Robin Gareus
4050ca5633
Copyright-holder and year information is extracted from git log. git history begins in 2005. So (C) from 1998..2005 is lost. Also some (C) assignment of commits where the committer didn't use --author.
90 lines
3.3 KiB
C
90 lines
3.3 KiB
C
/*
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* Copyright (C) 2010-2016 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2014-2019 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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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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#define NNOTES (127)
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#define OCTAVE_MIN (-1)
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#define OCTAVE_MAX (7)
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struct PKNote {
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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 last_key;
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gboolean monophonic;
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struct PKNote notes[NNOTES];
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/* Table used to translate from PC keyboard character to MIDI note number. */
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GHashTable* 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_monophonic (PianoKeyboard *pk, gboolean monophonic);
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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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G_END_DECLS
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#endif /* __PIANO_KEYBOARD_H__ */
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