#include <QmitkSliderNavigatorWidget.h>

Inheritance diagram for QmitkSliderNavigatorWidget:

Collaboration diagram for QmitkSliderNavigatorWidget:

Public Slots
void	Refetch ()
	Updates the slider with the recent changes applied to the navigator.
void	SetStepper (mitk::Stepper *stepper)
void	ShowLabels (bool show)
void	ShowLabelUnit (bool show)
	En-/disables displaying of the unit label (range will be displayed without unit if enabled).
void	SetPos (int val)
void	SetInverseDirection (bool inverseDirection)
Public Member Functions
	QmitkSliderNavigatorWidget (QWidget *parent=0, Qt::WindowFlags f=0)
QString	GetLabelUnit ()
QString	ClippedValueToString (float value)
	Converts the passed value to a QString representation.
QString	GetMinValueLabel ()
	Returns range-minimum (displayed as label left of slider if enabled)
QString	GetMaxValueLabel ()
int	GetPos ()
Protected Slots
void	slider_valueChanged (int)
void	SetLabelValues (float min, float max)
	Set range minimum and maximum (displayed as labels left and right of slider if enabled)
void	SetLabelValuesValid (bool minValid, bool maxValid)
void	SetLabelUnit (const char *unit)
	Set range unit (e.g. mm or ms) which will be displayed below range labels if enabled.
void	SetLabels ()
	Configure slider with labels according to range and unit settings.
void	spinBox_valueChanged (int)
Protected Attributes
bool	m_HasLabelUnit
bool	m_MaxValueValid
bool	m_MinValueValid
QString	m_LabelUnit
mitk::Stepper::Pointer	m_Stepper
bool	m_InRefetch
bool	m_HasLabels
float	m_MinValue
float	m_MaxValue
bool	m_InverseDirection

Detailed Description

Definition at line 29 of file QmitkSliderNavigatorWidget.h.

Constructor & Destructor Documentation

QmitkSliderNavigatorWidget::QmitkSliderNavigatorWidget	(	QWidget *	parent = `0`,
		Qt::WindowFlags	f = `0`
	)

Definition at line 20 of file QmitkSliderNavigatorWidget.cpp.

References m_HasLabels, m_HasLabelUnit, m_InRefetch, m_InverseDirection, SetLabelValuesValid(), Ui_QmitkSliderNavigator::setupUi(), and ShowLabels().

 : QWidget(parent, f)
{
  this->setupUi(this);
  
  // this avoids trying to use m_Stepper until it is set to something != NULL 
  // (additionally to the avoiding recursions during refetching)
  m_InRefetch = true;

  // Hide slider labeling -- until it is explicitly activated
  this->ShowLabels( false );

  // Set label values as invalid (N/A)
  this->SetLabelValuesValid( false, false );

  m_HasLabels = false;
  m_HasLabelUnit = true;
  m_InverseDirection = false;
}

Member Function Documentation

QString QmitkSliderNavigatorWidget::ClippedValueToString ( float value )

Converts the passed value to a QString representation.

If the value exceeds a certain maximum, "INF" (for "infinity") is displayed instead.

Definition at line 165 of file QmitkSliderNavigatorWidget.cpp.

Referenced by GetMaxValueLabel(), and GetMinValueLabel().

{
  if ( value < -10000000.0 )
  {
    return "-INF";
  }
  else if ( value > 10000000.0 )
  {
    return "+INF";
  }
  else
  {
    return QString::number( value, 'f', 2 );
  }
}

QString QmitkSliderNavigatorWidget::GetLabelUnit ( )

Definition at line 160 of file QmitkSliderNavigatorWidget.cpp.

References m_LabelUnit.

Referenced by SetLabels().

{
  return m_LabelUnit;
}

QString QmitkSliderNavigatorWidget::GetMaxValueLabel ( )

Definition at line 193 of file QmitkSliderNavigatorWidget.cpp.

References ClippedValueToString(), m_MaxValue, and m_MaxValueValid.

Referenced by SetLabels().

{
  if ( m_MaxValueValid )
  {
    return this->ClippedValueToString( m_MaxValue );
  }
  else
  {
    return "N/A";
  }
}

QString QmitkSliderNavigatorWidget::GetMinValueLabel ( )

Returns range-minimum (displayed as label left of slider if enabled)

Definition at line 181 of file QmitkSliderNavigatorWidget.cpp.

