Bar bar bar

config/lemonbar/bar.py

@@ -1,161 +1,22 @@
 #!/usr/bin/env python3
 
-"""
+from providers import *
-Debugging script
-"""
 
-import i3ipc
+if __name__ == "__main__":
-import os
+    Bar.init()
-import psutil
+    Updater.init()
-# import alsaaudio
-from time import time
-import subprocess
 
-i3 = i3ipc.Connection()
+    Bar.addSectionAll(I3Provider(), BarGroupType.LEFT)
-lemonbar = subprocess.Popen(['lemonbar', '-b'], stdin=subprocess.PIPE)
 
-# Utils
+    # TODO CPU provider
-def upChart(p):
+    # TODO RAM provider
-    block = ' ▁▂▃▄▅▆▇█'
+    # TODO Temperature provider
-    return block[round(p * (len(block)-1))]
+    # TODO Disk space provider
-
+    # TODO Screen (connected, autorandr configuration, bbswitch) provider
-def humanSizeOf(num, suffix='B'): # TODO Credit
+    # TODO Unlocked keys provider
-    for unit in ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']:
+    # TODO Mail provider
-        if abs(num) < 1024.0:
+    Bar.addSectionAll(TodoProvider(dir='~/.vdirsyncer/currentCalendars/'), BarGroupType.RIGHT)
-            return "%3.0f%2s%s" % (num, unit, suffix)
+    Bar.addSectionAll(NetworkProvider(), BarGroupType.RIGHT)
-        num /= 1024.0
+    Bar.addSectionAll(PulseaudioProvider(), BarGroupType.RIGHT)
-    return "%.0f%2s%s" % (num, 'Yi', suffix)
+    Bar.addSectionAll(BatteryProvider(), BarGroupType.RIGHT)
-
+    Bar.addSectionAll(TimeProvider(), BarGroupType.RIGHT)
-# Values
-mode = ''
-container = i3.get_tree().find_focused()
-workspaces = i3.get_workspaces()
-outputs = i3.get_outputs()
-
-username = os.environ['USER']
-hostname = os.environ['HOSTNAME']
-if '-' in hostname:
-    hostname = hostname.split('-')[-1]
-
-oldNetIO = dict()
-oldTime = time()
-
-def update():
-    activeOutputs = sorted(sorted(list(filter(lambda o: o.active, outputs)), key=lambda o: o.rect.y), key=lambda o: o.rect.x)
-    z = ''
-    for aOutput in range(len(activeOutputs)):
-        output = activeOutputs[aOutput]
-        # Mode || Workspaces
-        t = []
-        if (mode != ''):
-            t.append(mode)
-        else:
-            t.append(' '.join([(w.name.upper() if w.focused else w.name) for w in workspaces if w.output == output.name]))
-
-        # Windows Title
-        #if container:
-        #    t.append(container.name)
-
-        # CPU
-        t.append('C' + ''.join([upChart(p/100) for p in psutil.cpu_percent(percpu=True)]))
-
-        # Memory
-        t.append('M' + str(round(psutil.virtual_memory().percent)) + '% ' +
-                 'S' + str(round(psutil.swap_memory().percent)) + '%')
-
-        # Disks
-        d = []
-        for disk in psutil.disk_partitions():
-            e = ''
-            if disk.device.startswith('/dev/sd'):
-                e += 'S' + disk.device[-2:].upper()
-            elif disk.device.startswith('/dev/mmcblk'):
-                e += 'M' + disk.device[-3] + disk.device[-1]
-            else:
-                e += '?'
-            e += ' '
-            e += str(round(psutil.disk_usage(disk.mountpoint).percent)) + '%'
-            d.append(e)
-        t.append(' '.join(d))
-
-        # Network
-        netStats = psutil.net_if_stats()
-        netIO = psutil.net_io_counters(pernic=True)
-        net = []
-        for iface in filter(lambda i: i != 'lo' and netStats[i].isup, netStats.keys()):
-            s = ''
-            if iface.startswith('eth'):
-                s += 'E'
-            elif iface.startswith('wlan'):
-                s += 'W'
-            else:
-                s += '?'
-
-            s += ' '
-            now = time()
-            global oldNetIO, oldTime
-
-            sent = ((oldNetIO[iface].bytes_sent if iface in oldNetIO else 0) - (netIO[iface].bytes_sent if iface in netIO else 0)) / (oldTime - now)
-            recv = ((oldNetIO[iface].bytes_recv if iface in oldNetIO else 0) - (netIO[iface].bytes_recv if iface in netIO else 0)) / (oldTime - now)
-            s += '↓' + humanSizeOf(abs(recv), 'B/s') + ' ↑' + humanSizeOf(abs(sent), 'B/s')
-
-            oldNetIO = netIO
-            oldTime = now
-
-            net.append(s)
-        t.append(' '.join(net))
-
-        # Battery
-        if os.path.isdir('/sys/class/power_supply/BAT0'):
-            with open('/sys/class/power_supply/BAT0/charge_now') as f:
-                charge_now = int(f.read())
-            with open('/sys/class/power_supply/BAT0/charge_full_design') as f:
-                charge_full = int(f.read())
-            t.append('B' + str(round(100*charge_now/charge_full)) + '%')
-
-        # Volume
-        # t.append('V ' + str(alsaaudio.Mixer('Master').getvolume()[0]) + '%')
-
-        t.append(username + '@' + hostname)
-
-        # print(' - '.join(t))
-        # t = [output.name]
-
-        z += ' - '.join(t) + '%{S' + str(aOutput + 1) + '}'
-        #lemonbar.stdin.write(bytes(' - '.join(t), 'utf-8'))
-        #lemonbar.stdin.write(bytes('%{S' + str(aOutput + 1) + '}', 'utf-8'))
-
-    lemonbar.stdin.write(bytes(z+'\n', 'utf-8'))
-    lemonbar.stdin.flush()
-
-# Event listeners
-def on_mode(i3, e):
-    global mode
-    if (e.change == 'default'):
-        mode = ''
-    else :
-        mode = e.change
-    update()
-
-i3.on("mode", on_mode)
-
-#def on_window_focus(i3, e):
-#    global container
-#    container = e.container
-#    update()
-#
-#i3.on("window::focus", on_window_focus)
-
-def on_workspace_focus(i3, e):
-    global workspaces
-    workspaces = i3.get_workspaces()
-    update()
-
-i3.on("workspace::focus", on_workspace_focus)
-
-# Starting
-
-update()
-
-
-i3.main()

