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QwtPlotPrintFilter(3) Qwt User's Guide QwtPlotPrintFilter(3)

NAME

QwtPlotPrintFilter -

SYNOPSIS

#include <qwt_plot_printfilter.h>

Public Types


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

Public Member Functions


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

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 So this concept is outdated and QwtPlotPrintFilter will be removed/replaced in Qwt 6.x.

Constructor & Destructor Documentation

QwtPlotPrintFilter::QwtPlotPrintFilter () [explicit]

Sets filter options to PrintAll

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, Itemitem) 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, Itemitem) 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 (intoptions)

Set plot print options. Parameters:
options Or'd QwtPlotPrintFilter::Options values

See also:

options()

Author

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Tue Nov 20 2012 Version 5.2.3