688 lines
16 KiB
C
688 lines
16 KiB
C
/*
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* $Id: calendar.c,v 1.67 2013/03/17 15:03:41 tom Exp $
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*
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* calendar.c -- implements the calendar box
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*
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* Copyright 2001-2012,2013 Thomas E. Dickey
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License, version 2.1
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to
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* Free Software Foundation, Inc.
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* 51 Franklin St., Fifth Floor
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* Boston, MA 02110, USA.
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*/
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#include <dialog.h>
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#include <dlg_keys.h>
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#include <time.h>
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#define ONE_DAY (60 * 60 * 24)
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#define MON_WIDE 4 /* width of a month-name */
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#define DAY_HIGH 6 /* maximum lines in day-grid */
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#define DAY_WIDE (8 * MON_WIDE) /* width of the day-grid */
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#define HDR_HIGH 1 /* height of cells with month/year */
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#define BTN_HIGH 1 /* height of button-row excluding margin */
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/* two more lines: titles for day-of-week and month/year boxes */
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#define MIN_HIGH (DAY_HIGH + 2 + HDR_HIGH + BTN_HIGH + (7 * MARGIN))
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#define MIN_WIDE (DAY_WIDE + (4 * MARGIN))
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typedef enum {
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sMONTH = -3
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,sYEAR = -2
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,sDAY = -1
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} STATES;
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struct _box;
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typedef int (*BOX_DRAW) (struct _box *, struct tm *);
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typedef struct _box {
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WINDOW *parent;
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WINDOW *window;
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int x;
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int y;
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int width;
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int height;
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BOX_DRAW box_draw;
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} BOX;
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static const char *
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nameOfDayOfWeek(int n)
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{
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static const char *table[7]
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#ifndef ENABLE_NLS
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=
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{
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"Sunday",
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"Monday",
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"Tuesday",
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"Wednesday",
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"Thursday",
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"Friday",
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"Saturday"
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}
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#endif
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;
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const char *result = 0;
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if (n >= 0 && n < 7) {
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#ifdef ENABLE_NLS
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if (table[n] == 0) {
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nl_item items[7] =
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{
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ABDAY_1, ABDAY_2, ABDAY_3, ABDAY_4, ABDAY_5, ABDAY_6, ABDAY_7
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};
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table[n] = nl_langinfo(items[n]);
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}
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#endif
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result = table[n];
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}
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if (result == 0) {
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result = "?";
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}
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return result;
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}
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static const char *
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nameOfMonth(int n)
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{
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static const char *table[12]
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#ifndef ENABLE_NLS
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=
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{
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"January",
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"February",
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"March",
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"April",
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"May",
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"June",
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"July",
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"August",
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"September",
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"October",
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"November",
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"December"
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}
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#endif
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;
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const char *result = 0;
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if (n >= 0 && n < 12) {
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#ifdef ENABLE_NLS
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if (table[n] == 0) {
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nl_item items[12] =
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{
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MON_1, MON_2, MON_3, MON_4, MON_5, MON_6,
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MON_7, MON_8, MON_9, MON_10, MON_11, MON_12
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};
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table[n] = nl_langinfo(items[n]);
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}
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#endif
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result = table[n];
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}
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if (result == 0) {
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result = "?";
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}
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return result;
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}
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static int
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days_in_month(struct tm *current, int offset /* -1, 0, 1 */ )
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{
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static const int nominal[] =
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{
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31, 28, 31, 30, 31, 30,
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31, 31, 30, 31, 30, 31
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};
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int year = current->tm_year;
