From c1b73d4a41390baed56b4af352f427fde7a2826b Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sat, 4 Aug 2007 18:43:32 +0000
Subject: [PATCH] Theme-ified MIDI note colours, implemented automagic
 crossfading thereof.

git-svn-id: svn://localhost/ardour2/trunk@2243 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 gtk2_ardour/ardour2_ui_default.conf |  9 +++++
 gtk2_ardour/canvas-midi-event.h     |  2 +-
 gtk2_ardour/canvas-note.h           | 11 ++++--
 gtk2_ardour/canvas_vars.h           |  9 +++++
 gtk2_ardour/midi_region_view.cc     | 34 +++++++----------
 gtk2_ardour/midi_util.h             | 58 +++++++++++++++++++++++++++++
 6 files changed, 99 insertions(+), 24 deletions(-)
 create mode 100644 gtk2_ardour/midi_util.h

diff --git a/gtk2_ardour/ardour2_ui_default.conf b/gtk2_ardour/ardour2_ui_default.conf
index 893c4ba6cd..c3afaaec3f 100644
--- a/gtk2_ardour/ardour2_ui_default.conf
+++ b/gtk2_ardour/ardour2_ui_default.conf
@@ -83,6 +83,15 @@
     <Option name="TrimHandle" value="1900ff44"/>
     <Option name="EditCursor" value="0000ffff"/>
     <Option name="PlayHead" value="ff0000ff"/>
+    <Option name="MidiSelectRectOutline" value="ff000099"/>
+    <Option name="MidiSelectRectFill" value="ffdddd33"/>
+    <Option name="MidiNoteOutlineMin" value="44ff4466"/>
+    <Option name="MidiNoteOutlineMid" value="ffff4466"/>
+    <Option name="MidiNoteOutlineMax" value="ff4444ee"/>
+    <Option name="MidiNoteFillMin" value="44ee4433"/>
+    <Option name="MidiNoteFillMid" value="eeee4444"/>
+    <Option name="MidiNoteFillMax" value="dd999955"/>
+    <Option name="MidiNoteSelectedOutline" value="ff000099"/>
   </Canvas>
 </Ardour>
 
diff --git a/gtk2_ardour/canvas-midi-event.h b/gtk2_ardour/canvas-midi-event.h
index def2203f5c..8a1454c98e 100644
--- a/gtk2_ardour/canvas-midi-event.h
+++ b/gtk2_ardour/canvas-midi-event.h
@@ -50,7 +50,7 @@ public:
 
 	const ARDOUR::MidiModel::Note* note() { return _note; }
 
-private:
+protected:
 	enum State { None, Pressed, Dragging };
 
 	MidiRegionView&                _region;
diff --git a/gtk2_ardour/canvas-note.h b/gtk2_ardour/canvas-note.h
index f49157e0cf..5529c90844 100644
--- a/gtk2_ardour/canvas-note.h
+++ b/gtk2_ardour/canvas-note.h
@@ -23,6 +23,7 @@
 #include <iostream>
 #include "simplerect.h"
 #include "canvas-midi-event.h"
+#include "midi_util.h"
 
 namespace Gnome {
 namespace Canvas {
@@ -35,9 +36,13 @@ public:
 	}
 	
 	virtual void selected(bool yn) {
-		// Temporary hack, no reversal for now
-		if (yn)
-			property_outline_color_rgba() = 0xFF000099;
+		if (!_note)
+			return;
+		else if (yn)
+			property_outline_color_rgba()
+					= ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get();
+		else
+			property_outline_color_rgba() = note_outline_color(_note->velocity());
 	}
 	
