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freebsd/contrib/dialog/calendar.c
Baptiste Daroussin 2a3e3873a1 Update dialog to 1.2-20130523 
Level up WARNS
2013-06-17 10:28:55 +00:00

688 lines
16 KiB
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/*
* $Id: calendar.c,v 1.67 2013/03/17 15:03:41 tom Exp $
*
* calendar.c -- implements the calendar box
*
* Copyright 2001-2012,2013 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.
*/
#include <dialog.h>
#include <dlg_keys.h>
#include <time.h>
#define ONE_DAY (60 * 60 * 24)
#define MON_WIDE 4 /* width of a month-name */
#define DAY_HIGH 6 /* maximum lines in day-grid */
#define DAY_WIDE (8 * MON_WIDE) /* width of the day-grid */
#define HDR_HIGH 1 /* height of cells with month/year */
#define BTN_HIGH 1 /* height of button-row excluding margin */
/* two more lines: titles for day-of-week and month/year boxes */
#define MIN_HIGH (DAY_HIGH + 2 + HDR_HIGH + BTN_HIGH + (7 * MARGIN))
#define MIN_WIDE (DAY_WIDE + (4 * MARGIN))
typedef enum {
sMONTH = -3
,sYEAR = -2
,sDAY = -1
} STATES;
struct _box;
typedef int (*BOX_DRAW) (struct _box *, struct tm *);
typedef struct _box {
WINDOW *parent;
WINDOW *window;
int x;
int y;
int width;
int height;
BOX_DRAW box_draw;
} BOX;
static const char *
nameOfDayOfWeek(int n)
{
static const char *table[7]
#ifndef ENABLE_NLS
=
{
"Sunday",
"Monday",
"Tuesday",
"Wednesday",
"Thursday",
"Friday",
"Saturday"
}
#endif
;
const char *result = 0;
if (n >= 0 && n < 7) {
#ifdef ENABLE_NLS
if (table[n] == 0) {
nl_item items[7] =
{
ABDAY_1, ABDAY_2, ABDAY_3, ABDAY_4, ABDAY_5, ABDAY_6, ABDAY_7
};
table[n] = nl_langinfo(items[n]);
}
#endif
result = table[n];
}
if (result == 0) {
result = "?";
}
return result;
}
static const char *
nameOfMonth(int n)
{
static const char *table[12]
#ifndef ENABLE_NLS
=
{
"January",
"February",
"March",
"April",
"May",
"June",
"July",
"August",
"September",
"October",
"November",
"December"
}
#endif
;
const char *result = 0;
if (n >= 0 && n < 12) {
#ifdef ENABLE_NLS
if (table[n] == 0) {
nl_item items[12] =
{
MON_1, MON_2, MON_3, MON_4, MON_5, MON_6,
MON_7, MON_8, MON_9, MON_10, MON_11, MON_12
};
table[n] = nl_langinfo(items[n]);
}
#endif
result = table[n];
}
if (result == 0) {
result = "?";
}
return result;
}
static int
days_in_month(struct tm *current, int offset /* -1, 0, 1 */ )
{
static const int nominal[] =
{
31, 28, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31
};
int year = current->tm_year;
int month = current->tm_mon + offset;
int result;
while (month < 0) {
month += 12;
year -= 1;
}
while (month >= 12) {
month -= 12;
year += 1;
}
result = nominal[month];
if (month == 1)
result += ((year % 4) == 0);
return result;
}
static int
days_in_year(struct tm *current, int offset /* -1, 0, 1 */ )
{
int year = current->tm_year + 1900 + offset;
return ((year % 4) == 0) ? 366 : 365;
}
static int
day_cell_number(struct tm *current)
