Add -moz-windows-accent-color-is-dark

#31 point 4

2 files changed, 13 insertions, 0 deletions

diff --git a/widget/windows/nsLookAndFeel.cpp b/widget/windows/nsLookAndFeel.cpp
index 5c0358bd9..e649802b1 100644
--- a/widget/windows/nsLookAndFeel.cpp
+++ b/widget/windows/nsLookAndFeel.cpp
@@ -442,6 +442,14 @@ nsLookAndFeel::GetIntImpl(IntID aID, int32_t &aResult)
           aResult = NS_SUCCEEDED(GetAccentColor(unused)) ? 1 : 0;
         }
         break;
+    case eIntID_WindowsAccentColorIsDark:
+        {
+          nscolor accentColor;
+          if (NS_SUCCEEDED(GetAccentColor(accentColor))) {
+            aResult = AccentColorIsDark(accentColor) ? 1 : 0;
+          }
+        }
+        break;
     case eIntID_WindowsGlass:
         // Aero Glass is only available prior to Windows 8 when DWM is used.
         aResult = (nsUXThemeData::CheckForCompositor() && !IsWin8OrLater());
diff --git a/widget/windows/nsWindow.cpp b/widget/windows/nsWindow.cpp
index dd4f359f7..85321a189 100644
--- a/widget/windows/nsWindow.cpp
+++ b/widget/windows/nsWindow.cpp
@@ -7138,6 +7138,11 @@ nsWindow::OnSysColorChanged()
     // so all presentations get notified properly.
     // See nsWindow::GlobalMsgWindowProc.
     NotifySysColorChanged();
+    // On Windows 10 only, we trigger a theme change to pick up changed media
+    // queries that are needed for accent color changes.
+    if (IsWin10OrLater()) {
+      NotifyThemeChanged();
+    }
   }
 }