Shows a histogram in a Qwt_Plot and a report (selectable) in a QTextEdit Makes the data Values from a itk::histogram suitable for a Qwt_Plot. Offers zoom possibility. A marker can be set and shows the frequency at his position. More...

#include <QmitkHistogramWidget.h>

Collaboration diagram for QmitkHistogramWidget:

[legend]

List of all members.

Public Types
typedef mitk::Image::HistogramType	HistogramType
Public Member Functions
	QmitkHistogramWidget (QWidget *parent=0, bool showreport=false)
virtual	~QmitkHistogramWidget ()
void	SetHistogram (HistogramType::ConstPointer histogram)
void	SetHistogram (mitk::Image *mitkImage)
void	SetReport (std::string report)
double	GetMarkerPosition ()
Protected Slots
void	OnSelect (const QwtDoublePoint &pos)
Protected Member Functions
double	Round (double val)
void	InitializeMarker ()
void	InitializeZoomer ()
Protected Attributes
QwtPlot *	m_Plot
QTextEdit *	m_Textedit
QwtPlotMarker *	m_Marker
QwtPlotPicker *	m_Picker
QwtPlotZoomer *	m_Zoomer
QmitkHistogram *	m_Histogram

Detailed Description

Shows a histogram in a Qwt_Plot and a report (selectable) in a QTextEdit Makes the data Values from a itk::histogram suitable for a Qwt_Plot. Offers zoom possibility. A marker can be set and shows the frequency at his position.

Definition at line 41 of file QmitkHistogramWidget.h.

Member Typedef Documentation

typedef mitk::Image::HistogramType QmitkHistogramWidget::HistogramType

Definition at line 51 of file QmitkHistogramWidget.h.

Constructor & Destructor Documentation

QmitkHistogramWidget::QmitkHistogramWidget	(	QWidget *	parent = `0`,
		bool	showreport = `false`
	)

Definition at line 33 of file QmitkHistogramWidget.cpp.

References QwtPicker::AlwaysOn, QwtPlotItem::attach(), QwtPlot::canvas(), QwtPlotGrid::enableXMin(), QwtPlotGrid::enableYMin(), m_Picker, m_Plot, m_Textedit, QwtPicker::NoRubberBand, OnSelect(), QwtPicker::PointSelection, QwtPlot::setCanvasBackground(), QwtText::setFont(), QwtPlotGrid::setMajPen(), QwtPlotGrid::setMinPen(), QwtPlot::setTitle(), QwtTextLabel::text(), QwtPlot::titleLabel(), QwtPlot::xBottom, and QwtPlot::yLeft.

{
  QBoxLayout *layout = new QVBoxLayout(this);

  //***histogram***

  QGroupBox *hgroupbox = new QGroupBox("", this);

  hgroupbox->setMinimumSize(900, 400);

  m_Plot = new QwtPlot(hgroupbox);
  m_Plot->setCanvasBackground(QColor(Qt::white));
  m_Plot->setTitle("Histogram");
  QwtText text = m_Plot->titleLabel()->text();
  text.setFont(QFont("Helvetica", 12, QFont::Normal));

  QwtPlotGrid *grid = new QwtPlotGrid;
  grid->enableXMin(true);
  grid->enableYMin(true);
  grid->setMajPen(QPen(Qt::black, 0, Qt::DotLine));
  grid->setMinPen(QPen(Qt::gray, 0 , Qt::DotLine));
  grid->attach(m_Plot);

  layout->addWidget(hgroupbox);

  layout->setSpacing(20);

  if (showreport == true)
  {
    //***report***
    QGroupBox *rgroupbox = new QGroupBox("", this);

    rgroupbox->setMinimumSize(900, 400);

