# HG changeset patch
# User Chris Cannam
# Date 1579794210 0
# Node ID fc18ce2d99d7d717fd7c377eb31002c9992f7bbb
# Parent  4eda6ba5b5d8dd6741049c91f73269bc8a773857
Add OSQueryAccentColour

diff -r 4eda6ba5b5d8 -r fc18ce2d99d7 system/System.cpp
--- a/system/System.cpp	Mon Jan 20 17:17:45 2020 +0000
+++ b/system/System.cpp	Thu Jan 23 15:43:30 2020 +0000
@@ -353,6 +353,22 @@
     return false;
 }
 
+bool
+OSQueryAccentColour(int &r, int &g, int &b)
+{
+    SVCERR << "OSQueryAccentColour() called" << endl;
+#ifdef _MSC_VER
+    using namespace winrt::Windows::UI::ViewManagement;
+    UISettings settings;
+    auto background = settings.GetColorValue(UIColorType::Accent);
+    r = background.R;
+    g = background.G;
+    b = background.B;
+    return true;
+#endif
+    return false;
+}
+
 double mod(double x, double y) { return x - (y * floor(x / y)); }
 float modf(float x, float y) { return x - (y * floorf(x / y)); }
 
diff -r 4eda6ba5b5d8 -r fc18ce2d99d7 system/System.h
--- a/system/System.h	Mon Jan 20 17:17:45 2020 +0000
+++ b/system/System.h	Thu Jan 23 15:43:30 2020 +0000
@@ -168,6 +168,12 @@
 // is unknown.
 extern bool OSReportsDarkThemeActive();
 
+// Return true if the OS desktop reports an accent colour to go with
+// the current theme; if so, also return by reference the r, g, and b
+// components of the colour (range 0-255). Return false if we can't
+// query such a thing.
+extern bool OSQueryAccentColour(int &r, int &g, int &b);
+
 extern void StoreStartupLocale();
 extern void RestoreStartupLocale();