / 20; /* when wide a bit left of center looks better */ memset(buf,' ',width); buf[width] = 0; i = 0; k = j; while (msg[i]) buf[k++] = msg[i++]; /* strcpy for a far */ putstring(row,col,attr,buf); return j; } #ifndef XFRACT static int screenctr=-1; #else static int screenctr=0; #endif #define MAXSCREENS 3 static BYTE far *savescreen[MAXSCREENS]; static int saverc[MAXSCREENS+1]; static FILE *savescf=NULL; static char scsvfile[]="fractscr.tmp"; extern int text_type; extern int textaddr; void stackscreen() { #ifndef XFRACT BYTE far *vidmem; int savebytes; int i; BYTE far *ptr; char buf[100]; saverc[screenctr+1] = textrow*80 + textcol; if (++screenctr) { /* already have some stacked */ static char far msg[]={"stackscreen overflow"}; if ((i = screenctr - 1) >= MAXSCREENS) { /* bug, missing unstack? */ stopmsg(1,msg); exit(1); } vidmem = MK_FP(textaddr,0); savebytes = (text_type == 0) ? 4000 : 16384; if ((ptr = savescreen[i] = farmemalloc((long)savebytes))) far_memcpy(ptr,vidmem,savebytes); else { if (savescf == NULL) { /* create file just once */ if ((savescf = fopen(scsvfile,"wb")) == NULL) goto fileproblem; if (fwrite(buf,MAXSCREENS,16384,savescf) != 16384) goto fileproblem; fclose(savescf); if ((savescf = fopen(scsvfile,"r+b")) == NULL) { static char far msg[]={"insufficient memory, aborting"}; fileproblem: stopmsg(1,msg); exit(1); } } fseek(savescf,(long)(savebytes*i),SEEK_SET); while (--savebytes >= 0) putc(*(vidmem++),savescf); } setclear(); } else setfortext(); #else int i; BYTE far *ptr; saverc[screenctr+1] = textrow*80 + textcol; if (++screenctr) { /* already have some stacked */ static char far msg[]={"stackscreen overflow"}; if ((i = screenctr - 1) >= MAXSCREENS) { /* bug, missing unstack? */ stopmsg(1,msg); exit(1); } if (ptr = savescreen[i] = farmemalloc(sizeof(int *))) savecurses(ptr); else { stopmsg(1,msg); exit(1); } setclear(); } else setfortext(); #endif } void unstackscreen() { #ifndef XFRACT char far *vidmem; int savebytes; BYTE far *ptr; textrow = saverc[screenctr] / 80; textcol = saverc[screenctr] % 80; if (--screenctr >= 0) { /* unstack */ vidmem = MK_FP(textaddr,0); savebytes = (text_type == 0) ? 4000 : 16384; if ((ptr = savescreen[screenctr])) { far_memcpy(vidmem,ptr,savebytes); farmemfree(ptr); } else { fseek(savescf,(long)(savebytes*screenctr),SEEK_SET); while (--savebytes >= 0) *(vidmem++) = getc(savescf); } } else setforgraphics(); movecursor(-1,-1); #else BYTE far *ptr; textrow = saverc[screenctr] / 80; textcol = saverc[screenctr] % 80; if (--screenctr >= 0) { /* unstack */ ptr = savescreen[screenctr]; restorecurses(ptr); farmemfree(ptr); } else setforgraphics(); movecursor(-1,-1); #endif } void discardscreen() { if (--screenctr >= 0) { /* unstack */ if (savescreen[screenctr]) farmemfree(savescreen[screenctr]); } else discardgraphics(); } /* --------------------------------------------------------------------- */ char speed_prompt[]="Speed key string"; int fullscreen_choice( int options, /* &2 use menu coloring scheme */ /* &4 include F1 for help in instructions */ /* &8 add caller's instr after normal set */ char far *hdg, /* heading info, \n delimited */ char far *hdg2, /* column heading or NULL */ char far *instr, /* instructions, \n delimited, or NULL */ int numchoices, /* How many choices in list */ char **choices, /* array of choice strings */ int *attributes, /* &3: 0 normal color, 1,3 highlight */ /* &256 marks a dummy entry */ int boxwidth, /* box width, 0 for calc (in items) */ int boxdepth, /* box depth, 0 for calc, 99 for max */ int colwidth, /* data width of a column, 0 for calc */ int current, /* start with this item */ void (*formatitem)(),/* routine to display an item or NULL */ char *speedstring, /* returned speed key value, or NULL >[30]*/ int (*speedprompt)(),/* routine to display prompt or NULL */ int (*checkkey)() /* routine to check keystroke or NULL */ ) /* return is: n>=0 for choice n selected, -1 for escape k for checkkey routine return value k (if not 0 nor -1) speedstring[0] != 0 on return if string is present */ { static char far choiceinstr1a[]="Use the cursor keys to highlight your selection"; static char far choiceinstr1b[]="Use the cursor keys or type a value to make a selection"; static char far choiceinstr2a[]="Press ENTER for highlighted choice, or ESCAPE to back out"; static char far choiceinstr2b[]="Press ENTER for highlighted choice, ESCAPE to back out, or F1 for help"; static char far choiceinstr2c[]="Press ENTER for highlighted choice, or F1 for help"; int