QwtParasitePlotLayout Class Reference

Layout manager for parasite plots. More...

#include <qwt_parasite_plot_layout.h>

Inheritance diagram for QwtParasitePlotLayout:

Public Member Functions
	QwtParasitePlotLayout ()
	Construct a parasite plot layout.
	~QwtParasitePlotLayout () override
	Destructor.
virtual void	activate (const QwtPlot *plot, const QRectF &plotRect, Options options=Options()) override
	Activate the layout for a parasite plot.
virtual QSize	minimumSizeHint (const QwtPlot *plot) const override
	Get minimum size hint for a parasite plot.
QRectF	parasiteScaleRect (QwtAxisId aid) const
	Get the parasite axis scale rect without offset.
Public Member Functions inherited from QwtPlotLayout
	QwtPlotLayout ()
	Constructor.
void	setCanvasMargin (int margin, int axis=-1)
	Set the canvas margin for a specific axis position.
int	canvasMargin (int axisId) const
	Get the canvas margin for a specific axis position.
void	setAlignCanvasToScales (bool)
	Set the align-canvas-to-axis-scales flag for all axes.
void	setAlignCanvasToScale (int axisId, bool)
	Set the align-canvas-to-axis-scales setting for a specific axis.
bool	alignCanvasToScale (int axisId) const
	Get the align-canvas-to-axis-scales setting for a specific axis.
void	setSpacing (int)
	Set the spacing between plot components.
int	spacing () const
	Get the spacing between plot components.
void	setLegendPosition (QwtPlot::LegendPosition pos, double ratio)
	Set the legend position with a specified ratio.
void	setLegendPosition (QwtPlot::LegendPosition pos)
	Set the legend position.
QwtPlot::LegendPosition	legendPosition () const
	Get the legend position.
void	setLegendRatio (double ratio)
	Set the relative size of the legend in the plot.
double	legendRatio () const
	Get the relative size of the legend in the plot.
virtual void	invalidate ()
	Invalidate the geometry of all components.
QRectF	titleRect () const
	Get the geometry for the title.
QRectF	footerRect () const
	Get the geometry for the footer.
QRectF	legendRect () const
	Get the geometry for the legend.
QRectF	scaleRect (QwtAxisId) const
	Get the geometry for a scale axis.
QRectF	canvasRect () const
	Get the geometry for the canvas.

Additional Inherited Members
Public Types inherited from QwtPlotLayout
enum	Option {   AlignScales = 0x01 , IgnoreScrollbars = 0x02 , IgnoreFrames = 0x04 , IgnoreLegend = 0x08 ,   IgnoreTitle = 0x10 , IgnoreFooter = 0x20 }
	Options to configure the plot layout engine. More...
Protected Member Functions inherited from QwtPlotLayout
void	setTitleRect (const QRectF &)
	Set the geometry for the title.
void	setFooterRect (const QRectF &)
	Set the geometry for the footer.
void	setLegendRect (const QRectF &)
	Set the geometry for the legend.
void	setScaleRect (QwtAxisId, const QRectF &)
	Set the geometry for an axis.
void	setCanvasRect (const QRectF &)
	Set the geometry for the canvas.
QwtPlotLayoutEngine *	layoutEngine ()
void	doActivate (const QwtPlot *plot, const QRectF &plotRect, Options options=Options())
	Concrete implementation of QwtPlotLayout::activate.

Detailed Description

Layout manager for parasite plots.

QwtParasitePlotLayout manages the layout of parasite plots that share the same canvas area with their host plot. It copies layout attributes from the host plot to ensure visual consistency.

See also

QwtPlot::createParasitePlot()

Member Function Documentation

activate()

void QwtParasitePlotLayout::activate ( const QwtPlot *  plot, const QRectF &  plotRect, Options  options = Options()  )

overridevirtual

Activate the layout for a parasite plot.

Copies all layout attributes from the host plot to maintain visual consistency. If no host plot is found, uses default layout behavior.

Parameters

plot	Parasite plot to activate layout for
plotRect	Rectangle for the plot area
options	Layout options

Reimplemented from QwtPlotLayout.

minimumSizeHint()

QSize QwtParasitePlotLayout::minimumSizeHint ( const QwtPlot *  plot ) const

overridevirtual

Get minimum size hint for a parasite plot.

Returns the minimum size from the host plot's layout if available, otherwise uses default QwtPlotLayout behavior.

Parameters

plot	Parasite plot to get size hint for

Returns

Minimum size hint

Reimplemented from QwtPlotLayout.

parasiteScaleRect()

QRectF QwtParasitePlotLayout::parasiteScaleRect

(

QwtAxisId

aid

)

const

Get the parasite axis scale rect without offset.

Returns the scale rectangle for a parasite axis before it was copied from the host plot layout. This is the original unmodified position.

Parameters

aid	Axis ID to get scale rect for

Returns

Scale rectangle for the axis

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

• /home/runner/work/QWT/QWT/src/plot/qwt_parasite_plot_layout.h
• /home/runner/work/QWT/QWT/src/plot/qwt_parasite_plot_layout.cpp