Lemonbar new!

config/lemonbar/new.py

@@ -0,0 +1,262 @@
+#!/usr/bin/env python3
+
+import enum
+import logging
+import threading
+import time
+
+# TODO Update strategies (periodic, inotify file)
+# TODO Section order (priority system maybe ?)
+# TODO Allow deletion of Bar, BarGroup and Section for screen changes
+# TODO Optimize to use write() calls instead of string concatenation (writing
+# BarGroup strings should be a good compromise)
+
+
+class BarGroupType(enum.Enum):
+    LEFT = 0
+    RIGHT = 1
+    # MID_LEFT = 2
+    # MID_RIGHT = 3
+
+
+class Bar:
+    """
+    One bar for each screen
+    """
+
+    everyone = set()
+    string = ""
+
+    @staticmethod
+    def init():
+        Section.init()
+
+        # Debug
+        Bar()
+
+    def __init__(self):
+        self.screen = 0  # TODO
+        self.groups = dict()
+
+        for groupType in BarGroupType:
+            group = BarGroup(groupType, self)
+            self.groups[groupType] = group
+
+        self.childsChanged = False
+
+        self.everyone.add(self)
+
+    @staticmethod
+    def addSectionAll(section, group, screens=None):
+        """
+        .. note::
+            Add the section before updating it for the first time.
+        """
+        assert isinstance(section, Section)
+        assert isinstance(group, BarGroupType)
+        # TODO screens selection
+        for bar in Bar.everyone:
+            bar.addSection(section, group=group)
+
+    def addSection(self, section, group):
+        assert isinstance(section, Section)
+        assert isinstance(group, BarGroupType)
+        self.groups[group].addSection(section)
+
+    def update(self):
+        if self.childsChanged:
+            self.string = ""
+
+            self.childsChanged = False
+
+    @staticmethod
+    def updateAll():
+
+        for bar in Bar.everyone:
+            bar.update()
+
+        Bar.string = ""
+
+
+class BarGroup:
+    """
+    One for each group of each bar
+    """
+
+    everyone = set()
+
+    def __init__(self, groupType, parent):
+        assert isinstance(groupType, BarGroupType)
+        assert isinstance(parent, Bar)
+
+        self.groupType = groupType
+        self.parent = parent
+
+        self.sections = list()
+        self.string = ''
+        self.form = ''
+
+        #: One of the sections that had their theme or visibility changed
+        self.childsThemeChanged = False
+
+        #: One of the sections that had their text (maybe their size) changed
+        self.childsTextChanged = False
+
+        BarGroup.everyone.add(self)
+
+    def addSection(self, section):
+        self.sections.append(section)
+        section.parents.add(self)
+
+    def update(self):
+        if self.childsThemeChanged:
+            # TODO
+            self.form = ">".join([sec.curText for sec in self.sections
+                                  if sec.visible])
+
+        if self.childsTextChanged or self.childsThemeChanged:
+            print("118")
+            self.string = ">".join([sec.curText for sec in self.sections
+                                    if sec.visible])
+            print("|{0}|".format(self.string))
+
+            self.parent.childsChanged = True
+
+            self.childsThemeChanged = False
+            self.childsTextChanged = False
+
+    @staticmethod
+    def updateAll():
+
+        print("130")
+
+        for group in BarGroup.everyone:
+            group.update()
+
+        Bar.updateAll()
+
+
+class SectionThread(threading.Thread):
+    def run(self):
+        while Section.somethingChanged.wait():
+            Section.updateAll()
+            while len(Section.sizeChanging) > 0:
+                time.sleep(0.1)
+                Section.updateAll()
+
+
+class Section:
+
+    #: Sections that do not have their destination size
+    sizeChanging = set()
+    somethingChanged = threading.Event()
+    updateThread = None
+
+    @staticmethod
+    def init():
+        Section.updateThread = SectionThread(daemon=True)
+        Section.updateThread.start()
+
+    def __init__(self):
+        #: Displayed section
+        #: Note: A section can be empty and displayed!
+        self.visible = False
+
+        #: Displayed text
+        self.curText = ''
+        #: Displayed text size
+        self.curSize = 0
+
+        #: Destination text
+        self.dstText = ''
+        #: Destination size
+        self.dstSize = 0
+
+        #: Groups that have this section
+        self.parents = set()
+
+    def informParentsThemeChanged(self):
+        for parent in self.parents:
+            parent.childsThemeChanged = True
+
+    def informParentsTextChanged(self):
+        for parent in self.parents:
+            parent.childsTextChanged = True
+
+    def updateText(self, text):
+        if len(text):
+            self.dstText = ' {} '.format(text)
+            self.dstSize = len(self.dstText)
+        else:
+            self.dstSize = 0
+
+        if self.curSize == self.dstSize:
+            self.curText = self.dstText
+            self.informParentsTextChanged()
+        else:
+            Section.sizeChanging.add(self)
+        Section.somethingChanged.set()
+
+    def updateVisibility(self, visibility):
+        assert isinstance(visibility, bool)
+
+        self.visible = visibility
+        self.informParentsThemeChanged()
+        Section.somethingChanged.set()
+
+    @staticmethod
+    def fit(text, size):
+        t = len(text)
+        return text[:size] if t >= size else text + " " * (size - t)
+
+    def update(self):
+        # TODO Might profit of a better logic
+        if not self.visible:
+            self.updateVisibility(True)
+            return
+
+        if self.dstSize > self.curSize:
+            self.curSize += 1
+        elif self.dstSize < self.curSize:
+            self.curSize -= 1
+        else:
+            # Visibility toggling must be done one step after curSize = 0
+            if self.dstSize == 0:
+                self.updateVisibility(False)
+            Section.sizeChanging.remove(self)
+            return
+
+        self.curText = Section.fit(self.dstText, self.curSize)
+        self.informParentsTextChanged()
+
+    @staticmethod
+    def updateAll():
+        """
+        Process all sections for text size changes
+        """
+
+        for sizeChanging in Section.sizeChanging.copy():
+            sizeChanging.update()
+            # print("{1:3d} |{0}|".format(sizeChanging.curText, sizeChanging.curSize))
+
+        BarGroup.updateAll()
+
+        Section.somethingChanged.clear()
+
+
+if __name__ == '__main__':
+    Bar.init()
+    sec = Section()
+    sec1 = Section()
+    Bar.addSectionAll(sec, BarGroupType.LEFT)
+    Bar.addSectionAll(sec1, BarGroupType.LEFT)
+
+    sec.updateText("Hello")
+    # sec1.updateText("world!")
+    time.sleep(2)
+    sec.updateText("Salut")
+    # sec1.updateText("le monde !")
+    time.sleep(2)
+    sec.updateText("")
+    # sec1.updateText("")
+    time.sleep(2)

