/* dispmacros.h --- display macros for niftyterm * * Copyright 1989, Chris Newman * All Rights Reserved * Permission is granted ot copy, modify, and use this as long * as this notice remains intact. This is a nifty program. * * $Author: ppessi $ $Revision: 2.0 $ $Date: 1993/11/15 03:30:07 $ */ #define MAXWIDTH 132 #define MINWIDTH 40 #define MAXHEIGHT 75 #define MINHEIGHT 2 /* This data structure should not need changing for different displays * format of buffers: * disp.sbuf -- x*(y+1) array of line styles * first byte in disp.sbuf line: OR of all styles on line * -- if 0, then no styles, if -1, unused */ extern struct nifty_display { int curx; /* cursor location [0,winwidth),[0,winwinheight) */ int cury; int savex; /* save of cursor position */ int savey; int winwidth; /* window size: columns, rows */ int winheight; int maxwidth; /* width of the buffer */ int maxheight; /* height of the buffer */ int bufwidth; /* width of buffer (maxwidth+1) */ int scrolltop; /* top of scrolling region */ int scrollbot; /* bottom of scrolling region */ int scrollskip; /* amount to jump scroll */ int scrolldefault; /* default scroll skip */ short style; /* current display style */ short savestyle; /* save the display style */ int invert; /* invert the screen */ int insert; /* insert mode */ int origin; /* origin mode -- if 1, origin at scrolltop */ int wrap; /* 0=stop at margin, 1=wrap at margin */ int visual; /* 0=underline cursor, 1=block cursor, 2 = invisible cursor */ int blink; /* 0=no blink, 1=blinking cursor */ char *plines[MAXHEIGHT]; /* array of line pointers (faster scrolling) */ short *pstyles[MAXHEIGHT]; /* array of style pointers (faster scrolling) */ char *buf; /* malloc text buffer */ short *sbuf; /* malloc styles buffer */ char *tabstops; /* malloc flag buffer */ } disp; /* cursor visual attributes */ #define CUR_UNDERLINE 0x00 #define CUR_BLOCK 0x01 #define CUR_INVISIBLE 0x02 #define CUR_BOX 0x04 #define CUR_NOBLINK 0x00 #define CUR_BLINK 0x01 /* attributes */ #define UNDERLINE (0x0001) #define BOLD (0x0002) #define ITALIC (0x0004) #define DOUBLE1 (0x0008) #define DOUBLE2 (0x0010) #define ALTERNATE (0x0020) #define INVERSE (0x0040) #define FLASH (0x0080) #define BLANK (0x0100) #define HALFBRITE (0x0200) #define DOUBLE_MASK (DOUBLE1 | DOUBLE2) /* marcos to access data structure */ #define STYLEFLAG(y) (disp.pstyles[y][disp.maxwidth]) #define LINELENST(y) (disp.plines[y][disp.maxwidth]) #define LINELEN(y) ((unsigned char) LINELENST(y)) #define STYLELINE(y) (disp.pstyles[y]) #define TEXTLINE(y) (disp.plines[y]) #define TEXTPOS(x, y) (disp.plines[y][x]) #define STYLEPOS(x, y) (disp.pstyles[y][x]) /* macros to operate on the display */ #define NEWLINE() if (++disp.cury > disp.scrollbot) {disp.cury-=disp.scrollskip; dsscroll(disp.scrolltop, disp.scrollbot - disp.scrolltop + 1, disp.scrollskip);} #define DSTEST(c, style) /* fill screen with character c, style s */\ { \ register int tx, ty; \ for (ty = 0; ty < disp.winheight; ty++) { \ LINELENST(ty) = disp.winwidth-1; \ STYLEFLAG(ty) = style; \ for (tx = 0; tx < disp.winwidth; tx++) \ TEXTPOS(tx, ty) = (c), STYLEPOS(tx, ty) = (style); \ } \ } #define DSCLEAR(x,y,x1,y1) /* quickly clear out the interal storage */\ { \ register int tempx, tempy; \ int linelen; \ for (tempy = y; tempy <= y1; tempy++) { \ if (x > (linelen = LINELEN(tempy))) \ continue; \ if (x1 > linelen) { \ LINELENST(tempy) = linelen = x; \ } else \ for (tempx = x; tempx <= x1; tempx++) \ TEXTPOS(tempx, tempy) = ' ', STYLEPOS(tempx, tempy) = 0; \ STYLEFLAG(tempy) &= DOUBLE_MASK; \ for (tempx = 0; tempx <= linelen;tempx++) \ STYLEFLAG(tempy) |= STYLEPOS(tempx, tempy); \ } \ } /* clip cursor position, clip lines, and recalculate styles */ #define DSRESIZE() {\ register int x, y;\ int linelen;\ SLIMITCK(disp.curx, disp.winwidth);\ SLIMITCK(disp.cury, disp.winheight);\ for (y = 0; y < disp.winheight; y++) {\ if (disp.winwidth < (linelen=LINELEN(y)))\ LINELENST(y) = linelen = disp.winwidth;\ for (style = STYLEFLAG(y) & DOUBLE_MASK, x = 0;\ x < disp.winwidth && x < linelen; x++)\ style |= STYLEPOS(x,y);\ STYLEFLAG(y) = style;\ }\ SLIMITCK(disp.scrollbot,disp.winheight);\ if (disp.scrolltop >= disp.scrollbot-1)\ disp.scrolltop = 0;\ } #define DSSCROLL(y, amount, numlines)\ if(ABS(amount)<(numlines)) {\ char *templ;\ short *templs;\ int i, maxy;\ if(amount>0) {\ for(i=y,maxy=y+numlines-amount;i=maxy;i--){\ templ=disp.plines[i],templs=disp.pstyles[i];\ disp.plines[i]=disp.plines[i+amount];\ disp.pstyles[i]=disp.pstyles[i+amount];\ disp.plines[i+amount]=templ,disp.pstyles[i+amount]=templs;\ }\ }\ } #define DSEMPTYLINE(top, bottom) /* empty lines from top to bottom-1 */\ { \ register int i; \ for (i = top; i < bottom; i++) \ LINELENST(i) = STYLEFLAG(i) = 0; \ }