316 lines
7.2 KiB
C
316 lines
7.2 KiB
C
/*
|
|
* $Id: guage.c,v 1.52 2011/01/17 10:39:28 tom Exp $
|
|
*
|
|
* guage.c -- implements the gauge dialog
|
|
*
|
|
* Copyright 2000-2010,2011 Thomas E. Dickey
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License, version 2.1
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* 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.
|
|
*
|
|
* An earlier version of this program lists as authors
|
|
* Marc Ewing, Red Hat Software
|
|
*/
|
|
|
|
#include <dialog.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#define MY_LEN (MAX_LEN)/2
|
|
|
|
#define MIN_HIGH (4)
|
|
#define MIN_WIDE (10 + 2 * (2 + MARGIN))
|
|
|
|
#define isMarker(buf) !strncmp(buf, "XXX", (size_t) 3)
|
|
|
|
typedef struct {
|
|
DIALOG_CALLBACK obj;
|
|
WINDOW *text;
|
|
const char *title;
|
|
char *prompt;
|
|
char prompt_buf[MY_LEN];
|
|
int percent;
|
|
int height;
|
|
int width;
|
|
char line[MAX_LEN + 1];
|
|
} MY_OBJ;
|
|
|
|
static int
|
|
read_data(char *buffer, FILE *fp)
|
|
{
|
|
int result;
|
|
|
|
if (feof(fp)) {
|
|
result = 0;
|
|
} else if (fgets(buffer, MY_LEN, fp) != 0) {
|
|
dlg_trim_string(buffer);
|
|
result = 1;
|
|
} else {
|
|
result = -1;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
decode_percent(char *buffer)
|
|
{
|
|
char *tmp = 0;
|
|
long value = strtol(buffer, &tmp, 10);
|
|
|
|
if (tmp != 0 && (*tmp == 0 || isspace(UCH(*tmp))) && value >= 0) {
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
repaint_text(MY_OBJ * obj)
|
|
{
|
|
WINDOW *dialog = obj->obj.win;
|
|
int i, x;
|
|
|
|
if (dialog != 0 && obj->obj.input != 0) {
|
|
(void) werase(dialog);
|
|
dlg_draw_box(dialog, 0, 0, obj->height, obj->width, dialog_attr, border_attr);
|
|
|
|
dlg_draw_title(dialog, obj->title);
|
|
|
|
wattrset(dialog, dialog_attr);
|
|
dlg_print_autowrap(dialog, obj->prompt, obj->height, obj->width);
|
|
|
|
dlg_draw_box(dialog,
|
|
obj->height - 4, 2 + MARGIN,
|
|
2 + MARGIN, obj->width - 2 * (2 + MARGIN),
|
|
dialog_attr,
|
|
border_attr);
|
|
|
|
/*
|
|
* Clear the area for the progress bar by filling it with spaces
|
|
* in the title-attribute, and write the percentage with that
|
|
* attribute.
|
|
*/
|
|
(void) wmove(dialog, obj->height - 3, 4);
|
|
wattrset(dialog, gauge_attr);
|
|
|
|
for (i = 0; i < (obj->width - 2 * (3 + MARGIN)); i++)
|
|
(void) waddch(dialog, ' ');
|
|
|
|
(void) wmove(dialog, obj->height - 3, (obj->width / 2) - 2);
|
|
(void) wprintw(dialog, "%3d%%", obj->percent);
|
|
|
|
/*
|
|
* Now draw a bar in reverse, relative to the background.
|
|
* The window attribute was useful for painting the background,
|
|
* but requires some tweaks to reverse it.
|
|
*/
|
|
x = (obj->percent * (obj->width - 2 * (3 + MARGIN))) / 100;
|
|
if ((title_attr & A_REVERSE) != 0) {
|
|
wattroff(dialog, A_REVERSE);
|
|
} else {
|
|
wattrset(dialog, A_REVERSE);
|
|
}
|
|
(void) wmove(dialog, obj->height - 3, 4);
|
|
for (i = 0; i < x; i++) {
|
|
chtype ch2 = winch(dialog);
|
|
if (title_attr & A_REVERSE) {
|
|
ch2 &= ~A_REVERSE;
|
|
}
|
|
(void) waddch(dialog, ch2);
|
|
}
|
|
|
|
(void) wrefresh(dialog);
|
|
}
|
|
}
|
|
|
|
static bool
|
|
handle_input(DIALOG_CALLBACK * cb)
|
|
{
|
|
MY_OBJ *obj = (MY_OBJ *) cb;
|
|
bool result;
|
|
int status;
|
|
char buf[MY_LEN];
|
|
|
|
if (dialog_state.pipe_input == 0) {
|
|
status = -1;
|
|
} else if ((status = read_data(buf, dialog_state.pipe_input)) > 0) {
|
|
|
|
if (isMarker(buf)) {
|
|
/*
|
|
* Historically, next line should be percentage, but one of the
|
|
* worse-written clones of 'dialog' assumes the number is missing.
|
|
* (Gresham's Law applied to software).