    QLabel *label = new QLabel("Gray  Value  Analysis", rgroupbox);
    label->setAlignment(Qt::AlignHCenter);
    label->setFont(QFont("Helvetica", 14, QFont::Bold));

    m_Textedit = new QTextEdit(rgroupbox);
    m_Textedit->setFont(QFont("Helvetica", 12, QFont::Normal));
    m_Textedit->setReadOnly(true);

    layout->addWidget(rgroupbox);
  }

  m_Picker = new QwtPlotPicker(QwtPlot::xBottom, QwtPlot::yLeft,
    QwtPicker::PointSelection, 
    QwtPlotPicker::NoRubberBand, QwtPicker::AlwaysOn, 
    m_Plot->canvas());

  connect(m_Picker, SIGNAL(selected(const QwtDoublePoint &)),
    SLOT(OnSelect(const QwtDoublePoint &)));
}

QmitkHistogramWidget::~QmitkHistogramWidget ( ) [virtual]

Definition at line 87 of file QmitkHistogramWidget.cpp.

{

}

Member Function Documentation

double QmitkHistogramWidget::GetMarkerPosition ( )

Definition at line 174 of file QmitkHistogramWidget.cpp.

References m_Marker, and QwtPlotMarker::xValue().

{
  return m_Marker->xValue();
}

void QmitkHistogramWidget::InitializeMarker ( ) [protected]

Definition at line 140 of file QmitkHistogramWidget.cpp.

References QwtPlotItem::attach(), QwtSymbol::Diamond, m_Marker, m_Plot, QwtPlotMarker::setLabelAlignment(), QwtPlotMarker::setLinePen(), QwtPlotMarker::setLineStyle(), QwtPlotMarker::setSymbol(), QwtPlotMarker::setXValue(), and QwtPlotMarker::VLine.

Referenced by SetHistogram().

{
  m_Marker = new QwtPlotMarker();
  m_Marker->setXValue(0.);
  m_Marker->setLineStyle(QwtPlotMarker::VLine);
  m_Marker->setLabelAlignment(Qt::AlignHCenter | Qt::AlignRight);
  m_Marker->setLinePen(QPen(QColor(200,150,0), 3, Qt::SolidLine));
  m_Marker->setSymbol( QwtSymbol(QwtSymbol::Diamond, 
    QColor(Qt::red), QColor(Qt::red), QSize(10,10)));
  m_Marker->attach(m_Plot);
}

void QmitkHistogramWidget::InitializeZoomer ( ) [protected]

Definition at line 153 of file QmitkHistogramWidget.cpp.

References QwtPlot::canvas(), m_Plot, m_Zoomer, QwtPicker::RectSelection, QwtPicker::setRubberBandPen(), QwtPlotZoomer::setSelectionFlags(), QwtPicker::setTrackerPen(), QwtPlot::xBottom, and QwtPlot::yLeft.

Referenced by SetHistogram().

{
  m_Zoomer = new QwtPlotZoomer(m_Plot->xBottom, m_Plot->yLeft, m_Plot->canvas());
  m_Zoomer->setRubberBandPen(QPen(Qt::red, 2, Qt::DotLine));
  m_Zoomer->setTrackerPen(QPen(Qt::red));
  m_Zoomer->setSelectionFlags(QwtPlotZoomer::RectSelection);
}

void QmitkHistogramWidget::OnSelect ( const QwtDoublePoint & pos ) [protected, slot]

Definition at line 161 of file QmitkHistogramWidget.cpp.

References m_Marker, m_Plot, QwtPlot::replot(), Round(), QwtText::setBackgroundBrush(), QwtText::setFont(), QwtPlotMarker::setLabel(), QwtPlotMarker::setXValue(), and QwtDoublePoint::x().

Referenced by QmitkHistogramWidget().

{
  m_Marker->setXValue( this->Round(pos.x()) );
  //unsigned int count = (unsigned int)(m_Histogram->data().value(pos.x()));
  QString str = QString( "%1" )
    .arg( (int)(this->Round(pos.x())), 0, 10 );
  QwtText text(str);
  text.setBackgroundBrush(QColor(200,150,0));
  text.setFont(QFont("Helvetica", 14, QFont::Bold));
  m_Marker->setLabel(text);
  m_Plot->replot();
}

double QmitkHistogramWidget::Round ( double val ) [protected]

Definition at line 179 of file QmitkHistogramWidget.cpp.

