void dialog_clear(void)
{
int lines, columns;
lines = getmaxy(stdscr);
columns = getmaxx(stdscr);
attr_clear(stdscr, lines, columns, dlg.screen.atr);
/* Display background title if it exists ... - SLH */
if (dlg.backtitle != NULL) {
int i, len = 0, skip = 0;
struct subtitle_list *pos;
wattrset(stdscr, dlg.screen.atr);
mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
/* 3 is for the arrow and spaces */
len += strlen(pos->text) + 3;
}
wmove(stdscr, 1, 1);
if (len > columns - 2) {
const char *ellipsis = "[...] ";
waddstr(stdscr, ellipsis);
skip = len - (columns - 2 - strlen(ellipsis));
}
for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
if (skip == 0)
waddch(stdscr, ACS_RARROW);
else
skip--;
if (skip == 0)
waddch(stdscr, ' ');
else
skip--;
if (skip < strlen(pos->text)) {
waddstr(stdscr, pos->text + skip);
skip = 0;
} else
skip -= strlen(pos->text);
if (skip == 0)
waddch(stdscr, ' ');
else
skip--;
}
for (i = len + 1; i < columns - 1; i++)
waddch(stdscr, ACS_HLINE);
}
wnoutrefresh(stdscr);
}
void dialog_clear (void)
{
attr_clear (stdscr, LINES, COLS, screen_attr);
/* Display background title if it exists ... - SLH */
if (backtitle != NULL) {
int i;
wattrset (stdscr, screen_attr);
mvwaddstr (stdscr, 0, 1, (char *)backtitle);
wmove (stdscr, 1, 1);
for (i = 1; i < COLS - 1; i++)
waddch (stdscr, ACS_HLINE);
}
wnoutrefresh (stdscr);
}
uint8 listdir(uint8 p, uint8 c, uint8 pg)
{
int i = pg * p;
uint8 j = 0;
int k = i;
int s = 0;
while(k--) while(data[s++] != 0);
attr_clear();
for(;j<pg;j++)
{
if (*(data+s) != 0)
printf("%03d. %-25s\n", i+j, data+s);
while(data[s++] != 0);
}
attr_set(1, 0x840+c*32, 32);
return pg;
}
void dialog_clear(void)
{
int lines, columns;
lines = getmaxy(stdscr);
columns = getmaxx(stdscr);
attr_clear(stdscr, lines, columns, dlg.screen.atr);
/* Display background title if it exists ... - SLH */
if (dlg.backtitle != NULL) {
int i;
wattrset(stdscr, dlg.screen.atr);
mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
wmove(stdscr, 1, 1);
for (i = 1; i < columns - 1; i++)
waddch(stdscr, ACS_HLINE);
}
wnoutrefresh(stdscr);
}
/*
* Display text from a file in a dialog box.
*/
int dialog_textbox(const char *title, const char *tbuf,
int initial_height, int initial_width)
{
int i, x, y, cur_x, cur_y, key = 0;
int height, width, boxh, boxw;
int passed_end;
WINDOW *dialog, *box;
begin_reached = 1;
end_reached = 0;
page_length = 0;
hscroll = 0;
buf = tbuf;
page = buf; /* page is pointer to start of page to be displayed */
do_resize:
getmaxyx(stdscr, height, width);
if (height < 8 || width < 8)
return -ERRDISPLAYTOOSMALL;
if (initial_height != 0)
height = initial_height;
else
if (height > 4)
height -= 4;
else
height = 0;
if (initial_width != 0)
width = initial_width;
else
if (width > 5)
width -= 5;
else
width = 0;
/* center dialog box on screen */
x = (COLS - width) / 2;
y = (LINES - height) / 2;
draw_shadow(stdscr, y, x, height, width);
dialog = newwin(height, width, y, x);
keypad(dialog, TRUE);
/* Create window for box region, used for scrolling text */
boxh = height - 4;
boxw = width - 2;
box = subwin(dialog, boxh, boxw, y + 1, x + 1);
wattrset(box, dlg.dialog.atr);
wbkgdset(box, dlg.dialog.atr & A_COLOR);
keypad(box, TRUE);
/* register the new window, along with its borders */
draw_box(dialog, 0, 0, height, width,
dlg.dialog.atr, dlg.border.atr);
wattrset(dialog, dlg.border.atr);
