2 Copyright (C) 2003 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include "pbd/error.h"
30 #include <gtkmm2ext/utils.h>
31 #include <gtkmm2ext/selector.h>
32 #include <gtkmm2ext/gtk_ui.h>
34 #include "ardour/session.h"
35 #include "ardour/utils.h"
37 #include "public_editor.h"
38 #include "axis_view.h"
43 using namespace Gtkmm2ext;
45 list<Gdk::Color> AxisView::used_colors;
47 AxisView::AxisView (ARDOUR::Session& sess) : _session(sess)
50 _marked_for_display = false;
59 AxisView::unique_random_color()
65 /* avoid neon/glowing tones by limiting them to the
66 "inner section" (paler) of a color wheel/circle.
69 const int32_t max_saturation = 48000; // 65535 would open up the whole color wheel
71 newcolor.set_red (random() % max_saturation);
72 newcolor.set_blue (random() % max_saturation);
73 newcolor.set_green (random() % max_saturation);
75 if (used_colors.size() == 0) {
76 used_colors.push_back (newcolor);
80 for (list<Gdk::Color>::iterator i = used_colors.begin(); i != used_colors.end(); ++i) {
82 float rdelta, bdelta, gdelta;
84 rdelta = newcolor.get_red() - c.get_red();
85 bdelta = newcolor.get_blue() - c.get_blue();
86 gdelta = newcolor.get_green() - c.get_green();
88 if (sqrt (rdelta*rdelta + bdelta*bdelta + gdelta*gdelta) > 25.0) {
89 used_colors.push_back (newcolor);
94 /* XXX need throttle here to make sure we don't spin for ever */