add sys_info_extended.py (rm-hull#163)

* feat: add enhanced sysinfo.py

* feat: upgrade

* feat: add font file, refer relative path

* feat: change filename (sys_info2.py -> sys_info_extended.py)

* lint

* feat: README, CONTRIBUTING, docstring

Author: rlaace423

CONTRIBUTING.rst

@@ -19,3 +19,4 @@ Contributors
 * Michael Svanström (@squeezeday)
 * Tomislav Kopić (@Tkopic001)
 * Maciej Sokolowski (@matemaciek)
+* Sangho Kim (@rlaace423)

README.rst

@@ -78,6 +78,7 @@ sprite_animation.py       Using sprite maps for animation effects
 starfield.py              3D starfield simulation
 sys_histogram.py          Display system information including a rolling histogram
 sys_info.py               Display basic system information
+sys_info_extended.py      Display detailed system information in graph format
 terminal.py               Simple println capabilities
 tv_snow.py                Example image-blitting
 tweet_scroll.py           Using Twitter's Streaming API to display scrolling notifications

examples/fonts/DejaVuSansMono.ttf

@@ -0,0 +1,166 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright (c) 2023 Richard Hull and contributors
+# See LICENSE.rst for details.
+
+"""
+Display detailed system information in graph format.
+It provides a display of CPU, memory, disk utilization, temperature, IP address and system Uptime.
+
+Needs psutil (+ dependencies) installed::
+
+  $ sudo apt-get install python-dev
+  $ sudo -H pip install psutil
+"""
+
+import time
+from pathlib import Path
+from datetime import datetime
+from demo_opts import get_device
+from luma.core.render import canvas
+from PIL import ImageFont
+import psutil
+import subprocess as sp
+import socket
+from collections import OrderedDict
+
+
+def get_temp():
+    temp = float(sp.getoutput("vcgencmd measure_temp").split("=")[1].split("'")[0])
+    return temp
+
+
+def get_cpu():
+    return psutil.cpu_percent()
+
+
+def get_mem():
+    return psutil.virtual_memory().percent
+
+
+def get_disk_usage():
+    usage = psutil.disk_usage("/")
+    return usage.used / usage.total * 100
+
+
+def get_uptime():
+    uptime = ("%s" % (datetime.now() - datetime.fromtimestamp(psutil.boot_time()))).split(".")[0]
+    return "UpTime: %s" % (uptime)
+
+
+def find_single_ipv4_address(addrs):
+    for addr in addrs:
+        if addr.family == socket.AddressFamily.AF_INET:  # IPv4
+            return addr.address
+
+
+def get_ipv4_address(interface_name=None):
+    if_addrs = psutil.net_if_addrs()
+
+    if isinstance(interface_name, str) and interface_name in if_addrs:
+        addrs = if_addrs.get(interface_name)
+        address = find_single_ipv4_address(addrs)
+        return address if isinstance(address, str) else ""
+    else:
+        if_stats = psutil.net_if_stats()
+        # remove loopback
+        if_stats_filtered = {key: if_stats[key] for key, stat in if_stats.items() if "loopback" not in stat.flags}
+        # sort interfaces by
+        # 1. Up/Down
+        # 2. Duplex mode (full: 2, half: 1, unknown: 0)
+        if_names_sorted = [stat[0] for stat in sorted(if_stats_filtered.items(), key=lambda x: (x[1].isup, x[1].duplex), reverse=True)]
+        if_addrs_sorted = OrderedDict((key, if_addrs[key]) for key in if_names_sorted if key in if_addrs)
+
+        for _, addrs in if_addrs_sorted.items():
+            address = find_single_ipv4_address(addrs)
+            if isinstance(address, str):
+                return address
+
+        return ""
+
+
+def get_ip(network_interface_name):
+    return "IP: %s" % (get_ipv4_address(network_interface_name))
+
+
+def format_percent(percent):
+    return "%5.1f" % (percent)
+
+
+def draw_text(draw, margin_x, line_num, text):
+    draw.text((margin_x, margin_y_line[line_num]), text, font=font_default, fill="white")
+
+
+def draw_bar(draw, line_num, percent):
+    top_left_y = margin_y_line[line_num] + bar_margin_top
+    draw.rectangle((margin_x_bar, top_left_y, margin_x_bar + bar_width, top_left_y + bar_height), outline="white")
+    draw.rectangle((margin_x_bar, top_left_y, margin_x_bar + bar_width * percent / 100, top_left_y + bar_height), fill="white")
+
+
+def draw_bar_full(draw, line_num):
+    top_left_y = margin_y_line[line_num] + bar_margin_top
+    draw.rectangle((margin_x_bar, top_left_y, margin_x_bar + bar_width_full, top_left_y + bar_height), fill="white")
+    draw.text((65, top_left_y - 2), "100 %", font=font_full, fill="black")
+
+
+def stats(device):
+    with canvas(device) as draw:
+        temp = get_temp()
+        draw_text(draw, 0, 0, "Temp")
+        draw_text(draw, margin_x_figure, 0, "%s'C" % (format_percent(temp)))
+
+        cpu = get_cpu()
+        draw_text(draw, 0, 1, "CPU")
+        if cpu < 100:
+            draw_text(draw, margin_x_figure, 1, "%s %%" % (format_percent(cpu)))
+            draw_bar(draw, 1, cpu)
+        else:
+            draw_bar_full(draw, 1)
+
+        mem = get_mem()
+        draw_text(draw, 0, 2, "Mem")
+        if mem < 100:
+            draw_text(draw, margin_x_figure, 2, "%s %%" % (format_percent(mem)))
+            draw_bar(draw, 2, mem)
+        else:
+            draw_bar_full(draw, 2)
+
+        disk = get_disk_usage()
+        draw_text(draw, 0, 3, "Disk")
+        if disk < 100:
+            draw_text(draw, margin_x_figure, 3, "%s %%" % (format_percent(disk)))
+            draw_bar(draw, 3, disk)
+        else:
+            draw_bar_full(draw, 3)
+
+        if datetime.now().second % (toggle_interval_seconds * 2) < toggle_interval_seconds:
+            draw_text(draw, 0, 4, get_uptime())
+        else:
+            draw_text(draw, 0, 4, get_ip(network_interface_name))
+
+
+font_size = 12
+font_size_full = 10
+margin_y_line = [0, 13, 25, 38, 51]
+margin_x_figure = 78
+margin_x_bar = 31
+bar_width = 52
+bar_width_full = 95
+bar_height = 8
+bar_margin_top = 3
+toggle_interval_seconds = 4
+
+
+# None : find suitable IPv4 address among all network interfaces
+# or specify the desired interface name as string.
+network_interface_name = None
+
+
+device = get_device()
+font_default = ImageFont.truetype(str(Path(__file__).resolve().parent.joinpath("fonts", "DejaVuSansMono.ttf")), font_size)
+font_full = ImageFont.truetype(str(Path(__file__).resolve().parent.joinpath("fonts", "DejaVuSansMono.ttf")), font_size_full)
+
+
+while True:
+    stats(device)
+    time.sleep(0.5)