/*
 * Copyright (C) 2009, 2010 Hermann Meyer, James Warden, Andreas Degert
 *
 * 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.
 *
 * --------------------------------------------------------------------------
 *
 * Class declaration for a level display
 *
 * (Code shamelessly stolen from Ardour by Paul Davis, thanks man!)
 *
 * --------------------------------------------------------------------------
 */

#ifndef __GX_FAST_METER_H__
#define __GX_FAST_METER_H__

#include <gtk/gtk.h>

G_BEGIN_DECLS

#define GX_TYPE_FAST_METER            (gx_fast_meter_get_type())
#define GX_FAST_METER(obj)	           (G_TYPE_CHECK_INSTANCE_CAST((obj), GX_TYPE_FAST_METER, GxFastMeter))
#define GX_IS_FAST_METER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), GX_TYPE_FAST_METER))
#define GX_FAST_METER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),  GX_TYPE_FAST_METER, GxFastMeterClass))
#define GX_IS_FAST_METER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),  GX_TYPE_FAST_METER))

typedef struct _GxFastMeter GxFastMeter;
typedef struct _GxFastMeterClass GxFastMeterClass;

struct _GxFastMeter {
	GtkDrawingArea parent;

	GdkPixbuf*    pixbuf;
	gint          top_of_meter;
	GdkRectangle  last_peak_rect;

	int hold_cnt;
	int hold_state;

	float         current_level;
	float         current_peak;
    float         old_peak_db;
	gint dimen, clr0, clr1, clr2, clr3;
};

struct _GxFastMeterClass {
	GtkDrawingAreaClass parent_class;
};

GType gx_fast_meter_get_type(void);

/* --------- public exposed API ---------  */
GtkWidget* gx_fast_meter_new(long hold, gulong dimen, int clr0, int clr1, int clr2, int clr3);

void  gx_fast_meter_set            (GxFastMeter* fastmeter, gdouble lvl);
void  gx_fast_meter_set_by_power   (GxFastMeter* fastmeter, gdouble lvl);
void  gx_fast_meter_clear          (GxFastMeter* fastmeter);

void  gx_fast_meter_set_hold_count (GxFastMeter* fastmeter, gint val);

G_END_DECLS

#endif /* __GX_FAST_METER_H__ */
