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volume27
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screen-3.5.1
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part04
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mark.c
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1993-08-08
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/* Copyright (c) 1993
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
* Copyright (c) 1987 Oliver Laumann
*
* This program 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.
*
* This program 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 this program (see the file COPYING); if not, write to the
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
****************************************************************
*/
#include "rcs.h"
RCS_ID("$Id: mark.c,v 1.4 1993/07/30 01:24:47 jnweiger Exp $ FAU")
#include <sys/types.h>
#include "config.h"
#include "screen.h"
#include "mark.h"
#include "extern.h"
#ifdef COPY_PASTE
static int is_letter __P((int));
static void nextword __P((int *, int *, int, int));
static int linestart __P((int));
static int lineend __P((int));
static int rem __P((int, int , int , int , int , char *, int));
static int eq __P((int, int ));
static int MarkScrollDownDisplay __P((int));
static int MarkScrollUpDisplay __P((int));
static void MarkProcess __P((char **, int *));
static void MarkAbort __P((void));
static void MarkRedisplayLine __P((int, int, int, int));
static int MarkRewrite __P((int, int, int, int));
static void MarkSetCursor __P((void));
extern struct win *fore;
extern struct display *display;
extern char *null, *blank;
#ifdef NETHACK
extern nethackflag;
#endif
static struct LayFuncs MarkLf =
{
MarkProcess,
MarkAbort,
MarkRedisplayLine,
DefClearLine,
MarkRewrite,
MarkSetCursor,
DefResize,
DefRestore
};
int join_with_cr = 0;
char mark_key_tab[256]; /* this array must be initialised first! */
static struct markdata *markdata;
/*
* VI like is_letter: 0 - whitespace
* 1 - letter
* 2 - other
*/
static int is_letter(c)
char c;
{
if ((c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
(c >= '0' && c <= '9') ||
c == '_' || c == '.' ||
c == '@' || c == ':' ||
c == '%' || c == '!' ||
c == '-' || c == '+')
/* thus we can catch email-addresses as a word :-) */
return 1;
else if (c != ' ')
return 2;
return 0;
}
static int
linestart(y)
int y;
{
register int x;
register char *i;
for (x = markdata->left_mar, i = iWIN(y) + x; x < d_width - 1; x++)
if (*i++ != ' ')
break;
if (x == d_width - 1)
x = markdata->left_mar;
return(x);
}
static int
lineend(y)
int y;
{
register int x;
register char *i;
for (x = markdata->right_mar, i = iWIN(y) + x; x >= 0; x--)
if (*i-- != ' ')
break;
if (x < 0)
x = markdata->left_mar;
return(x);
}
/*
* nextword calculates the cursor position of the num'th word.
* If the cursor is on a word, it counts as the first.
* NW_BACK: search backward
* NW_ENDOFWORD: find the end of the word
* NW_MUSTMOVE: move at least one char
*/
#define NW_BACK (1<<0)
#define NW_ENDOFWORD (1<<1)
#define NW_MUSTMOVE (1<<2)
static void
nextword(xp, yp, flags, num)
int *xp, *yp, flags, num;
{