 	bool on_event(GdkEvent* ev) { return CanvasMidiEvent::on_event(ev); }
diff --git a/gtk2_ardour/canvas_vars.h b/gtk2_ardour/canvas_vars.h
index 2d9e7ae03c..a6a4e07c7f 100644
--- a/gtk2_ardour/canvas_vars.h
+++ b/gtk2_ardour/canvas_vars.h
@@ -80,3 +80,12 @@ CANVAS_VARIABLE(canvasvar_TrimHandleLocked, "TrimHandleLocked")
 CANVAS_VARIABLE(canvasvar_TrimHandle, "TrimHandle")
 CANVAS_VARIABLE(canvasvar_EditCursor, "EditCursor")
 CANVAS_VARIABLE(canvasvar_PlayHead, "PlayHead")
+CANVAS_VARIABLE(canvasvar_MidiSelectRectOutline, "MidiSelectRectOutline")
+CANVAS_VARIABLE(canvasvar_MidiSelectRectFill, "MidiSelectRectFill")
+CANVAS_VARIABLE(canvasvar_MidiNoteOutlineMin, "MidiNoteOutlineMin")
+CANVAS_VARIABLE(canvasvar_MidiNoteOutlineMid, "MidiNoteOutlineMid")
+CANVAS_VARIABLE(canvasvar_MidiNoteOutlineMax, "MidiNoteOutlineMax")
+CANVAS_VARIABLE(canvasvar_MidiNoteFillMin, "MidiNoteFillMin")
+CANVAS_VARIABLE(canvasvar_MidiNoteFillMid, "MidiNoteFillMid")
+CANVAS_VARIABLE(canvasvar_MidiNoteFillMax, "MidiNoteFillMax")
+CANVAS_VARIABLE(canvasvar_MidiNoteSelectedOutline, "MidiNoteSelectedOutline")
diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index f78577784f..7af8198aa8 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -46,7 +46,7 @@
 #include "ghostregion.h"
 #include "midi_time_axis.h"
 #include "utils.h"
-#include "rgb_macros.h"
+#include "midi_util.h"
 #include "gui_thread.h"
 
 #include "i18n.h"
@@ -176,8 +176,10 @@ MidiRegionView::canvas_event(GdkEvent* ev)
 				drag_rect->property_x2() = event_x;
 				drag_rect->property_y2() = event_y;
 				drag_rect->property_outline_what() = 0xFF;
-				drag_rect->property_outline_color_rgba() = 0xFF000099;
-				drag_rect->property_fill_color_rgba() = 0xFFDDDD33;
+				drag_rect->property_outline_color_rgba()
+					= ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
+				drag_rect->property_fill_color_rgba()
+					= ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 
 				_state = SelectDragging;
 				return true;
@@ -483,10 +485,10 @@ MidiRegionView::add_event (const MidiEvent& ev)
 			ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 					_region->length());
 			ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
-			ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
+			ev_rect->property_fill_color_rgba() = note_fill_color(ev.velocity());
+			ev_rect->property_outline_color_rgba() = note_outline_color(ev.velocity());
 			/* outline all but right edge */
 			ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
-			ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 
 			ev_rect->raise_to_top();
 
@@ -512,9 +514,9 @@ MidiRegionView::add_event (const MidiEvent& ev)
 		CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 		ev_diamond->move(x, y);
 		ev_diamond->show();
-		ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
-		ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
-			
+		ev_diamond->property_fill_color_rgba() = note_fill_color(ev.velocity());
+		ev_diamond->property_outline_color_rgba() = note_outline_color(ev.velocity());
+		
 		_events.push_back(ev_diamond);
 	}
 }
@@ -544,17 +546,9 @@ MidiRegionView::add_note (const MidiModel::Note& note)
 {
 	assert(note.time() >= 0);
 	assert(note.time() < _region->length());
-	//assert(note.time() + note.duration < _region->length());
 
 	ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 	
-	const uint8_t fill_alpha = 0x20 + (uint8_t)(note.velocity() * 1.5); 
-	const uint32_t fill = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, fill_alpha);
-	const uint8_t outline_alpha = 0x80 + (uint8_t)(note.velocity()); 
-	const uint32_t outline = RGBA_TO_UINT(0xE0 + note.velocity()/127.0 * 0x10, 0xE0, 0xE0, outline_alpha);
-	
-	//printf("Event, time = %f, note = %d\n", note.time(), note.note());
-
 	if (midi_view()->note_mode() == Sustained) {
 		const double y1 = midi_stream_view()->note_to_y(note.note());
 
@@ -564,8 +558,8 @@ MidiRegionView::add_note (const MidiModel::Note& note)
 		ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.end_time()));
 		ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 
-		ev_rect->property_fill_color_rgba() = fill;
-		ev_rect->property_outline_color_rgba() = outline;
+		ev_rect->property_fill_color_rgba() = note_fill_color(note.velocity());
+		ev_rect->property_outline_color_rgba() = note_outline_color(note.velocity());
 		ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 
 		ev_rect->show();
@@ -579,8 +573,8 @@ MidiRegionView::add_note (const MidiModel::Note& note)
 		CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size);
 		ev_diamond->move(x, y);
 		ev_diamond->show();
-		ev_diamond->property_fill_color_rgba() = fill;
-		ev_diamond->property_outline_color_rgba() = outline;
+		ev_diamond->property_fill_color_rgba() = note_fill_color(note.velocity());
+		ev_diamond->property_outline_color_rgba() = note_outline_color(note.velocity());
 		_events.push_back(ev_diamond);
 	}
 }
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__ */
+