QwtPlotMarker - Man Page

enum ItemAttribute { Legend =  1, AutoScale =  2 }
enum LineStyle { NoLine, HLine, VLine, Cross }
enum RenderHint { RenderAntialiased =  1 }
enum RttiValues { Rtti_PlotItem =  0, Rtti_PlotGrid, Rtti_PlotScale, Rtti_PlotMarker, Rtti_PlotCurve, Rtti_PlotHistogram, Rtti_PlotSpectrogram, Rtti_PlotSVG, Rtti_PlotUserItem =  1000 }

void attach (QwtPlot *plot)
virtual QwtDoubleRect boundingRect () const
void detach ()
virtual void draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &) const
void hide ()
QwtDoubleRect invTransform (const QwtScaleMap &, const QwtScaleMap &, const QRect &) const
bool isVisible () const
virtual void itemChanged ()
QwtText label () const
Qt::Alignment labelAlignment () const
Qt::Orientation labelOrientation () const
virtual QWidget * legendItem () const
const QPen & linePen () const
LineStyle lineStyle () const
QRect paintRect (const QwtScaleMap &, const QwtScaleMap &) const
QwtPlot * plot () const
QwtPlotMarker ()
virtual int rtti () const
QwtDoubleRect scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
void setAxis (int xAxis, int yAxis)
void setItemAttribute (ItemAttribute, bool on=true)
void setLabel (const QwtText &)
void setLabelAlignment (Qt::Alignment)
void setLabelOrientation (Qt::Orientation)
void setLinePen (const QPen &p)
void setLineStyle (LineStyle st)
void setRenderHint (RenderHint, bool on=true)
void setSpacing (int)
void setSymbol (const QwtSymbol &s)
void setTitle (const QString &title)
void setTitle (const QwtText &title)
void setValue (double, double)
void setValue (const QwtDoublePoint &)
virtual void setVisible (bool)
void setXAxis (int axis)
void setXValue (double)
void setYAxis (int axis)
void setYValue (double)
void setZ (double z)
void show ()
int spacing () const
const QwtSymbol & symbol () const
bool testItemAttribute (ItemAttribute) const
bool testRenderHint (RenderHint) const
const QwtText & title () const
QRect transform (const QwtScaleMap &, const QwtScaleMap &, const QwtDoubleRect &) const
virtual void updateLegend (QwtLegend *) const
virtual void updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &)
QwtDoublePoint value () const
int xAxis () const
double xValue () const
int yAxis () const
double yValue () const
double z () const
virtual ~QwtPlotMarker ()

void drawAt (QPainter *, const QRect &, const QPoint &) const

• Legend
  The item is represented on the legend.
• AutoScale
  The boundingRect() of the item is included in the autoscaling calculation.

See also:

See also:

Render hints.

Runtime type information. RttiValues is used to cast plot items, without having to enable runtime type information of the compiler.

Sets alignment to Qt::AlignCenter, and style to NoLine.

Destructor.

Attach the item to a plot. This method will attach a QwtPlotItem to the QwtPlot argument. It will first detach the QwtPlotItem from any plot from a previous call to attach (if necessary). If a NULL argument is passed, it will detach from any QwtPlot it was attached to.

Parameters:

plot Plot widget

See also:

QwtPlotItem::detach()

Reimplemented from QwtPlotItem.

This method detaches a QwtPlotItem from any QwtPlot it has been associated with. detach() is equivalent to calling attach( NULL )

See also:

Parameters:

painter Painter
xMap x Scale Map
yMap y Scale Map
canvasRect Contents rect of the canvas in painter coordinates

Implements QwtPlotItem.

Parameters:

painter Painter
canvasRect Contents rect of the canvas in painter coordinates
pos Position of the marker in painter coordinates

Hide the item.

Parameters:

xMap X map
yMap Y map
rect Rectangle in paint coordinates

Returns:

Rectangle in scale coordinates

See also:

transform()

See also:

See also:

See also:

See also:

See also:

Allocate the widget that represents the item on the legend. The default implementation is made for QwtPlotCurve and returns a QwtLegendItem(), but an item could be represented by any type of widget, by overloading legendItem() and updateLegend().