mvwaddch(dialog, height - 3, 0, ACS_LTEE);
for (i = 0; i < width - 2; i++)
waddch(dialog, ACS_HLINE);
wattrset(dialog, dlg.dialog.atr);
wbkgdset(dialog, dlg.dialog.atr & A_COLOR);
waddch(dialog, ACS_RTEE);
print_title(dialog, title, width);
print_button(dialog, gettext(" Exit "), height - 2, width / 2 - 4, TRUE);
wnoutrefresh(dialog);
getyx(dialog, cur_y, cur_x); /* Save cursor position */
/* Print first page of text */
attr_clear(box, boxh, boxw, dlg.dialog.atr);
refresh_text_box(dialog, box, boxh, boxw, cur_y, cur_x);
while ((key != KEY_ESC) && (key != '\n')) {
key = wgetch(dialog);
switch (key) {
case 'E': /* Exit */
case 'e':
case 'X':
case 'x':
case 'q':
delwin(box);
delwin(dialog);
return 0;
case 'g': /* First page */
case KEY_HOME:
if (!begin_reached) {
begin_reached = 1;
page = buf;
refresh_text_box(dialog, box, boxh, boxw,
cur_y, cur_x);
}
break;
case 'G': /* Last page */
case KEY_END:
end_reached = 1;
/* point to last char in buf */
page = buf + strlen(buf);
back_lines(boxh);
refresh_text_box(dialog, box, boxh, boxw,
cur_y, cur_x);
break;
case 'K': /* Previous line */
case 'k':
case KEY_UP:
if (!begin_reached) {
back_lines(page_length + 1);
/* We don't call print_page() here but use
* scrolling to ensure faster screen update.
* However, 'end_reached' and 'page_length'
* should still be updated, and 'page' should
* point to start of next page. This is done
* by calling get_line() in the following
* 'for' loop. */
scrollok(box, TRUE);
wscrl(box, -1); /* Scroll box region down one line */
scrollok(box, FALSE);
page_length = 0;
passed_end = 0;
for (i = 0; i < boxh; i++) {
if (!i) {
/* print first line of page */
print_line(box, 0, boxw);
wnoutrefresh(box);
} else
/* Called to update 'end_reached' and 'page' */
get_line();
if (!passed_end)
page_length++;
if (end_reached && !passed_end)
passed_end = 1;
}
print_position(dialog);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
break;
case 'B': /* Previous page */
case 'b':
case 'u':
case KEY_PPAGE:
if (begin_reached)
break;
back_lines(page_length + boxh);
refresh_text_box(dialog, box, boxh, boxw,
cur_y, cur_x);
break;
case 'J': /* Next line */
case 'j':
case KEY_DOWN:
if (!end_reached) {
begin_reached = 0;
scrollok(box, TRUE);
scroll(box); /* Scroll box region up one line */
scrollok(box, FALSE);
print_line(box, boxh - 1, boxw);
wnoutrefresh(box);
print_position(dialog);
wmove(dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh(dialog);
}
break;
case KEY_NPAGE: /* Next page */
case ' ':
case 'd':
if (end_reached)
break;
begin_reached = 0;
refresh_text_box(dialog, box, boxh, boxw,
cur_y, cur_x);
break;
case '0': /* Beginning of line */
case 'H': /* Scroll left */
case 'h':
case KEY_LEFT:
if (hscroll <= 0)
break;
if (key == '0')
hscroll = 0;
else
hscroll--;
/* Reprint current page to scroll horizontally */
back_lines(page_length);
refresh_text_box(dialog, box, boxh, boxw,
cur_y, cur_x);
break;
case 'L': /* Scroll right */
case 'l':
case KEY_RIGHT:
if (hscroll >= MAX_LEN)
break;
hscroll++;
/* Reprint current page to scroll horizontally */
back_lines(page_length);
refresh_text_box(dialog, box, boxh, boxw,
cur_y, cur_x);
break;
case KEY_ESC:
key = on_key_esc(dialog);
break;
case KEY_RESIZE:
back_lines(height);
delwin(box);
delwin(dialog);
on_key_resize();
goto do_resize;
}
}
delwin(box);
delwin(dialog);
return key; /* ESC pressed */
}
/*
* Display text from a file in a dialog box.
