src/calf/ctl_tube.h

   1 /* Calf DSP Library
   2  * A tube widget for overdrive-type plugins (saturator etc).
   3  *
   4  * Copyright (C) 2010-2012 Markus Schmidt and others
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General
  17  * Public License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #ifndef CALF_CTL_TUBE_H
  23 #define CALF_CTL_TUBE_H
  24
  25 #include <gtk/gtk.h>
  26
  27 G_BEGIN_DECLS
  28
  29 #define CALF_TYPE_TUBE           (calf_tube_get_type())
  30 #define CALF_TUBE(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), CALF_TYPE_TUBE, CalfTube))
  31 #define CALF_IS_TUBE(obj)        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CALF_TYPE_TUBE))
  32 #define CALF_TUBE_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST ((klass),  CALF_TYPE_TUBE, CalfTubeClass))
  33 #define CALF_IS_TUBE_CLASS(obj)  (G_TYPE_CHECK_CLASS_TYPE ((klass),  CALF_TYPE_TUBE))
  34 #define CALF_TUBE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),  CALF_TYPE_TUBE, CalfTubeClass))
  35
  36 struct CalfTube
  37 {
  38     GtkDrawingArea parent;
  39     int size;
  40     int direction;
  41     float value;
  42     float last_value;
  43     float tube_falloff;
  44     bool falling;
  45     float last_falloff;
  46     long last_falltime;
  47     cairo_surface_t *cache_surface;
  48 };
  49
  50 struct CalfTubeClass
  51 {
  52     GtkDrawingAreaClass parent_class;
  53 };
  54
  55 extern GtkWidget *calf_tube_new();
  56 extern GType calf_tube_get_type();
  57 extern void calf_tube_set_value(CalfTube *tube, float value);
  58
  59 G_END_DECLS
  60
  61 #endif