config/lemonbar/pip.py

@@ -15,7 +15,10 @@ import difflib
 # Constants
 FONT = "DejaVu Sans Mono for Powerline"
 
-thm = ['#002b36','#dc322f','#859900','#b58900','#268bd2','#6c71c4','#2aa198','#93a1a1','#657b83','#dc322f','#859900','#b58900','#268bd2','#6c71c4','#2aa198','#fdf6e3']
+# TODO Update to be in sync with base16
+thm = ['#002b36', '#dc322f', '#859900', '#b58900', '#268bd2', '#6c71c4',
+       '#2aa198', '#93a1a1', '#657b83', '#dc322f', '#859900', '#b58900',
+       '#268bd2', '#6c71c4', '#2aa198', '#fdf6e3']
 fg = '#93a1a1'
 bg = '#002b36'
 
@@ -29,30 +32,36 @@ THEMES = {
     '5': (thm[0], thm[13]),
     '6': (thm[0], thm[14]),
     '7': (thm[0], thm[15]),
-        }
+}
 
 # Utils
 
+
 def fitText(text, size):
     """
     Add spaces or cut a string to be `size` characters long
     """
     if size > 0:
-        if len(text) >= size:
+        t = len(text)
+        if t >= size:
             return text[:size]
         else:
-            return ('%' + str(size) + 's') % text
+            diff = size - t
+            return text + " " * diff
     else:
         return ''
 
+
 def fgColor(theme):
     global THEMES
     return THEMES[theme][0]
 
+
 def bgColor(theme):
     global THEMES
     return THEMES[theme][1]
 
+
 class Section:
     def __init__(self, theme='DEFAULT'):
         self.text = ''
@@ -108,12 +117,15 @@ class Section:
                     s += ''
         return s
 
+
 # Section definition
 sTime = Section('3')
 
 hostname = os.environ['HOSTNAME'].split('.')[0]
 sHost = Section('2')
-sHost.update(os.environ['USER'] + '@' + hostname.split('-')[-1] if '-' in hostname else hostname)
+sHost.update(
+    os.environ['USER'] + '@' + hostname.split('-')[-1]
+    if '-' in hostname else hostname)
 