Referenced by OnSelect(), and SetHistogram().

{
  double ival = (double)(int)val;
  if( (val - ival) > 0.5)
    return ival+1;
  else
    return ival;
}

void QmitkHistogramWidget::SetHistogram ( mitk::Image * mitkImage )

Definition at line 130 of file QmitkHistogramWidget.cpp.

References mitk::Image::GetScalarHistogram(), and SetHistogram().

{
  this->SetHistogram(mitkImage->GetScalarHistogram());
}

void QmitkHistogramWidget::SetHistogram ( HistogramType::ConstPointer histogram )

gets the data values from either a itk histogram or a mitk image
copies them into data arrays suitable for qwt
creates a plot dialog, fill it with the data and shows it

Definition at line 92 of file QmitkHistogramWidget.cpp.

References QwtPlotItem::attach(), QwtPlot::clear(), InitializeMarker(), InitializeZoomer(), m_Histogram, m_Plot, QwtPlot::replot(), Round(), QmitkHistogram::setColor(), and QmitkHistogram::setData().

Referenced by SetHistogram().

{
  HistogramType::SizeType size = itkHistogram->GetSize();
  HistogramType::IndexType index;
  HistogramType::MeasurementVectorType currentMeasurementVector;

  QwtArray<QwtDoubleInterval> xValues(size[0]);
  QwtArray<double> yValues(size[0]);

  for (unsigned int i = 0; i < size[0]; ++i)
  {
#if !defined(ITK_USE_REVIEW_STATISTICS)
    index[0] = static_cast<HistogramType::IndexType::IndexValueType> (i);
#else
    index[0] = static_cast<HistogramType::IndexValueType> (i);
#endif
    currentMeasurementVector = itkHistogram->GetMeasurementVector(index);
    if (currentMeasurementVector[0] != 0.0)
    {
      xValues[i] = QwtDoubleInterval(Round(currentMeasurementVector[0]-1), Round(currentMeasurementVector[0]));
      yValues[i] = static_cast<double> (itkHistogram->GetFrequency(index));
    }
  }

  // rebuild the plot
  m_Plot->clear();

  m_Histogram = new QmitkHistogram();
  m_Histogram->setColor(Qt::darkCyan);
  m_Histogram->setData(QwtIntervalData(xValues, yValues));
  m_Histogram->attach(m_Plot);

  this->InitializeMarker();
  this->InitializeZoomer();

  m_Plot->replot();
}

void QmitkHistogramWidget::SetReport ( std::string report )

Definition at line 135 of file QmitkHistogramWidget.cpp.

References m_Textedit.

{
  m_Textedit->setText(report.c_str());
}

Member Data Documentation

QmitkHistogram* QmitkHistogramWidget::m_Histogram [protected]

Definition at line 82 of file QmitkHistogramWidget.h.

Referenced by SetHistogram().

QwtPlotMarker* QmitkHistogramWidget::m_Marker [protected]

Definition at line 79 of file QmitkHistogramWidget.h.

Referenced by GetMarkerPosition(), InitializeMarker(), and OnSelect().

QwtPlotPicker* QmitkHistogramWidget::m_Picker [protected]

Definition at line 80 of file QmitkHistogramWidget.h.

Referenced by QmitkHistogramWidget().

QwtPlot* QmitkHistogramWidget::m_Plot [protected]

Definition at line 77 of file QmitkHistogramWidget.h.

Referenced by InitializeMarker(), InitializeZoomer(), OnSelect(), QmitkHistogramWidget(), and SetHistogram().

QTextEdit* QmitkHistogramWidget::m_Textedit [protected]

Definition at line 78 of file QmitkHistogramWidget.h.

Referenced by QmitkHistogramWidget(), and SetReport().

QwtPlotZoomer* QmitkHistogramWidget::m_Zoomer [protected]

Definition at line 81 of file QmitkHistogramWidget.h.

Referenced by InitializeZoomer().

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

QmitkHistogramWidget Class Reference

Public Types

Public Member Functions

Protected Slots

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation