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/*
* Graph.h - a QT widget for displaying and manipulating waveforms
*
* Copyright (c) 2006-2007 Andreas Brandmaier <andy/at/brandmaier/dot/de>
* 2008 Paul Giblock <drfaygo/at/gmail/dot/com>
*
* This file is part of LMMS - https://lmms.io
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
#ifndef GRAPH_H
#define GRAPH_H
#include <QWidget>
#include <QPixmap>
#include <QCursor>
#include "Model.h"
#include "ModelView.h"
#include "lmms_basics.h"
class graphModel;
class EXPORT Graph : public QWidget, public ModelView
{
Q_OBJECT
public:
enum graphStyle
{
NearestStyle,
LinearStyle,
LinearNonCyclicStyle,
BarStyle,
NumGraphStyles
};
Graph( QWidget * _parent, graphStyle _style = Graph::LinearStyle,
int _width = 132,
int _height = 104
);
virtual ~Graph();
void setForeground( const QPixmap & _pixmap );
void setGraphColor( const QColor );
inline graphModel * model()
{
return castModel<graphModel>();
}
inline graphStyle getGraphStyle()
{
return m_graphStyle;
}
inline void setGraphStyle( graphStyle _s )
{
m_graphStyle = _s;
update();
}
protected:
virtual void paintEvent( QPaintEvent * _pe );
virtual void dropEvent( QDropEvent * _de );
virtual void dragEnterEvent( QDragEnterEvent * _dee );
virtual void mousePressEvent( QMouseEvent * _me );
virtual void mouseMoveEvent( QMouseEvent * _me );
virtual void mouseReleaseEvent( QMouseEvent * _me );
protected slots:
void updateGraph( int _startPos, int _endPos );
void updateGraph();
private:
virtual void modelChanged();
void changeSampleAt( int _x, int _y );
void drawLineAt( int _x, int _y, int _lastx );
QPixmap m_foreground;
QColor m_graphColor;
graphStyle m_graphStyle;
bool m_mouseDown;
int m_lastCursorX;
} ;
class EXPORT graphModel : public Model
{
Q_OBJECT
public:
graphModel( float _min,
float _max,
int _size,
:: Model * _parent,
bool _default_constructed = false,
float _step = 0.0 );
virtual ~graphModel();
// TODO: saveSettings, loadSettings?
inline float minValue() const
{
return( m_minValue );
}
inline float maxValue() const
{
return( m_maxValue );
}
inline int length() const
{
return m_length;
}
inline const float * samples() const
{
return( m_samples.data() );
}
public slots:
void setRange( float _min, float _max );
void setLength( int _size );
void setSampleAt( int x, float val );
void setSamples( const float * _value );
void setWaveToSine();
void setWaveToTriangle();
void setWaveToSaw();
void setWaveToSquare();
void setWaveToNoise();
QString setWaveToUser( );
void smooth();
void smoothNonCyclic();
void normalize();
void invert();
void shiftPhase( int _deg );
void clearInvisible();
signals:
void lengthChanged();
void samplesChanged( int startPos, int endPos );
void rangeChanged();
private:
void drawSampleAt( int x, float val );
QVector<float> m_samples;
int m_length;
float m_minValue;
float m_maxValue;
float m_step;
friend class Graph;
};
#endif
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