ViewSegmentFilter Class Reference

Class that displays the current Segment Filter in a MainWindow toolbar. More...

#include <ViewSegmentFilter.h>

Inheritance diagram for ViewSegmentFilter:

Collaboration diagram for ViewSegmentFilter:

Public Member Functions
	ViewSegmentFilter (QWidget *parent=0)
	Single constructor.
virtual void	paintEvent (QPaintEvent *event)
	Paint with a horizontal linear gradient.
void	setColorFilterSettings (const ColorFilterSettings &colorFilterSettings, const QPixmap &pixmap)
	Apply the color filter of the currently selected curve. The pixmap is included so the background color can be computed.
void	setEnabled (bool enabled)
	Show the style with semi-transparency or full-transparency to indicate if associated Curve is active or not.
void	unsetColorFilterSettings ()
	Apply no color filter.

Detailed Description

Class that displays the current Segment Filter in a MainWindow toolbar.

A gradient is displayed. No border is drawn so the appearance is consistent with ViewPointStyle which would not work with a border.

Definition at line 18 of file ViewSegmentFilter.h.

Constructor & Destructor Documentation

ViewSegmentFilter()

ViewSegmentFilter::ViewSegmentFilter

(

QWidget *

parent = 0

)

Single constructor.

Definition at line 19 of file ViewSegmentFilter.cpp.

                                                    :
  QLabel (parent),
  m_filterIsDefined (false),
  m_rgbBackground (QColor (Qt::white)),
  m_enabled (true)
{
  // Note the size is set externally by the layout engine
}

Member Function Documentation

paintEvent()

void ViewSegmentFilter::paintEvent ( QPaintEvent * event )

virtual

Paint with a horizontal linear gradient.

Definition at line 160 of file ViewSegmentFilter.cpp.

{
  QPainter painter(this);
 
  if (m_filterIsDefined) {
 
    // Start and end points are midway up on both sides
    QLinearGradient gradient (0, height()/2, width(), height()/2);
 
    // One color at either end
    gradient.setColorAt (0.0, colorLow ());
    gradient.setColorAt (1.0, colorHigh ());
    painter.setBrush (gradient);
 
    // No border, which is consistent with ViewPointStyle and cleaner
    painter.setPen (Qt::NoPen);
 
    painter.drawRect (0, 0, width(), height());
 
  } else {
 
    painter.fillRect (0, 0, width (), height (), QBrush (COLOR_FOR_BRUSH_DISABLED));
 
  }
}

setColorFilterSettings()

void ViewSegmentFilter::setColorFilterSettings	(	const ColorFilterSettings &	colorFilterSettings,
		const QPixmap &	pixmap )

Apply the color filter of the currently selected curve. The pixmap is included so the background color can be computed.

Definition at line 186 of file ViewSegmentFilter.cpp.

{
  LOG4CPP_INFO_S ((*mainCat)) << "ViewSegmentFilter::setColorFilterSettings";
 
  m_colorFilterSettings = colorFilterSettings;
  m_filterIsDefined = true;
 
  // Compute background color
  ColorFilter filter;
  QImage img = pixmap.toImage();
  m_rgbBackground = filter.marginColor(&img);
 
  // Force a redraw
  update();
}

setEnabled()

void ViewSegmentFilter::setEnabled

(

bool

enabled

)

Show the style with semi-transparency or full-transparency to indicate if associated Curve is active or not.

Definition at line 203 of file ViewSegmentFilter.cpp.

{
  LOG4CPP_INFO_S ((*mainCat)) << "ViewSegmentFilter::setEnabled"
                              << " enabled=" << (enabled ? "true" : "false");
 
  m_enabled = enabled;
 
  // Force a redraw
  update();
}

unsetColorFilterSettings()

void ViewSegmentFilter::unsetColorFilterSettings

(

)

Apply no color filter.

Definition at line 214 of file ViewSegmentFilter.cpp.

{
  m_filterIsDefined = false;
 
  // Force a redraw
  update();
}

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

• View/ViewSegmentFilter.h
• View/ViewSegmentFilter.cpp