PlotArea Class Reference

#include <PlotArea.h>

Inheritance diagram for PlotArea:

Collaboration diagram for PlotArea:

List of all members.

Public Member Functions
	PlotArea ()
virtual	~PlotArea ()
Type	type () const
void	setBrush (QBrush brush)
QBrush	brush () const
void	setRect (double xLowerBound, double yLowerBound, double xUpperBound, double yUpperBound)
QRectF	rect () const
void	setXInterval (double lowerBound, double upperBound)
double	xIntervalLowerBound () const
double	xIntervalUpperBound () const
void	setYInterval (double lowerBound, double upperBound)
double	yIntervalLowerBound () const
double	yIntervalUpperBound () const
virtual int	rtti () const
virtual void	draw (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &canvasRect) const

---

Constructor & Destructor Documentation

PlotArea::PlotArea

(

)

  : QwtPlotItem( QwtText( "Area" ) )
{
  //qDebug( "PlotArea::PlotArea" );

  m_type = PlotArea::Rect;
  m_brush = QBrush( QColor( 255, 0, 0, 128 ) );
  m_xIntervalLowerBound = 0.0;
  m_xIntervalUpperBound = 0.0;
  m_yIntervalLowerBound = 0.0;
  m_yIntervalUpperBound = 0.0;

  setZ( 1000 );
}

PlotArea::~PlotArea

(

)

[virtual]

{
  //qDebug( "PlotArea::~PlotArea" );
}

---

Member Function Documentation

QBrush PlotArea::brush

(

)

const [inline]

Referenced by PlotSelector::selectionBrush().

{ return m_brush; }

void PlotArea::draw	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRect &	canvasRect
	)			const [virtual]

Reimplemented from QwtPlotItem.

{
  //qDebug( "PlotArea::draw" );

  painter->setBrush( m_brush );
  painter->setPen( QPen( Qt::NoPen ) );

  // Initial situation, don't draw
  if ( m_xIntervalLowerBound == 0.0
       && m_xIntervalUpperBound == 0.0
       && m_yIntervalLowerBound == 0.0
       && m_yIntervalUpperBound == 0.0 )
  {
    return;
  }

  if ( m_type == PlotArea::Rect )
  {
    int topLeftX = xMap.transform( m_rect.x() );
    int topLeftY = yMap.transform( m_rect.y() );
    int bottomRightX = xMap.transform( m_rect.bottomRight().x() );
    int bottomRightY = yMap.transform( m_rect.bottomRight().y() );
    // Always draw at least one pixel
    if ( topLeftX == bottomRightX )
    {
      bottomRightX += 1;
    }
    if ( topLeftY == bottomRightY )
    {
      bottomRightY += 1;
    }
    QRect rect( topLeftX, topLeftY, bottomRightX - topLeftX, topLeftY - bottomRightY );
    QwtPainter::drawRect( painter, rect );
  }
  else if ( m_type == PlotArea::XInterval )
  {
    int topLeftX = xMap.transform( m_xIntervalLowerBound );
    int bottomRightX = xMap.transform( m_xIntervalUpperBound );
    // Always draw at least one pixel
    if ( topLeftX == bottomRightX )
    {
      bottomRightX += 1;
    }
    QRect rect( topLeftX, canvasRect.y(), bottomRightX - topLeftX, canvasRect.height() );
    QwtPainter::drawRect( painter, rect );
  }
  else if ( m_type == PlotArea::YInterval )
  {
    int topLeftY = yMap.transform( m_yIntervalLowerBound );
    int bottomRightY = yMap.transform( m_yIntervalUpperBound );
    // Always draw at least one pixel
    if ( topLeftY == bottomRightY )
    {
      bottomRightY += 1;
    }
    QRect rect( canvasRect.y(), topLeftY, canvasRect.width(), bottomRightY - topLeftY );
    QwtPainter::drawRect( painter, rect );
  }
}

QRectF PlotArea::rect

(

)

const [inline]

Referenced by draw(), and PlotSelector::rect().

{ return m_rect; }

int PlotArea::rtti

(

)

const [virtual]

Reimplemented from QwtPlotItem.

{
  //qDebug( "PlotArea::rtti" );

  // Would have been better to append a type to the RttiValues enum
  return QwtPlotItem::Rtti_PlotUserItem + 1;
}

void PlotArea::setBrush

(

QBrush

brush

)

[inline]

Referenced by PlotSelector::setSelectionBrush().

{ m_brush = brush; }

void PlotArea::setRect	(	double	xLowerBound,
		double	yLowerBound,
		double	xUpperBound,
		double	yUpperBound
	)

Referenced by PlotSelector::eventFilter().

{
  //qDebug( "PlotArea::setRect" );

  m_type = PlotArea::Rect;

  if ( xLowerBound > xUpperBound )
  {
    double temp = xLowerBound;
    xLowerBound = xUpperBound;
    xUpperBound = temp;
  }
  if ( yLowerBound > yUpperBound )
  {
    double temp = yLowerBound;
    yLowerBound = yUpperBound;
    yUpperBound = temp;
  }

  m_rect = QRectF( xLowerBound, yUpperBound,
                   xUpperBound - xLowerBound, yUpperBound - yLowerBound );
}

void PlotArea::setXInterval	(	double	lowerBound,
		double	upperBound
	)

Referenced by PlotSelector::eventFilter().

{
  //qDebug( "PlotArea::setXInterval" );

  m_type = PlotArea::XInterval;

  if ( lowerBound < upperBound )
  {
    m_xIntervalLowerBound = lowerBound;
    m_xIntervalUpperBound = upperBound;
  }
  else
  {
    m_xIntervalLowerBound = upperBound;
    m_xIntervalUpperBound = lowerBound;
  }
}

void PlotArea::setYInterval	(	double	lowerBound,
		double	upperBound
	)

Referenced by PlotSelector::eventFilter().

{
  //qDebug( "PlotArea::setYInterval" );

  m_type = PlotArea::YInterval;

  if ( lowerBound < upperBound )
  {
    m_yIntervalLowerBound = lowerBound;
    m_yIntervalUpperBound = upperBound;
  }
  else
  {
    m_yIntervalLowerBound = upperBound;
    m_yIntervalUpperBound = lowerBound;
  }
}

Type PlotArea::type

(

)

const [inline]

{ return m_type; }

double PlotArea::xIntervalLowerBound

(

)

const [inline]

Referenced by PlotSelector::xIntervalLowerBound().

{ return m_xIntervalLowerBound; }

double PlotArea::xIntervalUpperBound

(

)

const [inline]

Referenced by PlotSelector::xIntervalUpperBound().

{ return m_xIntervalUpperBound; }

double PlotArea::yIntervalLowerBound

(

)

const [inline]

Referenced by PlotSelector::yIntervalLowerBound().

{ return m_yIntervalLowerBound; }

double PlotArea::yIntervalUpperBound

(

)

const [inline]

Referenced by PlotSelector::yIntervalUpperBound().

{ return m_yIntervalUpperBound; }

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The documentation for this class was generated from the following files:

• PlotArea.h
• PlotArea.cpp