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vnc_virtual_display_linker.py
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vnc_virtual_display_linker.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#title :vnc_virtual_display_linker.py
#description :This program creates a second screen and start a VNC sever offering it
#author :
#date :
#version :0.1
#usage :vnc_virtual_display_linker.py
#notes :
#python_version :3.5.1
#=======================================================================
## README !!!
## This script will let you connect an external device
## to your X11 server as a second monitor thorugh VNC
## i.e. use your tablet to extend your desktop
## I have it working using Ubuntu 16.04
## INSTALLATION:
## $ sudo apt install x11vnc
## then create a password!
## $ x11vnc -storepasswd
## If your tablet/phone is supported, you can connect to your
## device via an USB cable and the ADB platform
## but you need to install the proper tools first:
## $ sudo apt install adb android-tools-adb android-tools-fastboot
## Remember to turn on USB debugging on your device
## A good VNC client I found is bVNC Free
# =======================
# CONFIGURATION
# =======================
PC_MONITOR_WIDTH = 1920
PC_MONITOR_LENGTH = 1080
VIRTUAL_MONITOR_WIDTH = 1280
VIRTUAL_MONITOR_LENGTH = 800
# =======================
# Import the modules needed to run the script.
import sys, os, subprocess, re, types
# Main definition - constants
menu_actions = {}
# =======================
# CLASSES
# =======================
class ScreenManager:
def __init__(self):
self.is_landscape = True
self.conf = types.SimpleNamespace()
self.conf.pc_monitor = types.SimpleNamespace(width = PC_MONITOR_WIDTH, length = PC_MONITOR_LENGTH)
self.conf.virtual_monitor = types.SimpleNamespace(width = VIRTUAL_MONITOR_WIDTH, length = VIRTUAL_MONITOR_LENGTH)
self.conf.state = types.SimpleNamespace(is_monitor_created = False, xrandr_mode=types.SimpleNamespace())
self.new_monitor()
def new_monitor(self):
orientation = self.get_orientation()
conf = self.conf
if orientation == 'landscape':
self.set_xrandr_mode_and_x11vnc_clip(conf.virtual_monitor.width, conf.virtual_monitor.length)
else:
self.set_xrandr_mode_and_x11vnc_clip(conf.virtual_monitor.length, conf.virtual_monitor.width)
conf.state.xrandr_mode.alias = self.get_xrandr_mode_alias(conf.state.xrandr_mode.data)
os.system("xrandr --newmode " + conf.state.xrandr_mode.data + " -hsync +vsync")
os.system("xrandr --addmode VIRTUAL1 " + conf.state.xrandr_mode.alias)
os.system("xrandr --output VIRTUAL1 --mode " + conf.state.xrandr_mode.alias)
os.system('xrandr')
self.conf.state.is_monitor_created = True
def delete_monitor(self):
conf = self.conf
os.system("xrandr --output VIRTUAL1 --off")
os.system("xrandr --delmode VIRTUAL1 " + conf.state.xrandr_mode.alias)
os.system('xrandr')
self.conf.state.is_monitor_created = False
def start_vnc(self):
os.system("x11vnc -usepw -nocursorshape -nocursorpos -noxinerama -solid -repeat -forever -clip " + self.conf.state.x11vnc_clip)
def toggle_orientation(self):
self.delete_monitor()
self.is_landscape = False if self.is_landscape else True
self.new_monitor()
def get_orientation(self):
return "landscape" if self.is_landscape else "portrait"
def configure_resolution(self):
os.system('clear')
self.conf.pc_monitor.width = self.configure_resolution_helper('Your monitor resolution width', self.conf.pc_monitor.width)
self.conf.pc_monitor.length = self.configure_resolution_helper('Your monitor resolution length', self.conf.pc_monitor.length)
self.conf.virtual_monitor.width = self.configure_resolution_helper('Virtual monitor resolution width', self.conf.virtual_monitor.width)
self.conf.virtual_monitor.length = self.configure_resolution_helper('Virtual monitor resolution length', self.conf.virtual_monitor.length)
def adb_port_forwarding(self):
os.system('adb reverse tcp:5900 tcp:5900')
# PRIVATE
def get_xrandr_mode_data(self, width, length):
for line in subprocess.check_output("gtf {0} {1} 60".format(width, length), shell=True, universal_newlines=True).split("\n"):
if "Mode" in line:
return re.sub(r'Modeline (.*)-HSync.*', r'\1', line).strip()
def get_xrandr_mode_alias(self, mode_data):
return re.sub(r'.*(".*").*', r'\1', mode_data)
def get_clip_param(self, width, length, pc_monitor_width):
return "{0}x{1}+{2}+0".format(width, length, pc_monitor_width)
def set_xrandr_mode_and_x11vnc_clip(self, width, length):
self.conf.state.xrandr_mode.data = self.get_xrandr_mode_data( width, length)
self.conf.state.x11vnc_clip = self.get_clip_param( width, length, self.conf.pc_monitor.width)
def configure_resolution_helper(self, text, var):
print(text + " [" + str(var) + ']:')
choice = input(" >> ").strip()
return choice if choice != '' else var
# =======================
# MENUS FUNCTIONS
# =======================
# Main menu
def main_menu():
screen_manager = ScreenManager()
while True:
os.system('clear')
print("WELCOME TO THE AUTOMAGICALLY 2ND DISPLAY LINKER")
print("Current status:")
print("\tResolutions:")
print("\tYour monitor:\t" + str(screen_manager.conf.pc_monitor.width) + 'x' + str(screen_manager.conf.pc_monitor.length))
print("\tVirtual:\t" + str(screen_manager.conf.virtual_monitor.width) + 'x' + str(screen_manager.conf.virtual_monitor.length))
print()
print("\tOrientation: " + screen_manager.get_orientation())
print("\tCreated 2nd monitor: " + str(screen_manager.conf.state.is_monitor_created))
print()
print("Please choose an action:")
print("N. New monitor")
print("D. Delete monitor")
print("T. Toggle landscape / portrait")
print("S. Start VNC")
print("C. Configure the resolution of the monitors")
print("A. Activate ADB port forwarding")
print("Q. Quit")
while True:
choice = input(" >> ").lower()
if choice == 'q':
sys.exit()
else:
try:
func = getattr(screen_manager, menu_actions[choice])
func()
print("\n\n\nPress ENTER to continue")
input()
break
except KeyError:
print("Invalid selection, please try again.\n")
# =======================
# MENUS DEFINITIONS
# =======================
# Menu definition
menu_actions = {
'main_menu': main_menu,
's': 'start_vnc',
't': 'toggle_orientation',
'n': 'new_monitor',
'd': 'delete_monitor',
'c': 'configure_resolution',
'a': 'adb_port_forwarding',
}
# =======================
# MAIN PROGRAM
# =======================
# Main Program
if __name__ == "__main__":
# Launch main menu
main_menu()