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/*
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.
*/
#include <cstdlib>
#include <cmath>
#include <algorithm>
#include <string>
#include <list>
#include <pbd/error.h>
#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/selector.h>
#include <gtkmm2ext/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 Gtkmm2ext;
list<Gdk::Color> AxisView::used_colors;
AxisView::AxisView (ARDOUR::Session& sess) : _session(sess)
{
_selected = false;
_marked_for_display = false;
}
AxisView::~AxisView()
{
}
Gdk::Color
AxisView::unique_random_color()
{
Gdk::Color 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.set_red (random() % max_saturation);
newcolor.set_blue (random() % max_saturation);
newcolor.set_green (random() % max_saturation);
if (used_colors.size() == 0) {
used_colors.push_back (newcolor);
return newcolor;
}
for (list<Gdk::Color>::iterator i = used_colors.begin(); i != used_colors.end(); ++i) {
Gdk::Color c = *i;
float rdelta, bdelta, gdelta;
rdelta = newcolor.get_red() - c.get_red();
bdelta = newcolor.get_blue() - c.get_blue();
gdelta = newcolor.get_green() - c.get_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 */
}
}
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