Initial import of gtk2_ardour.

git-svn-id: svn://localhost/trunk/ardour2@24 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 96 insertions, 0 deletions

diff --git a/gtk2_ardour/axis_view.cc b/gtk2_ardour/axis_view.cc
new file mode 100644
index 0000000000..419877e75a
--- /dev/null
+++ b/gtk2_ardour/axis_view.cc
@@ -0,0 +1,96 @@
+/*
+    Copyright (C) 2003 Paul Davis 
+
+    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.
+
+    $Id$
+*/
+
+#include <cstdlib>
+#include <cmath>
+
+#include <algorithm>
+#include <string>
+
+#include <list>
+
+#include <pbd/error.h>
+
+#include <gtkmmext/utils.h>
+#include <gtkmmext/selector.h>
+#include <gtkmmext/gtk_ui.h>
+
+#include <ardour/session.h>
+#include <ardour/utils.h>
+
+#include "public_editor.h"
+#include "axis_view.h"
+#include "i18n.h"
+
+using namespace Gtk;
+using namespace Gtkmmext;
+
+
+list<GdkColor> AxisView::used_colors;
+
+AxisView::AxisView (ARDOUR::Session& sess) : _session(sess)
+{
+	_selected = false;
+}
+
+AxisView::~AxisView()
+{
+
+}
+
+GdkColor
+AxisView::unique_random_color()
+{
+	GdkColor newcolor;
+	
+	while (1) {
+
+		/* avoid neon/glowing tones by limiting them to the
+		   "inner section" (paler) of a color wheel/circle.
+		*/
+
+		const int32_t max_saturation = 48000; // 65535 would open up the whole color wheel
+
+		newcolor.red = random() % max_saturation;
+		newcolor.blue = random() % max_saturation;
+		newcolor.green = random() % max_saturation;
+
+		if (used_colors.size() == 0) {
+			used_colors.push_back (newcolor);
+			return newcolor;
+		}
+		
+		for (list<GdkColor>::iterator i = used_colors.begin(); i != used_colors.end(); ++i) {
+			GdkColor c = *i;
+			float rdelta, bdelta, gdelta;
+			
+			rdelta = newcolor.red - c.red;
+			bdelta = newcolor.blue - c.blue;
+			gdelta = newcolor.green - c.green;
+
+			if (sqrt (rdelta*rdelta + bdelta*bdelta + gdelta*gdelta) > 25.0) {
+				used_colors.push_back (newcolor);
+				return newcolor;
+			}
+		}
+
+		/* XXX need throttle here to make sure we don't spin for ever */
+	}
+}