Add `@media(-moz-windows-accent-color-applies)`

#31 point 3

2 files changed, 15 insertions, 0 deletions

diff --git a/widget/LookAndFeel.h b/widget/LookAndFeel.h
index 3a4929c9f..b7a05748e 100644
--- a/widget/LookAndFeel.h
+++ b/widget/LookAndFeel.h
@@ -239,6 +239,15 @@ public:
     eIntID_ChosenMenuItemsShouldBlink,
 
     /*
+     * A Boolean value to determine whether the Windows accent color
+     * should be applied to the title bar.
+     *
+     * The value of this metric is not used on other platforms. These platforms
+     * should return NS_ERROR_NOT_IMPLEMENTED when queried for this metric.
+     */
+    eIntID_WindowsAccentColorApplies,
+
+    /*
      * A Boolean value to determine whether the Windows default theme is
      * being used.
      *
diff --git a/widget/windows/nsLookAndFeel.cpp b/widget/windows/nsLookAndFeel.cpp
index 7c427ac9f..60e351323 100644
--- a/widget/windows/nsLookAndFeel.cpp
+++ b/widget/windows/nsLookAndFeel.cpp
@@ -419,6 +419,12 @@ nsLookAndFeel::GetIntImpl(IntID aID, int32_t &aResult)
     case eIntID_DWMCompositor:
         aResult = nsUXThemeData::CheckForCompositor();
         break;
+    case eIntID_WindowsAccentColorApplies:
+        {
+          nscolor unused;
+          aResult = NS_SUCCEEDED(GetAccentColor(unused)) ? 1 : 0;
+        }
+        break;
     case eIntID_WindowsGlass:
         // Aero Glass is only available prior to Windows 8 when DWM is used.
         aResult = (nsUXThemeData::CheckForCompositor() && !IsWin8OrLater());