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int month = current->tm_mon + offset;
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int result;
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while (month < 0) {
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month += 12;
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year -= 1;
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}
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while (month >= 12) {
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month -= 12;
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year += 1;
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}
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result = nominal[month];
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if (month == 1)
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result += ((year % 4) == 0);
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return result;
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}
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static int
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days_in_year(struct tm *current, int offset /* -1, 0, 1 */ )
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{
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int year = current->tm_year + 1900 + offset;
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return ((year % 4) == 0) ? 366 : 365;
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}
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static int
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day_cell_number(struct tm *current)
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{
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int cell;
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cell = current->tm_mday - ((6 + current->tm_mday - current->tm_wday) % 7);
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if ((current->tm_mday - 1) % 7 != current->tm_wday)
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cell += 6;
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else
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cell--;
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return cell;
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}
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static int
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next_or_previous(int key, int two_d)
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{
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int result = 0;
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switch (key) {
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case DLGK_GRID_UP:
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result = two_d ? -7 : -1;
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break;
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case DLGK_GRID_LEFT:
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result = -1;
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break;
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case DLGK_GRID_DOWN:
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result = two_d ? 7 : 1;
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break;
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case DLGK_GRID_RIGHT:
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result = 1;
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break;
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default:
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beep();
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break;
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}
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return result;
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}
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/*
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* Draw the day-of-month selection box
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*/
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static int
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draw_day(BOX * data, struct tm *current)
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{
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int cell_wide = MON_WIDE;
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int y, x, this_x = 0;
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int save_y = 0, save_x = 0;
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int day = current->tm_mday;
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int mday;
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int week;
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int last = days_in_month(current, 0);
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int prev = days_in_month(current, -1);
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werase(data->window);
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dlg_draw_box2(data->parent,
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data->y - MARGIN, data->x - MARGIN,
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data->height + (2 * MARGIN), data->width + (2 * MARGIN),
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menubox_attr,
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menubox_border_attr,
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menubox_border2_attr);
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(void) wattrset(data->window, menubox_attr); /* daynames headline */
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for (x = 0; x < 7; x++) {
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mvwprintw(data->window,
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0, (x + 1) * cell_wide, "%*.*s ",
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cell_wide - 1,
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cell_wide - 1,
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nameOfDayOfWeek(x));
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}
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mday = ((6 + current->tm_mday - current->tm_wday) % 7) - 7;
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if (mday <= -7)
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mday += 7;
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/* mday is now in the range -6 to 0. */
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week = (current->tm_yday + 6 + mday - current->tm_mday) / 7;
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for (y = 1; mday < last; y++) {
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(void) wattrset(data->window, menubox_attr); /* weeknumbers headline */
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mvwprintw(data->window,
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y, 0,
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"%*d ",
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cell_wide - 1,
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++week);
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for (x = 0; x < 7; x++) {
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this_x = 1 + (x + 1) * cell_wide;
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++mday;
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if (wmove(data->window, y, this_x) == ERR)
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continue;
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(void) wattrset(data->window, item_attr); /* not selected days */
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if (mday == day) {
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(void) wattrset(data->window, item_selected_attr); /* selected day */
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save_y = y;
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save_x = this_x;
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}
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if (mday > 0) {
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if (mday <= last) {
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wprintw(data->window, "%*d", cell_wide - 2, mday);
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} else if (mday == day) {
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wprintw(data->window, "%*d", cell_wide - 2, mday - last);
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}
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} else if (mday == day) {
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wprintw(data->window, "%*d", cell_wide - 2, mday + prev);
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}
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}
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wmove(data->window, save_y, save_x);
