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#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
import subprocess
from enums import DisplayMode
class DisplayService:
current_display_mode = DisplayMode.MODE_ONLY_ORI
def switch_display(self, target_mode):
XRANDR_STATUS = "xrandr -q"
handle = subprocess.Popen(XRANDR_STATUS, shell=True, stdout=subprocess.PIPE)
handle.wait()
res = handle.communicate()[0]
res = res.decode()
lines = res.splitlines()
monitors = []
modes = {}
modes_one = []
current_monitor = None
flag = False
for line in lines:
if(line.find(" connected") != -1):
monitor_name = line[: line.find(" ")]
monitors.append(monitor_name)
# find monitor again，add to dict
if(flag == True):
modes[current_monitor] = modes_one
current_monitor = monitor_name
flag = True
modes_one = []
else:
if(flag == True and line.startswith(" ") == True):
modes_one.append(line.strip().split(" ")[0])
# add last monitor's mode
modes[current_monitor] = modes_one
print("found monitors :", monitors)
if(len(monitors) < 2):
handle = subprocess.Popen("xrandr --output " + monitors[0] + " --auto", shell=True, stdout=subprocess.PIPE)
handle.wait()
self.current_display_mode = DisplayMode.MODE_ONLY_ORI
print("only one monitor, do nothing.")
return (self.current_display_mode, False)
else:
modes_0 = modes[monitors[0]]
modes_1 = modes[monitors[1]]
MAX_MODE_MONITOR_0 = modes_0[0]
MAX_MODE_MONITOR_1 = modes_1[0]
BEST_CLONE_MODE = None
is_find = False
for mode_0 in modes_0:
for mode_1 in modes_1:
if(mode_0 == mode_1):
BEST_CLONE_MODE = mode_0
is_find = True
break
if(is_find == True):
break
print("max display mode :", MAX_MODE_MONITOR_0, ",", MAX_MODE_MONITOR_1)
print("best clone mode :", BEST_CLONE_MODE)
XRANDR_ORIONLY = "xrandr --output " + monitors[0] + " --auto --output " + monitors[1] + " --off"
XRANDR_CLONE = "xrandr --output " + monitors[0] + " --mode " + BEST_CLONE_MODE + " --output " + monitors[1] + " --mode " + BEST_CLONE_MODE + " --same-as " + monitors[0]
XRANDR_EXTEND = "xrandr --output " + monitors[0] + " --auto --output " + monitors[1] + " --right-of " + monitors[0] + " --auto"
XRANDR_OUTONLY = "xrandr --output " + monitors[0] + " --off --output " + monitors[1] + " --auto"
try:
if(target_mode == DisplayMode.MODE_ONLY_ORI):
handle = subprocess.Popen(XRANDR_ORIONLY, shell=True, stdout=subprocess.PIPE)
handle.wait()
self.current_display_mode = DisplayMode.MODE_ONLY_ORI
elif(target_mode == DisplayMode.MODE_CLONE):
handle = subprocess.Popen(XRANDR_CLONE, shell=True, stdout=subprocess.PIPE)
handle.wait()
self.current_display_mode = DisplayMode.MODE_CLONE
elif(target_mode == DisplayMode.MODE_EXTEND):
handle = subprocess.Popen(XRANDR_EXTEND, shell=True, stdout=subprocess.PIPE)
handle.wait()
handle = subprocess.Popen(XRANDR_EXTEND, shell=True, stdout=subprocess.PIPE)
handle.wait()
self.current_display_mode = DisplayMode.MODE_EXTEND
elif(target_mode == DisplayMode.MODE_ONLY_OUT):
handle = subprocess.Popen(XRANDR_OUTONLY, shell=True, stdout=subprocess.PIPE)
handle.wait()
self.current_display_mode = DisplayMode.MODE_ONLY_OUT
return (self.current_display_mode, True)
except Exception as e:
print(e)
return (self.current_display_mode, False)
def main():
# app = QApplication(sys.argv)
w = DisplayService()
w.switch_display(1)
# sys.exit(app.exec_())
if __name__ == '__main__':
main()
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