]> git.donarmstrong.com Git - deb_pkgs/autorandr.git/blobdiff - autorandr.py
Temporarily undo transformations when applying configurations
[deb_pkgs/autorandr.git] / autorandr.py
index 8c304030f6f04e717e897cdeb240292de1461a3d..257f2f9c6d622fca517f2648fc38b54770cef5dc 100755 (executable)
@@ -83,16 +83,17 @@ class XrandrOutput(object):
         (?:                                                                             # Differentiate disconnected and connected in first line
             disconnected |
             unknown\ connection |
-            (?P<connected>connected)\s+                                                 # If connected:
-            (?:
+            (?P<connected>connected)
+        )
+        (?:\s*
             (?P<primary>primary\ )?                                                     # Might be primary screen
             (?P<width>[0-9]+)x(?P<height>[0-9]+)                                        # Resolution (might be overridden below!)
             \+(?P<x>[0-9]+)\+(?P<y>[0-9]+)\s+                                           # Position
             (?:\(0x[0-9a-fA-F]+\)\s+)?                                                  # XID
             (?P<rotate>(?:normal|left|right|inverted))\s+                               # Rotation
             (?:(?P<reflect>X\ and\ Y|X|Y)\ axis)?                                       # Reflection
-            )?                                                                          # .. but everything of the above only if the screen is in use.
-        ).*
+        )?                                                                              # .. but everything of the above only if the screen is in use.
+        (?:[\ \t]*\(.+)?
         (?:\s*(?:                                                                       # Properties of the output
             Gamma: (?P<gamma>[0-9\.: ]+) |                                              # Gamma value
             Transform: (?P<transform>(?:[\-0-9\. ]+\s+){3}) |                           # Transformation matrix
@@ -126,6 +127,8 @@ class XrandrOutput(object):
 
     XRANDR_DEFAULTS = dict(list(XRANDR_13_DEFAULTS.items()) + list(XRANDR_12_DEFAULTS.items()))
 
+    EDID_UNAVAILABLE = "--CONNECTED-BUT-EDID-UNAVAILABLE-"
+
     def __repr__(self):
         return "<%s%s %s>" % (self.output, (" %s..%s" % (self.edid[:5], self.edid[-5:])) if self.edid else "", " ".join(self.option_vector))
 
@@ -156,6 +159,8 @@ class XrandrOutput(object):
     def sort_key(self):
         "Return a key to sort the outputs for xrandr invocation"
         if not self.edid:
+            return -2
+        if "off" in self.options:
             return -1
         if "pos" in self.options:
             x, y = map(float, self.options["pos"].split("x"))
@@ -208,11 +213,12 @@ class XrandrOutput(object):
 
         options = {}
         if not match["connected"]:
-            options["off"] = None
             edid = None
-        elif not match["width"]:
+        else:
+            edid = "".join(match["edid"].strip().split()) if match["edid"] else "%s-%s" % (XrandrOutput.EDID_UNAVAILABLE, match["output"])
+
+        if not match["width"]:
             options["off"] = None
-            edid = "".join(match["edid"].strip().split())
         else:
             if match["mode_width"]:
                 options["mode"] = "%sx%s" % (match["mode_width"], match["mode_height"])
@@ -244,7 +250,6 @@ class XrandrOutput(object):
                 options["gamma"] = gamma
             if match["rate"]:
                 options["rate"] = match["rate"]
-            edid = "".join(match["edid"].strip().split())
 
         return XrandrOutput(match["output"], edid, options), modes
 
@@ -278,9 +283,9 @@ class XrandrOutput(object):
     def edid_equals(self, other):
         "Compare to another XrandrOutput's edid and on/off-state, taking legacy autorandr behaviour (md5sum'ing) into account"
         if self.edid and other.edid:
-            if len(self.edid) == 32 and len(other.edid) != 32:
+            if len(self.edid) == 32 and len(other.edid) != 32 and not other.edid.startswith(XrandrOutput.EDID_UNAVAILABLE):
                 return hashlib.md5(binascii.unhexlify(other.edid)).hexdigest() == self.edid
-            if len(self.edid) != 32 and len(other.edid) == 32:
+            if len(self.edid) != 32 and len(other.edid) == 32 and not self.edid.startswith(XrandrOutput.EDID_UNAVAILABLE):
                 return hashlib.md5(binascii.unhexlify(self.edid)).hexdigest() == other.edid
         return self.edid == other.edid
 
