From 5161dc43d63067f4054ce726d94d75b2cca7c359 Mon Sep 17 00:00:00 2001
From: bubnikv <bubnikv@gmail.com>
Date: Fri, 17 May 2019 18:40:13 +0200
Subject: [PATCH] Enumerate screens and calculate maximum screen scaling.

---
 src/slic3r/Utils/MacDarkMode.hpp |  1 +
 src/slic3r/Utils/MacDarkMode.mm  | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/src/slic3r/Utils/MacDarkMode.hpp b/src/slic3r/Utils/MacDarkMode.hpp
index cfdc028882..ea8a7ae43f 100644
--- a/src/slic3r/Utils/MacDarkMode.hpp
+++ b/src/slic3r/Utils/MacDarkMode.hpp
@@ -6,6 +6,7 @@ namespace GUI {
 
 #if __APPLE__
 extern bool mac_dark_mode();
+extern double mac_max_scaling_factor();
 #endif
 
 
diff --git a/src/slic3r/Utils/MacDarkMode.mm b/src/slic3r/Utils/MacDarkMode.mm
index 4177ee371c..514b6e7d3f 100644
--- a/src/slic3r/Utils/MacDarkMode.mm
+++ b/src/slic3r/Utils/MacDarkMode.mm
@@ -15,6 +15,17 @@ bool mac_dark_mode()
 
 }
 
+double mac_max_scaling_factor()
+{
+    double scaling = 1.;
+    if ([NSScreen screens] == nil) {
+        scalign = [[NSScreen mainScreen] backingScaleFactor];
+    } else {
+	    for (int i = 0; i < [[NSScreen screens] count]; ++ i)
+	    	scaling = std::max<double>(scaling, [[[NSScreen screens] objectAtIndex:0] backingScaleFactor]);
+	}
+    return scalign;
+}
 
 }
 }