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/*
Copyright (C) 2012 Paul Davis
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __PIANO_KEYBOARD_H__
#define __PIANO_KEYBOARD_H__
#include <glib.h>
#include <gtk/gtkdrawingarea.h>
G_BEGIN_DECLS
#define TYPE_PIANO_KEYBOARD (piano_keyboard_get_type ())
#define PIANO_KEYBOARD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TYPE_PIANO_KEYBOARD, PianoKeyboard))
#define PIANO_KEYBOARD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), TYPE_PIANO_KEYBOARD, PianoKeyboardClass))
#define IS_PIANO_KEYBOARD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TYPE_PIANO_KEYBOARD))
#define IS_PIANO_KEYBOARD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), TYPE_PIANO_KEYBOARD))
#define PIANO_KEYBOARD_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), TYPE_PIANO_KEYBOARD, PianoKeyboardClass))
typedef struct _PianoKeyboard PianoKeyboard;
typedef struct _PianoKeyboardClass PianoKeyboardClass;
#define NNOTES 127
#define OCTAVE_MIN -1
#define OCTAVE_MAX 7
struct PKNote {
int pressed; /* 1 if key is in pressed down state. */
int sustained; /* 1 if note is sustained. */
int x; /* Distance between the left edge of the key
* and the left edge of the widget, in pixels. */
int w; /* Width of the key, in pixels. */
int h; /* Height of the key, in pixels. */
int white; /* 1 if key is white; 0 otherwise. */
};
struct _PianoKeyboard
{
GtkDrawingArea da;
int maybe_stop_sustained_notes;
int sustain_new_notes;
int enable_keyboard_cue;
int octave;
int widget_margin;
int note_being_pressed_using_mouse;
int last_key;
gboolean monophonic;
struct PKNote notes[NNOTES];
/* Table used to translate from PC keyboard character to MIDI note number. */
GHashTable *key_bindings;
};
struct _PianoKeyboardClass
{
GtkDrawingAreaClass parent_class;
};
GType piano_keyboard_get_type (void) G_GNUC_CONST;
GtkWidget* piano_keyboard_new (void);
void piano_keyboard_sustain_press (PianoKeyboard *pk);
void piano_keyboard_sustain_release (PianoKeyboard *pk);
void piano_keyboard_set_note_on (PianoKeyboard *pk, int note);
void piano_keyboard_set_note_off (PianoKeyboard *pk, int note);
void piano_keyboard_set_keyboard_cue (PianoKeyboard *pk, int enabled);
void piano_keyboard_set_monophonic (PianoKeyboard *pk, gboolean monophonic);
void piano_keyboard_set_octave (PianoKeyboard *pk, int octave);
gboolean piano_keyboard_set_keyboard_layout (PianoKeyboard *pk, const char *layout);
G_END_DECLS
#endif /* __PIANO_KEYBOARD_H__ */
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