src/calfwidgets/vumeter.h

   1 /* Calf DSP Library
   2  * A LED-line-style volume meter widget
   3  *
   4  * Copyright (C) 2007-2008 Krzysztof Foltman
   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., 59 Temple Place, Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21 #ifndef __CALF_VUMETER_CTL
  22 #define __CALF_VUMETER_CTL
  23
  24 #include <gtk/gtk.h>
  25
  26 G_BEGIN_DECLS
  27
  28 #define CALF_TYPE_VU_METER          (calf_vu_meter_get_type())
  29 #define CALF_VU_METER(obj)          (G_TYPE_CHECK_INSTANCE_CAST ((obj), CALF_TYPE_VU_METER, CalfVUMeter))
  30 #define CALF_IS_VU_METER(obj)       (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CALF_TYPE_VU_METER))
  31 #define CALF_VU_METER_CLASS(klass)  (G_TYPE_CHECK_CLASS_CAST ((klass),  CALF_TYPE_VU_METER, CalfVUMeterClass))
  32 #define CALF_IS_VU_METER_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass),  CALF_TYPE_VU_METER))
  33
  34 typedef enum
  35 {
  36     CALF_VU_METER_MODE_STANDARD,
  37     CALF_VU_METER_MODE_MONOCHROME,
  38     CALF_VU_METER_MODE_MONOCHROME_REVERSE
  39 } CalfVUMeterMode;
  40
  41 struct _CalfVUMeter
  42 {
  43     GtkWidget parent;
  44     CalfVUMeterMode mode;
  45     float value;
  46 };
  47
  48 struct _CalfVUMeterClass
  49 {
  50     GtkWidgetClass parent_class;
  51 };
  52
  53 typedef struct _CalfVUMeter CalfVUMeter;
  54 typedef struct _CalfVUMeterClass CalfVUMeterClass;
  55
  56 GType calf_vu_meter_get_type();
  57
  58 GtkWidget *calf_vu_meter_new ();
  59 void calf_vu_meter_set_value (CalfVUMeter *meter, float value);
  60 float calf_vu_meter_get_value (CalfVUMeter *meter);
  61 void calf_vu_meter_set_mode (CalfVUMeter *meter, CalfVUMeterMode mode);
  62 CalfVUMeterMode calf_vu_meter_get_mode (CalfVUMeter *meter);
  63
  64 G_END_DECLS
  65
  66 #endif