Qwt Polar User's Guide  1.0.1
Public Types | Public Member Functions | Protected Member Functions
QwtPolarLayout Class Reference

#include <qwt_polar_layout.h>

List of all members.

Public Types

enum  Option {
  IgnoreScrollbars = 0x01,
  IgnoreFrames = 0x02,
  IgnoreTitle = 0x04,
  IgnoreLegend = 0x08
}
typedef QFlags< OptionOptions

Public Member Functions

 QwtPolarLayout ()
virtual ~QwtPolarLayout ()
void setLegendPosition (QwtPolarPlot::LegendPosition pos, double ratio)
void setLegendPosition (QwtPolarPlot::LegendPosition pos)
QwtPolarPlot::LegendPosition legendPosition () const
void setLegendRatio (double ratio)
double legendRatio () const
virtual void activate (const QwtPolarPlot *, const QRectF &rect, Options options=0)
virtual void invalidate ()
const QRectF & titleRect () const
const QRectF & legendRect () const
const QRectF & canvasRect () const

Protected Member Functions

QRectF layoutLegend (Options options, QRectF &) const

Detailed Description

Layout class for QwtPolarPlot.

Organizes the geometry for the different QwtPolarPlot components. It is used by the QwtPolar widget to organize its internal widgets or by QwtPolarRnderer to render its content to a QPaintDevice like a QPrinter, QPixmap/QImage or QSvgRenderer.


Member Typedef Documentation

Options to configure the plot layout engine.


Member Enumeration Documentation

Options to configure the plot layout engine.

Enumerator:
IgnoreScrollbars 

Ignore the dimension of the scrollbars.

IgnoreFrames 

Ignore all frames.

IgnoreTitle 

Ignore the title.

IgnoreLegend 

Ignore the legend.


Constructor & Destructor Documentation

QwtPolarLayout::QwtPolarLayout ( ) [explicit]

Constructor.

QwtPolarLayout::~QwtPolarLayout ( ) [virtual]

Destructor.


Member Function Documentation

void QwtPolarLayout::activate ( const QwtPolarPlot plot,
const QRectF &  boundingRect,
Options  options = 0 
) [virtual]

Recalculate the geometry of all components.

Parameters:
plotPlot to be layout
boundingRectRect where to place the components
optionsOptions
See also:
invalidate(), titleRect(), legendRect(), canvasRect()
const QRectF & QwtPolarLayout::canvasRect ( ) const
Returns:
Geometry for the canvas
See also:
activate(), invalidate()
void QwtPolarLayout::invalidate ( ) [virtual]

Invalidate the geometry of all components.

See also:
activate()
QRectF QwtPolarLayout::layoutLegend ( Options  options,
QRectF &  rect 
) const [protected]

Find the geometry for the legend

Parameters:
optionsOptions how to layout the legend
rectRectangle where to place the legend
Returns:
Geometry for the legend
QwtPolarPlot::LegendPosition QwtPolarLayout::legendPosition ( ) const
Returns:
Position of the legend
See also:
setLegendPosition(), QwtPolarPlot::setLegendPosition(), QwtPolarPlot::legendPosition()
double QwtPolarLayout::legendRatio ( ) const
Returns:
The relative size of the legend in the plot.
See also:
setLegendPosition()
const QRectF & QwtPolarLayout::legendRect ( ) const
Returns:
Geometry for the legend
See also:
activate(), invalidate()
void QwtPolarLayout::setLegendPosition ( QwtPolarPlot::LegendPosition  pos,
double  ratio 
)

Specify the position of the legend.

Parameters:
posThe legend's position.
ratioRatio between legend and the bounding rect of title, canvas and axes. The legend will be shrinked if it would need more space than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case of <= 0.0 it will be reset to the default ratio. The default vertical/horizontal ratio is 0.33/0.5.
See also:
QwtPolarPlot::setLegendPosition()
void QwtPolarLayout::setLegendPosition ( QwtPolarPlot::LegendPosition  pos)

Specify the position of the legend.

Parameters:
posThe legend's position. Valid values are QwtPolarPlot::LeftLegend, QwtPolarPlot::RightLegend, QwtPolarPlot::TopLegend, QwtPolarPlot::BottomLegend.
See also:
QwtPolarPlot::setLegendPosition()
void QwtPolarLayout::setLegendRatio ( double  ratio)

Specify the relative size of the legend in the plot

Parameters:
ratioRatio between legend and the bounding rect of title, canvas and axes. The legend will be shrinked if it would need more space than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case of <= 0.0 it will be reset to the default ratio. The default vertical/horizontal ratio is 0.33/0.5.
const QRectF & QwtPolarLayout::titleRect ( ) const
Returns:
Geometry for the title
See also:
activate(), invalidate()