X-Git-Url: https://git.ralfj.de/lilass.git/blobdiff_plain/09b026a7a1fc1a072c7bc7dc6d491ad71180617f..e683c0b07928d9b51505477c85dfd8dc9838ecbc:/screen.py diff --git a/screen.py b/screen.py index f9bef55..f0de7e9 100644 --- a/screen.py +++ b/screen.py @@ -32,6 +32,14 @@ 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): @@ -44,8 +52,10 @@ class RelativeScreenPosition(Enum): def __init__(self, text): # auto numbering cls = self.__class__ - self._value_ = len(cls.__members__) + self._value_ = len(cls.__members__) + 1 self.text = text + def __str__(self): + return self.text class Resolution: '''Represents a resolution of a screen''' @@ -53,6 +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 @@ -67,7 +95,9 @@ class Resolution: 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' @@ -80,9 +110,6 @@ class Resolution: def pixelCount(self): return self.width * self.height - - def forXrandr(self): - return str(self.width)+'x'+str(self.height) class ScreenSetup: @@ -123,13 +150,22 @@ 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 - self._resolutions = set() # list of Resolution objects, empty if disconnected - self.preferredResolution = None + 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) @@ -138,8 +174,8 @@ class Connector: return """""" % (str(self.name), str(self.edid), ", ".join(str(r) for r in self.getResolutionList())) def isConnected(self): - assert (self.edid is None) == (len(self._resolutions)==0) - return self.edid is not None + # 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) @@ -151,23 +187,31 @@ class Connector: 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: (0 if r==self.preferredResolution else 1, -r.pixelCount())) + return sorted(self._resolutions, key=lambda r: -r.pixelCount()) class ScreenSituation: - connectors = [] # contains all the Connector objects + 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() - for c in self.connectors: - print(repr(c)) - print() + self.connectors = [] + self._getXrandrInformation(xrandrSource) # figure out which is the internal connector self.internalConnector = self._findAvailableConnector(internalConnectorNames) if self.internalConnector is None: @@ -183,10 +227,12 @@ class ScreenSituation: 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 readingEdid = False - for line in processOutputGen("xrandr", "-q", "--verbose"): + if xrandrSource is None: + xrandrSource = processOutputGen("xrandr", "-q", "--verbose") + for line in xrandrSource: if readingEdid: m = re.match(r'^\s*([0-9a-f]+)\s*$', line) if m is not None: @@ -204,8 +250,10 @@ class ScreenSituation: m = re.search(r'^([\w\-]+) (dis)?connected ', line) if m is not None: connector = Connector(m.group(1)) - assert not any(c.name == connector.name for c in self.connectors) - self.connectors.append(connector) + assert not any(c.name == connector.name for c in self.connectors), "Duplicate connector {}".format(connector.name) + if not connector.name.startswith("VIRTUAL"): + # skip "VIRTUAL" connectors + self.connectors.append(connector) continue # new resolution? m = re.search(r'^\s*([\d]+)x([\d]+)', line) @@ -213,8 +261,8 @@ class ScreenSituation: resolution = Resolution(int(m.group(1)), int(m.group(2))) assert connector is not None connector.addResolution(resolution) - if '+preferred' in line: - connector.preferredResolution = resolution + if re.search(r' [+]preferred\b', line): + connector.setPreferredResolution(resolution) continue # EDID? m = re.search(r'^\s*EDID:\s*$', line) @@ -222,8 +270,7 @@ class ScreenSituation: 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) + # 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 the first available connector from those listed in , skipping disabled connectors def _findAvailableConnector(self, tryConnectorNames): @@ -231,21 +278,11 @@ class ScreenSituation: return c return None - # return available internal resolutions - def internalResolutions(self): - return self.internalConnector.getResolutionList() - - # 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.externalConnector.getResolutionList() - # return resolutions available for both internal and external screen def commonResolutions(self): - internalRes = self.internalResolutions() - externalRes = self.externalResolutions() - assert externalRes is not None + 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 @@ -266,3 +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)