From 7e926621afac4df1459886afa9031eaca18c9e15 Mon Sep 17 00:00:00 2001
From: sbosse <sbosse@uni-bremen.de>
Date: Mon, 14 Oct 2024 23:09:37 +0200
Subject: [PATCH] Mon 14 Oct 23:09:15 CEST 2024

---
 user/clock.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 user/clock.c

diff --git a/user/clock.c b/user/clock.c
new file mode 100644
index 0000000..4d6b0dd
--- /dev/null
+++ b/user/clock.c
@@ -0,0 +1,85 @@
+/*
+Copyright (C) 2016-2019 The University of Notre Dame
+This software is distributed under the GNU General Public License.
+See the file LICENSE for details.
+*/
+
+
+#include "library/syscalls.h"
+#include "library/string.h"
+#include "library/stdio.h"
+#include "library/nwindow.h"
+
+/*
+	Display time in a window
+*/
+
+void draw_clock( struct nwindow *nw, uint32_t hour, uint32_t minute, int timezone, int military, int x, int y, int padding, int r, int g, int b);
+
+int main(int argc, char *argv[])
+{
+	int timezone = 5;
+	int military = 0;
+
+	/* Get initial time */
+	struct rtc_time time;
+	syscall_system_rtc(&time);
+
+	/* Clock draw params */
+	int CLOCK_W = 55;
+	int CLOCK_H = 25;
+	int thickness = 4;
+
+	/* Set up window  */
+	struct nwindow *nw = nw_create_default();
+
+	/* Run Clock */
+	while(nw_getchar(nw,0)!='q') 
+	{
+		syscall_system_rtc(&time);
+		nw_clear(nw,0, 0, CLOCK_W, CLOCK_H);
+		draw_clock(nw,time.hour, time.minute, timezone, military, 0, 0, 2*thickness, 255, 255, 255);
+		syscall_process_sleep(2000);
+	}
+
+	return 0;
+}
+
+void draw_clock( struct nwindow *nw, uint32_t hour, uint32_t minute, int timezone, int military, int x, int y, int padding, int r, int g, int b)
+{
+	char h_str[100];
+	char m_str[100];
+	char time[100] = "";
+
+	/* Configure time */
+	int tz_hour = (int)hour - timezone;
+	if (tz_hour < 0)
+	{
+		tz_hour += 24;
+	}
+
+	if (military == 0 && tz_hour > 12)
+	{
+		tz_hour -= 12;
+	}
+
+	uint_to_string((uint32_t) tz_hour, h_str);
+	uint_to_string(minute, m_str);
+
+	/* Format time string */
+	if (strlen(h_str) == 1)
+	{
+		strcat(time, " ");
+	}
+	strcat(time, (const char *) h_str);
+	strcat(time, ":");
+	if (strlen(m_str) == 1)
+	{
+		strcat(time, "0");
+	}
+	strcat(time, (const char *) m_str);
+
+	nw_fgcolor(nw,r,g,b);
+	nw_string(nw,x + padding, y + padding, time);
+	nw_flush(nw);
+}