60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
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/*
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* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __gtkardour_gauge_h__
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#define __gtkardour_gauge_h__
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#include <pangomm.h>
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#include "gtkmm2ext/cairo_widget.h"
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class ArdourGauge : public CairoWidget
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{
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public:
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ArdourGauge (std::string const& max_text = "00.0%");
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virtual ~ArdourGauge ();
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protected:
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enum Status {
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Level_OK, /* green */
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Level_WARN, /* yellow */
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Level_CRIT /* red */
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};
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/* gauge's background, indicate alarming conditions eg. xrun */
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virtual bool alert () const { return false; }
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/* guage inidicator color */
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virtual Status indicator () const = 0;
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/* gauge level 0 <= level <= 1 */
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virtual float level () const = 0;
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virtual std::string tooltip_text () = 0;
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void update ();
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void update (std::string const &);
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private:
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void on_size_request (Gtk::Requisition*);
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void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
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Glib::RefPtr<Pango::Layout> _layout;
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};
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#endif
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