Theme-ified MIDI note colours, implemented automagic crossfading thereof.

git-svn-id: svn://localhost/ardour2/trunk@2243 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 58 insertions, 0 deletions

diff --git a/gtk2_ardour/midi_util.h b/gtk2_ardour/midi_util.h
new file mode 100644
index 0000000000..475fbe3105
--- /dev/null
+++ b/gtk2_ardour/midi_util.h
@@ -0,0 +1,58 @@
+/*
+    Copyright (C) 2007 Paul Davis 
+    Author: Dave Robillard
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef __gtk_ardour_midi_util_h__
+#define __gtk_ardour_midi_util_h__
+
+#include "rgb_macros.h"
+#include "ardour_ui.h"
+#include "ui_config.h"
+
+inline static uint32_t note_outline_color(uint8_t vel)
+{
+	if (vel < 64) {
+		return UINT_INTERPOLATE(
+				ARDOUR_UI::config()->canvasvar_MidiNoteOutlineMin.get(),
+				ARDOUR_UI::config()->canvasvar_MidiNoteOutlineMid.get(),
+				(vel / (double)63.0));
+	} else {
+		return UINT_INTERPOLATE(
+				ARDOUR_UI::config()->canvasvar_MidiNoteOutlineMid.get(),
+				ARDOUR_UI::config()->canvasvar_MidiNoteOutlineMax.get(),
+				((vel-64) / (double)63.0));
+	}
+}
+
+inline static uint32_t note_fill_color(uint8_t vel)
+{
+	if (vel < 64) {
+		return UINT_INTERPOLATE(
+				ARDOUR_UI::config()->canvasvar_MidiNoteOutlineMin.get(),
+				ARDOUR_UI::config()->canvasvar_MidiNoteOutlineMid.get(),
+				(vel / (double)63.0));
+	} else {
+		return UINT_INTERPOLATE(
+				ARDOUR_UI::config()->canvasvar_MidiNoteOutlineMid.get(),
+				ARDOUR_UI::config()->canvasvar_MidiNoteOutlineMax.get(),
+				((vel-64) / (double)63.0));
+	}
+}
+
+#endif /* __gtk_ardour_midi_util_h__ */
+