config/lemonbar/display.py

@@ -1,23 +1,24 @@
 #!/usr/bin/env python3
 
 import enum
-import logging
 import threading
 import time
 import subprocess
 
-# TODO Update strategies (periodic, inotify file)
-# TODO Section order (priority system maybe ?)
 # TODO Allow deletion of Bar, BarGroup and Section for screen changes
+# IDEA Use i3 ipc events rather than relying on xrandr or Xlib (less portable
+# but easier)
 # TODO Optimize to use write() calls instead of string concatenation (writing
 # BarGroup strings should be a good compromise)
 # TODO Use bytes rather than strings
 # TODO Use default colors of lemonbar sometimes
+# TODO Mouse actions
 
 
 class BarGroupType(enum.Enum):
     LEFT = 0
     RIGHT = 1
+    # TODO Middle
     # MID_LEFT = 2
     # MID_RIGHT = 3
 
@@ -28,24 +29,31 @@ class Bar:
     """
 
     # Constants
-    FONT = "DejaVu Sans Mono for Powerline"
+    FONTS = ["DejaVu Sans Mono for Powerline", "Font Awesome"]
 
     @staticmethod
     def init():
         Section.init()
 
-        cmd = ['lemonbar', '-f', Bar.FONT, '-b']
+        cmd = ['lemonbar', '-b']
+        for font in Bar.FONTS:
+            cmd += ["-f", font]
         Bar.process = subprocess.Popen(cmd, stdin=subprocess.PIPE)
 
         # Debug
-        # Bar(0)
+        Bar(0)
-        Bar(1)
+        # Bar(1)
 
     # Class globals
     everyone = set()
     string = ""
     process = None
 
+    @staticmethod
+    def forever():
+        while True:
+            time.sleep(60)
+
     def __init__(self, screen):
         assert isinstance(screen, int)
         self.screen = "%{S" + str(screen) + "}"
@@ -94,7 +102,7 @@ class Bar:
         # Color for empty sections
         Bar.string += BarGroup.color(*Section.EMPTY)
 
-        print(Bar.string)
+        # print(Bar.string)
         Bar.process.stdin.write(bytes(Bar.string + '\n', 'utf-8'))
         Bar.process.stdin.flush()
 
@@ -127,7 +135,12 @@ class BarGroup:
 
     def addSection(self, section):
         self.sections.append(section)
-        section.parents.add(self)
+        section.addParent(self)
+
+    def addSectionAfter(self, sectionRef, section):
+        index = self.sections.index(sectionRef)
+        self.sections.insert(index + 1, section)
+        section.addParent(self)
 
     ALIGNS = {BarGroupType.LEFT: "%{l}", BarGroupType.RIGHT: "%{r}"}
 
@@ -155,7 +168,7 @@ class BarGroup:
                 if self.groupType == BarGroupType.LEFT:
                     oSec = secs[s + 1] if s < lenS - 1 else None
                 else:
-                    oSec = secs[s - 1] if s > 1 else None
+                    oSec = secs[s - 1] if s > 0 else None
                 oTheme = Section.THEMES[oSec.theme] \
                     if oSec is not None else Section.EMPTY
 
@@ -164,7 +177,13 @@ class BarGroup:
                         parts.append(BarGroup.bgColor(theme[1]))
                     parts.append(BarGroup.fgColor(theme[0]))
                     parts.append(sec)
+                    if theme == oTheme:
+                        parts.append("")
+                    else:
                         parts.append(BarGroup.color(theme[1], oTheme[1]) + "")
+                else:
+                    if theme is oTheme:
+                        parts.append("")
                     else:
                         parts.append(BarGroup.fgColor(theme[1]) + "")
                         parts.append(BarGroup.color(*theme))
@@ -189,21 +208,29 @@ class BarGroup:
 
