| Current Path : /usr/src/gnu/lib/libodialog/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/gnu/lib/libodialog/msgbox.c |
/*
* msgbox.c -- implements the message box and info box
*
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
*
* 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
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/gnu/lib/libodialog/msgbox.c 114603 2003-05-03 21:31:08Z obrien $");
#include <dialog.h>
#include "dialog.priv.h"
/* local prototypes */
static int getnlines(unsigned char *buf);
static void print_page(WINDOW *win, int height, int width, unsigned char *buf, int startline, int hscroll);
static void print_perc(WINDOW *win, int y, int x, float p);
/*
* Display a message box. Program will pause and display an "OK" button
* if the parameter 'pause' is non-zero.
*/
int dialog_msgbox(unsigned char *title, unsigned char *prompt, int height, int width, int pause)
{
int i, j, x, y, key = 0;
WINDOW *dialog;
if (height < 0)
height = strheight(prompt)+2+2*(!!pause);
if (width < 0) {
i = strwidth(prompt);
j = ((title != NULL) ? strwidth(title) : 0);
width = MAX(i,j)+4;
}
if (pause)
width = MAX(width,10);
if (width > COLS)
width = COLS;
if (height > LINES)
height = LINES;
/* center dialog box on screen */
x = DialogX ? DialogX : (COLS - width)/2;
y = DialogY ? DialogY : (LINES - height)/2;
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
#endif
dialog = newwin(height, width, y, x);
if (dialog == NULL) {
endwin();
fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x);
exit(1);
}
keypad(dialog, TRUE);
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
if (title != NULL) {
wattrset(dialog, title_attr);
wmove(dialog, 0, (width - strlen(title))/2 - 1);
waddch(dialog, ' ');
waddstr(dialog, title);
waddch(dialog, ' ');
}
wattrset(dialog, dialog_attr);
wmove(dialog, 1, 2);
print_autowrap(dialog, prompt, height-1, width-2, width, 1, 2, TRUE, FALSE);
if (pause) {
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, ' ');
display_helpline(dialog, height-1, width);
print_button(dialog, " OK ", height-2, width/2-6, TRUE);
wrefresh(dialog);
while (key != ESC && key != '\n' && key != ' ' && key != '\r')
key = wgetch(dialog);
if (key == '\r')
key = '\n';
}
else {
key = '\n';
wrefresh(dialog);
}
delwin(dialog);
return (key == ESC ? -1 : 0);
}
/* End of dialog_msgbox() */
int
dialog_mesgbox(unsigned char *title, unsigned char *prompt, int height, int width)
/*
* Desc: basically the same as dialog_msgbox, but ... can use PGUP, PGDN and
* arrowkeys to move around the text and pause is always enabled
*/
{
int i, j, x, y, key=0;
int theight, startline, hscroll, max_lines;
WINDOW *dialog;
if (height < 0)
height = strheight(prompt)+2+2;
if (width < 0) {
i = strwidth(prompt);
j = ((title != NULL) ? strwidth(title) : 0);
width = MAX(i,j)+4;
}
width = MAX(width,10);
if (width > COLS)
width = COLS;
if (height > LINES)
height = LINES;
/* center dialog box on screen */
x = (COLS - width)/2;
y = (LINES - height)/2;
#ifdef HAVE_NCURSES
if (use_shadow)
draw_shadow(stdscr, y, x, height, width);
#endif
dialog = newwin(height, width, y, x);
if (dialog == NULL) {
endwin();
fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x);
exit(1);
}
keypad(dialog, TRUE);
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
if (title != NULL) {
wattrset(dialog, title_attr);