|
|
*/
|
|
if ((status = read_data(buf, dialog_state.pipe_input)) > 0) {
|
|
|
|
obj->prompt_buf[0] = '\0';
|
|
if (decode_percent(buf))
|
|
obj->percent = atoi(buf);
|
|
else
|
|
strcpy(obj->prompt_buf, buf);
|
|
|
|
/* Rest is message text */
|
|
while ((status = read_data(buf, dialog_state.pipe_input)) > 0
|
|
&& !isMarker(buf)) {
|
|
if (strlen(obj->prompt_buf) + strlen(buf) <
|
|
sizeof(obj->prompt_buf) - 1) {
|
|
strcat(obj->prompt_buf, buf);
|
|
}
|
|
}
|
|
|
|
if (obj->prompt != obj->prompt_buf)
|
|
free(obj->prompt);
|
|
obj->prompt = obj->prompt_buf;
|
|
}
|
|
} else if (decode_percent(buf)) {
|
|
obj->percent = atoi(buf);
|
|
}
|
|
} else {
|
|
if (feof(dialog_state.pipe_input) ||
|
|
(ferror(dialog_state.pipe_input) && errno != EINTR)) {
|
|
dlg_remove_callback(cb);
|
|
}
|
|
}
|
|
|
|
if (status > 0) {
|
|
result = TRUE;
|
|
repaint_text(obj);
|
|
} else {
|
|
result = FALSE;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static bool
|
|
handle_my_getc(DIALOG_CALLBACK * cb, int ch, int fkey, int *result)
|
|
{
|
|
int status = TRUE;
|
|
|
|
*result = DLG_EXIT_OK;
|
|
if (cb != 0) {
|
|
if (!fkey && (ch == ERR)) {
|
|
(void) handle_input(cb);
|
|
status = (cb->input != 0);
|
|
}
|
|
} else {
|
|
status = FALSE;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
static void
|
|
my_cleanup(DIALOG_CALLBACK * cb)
|
|
{
|
|
MY_OBJ *obj = (MY_OBJ *) cb;
|
|
|
|
if (obj != 0) {
|
|
if (obj->prompt != obj->prompt_buf)
|
|
free(obj->prompt);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Display a gauge, or progress meter. Starts at percent% and reads stdin. If
|
|
* stdin is not XXX, then it is interpreted as a percentage, and the display is
|
|
* updated accordingly. Otherwise the next line is the percentage, and
|
|
* subsequent lines up to another XXX are used for the new prompt. Note that
|
|
* the size of the window never changes, so the prompt can not get any larger
|
|
* than the height and width specified.
|
|
*/
|
|
int
|
|
dialog_gauge(const char *title,
|
|
const char *cprompt,
|
|
int height,
|
|
int width,
|
|
int percent)
|
|
{
|
|
#ifdef KEY_RESIZE
|
|
int old_height = height;
|
|
int old_width = width;
|
|
#endif
|
|
int fkey;
|
|
int ch, result;
|
|
int x, y;
|
|
char *prompt = dlg_strclone(cprompt);
|
|
WINDOW *dialog;
|
|
MY_OBJ *obj = 0;
|
|
|
|
curs_set(0);
|
|
|
|
dlg_tab_correct_str(prompt);
|
|
|
|
#ifdef KEY_RESIZE
|
|
retry:
|
|
#endif
|
|
|
|
dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, MIN_WIDE);
|
|
dlg_print_size(height, width);
|
|
dlg_ctl_size(height, width);
|
|
|
|
/* center dialog box on screen */
|
|
x = dlg_box_x_ordinate(width);
|
|
y = dlg_box_y_ordinate(height);
|
|
|
|
dialog = dlg_new_window(height, width, y, x);
|
|
|
|
if (obj == 0) {
|
|
MY_OBJ **objref;
|
|
|
|
obj = dlg_calloc(MY_OBJ, 1);
|
|
assert_ptr(obj, "dialog_gauge");
|
|
|
|
objref = &obj;
|
|
obj->obj.input = dialog_state.pipe_input;
|
|
obj->obj.win = dialog;
|
|
obj->obj.keep_win = TRUE;
|
|
obj->obj.bg_task = TRUE;
|
|
obj->obj.handle_getc = handle_my_getc;
|
|
obj->obj.handle_input = handle_input;
|
|
obj->title = title;
|
|
obj->prompt = prompt;
|
|
obj->percent = percent;
|
|
obj->height = height;
|
|
obj->width = width;
|
|
dlg_add_callback_ref((DIALOG_CALLBACK **) objref, my_cleanup);
|
|
} else {
|
|
obj->obj.win = dialog;
|
|
}
|
|
|
|
repaint_text(obj);
|
|
|
|
do {
|
|
ch = dlg_getc(dialog, &fkey);
|
|
#ifdef KEY_RESIZE
|
|
if (fkey && ch == KEY_RESIZE) {
|
|
/* reset data */
|
|
height = old_height;
|
|
width = old_width;
|
|
/* repaint */
|
|
dlg_clear();
|
|
dlg_del_window(dialog);
|
|
refresh();
|
|
dlg_mouse_free_regions();
|
|
goto retry;
|
|
}
|
|
#endif
|
|
}
|
|
while (handle_my_getc(&(obj->obj), ch, fkey, &result));
|
|
|
|
curs_set(1);
|
|
dlg_del_window(dialog);
|
|
|
|
return (DLG_EXIT_OK);
|
|
}
|