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git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@767 0778d3d1-df1d-0410-868b-ea421aaaa00d
151 lines
3.3 KiB
C++
151 lines
3.3 KiB
C++
/*
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* graph.h - a QT widget for displaying and manipulating waveforms
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*
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* Copyright (c) 2006-2007 Andreas Brandmaier <andy/at/brandmaier/dot/de>
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* 2008 Paul Giblock <drfaygo/at/gmail/dot/com>
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*
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* This file is part of Linux MultiMedia Studio - http://lmms.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., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef _GRAPH_H
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#define _GRAPH_H
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#include <QtGui/QWidget>
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#include <QtGui/QPixmap>
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#include <QtGui/QCursor>
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#include "mv_base.h"
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#include "types.h"
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class graphModel;
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class track;
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class graph : public QWidget, public modelView
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{
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Q_OBJECT
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public:
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graph( QWidget * _parent );
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virtual ~graph();
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void setForeground( const QPixmap & _pixmap );
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// void loadSampleFromFile( const QString & _filename );
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virtual inline graphModel * model( void ) {
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return castModel<graphModel>();
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}
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protected:
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virtual void paintEvent( QPaintEvent * _pe );
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virtual void dropEvent( QDropEvent * _de );
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virtual void dragEnterEvent( QDragEnterEvent * _dee );
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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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protected slots:
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void updateGraph( Uint32 _startPos, Uint32 _endPos );
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void updateGraph( void );
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private:
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virtual void modelChanged( void );
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void changeSampleAt(int _x, int _y);
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QPixmap m_foreground;
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graphModel * m_graphModel;
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bool m_mouseDown;
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int m_lastCursorX;
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} ;
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class graphModel : public model
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{
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Q_OBJECT
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public:
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graphModel( float _min,
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float _max,
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Uint32 _size,
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:: model * _parent, track * _track = NULL,
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bool _default_constructed = FALSE );
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virtual ~graphModel();
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// TODO: saveSettings, loadSettings?
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inline float minValue( void ) const
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{
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return( m_minValue );
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}
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inline float maxValue( void ) const
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{
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return( m_maxValue );
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}
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inline Uint32 length( void ) const
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{
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return( m_samples.count() );
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}
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inline const float* samples( void ) const
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{
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return( m_samples.data() );
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}
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public slots:
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void setRange( float _min, float _max );
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void setLength( Uint32 _size );
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void setSampleAt( Uint32 _samplePos, float _value );
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void setSamples( const float * _value );
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void setWaveToSine( void );
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void setWaveToTriangle( void );
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void setWaveToSaw( void );
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void setWaveToSquare( void );
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void setWaveToNoise( void );
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//void setWaveToUser( );
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void smooth( void );
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void normalize( void );
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signals:
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void lengthChanged( void );
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void samplesChanged( Uint32 startPos, Uint32 endPos );
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void rangeChanged( void );
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private:
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QVector<float> m_samples;
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float m_minValue;
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float m_maxValue;
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friend class graph;
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};
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#endif
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