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/* The cut-paste module for splitvt */
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "vt100.h"
#include "video.h"
#include "splitvt.h"
#include "terminal.h"
#define RIGHT 0x01
#define LEFT 0x02
#define Min(A,B) ((A>B)?B:A)
#define Max(A,B) ((A>B)?A:B)
/* Variables used by the cut-paste motion functions */
static int marked, oldattr;
static unsigned char on;
extern struct physical physical;
static int lastdirection=0;
/* This function assumes that it alone will print selected text */
static void put_sel_char(win, x, y, oldattr, on, direction)
window *win;
int x, y;
int *oldattr;
unsigned char *on;
int direction;
{
int c, selected=0;
c = get_video(win, x, y);
/* Toggle selection highlighting */
if ( direction ) {
/*fprintf(stderr, "Turning %s...\n", direction == RIGHT ? "right" : "left");*/
if ( lastdirection && lastdirection != direction )
/* We turned... */ ;
else {
c ^= (SELECTED<<8);
selected = ( ((c>>8)&SELECTED) ? 1 : 0 );
}
lastdirection=direction;
} else
c ^= (SELECTED<<8);
(*oldattr)=check_attr(c, *oldattr, (int)on);
put_video(c, win, x, y);
if ( c&0xFF )
printf("%c", c&0xFF);
else
printf(" ");
if ( direction ) {
if ( !selected ) {
if ( direction == RIGHT ) {
if ( y < win->cols )
++y;
else
goto end;
} else {
if ( y > 1 )
--y;
else
goto end;
vt_left(2);
}
c = get_video(win, x, y);
if ( c&0xFF )
printf("%c", c&0xFF);
else
printf(" ");
vt_left(1);
} else if ( direction == LEFT )
vt_left(2);
}
end:
fflush(stdout);
return;
}
/* If this function returns 0, no selection was made */
static char *extract_sel(win, buf, len, mark1, mark2)
int win;
char *buf;
int len;
position *mark1, *mark2;
{
position startsel, endsel;
if ( mark1->x == mark2->x )
{
if ( mark1->y == mark2->y ) {
vt_info("Selection cancelled.");
clrsel_video(win);
reset_bar(1);
return(NULL);
}
if ( mark1->y < mark2->y ) {
startsel = (*mark1);
endsel = (*mark2);
++endsel.y;
} else {
startsel = (*mark2);
endsel = (*mark1);
++endsel.y;
}
} else if ( mark1->x < mark2->x ) {
startsel = (*mark1);
endsel = (*mark2);
} else if ( mark1->x > mark2->x ) {
startsel = (*mark2);
endsel = (*mark1);
}
getsel_video(win,buf,len, startsel.x, endsel.x, startsel.y, endsel.y);
clrsel_video(win);
vt_info("Region selected.");
reset_bar(1);
return(buf);
}
static void line_down(win, cursor)
window *win;
position *cursor;
{
int j;
if ( cursor->x < win->rows ) {
if ( marked ) {
for (j=cursor->y; j<win->cols; ++j) {
put_sel_char(win, cursor->x, j, &oldattr, &on, 0);
}
printf("\r");
vt_down(1);
++cursor->x;
for ( j=1; j<cursor->y; ++j ) {
put_sel_char(win, cursor->x, j, &oldattr, &on, 0);
}
} else {
vt_down(1);
++cursor->x;
}
}
}
static void line_up(win, cursor)
window *win;
position *cursor;
{
int j;
if ( cursor->x > 1 ) {
--cursor->x;
if ( marked ) {
vt_up(1);
for (j=cursor->y; j<win->cols; ++j) {
put_sel_char(win, cursor->x, j, &oldattr, &on, 0);
}
printf("\r");
vt_down(1);
++cursor->x;
for ( j=1; j<cursor->y; ++j ) {
put_sel_char(win, cursor->x, j, &oldattr, &on, 0);
}
vt_up(1);
--cursor->x;
} else
vt_up(1);
}
}
static void move_left(win, cursor)
window *win;
position *cursor;
{
if ( cursor->y > 1 ) {
if ( marked ) {
put_sel_char(win, cursor->x, cursor->y, &oldattr, &on, LEFT);
} else
vt_left(1);
--cursor->y;
}
}
