From: R. Steve McKown <rsmckown@gmail.com>
Date: Fri, 23 Jan 2015 09:48:55 +0000 (-0700)
Subject: Close but mirrors dual ext when coming from laptop
X-Git-Url: https://oss.titaniummirror.com/gitweb?p=dispcfg.git;a=commitdiff_plain;h=2f31887ef07272b1ed04f01256adbd9262041da7

Close but mirrors dual ext when coming from laptop

Apparently position isn't valid unless it is 0x0 or right at the edge of
an existing enabled window.
---

diff --git a/xrandr_configure_outputs.py b/xrandr_configure_outputs.py
index d03e9b5..608dfb7 100644
--- a/xrandr_configure_outputs.py
+++ b/xrandr_configure_outputs.py
@@ -36,7 +36,8 @@ class OutputInfo():
         if self.complete():
             return {'name':self.name, 'enabled':self.enabled,
                     'connected':self.connected, 'width':self.width,
-                    'height':self.height, 'posx':self.posx, 'posy':self.posy}
+                    'height':self.height, 'posx':self.posx, 'posy':self.posy,
+                    'use':False, 'done':False}
         else:
             raise ValueError
 
@@ -128,85 +129,67 @@ if __name__ == '__main__':
         outputs = parse()
         #outputs[1]['connected'] = False
         #outputs[2]['connected'] = False
-        print_outputs('Raw outputs', outputs)
+        print_outputs('Outputs', outputs)
 
-        preferred_order = list(reversed([output['name'] for output in outputs]))
-        print 'preferred order:', preferred_order
-        print
-
-        tmp = outputs
-        outputs = []
-        for name in preferred_order:
-            output = output_by_name(tmp, name)
-            if output:
-                outputs.append(output)
-        print_outputs('Sorted outputs', outputs)
-
-        connected_outputs = [output for output in outputs if output['connected']]
-        print_outputs('Connected outputs', connected_outputs)
-
-        enabled_outputs = [output for output in outputs if output['enabled']]
-        print_outputs('Enabled outputs', enabled_outputs)
-
-        # The outputs to use will be a subset of connected outputs
-        touse_outputs = connected_outputs
-
-        # If there are more then 2 connected outputs, start removing them by
-        # order of desirability.  The LCD panel is least desirable under the
-        # assumption that having more than two means the LCD panel shouldn't be
-        # used.
-        while len(touse_outputs) > 2:
-            print 'trim', touse_outputs[-1]['name']
-            touse_outputs = touse_outputs[:-1]
-        print_outputs('To use outputs', touse_outputs)
-
-        # Determine which outputs to turn off, and which to turn on
-        off_outputs = [output for output in enabled_outputs if output not in
-                touse_outputs]
-        print_outputs('Turn these off', off_outputs)
-        on_outputs = [output for output in touse_outputs if output not in
-                enabled_outputs]
-        print_outputs('Turn these on', on_outputs)
-
-        if len(enabled_outputs) < 1 or len(enabled_outputs) > 2 or \
-                len(touse_outputs) < 1 or len(touse_outputs) > 2:
-            print 'Something is wrong; doing nothing'
-            return
-
-        # Compute positions for final outputs
+        # Find the first two connected devices, in reverse list order.  On the
+        # Thinkpad X201, the reversed list order is the preferred order of
+        # precedence, highest quality external display first, down to internal
+        # LVDS panel used as a last resort.  Also find new posx values.
+        used_count = 0
         posx = 0
-        for output in touse_outputs:
-            output['posx'] = posx
-            output['posy'] = 0
-            posx += output['width']
-        print_outputs('touse, with positions', touse_outputs)
-
-        if touse_outputs != enabled_outputs:
-            # Remove all enabled outputs save one
-            while len(enabled_outputs) > 1:
-                output = enabled_outputs[0]
-                enabled_outputs = enabled_outputs[1:]
-                xrandr_off(output)
-
-            # Move the remaining output to a safe position
-            last_old_output = enabled_outputs[0]
-            tmp = last_old_output['posx']
-            last_old_output['posx'] = posx # from above
-            xrandr_on(last_old_output)
-            last_old_output['posx'] = tmp
-
-            # Add the first touse output
-            first_new_output = touse_outputs[0]
-            touse_outputs = touse_outputs[1:]
-            xrandr_on(first_new_output)
-
-            # If last old is not to be used, remove it
-            if not output_by_name(touse_outputs, last_old_output['name']):
-                xrandr_off(last_old_output)
-
-        # Now add the remaining touse outputs
-        for output in touse_outputs:
-            xrandr_on(output)
+        for output in reversed(outputs):
+            if output['connected']:
+                output['use'] = True
+                output['posx'] = posx
+                posx += output['width']
+                used_count += 1
+                if used_count >= 2:
+                    break
+
+        # How many outputs are currently enabled?
+        enabled_count = 0
+        for output in outputs:
+            if output['enabled']:
+                enabled_count += 1
+
+        done = 0
+        while done < len(outputs):
+            done = 0
+            for output in outputs:
+                print 'output', output['name']
+                if output['done']:
+                    print '  already done'
+                    done += 1
+                else:
+                    if not output['use'] and not output['enabled']:
+                        print '  not enabled, not used'
+                        output['done'] = True
+                        done += 1
+                    elif output['use'] and not output['enabled']:
+                        if enabled_count < 2:
+                            print '  use previously unused'
+                            enabled_count += 1
+                            xrandr_on(output)
+                            output['done'] = True
+                            done += 1
+                            break
+                        else:
+                            print '  (skip) use previously unused'
+                    elif not output['use'] and output['enabled']:
+                        if enabled_count > 1:
+                            print '  unused, previously used'
+                            enabled_count -= 1
+                            xrandr_off(output)
+                            output['done'] = True
+                            done += 1
+                            break
+                        else:
+                            print '  (skip) unused, previously used'
+                    else:
+                        print '  used before, used again'
+                        xrandr_on(output)
+                        output['done'] = True
+                        done += 1
 
 
     main(sys.argv)