     @staticmethod
     def updateAll():
-
         for group in BarGroup.everyone:
-
             group.update()
-
         Bar.updateAll()
 
 
 class SectionThread(threading.Thread):
+    ANIMATION_START = 0.025
+    ANIMATION_STOP = 0.001
+    ANIMATION_EVOLUTION = 0.9
     def run(self):
         while Section.somethingChanged.wait():
             Section.updateAll()
+            animTime = self.ANIMATION_START
+            frameTime = time.perf_counter()
             while len(Section.sizeChanging) > 0:
-                time.sleep(0.1)
+                frameTime += animTime
+                curTime = time.perf_counter()
+                sleepTime = frameTime - curTime
+                time.sleep(sleepTime if sleepTime > 0 else 0)
                 Section.updateAll()
+                animTime *= self.ANIMATION_EVOLUTION
+                if animTime < self.ANIMATION_STOP:
+                    animTime = self.ANIMATION_STOP
 
 
 class Section:
@@ -218,19 +245,18 @@ class Section:
     THEMES = list()
     EMPTY = (FGCOLOR, BGCOLOR)
 
+    #: Sections that do not have their destination size
+    sizeChanging = set()
+    updateThread = SectionThread(daemon=True)
+    somethingChanged = threading.Event()
+
     @staticmethod
     def init():
         for t in range(8, 16):
             Section.THEMES.append((Section.COLORS[0], Section.COLORS[t]))
 
-        Section.updateThread = SectionThread(daemon=True)
         Section.updateThread.start()
 
-    #: Sections that do not have their destination size
-    sizeChanging = set()
-    somethingChanged = threading.Event()
-    updateThread = None
-
     def __init__(self, theme=0):
         #: Displayed section
         #: Note: A section can be empty and displayed!
@@ -252,10 +278,21 @@ class Section:
         self.parents = set()
 
     def __str__(self):
+        try:
             return "<{}><{}>{:01d}{}{:02d}/{:02d}" \
                 .format(self.curText, self.dstText,
                         self.theme, "+" if self.visible else "-",
                         self.curSize, self.dstSize)
+        except:
+            return super().__str__()
+
+    def addParent(self, parent):
+        self.parents.add(parent)
+
+    def appendAfter(self, section):
+        assert len(self.parents)
+        for parent in self.parents:
+            parent.addSectionAfter(self, section)
 
     def informParentsThemeChanged(self):
         for parent in self.parents:
@@ -267,8 +304,15 @@ class Section:
 
     def updateText(self, text):
         if len(text):
-            self.dstText = ' {} '.format(text)
+            if isinstance(text, str):
-            self.dstSize = len(self.dstText)
+                text = [text]
+            text = [' '] + text + [' ']
+
+            raw = [(t if isinstance(t, str) else t['text']) for t in text]
+            self.dstSize = sum([len(t) for t in raw])
+            # TODO FEAT Handle colors
+            # TODO OPTI Not like that
+            self.dstText = ''.join(raw)
         else:
             self.dstSize = 0
 
@@ -331,6 +375,9 @@ class Section:
 
         Section.somethingChanged.clear()
 
+    @staticmethod
+    def ramp(p, ramp=" ▁▂▃▄▅▆▇█"):
+        return ramp[round(p * (len(ramp)-1))]
 
 if __name__ == '__main__':
     Bar.init()

config/lemonbar/net.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+import psutil
+import subprocess
+
+netStats = psutil.net_if_stats()
+netAddrs = psutil.net_if_addrs()
+netIO = psutil.net_io_counters(pernic=True)
+
+for iface in netStats.keys():
+    if not netStats[iface].isup or iface.startswith('lo'):
+        continue
+
+    ssid = ''
+    if iface.startswith('eth') or iface.startswith('enp'):
+        icon = 'E'
+    elif iface.startswith('wlan') or iface.startswith('wlp'):
+        icon = 'W'
+        cmd = ["iwgetid", iface, "--raw"]
+        p = subprocess.run(cmd, stdout=subprocess.PIPE)
+        ssid = p.stdout.strip().decode()
+    # TODO Real icons
+    # TODO USB tethering
+    # TODO tan / tun
+    else:
+        icon = '?'
+
+    print(icon, iface, ssid)
+    print(netIO[iface])