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}
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/* just draw arrows - scrollbar is unsuitable here */
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dlg_draw_arrows(data->parent, TRUE, TRUE,
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data->x + ARROWS_COL,
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data->y - 1,
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data->y + data->height);
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return 0;
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}
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/*
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* Draw the month-of-year selection box
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*/
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static int
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draw_month(BOX * data, struct tm *current)
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{
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int month;
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month = current->tm_mon + 1;
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(void) wattrset(data->parent, dialog_attr); /* Headline "Month" */
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(void) mvwprintw(data->parent, data->y - 2, data->x - 1, _("Month"));
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dlg_draw_box2(data->parent,
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data->y - 1, data->x - 1,
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data->height + 2, data->width + 2,
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menubox_attr,
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menubox_border_attr,
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menubox_border2_attr);
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(void) wattrset(data->window, item_attr); /* color the month selection */
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mvwprintw(data->window, 0, 0, "%s", nameOfMonth(month - 1));
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wmove(data->window, 0, 0);
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return 0;
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}
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/*
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* Draw the year selection box
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*/
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static int
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draw_year(BOX * data, struct tm *current)
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{
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int year = current->tm_year + 1900;
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(void) wattrset(data->parent, dialog_attr); /* Headline "Year" */
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(void) mvwprintw(data->parent, data->y - 2, data->x - 1, _("Year"));
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dlg_draw_box2(data->parent,
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data->y - 1, data->x - 1,
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data->height + 2, data->width + 2,
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menubox_attr,
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menubox_border_attr,
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menubox_border2_attr);
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(void) wattrset(data->window, item_attr); /* color the year selection */
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mvwprintw(data->window, 0, 0, "%4d", year);
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wmove(data->window, 0, 0);
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return 0;
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}
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static int
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init_object(BOX * data,
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WINDOW *parent,
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int x, int y,
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int width, int height,
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BOX_DRAW box_draw,
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int code)
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{
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data->parent = parent;
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data->x = x;
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data->y = y;
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data->width = width;
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data->height = height;
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data->box_draw = box_draw;
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data->window = derwin(data->parent,
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data->height, data->width,
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data->y, data->x);
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if (data->window == 0)
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return -1;
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(void) keypad(data->window, TRUE);
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dlg_mouse_setbase(getbegx(parent), getbegy(parent));
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if (code == 'D') {
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dlg_mouse_mkbigregion(y + 1, x + MON_WIDE, height - 1, width - MON_WIDE,
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KEY_MAX, 1, MON_WIDE, 3);
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} else {
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dlg_mouse_mkregion(y, x, height, width, code);
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}
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return 0;
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}
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static int
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CleanupResult(int code, WINDOW *dialog, char *prompt, DIALOG_VARS * save_vars)
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{
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if (dialog != 0)
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dlg_del_window(dialog);
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dlg_mouse_free_regions();
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if (prompt != 0)
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free(prompt);
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dlg_restore_vars(save_vars);
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return code;
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}
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#define DrawObject(data) (data)->box_draw(data, ¤t)
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/*
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* Display a dialog box for entering a date
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*/
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int
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dialog_calendar(const char *title,
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const char *subtitle,
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int height,
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int width,
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int day,
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int month,
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int year)
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{
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/* *INDENT-OFF* */
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static DLG_KEYS_BINDING binding[] = {
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HELPKEY_BINDINGS,
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ENTERKEY_BINDINGS,
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DLG_KEYS_DATA( DLGK_ENTER, ' ' ),
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DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
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DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
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DLG_KEYS_DATA( DLGK_GRID_DOWN, 'j' ),
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DLG_KEYS_DATA( DLGK_GRID_DOWN, DLGK_MOUSE(KEY_NPAGE) ),
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DLG_KEYS_DATA( DLGK_GRID_DOWN, KEY_DOWN ),
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DLG_KEYS_DATA( DLGK_GRID_DOWN, KEY_NPAGE ),
