Paul Davis
60f817b0d2
git-svn-id: svn://localhost/trunk/ardour2@47 d708f5d6-7413-0410-9779-e7cbd77b26cf
97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
/*
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Copyright (C) 2003 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#include <cstdlib>
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#include <cmath>
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#include <algorithm>
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#include <string>
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#include <list>
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#include <pbd/error.h>
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#include <gtkmm2ext/utils.h>
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#include <gtkmm2ext/selector.h>
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#include <gtkmm2ext/gtk_ui.h>
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#include <ardour/session.h>
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#include <ardour/utils.h>
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#include "public_editor.h"
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#include "axis_view.h"
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#include "i18n.h"
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using namespace Gtk;
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using namespace Gtkmm2ext;
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list<Gdk::Color> AxisView::used_colors;
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AxisView::AxisView (ARDOUR::Session& sess) : _session(sess)
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{
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_selected = false;
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}
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AxisView::~AxisView()
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{
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}
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Gdk::Color
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AxisView::unique_random_color()
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{
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Gdk::Color newcolor;
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while (1) {
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/* avoid neon/glowing tones by limiting them to the
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"inner section" (paler) of a color wheel/circle.
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*/
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const int32_t max_saturation = 48000; // 65535 would open up the whole color wheel
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newcolor.set_red (random() % max_saturation);
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newcolor.set_blue (random() % max_saturation);
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newcolor.set_green (random() % max_saturation);
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if (used_colors.size() == 0) {
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used_colors.push_back (newcolor);
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return newcolor;
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}
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for (list<Gdk::Color>::iterator i = used_colors.begin(); i != used_colors.end(); ++i) {
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Gdk::Color c = *i;
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float rdelta, bdelta, gdelta;
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rdelta = newcolor.get_red() - c.get_red();
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bdelta = newcolor.get_blue() - c.get_blue();
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gdelta = newcolor.get_green() - c.get_green();
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if (sqrt (rdelta*rdelta + bdelta*bdelta + gdelta*gdelta) > 25.0) {
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used_colors.push_back (newcolor);
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return newcolor;
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}
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}
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/* XXX need throttle here to make sure we don't spin for ever */
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}
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}
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