gtk2_ardour/led.h

   1 /*
   2     Copyright (C) 2010 Paul Davis
   3
   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.
   8
   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.
  13
  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.
  17
  18 */
  19
  20 #ifndef __gtk2_ardour_led_h__
  21 #define __gtk2_ardour_led_h__
  22
  23 #include <stdint.h>
  24
  25 #include "cairo_widget.h"
  26
  27 class LED : public CairoWidget
  28 {
  29   public:
  30         LED ();
  31         virtual ~LED ();
  32
  33         void set_visual_state (int32_t s);
  34         int32_t visual_state() const { return _visual_state; }
  35         void set_diameter (float);
  36
  37   protected:
  38         void render (cairo_t *);
  39         void on_size_request (Gtk::Requisition* req);
  40         void on_realize ();
  41
  42   private:
  43         int32_t _visual_state;
  44         bool  _active;
  45         float _diameter;
  46         bool  _fixed_diameter;
  47         float _red;
  48         float _green;
  49         float _blue;
  50
  51         void set_colors_from_style ();
  52 };
  53
  54 #endif /* __gtk2_ardour_led_h__ */