titlelines,titlewidth; int reqdrows; int topleftrow,topleftcol; int topleftchoice; int speedrow; /* speed key prompt */ int boxitems; /* boxwidth*boxdepth */ int curkey,increment,rev_increment; int redisplay; int i,j,k; char far *charptr; char buf[81]; int speed_match = 0; char curitem[81]; char *itemptr; int ret,savelookatmouse; savelookatmouse = lookatmouse; lookatmouse = 0; ret = -1; if (speedstring && (i = strlen(speedstring)) > 0) { /* preset current to passed string */ current = 0; while (current < numchoices && (k = strncasecmp(speedstring,choices[current],i)) > 0) ++current; if (k < 0 && current > 0) /* oops - overshot */ --current; if (current >= numchoices) /* bumped end of list */ current = numchoices - 1; } while (1) { if (current >= numchoices) /* no real choice in the list? */ goto fs_choice_end; if ((attributes[current] & 256) == 0) break; ++current; /* scan for a real choice */ } titlelines = titlewidth = 0; if (hdg) { charptr = hdg; /* count title lines, find widest */ i = 0; titlelines = 1; while (*charptr) { if (*(charptr++) == '\n') { ++titlelines; i = -1; } if (++i > titlewidth) titlewidth = i; } } if (colwidth == 0) /* find widest column */ for (i = 0; i < numchoices; ++i) if (strlen(choices[i]) > colwidth) colwidth = strlen(choices[i]); /* title(1), blank(1), hdg(n), blank(1), body(n), blank(1), instr(?) */ reqdrows = 3; /* calc rows available */ if (hdg) reqdrows += titlelines + 1; if (instr) { /* count instructions lines */ charptr = instr; ++reqdrows; while (*charptr) if (*(charptr++) == '\n') ++reqdrows; if ((options & 8)) /* show std instr too */ reqdrows += 2; } else reqdrows += 2; /* standard instructions */ if (speedstring) ++reqdrows; /* a row for speedkey prompt */ if (boxdepth > (i = 25 - reqdrows)) /* limit the depth to max */ boxdepth = i; if (boxwidth == 0) { /* pick box width and depth */ if (numchoices <= i - 2) { /* single column is 1st choice if we can */ boxdepth = numchoices; boxwidth = 1; } else { /* sort-of-wide is 2nd choice */ boxwidth = 60 / (colwidth + 1); if (boxwidth == 0 || (boxdepth = (numchoices+boxwidth-1)/boxwidth) > i - 2) { boxwidth = 80 / (colwidth + 1); /* last gasp, full width */ if ((boxdepth = (numchoices+boxwidth-1)/boxwidth) > i) boxdepth = i; } } } if ((i = 77 / boxwidth - colwidth) > 3) /* spaces to add @ left each choice */ i = 3; j = boxwidth * (colwidth += i) + i; /* overall width of box */ if (j < titlewidth+2) j = titlewidth + 2; if (j > 80) j = 80; if (j <= 70 && boxwidth == 2) { /* special case makes menus nicer */ ++j; ++colwidth; } k = (80 - j) / 2; /* center the box */ k -= (90 - j) / 20; topleftcol = k + i; /* column of topleft choice */ i = (25 - reqdrows - boxdepth) / 2; i -= i / 4; /* higher is better if lots extra */ topleftrow = 3 + titlelines + i; /* row of topleft choice */ /* now set up the overall display */ helptitle(); /* clear, display title line */ setattr(1,0,C_PROMPT_BKGRD,24*80); /* init rest to background */ for (i = topleftrow-1-titlelines; i < topleftrow+boxdepth+1; ++i) setattr(i,k,C_PROMPT_LO,j); /* draw empty box */ if (hdg) { textcbase = (80 - titlewidth) / 2; /* set left margin for putstring */ textcbase -= (90 - titlewidth) / 20; /* put heading into box */ putstring(topleftrow-titlelines-1,0,C_PROMPT_HI,hdg); textcbase = 0; } if (hdg2) /* display 2nd heading */ putstring(topleftrow-1,topleftcol,C_PROMPT_MED,hdg2); i = topleftrow + boxdepth + 1; if (instr == NULL || (options & 8)) { /* display default instructions */ if (i < 20) ++i; if (speedstring) { speedrow = i; *speedstring = 0; if (++i < 22) ++i; } putstringcenter(i++,0,80,C_PROMPT_BKGRD, (speedstring) ? choiceinstr1b : choiceinstr1a); putstringcenter(i++,0,80,C_PROMPT_BKGRD, (options&CHOICEMENU) ? choiceinstr2c : ((options&CHOICEHELP) ? choiceinstr2b : choiceinstr2a)); } if (instr) { /* display caller's instructions */ charptr = instr; j = -1; while ((buf[++j] = *(charptr++))) if (buf[j] == '\n') { buf[j] = 0; putstringcenter(i++,0,80,C_PROMPT_BKGRD,buf); j = -1; } putstringcenter(i,0,80,C_PROMPT_BKGRD,buf); } boxitems = boxwidth * boxdepth; topleftchoice = 0; /* pick topleft for init display */ while (current - topleftchoice >= boxitems || (current - topleftchoice > boxitems/2 && topleftchoice + boxitems < numchoices)) topleftchoice += boxwidth; redisplay = 1; while (1) { /* main loop */ if (redisplay) { /* display the current choices */ if ((options & CHOICEMENU) == 0) { memset(buf,' ',80); buf[boxwidth*colwidth] = 0; for (i = (hdg2) ? 