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Viewing changes to gtk2_ardour/gtk_pianokeyboard.h

  • Committer: Package Import Robot
  • Author(s): Felipe Sateler
  • Date: 2013-09-21 19:05:02 UTC
  • Revision ID: package-import@ubuntu.com-20130921190502-8gsftrku6jnzhd7v
Tags: upstream-3.4~dfsg
Import upstream version 3.4~dfsg

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gtk2_ardour/gtk_pianokeyboard.h
 
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/*
 
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    Copyright (C) 2012 Paul Davis 
 
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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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    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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    You should have received a copy of the GNU General Public License
 
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    along with this program; if not, write to the Free Software
 
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    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, 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 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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        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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        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_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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