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#!/usr/bin/env python3.7
from os import system
from Xlib import X, XK
from Xlib.display import Display
display = Display()
root = display.screen().root
colormap = display.screen().default_colormap
currently_focused = None
NET_WM_NAME = display.intern_atom('_NET_WM_NAME')
NET_ACTIVE_WINDOW = display.intern_atom('_NET_ACTIVE_WINDOW')
# Listen for window changes
root.change_attributes(event_mask=
X.PropertyChangeMask | X.FocusChangeMask | X.SubstructureNotifyMask | X.PointerMotionMask)
# Keyboard listener
root.grab_key(X.AnyKey, X.Mod4Mask, 1, X.GrabModeAsync, X.GrabModeAsync)
# Button (Mouse) listeners
root.grab_button(X.AnyButton, X.Mod4Mask, 1,
X.ButtonPressMask | X.ButtonReleaseMask | X.PointerMotionMask,
X.GrabModeAsync, X.GrabModeAsync, X.NONE, X.NONE)
start = None
def is_key(key_name):
return event.type == X.KeyPress and event.detail == display.keysym_to_keycode(XK.string_to_keysym(key_name))
def window_focused():
return hasattr(event, "child") and event.child != X.NONE or root.query_pointer().child != 0
def set_border(child, color):
if child is not None and child is not X.NONE:
border_color = colormap.alloc_named_color(color).pixel
child.configure(border_width=1)
child.change_attributes(None, border_pixel=border_color)
def update_windows():
# Only update if the event has relevance (focus/title change)
# if event.type != X.PropertyNotify:
# return
global currently_focused # TODO: Convert to class-scheme
new_focus = False
# Set focused window "in focus"
if window_focused():
if hasattr(event, "child") and event.child != currently_focused:
new_focus = True
currently_focused = event.child
event.child.configure(stack_mode=X.Above)
elif root.query_pointer().child != currently_focused:
new_focus = True
currently_focused = root.query_pointer().child
root.query_pointer().child.configure(stack_mode=X.Above)
# Set all windows to un-focused borders
if event.type == X.FocusOut or new_focus:
for child in root.query_tree().children:
print("RESET FOCUS")
set_border(child, "#000")
# Set focused window border
if event.type == X.FocusIn or new_focus:
child = root.query_pointer().child
currently_focused = child
if child != 0:
print("FOCUS")
child.configure(stack_mode=X.Above)
set_border(child, "#fff")
display.sync()
# Check for actions until exit
while 1:
event = display.next_event()
update_windows()
# Resize window (MOD + right click)
if event.type == X.ButtonPress and event.child != X.NONE:
attribute = event.child.get_geometry()
start = event
# Move window (MOD + left click)
elif event.type == X.MotionNotify and start:
xDiff = event.root_x - start.root_x
yDiff = event.root_y - start.root_y
start.child.configure(
x=attribute.x + (start.detail == 1 and xDiff or 0),
y=attribute.y + (start.detail == 1 and yDiff or 0),
width=max(1, attribute.width + (start.detail == 3 and xDiff or 0)),
height=max(1, attribute.height + (start.detail == 3 and yDiff or 0))
)
# Switch between windows (MOD + Tab)
if is_key("tab") and window_focused():
event.child.configure(stack_mode=X.Below)
# Close window (MOD + Q)
elif is_key("q") and window_focused():
event.child.destroy()
# Open terminal (MOD + Enter) // X11's "enter" keysym is 0, but it's 36
elif event.type == X.KeyPress and event.detail == 36:
system("st &")
# Open dmenu (MOD + D)
elif is_key("d"):
system("dmenu_run &")
# Exit window manager (MOD + C)
elif is_key("c"):
display.close()
elif event.type == X.ButtonRelease:
start = None
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