int xx = d_width, yy = fore->w_histheight + d_height;
register int sx, oq, q, x, y;
x = *xp;
y = *yp;
sx = (flags & NW_BACK) ? -1 : 1;
if ((flags & NW_ENDOFWORD) && (flags & NW_MUSTMOVE))
x += sx;
for (oq = -1; ; x += sx, oq = q)
{
if (x >= xx || x < 0)
q = 0;
else
q = is_letter(iWIN(y)[x]);
if (oq >= 0 && oq != q)
{
if (oq == 0 || !(flags & NW_ENDOFWORD))
*xp = x;
else
*xp = x-sx;
*yp = y;
if ((!(flags & NW_ENDOFWORD) && q) ||
((flags & NW_ENDOFWORD) && oq))
{
if (--num <= 0)
return;
}
}
if (x == xx)
{
x = -1;
if (++y >= yy)
return;
}
else if (x < 0)
{
x = xx;
if (--y < 0)
return;
}
}
}
/*
* y1, y2 are WIN coordinates
*
* redisplay: 0 - just copy
* 1 - redisplay + copy
* 2 - count + copy, don't redisplay
*/
static int
rem(x1, y1, x2, y2, redisplay, pt, yend)
int x1, y1, x2, y2, redisplay, yend;
char *pt;
{
int i, j, from, to, ry;
int l = 0;
char *im;
markdata->second = 0;
if (y2 < y1 || ((y2 == y1) && (x2 < x1)))
{
i = y2;
y2 = y1;
y1 = i;
i = x2;
x2 = x1;
x1 = i;
}
ry = y1 - markdata->hist_offset;
i = y1;
if (redisplay != 2 && pt == 0 && ry <0)
{
i -= ry;
ry = 0;
}
for (; i <= y2; i++, ry++)
{
if (redisplay != 2 && pt == 0 && ry > yend)
break;
from = (i == y1) ? x1 : 0;
if (from < markdata->left_mar)
from = markdata->left_mar;
for (to = d_width, im = iWIN(i) + to; to >= 0; to--)
if (*im-- != ' ')
break;
if (i == y2 && x2 < to)
to = x2;
if (to > markdata->right_mar)
to = markdata->right_mar;
if (redisplay == 1 && from <= to && ry >=0 && ry <= yend)
MarkRedisplayLine(ry, from, to, 0);
if (redisplay != 2 && pt == 0) /* don't count/copy */
continue;
for (j = from, im = iWIN(i)+from; j <= to; j++)
{
if (pt)
*pt++ = *im++;
l++;
}
if (i != y2 && (to != d_width - 1 || iWIN(i)[to + 1] == ' '))
{
/*
* this code defines, what glues lines together
*/
switch (markdata->nonl)
{
case 0: /* lines separated by newlines */
if (join_with_cr)
{
if (pt)
*pt++ = '\r';
l++;
}
if (pt)
*pt++ = '\n';
l++;
break;
case 1: /* nothing to separate lines */
break;
case 2: /* lines separated by blanks */
if (pt)
*pt++ = ' ';
l++;
break;
}
}
}
return(l);
}
/* Check if two chars are identical. All digits are treatened
* as same. Used for GetHistory()
*/
static int
eq(a, b)
int a, b;
{
if (a == b)
return 1;
if (a == 0 || b == 0)
return 1;
if (a <= '9' && a >= '0' && b <= '9' && b >= '0')
return 1;
return 0;
}
int
GetHistory() /* return value 1 if u_copybuffer changed */
{
int i = 0, q = 0, xx, yy, x, y;
char *linep;
x = fore->w_x;
if (x >= d_width)
x = d_width - 1;
y = fore->w_y + fore->w_histheight;
debug2("cursor is at x=%d, y=%d\n", x, y);
for (xx = x - 1, linep = iWIN(y) + xx; xx >= 0; xx--)
if ((q = *linep--) != ' ' )
break;
debug3("%c at (%d,%d)\n", q, xx, y);
for (yy = y - 1; yy >= 0; yy--)
{
linep = iWIN(yy);
if (xx < 0 || eq(linep[xx], q))
{ /* line is matching... */
for (i = d_width - 1, linep += i; i >= x; i--)
if (*linep-- != ' ')
break;
if (i >= x)
break;
}
}
if (yy < 0)
return 0;
if (d_user->u_copybuffer != NULL)
UserFreeCopyBuffer(d_user);
if ((d_user->u_copybuffer = malloc((unsigned) (i - x + 2))) == NULL)
{
Msg(0, "Not enough memory... Sorry.");
return 0;
}
bcopy(linep - i + x + 1, d_user->u_copybuffer, i - x + 1);
