useful sorting of resolutions

[lilass.git] / screen.py

diff --git a/screen.py b/screen.py
index 26ffddbfaf38d844989707f240256a4a67785cbc..f9bef55740804effac631a19b7d00b2b3f290eaa 100644 (file)
--- a/screen.py
+++ b/screen.py
@@ -47,7 +47,6 @@ class RelativeScreenPosition(Enum):
         self._value_ = len(cls.__members__)
         self.text = text
 
-
 class Resolution:
     '''Represents a resolution of a screen'''
     def __init__(self, width, height):
@@ -62,6 +61,9 @@ 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))
@@ -76,6 +78,9 @@ class Resolution:
     def __repr__(self):
         return 'screen.Resolution('+self.forXrandr()+')'
     
+    def pixelCount(self):
+        return self.width * self.height
+    
     def forXrandr(self):
         return str(self.width)+'x'+str(self.height)
 
@@ -120,25 +125,34 @@ class ScreenSetup:
         return args
 
 class Connector:
-    name = None # connector name, e.g. "HDMI1"
-    edid = None # EDID string for the connector, or None if disconnected
-    resolutions = [] # list of Resolution objects, empty if disconnected
-    
     def __init__(self, name=None):
-        self.name = name
+        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
+    
     def __str__(self):
         return str(self.name)
+    
+    def __repr__(self):
+        return """<Connector "%s" EDID="%s" resolutions="%s">""" % (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)
+        assert (self.edid is None) == (len(self._resolutions)==0)
         return self.edid is not None
+    
     def addResolution(self, resolution):
         assert isinstance(resolution, Resolution)
-        self.resolutions.append(resolution)
+        self._resolutions.add(resolution)
+    
     def appendToEdid(self, s):
         if self.edid is None:
             self.edid = s
         else:
             self.edid += s
+    
+    def getResolutionList(self):
+        return sorted(self._resolutions, key=lambda r: (0 if r==self.preferredResolution else 1, -r.pixelCount()))
 
 class ScreenSituation:
     connectors = [] # contains all the Connector objects
@@ -151,6 +165,9 @@ class ScreenSituation:
            just choose any remaining connector.'''
         # which connectors are there?
         self._getXrandrInformation()
+        for c in self.connectors:
+            print(repr(c))
+            print()
         # figure out which is the internal connector
         self.internalConnector = self._findAvailableConnector(internalConnectorNames)
         if self.internalConnector is None:
@@ -159,7 +176,7 @@ class ScreenSituation:
         # and the external one
         if externalConnectorNames is None:
             externalConnectorNames = map(lambda c: c.name, self.connectors)
-            externalConnectorNames = filter(lambda name: name != self.internalConnector.name, externalConnectorNames)
+            externalConnectorNames = set(filter(lambda name: name != self.internalConnector.name, externalConnectorNames))
         self.externalConnector = self._findAvailableConnector(externalConnectorNames)
         if self.internalConnector == self.externalConnector:
             raise Exception("Internal and external connector are the same. This must not happen. Please fix ~/.dsl.conf.");
@@ -196,6 +213,8 @@ 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
                 continue
             # EDID?
             m = re.search(r'^\s*EDID:\s*$', line)
@@ -204,7 +223,7 @@ class ScreenSituation:
                 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)
+            #print("Warning: Unknown xrandr line %s" % line)
     
     # return the first available connector from those listed in <tryConnectorNames>, skipping disabled connectors
     def _findAvailableConnector(self, tryConnectorNames):
@@ -214,20 +233,20 @@ class ScreenSituation:
     
     # return available internal resolutions
     def internalResolutions(self):
-        return self.internalConnector.resolutions
+        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.resolutions
+        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
-        return [res for res in externalRes if res in internalRes]
+        return sorted(set(externalRes).intersection(internalRes), key=lambda r: -r.pixelCount())
     
     # compute the xrandr call
     def forXrandr(self, setup):