{
int cell;
cell = current->tm_mday - ((6 + current->tm_mday - current->tm_wday) % 7);
if ((current->tm_mday - 1) % 7 != current->tm_wday)
cell += 6;
else
cell--;
return cell;
}
static int
next_or_previous(int key, int two_d)
{
int result = 0;
switch (key) {
case DLGK_GRID_UP:
result = two_d ? -7 : -1;
break;
case DLGK_GRID_LEFT:
result = -1;
break;
case DLGK_GRID_DOWN:
result = two_d ? 7 : 1;
break;
case DLGK_GRID_RIGHT:
result = 1;
break;
default:
beep();
break;
}
return result;
}
/*
* Draw the day-of-month selection box
*/
static int
draw_day(BOX * data, struct tm *current)
{
int cell_wide = MON_WIDE;
int y, x, this_x = 0;
int save_y = 0, save_x = 0;
int day = current->tm_mday;
int mday;
int week;
int last = days_in_month(current, 0);
int prev = days_in_month(current, -1);
werase(data->window);
dlg_draw_box2(data->parent,
data->y - MARGIN, data->x - MARGIN,
data->height + (2 * MARGIN), data->width + (2 * MARGIN),
menubox_attr,
menubox_border_attr,
menubox_border2_attr);
(void) wattrset(data->window, menubox_attr); /* daynames headline */
for (x = 0; x < 7; x++) {
mvwprintw(data->window,
0, (x + 1) * cell_wide, "%*.*s ",
cell_wide - 1,
cell_wide - 1,
nameOfDayOfWeek(x));
}
mday = ((6 + current->tm_mday - current->tm_wday) % 7) - 7;
if (mday <= -7)
mday += 7;
/* mday is now in the range -6 to 0. */
week = (current->tm_yday + 6 + mday - current->tm_mday) / 7;
for (y = 1; mday < last; y++) {
(void) wattrset(data->window, menubox_attr); /* weeknumbers headline */
mvwprintw(data->window,
y, 0,
"%*d ",
cell_wide - 1,
++week);
for (x = 0; x < 7; x++) {
this_x = 1 + (x + 1) * cell_wide;
++mday;
if (wmove(data->window, y, this_x) == ERR)
continue;
(void) wattrset(data->window, item_attr); /* not selected days */
if (mday == day) {
(void) wattrset(data->window, item_selected_attr); /* selected day */
save_y = y;
save_x = this_x;
}
if (mday > 0) {
if (mday <= last) {
wprintw(data->window, "%*d", cell_wide - 2, mday);
} else if (mday == day) {
wprintw(data->window, "%*d", cell_wide - 2, mday - last);
}
} else if (mday == day) {
wprintw(data->window, "%*d", cell_wide - 2, mday + prev);
}
}
wmove(data->window, save_y, save_x);
}
/* just draw arrows - scrollbar is unsuitable here */
dlg_draw_arrows(data->parent, TRUE, TRUE,
data->x + ARROWS_COL,
data->y - 1,
data->y + data->height);
return 0;
}
/*
* Draw the month-of-year selection box
*/
static int
draw_month(BOX * data, struct tm *current)
{
int month;
month = current->tm_mon + 1;
(void) wattrset(data->parent, dialog_attr); /* Headline "Month" */
(void) mvwprintw(data->parent, data->y - 2, data->x - 1, _("Month"));
dlg_draw_box2(data->parent,
data->y - 1, data->x - 1,
data->height + 2, data->width + 2,
menubox_attr,
menubox_border_attr,
menubox_border2_attr);
(void) wattrset(data->window, item_attr); /* color the month selection */
mvwprintw(data->window, 0, 0, "%s", nameOfMonth(month - 1));