config/lemonbar/oldbar.py

@@ -0,0 +1,161 @@
+#!/usr/bin/env python3
+
+"""
+Debugging script
+"""
+
+import i3ipc
+import os
+import psutil
+# import alsaaudio
+from time import time
+import subprocess
+
+i3 = i3ipc.Connection()
+lemonbar = subprocess.Popen(['lemonbar', '-b'], stdin=subprocess.PIPE)
+
+# Utils
+def upChart(p):
+    block = ' ▁▂▃▄▅▆▇█'
+    return block[round(p * (len(block)-1))]
+
+def humanSizeOf(num, suffix='B'): # TODO Credit
+    for unit in ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']:
+        if abs(num) < 1024.0:
+            return "%3.0f%2s%s" % (num, unit, suffix)
+        num /= 1024.0
+    return "%.0f%2s%s" % (num, 'Yi', suffix)
+
+# Values
+mode = ''
+container = i3.get_tree().find_focused()
+workspaces = i3.get_workspaces()
+outputs = i3.get_outputs()
+
+username = os.environ['USER']
+hostname = os.environ['HOSTNAME']
+if '-' in hostname:
+    hostname = hostname.split('-')[-1]
+
+oldNetIO = dict()
+oldTime = time()
+
+def update():
+    activeOutputs = sorted(sorted(list(filter(lambda o: o.active, outputs)), key=lambda o: o.rect.y), key=lambda o: o.rect.x)
+    z = ''
+    for aOutput in range(len(activeOutputs)):
+        output = activeOutputs[aOutput]
+        # Mode || Workspaces
+        t = []
+        if (mode != ''):
+            t.append(mode)
+        else:
+            t.append(' '.join([(w.name.upper() if w.focused else w.name) for w in workspaces if w.output == output.name]))
+
+        # Windows Title
+        #if container:
+        #    t.append(container.name)
+
+        # CPU
+        t.append('C' + ''.join([upChart(p/100) for p in psutil.cpu_percent(percpu=True)]))
+
+        # Memory
+        t.append('M' + str(round(psutil.virtual_memory().percent)) + '% ' +
+                 'S' + str(round(psutil.swap_memory().percent)) + '%')
+
+        # Disks
+        d = []
+        for disk in psutil.disk_partitions():
+            e = ''
+            if disk.device.startswith('/dev/sd'):
+                e += 'S' + disk.device[-2:].upper()
+            elif disk.device.startswith('/dev/mmcblk'):
+                e += 'M' + disk.device[-3] + disk.device[-1]
+            else:
+                e += '?'
+            e += ' '
+            e += str(round(psutil.disk_usage(disk.mountpoint).percent)) + '%'
+            d.append(e)
+        t.append(' '.join(d))
+
+        # Network
+        netStats = psutil.net_if_stats()
+        netIO = psutil.net_io_counters(pernic=True)
+        net = []
+        for iface in filter(lambda i: i != 'lo' and netStats[i].isup, netStats.keys()):
+            s = ''
+            if iface.startswith('eth'):
+                s += 'E'
+            elif iface.startswith('wlan'):
+                s += 'W'
+            else:
+                s += '?'
+
+            s += ' '
+            now = time()
+            global oldNetIO, oldTime
+
+            sent = ((oldNetIO[iface].bytes_sent if iface in oldNetIO else 0) - (netIO[iface].bytes_sent if iface in netIO else 0)) / (oldTime - now)
+            recv = ((oldNetIO[iface].bytes_recv if iface in oldNetIO else 0) - (netIO[iface].bytes_recv if iface in netIO else 0)) / (oldTime - now)
+            s += '↓' + humanSizeOf(abs(recv), 'B/s') + ' ↑' + humanSizeOf(abs(sent), 'B/s')
+
+            oldNetIO = netIO
+            oldTime = now
+
+            net.append(s)
+        t.append(' '.join(net))
+
+        # Battery
+        if os.path.isdir('/sys/class/power_supply/BAT0'):
+            with open('/sys/class/power_supply/BAT0/charge_now') as f:
+                charge_now = int(f.read())
+            with open('/sys/class/power_supply/BAT0/charge_full_design') as f:
+                charge_full = int(f.read())
+            t.append('B' + str(round(100*charge_now/charge_full)) + '%')
+
+        # Volume
+        # t.append('V ' + str(alsaaudio.Mixer('Master').getvolume()[0]) + '%')
+
+        t.append(username + '@' + hostname)
+
+        # print(' - '.join(t))
+        # t = [output.name]
+
+        z += ' - '.join(t) + '%{S' + str(aOutput + 1) + '}'
+        #lemonbar.stdin.write(bytes(' - '.join(t), 'utf-8'))
+        #lemonbar.stdin.write(bytes('%{S' + str(aOutput + 1) + '}', 'utf-8'))
+
+    lemonbar.stdin.write(bytes(z+'\n', 'utf-8'))
+    lemonbar.stdin.flush()
+
+# Event listeners
+def on_mode(i3, e):
+    global mode
+    if (e.change == 'default'):
+        mode = ''
+    else :
+        mode = e.change
+    update()
+
+i3.on("mode", on_mode)
+
+#def on_window_focus(i3, e):
+#    global container
+#    container = e.container
+#    update()
+#
+#i3.on("window::focus", on_window_focus)
+
+def on_workspace_focus(i3, e):
+    global workspaces
+    workspaces = i3.get_workspaces()
+    update()
+
+i3.on("workspace::focus", on_workspace_focus)
+
+# Starting
+
+update()
+
+
+i3.main()