d_user->u_copylen = i - x + 1;
return 1;
}
void
MarkRoutine()
{
int x, y;
ASSERT(fore->w_active);
if (InitOverlayPage(sizeof(*markdata), &MarkLf, 1))
return;
markdata = (struct markdata *)d_lay->l_data;
markdata->second = 0;
markdata->rep_cnt = 0;
markdata->append_mode = 0;
markdata->write_buffer = 0;
markdata->nonl = 0;
markdata->left_mar = 0;
markdata->right_mar = d_width - 1;
markdata->hist_offset = fore->w_histheight;
x = fore->w_x;
y = D2W(fore->w_y);
if (x >= d_width)
x = d_width - 1;
GotoPos(x, W2D(y));
#ifdef NETHACK
if (nethackflag)
Msg(0, "Welcome to hacker's treasure zoo - Column %d Line %d(+%d) (%d,%d)",
x + 1, W2D(y + 1), fore->w_histheight, d_width, d_height);
else
#endif
Msg(0, "Copy mode - Column %d Line %d(+%d) (%d,%d)",
x + 1, W2D(y + 1), fore->w_histheight, d_width, d_height);
markdata->cx = markdata->x1 = x;
markdata->cy = markdata->y1 = y;
}
static void
MarkSetCursor()
{
markdata = (struct markdata *)d_lay->l_data;
fore = d_fore;
GotoPos(markdata->cx, W2D(markdata->cy));
}
static void
MarkProcess(inbufp,inlenp)
char **inbufp;
int *inlenp;
{
char *inbuf, *pt;
int inlen;
int cx, cy, x2, y2, j, yend;
int newcopylen = 0, od;
int in_mark;
int rep_cnt;
/*
char *extrap = 0, extrabuf[100];
*/
markdata = (struct markdata *)d_lay->l_data;
fore = d_fore;
if (inbufp == 0)
{
MarkAbort();
return;
}
GotoPos(markdata->cx, W2D(markdata->cy));
inbuf= *inbufp;
inlen= *inlenp;
pt = inbuf;
in_mark = 1;
while (in_mark && (inlen /* || extrap */))
{
/*
if (extrap)
{
od = *extrap++;
if (*extrap == 0)
extrap = 0;
}
else
*/
{
od = mark_key_tab[(unsigned int)*pt++];
inlen--;
}
rep_cnt = markdata->rep_cnt;
if (od >= '0' && od <= '9')
{
if (rep_cnt < 1001 && (od != '0' || rep_cnt != 0))
{
markdata->rep_cnt = 10 * rep_cnt + od - '0';
continue;
/*
* Now what is that 1001 here? Well, we have a screen with
* 25 * 80 = 2000 characters. Movement is at most across the full
* screen. This we do with word by word movement, as character by
* character movement never steps over line boundaries. The most words
* we can place on the screen are 1000 single letter words. Thus 1001
* is sufficient. Users with bigger screens never write in single letter
* words, as they should be more advanced. jw.
* Oh, wrong. We still give even the experienced user a factor of ten.
*/
}
}
cx = markdata->cx;
cy = markdata->cy;
switch (od)
{
case '\014': /* CTRL-L Redisplay */
Redisplay(0);
GotoPos(cx, W2D(cy));
break;
case '\010': /* CTRL-H Backspace */
case 'h':
if (rep_cnt == 0)
rep_cnt = 1;
revto(cx - rep_cnt, cy);
break;
case '\016': /* CTRL-N */
case 'j':
if (rep_cnt == 0)
rep_cnt = 1;
revto(cx, cy + rep_cnt);
break;
case '+':
if (rep_cnt == 0)
rep_cnt = 1;
j = cy + rep_cnt;
if (j > fore->w_histheight + d_height - 1)
j = fore->w_histheight + d_height - 1;
revto(linestart(j), j);
break;
case '-':
if (rep_cnt == 0)
rep_cnt = 1;
cy -= rep_cnt;
if (cy < 0)
cy = 0;
revto(linestart(cy), cy);
break;
case '^':
revto(linestart(cy), cy);
break;
case '\n':
revto(markdata->left_mar, cy + 1);
break;
case 'k':
case '\020': /* CTRL-P */
if (rep_cnt == 0)
rep_cnt = 1;
revto(cx, cy - rep_cnt);
break;
case 'l':
if (rep_cnt == 0)
rep_cnt = 1;
revto(cx + rep_cnt, cy);