*/
int
dialog_textbox (const char *title, const char *file, int height, int width)
{
int i, x, y, cur_x, cur_y, fpos, key = 0, dir, temp, temp1;
#ifdef HAVE_LIBNCURSES
int passed_end;
#endif
char search_term[MAX_LEN + 1], *tempptr, *found;
WINDOW *dialog, *text;
search_term[0] = '\0'; /* no search term entered yet */
/* Open input file for reading */
if ((fd = open (file, O_RDONLY)) == -1) {
endwin ();
fprintf (stderr,
"\nCan't open input file in dialog_textbox().\n");
exit (-1);
}
/* Get file size. Actually, 'file_size' is the real file size - 1,
since it's only the last byte offset from the beginning */
if ((file_size = lseek (fd, 0, SEEK_END)) == -1) {
endwin ();
fprintf (stderr, "\nError getting file size in dialog_textbox().\n");
exit (-1);
}
/* Restore file pointer to beginning of file after getting file size */
if (lseek (fd, 0, SEEK_SET) == -1) {
endwin ();
fprintf (stderr, "\nError moving file pointer in dialog_textbox().\n");
exit (-1);
}
/* Allocate space for read buffer */
if ((buf = malloc (BUF_SIZE + 1)) == NULL) {
endwin ();
fprintf (stderr, "\nCan't allocate memory in dialog_textbox().\n");
exit (-1);
}
if ((bytes_read = read (fd, buf, BUF_SIZE)) == -1) {
endwin ();
fprintf (stderr, "\nError reading file in dialog_textbox().\n");
exit (-1);
}
buf[bytes_read] = '\0'; /* mark end of valid data */
page = buf; /* page is pointer to start of page to be displayed */
/* center dialog box on screen */
x = (COLS - width) / 2;
y = (LINES - height) / 2;
#ifdef HAVE_LIBNCURSES
if (use_shadow)
draw_shadow (stdscr, y, x, height, width);
#endif
dialog = newwin (height, width, y, x);
mouse_setbase (x, y);
keypad (dialog, TRUE);
/* Create window for text region, used for scrolling text */
text = subwin (dialog, height - 4, width - 2, y + 1, x + 1);
keypad (text, TRUE);
/* register the new window, along with its borders */
mouse_mkbigregion (0, 0, height - 2, width, 1, 0, 2 /* not normal */ );
draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);
wattrset (dialog, border_attr);
wmove (dialog, height - 3, 0);
waddch (dialog, ACS_LTEE);
for (i = 0; i < width - 2; i++)
waddch (dialog, ACS_HLINE);
wattrset (dialog, dialog_attr);
waddch (dialog, ACS_RTEE);
wmove (dialog, height - 2, 1);
for (i = 0; i < width - 2; i++)
waddch (dialog, ' ');
if (title != NULL) {
wattrset (dialog, title_attr);
wmove (dialog, 0, (width - strlen (title)) / 2 - 1);
waddch (dialog, ' ');
waddstr (dialog, title);
waddch (dialog, ' ');
}
print_button (dialog, " EXIT ", height - 2, width / 2 - 4, TRUE);
wnoutrefresh (dialog);
getyx (dialog, cur_y, cur_x); /* Save cursor position */
/* Print first page of text */
attr_clear (text, height - 4, width - 2, dialog_attr);
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
while ((key != ESC) && (key != '\n')) {
key = mouse_wgetch (dialog);
switch (key) {
case M_EVENT + 'E':
case 'E': /* Exit */
case 'e':
delwin (dialog);
free (buf);
close (fd);
return 0;
case 'g': /* First page */
case KEY_HOME:
if (!begin_reached) {
begin_reached = 1;
/* First page not in buffer? */
if ((fpos = lseek (fd, 0, SEEK_CUR)) == -1) {
endwin ();
fprintf (stderr,
"\nError moving file pointer in dialog_textbox().\n");
exit (-1);
}
if (fpos > bytes_read) { /* Yes, we have to read it in */
if (lseek (fd, 0, SEEK_SET) == -1) {
endwin ();
fprintf (stderr, "\nError moving file pointer in "
"dialog_textbox().\n");
exit (-1);
}
if ((bytes_read = read (fd, buf, BUF_SIZE)) == -1) {
endwin ();
fprintf (stderr,
"\nError reading file in dialog_textbox().\n");
exit (-1);
}
buf[bytes_read] = '\0';
}
page = buf;
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
}
break;