config/lemonbar/providers.py

@@ -0,0 +1,397 @@
+#!/usr/bin/env python3
+
+import datetime
+from updaters import *
+from display import *
+import pulsectl
+import psutil
+import subprocess
+import socket
+import ipaddress
+import logging
+import coloredlogs
+import json
+import i3ipc
+from pprint import pprint
+
+coloredlogs.install(level='DEBUG', fmt='%(levelname)s %(message)s')
+log = logging.getLogger()
+
+
+def humanSize(num):
+    """
+    Returns a string of width 3+3
+    """
+    for unit in ('B  ','KiB','MiB','GiB','TiB','PiB','EiB','ZiB'):
+        if abs(num) < 1000:
+            if num >= 10:
+                return "{:3d}{}".format(int(num), unit)
+            else:
+                return "{:.1f}{}".format(num, unit)
+        num /= 1024.0
+    return "{:d}YiB".format(num)
+
+
+class TimeProvider(Section, PeriodicUpdater):
+    def fetcher(self):
+        now = datetime.datetime.now()
+        return now.strftime('%d/%m/%y %H:%M:%S')
+
+    def __init__(self):
+        PeriodicUpdater.__init__(self)
+        Section.__init__(self)
+        self.changeInterval(1)
+
+
+class BatteryProvider(Section, PeriodicUpdater):
+
+    RAMP = ""
+
+    def fetcher(self):
+        with open(self.batdir + 'status') as f:
+            status = f.read().strip()
+        if status == "Full":
+            return ""
+        elif status == "Discharging":
+            icon = ""
+        elif status == "Charging":
+            icon = ""
+        else:
+            log.warn("Unknwon battery status: {}".format(status))
+            icon = "?"
+        with open(self.batdir + 'capacity') as f:
+            capacity = int(f.read())
+        icon += self.ramp(capacity/100, self.RAMP)
+        return '{} {}%'.format(icon, capacity)
+
+    def __init__(self, battery='BAT0'):
+        PeriodicUpdater.__init__(self)
+        Section.__init__(self)
+
+        self.batdir = '/sys/class/power_supply/{}/'.format(battery)
+        assert os.path.isdir(self.batdir)
+
+        self.changeInterval(5)
+
+
+class PulseaudioProvider(Section, ThreadedUpdater):
+    def __init__(self):
+        ThreadedUpdater.__init__(self)
+        Section.__init__(self)
+        self.pulseEvents = pulsectl.Pulse('event-handler')
+
+        self.pulseEvents.event_mask_set(pulsectl.PulseEventMaskEnum.sink)
+        self.pulseEvents.event_callback_set(self.handleEvent)
+        self.start()
+        self.refreshData()
+
+
+    def fetcher(self):
+        sinks = []
+        with pulsectl.Pulse('list-sinks') as pulse:
+            for sink in pulse.sink_list():
+                vol = pulse.volume_get_all_chans(sink)
+                if vol > 1:
+                    vol = 1
+
+                if sink.port_active.name == "analog-output-headphones":
+                    icon = ""
+                elif sink.port_active.name == "analog-output-speaker":
+                    icon = ""
+                else:
+                    icon = "?"
+
+                ramp = "" if sink.mute else (" " + self.ramp(vol))
+                sinks.append(icon + ramp)
+        return " ".join(sinks)
+
+    def loop(self):
+        self.pulseEvents.event_listen()
+
+    def handleEvent(self, ev):
+        self.refreshData()
+
+class NetworkProviderSection(Section, Updater):
+    THEME = 5
+
+    def fetcher(self):
+        text = ''
+
+        if self.iface not in self.parent.stats or \
+                not self.parent.stats[self.iface].isup or \
+                self.iface.startswith('lo'):
+            return text
+
+        # Get addresses
+        ipv4 = None
+        ipv6 = None
+        for address in self.parent.addrs[self.iface]:
+            if address.family == socket.AF_INET:
+                ipv4 = address
+            elif address.family == socket.AF_INET6:
+                ipv6 = address
+        if ipv4 is None and ipv6 is None:
+            return text
+
+        # Set icon
+        if self.iface.startswith('eth') or self.iface.startswith('enp'):
+            if 'u' in self.iface:
+                text = ''
+            else:
+                text = ''
+        elif self.iface.startswith('wlan') or self.iface.startswith('wlp'):
+            text = ''
+            cmd = ["iwgetid", self.iface, "--raw"]
+            p = subprocess.run(cmd, stdout=subprocess.PIPE)
