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+/* $calcurse: calendar.c,v 1.1 2006/07/31 21:00:02 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)
+{
+ char selected_day[50] = "";
+ int dday, dmonth, dyear;
+ int wrong_day = 0;
+ 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] : dd/mm/yyyy");
+
+ while (wrong_day != 1) {
+ status_mesg(request_date, "");
+ getstring(swin, colr, selected_day, 0, 1);
+ if (strlen(selected_day) == 0) // go to today
+ {
+ *sel_day = day;
+ *sel_month = month;
+ *sel_year = year;
+ break;
+ } else {
+ sscanf(selected_day, "%u/%u/%u", &dday, &dmonth,
+ &dyear);
+ //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;
+ } else {
+ status_mesg(mesg_line1, mesg_line2);
+ wgetch(swin);
+ }
+ break;
+ }
+ }
+ return;
+}
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