References ClippedValueToString(), m_MinValue, and m_MinValueValid.

Referenced by SetLabels().

{
  if ( m_MinValueValid )
  {
    return this->ClippedValueToString( m_MinValue );
  }
  else
  {
    return "N/A";
  }
}

int QmitkSliderNavigatorWidget::GetPos ( )

Definition at line 252 of file QmitkSliderNavigatorWidget.cpp.

References m_Stepper.

Referenced by QmitkSliceWidget::wheelEvent().

{
  return m_Stepper->GetPos();
}

void QmitkSliderNavigatorWidget::Refetch ( ) [slot]

Updates the slider with the recent changes applied to the navigator.

Intended to be called via event mechanism, e.g. if the connected mitk::Stepper is modified.

Definition at line 40 of file QmitkSliderNavigatorWidget.cpp.

References m_HasLabels, m_InRefetch, m_InverseDirection, Ui_QmitkSliderNavigator::m_Slider, Ui_QmitkSliderNavigator::m_SliderLabelLeft, Ui_QmitkSliderNavigator::m_SliderLabelRight, Ui_QmitkSliderNavigator::m_SpinBox, m_Stepper, SetLabels(), SetLabelUnit(), SetLabelValues(), and SetLabelValuesValid().

Referenced by slider_valueChanged(), and spinBox_valueChanged().

{
  if ( !m_InRefetch )
  {
    m_InRefetch = true;
    
    m_Slider->setMinimum( 0 );
    m_Slider->setMaximum( m_Stepper->GetSteps() - 1 );
    if (m_InverseDirection)
    {
      m_Slider->setValue( m_Stepper->GetSteps()-1-m_Stepper->GetPos() );
    }
    else
    {
      m_Slider->setValue( m_Stepper->GetPos() );
    }
    
    m_SpinBox->setMinimum( 0 );
    m_SpinBox->setMaximum( m_Stepper->GetSteps() - 1 );
    if (m_InverseDirection)
    {
      m_SpinBox->setValue( m_Stepper->GetSteps()-1-m_Stepper->GetPos() );
    }
    else
    {
      m_SpinBox->setValue( m_Stepper->GetPos() );
    }

    if ( m_Stepper->HasRange() && m_HasLabels )
    {
      // Show slider with labels according to below settings
      m_SliderLabelLeft->setHidden( false );
      m_SliderLabelRight->setHidden( false );
    
      if ( m_Stepper->HasValidRange() )
      {
        this->SetLabelValuesValid( true, true );
        this->SetLabelValues( 
          m_Stepper->GetRangeMin(),
          m_Stepper->GetRangeMax() );
      }
      else
      {
        this->SetLabelValuesValid( false, false );
      }

      if ( m_Stepper->HasUnitName() )
      {
        this->SetLabelUnit( m_Stepper->GetUnitName() );
      }
    }
    else
    {
      // Show slider without any labels
      m_SliderLabelLeft->setHidden( true );
      m_SliderLabelRight->setHidden( true );
    }
  
    // Update GUI according to above settings
    this->SetLabels();
    
    m_InRefetch=false;
  }
}

void QmitkSliderNavigatorWidget::SetInverseDirection ( bool inverseDirection ) [slot]

Definition at line 265 of file QmitkSliderNavigatorWidget.cpp.

References m_InverseDirection.

Referenced by QmitkImageNavigatorView::CreateQtPartControl().

{
  m_InverseDirection = inverseDirection;
}

void QmitkSliderNavigatorWidget::SetLabels ( ) [protected, slot]

Configure slider with labels according to range and unit settings.

Definition at line 205 of file QmitkSliderNavigatorWidget.cpp.

References GetLabelUnit(), GetMaxValueLabel(), GetMinValueLabel(), m_HasLabelUnit, m_MaxValueValid, m_MinValueValid, Ui_QmitkSliderNavigator::m_SliderLabelLeft, Ui_QmitkSliderNavigator::m_SliderLabelRight, and m_Stepper.

Referenced by Refetch().