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DLG_KEYS_DATA( DLGK_GRID_LEFT, '-' ),
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DLG_KEYS_DATA( DLGK_GRID_LEFT, 'h' ),
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DLG_KEYS_DATA( DLGK_GRID_LEFT, CHR_BACKSPACE ),
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DLG_KEYS_DATA( DLGK_GRID_LEFT, CHR_PREVIOUS ),
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DLG_KEYS_DATA( DLGK_GRID_LEFT, KEY_LEFT ),
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DLG_KEYS_DATA( DLGK_GRID_RIGHT, '+' ),
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DLG_KEYS_DATA( DLGK_GRID_RIGHT, 'l' ),
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DLG_KEYS_DATA( DLGK_GRID_RIGHT, CHR_NEXT ),
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DLG_KEYS_DATA( DLGK_GRID_RIGHT, KEY_NEXT ),
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DLG_KEYS_DATA( DLGK_GRID_RIGHT, KEY_RIGHT ),
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DLG_KEYS_DATA( DLGK_GRID_UP, 'k' ),
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DLG_KEYS_DATA( DLGK_GRID_UP, KEY_PPAGE ),
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DLG_KEYS_DATA( DLGK_GRID_UP, KEY_PREVIOUS ),
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DLG_KEYS_DATA( DLGK_GRID_UP, KEY_UP ),
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DLG_KEYS_DATA( DLGK_GRID_UP, DLGK_MOUSE(KEY_PPAGE) ),
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END_KEYS_BINDING
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};
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/* *INDENT-ON* */
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#ifdef KEY_RESIZE
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int old_height = height;
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int old_width = width;
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#endif
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BOX dy_box, mn_box, yr_box;
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int fkey;
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int key = 0;
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int key2;
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int step;
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int button;
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int result = DLG_EXIT_UNKNOWN;
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WINDOW *dialog;
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time_t now_time = time((time_t *) 0);
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struct tm current;
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int state = dlg_default_button();
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const char **buttons = dlg_ok_labels();
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char *prompt = dlg_strclone(subtitle);
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int mincols = MIN_WIDE;
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char buffer[MAX_LEN];
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DIALOG_VARS save_vars;
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dlg_save_vars(&save_vars);
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dialog_vars.separate_output = TRUE;
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dlg_does_output();
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now_time = time((time_t *) 0);
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current = *localtime(&now_time);
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if (day < 0)
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day = current.tm_mday;
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if (month < 0)
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month = current.tm_mon + 1;
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if (year < 0)
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year = current.tm_year + 1900;
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/* compute a struct tm that matches the day/month/year parameters */
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if (((year -= 1900) > 0) && (year < 200)) {
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/* ugly, but I'd like to run this on older machines w/o mktime -TD */
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for (;;) {
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if (year > current.tm_year) {
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now_time += ONE_DAY * days_in_year(¤t, 0);
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} else if (year < current.tm_year) {
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now_time -= ONE_DAY * days_in_year(¤t, -1);
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} else if (month > current.tm_mon + 1) {
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now_time += ONE_DAY * days_in_month(¤t, 0);
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} else if (month < current.tm_mon + 1) {
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now_time -= ONE_DAY * days_in_month(¤t, -1);
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} else if (day > current.tm_mday) {
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now_time += ONE_DAY;
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} else if (day < current.tm_mday) {
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now_time -= ONE_DAY;
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} else {
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break;
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}
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current = *localtime(&now_time);
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}
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}
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dlg_button_layout(buttons, &mincols);
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#ifdef KEY_RESIZE
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retry:
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#endif
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dlg_auto_size(title, prompt, &height, &width, 0, mincols);
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height += MIN_HIGH - 1;
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dlg_print_size(height, width);
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dlg_ctl_size(height, width);
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dialog = dlg_new_window(height, width,
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dlg_box_y_ordinate(height),
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dlg_box_x_ordinate(width));
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dlg_register_window(dialog, "calendar", binding);
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dlg_register_buttons(dialog, "calendar", buttons);
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/* mainbox */
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dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
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dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
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dlg_draw_title(dialog, title);
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(void) wattrset(dialog, dialog_attr); /* text mainbox */
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dlg_print_autowrap(dialog, prompt, height, width);
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/* compute positions of day, month and year boxes */
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memset(&dy_box, 0, sizeof(dy_box));
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memset(&mn_box, 0, sizeof(mn_box));
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memset(&yr_box, 0, sizeof(yr_box));
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if (init_object(&dy_box,
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dialog,
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(width - DAY_WIDE) / 2,
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1 + (height - (DAY_HIGH + BTN_HIGH + (5 * MARGIN))),
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DAY_WIDE,
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DAY_HIGH + 1,
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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(¤t));
|
|
}
|
|
}
|
|
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(¤t, 0);
|
|
else
|
|
now_time -= ONE_DAY *
|
|
days_in_month(¤t, -1);
|
|
} else if (obj == &yr_box) {
|
|
if (step > 0)
|
|
now_time += (ONE_DAY
|
|
* days_in_year(¤t, 0));
|
|
else
|
|
now_time -= (ONE_DAY
|
|
* days_in_year(¤t, -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,
|
|
¤t);
|
|
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);
|
|
}
|