aboutsummaryrefslogtreecommitdiffstats
path: root/src/calendar.c
blob: 6b0d40bf26f6eb3b43a236c31e61c8c87d946201 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
/*	$calcurse: calendar.c,v 1.5 2007/01/10 13:43:51 culot Exp $	*/

/*
 * Calcurse - text-based organizer
 * Copyright (c) 2004-2006 Frederic Culot
 *
 * 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Send your feedback or comments to : calcurse@culot.org
 * Calcurse home page : http://culot.org/calcurse
 *
 */

#include <ncurses.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <time.h>

#include "i18n.h"
#include "day.h"
#include "apoint.h"
#include "event.h"
#include "calendar.h"
#include "custom.h"
#include "vars.h"
#include "utils.h"

static unsigned months_to_days(unsigned);
static long years_to_days(unsigned);

  /* Load the calendar */
void
update_cal_panel(WINDOW *cwin, int nl_cal,
		 int nc_cal, int sel_month, int sel_year, int sel_day,
		 int day, int month, int year,
                 bool monday_first)
{
	int c_day, c_day_1, day_1_sav, numdays, j;
	unsigned yr, mo;
	int ofs_x, ofs_y;
	int item_this_day = 0;
	int title_lines = 3;
        int sunday_first = 0;

	// Inits
	erase_window_part(cwin, 1, title_lines, nc_cal - 2, nl_cal - 2);
	mo = sel_month;
	yr = sel_year;
        if (!monday_first) sunday_first = 1;
	
	// Offset for centering calendar in window
	ofs_y = 2 + (nl_cal - 9) / 2;
	ofs_x = (nc_cal - 27) / 2;


	//checking the number of days in february
	numdays = days[mo - 1];
	if (2 == mo && isBissextile(yr))
		++numdays;

	//the first calendar day will be monday or sunday, depending on the
        //value of week_begins_on_monday
	c_day_1 = (int) ((ymd_to_scalar(yr, mo, 1 + sunday_first) 
                          - (long) 1) % 7L);

	//Write the current month and year on top of the calendar
	custom_apply_attr(cwin, ATTR_HIGH);
	mvwprintw(cwin, ofs_y,
		 (nc_cal - (strlen(_(monthnames[mo - 1])) + 5)) / 2,
		 "%s %d", _(monthnames[mo - 1]), sel_year);
	custom_remove_attr(cwin, ATTR_HIGH);
	++ofs_y;

	//prints the days, with regards to the first day of the week
	custom_apply_attr(cwin, ATTR_HIGH);
	for (j = 0; j < 7; j++) {
		mvwprintw(cwin, ofs_y, ofs_x + 4 * j, "%s", 
                          _(daynames[1 + j - sunday_first]));
	}
	custom_remove_attr(cwin, ATTR_HIGH);

	day_1_sav = (c_day_1 + 1) * 3 + c_day_1 - 7;

	for (c_day = 1; c_day <= numdays; ++c_day, ++c_day_1, c_day_1 %= 7) {
		//check if the day contains an event or an appointment
		item_this_day = day_check_if_item(sel_year, sel_month, c_day);

