Qwt User's Guide: QwtPlotPrintFilter Class Reference

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QwtPlotPrintFilter Class Reference

A base class for plot print filters. More...

#include <qwt_plot_printfilter.h>

List of all members.

Public Types

enum  Options {
  PrintMargin = 1,
  PrintTitle = 2,
  PrintLegend = 4,
  PrintGrid = 8,
  PrintBackground = 16,
  PrintFrameWithScales = 32,
  PrintAll = ~PrintFrameWithScales
}
enum  Item {
  Title,
  Legend,
  Curve,
  CurveSymbol,
  Marker,
  MarkerSymbol,
  MajorGrid,
  MinorGrid,
  CanvasBackground,
  AxisScale,
  AxisTitle,
  WidgetBackground
}

Public Member Functions

 QwtPlotPrintFilter ()
virtual ~QwtPlotPrintFilter ()
virtual QColor color (const QColor &, Item item) const
virtual QFont font (const QFont &, Item item) const
void setOptions (int options)
int options () const
virtual void apply (QwtPlot *) const
virtual void reset (QwtPlot *) const
virtual void apply (QwtPlotItem *) const
virtual void reset (QwtPlotItem *) const

Detailed Description

A base class for plot print filters.

A print filter can be used to customize QwtPlot::print().

Deprecated:
In Qwt 5.0 the design of QwtPlot allows/recommends writing individual QwtPlotItems, that are not known to QwtPlotPrintFilter. So this concept is outdated and QwtPlotPrintFilter will be removed/replaced in Qwt 6.x.

Member Enumeration Documentation

enum QwtPlotPrintFilter::Item

Print items.

enum QwtPlotPrintFilter::Options

Print options.

Constructor & Destructor Documentation

QwtPlotPrintFilter::QwtPlotPrintFilter (  )  [explicit]

Sets filter options to PrintAll

QwtPlotPrintFilter::~QwtPlotPrintFilter (  )  [virtual]

Destructor.

Member Function Documentation

void QwtPlotPrintFilter::apply ( QwtPlot *  plot  )  const [virtual]

Change color and fonts of a plot

See also:
apply()
QColor QwtPlotPrintFilter::color ( const QColor &  c,
Item  item 
) const [virtual]

Modifies a color for printing.

Parameters:
c Color to be modified
item Type of item where the color belongs
Returns:
Modified color.

In case of !(QwtPlotPrintFilter::options() & PrintBackground) MajorGrid is modified to Qt::darkGray, MinorGrid to Qt::gray. All other colors are returned unmodified.

QFont QwtPlotPrintFilter::font ( const QFont &  f,
Item  item 
) const [virtual]

Modifies a font for printing.

Parameters:
f Font to be modified
item Type of item where the font belongs

All fonts are returned unmodified

int QwtPlotPrintFilter::options (  )  const

Get plot print options.

See also:
setOptions()
void QwtPlotPrintFilter::reset ( QwtPlot *  plot  )  const [virtual]

Reset color and fonts of a plot

See also:
apply()
void QwtPlotPrintFilter::setOptions ( int  options  ) 

Set plot print options.

Parameters:
options Or'd QwtPlotPrintFilter::Options values
See also:
options()
Generated on Wed Sep 2 18:37:26 2009 for Qwt User's Guide by  doxygen 1.6.1
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