wmove(data->window, 0, 0);
return 0;
}
/*
* Draw the year selection box
*/
static int
draw_year(BOX * data, struct tm *current)
{
int year = current->tm_year + 1900;
(void) wattrset(data->parent, dialog_attr); /* Headline "Year" */
(void) mvwprintw(data->parent, data->y - 2, data->x - 1, _("Year"));
dlg_draw_box2(data->parent,
data->y - 1, data->x - 1,
data->height + 2, data->width + 2,
menubox_attr,
menubox_border_attr,
menubox_border2_attr);
(void) wattrset(data->window, item_attr); /* color the year selection */
mvwprintw(data->window, 0, 0, "%4d", year);
wmove(data->window, 0, 0);
return 0;
}
static int
init_object(BOX * data,
WINDOW *parent,
int x, int y,
int width, int height,
BOX_DRAW box_draw,
int code)
{
data->parent = parent;
data->x = x;
data->y = y;
data->width = width;
data->height = height;
data->box_draw = box_draw;
data->window = derwin(data->parent,
data->height, data->width,
data->y, data->x);
if (data->window == 0)
return -1;
(void) keypad(data->window, TRUE);
dlg_mouse_setbase(getbegx(parent), getbegy(parent));
if (code == 'D') {
dlg_mouse_mkbigregion(y + 1, x + MON_WIDE, height - 1, width - MON_WIDE,
KEY_MAX, 1, MON_WIDE, 3);
} else {
dlg_mouse_mkregion(y, x, height, width, code);
}
return 0;
}
static int
CleanupResult(int code, WINDOW *dialog, char *prompt, DIALOG_VARS * save_vars)
{
if (dialog != 0)
dlg_del_window(dialog);
dlg_mouse_free_regions();
if (prompt != 0)
free(prompt);
dlg_restore_vars(save_vars);
return code;
}
#define DrawObject(data) (data)->box_draw(data, &current)
/*
* Display a dialog box for entering a date
*/
int
dialog_calendar(const char *title,
const char *subtitle,
int height,
int width,
int day,
int month,
int year)
{
/* *INDENT-OFF* */
static DLG_KEYS_BINDING binding[] = {
HELPKEY_BINDINGS,
ENTERKEY_BINDINGS,
DLG_KEYS_DATA( DLGK_ENTER, ' ' ),
DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
DLG_KEYS_DATA( DLGK_GRID_DOWN, 'j' ),
DLG_KEYS_DATA( DLGK_GRID_DOWN, DLGK_MOUSE(KEY_NPAGE) ),
DLG_KEYS_DATA( DLGK_GRID_DOWN, KEY_DOWN ),
DLG_KEYS_DATA( DLGK_GRID_DOWN, KEY_NPAGE ),
DLG_KEYS_DATA( DLGK_GRID_LEFT, '-' ),
DLG_KEYS_DATA( DLGK_GRID_LEFT, 'h' ),
DLG_KEYS_DATA( DLGK_GRID_LEFT, CHR_BACKSPACE ),
DLG_KEYS_DATA( DLGK_GRID_LEFT, CHR_PREVIOUS ),
DLG_KEYS_DATA( DLGK_GRID_LEFT, KEY_LEFT ),
DLG_KEYS_DATA( DLGK_GRID_RIGHT, '+' ),
DLG_KEYS_DATA( DLGK_GRID_RIGHT, 'l' ),
DLG_KEYS_DATA( DLGK_GRID_RIGHT, CHR_NEXT ),
DLG_KEYS_DATA( DLGK_GRID_RIGHT, KEY_NEXT ),
DLG_KEYS_DATA( DLGK_GRID_RIGHT, KEY_RIGHT ),
DLG_KEYS_DATA( DLGK_GRID_UP, 'k' ),
DLG_KEYS_DATA( DLGK_GRID_UP, KEY_PPAGE ),
DLG_KEYS_DATA( DLGK_GRID_UP, KEY_PREVIOUS ),
DLG_KEYS_DATA( DLGK_GRID_UP, KEY_UP ),
DLG_KEYS_DATA( DLGK_GRID_UP, DLGK_MOUSE(KEY_PPAGE) ),
END_KEYS_BINDING
};
/* *INDENT-ON* */
#ifdef KEY_RESIZE
int old_height = height;
int old_width = width;
#endif
BOX dy_box, mn_box, yr_box;
int fkey;
int key = 0;
int key2;