wmove(dialog, 0, (width - strlen(title))/2 - 1);
waddch(dialog, ' ');
waddstr(dialog, title);
waddch(dialog, ' ');
}
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, ' ');
display_helpline(dialog, height-1, width);
print_button(dialog, " OK ", height-2, width/2-6, TRUE);
wattrset(dialog, dialog_attr);
theight = height - 4;
startline = 0;
hscroll = 0;
max_lines = getnlines(prompt);
print_page(dialog, theight, width, prompt, startline, hscroll);
print_perc(dialog, height-3, width-9, (float) (startline+theight)/max_lines);
wmove(dialog, height-2, width/2-3);
wrefresh(dialog);
while ((key != ESC) && (key != '\n') && (key != '\r') && (key != ' ')) {
key = wgetch(dialog);
switch(key) {
case KEY_HOME:
startline=0;
hscroll=0;
break;
case KEY_END:
startline = max_lines - theight;
if (startline < 0) startline = 0;
break;
case '\020': /* ^P */
case KEY_UP:
if (startline > 0) startline--;
break;
case '\016': /* ^N */
case KEY_DOWN:
if (startline < max_lines - theight) startline++;
break;
case KEY_RIGHT:
hscroll+=5;
break;
case KEY_LEFT:
if (hscroll > 0) hscroll-=5;
if (hscroll < 0) hscroll =0;
break;
case KEY_PPAGE:
if (startline - height > 0) {
startline -= theight;
} else {
startline = 0;
}
break;
case KEY_NPAGE:
if (startline + theight < max_lines - theight) {
startline += theight;
} else {
startline = max_lines - theight;
if (startline < 0) startline = 0;
}
break;
case KEY_F(1):
case '?':
display_helpfile();
break;
}
print_page(dialog, theight, width, prompt, startline, hscroll);
print_perc(dialog, height-3, width-9, (float) (startline+theight)/max_lines);
wmove(dialog, height-2, width/2-3);
wrefresh(dialog);
}
delwin(dialog);
return (key == ESC ? -1 : 0);
} /* dialog_mesgbox() */
static void
print_perc(WINDOW *win, int y, int x, float p)
/*
* Desc: print p as a percentage at the coordinates (y,x)
*/
{
char ps[10];
if (p>1.0) p=1.0;
sprintf(ps, "(%3d%%)", (int) (p*100));
wmove(win, y, x);
waddstr(win, ps);
return;
} /* print_perc() */
static int
getnlines(unsigned char *buf)
/*
* Desc: count the # of lines in <buf>
*/
{
int i = 0;
if (*buf)
i++;
while (*buf) {
if (*buf == '\n' || *buf == '\r')
i++;
buf++;
}
return(i);
} /* getlines() */
unsigned char *
getline(unsigned char *buf, int n)
/*
* Desc: return a pointer to the n'th line in <buf> or NULL if its
* not there
*/
{
int i;
if (n<0) {
return(NULL);
}
i=0;
while (*buf && i<n) {
if (*buf == '\n' || *buf == '\r') {
i++;
}
buf++;
}
if (i<n) {
return(NULL);
} else {
return(buf);
}
} /* getline() */
static void
print_page(WINDOW *win, int height, int width, unsigned char *buf, int startline, int hscroll)
/*
* Desc: Print a page of text in the current window, starting at line <startline>
* with a <horizontal> scroll of hscroll from buffer <buf>
*/
{
int i, j;
unsigned char *b;
b = getline(buf, startline);
for (i=0; i<height; i++) {
/* clear line */
wmove(win, 1+i, 1);
for (j=0; j<width-2; j++) waddnstr(win, " ", 1);
wmove(win, 1+i, 1);
j = 0;
/* scroll to the right */
while (*b && (*b != '\n') && (*b != '\r') && (j<hscroll)) {
b++;
j++;
}
/* print new line */
j = 0;
while (*b && (*b != '\n') && (*b != '\r') && (j<width-2)) {
waddnstr(win, b, 1);
if (*b != '\t') { /* check for tabs */
j++;
} else {
j = ((int) (j+1)/8 + 1) * 8 - 1;
}
b++;
}
while (*b && (*b != '\n') && (*b != '\r')) b++;
if (*b) b++; /* skip over '\n', if it exists */
}
} /* print_page() */