From 3d33fcdba85340acf0fdcb69d56d8ef27ee14ee5 Mon Sep 17 00:00:00 2001
From: Daniel Kulp <dan@kulp.com>
Date: Mon, 13 Jul 2020 00:57:09 +0200
Subject: [PATCH] Adapt the gradient used in AUI tab art in dark mode

Invert its direction and make it darker for better fit.
---
 src/aui/tabart.cpp | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/aui/tabart.cpp b/src/aui/tabart.cpp
index e96a172b72..5c2cf2710a 100644
--- a/src/aui/tabart.cpp
+++ b/src/aui/tabart.cpp
@@ -281,9 +281,19 @@ void wxAuiGenericTabArt::DrawBackground(wxDC& dc,
                                         wxWindow* WXUNUSED(wnd),
                                         const wxRect& rect)
 {
-    // draw background
-    int topLightness = 90;
-    int bottomLightness = 170;
+    // draw background using arbitrary hard-coded, but at least adapted to dark
+    // mode, gradient
+    int topLightness, bottomLightness;
+    if (wxSystemSettings::GetAppearance().IsUsingDarkBackground())
+    {
+        topLightness = 110;
+        bottomLightness = 90;
+    }
+    else
+    {
+        topLightness = 90;
+        bottomLightness = 170;
+    }
 
     wxColor top_color    = m_baseColour.ChangeLightness(topLightness);
     wxColor bottom_color = m_baseColour.ChangeLightness(bottomLightness);