bumblebee-status/bumblebee_status/modules/core/xrandr.py

124 lines
4 KiB
Python

# pylint: disable=C0111,R0903
"""Shows a widget for each connected screen and allows the user to enable/disable screens.
Parameters:
* xrandr.overwrite_i3config: If set to 'true', this module assembles a new i3 config
every time a screen is enabled or disabled by taking the file '~/.config/i3/config.template'
and appending a file '~/.config/i3/config.<screen name>' for every screen.
* xrandr.autoupdate: If set to 'false', does *not* invoke xrandr automatically. Instead, the
module will only refresh when displays are enabled or disabled (defaults to true)
* xrandr.exclude: Comma-separated list of display name prefixes to exclude
Requires the following python module:
* (optional) i3 - if present, the need for updating the widget list is auto-detected
Requires the following executable:
* xrandr
"""
import re
import sys
import core.module
import core.input
import core.decorators
from bumblebee_status.discover import utility
import util.cli
import util.format
try:
import i3
except ModuleNotFoundError:
pass
class Module(core.module.Module):
@core.decorators.every(seconds=5) # takes up to 5s to detect a new screen
def __init__(self, config, theme):
super().__init__(config, theme, [])
self._exclude = tuple(filter(len, self.parameter("exclude", "").split(",")))
self._active_displays = []
self._autoupdate = util.format.asbool(self.parameter("autoupdate", True))
self._needs_update = True
try:
i3.Subscription(self._output_update, "output")
except NameError:
pass
def _output_update(self, event, data, _):
self._needs_update = True
def update(self):
if not self._autoupdate and not self._needs_update:
return
self.clear_widgets()
self._active_displays.clear()
self._needs_update = False
for line in util.cli.execute("xrandr -q").split("\n"):
if " connected" not in line:
continue
display = line.split(" ", 2)[0]
resolution = re.search(r"\d+x\d+\+(\d+)\+\d+", line)
if resolution:
self._active_displays.append(display)
if display.startswith(self._exclude):
continue
widget = self.widget(display)
if not widget:
widget = self.add_widget(full_text=display, name=display)
core.input.register(widget, button=1, cmd=self._toggle)
core.input.register(widget, button=3, cmd=self._toggle)
widget.set("state", "on" if resolution else "off")
widget.set("pos", int(resolution.group(1)) if resolution else sys.maxsize)
if not self._autoupdate:
widget = self.add_widget(full_text="")
widget.set("state", "refresh")
core.input.register(widget, button=1, cmd=self._refresh)
def state(self, widget):
return widget.get("state", "off")
def _refresh(self, event):
self._needs_update = True
def _toggle(self, event):
if util.format.asbool(self.parameter("overwrite_i3config", False)):
toggle_cmd = utility("toggle-display.sh")
else:
toggle_cmd = "xrandr"
widget = self.widget(widget_id=event["instance"])
if widget.get("state") == "on":
if len(self._active_displays) > 1:
util.cli.execute("{} --output {} --off".format(toggle_cmd, widget.name))
elif not self._active_displays:
util.cli.execute("{} --output {} --auto".format(toggle_cmd, widget.name))
else:
if event["button"] == core.input.LEFT_MOUSE:
side, neighbor = "left", self._active_displays[0]
else:
side, neighbor = "right", self._active_displays[-1]
util.cli.execute(
"{} --output {} --auto --{}-of {}".format(
toggle_cmd, widget.name, side, neighbor,
)
)
self._refresh(event)
# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4