X-Git-Url: https://git.ralfj.de/lilass.git/blobdiff_plain/7fcfc9aa2427b253bc395d72e111e996382f2492..ffc98865eecc0de34e0a33d7d83461ed9d4ee29b:/dsl.py?ds=sidebyside diff --git a/dsl.py b/dsl.py index 47c906e..41db08c 100755 --- a/dsl.py +++ b/dsl.py @@ -1,124 +1,109 @@ -#!/usr/bin/python +#!/usr/bin/python3 # DSL - easy Display Setup for Laptops +# Copyright (C) 2012-2015 Ralf Jung +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. -import os, sys, re, subprocess -from PyQt4 import QtGui -from selector_window import PositionSelection -app = QtGui.QApplication(sys.argv) +import argparse, sys, os, re, subprocess +from enum import Enum +import gui, screen +frontend = gui.getFrontend("cli") # the fallback, until we got a proper frontend. This is guaranteed to be available. -# Load a section-less config file: maps parameter names to space-separated lists of strings (with shell quotation) -def loadConfigFile(file): - import shlex - # read config file - linenr = 0 - with open(file) as file: - result = {} - for line in file: - linenr += 1 - line = line.strip() - if not len(line) or line.startswith("#"): continue # skip empty and comment lines - try: - # parse line - pos = line.index("=") # will raise exception when substring is not found - curKey = line[:pos].strip() - value = line[pos+1:] - result[curKey] = shlex.split(value) - except Exception: - raise Exception("Invalid config, line %d: Error parsing line (quoting issue?)" % linenr) - # add some convencience get functions - return result - -def getXrandrInformation(): - p = subprocess.Popen(["xrandr", "-q"], stdout=subprocess.PIPE) - connectors = {} # map of connector names to a list of resolutions - connector = None # current connector - for line in p.stdout: - # new connector? - m = re.search(r'^([\w]+) connected ', line) - if m is not None: - connector = m.groups()[0] - assert connector not in connectors - connectors[connector] = [] - continue - # new resolution? - m = re.search(r'^ ([\d]+)x([\d]+) +', line) - if m is not None: - assert connector is not None - connectors[connector].append((int(m.groups()[0]), int(m.groups()[1]))) - p.communicate() - if p.returncode != 0: raise Exception("Querying xrandr for data failed") - return connectors +# for auto-config: common names of internal connectors +commonInternalConnectorPrefixes = ['LVDS', 'eDP'] +commonInternalConnectorSuffices = ['', '0', '1', '-0', '-1'] +def commonInternalConnectorNames(): + for prefix in commonInternalConnectorPrefixes: + for suffix in commonInternalConnectorSuffices: + yield prefix+suffix -def res2xrandr(res): - (w, h) = res - return str(w)+'x'+str(h) -def res2user(res): - (w, h) = res - # get ratio - ratio = int(round(16.0*h/w)) - if ratio == 12: # 16:12 = 4:3 - strRatio = '4:3' - elif ratio == 13: # 16:12.8 = 5:4 - strRatio = '5:4' - else: # let's just hope this will never be 14 or more... - strRatio = '16:%d' % ratio - return '%dx%d (%s)' %(w, h, strRatio) +# Load a section-less config file: maps parameter names to space-separated lists of strings (with shell quotation) +def loadConfigFile(filename): + import shlex + result = {} + if not os.path.exists(filename): + return result # no config file + # read config file + linenr = 0 + with open(filename) as f: + for line in f: + linenr += 1 + line = line.strip() + if not len(line) or line.startswith("#"): continue # skip empty and comment lines + try: + # parse line + pos = line.index("=") # will raise exception when substring is not found + curKey = line[:pos].strip() + result[curKey] = shlex.split(line[pos+1:]) # shlex.split also strips + except Exception: + raise Exception("Invalid config, line %d: Error parsing line (may be a quoting issue)." % linenr) + # add some convencience get functions + return result -def findAvailableConnector(tryConnectors, availableConnectors): - for connector in tryConnectors: - if connector in availableConnectors: return connector - return None -# load options -config = loadConfigFile(os.getenv('HOME') + '/.dsl.conf') -if len(config['internalConnector']) != 1: - raise Exception("You must specify exactly one internal connector") -if len(config['externalConnectors']) < 1: - raise Exception("You must specify at least one