{
  QString minText = "<p align='center'><font size='2'>" 
    + this->GetMinValueLabel();

  QString maxText = "<p align='center'><font size='2'>" 
    + this->GetMaxValueLabel();
  
  if ( m_HasLabelUnit )
  {
    minText += "&nbsp;" + this->GetLabelUnit();
    maxText += "&nbsp;" + this->GetLabelUnit();
  }

  if ( m_MinValueValid )
  {
    minText += "<br>(pos&nbsp;0)";
  }

  if ( m_MaxValueValid )
  {
    maxText += "<br>(pos&nbsp;" + QString::number( m_Stepper->GetSteps() - 1 ) + ")";
  }

  minText += "</font></p>";
  maxText += "</font></p>";

  m_SliderLabelLeft->setText( minText );
  m_SliderLabelRight->setText( maxText );
}

void QmitkSliderNavigatorWidget::SetLabelUnit ( const char * unit ) [protected, slot]

Set range unit (e.g. mm or ms) which will be displayed below range labels if enabled.

Definition at line 155 of file QmitkSliderNavigatorWidget.cpp.

References m_LabelUnit.

Referenced by Refetch().

{
  m_LabelUnit = unit;
}

void QmitkSliderNavigatorWidget::SetLabelValues	(	float	min,
		float	max
	)		`[protected, slot]`

Set range minimum and maximum (displayed as labels left and right of slider if enabled)

Definition at line 143 of file QmitkSliderNavigatorWidget.cpp.

References m_MaxValue, m_MinValue, QuadProgPP::max(), and min.

Referenced by Refetch().

{
  m_MinValue = min;
  m_MaxValue = max;
}

void QmitkSliderNavigatorWidget::SetLabelValuesValid	(	bool	minValid,
		bool	maxValid
	)		`[protected, slot]`

Definition at line 149 of file QmitkSliderNavigatorWidget.cpp.

References m_MaxValueValid, and m_MinValueValid.

Referenced by QmitkSliderNavigatorWidget(), and Refetch().

{
  m_MinValueValid = minValid;
  m_MaxValueValid = maxValid;
}

void QmitkSliderNavigatorWidget::SetPos ( int val ) [slot]

Definition at line 257 of file QmitkSliderNavigatorWidget.cpp.

References m_InRefetch, and m_Stepper.

Referenced by QmitkSliceWidget::wheelEvent().

{
  if (!m_InRefetch)    
  {
    m_Stepper->SetPos( val );
  }
}

void QmitkSliderNavigatorWidget::SetStepper ( mitk::Stepper * stepper ) [slot]

Definition at line 106 of file QmitkSliderNavigatorWidget.cpp.

References m_InRefetch, and m_Stepper.

{
  m_Stepper = stepper;
  
  // this avoids trying to use m_Stepper until it is set to something != NULL 
  // (additionally to the avoiding recursions during refetching)
  m_InRefetch = (stepper==NULL);
}

void QmitkSliderNavigatorWidget::ShowLabels ( bool show ) [slot]

Definition at line 133 of file QmitkSliderNavigatorWidget.cpp.

References m_HasLabels.

Referenced by QmitkSliderNavigatorWidget().

{
  m_HasLabels = show;
}

void QmitkSliderNavigatorWidget::ShowLabelUnit ( bool show ) [slot]

En-/disables displaying of the unit label (range will be displayed without unit if enabled).

Definition at line 138 of file QmitkSliderNavigatorWidget.cpp.

References m_HasLabelUnit.

{
  m_HasLabelUnit = show;
}

void QmitkSliderNavigatorWidget::slider_valueChanged ( int ) [protected, slot]

Definition at line 116 of file QmitkSliderNavigatorWidget.cpp.

References m_InRefetch, m_InverseDirection, Ui_QmitkSliderNavigator::m_Slider, m_Stepper, and Refetch().

{
  if (!m_InRefetch)
  {
    if (m_InverseDirection)
    {
      m_Stepper->SetPos(m_Stepper->GetSteps()-1-m_Slider->value());
    }
    else
    {
      m_Stepper->SetPos(m_Slider->value());
    }
    this->Refetch();
  }
}

void QmitkSliderNavigatorWidget::spinBox_valueChanged ( int ) [protected, slot]

Definition at line 236 of file QmitkSliderNavigatorWidget.cpp.

References m_InRefetch, m_InverseDirection, Ui_QmitkSliderNavigator::m_SpinBox, m_Stepper, and Refetch().

{
  if(!m_InRefetch)
  {
    if (m_InverseDirection)
    {
      m_Stepper->SetPos( m_Stepper->GetSteps()-1-m_SpinBox->value() );
    }
    else
    {
      m_Stepper->SetPos( m_SpinBox->value() );
    }
    this->Refetch();
  }
}