		/* Go to next line, the week is over. */
		if (!c_day_1 && 1 != c_day) {	
			++ofs_y;
			ofs_x = 2 - day_1_sav - 4 * c_day - 1;
		}
		/* This is today, so print it in yellow. */
		if (c_day == day && month == sel_month 
				&& year == sel_year && day != sel_day)
		{
			custom_apply_attr(cwin, ATTR_LOWEST);
			mvwprintw(cwin, ofs_y + 1,
				 ofs_x + day_1_sav + 4 * c_day + 1, "%2d",
				 c_day);
			custom_remove_attr(cwin, ATTR_LOWEST);
		} else if (c_day == sel_day && ( (day != sel_day) | 
				(month != sel_month) | (year != sel_year) ))	
			/* This is the selected day, print it in red. */
		{
			custom_apply_attr(cwin, ATTR_MIDDLE);
			mvwprintw(cwin, ofs_y + 1,
				 ofs_x + day_1_sav + 4 * c_day + 1, "%2d",
				 c_day);
			custom_remove_attr(cwin, ATTR_MIDDLE);
		} else if (c_day == sel_day && day == sel_day && month == sel_month && year == sel_year)	//today is the selected day
		{
			custom_apply_attr(cwin, ATTR_MIDDLE);
			mvwprintw(cwin, ofs_y + 1,
				 ofs_x + day_1_sav + 4 * c_day + 1, "%2d",
				 c_day);
			custom_remove_attr(cwin, ATTR_MIDDLE);
		} else if (item_this_day) {
			custom_apply_attr(cwin, ATTR_LOW);
			mvwprintw(cwin, ofs_y + 1,
				 ofs_x + day_1_sav + 4 * c_day + 1, "%2d",
				 c_day);
			custom_remove_attr(cwin, ATTR_LOW);
		}

		else		// otherwise, print normal days in black
			mvwprintw(cwin, ofs_y + 1,
				 ofs_x + day_1_sav + 4 * c_day + 1, "%2d",
				 c_day);

	}
	wnoutrefresh(cwin);
}

int isBissextile(unsigned annee)
{
	return annee % 400 == 0 || (annee % 4 == 0 && annee % 100 != 0);
}

// convertion functions
unsigned months_to_days(unsigned mois)
{
	return (mois * 3057 - 3007) / 100;
}


long years_to_days(unsigned annee)
{
	return annee * 365L + annee / 4 - annee / 100 + annee / 400;
}

long ymd_to_scalar(unsigned annee, unsigned mois, unsigned jour)
{
	long scalaire;
	scalaire = jour + months_to_days(mois);
	if (mois > 2)
		scalaire -= isBissextile(annee) ? 1 : 2;
	annee--;
	scalaire += years_to_days(annee);
	return scalaire;
}

/* 
 * Ask for a date to jump to, then check the correctness of that date
 * and jump to it.
 * If the entered date is empty, automatically jump to the current date.
 * day, month, year are the current day given to that routine, and
 * sel_day, sel_month and sel_year represent the day given back.
 */
void
goto_day(int colr, int day, int month, int year,
	 int *sel_day, int *sel_month, int *sel_year)
{
#define LDAY 11
	char selected_day[LDAY] = "";
	int dday, dmonth, dyear;
	int wrong_day = 1;
	char *mesg_line1 = _("The day you entered is not valid");
	char *mesg_line2 = _("Press [ENTER] to continue");
	char *request_date = _("Enter the day to go to [ENTER for today] : mm/dd/yyyy");

	while (wrong_day) {
		status_mesg(request_date, "");
		if (getstring(swin, colr, selected_day, LDAY, 0, 1) == 1)
			return;
		else {
			if (strlen(selected_day) == 0) {
			// go to today
				wrong_day = 0;
				*sel_day = day;
				*sel_month = month;
				*sel_year = year;
			} else if (strlen(selected_day) != LDAY - 1) {
				wrong_day = 1;	
			} else {
				sscanf(selected_day, "%u/%u/%u", 
					&dmonth, &dday, &dyear);
				wrong_day = 0;
				//check if the entered day is correct
				if ((dday <= 0) | (dday >= 32))
					wrong_day = 1;
				if ((dmonth <= 0) | (dmonth >= 13))
					wrong_day = 1;
				if ((dyear <= 0) | (dyear >= 3000))
					wrong_day = 1;
				//go to chosen day
				if (wrong_day != 1) {
					*sel_day = dday;
					*sel_month = dmonth;
					*sel_year = dyear;
				} 
			}
			if (wrong_day) {
				status_mesg(mesg_line1, mesg_line2);
				wgetch(swin);
			}
		}
	}
	return;
}