external connector") -# use options -internalConnector = config['internalConnector'][0] -externalConnectors = config['externalConnectors'] -connectors = getXrandrInformation() -usedExternalConnector = findAvailableConnector(externalConnectors, connectors) # *the* external connector which is actually used +# Make sure the backlight is turned on +def turnOnBacklight(): + try: + backlight = float(subprocess.check_output(["xbacklight", "-get"]).strip()) + if backlight == 0: # it's completely turned off, we better enable it + subprocess.check_call(["xbacklight", "-set", "100"]) + except FileNotFoundError: + print("xbacklight has not been found, unable to turn your laptop backlight on.") + except subprocess.CalledProcessError: + print("xbacklight returned an error while attempting to turn your laptop backlight on.") -# default: screen off -args = {} # maps connector names to xrand arguments -for c in externalConnectors+[internalConnector]: - args[c] = ["--off"] -# Check what to do -if usedExternalConnector is not None: # there's an external screen connected, we need to ask what to do - internalResolutions = connectors[internalConnector] - externalResolutions = connectors[usedExternalConnector] - extPosition = PositionSelection(usedExternalConnector, map(res2user, internalResolutions), map(res2user, externalResolutions)) - extPosition.exec_() - if not extPosition.result(): sys.exit(1) # the user canceled - extResolution = res2xrandr(externalResolutions[extPosition.extResolutions.currentIndex()]) - intResolution = res2xrandr(internalResolutions[extPosition.intResolutions.currentIndex()]) - # build command-line - args[usedExternalConnector] = ["--mode", extResolution] # set external screen to desired resolution - if extPosition.extOnly.isChecked(): - args[usedExternalConnector] += ["--primary"] - else: - # there are two screens - args[internalConnector] = ["--mode", intResolution] # set internal screen to desired resolution - # set position - if extPosition.posLeft.isChecked(): - args[usedExternalConnector] += ["--left-of", internalConnector] - else: - args[usedExternalConnector] += ["--right-of", internalConnector] - # set primary screen - if extPosition.primExt.isChecked(): - args[usedExternalConnector] += ["--primary"] - else: - args[internalConnector] += ["--primary"] -else: - # use first resolution - args[internalConnector] = ["--mode", res2xrandr(connectors[internalConnector][0]), "--primary"] -# and do it -call = ["xrandr"] -for name in args: - call += ["--output", name] + args[name] -print "Call that will be made:",call -subprocess.check_call(call) +# if we run top-level +if __name__ == "__main__": + # parse command-line arguments + parser = argparse.ArgumentParser(description='easy Display Setup for Laptops') + parser.add_argument("-f", "--frontend", + dest="frontend", + help="The frontend to be used for user interaction") + parser.add_argument("-r", "--relative-position", + dest="rel_position", choices=list(map(str.lower, screen.RelativeScreenPosition.__members__.keys())), + help="Position of external screen relative to internal one") + parser.add_argument("-i", "--internal-only", + dest="internal_only", action='store_true', + help="Enable internal screen, disable all the others (as if no external screen was connected") + cmdArgs = parser.parse_args() + + # load frontend early (for error mssages) + frontend = gui.getFrontend(cmdArgs.frontend) + try: + # see what situation we are in + situation = screen.ScreenSituation(commonInternalConnectorNames()) + + # construct the ScreenSetup + setup = None + if situation.externalResolutions() is not None: + setup = frontend.setup(situation) + if setup is None: sys.exit(1) # the user canceled + else: + # use first resolution of internal connector + setup = ScreenSetup(intResolution = situation.internalResolutions()[0], extResolution = None) + + # call xrandr + xrandrCall = situation.forXrandr(setup) + print("Call that will be made:",xrandrCall) + subprocess.check_call(xrandrCall) + + # make sure the internal screen is really, *really* turned on if there is no external screen + if setup.extResolution is None: + turnOnBacklight() + except Exception as e: + frontend.error(str(e)) + raise