+
+            text += ' ' + p.stdout.strip().decode()
+        elif self.iface.startswith('tun') or self.iface.startswith('tap'):
+            text = ''
+        else:
+            text = '?'
+
+        if self.showAddress:
+            if ipv4:
+                netStrFull = '{}/{}'.format(ipv4.address, ipv4.netmask)
+                addr = ipaddress.IPv4Network(netStrFull, strict=False)
+                text += ' {}/{}'.format(ipv4.address, addr.prefixlen)
+            # TODO IPV6
+            # if ipv6:
+            #     text += ' ' + ipv6.address
+
+        if self.showSpeed:
+            recvDiff = self.parent.IO[self.iface].bytes_recv \
+                - self.parent.prevIO[self.iface].bytes_recv
+            sentDiff = self.parent.IO[self.iface].bytes_sent \
+                - self.parent.prevIO[self.iface].bytes_sent
+            recvDiff /= self.parent.dt
+            sentDiff /= self.parent.dt
+            text += ' ↓{}↑{}'.format(humanSize(recvDiff), humanSize(sentDiff))
+
+        if self.showTransfer:
+            text += ' ⇓{}⇑{}'.format(
+                humanSize(self.parent.IO[self.iface].bytes_recv),
+                humanSize(self.parent.IO[self.iface].bytes_sent))
+
+        return text
+
+    def cycleState(self):
+        newState = (self.state + 1) % 4
+        self.changeState(newState)
+
+    def changeState(self, state):
+        assert isinstance(state, int)
+        assert state < 4
+        self.state = state
+        self.showAddress = state >= 1
+        self.showSpeed = state >= 2
+        self.showTransfer = state >= 3
+
+    def __init__(self, iface, parent):
+        Section.__init__(self, theme=self.THEME)
+        self.iface = iface
+        self.parent = parent
+        self.changeState(1)
+        self.refreshData()
+
+
+class NetworkProvider(Section, PeriodicUpdater):
+    def fetchData(self):
+        self.prev = self.last
+        self.prevIO = self.IO
+
+        self.stats = psutil.net_if_stats()
+        self.addrs = psutil.net_if_addrs()
+        self.IO = psutil.net_io_counters(pernic=True)
+        self.ifaces = self.stats.keys()
+
+        self.last = time.perf_counter()
+        self.dt = self.last - self.prev
+
+    def refreshData(self):
+        self.fetchData()
+
+        lastSection = self
+        for iface in sorted(list(self.ifaces)):
+            if iface not in self.sections.keys():
+                section = NetworkProviderSection(iface, self)
+                lastSection.appendAfter(section)
+                self.sections[iface] = section
+            else:
+                section = self.sections[iface]
+            section.refreshData()
+            lastSection = section
+
+    def addParent(self, parent):
+        self.parents.add(parent)
+        self.refreshData()
+
+    def __init__(self):
+        PeriodicUpdater.__init__(self)
+        Section.__init__(self)
+
+        self.sections = dict()
+        self.last = 0
+        self.IO = dict()
+        self.fetchData()
+
+
+class TodoProvider(Section, InotifyUpdater):
+    # TODO OPT/UX Maybe we could get more data from the todoman python module
+    # TODO OPT Specific callback for specific directory
+
+    def updateCalendarList(self):
+        calendars = sorted(os.listdir(self.dir))
+        for calendar in calendars:
+            # If the calendar wasn't in the list
+            if calendar not in self.calendars:
+                self.addPath(os.path.join(self.dir, calendar), refresh=False)
+        self.calendars = calendars
+
+    def __init__(self, dir):
+        """
+        :parm str dir: [main]path value in todoman.conf
+        """
+        InotifyUpdater.__init__(self)
+        Section.__init__(self)
+        self.dir = os.path.realpath(os.path.expanduser(dir))
+        assert os.path.isdir(self.dir)
+
+        self.calendars = []
+        self.addPath(self.dir)
+
+    def getName(self, calendar):
+        path = os.path.join(self.dir, calendar, 'displayname')
+        with open(path, 'r') as f:
+            name = f.read().strip()
+        return name
+
+    def getColor(self, calendar):
+        path = os.path.join(self.dir, calendar, 'color')
+        with open(path, 'r') as f:
+            color = f.read().strip()
+        return color
+
+    def countUndone(self, calendar):