break;
case '\001': /* CTRL-A from tcsh/emacs */
case '0':
revto(markdata->left_mar, cy);
break;
case '\004': /* CTRL-D down half screen */
if (rep_cnt == 0)
rep_cnt = (d_height + 1) >> 1;
revto_line(cx, cy + rep_cnt, W2D(cy));
break;
case '$':
revto(lineend(cy), cy);
break;
case '\022': /* CTRL-R emacs style backwards search */
ISearch(-1);
in_mark = 0;
break;
case '\023': /* CTRL-S emacs style search */
ISearch(1);
in_mark = 0;
break;
case '\025': /* CTRL-U up half screen */
if (rep_cnt == 0)
rep_cnt = (d_height + 1) >> 1;
revto_line(cx, cy - rep_cnt, W2D(cy));
break;
case '\007': /* CTRL-G show cursorpos */
if (markdata->left_mar == 0 && markdata->right_mar == d_width - 1)
Msg(0, "Column %d Line %d(+%d)", cx+1, W2D(cy)+1,
markdata->hist_offset);
else
Msg(0, "Column %d(%d..%d) Line %d(+%d)", cx+1,
markdata->left_mar+1, markdata->right_mar+1, W2D(cy)+1, markdata->hist_offset);
break;
case '\002': /* CTRL-B back one page */
if (rep_cnt == 0)
rep_cnt = 1;
rep_cnt *= d_height;
revto(cx, cy - rep_cnt);
break;
case '\006': /* CTRL-F forward one page */
if (rep_cnt == 0)
rep_cnt = 1;
rep_cnt *= d_height;
revto(cx, cy + rep_cnt);
break;
case '\005': /* CTRL-E scroll up */
if (rep_cnt == 0)
rep_cnt = 1;
rep_cnt = MarkScrollUpDisplay(rep_cnt);
if (cy < D2W(0))
revto(cx, D2W(0));
else
GotoPos(cx, W2D(cy));
break;
case '\031': /* CTRL-Y scroll down */
if (rep_cnt == 0)
rep_cnt = 1;
rep_cnt = MarkScrollDownDisplay(rep_cnt);
if (cy > D2W(d_height-1))
revto(cx, D2W(d_height-1));
else
GotoPos(cx, W2D(cy));
break;
case '@':
/* it may be usefull to have a key that does nothing */
break;
case '%':
rep_cnt--;
/* rep_cnt is a percentage for the history buffer */
if (rep_cnt < 0)
rep_cnt = 0;
if (rep_cnt > 100)
rep_cnt = 100;
revto_line(markdata->left_mar, (rep_cnt * (fore->w_histheight + d_height)) / 100, (d_height - 1) / 2);
break;
case 'g':
rep_cnt = 1;
/* FALLTHROUGH */
case 'G':
/* rep_cnt is here the WIN line number */
if (rep_cnt == 0)
rep_cnt = fore->w_histheight + d_height;
revto_line(markdata->left_mar, --rep_cnt, (d_height - 1) / 2);
break;
case 'H':
revto(markdata->left_mar, D2W(0));
break;
case 'M':
revto(markdata->left_mar, D2W((d_height - 1) / 2));
break;
case 'L':
revto(markdata->left_mar, D2W(d_height - 1));
break;
case '|':
revto(--rep_cnt, cy);
break;
case 'w':
if (rep_cnt == 0)
rep_cnt = 1;
nextword(&cx, &cy, NW_MUSTMOVE, rep_cnt);
revto(cx, cy);
break;
case 'e':
if (rep_cnt == 0)
rep_cnt = 1;
nextword(&cx, &cy, NW_ENDOFWORD|NW_MUSTMOVE, rep_cnt);
revto(cx, cy);
break;
case 'b':
if (rep_cnt == 0)
rep_cnt = 1;
nextword(&cx, &cy, NW_BACK|NW_ENDOFWORD|NW_MUSTMOVE, rep_cnt);
revto(cx, cy);
break;
case 'a':
markdata->append_mode = 1 - markdata->append_mode;
debug1("append mode %d--\n", markdata->append_mode);
Msg(0, (markdata->append_mode) ? ":set append" : ":set noappend");
break;
case 'v':
case 'V':
/* this sets start column to column 9 for VI :set nu users */
if (markdata->left_mar == 8)
rep_cnt = 1;
else
rep_cnt = 9;
/* FALLTHROUGH */
case 'c':
case 'C':
/* set start column (c) and end column (C) */
if (markdata->second)
{
rem(markdata->x1, markdata->y1, cx, cy, 1, (char *)0, d_height-1); /* Hack */
