From: Mikko Rasa <tdb@tdb.fi>
Date: Thu, 26 Sep 2013 22:01:28 +0000 (+0300)
Subject: Try to guess the primary monitor if xrandr isn't making any sense
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgui.git;a=commitdiff_plain;h=e3edc65a604e02dbb3d9c8f8a66b59e73b0ce09f

Try to guess the primary monitor if xrandr isn't making any sense
---

diff --git a/source/graphics/x11/display.cpp b/source/graphics/x11/display.cpp
index 368b67c..6f677c3 100644
--- a/source/graphics/x11/display.cpp
+++ b/source/graphics/x11/display.cpp
@@ -175,6 +175,22 @@ Display::Display(const string &disp_name):
 						prev_enabled->next_right = &*i;
 					prev_enabled = &*i;
 				}
+
+			if(!primary_monitor || !primary_monitor->desktop_mode)
+			{
+				// XRandR didn't give a sensible primary monitor.  Try to guess one.
+				unsigned largest = 0;
+				for(list<Monitor>::iterator i=monitors.begin(); i!=monitors.end(); ++i)
+					if(i->desktop_mode)
+					{
+						unsigned size = i->desktop_mode->width*i->desktop_mode->height;
+						if(size>largest)
+						{
+							largest = size;
+							primary_monitor = &*i;
+						}
+					}
+			}
 		}
 	}
 #endif