X-Git-Url: https://git.ralfj.de/lilass.git/blobdiff_plain/ffc98865eecc0de34e0a33d7d83461ed9d4ee29b..HEAD:/screen.py diff --git a/screen.py b/screen.py index a543fea..f0de7e9 100644 --- a/screen.py +++ b/screen.py @@ -32,16 +32,30 @@ def processOutputGen(*args): def processOutputIt(*args): return list(processOutputGen(*args)) # list() iterates over the generator +# for auto-config: common names of internal connectors +def commonInternalConnectorNames(): + commonInternalConnectorPrefixes = ['LVDS', 'eDP'] + commonInternalConnectorSuffices = ['', '0', '1', '-0', '-1'] + for prefix in commonInternalConnectorPrefixes: + for suffix in commonInternalConnectorSuffices: + yield prefix+suffix + ## the classes class RelativeScreenPosition(Enum): '''Represents the relative position of the external screen to the internal one''' - LEFT = 0 - RIGHT = 1 - ABOVE = 2 - BELOW = 3 - MIRROR = 4 - + LEFT = ("left of") + RIGHT = ("right of") + ABOVE = ("above") + BELOW = ("below") + MIRROR = ("same as") + def __init__(self, text): + # auto numbering + cls = self.__class__ + self._value_ = len(cls.__members__) + 1 + self.text = text + def __str__(self): + return self.text class Resolution: '''Represents a resolution of a screen''' @@ -49,6 +63,24 @@ class Resolution: self.width = width self.height = height + @classmethod + def fromDatabase(cls, dbstr): + if dbstr is None: + return None + parts = dbstr.split("x") + if len(parts) != 2: + raise ValueError(xrandrstr) + return Resolution(*map(int,parts)) + + def forDatabase(self): + return str(self.width)+'x'+str(self.height) + + def forXrandr(self): + return self.forDatabase() + + def toTuple(self): + return (self.width, self.height) + def __eq__(self, other): if not isinstance(other, Resolution): return False @@ -57,10 +89,15 @@ class Resolution: def __ne__(self, other): return not self.__eq__(other) + def __hash__(self): + return hash(("Resolution",self.width,self.height)) + def __str__(self): # get ratio ratio = int(round(16.0*self.height/self.width)) - if ratio == 12: # 16:12 = 4:3 + if ratio == 11: # 16:10.66 = 3:2 + strRatio = "3:2" + elif ratio == 12: # 16:12 = 4:3 strRatio = '4:3' elif ratio == 13: # 16:12.8 = 5:4 strRatio = '5:4' @@ -71,8 +108,8 @@ class Resolution: def __repr__(self): return 'screen.Resolution('+self.forXrandr()+')' - def forXrandr(self): - return str(self.width)+'x'+str(self.height) + def pixelCount(self): + return self.width * self.height class ScreenSetup: @@ -113,36 +150,97 @@ class ScreenSetup: RelativeScreenPosition.MIRROR: '--same-as', }[self.relPosition], intName] return args + + def __str__(self): + if self.intResolution is None: + return "External display only, at "+str(self.extResolution) + if self.extResolution is None: + return "Internal display only, at "+str(self.intResolution) + return "External display %s at %s %s internal display %s at %s" % ("(primary)" if self.extIsPrimary else "", str(self.extResolution), str(self.relPosition), "" if self.extIsPrimary else "(primary)", str(self.intResolution)) +class Connector: + def __init__(self, name=None): + self.name = name # connector name, e.g. "HDMI1" + self.edid = None # EDID string for the connector, or None if disconnected / unavailable + self._resolutions = set() # set of Resolution objects, empty if disconnected + self._preferredResolution = None + self.previousResolution = None + self.hasLastResolution = False + + def __str__(self): + return str(self.name) + + def __repr__(self): + return """""" % (str(self.name), str(self.edid), ", ".join(str(r) for r in self.getResolutionList())) + + def isConnected(self): + # It is very possible not to have an EDID even for a connected connector + return len(self._resolutions) > 0 + + def addResolution(self, resolution): + assert isinstance(resolution, Resolution) + self._resolutions.add(resolution) + + def appendToEdid(self, s): + if self.edid is None: + self.edid = s + else: + self.edid += s + + def setPreferredResolution(self, resolution): + assert isinstance(resolution, Resolution) and resolution