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git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@23 0778d3d1-df1d-0410-868b-ea421aaaa00d
161 lines
3.2 KiB
C++
161 lines
3.2 KiB
C++
/*
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* timeline.h - class timeLine, representing a time-line with position marker
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*
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* Linux MultiMedia Studio
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* Copyright (c) 2004-2005 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (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 GNU
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* 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
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef _TIMELINE_H
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#define _TIMELINE_H
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#include "qt3support.h"
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#ifdef QT4
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#include <QWidget>
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#else
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#include <qwidget.h>
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#endif
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#include "song_editor.h"
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class QPixmap;
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class nStateButton;
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class timeLine : public QWidget
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{
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Q_OBJECT
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public:
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timeLine( int _xoff, int _yoff, float _ppt, songEditor::playPos & _pos,
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const midiTime & _begin, QWidget * _parent );
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~timeLine();
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inline songEditor::playPos & pos( void )
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{
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return( m_pos );
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}
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enum behaviourAtStopStates
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{
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BACK_TO_ZERO, BACK_TO_START, KEEP_STOP_POSITION
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} ;
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behaviourAtStopStates behaviourAtStop( void ) const;
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bool loopPointsEnabled( void ) const;
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inline const midiTime & loopBegin( void ) const
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{
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return( ( m_loopPos[0] < m_loopPos[1] ) ?
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m_loopPos[0] : m_loopPos[1] );
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}
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inline const midiTime & loopEnd( void ) const
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{
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return( ( m_loopPos[0] > m_loopPos[1] ) ?
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m_loopPos[0] : m_loopPos[1] );
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}
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inline void savePos( const midiTime & _pos )
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{
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m_savedPos = _pos;
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}
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inline const midiTime & savedPos( void ) const
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{
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return( m_savedPos );
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}
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inline void setPixelsPerTact( float _ppt )
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{
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m_ppt = _ppt;
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update();
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}
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public slots:
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void updatePosition( const midiTime & = 0 );
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void toggleLoopPoints( int _n );
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protected:
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virtual void paintEvent( QPaintEvent * _pe );
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virtual void mousePressEvent( QMouseEvent * _me );
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virtual void mouseMoveEvent( QMouseEvent * _me );
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virtual void mouseReleaseEvent( QMouseEvent * _me );
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private:
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inline int markerX( const midiTime & _t ) const
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{
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return( m_xOffset + static_cast<int>( ( _t - m_begin ) *
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m_ppt / 64.0f ) );
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}
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static QPixmap * s_timeLinePixmap;
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static QPixmap * s_posMarkerPixmap;
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static QPixmap * s_loopPointPixmap;
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nStateButton * m_autoScroll;
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nStateButton * m_loopPoints;
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nStateButton * m_behaviourAtStop;
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int m_xOffset;
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int m_posMarkerX;
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float m_ppt;
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songEditor::playPos & m_pos;
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const midiTime & m_begin;
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midiTime m_loopPos[2];
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midiTime m_savedPos;
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enum actions
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{
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NONE, MOVE_POS_MARKER, MOVE_LOOP_BEGIN, MOVE_LOOP_END
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} m_action;
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int m_moveXOff;
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enum autoScrollStates
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{
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AUTOSCROLL_ENABLED, AUTOSCROLL_DISABLED
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} ;
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enum loopPointStates
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{
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LOOP_POINTS_DISABLED, LOOP_POINTS_ENABLED
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} ;
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signals:
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void positionChanged( const midiTime & _t );
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} ;
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#endif
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