0 : -1; i <= boxdepth; ++i) /* blank the box */ putstring(topleftrow+i,topleftcol,C_PROMPT_LO,buf); } for (i = 0; i+topleftchoice < numchoices && i < boxitems; ++i) { /* display the choices */ if ((k = attributes[j = i+topleftchoice] & 3) == 1) k = C_PROMPT_LO; else if (k == 3) k = C_PROMPT_HI; else k = C_PROMPT_MED; if (formatitem) (*formatitem)(j,charptr=buf); else charptr = choices[j]; putstring(topleftrow+i/boxwidth,topleftcol+(i%boxwidth)*colwidth, k,charptr); } /*** ... format differs for summary/detail, whups, force box width to ... be 72 when detail toggle available? (2 grey margin each ... side, 1 blue margin each side) ***/ if (topleftchoice > 0 && hdg2 == NULL) putstring(topleftrow-1,topleftcol,C_PROMPT_LO,"(more)"); if (topleftchoice + boxitems < numchoices) putstring(topleftrow+boxdepth,topleftcol,C_PROMPT_LO,"(more)"); redisplay = 0; } i = current - topleftchoice; /* highlight the current choice */ if (formatitem) (*formatitem)(current,itemptr=curitem); else itemptr = choices[current]; putstring(topleftrow+i/boxwidth,topleftcol+(i%boxwidth)*colwidth, C_CHOICE_CURRENT,itemptr); if (speedstring) { /* show speedstring if any */ memset(buf,' ',80); buf[80] = 0; putstring(speedrow,0,C_PROMPT_BKGRD,buf); if (*speedstring) { /* got a speedstring on the go */ putstring(speedrow,15,C_CHOICE_SP_INSTR," "); if (speedprompt) j = speedprompt(speedrow,16,C_CHOICE_SP_INSTR,speedstring,speed_match); else { putstring(speedrow,16,C_CHOICE_SP_INSTR,speed_prompt); j = strlen(speed_prompt); } strcpy(buf,speedstring); i = strlen(buf); while (i < 30) buf[i++] = ' '; buf[i] = 0; putstring(speedrow,16+j,C_CHOICE_SP_INSTR," "); putstring(speedrow,17+j,C_CHOICE_SP_KEYIN,buf); movecursor(speedrow,17+j+strlen(speedstring)); } else movecursor(25,80); } else movecursor(25,80); #ifndef XFRACT while (!keypressed()) { } /* enables help */ #else waitkeypressed(0); /* enables help */ #endif curkey = getakey(); #ifdef XFRACT if (curkey==F10) curkey=')'; if (curkey==F9) curkey='('; if (curkey==F8) curkey='*'; #endif i = current - topleftchoice; /* unhighlight current choice */ if ((k = attributes[current] & 3) == 1) k = C_PROMPT_LO; else if (k == 3) k = C_PROMPT_HI; else k = C_PROMPT_MED; putstring(topleftrow+i/boxwidth,topleftcol+(i%boxwidth)*colwidth, k,itemptr); increment = 0; switch (curkey) { /* deal with input key */ case ENTER: case ENTER_2: ret = current; goto fs_choice_end; case ESC: goto fs_choice_end; case DOWN_ARROW: case DOWN_ARROW_2: rev_increment = 0 - (increment = boxwidth); break; case UP_ARROW: case UP_ARROW_2: increment = 0 - (rev_increment = boxwidth); break; case RIGHT_ARROW: case RIGHT_ARROW_2: if (boxwidth == 1) break; increment = 1; rev_increment = -1; break; case LEFT_ARROW: case LEFT_ARROW_2: if (boxwidth == 1) break; increment = -1; rev_increment = 1; break; case PAGE_UP: if (numchoices > boxitems) { topleftchoice -= boxitems; increment = -boxitems; rev_increment = boxwidth; redisplay = 1; } break; case PAGE_DOWN: if (numchoices > boxitems) { topleftchoice += boxitems; increment = boxitems; rev_increment = -boxwidth; redisplay = 1; } break; case CTL_HOME: case HOME: current = -1; increment = rev_increment = 1; break; case CTL_END: case END: current = numchoices; increment = rev_increment = -1; break; default: if (checkkey) { if ((ret = (*checkkey)(curkey,current)) < -1 || ret > 0) goto fs_choice_end; if (ret == -1) redisplay = -1; } ret = -1; if (speedstring) { i = strlen(speedstring); if (curkey == 8 && i > 0) /* backspace */ speedstring[--i] = 0; if (33 <= curkey && curkey <= 126 && i < 30) { curkey = tolower(curkey); speedstring[i] = curkey; speedstring[++i] = 0; } if (i > 0) { /* locate matching type */ current = 0; while (current < numchoices && (speed_match = strncasecmp(speedstring,choices[current],i)) > 0) ++current; if (speed_match < 0 && current > 0) /* oops - overshot */ --current; if (current >= numchoices) /* bumped end of list */ current = numchoices - 1; } } break; } if (increment) { /* apply cursor movement */ current += increment; if (speedstring) /* zap speedstring */ speedstring[0] = 0; } while (1) { /* adjust to a non-comment choice */ if (current < 0 || current >= numchoices) increment = rev_increment; else if ((attributes[current] & 256) == 0) break; current += increment; } if (topleftchoice > numchoices - boxitems) topleftchoice = ((numchoices+boxwidth-1)/boxwidth)*boxwidth - boxitems; if (topleftchoice < 0) topleftchoice = 0; while (current < topleftchoice) { topleftchoice -= boxwidth; redisplay = 1; } while (current >= topleftchoice + boxitems) { topleftchoice += boxwidth; redisplay = 1; } } fs_choice_end: lookatmouse = savelookatmouse; return(ret); } #ifndef XFRACT /* case independent version of strncmp */ int strncasecmp(char *s,char *t,int ct) { for(; (tolower(*s) == tolower(*t)) && --ct ; s++,t++) if(*s == '\0') return(0); return(tolower(*s) - tolower(*t)); } #endif static int menutype; #define MENU_HDG 3 #define MENU_ITEM 1 int main_menu(int fullmenu) { char *choices[44]; /* 2 columns * 22 rows */ int attributes[44]; int choicekey[44]; int i; int nextleft,nextright; int oldtabmode,oldhelpmode; oldtabmode = tabmode; oldhelpmode = helpmode; top: menutype = fullmenu; tabmode = 0; for (i = 0; i < 44; ++i) { attributes[i] = 256; choices[i] = ""; choicekey[i] = -1; } nextleft = -2; nextright = -1; if (fullmenu) { choices[nextleft+=2] = " CURRENT IMAGE"; attributes[nextleft] = 256+MENU_HDG; choicekey[nextleft+=2] = 13; /* enter */ attributes[nextleft] = MENU_ITEM; if (calc_status == 2) choices[nextleft] = "continue calculation"; else choices[nextleft] = "return to image"; choicekey[nextleft+=2] = 9; /* tab */ attributes[nextleft] = MENU_ITEM; choices[nextleft] = "info about image "; choicekey[nextleft+=2] = -10; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "zoom box functions..."; choicekey[nextleft+=2] = 'o'; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "orbits window "; if(!(fractype==JULIA || fractype==JULIAFP || fractype==INVERSEJULIA)) nextleft+=2; } choices[nextleft+=2] = " NEW IMAGE"; attributes[nextleft] = 256+MENU_HDG; choicekey[nextleft+=2] = DELETE; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "select video mode... "; choicekey[nextleft+=2] = 't'; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "select fractal type "; if (fullmenu) { if ((curfractalspecific->tojulia != NOFRACTAL && param[0] == 0.0 && param[1] == 0.0) || curfractalspecific->tomandel != NOFRACTAL) { choicekey[nextleft+=2] = ' '; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "toggle to/from julia "; } if(fractype==JULIA || fractype==JULIAFP || fractype==INVERSEJULIA) { choicekey[nextleft+=2] = 'j'; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "toggle to/from inverse "; } choicekey[nextleft+=2] = '\\'; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "return to prior image <\\>"; } nextleft += 2; choices[nextleft+=2] = " OPTIONS"; attributes[nextleft] = 256+MENU_HDG; choicekey[nextleft+=2] = 'x'; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "basic options... "; choicekey[nextleft+=2] = 'y'; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "extended options... "; choicekey[nextleft+=2] = 'z'; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "type-specific parms... "; choicekey[nextleft+=2] = 'v'; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "view window options... "; choicekey[nextleft+=2] = 'i'; attributes[nextleft] = MENU_ITEM; choices[nextleft] = "fractal 3D parms... "; choices[nextright+=2] = " FILE"; attributes[nextright] = 256+MENU_HDG; choicekey[nextright+=2] = '@'; attributes[nextright] = MENU_ITEM; choices[nextright] = "run saved command set... <@>"; if (fullmenu) { choicekey[nextright+=2] = 's'; attributes[nextright] = MENU_ITEM; choices[nextright] = "save image to file "; } choicekey[nextright+=2] = 'r'; attributes[nextright] = MENU_ITEM; choices[nextright] = "load image from file... "; choicekey[nextright+=2] = '3'; attributes[nextright] = MENU_ITEM; choices[nextright] = "3d transform from file...<3>"; if (fullmenu) { choicekey[nextright+=2] = '#'; attributes[nextright] = MENU_ITEM; choices[nextright] = "3d overlay from file.....<#>"; choicekey[nextright+=2] = 'b'; attributes[nextright] = MENU_ITEM; choices[nextright] = "save current parameters.."; choicekey[nextright+=2] = 'p'; attributes[nextright] = MENU_ITEM; choices[nextright] = "print image

"; } choicekey[nextright+=2] = 'd'; attributes[nextright] = MENU_ITEM; choices[nextright] = "shell to dos "; choicekey[nextright+=2] = 'g'; attributes[nextright] = MENU_ITEM; choices[nextright] = "give command string "; choicekey[nextright+=2] = ESC; attributes[nextright] = MENU_ITEM; choices[nextright] = "quit Fractint "; choicekey[nextright+=2] = INSERT; attributes[nextright] = MENU_ITEM; choices[nextright] = "restart Fractint "; if (fullmenu && gotrealdac && colors >= 16) { nextright += 2; choices[nextright+=2] = " COLORS"; attributes[nextright] = 256+MENU_HDG; /*** choicekey[nextright+=2] = -12; attributes[nextright] = MENU_ITEM; choices[nextright] = "color cycling