add a guess at appropriate color management for note velocity display

I think that HSV::opposite() is probably too strong here. HSV::darker() might be better. Experimentation needed.

2 files changed, 16 insertions, 5 deletions

diff --git a/libs/canvas/canvas/note.h b/libs/canvas/canvas/note.h
index 2dd3ac6a7b..1b20830042 100644
--- a/libs/canvas/canvas/note.h
+++ b/libs/canvas/canvas/note.h
@@ -33,10 +33,12 @@ public:
 
 	void render (Rect const &, Cairo::RefPtr<Cairo::Context>) const;
 	void set_velocity (double fract);
+	void set_fill_color (Gtkmm2ext::Color);
 
   private:
-	static bool _show_velocity_bars;
-	double _velocity;
+	static bool      _show_velocity_bars;
+	double           _velocity;
+	Gtkmm2ext::Color _velocity_color;
 };
 
 }
diff --git a/libs/canvas/note.cc b/libs/canvas/note.cc
index 0d029b4bd0..c27a93985a 100644
--- a/libs/canvas/note.cc
+++ b/libs/canvas/note.cc
@@ -30,13 +30,15 @@ bool Note::_show_velocity_bars = true;
 
 Note::Note (Canvas* c)
 	: Rectangle (c)
-	, _velocity (0.5)
+	, _velocity (0.0)
+	, _velocity_color (0)
 {
 }
 
 Note::Note (Item* parent)
 	: Rectangle (parent)
-	, _velocity (0.5)
+	, _velocity (0.0)
+	, _velocity_color (0)
 {
 }
 
@@ -78,8 +80,15 @@ Note::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
 			return;
 		}
 
-		Gtkmm2ext::set_source_rgba (context, Gtkmm2ext::contrasting_text_color (fill_color()));
+		Gtkmm2ext::set_source_rgba (context, _velocity_color);
 		context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
 		context->fill ();
 	}
 }
+
+void
+Note::set_fill_color (Gtkmm2ext::Color c)
+{
+	Fill::set_fill_color (c);
+	_velocity_color = Gtkmm2ext::HSV (c).opposite().color ();
+}