+        cmd = ["todo", "--porcelain", "list", self.getName(calendar)]
+        proc = subprocess.run(cmd, stdout=subprocess.PIPE)
+        data = json.loads(proc.stdout)
+        return len(data)
+
+    def fetcher(self):
+        text = []
+        self.updateCalendarList()
+        for calendar in self.calendars:
+            c = self.countUndone(calendar)
+            if c > 0:
+                color = self.getColor(calendar)
+                text += [' ']
+                text += [{"text": str(c), "fgColor": color}]
+        if len(text):
+            return [''] + text
+        else:
+            return ''
+
+class I3Provider(Section, ThreadedUpdater):
+    # TODO Multi-screen
+
+    THEME_NORMAL = 0
+    THEME_FOCUSED = 2
+    THEME_URGENT = 1
+    THEME_MODE = 1
+
+    def setName(self, section, origName):
+        # TODO Custom names
+        if origName:
+            section.fullName = origName
+        else:
+            section.fullName = ''
+        section.updateText(section.fullName)
+
+    def initialPopulation(self, parent):
+        """
+        Called on init
+        Can't reuse addWorkspace since i3.get_workspaces() gives dict and not
+        ConObjects
+        """
+        workspaces = self.i3.get_workspaces()
+        lastSection = self.modeSection
+        for workspace in workspaces:
+            # if parent.display != workspace["display"]:
+            #     continue
+            theme = self.THEME_FOCUSED if workspace["focused"] \
+                else (self.THEME_URGENT if workspace["urgent"]
+                      else self.THEME_NORMAL)
+            section = Section(theme=theme)
+            parent.addSectionAfter(lastSection, section)
+            self.setName(section, workspace["name"])
+            self.sections[workspace["num"]] = section
+            lastSection = section
+
+    def on_workspace(self, i3, e):
+        print(304, e.change)
+
+    def on_workspace_init(self, i3, e):
+        workspace = e.current
+        i = workspace.num
+        if i in self.sections:
+            section = self.sections[i]
+        else:
+            while i not in self.sections.keys() and i > 0:
+                i -= 1
+            prevSection = self.sections[i] if i != 0 else self.modeSection
+            section = Section()
+            self.sections[workspace.num] = section
+            prevSection.appendAfter(section)
+        self.setName(section, workspace.name)
+
+    def on_workspace_empty(self, i3, e):
+        workspace = e.current
+        section = self.sections[workspace.num]
+        self.setName(section, None)
+
+    def on_workspace_focus(self, i3, e):
+        self.sections[e.current.num].updateTheme(self.THEME_FOCUSED)
+        self.sections[e.old.num].updateTheme(self.THEME_NORMAL)
+
+    def on_workspace_urgent(self, i3, e):
+        self.sections[e.current.num].updateTheme(self.THEME_URGENT)
+
+    def on_workspace_rename(self, i3, e):
+        self.sections[e.current.num].updateText(e.name)
+
+    def on_mode(self, i3, e):
+        if e.change == 'default':
+            self.modeSection.updateText('')
+            for section in self.sections.values():
+                section.updateText(section.fullName)
+        else:
+            self.modeSection.updateText(e.change)
+            for section in self.sections.values():
+                section.updateText('')
+
+    def __init__(self):
+        ThreadedUpdater.__init__(self)
+        Section.__init__(self)
+
+        self.i3 = i3ipc.Connection()
+        self.sections = dict()
+        self.i3.on("workspace::init", self.on_workspace_init)
+        self.i3.on("workspace::focus", self.on_workspace_focus)
+        self.i3.on("workspace::empty", self.on_workspace_empty)
+        self.i3.on("workspace::urgent", self.on_workspace_urgent)
+        self.i3.on("workspace::rename", self.on_workspace_rename)
+        # TODO Un-handled/tested: reload, rename, restored, move
+
+        self.i3.on("mode", self.on_mode)
+
+        self.modeSection = Section(theme=self.THEME_MODE)
+        self.start()
+
+    def addParent(self, parent):
+        self.parents.add(parent)
+        parent.addSection(self.modeSection)
+        self.initialPopulation(parent)
+
+    def loop(self):
+        self.i3.main()