in self._resolutions + self._preferredResolution = resolution + + def getPreferredResolution(self): + if self._preferredResolution is not None: + return self._preferredResolution + return self.getResolutionList()[0] # prefer the largest resolution + + def getResolutionList(self): + return sorted(self._resolutions, key=lambda r: -r.pixelCount()) class ScreenSituation: - connectors = {} # maps connector names to lists of Resolution (empty list -> disabled connector) - internalConnector = None # name of the internal connector (will be an enabled one) - externalConnector = None # name of the used external connector (an enabled one), or None + connectors = None # contains all the Connector objects + internalConnector = None # the internal Connector object (will be an enabled one) + externalConnector = None # the used external Connector object (an enabled one), or None + previousSetup = None # None or the ScreenSetup used the last time this external screen was connected '''Represents the "screen situation" a machine can be in: Which connectors exist, which resolutions do they have, what are the names for the internal and external screen''' - def __init__(self, internalConnectorNames, externalConnectorNames = None): + def __init__(self, internalConnectorNames, externalConnectorNames = None, xrandrSource = None): '''Both arguments are lists of connector names. The first one which exists and has a screen attached is chosen for that class. can be None to just choose any remaining connector.''' # which connectors are there? - self._getXrandrInformation() - print(self.connectors) + self.connectors = [] + self._getXrandrInformation(xrandrSource) # figure out which is the internal connector self.internalConnector = self._findAvailableConnector(internalConnectorNames) if self.internalConnector is None: - raise Exception("Could not automatically find internal connector, please use ~/.dsl.conf to specify it manually.") - print(self.internalConnector) + raise Exception("Could not automatically find internal connector, please use (or fix) ~/.dsl.conf to specify it manually.") + print("Detected internal connector:",self.internalConnector) # and the external one if externalConnectorNames is None: - externalConnectorNames = list(self.connectors.keys()) - externalConnectorNames.remove(self.internalConnector) + externalConnectorNames = map(lambda c: c.name, self.connectors) + externalConnectorNames = set(filter(lambda name: name != self.internalConnector.name, externalConnectorNames)) self.externalConnector = self._findAvailableConnector(externalConnectorNames) - print(self.externalConnector) + if self.internalConnector == self.externalConnector: + raise Exception("Internal and external connector are the same. This must not happen. Please fix ~/.dsl.conf."); + print("Detected external connector:",self.externalConnector) # Run xrandr and fill the dict of connector names mapped to lists of available resolutions. - def _getXrandrInformation(self): + def _getXrandrInformation(self, xrandrSource = None): connector = None # current connector - for line in processOutputGen("xrandr", "-q"): + readingEdid = False + if xrandrSource is None: + xrandrSource = processOutputGen("xrandr", "-q", "--verbose") + for line in xrandrSource: + if readingEdid: + m = re.match(r'^\s*([0-9a-f]+)\s*$', line) + if m is not None: + connector.appendToEdid(m.group(1)) + continue + else: + readingEdid = False + # fallthrough to the rest of the loop for parsing of this line # screen? m = re.search(r'^Screen [0-9]+: ', line) if m is not None: # ignore this line @@ -151,55 +249,52 @@ class ScreenSituation: # new connector? m = re.search(r'^([\w\-]+) (dis)?connected ', line) if m is not None: - connector = m.groups()[0] - assert connector not in self.connectors - self.connectors[connector] = [] + connector = Connector(m.group(1)) + assert not any(c.name == connector.name for c in self.connectors), "Duplicate connector {}".format(connector.name) + if not connector.name.startswith("VIRTUAL"): + # skip "VIRTUAL" connectors + self.connectors.append(connector) continue # new resolution? - m = re.search(r'^ ([\d]+)x([\d]+) +', line) + m = re.search(r'^\s*([\d]+)x([\d]+)', line) if m is not None: - resolution = Resolution(int(m.groups()[0]), int(m.groups()[1])) + resolution = Resolution(int(m.group(1)), int(m.group(2))) assert connector is not None - self.connectors[connector].append(resolution) + connector.addResolution(resolution) + if re.search(r' [+]preferred\b', line): + connector.setPreferredResolution(resolution) + continue + # EDID? + m = re.search(r'^\s*EDID:\s*$', line) + if m is not None: + readingEdid = True continue # unknown line - # not fatal, e.g. xrandr shows strange stuff when a display is enabled, but not connected - print("Warning: Unknown xrandr line %s" % line) - - # return the first available connector from those listed in , skipping disabled connectors - def _findAvailableConnector(self, tryConnectors): - for connector in tryConnectors: - if connector in self.connectors and len(self.connectors[connector]): # if the connector exists and is active (i.e. there is a resolution) - return connector - return None - - # return available internal resolutions - def internalResolutions(self): - return self.connectors[self.internalConnector] + # not fatal, e.g. xrandr shows strange stuff when a display is enabled, but not connected; --verbose adds a whole lot of other weird stuff - # return available external resolutions (or None, if there is no external screen connected) - def externalResolutions(self): - if self.externalConnector is None: - return None - return self.connectors[self.externalConnector] + # return the first available connector from those listed in , skipping disabled connectors + def _findAvailableConnector(self, tryConnectorNames): + for c in filter(lambda c: c.name in tryConnectorNames and c.isConnected(), self.connectors): + return c + return None # return resolutions available for both internal and external screen def commonResolutions(self): - internalRes = self.internalResolutions() - externalRes = self.externalResolutions() - assert externalRes is not None - return [res for res in externalRes if res in internalRes] + assert self.externalConnector is not None, "Common resolutions may only be queried if there is an external screen connected." + internalRes = self.internalConnector.getResolutionList() + externalRes = self.externalConnector.getResolutionList() + return sorted(set(externalRes).intersection(internalRes), key=lambda r: -r.pixelCount()) # compute the xrandr call def forXrandr(self, setup): # turn all screens off connectorArgs = {} # maps connector names to xrand arguments - for c in self.connectors.keys(): - connectorArgs[c] = ["--off"] + for c in self.connectors: + connectorArgs[c.name] = ["--off"] # set arguments for the relevant ones - connectorArgs[self.internalConnector] = setup.getInternalArgs() + connectorArgs[self.internalConnector.name] = setup.getInternalArgs() if self.externalConnector is not None: - connectorArgs[self.externalConnector] = setup.getExternalArgs(self.internalConnector) + connectorArgs[self.externalConnector.name] = setup.getExternalArgs(self.internalConnector.name) else: assert setup.extResolution is None, "There's no external screen to set a resolution for" # now compose the arguments @@ -208,3 +303,17 @@ class ScreenSituation: call += ["--output", name] + connectorArgs[name] return call + def fetchDBInfo(self, db): + if self.externalConnector and self.externalConnector.edid: + self.previousSetup = db.getConfig(self.externalConnector.edid) # may also return None + else: + self.previousSetup = None + if self.previousSetup: + print("Known screen, previous setup:", self.previousSetup) + self.externalConnector.previousResolution = self.previousSetup.extResolution + self.internalConnector.previousResolution = self.previousSetup.intResolution + + def putDBInfo(self, db, setup): + if not self.externalConnector or not self.externalConnector.edid: + return + db.putConfig(self.externalConnector.edid, setup)