menu..."; choicekey[nextright+=2] = -13; attributes[nextright] = MENU_ITEM; choices[nextright] = "palette editing menu..."; ***/ choicekey[nextright+=2] = 'c'; attributes[nextright] = MENU_ITEM; choices[nextright] = "color cycling mode "; choicekey[nextright+=2] = '+'; attributes[nextright] = MENU_ITEM; choices[nextright] = "rotate palette <+>, <->"; if (colors > 16) { if (!reallyega) { choicekey[nextright+=2] = 'e'; attributes[nextright] = MENU_ITEM; choices[nextright] = "palette editing mode "; } choicekey[nextright+=2] = 'a'; attributes[nextright] = MENU_ITEM; choices[nextright] = "make starfield "; } } i = (keypressed()) ? getakey() : 0; if (menu_checkkey(i,0) == 0) { helpmode = HELPMAIN; /* switch help modes */ if ((nextleft += 2) < nextright) nextleft = nextright + 1; i = fullscreen_choice(CHOICEMENU, "MAIN MENU", NULL,NULL,nextleft,choices,attributes, 2,nextleft/2,29,0,NULL,NULL,NULL,menu_checkkey); if (i == -1) /* escape */ i = ESC; else if (i < 0) i = 0 - i; else { /* user selected a choice */ i = choicekey[i]; switch (i) { /* check for special cases */ case -10: /* zoombox functions */ helpmode = HELPZOOM; help(0); i = 0; break; } } } if (i == ESC) { /* escape from menu exits Fractint */ static char far s[] = "Exit from Fractint (y/n)? y"; helptitle(); setattr(1,0,C_GENERAL_MED,24*80); for (i = 9; i <= 11; ++i) setattr(i,18,C_GENERAL_INPUT,40); putstringcenter(10,18,40,C_GENERAL_INPUT,s); movecursor(25,80); while ((i = getakey()) != 'y' && i != 'Y' && i != 13) { if (i == 'n' || i == 'N') goto top; } goodbye(); } if (i == TAB) { tab_display(); i = 0; } if (i == ENTER || i == ENTER_2) i = 0; /* don't trigger new calc */ tabmode = oldtabmode; return(i); } static int menu_checkkey(int curkey,int choice) { int testkey; testkey = (curkey>='A' && curkey<='Z') ? curkey+('a'-'A') : curkey; #ifdef XFRACT /* We use F2 for shift-@, annoyingly enough */ if (testkey == F2) return(0-testkey); #endif if (strchr("@txyzgvir3dj",testkey) || testkey == INSERT || testkey == ESC || testkey == DELETE) return(0-testkey); if (menutype) { if (strchr("\\sobp",testkey) || testkey == 9) return(0-testkey); if (testkey == ' ') if ((curfractalspecific->tojulia != NOFRACTAL && param[0] == 0.0 && param[1] == 0.0) || curfractalspecific->tomandel != NOFRACTAL) return(0-testkey); if (gotrealdac && colors >= 16) { if (strchr("c+-",testkey)) return(0-testkey); if (colors > 16 && (testkey == 'a' || (!reallyega && testkey == 'e'))) return(0-testkey); } } if (check_vidmode_key(0,testkey) >= 0) return(0-testkey); return(0); } int input_field( int options, /* &1 numeric, &2 integer, &4 double */ int attr, /* display attribute */ char *fld, /* the field itself */ int len, /* field length (declare as 1 larger for \0) */ int row, /* display row */ int col, /* display column */ int (*checkkey)(int) /* routine to check non data keys, or NULL */ ) { char savefld[81]; char buf[81]; int insert, started, offset, curkey, display; int i, j; int ret,savelookatmouse; savelookatmouse = lookatmouse; lookatmouse = 0; ret = -1; strcpy(savefld,fld); insert = started = offset = 0; display = 1; while (1) { strcpy(buf,fld); i = strlen(buf); while (i < len) buf[i++] = ' '; buf[len] = 0; if (display) { /* display current value */ putstring(row,col,attr,buf); display = 0; } curkey = keycursor(row+insert,col+offset); /* get a keystroke */ switch (curkey) { case ENTER: case ENTER_2: ret = 0; goto inpfld_end; case ESC: goto inpfld_end; case RIGHT_ARROW: case RIGHT_ARROW_2: if (offset < len-1) ++offset; started = 1; break; case LEFT_ARROW: case LEFT_ARROW_2: if (offset > 0) --offset; started = 1; break; case HOME: offset = 0; started = 1; break; case END: offset = strlen(fld); started = 1; break; case 8: case 127: /* backspace */ if (offset > 0) { j = strlen(fld); for (i = offset-1; i < j; ++i) fld[i] = fld[i+1]; --offset; } started = display = 1; break; case DELETE: /* delete */ j = strlen(fld); for (i = offset; i < j; ++i) fld[i] = fld[i+1]; started = display = 1; break; case INSERT: /* insert */ insert ^= 0x8000; started = 1; break; case F5: strcpy(fld,savefld); insert = started = offset = 0; display = 1; break; default: if (nonalpha(curkey)) { if (checkkey && (ret = (*checkkey)(curkey))) goto inpfld_end; break; /* non alphanum char */ } if (offset >= len) break; /* at end of field */ if (insert && started && strlen(fld) >= len) break; /* insert & full */ if ((options & 1) && (curkey < '0' || curkey > '9') && curkey != '+' && curkey != '-') { if ((options & 2)) break; /* allow scientific notation, and specials "e" and "p" */ if ( ((curkey != 'e' && curkey != 'E') || offset >= 18) && ((curkey != 'p' && curkey != 'P') || offset != 0 ) && curkey != '.') break; } if (started == 0) /* first char is data, zap field */ fld[0] = 0; if (insert) { j = strlen(fld); while (j >= offset) { fld[j+1] = fld[j]; --j; } } if (offset >= strlen(fld)) fld[offset+1] = 0; fld[offset++] = curkey; /* if "e" or "p" in first col make number e or pi */ if ((options & 3) == 1) { /* floating point */ double tmpd; int specialv; char tmpfld[30]; specialv = 0; if (*fld == 'e' || *fld == 'E') { tmpd = exp(1.0); specialv = 1; } if (*fld == 'p' || *fld == 'P') { tmpd = atan(1.0) * 4; specialv = 1; } if (specialv) { if ((options & 4) == 0) roundfloatd(&tmpd); sprintf(tmpfld,"%.15g",tmpd); tmpfld[len-1] = 0; /* safety, field should be long enough */ strcpy(fld,tmpfld); offset = 0; } } started = display = 1; } } inpfld_end: lookatmouse = savelookatmouse; return(ret); } int field_prompt( int options, /* &1 numeric value, &2 integer */ char *hdg, /* heading, \n delimited lines */ char *instr, /* additional instructions or NULL */ char *fld, /* the field itself */ int len, /* field length (declare as 1 larger for \0) */ int (*checkkey)(int) /* routine to check non data keys, or NULL */ ) { char *charptr; int boxwidth,titlelines,titlecol,titlerow; int promptcol; int i,j; char buf[81]; helptitle(); /* clear screen, display title */ setattr(1,0,C_PROMPT_BKGRD,24*80); /* init rest to background */ charptr = hdg; /* count title lines, find widest */ i = boxwidth = 0; titlelines = 1; while (*charptr) { if (*(charptr++) == '\n') { ++titlelines; i = -1; } if (++i > boxwidth) boxwidth = i; } if (len > boxwidth) boxwidth = len; i = titlelines + 4; /* total rows in box */ titlerow = (25 - i) / 2; /* top row of it all when centered */ titlerow -= titlerow / 4; /* higher is better if lots extra */ titlecol = (80 - boxwidth) / 2; /* center the box */ titlecol -= (90 - boxwidth) / 20; promptcol = titlecol - (boxwidth-len)/2; j = titlecol; /* add margin at each side of box */ if ((i = (82-boxwidth)/4) > 3) i = 3; j -= i; boxwidth += i * 2; for (i = -1; i < titlelines+3; ++i) /* draw empty box */ setattr(titlerow+i,j,C_PROMPT_LO,boxwidth); textcbase = titlecol; /* set left margin for putstring */ putstring(titlerow,0,C_PROMPT_HI,hdg); /* display heading */ textcbase = 0; i = titlerow + titlelines + 4; if (instr) { /* display caller's instructions */ charptr = instr; j = -1; while ((buf[++j] = *(charptr++))) if (buf[j] == '\n') { buf[j] = 0; putstringcenter(i++,0,80,C_PROMPT_BKGRD,buf); j = -1; } putstringcenter(i,0,80,C_PROMPT_BKGRD,buf); } else /* default instructions */ putstringcenter(i,0,80,C_PROMPT_BKGRD, "Press ENTER when finished (or ESCAPE to back out)"); return(input_field(options,C_PROMPT_INPUT,fld,len, titlerow+titlelines+1,promptcol,checkkey)); } /* thinking(1,message): if thinking message not yet on display, it is displayed; otherwise the wheel is updated returns 0 to keep going, -1 if keystroke pending thinking(0,NULL): call this when thinking phase is done */ int thinking(int options,char *msg) { static int thinkstate = -1; static char *wheel[] = {"-","\\","|","/"}; static int thinkcol; static int count=0; char buf[81]; if (options == 0) { if (thinkstate >= 0) { thinkstate = -1; unstackscreen(); } return(0); } if (thinkstate < 0) { stackscreen(); thinkstate = 0; helptitle(); strcpy(buf," "); strcat(buf,msg); strcat(buf," "); putstring(4,10,C_GENERAL_HI,buf); thinkcol = textcol - 3; count = 0; } if ((count++)<100) { return 0; } count = 0; putstring(4,thinkcol,C_GENERAL_HI,wheel[thinkstate]); movecursor(25,80); /* turn off cursor */ thinkstate = (thinkstate + 1) & 3; return (keypressed()); } void clear_screen(void) /* a stub for a windows only subroutine */ { } /* savegraphics/restoregraphics: video.asm subroutines */ static BYTE far *swapsavebuf; static unsigned int memhandle; unsigned long swaptotlen; unsigned long swapoffset; BYTE far *swapvidbuf; int swaplength; static int swaptype = -1; static int swapblklen; /* must be a power of 2 */ #ifndef XFRACT extern BYTE suffix[4096]; #else BYTE suffix[4096]; #endif #ifndef XFRACT int savegraphics() { extern int made_dsktemp; int i; struct XMM_Move xmmparms; discardgraphics(); /* if any emm/xmm in use from prior call, release it */ swaptotlen = (long)(vxdots > sxdots ? vxdots : sxdots) * (long)sydots; i = colors; while (i <= 16) { swaptotlen >>= 1; i = i * i; } swapoffset = 0; if (debugflag != 420 && debugflag != 422 /* 422=xmm test, 420=disk test */ && (swapsavebuf = emmquery()) != NULL && (memhandle = emmallocate((unsigned int)((swaptotlen + 16383) >> 14))) != 0) { swaptype = 0; /* use expanded memory */ swapblklen = 16384; } else if (debugflag != 420 && xmmquery() !