chezmoi/dot_config/sway/scripts/executable_swayfader.py

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from i3ipc import Connection, Event
from threading import Thread
from time import sleep
FRAME_T = 0.01 # time taken between each frame of fade
# transparency values
CON_AC = 1 # active window
CON_INAC = 0.5 # inactive window
FLOAT_AC = 1 # active floating window
FLOAT_INAC = 0.5 # inactive floating window
BOT_INAC = 0.9 # bottom window
# fade durations
FADE_TIME = 0.2
ALT_FADE_TIME = 0.1
CON_OUT = FADE_TIME # window fading out
CON_IN = 0.15 # window fading in
FLOAT_OUT = ALT_FADE_TIME # floating window fading out
FLOAT_IN = ALT_FADE_TIME # floating window fading in
BOT_OUT = ALT_FADE_TIME # bottom window fading out
BOT_IN = ALT_FADE_TIME # bottom window fading in
BOT_SWITCH_IN = FADE_TIME # window becoming bottom window
BOT_SWITCH_OUT = FADE_TIME # bottom window becoming window
FLOAT_BOT_OUT = FADE_TIME # floating window fading out from bottom
FLOAT_BOT_IN = FADE_TIME # floating window fading in from bottom
class Fader:
def __init__(self):
self.floating_windows = []
self.fader_running = False
self.fade_queue = []
self.fade_data = {}
self.bottom_win = None
self.old_win = None
self.active_win = None
ipc = Connection()
ipc.on(Event.WINDOW_FOCUS, self.on_window_focus)
ipc.on(Event.WINDOW_NEW, self.on_window_new)
ipc.on(Event.WINDOW_FLOATING, self.on_window_floating)
for win in ipc.get_tree():
if win.type == "floating_con":
self.floating_windows.append(win.id)
if win.focused:
change_opacity(win, FLOAT_AC)
self.active_win = win
else:
change_opacity(win, FLOAT_INAC)
elif win.type == "con":
if win.focused:
self.active_win = win
change_opacity(win, CON_AC)
else:
change_opacity(win, CON_INAC)
ipc.main()
def add_fade(self, win, start, target, duration):
if not duration:
if win.id in self.fade_queue:
self.fade_queue.remove(win.id)
del self.fade_data[win.id]
change_opacity(win, target)
return
if win.id in self.fade_queue:
f = self.fade_data[win.id]
change = (FRAME_T / duration) * (target - f["opacity"])
f["change"] = change
f["target"] = target
return
change_opacity(win, start)
change = (FRAME_T / duration) * (target - start)
fade_data = {"opacity": start, "change": change, "target": target, "win": win}
self.fade_queue.append(win.id)
self.fade_data[win.id] = fade_data
def start_fader(self):
if not self.fader_running:
self.fader_running = True
Thread(target=self.fader).start()
def fader(self):
while self.fade_queue:
for win_id in self.fade_queue.copy():
try:
f = self.fade_data[win_id]
except KeyError:
continue
f["opacity"] += f["change"]
finished = False
if f["change"] > 0:
if f["opacity"] >= f["target"]:
finished = True
elif f["opacity"] <= f["target"]:
finished = True
if finished:
change_opacity(f["win"], f["target"])
try:
self.fade_queue.remove(win_id)
del self.fade_data[win_id]
except (KeyError, ValueError):
continue
else:
change_opacity(f["win"], f["opacity"])
sleep(FRAME_T)
self.fader_running = False
def on_window_focus(self, ipc, e):
if self.active_win.id == e.container.id:
return
if self.active_win.type == "con":
if e.container.type == "con":
self.add_fade(
e.container, CON_INAC,
CON_AC, CON_IN)
self.add_fade(
self.active_win, CON_AC,
CON_INAC, CON_OUT)
else:
self.add_fade(
e.container, FLOAT_INAC,
FLOAT_AC, FLOAT_IN)
self.add_fade(
self.active_win, CON_AC,
BOT_INAC, BOT_OUT)
self.bottom_win = self.active_win
else:
if e.container.type == "con":
self.add_fade(
self.active_win, FLOAT_AC,
FLOAT_INAC, FLOAT_BOT_OUT)
if not self.bottom_win:
self.add_fade(
e.container, CON_INAC,
CON_AC, CON_IN)
elif e.container.id != self.bottom_win.id:
self.add_fade(
self.bottom_win, BOT_INAC,
CON_INAC, BOT_SWITCH_OUT)
self.add_fade(
e.container, CON_INAC,
CON_AC, BOT_SWITCH_IN)
self.bottom_win = e.container
else:
self.add_fade(
self.bottom_win, BOT_INAC,
CON_AC, BOT_IN)
else:
self.add_fade(
self.active_win, FLOAT_AC,
FLOAT_INAC, FLOAT_OUT)
self.add_fade(
e.container, FLOAT_INAC,
FLOAT_AC, FLOAT_IN)
self.start_fader()
self.active_win = e.container
def on_window_new(self, ipc, e):
if self.active_win:
if self.active_win.type == "con":
change_opacity(self.active_win, CON_INAC)
else:
change_opacity(self.active_win, FLOAT_INAC)
if self.bottom_win:
change_opacity(self.bottom_win, CON_INAC)
elif self.active_win and self.active_win.type == "con":
self.bottom_win = self.active_win
change_opacity(self.bottom_win, CON_INAC)
change_opacity(e.container, CON_AC)
self.old_win = self.active_win
self.active_win = e.container
def on_window_floating(self, ipc, e):
c_id = e.container.id
if c_id not in self.floating_windows:
self.floating_windows.append(c_id)
if self.active_win.id != e.container.id:
change_opacity(e.container, FLOAT_INAC)
else:
if self.old_win and self.bottom_win:
if self.old_win.type == "con":
self.bottom_win = self.old_win
change_opacity(self.bottom_win, BOT_INAC)
change_opacity(e.container, FLOAT_AC)
else:
self.floating_windows.remove(c_id)
if self.active_win.id != e.container.id:
change_opacity(e.container, CON_INAC)
else:
if self.old_win and self.old_win.type == "con":
change_opacity(self.old_win, CON_INAC)
change_opacity(self.active_win, CON_AC)
self.active_win = e.container
def change_opacity(win, trans):
win.command("opacity " + str(trans))
if __name__ == "__main__":
Fader()