Returns:

QwtLegendItem()

See also:

updateLegend() QwtLegend()

Implements QwtLegendItemManager.

See also:

See also:

Calculate the bounding paint rect of 2 maps. Parameters:

Returns:

Bounding rect of the scale maps

Return attached plot.

Reimplemented from QwtPlotItem.

Calculate the bounding scale rect of 2 maps. Parameters:

Returns:

Bounding rect of the scale maps

The item will painted according to the coordinates its Axes.

Parameters:

xAxis X Axis
yAxis Y Axis

See also:

setXAxis(), setYAxis(), xAxis(), yAxis()

Parameters:

attribute Attribute type
on true/false

See also:

testItemAttribute(), ItemAttribute

Set the label. Parameters:

See also:

Set the alignment of the label. In case of QwtPlotMarker::HLine the alignment is relative to the y position of the marker, but the horizontal flags correspond to the canvas rectangle. In case of QwtPlotMarker::VLine the alignment is relative to the x position of the marker, but the vertical flags correspond to the canvas rectangle.

In all other styles the alignment is relative to the marker's position.

Parameters:

align Alignment. A combination of AlignTop, AlignBottom, AlignLeft, AlignRight, AlignCenter, AlgnHCenter, AlignVCenter.

See also:

labelAlignment(), labelOrientation()

Set the orientation of the label. When orientation is Qt::Vertical the label is rotated by 90.0 degrees ( from bottom to top ).

Parameters:

orientation Orientation of the label

See also:

labelOrientation(), setLabelAlignment()

The width of non cosmetic pens is scaled according to the resolution of the paint device.

Parameters:

pen New pen

See also:

linePen(), QwtPainter::scaledPen()

Set the line style. Parameters:

See also:

Parameters:

hint Render hint
on true/false

See also:

testRenderHint(), RenderHint

Set the spacing. When the label is not centered on the marker position, the spacing is the distance between the position and the label.

Parameters:

spacing Spacing

See also:

spacing(), setLabelAlignment()

Assign a symbol. Parameters:

See also:

Parameters:

title Title

See also:

title()

Parameters:

title Title

See also:

title()

Set Value.

Set Value.

Parameters:

on Show if true, otherwise hide

See also:

isVisible(), show(), hide()

The item will painted according to the coordinates its Axes.

Parameters:

axis X Axis

See also:

setAxis(), setYAxis(), xAxis()

Set X Value.

The item will painted according to the coordinates its Axes.

Parameters:

axis Y Axis

See also:

setAxis(), setXAxis(), yAxis()

Set Y Value.

Set the z value. Plot items are painted in increasing z-order.

Parameters:

z Z-value

See also:

z(), QwtPlotDict::itemList()

Show the item.

See also:

See also:

Parameters:

attribute Attribute type

Returns:

true/false

See also:

setItemAttribute(), ItemAttribute

Parameters:

hint Render hint

Returns:

true/false

See also:

setRenderHint(), RenderHint

See also:

Parameters:

xMap X map
yMap Y map
rect Rectangle in scale coordinates

Returns:

Rectangle in paint coordinates

See also:

invTransform()

Update the widget that represents the item on the legend. updateLegend() is called from itemChanged() to adopt the widget representing the item on the legend to its new configuration.

The default implementation is made for QwtPlotCurve and updates a QwtLegendItem(), but an item could be represented by any type of widget, by overloading legendItem() and updateLegend().

Parameters:

legend Legend

See also:

legendItem(), itemChanged(), QwtLegend()

Implements QwtLegendItemManager.

Reimplemented in QwtPlotCurve.

Update the item to changes of the axes scale division. Update the item, when the axes of plot have changed. The default implementation does nothing, but items that depend on the scale division (like QwtPlotGrid()) have to reimplement updateScaleDiv()

Parameters:

xScaleDiv Scale division of the x-axis
yScaleDiv Scale division of the y-axis

See also:

QwtPlot::updateAxes()

Reimplemented in QwtPlotGrid, and QwtPlotScaleItem.

Return Value.

Return xAxis.

Return x Value.

Return yAxis.

Return y Value.

Returns:

setZ(), QwtPlotDict::itemList()