1 files changed, 63 insertions, 0 deletions
diff --git a/scripts/auto-disp b/scripts/auto-disp
new file mode 100644
index 0000000..6e43a6f
--- /dev/null
+++ b/scripts/auto-disp
@@ -0,0 +1,63 @@
+#!/usr/bin/python
+
+
+import re
+
+import cliapp
+
+
+class AutoDisp(cliapp.Application):
+
+    lid = 'LVDS1'
+    externals = ['VGA1', 'HDMI1', 'DVI1', 'DP1']
+
+    def process_args(self, args):
+        out = self.runcmd(['xrandr', '-q'])
+        outputs = self.parse_outputs(out)
+        
+        got_internal = self.got_output(self.lid, outputs)
+        got_externals = [x 
+                         for x in self.externals 
+                         if self.got_output(x, outputs)]
+                         
+        argv = ['xrandr']
+        if got_externals:
+            res, name = max((outputs[x], x) for x in got_externals)
+            argv += ['--output', name, '--mode', '%dx%d' % res]
+            if got_internal:
+                argv += ['--output', self.lid, '--off']
+        elif got_internal:
+            argv += ['--output', self.lid, 
+                     '--mode', '%dx%d' % outputs[self.lid]]
+        else:
+            raise cliapp.AppException('Oops, don\'t know what to do')
+
+        self.runcmd(argv)
+
+    def got_output(self, name, outputs):
+        return name in outputs
+        
+    def parse_outputs(self, xrandr):
+        output = re.compile(r'^(?P<output>[A-Z0-9]+) connected ')
+        mode = re.compile(r'^   (?P<x>\d+)x(?P<y>\d+) ')
+    
+        result = {}
+        current = None
+
+        lines = xrandr.splitlines()
+        for line in lines:
+            words = line.split()
+            output_match = output.match(line)
+            mode_match = mode.match(line)
+            if output_match:
+                current = output_match.group('output')
+            elif mode_match:
+                assert current is not None
+                x = int(mode_match.group('x'))
+                y = int(mode_match.group('y'))
+                prev = result.get(current, (0,0))
+                result[current] = max((x,y), prev)
+
+        return result    
+    
+AutoDisp().run()