markdata->second = 1; /* rem turns off second */
}
rep_cnt--;
if (rep_cnt < 0)
rep_cnt = cx;
if (od != 'C')
{
markdata->left_mar = rep_cnt;
if (markdata->left_mar > markdata->right_mar)
markdata->left_mar = markdata->right_mar;
}
else
{
markdata->right_mar = rep_cnt;
if (markdata->left_mar > markdata->right_mar)
markdata->right_mar = markdata->left_mar;
}
if (markdata->second)
{
markdata->cx = markdata->x1; markdata->cy = markdata->y1;
revto(cx, cy);
}
if (od == 'v' || od == 'V')
Msg(0, (markdata->left_mar != 8) ? ":set nonu" : ":set nu");
break;
case 'J':
/* how do you join lines in VI ? */
markdata->nonl = (markdata->nonl + 1) % 3;
switch (markdata->nonl)
{
case 0:
if (join_with_cr)
Msg(0, "Multiple lines (CR/LF)");
else
Msg(0, "Multiple lines (LF)");
break;
case 1:
Msg(0, "Lines joined");
break;
case 2:
Msg(0, "Lines joined with blanks");
break;
}
break;
case '/':
Search(1);
in_mark = 0;
break;
case '?':
Search(-1);
in_mark = 0;
break;
case 'n':
Search(0);
break;
case 'y':
case 'Y':
if (markdata->second == 0)
{
revto(linestart(cy), cy);
markdata->second++;
cx = markdata->x1 = markdata->cx;
cy = markdata->y1 = markdata->cy;
}
if (--rep_cnt > 0)
revto(cx, cy + rep_cnt);
revto(lineend(markdata->cy), markdata->cy);
if (od == 'y')
break;
/* FALLTHROUGH */
case 'W':
if (od == 'W')
{
if (rep_cnt == 0)
rep_cnt = 1;
if (!markdata->second)
{
nextword(&cx, &cy, NW_BACK|NW_ENDOFWORD, 1);
revto(cx, cy);
markdata->second++;
cx = markdata->x1 = markdata->cx;
cy = markdata->y1 = markdata->cy;
}
nextword(&cx, &cy, NW_ENDOFWORD, rep_cnt);
revto(cx, cy);
}
cx = markdata->cx;
cy = markdata->cy;
/* FALLTHROUGH */
case 'A':
if (od == 'A')
markdata->append_mode = 1;
/* FALLTHROUGH */
case '>':
if (od == '>')
markdata->write_buffer = 1;
/* FALLTHROUGH */
case ' ':
case '\r':
if (!markdata->second)
{
markdata->second++;
markdata->x1 = cx;
markdata->y1 = cy;
revto(cx, cy);
#ifdef NETHACK
if (nethackflag)
Msg(0, "You drop a magic marker - Column %d Line %d",
cx+1, W2D(cy)+1);
else
#endif
Msg(0, "First mark set - Column %d Line %d", cx+1, W2D(cy)+1);
break;
}
else
{
int append_mode = markdata->append_mode;
int write_buffer = markdata->write_buffer;
x2 = cx;
y2 = cy;
newcopylen = rem(markdata->x1, markdata->y1, x2, y2, 2, (char *)0, 0); /* count */
if (d_user->u_copybuffer != NULL && !append_mode)
{
UserFreeCopyBuffer(d_user);
}
if (newcopylen > 0)
{
/* the +3 below is for : cr + lf + \0 */
if (d_user->u_copybuffer != NULL)
d_user->u_copybuffer = realloc(d_user->u_copybuffer,
(unsigned) (d_user->u_copylen + newcopylen + 3));
else
{
d_user->u_copylen = 0;
d_user->u_copybuffer = malloc((unsigned) (newcopylen + 3));
}
if (d_user->u_copybuffer == NULL)
{
MarkAbort();
in_mark = 0;
Msg(0, "Not enough memory... Sorry.");
d_user->u_copylen = 0;
d_user->u_copybuffer = NULL;
break;
}
if (append_mode)
{
switch (markdata->nonl)
{
/*
* this code defines, what glues lines together
*/
case 0:
if (join_with_cr)
{
d_user->u_copybuffer[d_user->u_copylen] = '\r';
d_user->u_copylen++;
}
d_user->u_copybuffer[d_user->u_copylen] = '\n';
d_user->u_copylen++;
break;
case 1:
break;
case 2:
d_user->u_copybuffer[d_user->u_copylen] = ' ';