@@ -425,9 +430,9 @@ def update_mtime(filename):
     except:
         return False
 
-def apply_configuration(configuration, dry_run=False):
+def apply_configuration(new_configuration, current_configuration, dry_run=False):
     "Apply a configuration"
-    outputs = sorted(configuration.keys(), key=lambda x: configuration[x].sort_key)
+    outputs = sorted(new_configuration.keys(), key=lambda x: new_configuration[x].sort_key)
     if dry_run:
         base_argv = [ "echo", "xrandr" ]
     else:
@@ -443,24 +448,41 @@ def apply_configuration(configuration, dry_run=False):
     #   a limit on the number of enabled screens
     # - We must make sure that the screen at 0x0 is activated first,
     #   or the other (first) screen to be activated would be moved there.
+    # - If an active screen already has a transformation and remains active,
+    #   the xrandr call fails with an invalid RRSetScreenSize parameter error.
+    #   Update the configuration in 3 passes in that case.  (On Haswell graphics,
+    #   at least.)
 
+    auxiliary_changes_pre = []
     disable_outputs = []
     enable_outputs = []
+    remain_active_count = 0
     for output in outputs:
-        if not configuration[output].edid or "off" in configuration[output].options:
-            disable_outputs.append(configuration[output].option_vector)
+        if not new_configuration[output].edid or "off" in new_configuration[output].options:
+            disable_outputs.append(new_configuration[output].option_vector)
         else:
-            enable_outputs.append(configuration[output].option_vector)
+            if "off" not in current_configuration[output].options:
+                remain_active_count += 1
+            enable_outputs.append(new_configuration[output].option_vector)
+            if xrandr_version() >= Version("1.3.0") and "transform" in current_configuration[output].options:
+                auxiliary_changes_pre.append(["--output", output, "--transform", "none"])
+
+    # Perform pe-change auxiliary changes
+    if auxiliary_changes_pre:
+        argv = base_argv + list(chain.from_iterable(auxiliary_changes_pre))
+        if subprocess.call(argv) != 0:
+            raise RuntimeError("Command failed: %s" % " ".join(argv))
 
-    # Disable all but the last of the outputs to be disabled
-    if len(disable_outputs) > 1:
-        if subprocess.call(base_argv + list(chain.from_iterable(disable_outputs[:-1]))) != 0:
+    # Disable unused outputs, but make sure that there always is at least one active screen
+    disable_keep = 0 if remain_active_count else 1
+    if len(disable_outputs) > disable_keep:
+        if subprocess.call(base_argv + list(chain.from_iterable(disable_outputs[:-1] if disable_keep else disable_outputs))) != 0:
             # Disabling the outputs failed. Retry with the next command:
             # Sometimes disabling of outputs fails due to an invalid RRSetScreenSize.
             # This does not occur if simultaneously the primary screen is reset.
             pass
         else:
-            disable_outputs = disable_outputs[-1:]
+            disable_outputs = disable_outputs[-1:] if disable_keep else []
 
     # If disable_outputs still has more than one output in it, one of the xrandr-calls below would
     # disable the last two screens. This is a problem, so if this would happen, instead disable only
@@ -642,10 +664,10 @@ def main(argv):
 
         try:
             if "--dry-run" in options:
-                apply_configuration(load_config, True)
+                apply_configuration(load_config, config, True)
             else:
                 exec_scripts(scripts_path, "preswitch")
-                apply_configuration(load_config, False)
+                apply_configuration(load_config, config, False)
                 exec_scripts(scripts_path, "postswitch")
         except Exception as e:
             print("Failed to apply profile '%s':\n%s" % (load_profile, str(e)), file=sys.stderr)