int step;
int button;
int result = DLG_EXIT_UNKNOWN;
WINDOW *dialog;
time_t now_time = time((time_t *) 0);
struct tm current;
int state = dlg_default_button();
const char **buttons = dlg_ok_labels();
char *prompt = dlg_strclone(subtitle);
int mincols = MIN_WIDE;
char buffer[MAX_LEN];
DIALOG_VARS save_vars;
dlg_save_vars(&save_vars);
dialog_vars.separate_output = TRUE;
dlg_does_output();
now_time = time((time_t *) 0);
current = *localtime(&now_time);
if (day < 0)
day = current.tm_mday;
if (month < 0)
month = current.tm_mon + 1;
if (year < 0)
year = current.tm_year + 1900;
/* compute a struct tm that matches the day/month/year parameters */
if (((year -= 1900) > 0) && (year < 200)) {
/* ugly, but I'd like to run this on older machines w/o mktime -TD */
for (;;) {
if (year > current.tm_year) {
now_time += ONE_DAY * days_in_year(&current, 0);
} else if (year < current.tm_year) {
now_time -= ONE_DAY * days_in_year(&current, -1);
} else if (month > current.tm_mon + 1) {
now_time += ONE_DAY * days_in_month(&current, 0);
} else if (month < current.tm_mon + 1) {
now_time -= ONE_DAY * days_in_month(&current, -1);
} else if (day > current.tm_mday) {
now_time += ONE_DAY;
} else if (day < current.tm_mday) {
now_time -= ONE_DAY;
} else {
break;
}
current = *localtime(&now_time);
}
}
dlg_button_layout(buttons, &mincols);
#ifdef KEY_RESIZE
retry:
#endif
dlg_auto_size(title, prompt, &height, &width, 0, mincols);
height += MIN_HIGH - 1;
dlg_print_size(height, width);
dlg_ctl_size(height, width);
dialog = dlg_new_window(height, width,
dlg_box_y_ordinate(height),
dlg_box_x_ordinate(width));
dlg_register_window(dialog, "calendar", binding);
dlg_register_buttons(dialog, "calendar", buttons);
/* mainbox */
dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
dlg_draw_title(dialog, title);
(void) wattrset(dialog, dialog_attr); /* text mainbox */
dlg_print_autowrap(dialog, prompt, height, width);
/* compute positions of day, month and year boxes */
memset(&dy_box, 0, sizeof(dy_box));
memset(&mn_box, 0, sizeof(mn_box));
memset(&yr_box, 0, sizeof(yr_box));
if (init_object(&dy_box,
dialog,
(width - DAY_WIDE) / 2,
1 + (height - (DAY_HIGH + BTN_HIGH + (5 * MARGIN))),
DAY_WIDE,
DAY_HIGH + 1,
draw_day,
'D') < 0
|| DrawObject(&dy_box) < 0) {
return CleanupResult(DLG_EXIT_ERROR, dialog, prompt, &save_vars);
}
if (init_object(&mn_box,
dialog,
dy_box.x,
dy_box.y - (HDR_HIGH + 2 * MARGIN),
(DAY_WIDE / 2) - MARGIN,
HDR_HIGH,
draw_month,
'M') < 0
|| DrawObject(&mn_box) < 0) {
return CleanupResult(DLG_EXIT_ERROR, dialog, prompt, &save_vars);
}
if (init_object(&yr_box,
dialog,
dy_box.x + mn_box.width + 2,
mn_box.y,
mn_box.width,
mn_box.height,
draw_year,
'Y') < 0
|| DrawObject(&yr_box) < 0) {
return CleanupResult(DLG_EXIT_ERROR, dialog, prompt, &save_vars);
}
dlg_trace_win(dialog);
while (result == DLG_EXIT_UNKNOWN) {
BOX *obj = (state == sDAY ? &dy_box