config/lemonbar/updaters.py

@@ -0,0 +1,194 @@
+#!/usr/bin/env python3
+
+import math
+import functools
+import threading
+import pyinotify
+import os
+import time
+
+# TODO Multiple providers for the same section
+
+
+class Updater:
+    @staticmethod
+    def init():
+        PeriodicUpdater.init()
+        InotifyUpdater.init()
+
+    def updateText(self, text):
+        print(text)
+
+    def fetcher(self):
+        return "{} refreshed".format(self)
+
+    def refreshData(self):
+        data = self.fetcher()
+        self.updateText(data)
+
+
+class PeriodicUpdaterThread(threading.Thread):
+    def run(self):
+        counter = 0
+        while True:
+            if PeriodicUpdater.intervalsChanged \
+                    .wait(timeout=PeriodicUpdater.intervalStep):
+                # ↑ sleeps here
+                PeriodicUpdater.intervalsChanged.clear()
+                counter = 0
+                for providerList in PeriodicUpdater.intervals.copy().values():
+                    for provider in providerList.copy():
+                        provider.refreshData()
+            else:
+                counter += PeriodicUpdater.intervalStep
+                counter = counter % PeriodicUpdater.intervalLoop
+                for interval in PeriodicUpdater.intervals.keys():
+                    if counter % interval == 0:
+                        for provider in PeriodicUpdater.intervals[interval]:
+                            provider.refreshData()
+
+
+class PeriodicUpdater(Updater):
+    """
+    Needs to call :func:`PeriodicUpdater.changeInterval` in `__init__`
+    """
+
+    intervals = dict()
+    intervalStep = None
+    intervalLoop = None
+    updateThread = PeriodicUpdaterThread(daemon=True)
+    intervalsChanged = threading.Event()
+
+    @staticmethod
+    def gcds(*args):
+        return functools.reduce(math.gcd, args)
+
+    @staticmethod
+    def lcm(a, b):
+        """Return lowest common multiple."""
+        return a * b // math.gcd(a, b)
+
+    @staticmethod
+    def lcms(*args):
+        """Return lowest common multiple."""
+        return functools.reduce(PeriodicUpdater.lcm, args)
+
+    @staticmethod
+    def updateIntervals():
+        intervalsList = list(PeriodicUpdater.intervals.keys())
+        PeriodicUpdater.intervalStep = PeriodicUpdater.gcds(*intervalsList)
+        PeriodicUpdater.intervalLoop = PeriodicUpdater.lcms(*intervalsList)
+        PeriodicUpdater.intervalsChanged.set()
+
+    @staticmethod
+    def init():
+        PeriodicUpdater.updateThread.start()
+
+    def __init__(self):
+        Updater.__init__(self)
+        self.interval = None
+
+    def changeInterval(self, interval):
+        assert isinstance(interval, int)
+
+        if self.interval is not None:
+            PeriodicUpdater.intervals[self.interval].remove(self)
+
+        self.interval = interval
+
+        if interval not in PeriodicUpdater.intervals:
+            PeriodicUpdater.intervals[interval] = set()
+        PeriodicUpdater.intervals[interval].add(self)
+
+        PeriodicUpdater.updateIntervals()
+
+
+class InotifyUpdaterEventHandler(pyinotify.ProcessEvent):
+
+    def process_default(self, event):
+        # DEBUG
+        # from pprint import pprint
+        # pprint(event.__dict__)
+        # return
+
+        assert event.path in InotifyUpdater.paths
+
+        if 0 in InotifyUpdater.paths[event.path]:
+            for provider in InotifyUpdater.paths[event.path][0]:
+                provider.refreshData()
+
+        if event.name in InotifyUpdater.paths[event.path]:
+            for provider in InotifyUpdater.paths[event.path][event.name]:
+                provider.refreshData()
+
+
+class InotifyUpdater(Updater):
+    """
+    Needs to call :func:`PeriodicUpdater.changeInterval` in `__init__`
+    """
+
+    wm = pyinotify.WatchManager()
+    paths = dict()
+
+    @staticmethod
+    def init():
+        notifier = pyinotify.ThreadedNotifier(InotifyUpdater.wm,
+                                              InotifyUpdaterEventHandler())
+        notifier.start()
+
+    # TODO Mask for folders
+    MASK = pyinotify.IN_CREATE | pyinotify.IN_MODIFY | pyinotify.IN_DELETE
+
+    def addPath(self, path, refresh=True):
+        path = os.path.realpath(os.path.expanduser(path))
+
+        # Detect if file or folder
+        if os.path.isdir(path):
+            self.dirpath = path
+            # 0: Directory watcher
+            self.filename = 0
+        elif os.path.isfile(path):
+            self.dirpath = os.path.dirname(path)
+            self.filename = os.path.basename(path)
+        else:
+            raise FileNotFoundError("No such file or directory: '{}'"
+                                    .format(path))
+
+        # Register watch action
+        if self.dirpath not in InotifyUpdater.paths:
+            InotifyUpdater.paths[self.dirpath] = dict()
+        if self.filename not in InotifyUpdater.paths[self.dirpath]:
+            InotifyUpdater.paths[self.dirpath][self.filename] = set()
+        InotifyUpdater.paths[self.dirpath][self.filename].add(self)
+
+        # Add watch
+        InotifyUpdater.wm.add_watch(self.dirpath, InotifyUpdater.MASK)
+
+        if refresh:
+            self.refreshData()
+
+
+class ThreadedUpdaterThread(threading.Thread):
+    def __init__(self, updater, *args, **kwargs):
+        self.updater = updater
+        threading.Thread.__init__(self, *args, **kwargs)
+
+    def run(self):
+        while True:
+            self.updater.loop()
+
+
+class ThreadedUpdater(Updater):
+    """
+    Must implement loop(), and call start()
+    """
+
+    def __init__(self):
+        self.thread = ThreadedUpdaterThread(self, daemon=True)
+
+    def loop(self):
+        self.refreshData()
+        time.sleep(10)
+
+    def start(self):
+        self.thread.start()

config/lemonbar/x.py

@@ -0,0 +1,10 @@
+#!/usr/bin/env python3
+
+import Xlib.display
+
+dis = Xlib.display.Display()
+
+nb = dis.screen_count()
+
+for s in range(nb):
+    print(s)

config/polybar/config

@@ -76,7 +76,7 @@ enable-ipc = true
 inherit = bar/base
 
 modules-center = mpd
-modules-right =  mail todo vpncheck eth wlan bbswitch xbacklight volume battery shortdate
+modules-right =  cpu memory temperature mail todo vpncheck eth wlan bbswitch xbacklight volume battery shortdate
 
 tray-position = right
 tray-padding = 2

scripts/remcrlf

@@ -2,4 +2,11 @@
 
 # Removes CRLF (^M or \r) from a file
 
-sed -e "s/^M//" $1 -i
+#sed -e "s/^M//" "$1" -i
+
+tmpfile=$(mktemp)
+
+cp "$1" "$tmpfile"
+tr -d '\r' < "$tmpfile" > "$1"
+rm "$tmpfile"
+