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/*
* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __gtkardour_gauge_h__
#define __gtkardour_gauge_h__
#include <pangomm.h>
#include "gtkmm2ext/cairo_widget.h"
class ArdourGauge : public CairoWidget
{
public:
ArdourGauge (std::string const& max_text = "00.0%");
virtual ~ArdourGauge ();
void blink (bool onoff);
protected:
enum Status {
Level_OK, /* green */
Level_WARN, /* yellow */
Level_CRIT /* red */
};
/* gauge's background, indicate alarming conditions eg. xrun */
virtual bool alert () const { return false; }
/* guage inidicator color */
virtual Status indicator () const = 0;
/* gauge level 0 <= level <= 1 */
virtual float level () const = 0;
virtual std::string tooltip_text () = 0;
void update ();
void update (std::string const &);
private:
void on_size_request (Gtk::Requisition*);
void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
Glib::RefPtr<Pango::Layout> _layout;
bool _blink;
};
#endif
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