X-Git-Url: https://git.ralfj.de/lilass.git/blobdiff_plain/1435ea5976a4c64c80ab9f7ea3e46cc632e11812..57b3b9f912ab6271173a71028ccedbe9cf76b9ac:/dsl.py diff --git a/dsl.py b/dsl.py index d8d88c9..02345f9 100755 --- a/dsl.py +++ b/dsl.py @@ -1,93 +1,150 @@ -#!/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 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. -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 -def res2xrandr(res): - (w, h) = res - return str(w)+'x'+str(h) +# 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 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) -# Check screen setup -internalName = "LVDS1" -externalNames = ["HDMI1", "DP1", "VGA1"] -connectors = getXrandrInformation() -internalResolutions = connectors[internalName] # there must be a screen assoicated to the internal connector -externalName = None # *the* external connector which is actually used -externalResolutions = None # resultions of the external connector -args = {} # maps connector names to xrand arguments +# 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 -# look for enabled external screen, disable all the others -for name in externalNames: - if externalResolutions is None and name in connectors: - externalName = name - externalResolutions = connectors[name] - else: - args[name] = ["--off"] -# Check what to do -if externalName is not None: # we need to ask what to do - extPosition = PositionSelection(externalName, 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[externalName] = ["--mode", extResolution] # we definitely want an external screen - if extPosition.extOnly.isChecked(): - args[internalName] = ["--off"] - args[externalName] += ["--primary"] - else: - # there are two screens - args[internalName] = ["--mode", intResolution] - if extPosition.posLeft.isChecked(): - args[externalName] += ["--left-of", internalName] - else: - args[externalName] += ["--right-of", internalName] - if extPosition.primExt.isChecked(): - args[externalName] += ["--primary"] - else: - args[internalName] += ["--primary"] -else: - args[internalName] = ["--mode", res2xrandr(internalResolutions[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) +# 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.") + + +# return the current sceen situation, using the configuration to control connecor detection +def situationByConfig(config): + # internal connectors + if 'internalConnector' in config: + if len(config['internalConnector']) != 1: + raise Exception("You must specify exactly one internal connector.") + internalConnectors = config['internalConnector'] + else: + internalConnectors = commonInternalConnectorNames() + # run! + return screen.ScreenSituation(internalConnectors, config.get('externalConnectors')) + + +# if we run top-level +if __name__ == "__main__": + try: + # how do we filter the RelativeScreenPosition for the CLI? + relPosFilter = str.lower + + # 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(relPosFilter, screen.RelativeScreenPosition.__members__.keys())), + help="Set the position of external screen relative to internal one.") + parser.add_argument("-e", "--external-only", + dest="external_only", action='store_true', + help="If an external screen is connected, disable all the others.") + parser.add_argument("-i", "--internal-only", + dest="internal_only", action='store_true', + help="Enable internal screen, disable all the others.") + cmdArgs = parser.parse_args() + + # load frontend early (for error mssages) + frontend = gui.getFrontend(cmdArgs.frontend) + + # load configuration + config = loadConfigFile(os.getenv('HOME') + '/.dsl.conf') + + # see what situation we are in + situation = situationByConfig(config) + + # construct the ScreenSetup + setup = None + if not cmdArgs.internal_only and situation.externalResolutions() is not None: + # there's an external screen connected that we may want to use + if cmdArgs.external_only: + setup = screen.ScreenSetup(intResolution = None, extResolution = situation.externalResolutions()[0]) + elif cmdArgs.rel_position is not None: + # construct automatically, based on CLI arguments + # first, figure out the desired RelativeScreenPosition... waht a bad hack... + relPos = list(filter(lambda relPosItem: relPosFilter(relPosItem[0]) == cmdArgs.rel_position, screen.RelativeScreenPosition.__members__.items())) + assert len(relPos) == 1, "CLI argument is ambigue" + relPos = relPos[0][1] + # now we construct the ScreenSetup + if relPos == screen.RelativeScreenPosition.MIRROR: + res = situation.commonResolutions()[0] + setup = screen.ScreenSetup(res, res, relPos) + else: + setup = screen.ScreenSetup(intResolution = situation.internalResolutions()[0], extResolution = situation.externalResolutions()[0], relPosition = relPos) + else: + # ask the user + setup = frontend.setup(situation) + if setup is None: sys.exit(1) # the user canceled + else: + # use first resolution of internal connector + setup = screen.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