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/*
* $Id: progressbox.c,v 1.4 2006/01/19 00:03:20 tom Exp $
*
* progressbox.c -- implements the progress box
*
* Copyright 2005 Valery Reznic
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to
* Free Software Foundation, Inc.
* 51 Franklin St., Fifth Floor
* Boston, MA 02110, USA.
*/
#include <dialog.h>
#include <dlg_keys.h>
#define MIN_HIGH (4)
#define MIN_WIDE (10 + 2 * (2 + MARGIN))
typedef struct {
DIALOG_CALLBACK obj;
WINDOW *text;
char line[MAX_LEN + 1];
int is_eof;
} MY_OBJ;
/*
* Return current line of text.
*/
static char *
get_line(MY_OBJ * obj)
{
FILE *fp = obj->obj.input;
int col = 0;
int j, tmpint, ch;
while (1) {
if ((ch = getc(fp)) == EOF) {
obj->is_eof = 1;
if (col) {
break;
} else {
return NULL;
}
}
if (ch == '\n')
break;
if (ch == '\r')
break;
if ((ch == TAB) && (dialog_vars.tab_correct)) {
tmpint = dialog_state.tab_len
- (col % dialog_state.tab_len);
for (j = 0; j < tmpint; j++) {
if (col < MAX_LEN)
obj->line[col] = ' ';
++col;
}
} else {
obj->line[col] = ch;
++col;
}
if (col >= MAX_LEN)
break;
}
obj->line[col] = '\0';
return obj->line;
}
/*
* Print a new line of text.
*/
static void
print_line(MY_OBJ * obj, WINDOW *win, int row, int width)
{
int i, y, x;
char *line = obj->line;
(void) wmove(win, row, 0); /* move cursor to correct line */
(void) waddch(win, ' ');
#ifdef NCURSES_VERSION
(void) waddnstr(win, line, MIN((int) strlen(line), width - 2));
#else
line[MIN((int) strlen(line), width - 2)] = '\0';
waddstr(win, line);
#endif
getyx(win, y, x);
/* Clear 'residue' of previous line */
for (i = 0; i < width - x; i++)
(void) waddch(win, ' ');
}
/*
* Display text from a stdin in a scrolling window.
*/
int
dialog_progressbox(const char *title, const char *cprompt, int height, int width)
{
int i;
int x, y, thigh;
WINDOW *dialog, *text;
MY_OBJ *obj;
FILE *fd = dialog_state.pipe_input;
char *prompt = dlg_strclone(cprompt);
dlg_tab_correct_str(prompt);
dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, MIN_WIDE);
dlg_print_size(height, width);
dlg_ctl_size(height, width);
x = dlg_box_x_ordinate(width);
y = dlg_box_y_ordinate(height);
thigh = height - (2 * MARGIN);
dialog = dlg_new_window(height, width, y, x);
dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
dlg_draw_title(dialog, title);
if (*prompt != '\0') {
int y2, x2;
wattrset(dialog, dialog_attr);
dlg_print_autowrap(dialog, prompt, height, width);
getyx(dialog, y2, x2);
++y2;
wmove(dialog, y2, MARGIN);
for (i = 0; i < getmaxx(dialog) - 2 * MARGIN; i++)
(void) waddch(dialog, ACS_HLINE);
y += y2;
thigh -= y2;
}
/* Create window for text region, used for scrolling text */
text = dlg_sub_window(dialog,
thigh,
width - (2 * MARGIN),
y + MARGIN,
x + MARGIN);
(void) wrefresh(dialog);
(void) wmove(dialog, thigh, (MARGIN + 1));
(void) wnoutrefresh(dialog);
obj = (MY_OBJ *) calloc(1, sizeof(MY_OBJ));
assert_ptr(obj, "dialog_progressbox");
obj->obj.input = fd;
obj->obj.win = dialog;
obj->text = text;
dlg_attr_clear(text, thigh, getmaxx(text), dialog_attr);
for (i = 0; get_line(obj); i++) {
if (i < thigh) {
print_line(obj, text, i, width - (2 * MARGIN));
} else {
scrollok(text, TRUE);
scroll(text);
scrollok(text, FALSE);
print_line(obj, text, thigh - 1, width - (2 * MARGIN));
}
(void) wnoutrefresh(text);
(void) wrefresh(text);
if (obj->is_eof)
break;
}
dlg_unregister_window(text);
dlg_del_window(dialog);
free(prompt);
return DLG_EXIT_OK;
}
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