case 'G': /* Last page */
#ifdef HAVE_LIBNCURSES
case KEY_END:
#endif
end_reached = 1;
/* Last page not in buffer? */
if ((fpos = lseek (fd, 0, SEEK_CUR)) == -1) {
endwin ();
fprintf (stderr,
"\nError moving file pointer in dialog_textbox().\n");
exit (-1);
}
if (fpos < file_size) { /* Yes, we have to read it in */
if (lseek (fd, -BUF_SIZE, SEEK_END) == -1) {
endwin ();
fprintf (stderr,
"\nError moving file pointer in dialog_textbox().\n");
exit (-1);
}
if ((bytes_read = read (fd, buf, BUF_SIZE)) == -1) {
endwin ();
fprintf (stderr,
"\nError reading file in dialog_textbox().\n");
exit (-1);
}
buf[bytes_read] = '\0';
}
page = buf + bytes_read;
back_lines (height - 4);
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
break;
case 'K': /* Previous line */
case 'k':
case KEY_UP:
if (!begin_reached) {
back_lines (page_length + 1);
#ifdef HAVE_LIBNCURSES
/* We don't call print_page() here but use scrolling to ensure
faster screen update. However, 'end_reached' and
'page_length' should still be updated, and 'page' should
point to start of next page. This is done by calling
get_line() in the following 'for' loop. */
scrollok (text, TRUE);
wscrl (text, -1); /* Scroll text region down one line */
scrollok (text, FALSE);
page_length = 0;
passed_end = 0;
for (i = 0; i < height - 4; i++) {
if (!i) {
/* print first line of page */
print_line (text, 0, width - 2);
wnoutrefresh (text);
} else
/* Called to update 'end_reached' and 'page' */
get_line ();
if (!passed_end)
page_length++;
if (end_reached && !passed_end)
passed_end = 1;
}
#else
print_page (text, height - 4, width - 2);
#endif
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
}
break;
case 'B': /* Previous page */
case 'b':
case KEY_PPAGE:
if (begin_reached)
break;
back_lines (page_length + height - 4);
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x);
wrefresh (dialog);
break;
case 'J': /* Next line */
case 'j':
case KEY_DOWN:
if (!end_reached) {
begin_reached = 0;
scrollok (text, TRUE);
scroll (text); /* Scroll text region up one line */
scrollok (text, FALSE);
print_line (text, height - 5, width - 2);
#ifndef HAVE_LIBNCURSES
wmove (text, height - 5, 0);
waddch (text, ' ');
wmove (text, height - 5, width - 3);
waddch (text, ' ');
#endif
wnoutrefresh (text);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
}
break;
case ' ': /* Next page */
case KEY_NPAGE:
if (end_reached)
break;
begin_reached = 0;
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x);
wrefresh (dialog);
break;
case '0': /* Beginning of line */
case 'H': /* Scroll left */
case 'h':
case KEY_LEFT:
if (hscroll <= 0)
break;
if (key == '0')
hscroll = 0;
else
hscroll--;
/* Reprint current page to scroll horizontally */
back_lines (page_length);
print_page (text, height - 4, width - 2);
wmove (dialog, cur_y, cur_x);
wrefresh (dialog);
break;
case 'L': /* Scroll right */
case 'l':
case KEY_RIGHT:
if (hscroll >= MAX_LEN)
break;
hscroll++;
/* Reprint current page to scroll horizontally */
back_lines (page_length);
print_page (text, height - 4, width - 2);
wmove (dialog, cur_y, cur_x);
wrefresh (dialog);
break;
case '/': /* Forward search */
case 'n': /* Repeat forward search */
case '?': /* Backward search */
case 'N': /* Repeat backward search */
/* set search direction */
dir = (key == '/' || key == 'n') ? 1 : 0;
if (dir ? !end_reached : !begin_reached) {
if (key == 'n' || key == 'N') {
if (search_term[0] == '\0') { /* No search term yet */
fprintf (stderr, "\a"); /* beep */
break;
}
} else
/* Get search term from user */
if (get_search_term (text, search_term, height - 4,
width - 2) == -1) {
/* ESC pressed in get_search_term().