d_user->u_copylen++;
break;
}
}
yend = d_height - 1;
if (fore->w_histheight - markdata->hist_offset < d_height)
{
markdata->second = 0;
yend -= MarkScrollUpDisplay(fore->w_histheight - markdata->hist_offset);
}
d_user->u_copylen += rem(markdata->x1, markdata->y1, x2, y2,
markdata->hist_offset == fore->w_histheight,
d_user->u_copybuffer + d_user->u_copylen, yend);
}
if (markdata->hist_offset != fore->w_histheight)
LAY_CALL_UP(Activate(0));
ExitOverlayPage();
if (append_mode)
Msg(0, "Appended %d characters to buffer",
newcopylen);
else
Msg(0, "Copied %d characters into buffer", d_user->u_copylen);
if (write_buffer)
WriteFile(DUMP_EXCHANGE);
in_mark = 0;
break;
}
default:
MarkAbort();
#ifdef NETHACK
if (nethackflag)
Msg(0, "You escaped the dungeon.");
else
#endif
Msg(0, "Copy mode aborted");
in_mark = 0;
break;
}
if (in_mark) /* markdata may be freed */
markdata->rep_cnt = 0;
}
*inbufp = pt;
*inlenp = inlen;
}
void revto(tx, ty)
int tx, ty;
{
revto_line(tx, ty, -1);
}
/* tx, ty: WINDOW, line: DISPLAY */
void revto_line(tx, ty, line)
int tx, ty, line;
{
int fx, fy;
int x, y, t, revst, reven, qq, ff, tt, st, en, ce = 0;
int ystart = 0, yend = d_height-1;
int i, ry;
if (tx < 0)
tx = 0;
else if (tx > d_width - 1)
tx = d_width -1;
if (ty < 0)
ty = 0;
else if (ty > fore->w_histheight + d_height - 1)
ty = fore->w_histheight + d_height - 1;
fx = markdata->cx; fy = markdata->cy;
markdata->cx = tx; markdata->cy = ty;
/*
* if we go to a position that is currently offscreen
* then scroll the screen
*/
i = 0;
if (line >= 0 && line < d_height)
i = W2D(ty) - line;
else if (ty < markdata->hist_offset)
i = ty - markdata->hist_offset;
else if (ty > markdata->hist_offset + (d_height-1))
i = ty-markdata->hist_offset-(d_height-1);
if (i > 0)
yend -= MarkScrollUpDisplay(i);
else if (i < 0)
ystart += MarkScrollDownDisplay(-i);
if (markdata->second == 0)
{
GotoPos(tx, W2D(ty));
return;
}
qq = markdata->x1 + markdata->y1 * d_width;
ff = fx + fy * d_width; /* "from" offset in WIN coords */
tt = tx + ty * d_width; /* "to" offset in WIN coords*/
if (ff > tt)
{
st = tt; en = ff;
x = tx; y = ty;
}
else
{
st = ff; en = tt;
x = fx; y = fy;
}
if (st > qq)
{
st++;
x++;
}
if (en < qq)
en--;
if (tt > qq)
{
revst = qq; reven = tt;
}
else
{
revst = tt; reven = qq;
}
ry = y - markdata->hist_offset;
if (ry < ystart)
{
y += (ystart - ry);
x = 0;
st = y * d_width;
ry = ystart;
}
for (t = st; t <= en; t++, x++)
{
if (x >= d_width)
{
x = 0;
y++, ry++;
}
if (ry > yend)
break;
if (t == st || x == 0)
{
for (ce = d_width; ce >= 0; ce--)
if (iWIN(y)[ce] != ' ')
break;
}
if (x <= ce && x >= markdata->left_mar && x <= markdata->right_mar
&& (CLP || x < d_width-1 || ry < d_bot))
{
GotoPos(x, W2D(y));
if (t >= revst && t <= reven)
SetAttrFont(A_SO, ASCII);
else
SetAttrFont(aWIN(y)[x], fWIN(y)[x]);
PUTCHARLP(iWIN(y)[x]);
}
}
GotoPos(tx, W2D(ty));
}
static void
MarkAbort()
{
int yend, redisp;
debug("MarkAbort\n");
markdata = (struct markdata *)d_lay->l_data;
fore = d_fore;
yend = d_height - 1;
redisp = markdata->second;
if (fore->w_histheight - markdata->hist_offset < d_height)
{
markdata->second = 0;
yend -= MarkScrollUpDisplay(fore->w_histheight - markdata->hist_offset);