static void move_right(win, cursor)
window *win;
position *cursor;
{
if ( cursor->y < win->cols ) {
if ( marked )
put_sel_char(win, cursor->x, cursor->y, &oldattr, &on, RIGHT);
else
vt_right(1);
++cursor->y;
}
}
static int use_xcb=0; /* Do we use xcb to access X selection buffers? */
void vt_initsel()
{
extern char *pathsearch(); /* From misc.c */
#ifdef USE_XCB
char *display;
/* Use xcb if we have both an X display and the command. */
/* xcb needs to support my hacked '-R' option. */
if ( (display=(char *)getenv("DISPLAY")) && pathsearch("xcb", 1) )
use_xcb=1;
else
#endif
use_xcb=0;
}
static char selbuf[BUFSIZ];
char *vt_getselbuf()
{
FILE *safe_popen(); /* From misc.c */
FILE *xcb;
char buffer[BUFSIZ];
int len;
if ( use_xcb ) {
if ( (xcb=safe_popen("xcb -S 0 && xcb -p 0", "r")) == NULL )
return(selbuf);
len=fread(buffer, sizeof(char), BUFSIZ-1, xcb);
(void) safe_pclose(xcb);
if ( len > 0 ) {
buffer[len]='\0';
strcpy(selbuf, buffer);
}
}
return(selbuf);
}
char *vt_setselbuf(buffer)
char *buffer;
{
FILE *safe_popen(); /* From misc.c */
FILE *xcb;
strncpy(selbuf, buffer, BUFSIZ-1);
selbuf[BUFSIZ-1]='\0';
if (use_xcb && (xcb=safe_popen("xcb -s 0; xcb -RT 0", "w")) != NULL) {
(void) fwrite(selbuf, sizeof(char), strlen(selbuf), xcb);
(void) safe_pclose(xcb);
}
return(selbuf);
}
/* Get a window selection */
char *vt_getsel(win, buf, len)
int win;
char *buf;
int len;
{
int c;
position here, cursor, mark1, mark2;
window *thiswin;
thiswin = physical.subwins[win];
here=cursor=thiswin->cursor;
marked=lastdirection=0;
vt_info("Mark beginning of selection: ");
while ( (c=getchar()) != EOF ) {
switch (c) {
case 'j': /* Move down one line */
line_down(thiswin, &cursor);
break;
case 'k': /* Move up one line */
line_up(thiswin, &cursor);
break;
case 'l': /* Move right one char */
move_right(thiswin, &cursor);
break;
case 'h': /* Move left one char */
move_left(thiswin, &cursor);
break;
case ' ': /* Mark selection */
if ( marked ) {
mark2=cursor;
/* Copy and deselect area */
buf=extract_sel(thiswin, buf,
len, &mark1, &mark2);
/* Repaint the screen */
paint_video(thiswin);
return(buf);
} else {
mark1=cursor;
oldattr = get_video(thiswin,
mark1.x, mark1.y);
on = (oldattr>>8);
marked=1;
vt_info(
"Mark end of selection: ");
/* Set reverse here */
vt_update();
}
break;
case '\033':
case 'q': /* Cancel selection */
clrsel_video(thiswin);
vt_goto((here.x+thiswin->row_offset),
here.y);
vt_info("Selection cancelled.");
sleep(1);
/* Repaint the screen */
paint_video(thiswin);
return(NULL);
break;
default: break;
}
}
return NULL; /* Hopefully, we never reach here */
}
/* Set a window selection */
char *vt_setsel(buf, len, startx, endx, starty, endy)
char *buf;
int len;
int startx, starty;
int endx, endy;
{
window *thiswin;
/* If nothing selected, return old selection */
if ( (startx == endx) && (starty == endy) )
return(buf);
if ( startx == (physical.subwins[LOWER])->row_offset ) {
/* Separator bar; return */
return(buf);
} else if ( startx < (physical.subwins[LOWER])->row_offset ) {
thiswin = physical.subwins[UPPER];
} else {
thiswin = physical.subwins[LOWER];
startx-=thiswin->row_offset;
endx-=thiswin->row_offset;
}
getsel_video(thiswin, buf, len, startx, endx, starty, endy);
return(buf);
}
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