#!/usr/bin/python
# DSL - easy Display Setup for Laptops
+# Copyright (C) 2012 Ralf Jung <post@ralfj.de>
+#
+# 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 (gpl.txt); 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
+import os, re, subprocess
from selector_window import PositionSelection
-app = QtGui.QApplication(sys.argv)
+import gui
+
+# for auto-config: common names of internal connectors
+commonInternalConnectorNames = ['LVDS', 'LVDS0', 'LVDS1', 'LVDS-0', 'LVDS-1']
# 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()
# 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)
+ result[curKey] = shlex.split(line[pos+1:]) # shlex.split also strips
except Exception:
- raise Exception("Invalid config, line %d: Error parsing line (quoting issue?)" % linenr)
+ raise Exception("Invalid config, line %d: Error parsing line (quoting issue?)." % linenr)
# add some convencience get functions
return result
connectors = {} # map of connector names to a list of resolutions
connector = None # current connector
for line in p.stdout:
+ # ignore screens
+ if line.startswith("Screen"):
+ continue
# 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
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")
+ if p.returncode != 0: raise Exception("Querying xrandr for data failed.")
return connectors
def res2xrandr(res):
strRatio = '16:%d' % ratio
return '%dx%d (%s)' %(w, h, strRatio)
-def findAvailableConnector(tryConnectors, availableConnectors):
+def findAvailableConnector(tryConnectors, allConnectors):
for connector in tryConnectors:
- if connector in availableConnectors: return connector
+ if connector in allConnectors and allConnectors[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']
-connectors = getXrandrInformation()
-usedExternalConnector = findAvailableConnector(externalConnectors, connectors) # *the* external connector which is actually used
+# the main function
+def main():
+ # load connectors and options
+ connectors = getXrandrInformation()
+ 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, connectors)
+ 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
-for c in externalConnectors+[internalConnector]:
- args[c] = ["--off"]
+ # 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():
+ # Check what to do
+ usedExternalConnector = findAvailableConnector(externalConnectors, connectors) # *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]
+ 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:
- 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)
+ # 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__":
+ try:
+ main()
+ except Exception as e:
+ gui.error(str(e))
+ raise
projects / lilass.git / blobdiff