 
 # Groups definition
@@ -123,6 +135,7 @@ gRight = [sTime, sHost]
 # Bar handling
 bar = subprocess.Popen(['lemonbar', '-f', FONT, '-b'], stdin=subprocess.PIPE)
 
+
 def updateBar():
     global timeLastUpdate, timeUpdate
     global gLeft, gRight
@@ -131,37 +144,55 @@ def updateBar():
     text = ''
     for oi in range(len(outputs)):
         output = outputs[oi]
-        gLeftFiltered = list(filter(lambda s: s.visible and (not s.output or s.output == output.name), gLeft))
+        gLeftFiltered = list(
+            filter(
+                lambda s: s.visible and (
+                    not s.output or s.output == output.name),
+                gLeft))
         tLeft = ''
         l = len(gLeftFiltered)
         for gi in range(l):
             g = gLeftFiltered[gi]
-            nextTheme = gLeftFiltered[gi + 1].theme if gi + 1 < l else 'CENTER' # Next visible section for transition
+            # Next visible section for transition
+            nextTheme = gLeftFiltered[gi + 1].theme if gi + 1 < l else 'CENTER'
             tLeft = tLeft + g.draw(True, nextTheme)
 
         tRight = ''
         for gi in range(len(gRight)):
             g = gRight[gi]
             nextTheme = 'CENTER'
-            for gn in gRight[gi+1:]:
+            for gn in gRight[gi + 1:]:
                 if gn.visible:
                     nextTheme = gn.theme
                     break
             tRight = g.draw(False, nextTheme) + tRight
-        text += '%{l}' + tLeft + '%{r}' + tRight + '%{B' + bgColor('CENTER') + '}' + '%{S' + str(oi + 1) + '}'
+        text += '%{l}' + tLeft + '%{r}' + tRight + \
+            '%{B' + bgColor('CENTER') + '}' + '%{S' + str(oi + 1) + '}'
 
     bar.stdin.write(bytes(text + '\n', 'utf-8'))
     bar.stdin.flush()
 
+
 # Values
 i3 = i3ipc.Connection()
 outputs = []
 
+
 def on_output():
     global outputs
-    outputs = sorted(sorted(list(filter(lambda o: o.active, i3.get_outputs())), key=lambda o: o.rect.y), key=lambda o: o.rect.x)
+    outputs = sorted(
+        sorted(
+            list(
+                filter(
+                    lambda o: o.active,
+                    i3.get_outputs())),
+            key=lambda o: o.rect.y),
+        key=lambda o: o.rect.x)
+
+
 on_output()
 
+
 def on_workspace_focus():
     global i3
     global gLeft
@@ -170,6 +201,7 @@ def on_workspace_focus():
     sNames = [s.name for s in gLeft]
 
     newGLeft = []
+
     def actuate(section, workspace):
         if workspace:
             section.name = workspace.name
@@ -189,11 +221,12 @@ def on_workspace_focus():
             section.update('')
             section.theme = '6'
 
-    for tag, i, j, k, l in difflib.SequenceMatcher(None, sNames, wNames).get_opcodes():
+    for tag, i, j, k, l in difflib.SequenceMatcher(
+            None, sNames, wNames).get_opcodes():
         if tag == 'equal':  # If the workspaces didn't changed
-            for a in range(j-i):
+            for a in range(j - i):
-                workspace = workspaces[k+a]
+                workspace = workspaces[k + a]
-                section = gLeft[i+a]
+                section = gLeft[i + a]
                 actuate(section, workspace)
                 newGLeft.append(section)
         if tag in ('delete', 'replace'):  # If the workspaces were removed
@@ -211,6 +244,8 @@ def on_workspace_focus():
     gLeft = newGLeft
 
     updateBar()
+
+
 on_workspace_focus()
 
 
@@ -230,20 +265,24 @@ def i3events(i3childPipe):
 
     i3.main()
 
+
 i3parentPipe, i3childPipe = multiprocessing.Pipe()
 i3process = multiprocessing.Process(target=i3events, args=(i3childPipe,))
 i3process.start()
 
+
 def updateValues():
     # Time
     now = datetime.datetime.now()
     sTime.update(now.strftime('%x %X'))
 
+
 def updateAnimation():
     for s in set(gLeft + gRight):
         s.updateSize()
     updateBar()
 
+
 lastUpdate = 0
 while True:
     now = time.time()
@@ -262,5 +301,3 @@ while True:
         lastUpdate = now
 
     time.sleep(0.05)
-
-