From 811065cff4c741245c9a7e6d03b1c67c69b2c218 Mon Sep 17 00:00:00 2001
From: Leland Lucius <github@homerow.net>
Date: Fri, 2 Apr 2021 01:11:44 -0500
Subject: [PATCH] Bug 2694 - Coloring of tracks in Mixer Board are awry

---
 src/widgets/ASlider.cpp | 21 +++++++++++++++++++++
 src/widgets/ASlider.h   |  5 +++--
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/src/widgets/ASlider.cpp b/src/widgets/ASlider.cpp
index 00e0b2506..03b6291c4 100644
--- a/src/widgets/ASlider.cpp
+++ b/src/widgets/ASlider.cpp
@@ -1532,6 +1532,15 @@ void LWSlider::Refresh()
       mParent->Refresh(false);
 }
 
+void LWSlider::Redraw()
+{
+   mBitmap.reset();
+   mThumbBitmap.reset();
+   mThumbBitmapHilited.reset();
+
+   Refresh();
+}
+
 bool LWSlider::GetEnabled() const
 {
    return mEnabled;
@@ -1616,6 +1625,18 @@ ASlider::~ASlider()
       ReleaseMouse();
 }
 
+bool ASlider::SetBackgroundColour(const wxColour& colour)
+{
+   auto res = wxPanel::SetBackgroundColour(colour);
+
+   if (res && mLWSlider)
+   {
+      mLWSlider->Redraw();
+   }
+
+   return res;
+}
+
 void ASlider::OnSlider(wxCommandEvent &event)
 {
 
diff --git a/src/widgets/ASlider.h b/src/widgets/ASlider.h
index f50b2bddb..8b8d3b116 100644
--- a/src/widgets/ASlider.h
+++ b/src/widgets/ASlider.h
@@ -136,6 +136,7 @@ class LWSlider
    void OnMouseEvent(wxMouseEvent & event);
    void OnKeyDown(wxKeyEvent & event);
    void Refresh();
+   void Redraw();
 
    bool ShowDialog();
    bool ShowDialog(wxPoint pos);
@@ -146,8 +147,6 @@ class LWSlider
    float GetMinValue() const;
    float GetMaxValue() const;
 
-   static void DeleteSharedTipPanel();
-
    void SetParent(wxWindow *parent) { mParent = parent; }
    void SendUpdate(float newValue);
 
@@ -272,6 +271,8 @@ class ASlider /* not final */ : public wxPanel
 
    void SetFocusFromKbd() override;
 
+   bool SetBackgroundColour(const wxColour& colour) override;
+
    void GetScroll(float & line, float & page);
    void SetScroll(float line, float page);