4d57549bbb
Submitted by: Marien Zwart git-svn-id: svn://svn.code.sf.net/p/jack-keyboard/code/trunk@28 1fa2bf75-7d80-4145-9e94-f9b4e25a1cb2
106 lines
3.9 KiB
C
106 lines
3.9 KiB
C
/*-
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* Copyright (c) 2007, 2008 Edward Tomasz Napierała <trasz@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __PIANO_KEYBOARD_H__
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#define __PIANO_KEYBOARD_H__
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#include <glib.h>
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#include <gtk/gtkdrawingarea.h>
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G_BEGIN_DECLS
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#define TYPE_PIANO_KEYBOARD (piano_keyboard_get_type ())
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#define PIANO_KEYBOARD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TYPE_PIANO_KEYBOARD, PianoKeyboard))
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#define PIANO_KEYBOARD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), TYPE_PIANO_KEYBOARD, PianoKeyboardClass))
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#define IS_PIANO_KEYBOARD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TYPE_PIANO_KEYBOARD))
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#define IS_PIANO_KEYBOARD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), TYPE_PIANO_KEYBOARD))
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#define PIANO_KEYBOARD_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), TYPE_PIANO_KEYBOARD, PianoKeyboardClass))
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typedef struct _PianoKeyboard PianoKeyboard;
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typedef struct _PianoKeyboardClass PianoKeyboardClass;
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/* A note about note numbers:
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0 = C-1 (midi minmum)
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21 = A0 (piano minimum)
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60 = C4 (middle C)
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108 = C7 (piano maximum)
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127 = G9 (midi maximum)
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*/
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#define NNOTES 128
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#define PIANO_MIN_NOTE 21
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#define PIANO_MAX_NOTE 108
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#define OCTAVE_MIN -1
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#define OCTAVE_MAX 7
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struct Note {
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int pressed; /* 1 if key is in pressed down state. */
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int sustained; /* 1 if note is sustained. */
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int x; /* Distance between the left edge of the key
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* and the left edge of the widget, in pixels. */
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int w; /* Width of the key, in pixels. */
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int h; /* Height of the key, in pixels. */
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int white; /* 1 if key is white; 0 otherwise. */
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};
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struct _PianoKeyboard
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{
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GtkDrawingArea da;
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int maybe_stop_sustained_notes;
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int sustain_new_notes;
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int enable_keyboard_cue;
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int octave;
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int widget_margin;
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int note_being_pressed_using_mouse;
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int min_note;
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int max_note;
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volatile struct Note notes[NNOTES];
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/* Table used to translate from PC keyboard character to MIDI note number. */
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GArray *key_bindings;
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};
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struct _PianoKeyboardClass
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{
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GtkDrawingAreaClass parent_class;
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};
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GType piano_keyboard_get_type (void) G_GNUC_CONST;
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GtkWidget* piano_keyboard_new (void);
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void piano_keyboard_sustain_press (PianoKeyboard *pk);
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void piano_keyboard_sustain_release (PianoKeyboard *pk);
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void piano_keyboard_set_note_on (PianoKeyboard *pk, int note);
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void piano_keyboard_set_note_off (PianoKeyboard *pk, int note);
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void piano_keyboard_set_keyboard_cue (PianoKeyboard *pk, int enabled);
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void piano_keyboard_set_octave (PianoKeyboard *pk, int octave);
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gboolean piano_keyboard_set_keyboard_layout (PianoKeyboard *pk, const char *layout);
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void piano_keyboard_enable_all_midi_notes(PianoKeyboard* pk);
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G_END_DECLS
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#endif /* __PIANO_KEYBOARD_H__ */
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