145 lines
3.1 KiB
C
145 lines
3.1 KiB
C
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/*******************************************************************************/
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/* Copyright (C) 2007-2008 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* 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; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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/* Higher level event interface, supporting doublely-linked list,
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marking, selection, and linking of note pairs. */
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#include "event.H"
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#include <stdio.h>
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#include <string.h>
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void
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event::_init ( void )
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{
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_link = _next = _prev = NULL;
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_selected = 0;
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}
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event::event ( void )
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{
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_init();
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}
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event::~event ( void )
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{
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_link = _next = _prev = NULL;
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}
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/* copy constructor */
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event::event ( const event &e ) : midievent( e )
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{
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_link = _next = _prev = NULL;
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_selected = e._selected;
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}
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event::event ( const midievent &e ) : midievent( e )
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{
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_init();
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}
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void
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event::link ( event *event )
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{
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if ( event == NULL )
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{
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if ( _link )
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{
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_link->_link = NULL;
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_link = NULL;
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}
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return;
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}
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_link = event;
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_link->_link = this;
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}
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event *
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event::link ( void ) const
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{
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return _link;
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}
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bool
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event::linked ( void ) const
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{
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return _link != NULL;
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}
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void
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event::select ( void )
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{
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_selected = 1;
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if ( _link )
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_link->_selected = 1;
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}
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void
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event::deselect ( void )
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{
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_selected = 0;
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if ( _link )
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_link->_selected = 0;
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}
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bool
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event::selected ( int n ) const
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{
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return _selected == n;
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}
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bool
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event::selected ( void ) const
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{
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return _selected == 1;
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}
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/* override this so we can update linked event */
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void
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event::note ( char note )
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{
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midievent::note( note );
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if ( _link )
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_link->midievent::note( note );
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}
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/* stupid C++ makes us override the all polymorphic functions... */
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unsigned char
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event::note ( void ) const
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{
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return midievent::note();
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}
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tick_t
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event::note_duration ( void ) const
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{
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return _link ? _link->timestamp() - timestamp() : 0;
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}
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void
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event::note_duration ( tick_t l )
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{
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if ( _link )
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_link->timestamp( timestamp() + l );
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}
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