=0 && (memhandle = xmmallocate((unsigned int)((swaptotlen + 1023) >> 10))) != 0) { swaptype = 1; /* use extended memory */ swapblklen = 16384; } else { swaptype = 2; /* use disk */ swapblklen = 4096; /* MCP 7-7-91, If 'memhandle' is an 'unsigned int', how is it ever going to be equal to -1? if ((memhandle = open(diskfilename,O_CREAT|O_WRONLY|O_BINARY,S_IWRITE)) == -1) { */ if ((memhandle = open(diskfilename,O_CREAT|O_WRONLY|O_BINARY,S_IWRITE)) == 0xffff) { dskfile_error: setvideotext(); /* text mode */ setclear(); { extern char diskfilename[]; static char far s1[] = {"error in temp file "}; static char far s2[] = { " (disk full?) - aborted\n\n"}; printf("%Fs%s%Fs",s1,diskfilename,s2); } exit(1); } made_dsktemp = 1; } while (swapoffset < swaptotlen) { swaplength = swapblklen; if ((swapoffset & (swapblklen-1)) != 0) swaplength = swapblklen - (swapoffset & (swapblklen-1)); if (swaplength > swaptotlen - swapoffset) swaplength = swaptotlen - swapoffset; (*swapsetup)(); /* swapoffset,swaplength -> sets swapvidbuf,swaplength */ switch(swaptype) { case 0: emmgetpage((unsigned int)(swapoffset>>14),memhandle); movewords(swaplength>>1,swapvidbuf, swapsavebuf+(swapoffset&(swapblklen-1))); break; case 1: xmmparms.Length = swaplength; xmmparms.SourceHandle = 0; /* Source is conventional memory */ xmmparms.SourceOffset = (unsigned long)swapvidbuf; xmmparms.DestHandle = memhandle; xmmparms.DestOffset = swapoffset; xmmmoveextended(&xmmparms); break; default: movewords(swaplength>>1,swapvidbuf,(BYTE far *)suffix); if (write(memhandle,suffix,swaplength) == -1) goto dskfile_error; } swapoffset += swaplength; } if (swaptype == 2) close(memhandle); return 0; } void restoregraphics() { struct XMM_Move xmmparms; swapoffset = 0; if (swaptype == 2) memhandle = open(diskfilename,O_RDONLY|O_BINARY,S_IREAD); swapvidbuf = MK_FP(extraseg+0x1000,0); /* for swapnormwrite case */ while (swapoffset < swaptotlen) { swaplength = swapblklen; if ((swapoffset & (swapblklen-1)) != 0) swaplength = swapblklen - (swapoffset & (swapblklen-1)); if (swaplength > swaptotlen - swapoffset) swaplength = swaptotlen - swapoffset; if (swapsetup != swapnormread) (*swapsetup)(); /* swapoffset,swaplength -> sets swapvidbuf,swaplength */ switch(swaptype) { case 0: emmgetpage((unsigned int)(swapoffset>>14),memhandle); movewords(swaplength>>1,swapsavebuf+(swapoffset&(swapblklen-1)), swapvidbuf); break; case 1: xmmparms.Length = swaplength; xmmparms.SourceHandle = memhandle; xmmparms.SourceOffset = swapoffset; xmmparms.DestHandle = 0; /* conventional memory */ xmmparms.DestOffset = (unsigned long)swapvidbuf; xmmmoveextended(&xmmparms); break; default: read(memhandle,suffix,swaplength); movewords(swaplength>>1,(BYTE far *)suffix,swapvidbuf); } if (swapsetup == swapnormread) swapnormwrite(); swapoffset += swaplength; } if (swaptype == 2) close(memhandle); discardgraphics(); } #endif void discardgraphics() /* release expanded/extended memory if any in use */ { #ifndef XFRACT switch(swaptype) { case 0: emmdeallocate(memhandle); break; case 1: xmmdeallocate(memhandle); } swaptype = -1; #endif } extern int badconfig; extern struct videoinfo far videotable[]; struct videoinfo far *vidtbl; /* temporarily loaded fractint.cfg info */ int vidtbllen; /* number of entries in above */ int load_fractint_cfg(int options) { /* Reads fractint.cfg, loading videoinfo entries into extraseg. */ /* Sets vidtbl pointing to the loaded table, and returns the */ /* number of entries (also sets vidtbllen to this). */ /* Past vidtbl, cfglinenums are stored for update_fractint_cfg. */ /* If fractint.cfg is not found or invalid, issues a message */ /* (first time the problem occurs only, and only if options is */ /* zero) and uses the hard-coded table. */ FILE *cfgfile; struct videoinfo far *vident; int far *cfglinenums; int linenum; int i, j, keynum, ax, bx, cx, dx, dotmode, xdots, ydots, colors; int commas[10]; int textsafe2; char tempstring[150]; vidtbl = MK_FP(extraseg,0); cfglinenums = (int far *)(&vidtbl[MAXVIDEOMODES]); #ifdef XFRACT badconfig = -1; #endif if (badconfig) /* fractint.cfg already known to be missing or bad */ goto use_resident_table; findpath("fractint.cfg",tempstring); if (tempstring[0] == 0 /* can't find the file */ || (cfgfile = fopen(tempstring,"r")) == NULL) /* can't open it */ goto bad_fractint_cfg; vidtbllen = 0; linenum = 0; vident = vidtbl; while (vidtbllen < MAXVIDEOMODES && fgets(tempstring, 120, cfgfile)) { ++linenum; if (tempstring[0] == ';') continue; /* comment line */ tempstring[120] = 0; tempstring[strlen(tempstring)-1] = 0; /* zap trailing \n */ memset(commas,0,20); i = j = -1; while (1) { if (tempstring[++i] < ' ') { if (tempstring[i] == 0) break; tempstring[i] = ' '; /* convert tab (or whatever) to blank */ } else if (tempstring[i] == ',' && ++j < 10) { commas[j] = i + 1; /* remember start of next field */ tempstring[i] = 0; /* make field a separate string */ } } keynum = check_vidmode_keyname(tempstring); sscanf(&tempstring[commas[1]],"%x",&ax); sscanf(&tempstring[commas[2]],"%x",&bx); sscanf(&tempstring[commas[3]],"%x",&cx); sscanf(&tempstring[commas[4]],"%x",&dx); dotmode = atoi(&tempstring[commas[5]]); xdots = atoi(&tempstring[commas[6]]); ydots = atoi(&tempstring[commas[7]]); colors = atoi(&tempstring[commas[8]]); textsafe2 = dotmode / 100; dotmode %= 100; if (j != 9 || keynum < 0 || dotmode < 0 || dotmode > 30 || textsafe2 < 0 || textsafe2 > 4 || xdots < 160 || xdots > MAXPIXELS || ydots < 160 || ydots > MAXPIXELS || (colors != 0 && colors != 2 && colors != 4 && colors != 16 && colors != 256) ) goto bad_fractint_cfg; cfglinenums[vidtbllen] = linenum; /* for update_fractint_cfg */ far_memcpy(vident->name, (char far *)&tempstring[commas[0]],25); far_memcpy(vident->comment,(char far *)&tempstring[commas[9]],25); vident->name[25] = vident->comment[25] = 0; vident->keynum = keynum; vident->videomodeax = ax; vident->videomodebx = bx; vident->videomodecx = cx; vident->videomodedx = dx; vident->dotmode = textsafe2 * 100 + dotmode; vident->xdots = xdots; vident->ydots = ydots; vident->colors = colors; ++vident; ++vidtbllen; } fclose(cfgfile); return (vidtbllen); bad_fractint_cfg: badconfig = -1; /* bad, no message issued yet */ if (options == 0) bad_fractint_cfg_msg(); use_resident_table: vidtbllen = 0; vident = vidtbl; for (i = 0; i < MAXVIDEOTABLE; ++i) { if (videotable[i].xdots) { far_memcpy((char far *)vident,(char far *)&videotable[i], sizeof(*vident)); ++vident; ++vidtbllen; } } return (vidtbllen); } void bad_fractint_cfg_msg() { static char far badcfgmsg[]={"\ File FRACTINT.CFG is missing or invalid.\n\ See Hardware Support and Video Modes in the full documentation for help.\n\ I will continue with only the built-in video modes available."}; stopmsg(0,badcfgmsg); badconfig = 1; /* bad, message issued */ } void load_videotable(int options) { /* Loads fractint.cfg and copies the video modes which are */ /* assigned to function keys into videotable. */ int keyents,i; load_fractint_cfg(options); /* load fractint.cfg to extraseg */ keyents = 0; far_memset((char far *)videotable,0,sizeof(*vidtbl)*MAXVIDEOTABLE); for (i = 0; i < vidtbllen; ++i) { if (vidtbl[i].keynum > 0) { far_memcpy((char far *)&videotable[keyents],(char far *)&vidtbl[i], sizeof(*vidtbl)); if (++keyents >= MAXVIDEOTABLE) break; } } } int check_vidmode_key(int option,int k) { int i; /* returns videotable entry number if the passed keystroke is a */ /* function key currently assigned to a video mode, -1 otherwise */ if (k == 1400) /* special value from select_vid_mode */ return(MAXVIDEOTABLE-1); /* for last entry with no key assigned */ if (k != 0) if (option == 0) { /* check resident video mode table */ for (i = 0; i < MAXVIDEOTABLE; ++i) { if (videotable[i].keynum == k) return(i); } } else { /* check full vidtbl */ for (i = 0; i < vidtbllen; ++i) { if (vidtbl[i].keynum == k) return(i); } } return(-1); } int check_vidmode_keyname(char *kname) { /* returns key number for the passed keyname, 0 if not a keyname */ int i,keyset; keyset = 1058; if (*kname == 'S' || *kname == 's') { keyset = 1083; ++kname; } else if (*kname == 'C' || *kname == 'c') { keyset = 1093; ++kname; } else if (*kname == 'A' || *kname == 'a') { keyset = 1103; ++kname; } if (*kname != 'F' && *kname != 'f') return(0); if (*++kname < '1' || *kname > '9') return(0); i = *kname - '0'; if (*++kname != 0 && *kname != ' ') { if (*kname != '0' || i != 1) return(0); i = 10; ++kname; } while (*kname) if (*(kname++) != ' ') return(0); if ((i += keyset) < 2) i = 0; return(i); } void vidmode_keyname(int k,char *buf) { /* set buffer to name of passed key number */ *buf = 0; if (k > 0) { if (k > 1103) { *(buf++) = 'A'; k -= 1103; } else if (k > 1093) { *(buf++) = 'C'; k -= 1093; } else if (k > 1083) { *(buf++) = 'S'; k -= 1083; } else k -= 1058; sprintf(buf,"F%d",k); } }