From 48a8774e9e7fdbb87fbf4b8ff96c15dd5a69db46 Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Fri, 5 Oct 2012 16:26:37 +0200 Subject: [PATCH] provide auto-configuration --- dsl.py | 50 ++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 36 insertions(+), 14 deletions(-) diff --git a/dsl.py b/dsl.py index 47c906e..d959b07 100755 --- a/dsl.py +++ b/dsl.py @@ -6,13 +6,18 @@ from PyQt4 import QtGui from selector_window import PositionSelection app = QtGui.QApplication(sys.argv) +# for auto-config: common names of internal connectors +commonInternalConnectorNames = ['LVDS', 'LVDS1'] + # Load a section-less config file: maps parameter names to space-separated lists of strings (with shell quotation) def loadConfigFile(file): import shlex + result = {} + if not os.path.exists(file): + return result # no config file # read config file linenr = 0 with open(file) as file: - result = {} for line in file: linenr += 1 line = line.strip() @@ -34,7 +39,7 @@ def getXrandrInformation(): connector = None # current connector for line in p.stdout: # new connector? - m = re.search(r'^([\w]+) connected ', line) + m = re.search(r'^([\w]+) (dis)?connected ', line) if m is not None: connector = m.groups()[0] assert connector not in connectors @@ -65,22 +70,38 @@ def res2user(res): strRatio = '16:%d' % ratio return '%dx%d (%s)' %(w, h, strRatio) -def findAvailableConnector(tryConnectors, availableConnectors): +def findAvailableConnector(tryConnectors): for connector in tryConnectors: - if connector in availableConnectors: return connector + if connector in connectors and connectors[connector]: # if the connector exists and is active (i.e. there is a resolution) + 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'] +# load connectors and options connectors = getXrandrInformation() -usedExternalConnector = findAvailableConnector(externalConnectors, connectors) # *the* external connector which is actually used +config = loadConfigFile(os.getenv('HOME') + '/.dsl.conf') +# find internal connector +if 'internalConnector' in config: + if len(config['internalConnector']) != 1: + raise Exception("You must specify exactly one internal connector") + internalConnector = config['internalConnector'][0] + if not internalConnector in connectors: + raise Exception("Connector %s does not exist, there is an error in your config file" % internalConnector) +else: + # auto-config + internalConnector = findAvailableConnector(commonInternalConnectorNames) + if internalConnector is None: + raise Exception("Could not automatically find internal connector, please use ~/.dsl.conf to specify it manually") +# all the rest is external then, obviously - unless the user wants to do that manually +if 'externalConnectors' in config: + externalConnectors = config['externalConnectors'] + for connector in externalConnectors: + if not connector in connectors: + raise Exception("Connector %s does not exist, there is an error in your config file" % internalConnector) +else: + externalConnectors = connectors.keys() + externalConnectors.remove(internalConnector) +if not externalConnectors: + raise Exception("No external connector found - either your config is wrong, or your machine has only one connector") # default: screen off args = {} # maps connector names to xrand arguments @@ -88,6 +109,7 @@ for c in externalConnectors+[internalConnector]: args[c] = ["--off"] # Check what to do +usedExternalConnector = findAvailableConnector(externalConnectors) # *the* external connector which is actually used if usedExternalConnector is not None: # there's an external screen connected, we need to ask what to do internalResolutions = connectors[internalConnector] externalResolutions = connectors[usedExternalConnector] -- 2.30.2