Reprint page to clear box */
wattrset (text, dialog_attr);
back_lines (page_length);
print_page (text, height - 4, width - 2);
wmove (dialog, cur_y, cur_x);
wrefresh (dialog);
break;
}
/* Save variables for restoring in case search term
can't be found */
tempptr = page;
temp = begin_reached;
temp1 = end_reached;
if ((fpos = lseek (fd, 0, SEEK_CUR)) == -1) {
endwin ();
fprintf (stderr, "\nError moving file pointer in "
"dialog_textbox().\n");
exit (-1);
}
fpos -= bytes_read;
/* update 'page' to point to next (previous) line before
forward (backward) searching */
back_lines (dir ? page_length - 1 : page_length + 1);
found = NULL;
if (dir) /* Forward search */
while ((found = strstr (get_line (), search_term))
== NULL) {
if (end_reached)
break;
} else /* Backward search */
while ((found = strstr (get_line (), search_term))
== NULL) {
if (begin_reached)
break;
back_lines (2);
}
if (found == NULL) { /* not found */
fprintf (stderr, "\a"); /* beep */
/* Restore program state to that before searching */
if (lseek (fd, fpos, SEEK_SET) == -1) {
endwin ();
fprintf (stderr, "\nError moving file pointer in "
"dialog_textbox().\n");
exit (-1);
}
if ((bytes_read = read (fd, buf, BUF_SIZE)) == -1) {
endwin ();
fprintf (stderr, "\nError reading file in "
"dialog_textbox().\n");
exit (-1);
}
buf[bytes_read] = '\0';
page = tempptr;
begin_reached = temp;
end_reached = temp1;
/* move 'page' to point to start of current page in order to
re-print current page. Note that 'page' always points to
start of next page, so this is necessary */
back_lines (page_length);
} else /* Search term found */
back_lines (1);
/* Reprint page */
wattrset (text, dialog_attr);
print_page (text, height - 4, width - 2);
if (found != NULL)
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
} else /* no need to find */
fprintf (stderr, "\a"); /* beep */
break;
case ESC:
break;
}
}
delwin (dialog);
free (buf);
close (fd);
return -1; /* ESC pressed */
}
int
dialog_textyesno (const char *title, const char *file, int height, int width)
{
int i, x, y, cur_x, cur_y, fpos, key = 0, button = 0;
int passed_end;
char search_term[MAX_LEN + 1];
WINDOW *dialog, *text;
search_term[0] = '\0'; /* no search term entered yet */
/* Open input file for reading */
if ((fd = open (file, O_RDONLY)) == -1) {
endwin ();
fprintf (stderr,
"\nCan't open input file in dialog_textbox().\n");
exit (-1);
}
/* Get file size. Actually, 'file_size' is the real file size - 1,
since it's only the last byte offset from the beginning */
if ((file_size = lseek (fd, 0, SEEK_END)) == -1) {
endwin ();
fprintf (stderr, "\nError getting file size in dialog_textbox().\n");
exit (-1);
}
/* Restore file pointer to beginning of file after getting file size */
if (lseek (fd, 0, SEEK_SET) == -1) {
endwin ();
fprintf (stderr, "\nError moving file pointer in dialog_textbox().\n");
exit (-1);
}
/* Allocate space for read buffer */
if ((buf = malloc (BUF_SIZE + 1)) == NULL) {
endwin ();
fprintf (stderr, "\nCan't allocate memory in dialog_textbox().\n");
exit (-1);
}
if ((bytes_read = read (fd, buf, BUF_SIZE)) == -1) {
endwin ();
fprintf (stderr, "\nError reading file in dialog_textbox().\n");
exit (-1);
}
buf[bytes_read] = '\0'; /* mark end of valid data */
page = buf; /* page is pointer to start of page to be displayed */
/* center dialog box on screen */
x = (COLS - width) / 2;
y = (LINES - height) / 2;
draw_shadow (stdscr, y, x, height, width);
dialog = newwin (height, width, y, x);
keypad (dialog, TRUE);
/* Create window for text region, used for scrolling text */
text = subwin (dialog, height - 4, width - 2, y + 1, x + 1);
wattrset (text, dialog_attr);
wbkgdset (text, dialog_attr & A_COLOR);
keypad (text, TRUE);
/* register the new window, along with its borders */
draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);
wattrset (dialog, border_attr);
mvwaddch (dialog, height-3, 0, ACS_LTEE);
for (i = 0; i < width - 2; i++)
waddch (dialog, ACS_HLINE);
wattrset (dialog, dialog_attr);
wbkgdset (dialog, dialog_attr & A_COLOR);
waddch (dialog, ACS_RTEE);
if (title != NULL && strlen(title) >= width-2 ) {
/* truncate long title -- mec */
char * title2 = malloc(width-2+1);