: (state == sMONTH ? &mn_box :
(state == sYEAR ? &yr_box : 0)));
button = (state < 0) ? 0 : state;
dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
if (obj != 0)
dlg_set_focus(dialog, obj->window);
key = dlg_mouse_wgetch(dialog, &fkey);
if (dlg_result_key(key, fkey, &result))
break;
if (fkey && (key >= DLGK_MOUSE(KEY_MIN) && key <= DLGK_MOUSE(KEY_MAX))) {
key = dlg_lookup_key(dialog, key - M_EVENT, &fkey);
}
if ((key2 = dlg_char_to_button(key, buttons)) >= 0) {
result = key2;
} else if (fkey) {
/* handle function-keys */
switch (key) {
case DLGK_MOUSE('D'):
state = sDAY;
break;
case DLGK_MOUSE('M'):
state = sMONTH;
break;
case DLGK_MOUSE('Y'):
state = sYEAR;
break;
case DLGK_ENTER:
result = dlg_enter_buttoncode(button);
break;
case DLGK_FIELD_PREV:
state = dlg_prev_ok_buttonindex(state, sMONTH);
break;
case DLGK_FIELD_NEXT:
state = dlg_next_ok_buttonindex(state, sMONTH);
break;
#ifdef KEY_RESIZE
case 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
default:
step = 0;
key2 = -1;
if (is_DLGK_MOUSE(key)) {
if ((key2 = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
result = key2;
break;
} else if (key >= DLGK_MOUSE(KEY_MAX)) {
state = sDAY;
obj = &dy_box;
key2 = 1;
step = (key
- DLGK_MOUSE(KEY_MAX)
- day_cell_number(&current));
}
}
if (obj != 0) {
if (key2 < 0)
step = next_or_previous(key, (obj == &dy_box));
if (step != 0) {
struct tm old = current;
/* see comment regarding mktime -TD */
if (obj == &dy_box) {
now_time += ONE_DAY * step;
} else if (obj == &mn_box) {
if (step > 0)
now_time += ONE_DAY *
days_in_month(&current, 0);
else
now_time -= ONE_DAY *
days_in_month(&current, -1);
} else if (obj == &yr_box) {
if (step > 0)
now_time += (ONE_DAY
* days_in_year(&current, 0));
else
now_time -= (ONE_DAY
* days_in_year(&current, -1));
}
current = *localtime(&now_time);
if (obj != &dy_box
&& (current.tm_mday != old.tm_mday
|| current.tm_mon != old.tm_mon
|| current.tm_year != old.tm_year))
DrawObject(&dy_box);
if (obj != &mn_box && current.tm_mon != old.tm_mon)
DrawObject(&mn_box);
if (obj != &yr_box && current.tm_year != old.tm_year)
DrawObject(&yr_box);
(void) DrawObject(obj);
}
} else if (state >= 0) {
if (next_or_previous(key, FALSE) < 0)
state = dlg_prev_ok_buttonindex(state, sMONTH);
else if (next_or_previous(key, FALSE) > 0)
state = dlg_next_ok_buttonindex(state, sMONTH);
}
break;
}
}
}
#define DefaultFormat(dst, src) \
sprintf(dst, "%02d/%02d/%0d", \
src.tm_mday, src.tm_mon + 1, src.tm_year + 1900)
#ifdef HAVE_STRFTIME
if (dialog_vars.date_format != 0) {
size_t used = strftime(buffer,
sizeof(buffer) - 1,
dialog_vars.date_format,
&current);
if (used == 0 || *buffer == '\0')
DefaultFormat(buffer, current);
} else
#endif
DefaultFormat(buffer, current);
dlg_add_result(buffer);
dlg_add_separator();
dlg_add_last_key(-1);
return CleanupResult(result, dialog, prompt, &save_vars);
}
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