}
if (markdata->hist_offset != fore->w_histheight)
{
LAY_CALL_UP(Activate(0));
}
else
{
rem(markdata->x1, markdata->y1, markdata->cx, markdata->cy, redisp, (char *)0, yend);
}
ExitOverlayPage();
}
static void
MarkRedisplayLine(y, xs, xe, isblank)
int y; /* NOTE: y is in DISPLAY coords system! */
int xs, xe;
int isblank;
{
int x, i, rm;
int sta, sto, cp; /* NOTE: these 3 are in WINDOW coords system */
char *wi, *wa, *wf, *oldi;
if (y < 0) /* No special full page handling */
return;
markdata = (struct markdata *)d_lay->l_data;
fore = d_fore;
wi = iWIN(D2W(y));
wa = aWIN(D2W(y));
wf = fWIN(D2W(y));
oldi = isblank ? blank : null;
if (markdata->second == 0)
{
DisplayLine(oldi, null, null, wi, wa, wf, y, xs, xe);
return;
}
sta = markdata->y1 * d_width + markdata->x1;
sto = markdata->cy * d_width + markdata->cx;
if (sta > sto)
{
i=sta; sta=sto; sto=i;
}
cp = D2W(y) * d_width + xs;
rm = markdata->right_mar;
for (x = d_width; x >= 0; x--)
if (wi[x] != ' ')
break;
if (x < rm)
rm = x;
for (x = xs; x <= xe; x++, cp++)
if (cp >= sta && x >= markdata->left_mar)
break;
if (x > xs)
DisplayLine(oldi, null, null, wi, wa, wf, y, xs, x-1);
for (; x <= xe; x++, cp++)
{
if (cp > sto || x > rm || (!CLP && x >= d_width-1 && y == d_bot))
break;
GotoPos(x, y);
SetAttrFont(A_SO, ASCII);
PUTCHARLP(wi[x]);
}
if (x <= xe)
DisplayLine(oldi, null, null, wi, wa, wf, y, x, xe);
}
/*
* This ugly routine is to speed up GotoPos()
*/
static int
MarkRewrite(ry, xs, xe, doit)
int ry, xs, xe, doit;
{
int dx, x, y, st, en, t, rm;
char *a, *f, *i;
markdata = (struct markdata *)d_lay->l_data;
fore = d_fore;
y = D2W(ry);
dx = xe - xs;
if (doit)
{
i = iWIN(y) + xs;
while (dx--)
PUTCHARLP(*i++);
return(0);
}
a = aWIN(y) + xs,
f = fWIN(y) + xs;
if (markdata->second == 0)
st = en = -1;
else
{
st = markdata->y1 * d_width + markdata->x1;
en = markdata->cy * d_width + markdata->cx;
if (st > en)
{
t = st; st = en; en = t;
}
}
t = y * d_width + xs;
for (rm=d_width, i=iWIN(y) + d_width; rm>=0; rm--)
if (*i-- != ' ')
break;
if (rm > markdata->right_mar)
rm = markdata->right_mar;
x = xs;
while (dx--)
{
if (t >= st && t <= en && x >= markdata->left_mar && x <= rm)
{
if (d_attr != A_SO || d_font != ASCII)
return(EXPENSIVE);
}
else
{
if (d_attr != *a || d_font != *f)
return(EXPENSIVE);
}
a++, f++, t++, x++;
}
return(xe - xs);
}
/*
* scroll the screen contents up/down.
*/
static int MarkScrollUpDisplay(n)
int n;
{
int i;
debug1("MarkScrollUpDisplay(%d)\n", n);
if (n <= 0)
return 0;
if (n > fore->w_histheight - markdata->hist_offset)
n = fore->w_histheight - markdata->hist_offset;
i = (n < d_height) ? n : (d_height);
ScrollRegion(0, d_height - 1, i);
markdata->hist_offset += n;
while (i-- > 0)
MarkRedisplayLine(d_height - i - 1, 0, d_width - 1, 1);
return n;
}
static int MarkScrollDownDisplay(n)
int n;
{
int i;
debug1("MarkScrollDownDisplay(%d)\n", n);
if (n <= 0)
return 0;
if (n > markdata->hist_offset)
n = markdata->hist_offset;
i = (n < d_height) ? n : (d_height);
ScrollRegion(0, d_height - 1, -i);
markdata->hist_offset -= n;
while (i-- > 0)
MarkRedisplayLine(i, 0, d_width - 1, 1);
return n;
}
#endif /* COPY_PASTE */