memcpy( title2, title, width-2 );
title2[width-2] = '\0';
title = title2;
}
if (title != NULL) {
wattrset (dialog, title_attr);
mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');
waddstr (dialog, (char *)title);
waddch (dialog, ' ');
}
//Nenad instered this
print_buttons(dialog, height, width, 0);
wnoutrefresh (dialog);
getyx (dialog, cur_y, cur_x); /* Save cursor position */
/* Print first page of text */
attr_clear (text, height - 4, width - 2, dialog_attr);
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
while ((key != ESC) && (key != '\n')) {
key = wgetch (dialog);
switch (key) {
case 'Y': /* Exit */
case 'y':
delwin (dialog);
free (buf);
close (fd);
return 0;
case 'N':
case 'n':
delwin (dialog);
free (buf);
close (fd);
return 1;
case 'g': /* First page */
case KEY_HOME:
if (!begin_reached) {
begin_reached = 1;
/* First page not in buffer? */
if ((fpos = lseek (fd, 0, SEEK_CUR)) == -1) {
endwin ();
fprintf (stderr,
"\nError moving file pointer in dialog_textbox().\n");
exit (-1);
}
if (fpos > bytes_read) { /* Yes, we have to read it in */
if (lseek (fd, 0, SEEK_SET) == -1) {
endwin ();
fprintf (stderr, "\nError moving file pointer in "
"dialog_textbox().\n");
exit (-1);
}
if ((bytes_read = read (fd, buf, BUF_SIZE)) == -1) {
endwin ();
fprintf (stderr,
"\nError reading file in dialog_textbox().\n");
exit (-1);
}
buf[bytes_read] = '\0';
}
page = buf;
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
}
break;
case 'G': /* Last page */
case KEY_END:
end_reached = 1;
/* Last page not in buffer? */
if ((fpos = lseek (fd, 0, SEEK_CUR)) == -1) {
endwin ();
fprintf (stderr,
"\nError moving file pointer in dialog_textbox().\n");
exit (-1);
}
if (fpos < file_size) { /* Yes, we have to read it in */
if (lseek (fd, -BUF_SIZE, SEEK_END) == -1) {
endwin ();
fprintf (stderr,
"\nError moving file pointer in dialog_textbox().\n");
exit (-1);
}
if ((bytes_read = read (fd, buf, BUF_SIZE)) == -1) {
endwin ();
fprintf (stderr,
"\nError reading file in dialog_textbox().\n");
exit (-1);
}
buf[bytes_read] = '\0';
}
page = buf + bytes_read;
back_lines (height - 4);
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
break;
case 'K': /* Previous line */
case 'k':
case KEY_UP:
if (!begin_reached) {
back_lines (page_length + 1);
/* We don't call print_page() here but use scrolling to ensure
faster screen update. However, 'end_reached' and
'page_length' should still be updated, and 'page' should
point to start of next page. This is done by calling
get_line() in the following 'for' loop. */
scrollok (text, TRUE);
wscrl (text, -1); /* Scroll text region down one line */
scrollok (text, FALSE);
page_length = 0;
passed_end = 0;
for (i = 0; i < height - 4; i++) {
if (!i) {
/* print first line of page */
print_line (text, 0, width - 2);
wnoutrefresh (text);
} else
/* Called to update 'end_reached' and 'page' */
get_line ();
if (!passed_end)
page_length++;
if (end_reached && !passed_end)
passed_end = 1;
}
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
}
break;
case 'B': /* Previous page */
case 'b':
case KEY_PPAGE:
if (begin_reached)
break;
back_lines (page_length + height - 4);
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x);
wrefresh (dialog);
break;
case 'J': /* Next line */
case 'j':
case KEY_DOWN:
if (!end_reached) {
begin_reached = 0;
scrollok (text, TRUE);
scroll (text); /* Scroll text region up one line */
scrollok (text, FALSE);
print_line (text, height - 5, width - 2);
wnoutrefresh (text);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x); /* Restore cursor position */
wrefresh (dialog);
}
break;
case KEY_NPAGE: /* Next page */
if (end_reached)
break;
begin_reached = 0;
print_page (text, height - 4, width - 2);
print_position (dialog, height, width);
wmove (dialog, cur_y, cur_x);
wrefresh (dialog);
break;
case TAB:
case KEY_LEFT:
case KEY_RIGHT:
button = ((key == KEY_LEFT ? --button : ++button) < 0)
? 1 : (button > 1 ? 0 : button);
print_buttons(dialog, height, width, button);
wrefresh (dialog);
break;
case ' ':
case '\n':
delwin (dialog);
free (buf);
close (fd);
return button;
case ESC:
break;
}
}
delwin (dialog);
free (buf);
close (fd);
return -1; /* ESC pressed */
}
