implementation of notifying functions

src/notify.c

@@ -0,0 +1,116 @@
+/*	$calcurse: notify.c,v 1.1 2006/09/09 20:15:34 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 <pthread.h>
+#include <time.h>
+
+#include "custom.h"
+#include "vars.h"
+#include "notify.h"
+
+static struct notify_vars_s *notify = NULL;
+
+/* 
+ * Create the notification bar, by initializing all the variables and 
+ * creating the notification window (l is the number of lines, c the
+ * number of columns, y and x are its coordinates). 
+ */
+void notify_init_bar(int l, int c, int y, int x)
+{
+	pthread_t notify_thread;
+
+	notify = (struct notify_vars_s *) malloc(sizeof(struct notify_vars_s));	
+	pthread_mutex_init(&notify->mut, NULL);
+	notify->win = newwin(l, c, y, x);
+	notify_extract_aptsfile();
+	pthread_create(&notify_thread, NULL, notify_thread_sub, NULL);
+}
+
+/* 
+ * The calcurse window geometry as changed so we need to reset the 
+ * notification window. 
+ */
+void notify_reinit_bar(int l, int c, int y, int x)
+{
+	delwin(notify->win);
+	notify->win = newwin(l, c, y, x);
+}
+
+/* 
+ * Update the notification bar. This is useful when changing color theme
+ * for example.
+ */
+void notify_update_bar(void)
+{
+	int file_pos, date_pos;
+	
+	date_pos = 3;
+	file_pos = date_pos + 2*NOTIFY_FIELD_LENGTH;
+
+	pthread_mutex_lock(&notify->mut);
+
+	custom_apply_attr(notify->win, ATTR_HIGHEST);
+	wattron(notify->win, A_UNDERLINE | A_REVERSE);
+	mvwhline(notify->win, 0, 0, ACS_HLINE, col);
+	mvwprintw(notify->win, 0, date_pos, "[ %s | %s ]", 
+		notify->date, notify->time);
+	mvwprintw(notify->win, 0, file_pos, "(%s)", notify->apts_file);
+	wattroff(notify->win, A_UNDERLINE | A_REVERSE);
+	custom_remove_attr(notify->win, ATTR_HIGHEST);
+	wrefresh(notify->win);
+
+	pthread_mutex_unlock(&notify->mut);
+}
+
+/* Extract the appointment file name from the complete file path. */
+void notify_extract_aptsfile(void)
+{
+	notify->apts_file = strrchr(path_apts, '/');
+	notify->apts_file++;
+}
+
+/* Update the notication bar content */
+void *notify_thread_sub(void *arg)
+{
+	unsigned thread_sleep = 1;
+	struct tm *ntime;
+	time_t ntimer;
+	char *time_format = "%T";
+	char *date_format = "%a %F";
+
+	for (;;) {
+		ntimer = time(NULL);
+		ntime = localtime(&ntimer);
+		pthread_mutex_lock(&notify->mut);
+		strftime(notify->time, NOTIFY_FIELD_LENGTH, time_format, ntime);
+		strftime(notify->date, NOTIFY_FIELD_LENGTH, date_format, ntime);
+		notify_update_bar();
+		pthread_mutex_unlock(&notify->mut);
+		sleep(thread_sleep);
+	}
+	pthread_exit((void*) 0);
+}

src/notify.h

@@ -0,0 +1,49 @@
+/*	$calcurse: notify.h,v 1.1 2006/09/09 20:15:06 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
+ *
+ */
+
+#ifndef CALCURSE_NOTIFY_H
+#define CALCURSE_NOTIFY_H
+
+#include <ncurses.h>
+#include <pthread.h>
+
+#define NOTIFY_FIELD_LENGTH	20
+
+struct notify_vars_s {
+	WINDOW *win;
+	char *apts_file;
+	char time[NOTIFY_FIELD_LENGTH];
+	char date[NOTIFY_FIELD_LENGTH];
+	pthread_mutex_t mut;
+};
+
+void notify_init_bar(int l, int c, int y, int x);
+void notify_reinit_bar(int l, int c, int y, int x);
+void notify_update_bar(void);
+void notify_extract_aptsfile(void);
+void *notify_thread_sub(void *arg);
+
+#endif /* CALCURSE_NOTIFY_H */