2 # DSL - easy Display Setup for Laptops
3 # Copyright (C) 2012-2015 Ralf Jung <post@ralfj.de>
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 import argparse, sys, os, os.path, shutil, re, subprocess
21 import gui, screen, util, database
22 frontend = gui.getFrontend("cli") # the fallback, until we got a proper frontend. This is guaranteed to be available.
25 # for auto-config: common names of internal connectors
26 commonInternalConnectorPrefixes = ['LVDS', 'eDP']
27 commonInternalConnectorSuffices = ['', '0', '1', '-0', '-1']
28 def commonInternalConnectorNames():
29 for prefix in commonInternalConnectorPrefixes:
30 for suffix in commonInternalConnectorSuffices:
33 # Load a section-less config file: maps parameter names to space-separated lists of strings (with shell quotation)
34 def loadConfigFile(filename):
37 if not os.path.exists(filename):
38 return result # no config file
41 with open(filename) as f:
45 if not len(line) or line.startswith("#"): continue # skip empty and comment lines
48 pos = line.index("=") # will raise exception when substring is not found
49 curKey = line[:pos].strip()
50 result[curKey] = shlex.split(line[pos+1:]) # shlex.split also strips
52 raise Exception("Invalid config, line %d: Error parsing line (may be a quoting issue)." % linenr)
53 # add some convencience get functions
57 # Make sure the backlight is turned on
58 def turnOnBacklight():
60 backlight = float(subprocess.check_output(["xbacklight", "-get"]).strip())
61 if backlight == 0: # it's completely turned off, we better enable it
62 subprocess.check_call(["xbacklight", "-set", "100"])
63 except FileNotFoundError:
64 print("xbacklight has not been found, unable to turn your laptop backlight on.")
65 except subprocess.CalledProcessError:
66 print("xbacklight returned an error while attempting to turn your laptop backlight on.")
69 # return the current sceen situation, using the configuration to control connecor detection
70 def situationByConfig(config):
72 if 'internalConnector' in config:
73 if len(config['internalConnector']) != 1:
74 raise Exception("You must specify exactly one internal connector.")
75 internalConnectors = config['internalConnector']
77 internalConnectors = commonInternalConnectorNames()
79 return screen.ScreenSituation(internalConnectors, config.get('externalConnectors'))
82 if __name__ == "__main__":
84 # how do we filter the RelativeScreenPosition for the CLI?
85 relPosFilter = str.lower
87 # parse command-line arguments
88 parser = argparse.ArgumentParser(description='easy Display Setup for Laptops')
89 parser.add_argument("-f", "--frontend",
91 help="The frontend to be used for user interaction")
92 parser.add_argument("-r", "--relative-position",
93 dest="rel_position", choices=list(map(relPosFilter, screen.RelativeScreenPosition.__members__.keys())),
94 help="Set the position of external screen relative to internal one, in case it is not found in the DB.")
95 parser.add_argument("-e", "--external-only",
96 dest="external_only", action='store_true',
97 help="If an external screen is connected, disable all the others.")
98 parser.add_argument("-i", "--internal-only",
99 dest="internal_only", action='store_true',
100 help="Enable internal screen, disable all the others.")
101 parser.add_argument("-s", "--silent",
102 dest="silent", action='store_true',
103 help="Prefer to be silent: Opens a UI only if the external screen is not known *and* no default configuration (-r/-e/-i) is given.")
104 parser.add_argument("--no-db",
105 dest="use_db", action='store_false',
106 help="Do not use the database of known screens.")
107 parser.add_argument("-v", "--verbose",
108 dest="verbose", action='store_true',
109 help="More verbose output on stderr.")
110 cmdArgs = parser.parse_args()
112 # load frontend early (for error mssages)
113 frontend = gui.getFrontend(cmdArgs.frontend)
117 legacyConfigFilePath = os.getenv('HOME') + '/.lilass.conf'
118 configDirectory = util.getConfigDirectory()
119 configFilePath = os.path.join(configDirectory, "lilass.conf")
120 if os.path.isfile(legacyConfigFilePath) and not os.path.isfile(configFilePath):
121 # looks like we just upgraded to a new version of lilass
122 util.mkdirP(configDirectory)
123 shutil.move(legacyConfigFilePath, configFilePath)
125 dataDirectory = util.getDataDirectory()
126 util.mkdirP(dataDirectory)
127 databaseFilePath = os.path.join(dataDirectory, "collected_data.sqlite")
130 config = loadConfigFile(configFilePath)
132 # see what situation we are in
133 situation = situationByConfig(config)
135 # construct the ScreenSetup
137 if situation.externalConnector is not None:
138 # There's an external screen connected that we may want to use.
139 # Fetch info about this screen from the database.
140 # NOTE: If it is too slow to open the DB twice (reading and saving), we can keep it open all the time
142 with database.Database(databaseFilePath) as db:
143 situation.fetchDBInfo(db)
145 have_default_conf = bool(cmdArgs.external_only or cmdArgs.internal_only or cmdArgs.rel_position)
146 no_ui = bool(have_default_conf or (situation.previousSetup and cmdArgs.silent))
148 # ask the user what to do
149 setup = frontend.setup(situation)
150 if setup is None: sys.exit(1) # the user canceled
152 # persists this to disk
153 with database.Database(databaseFilePath) as db:
154 situation.putDBInfo(db, setup)
155 elif situation.previousSetup:
156 # apply the old setup again
157 setup = situation.previousSetup
158 # use default config from CLI
159 elif cmdArgs.external_only:
160 setup = screen.ScreenSetup(intResolution = None, extResolution = situation.externalConnector.getPreferredResolution())
161 elif cmdArgs.rel_position is not None:
162 # construct automatically, based on CLI arguments
163 # first, figure out the desired RelativeScreenPosition... waht a bad hack...
164 relPos = list(filter(lambda relPosItem: relPosFilter(relPosItem[0]) == cmdArgs.rel_position, screen.RelativeScreenPosition.__members__.items()))
165 assert len(relPos) == 1, "CLI argument is ambigue"
166 relPos = relPos[0][1]
167 # now we construct the ScreenSetup
168 if relPos == screen.RelativeScreenPosition.MIRROR:
169 res = situation.commonResolutions()[0]
170 setup = screen.ScreenSetup(res, res, relPos)
172 setup = screen.ScreenSetup(intResolution = situation.internalConnector.getPreferredResolution(),
173 extResolution = situation.externalConnector.getPreferredResolution(),
174 relPosition = relPos)
175 # cmdArgs.internal_only: fall-through
177 assert cmdArgs.internal_only or situation.externalConnector is None
178 # Nothing chosen yet? Use first resolution of internal connector.
179 setup = screen.ScreenSetup(intResolution = situation.internalConnector.getPreferredResolution(), extResolution = None)
182 xrandrCall = situation.forXrandr(setup)
183 print("Call that will be made:",xrandrCall)
184 subprocess.check_call(xrandrCall)
186 # make sure the internal screen is really, *really* turned on if there is no external screen
187 if setup.extResolution is None:
189 except Exception as e:
190 frontend.error(str(e))
191 if cmdArgs is None or cmdArgs.verbose: