From 2e532329a773dea3c04d243d5237f2c2eb4779f3 Mon Sep 17 00:00:00 2001
From: ed <eddavies95@gmail.com>
Date: Mon, 14 Jan 2019 10:28:59 +0000
Subject: [PATCH] Handle display lists without a (0, 0) root node

---
 .../juce_gui_basics/desktop/juce_Displays.cpp | 31 ++++++++++++++-----
 1 file changed, 24 insertions(+), 7 deletions(-)

diff --git a/modules/juce_gui_basics/desktop/juce_Displays.cpp b/modules/juce_gui_basics/desktop/juce_Displays.cpp
index 7ef4a32ce8..f9c4c4c2a4 100644
--- a/modules/juce_gui_basics/desktop/juce_Displays.cpp
+++ b/modules/juce_gui_basics/desktop/juce_Displays.cpp
@@ -326,19 +326,36 @@ void Displays::updateToLogical()
         DisplayNode node;
 
         node.display = &d;
+
+        if (d.totalArea.getTopLeft() == Point<int>())
+            node.isRoot = true;
+
         displayNodes.add (node);
     }
 
-    DisplayNode* root = nullptr;
-    for (auto& node : displayNodes)
+    auto* root = [&displayNodes]() -> DisplayNode*
     {
-        if (node.display->totalArea.getTopLeft() == Point<int>())
+        for (auto& node : displayNodes)
+            if (node.isRoot)
+                return &node;
+
+        auto minDistance = std::numeric_limits<int>::max();
+        DisplayNode* retVal = nullptr;
+
+        for (auto& node : displayNodes)
         {
-            root = &node;
-            root->isRoot = true;
-            break;
+            auto distance = node.display->totalArea.getTopLeft().getDistanceFrom ({});
+
+            if (distance < minDistance)
+            {
+                minDistance = distance;
+                retVal = &node;
+            }
         }
-    }
+
+        retVal->isRoot = true;
+        return retVal;
+    }();
 
     // Must have a root node!
     jassert (root != nullptr);