Definition at line 30 of file qwt_plot_item.h.
Public Types | |
enum | RttiValues { Rtti_PlotItem = 0, Rtti_PlotGrid, Rtti_PlotMarker, Rtti_PlotCurve, Rtti_PlotHistogram, Rtti_PlotSpectrogram, Rtti_PlotSVG, Rtti_PlotUserItem = 1000 } |
enum | ItemAttribute { Legend = 1, AutoScale = 2 } |
enum | RenderHint { RenderAntialiased = 1 } |
Public Member Functions | |
QwtPlotItem (const QwtText &title=QwtText()) | |
virtual | ~QwtPlotItem () |
void | attach (QwtPlot *plot) |
void | detach () |
QwtPlot * | plot () const |
void | setTitle (const QString &title) |
void | setTitle (const QwtText &title) |
const QwtText & | title () const |
virtual int | rtti () const |
void | setItemAttribute (ItemAttribute, bool on=true) |
bool | testItemAttribute (ItemAttribute) const |
void | setRenderHint (RenderHint, bool on=true) |
bool | testRenderHint (RenderHint) const |
double | z () const |
void | setZ (double z) |
void | show () |
void | hide () |
virtual void | setVisible (bool) |
bool | isVisible () const |
void | setAxis (int xAxis, int yAxis) |
void | setXAxis (int axis) |
int | xAxis () const |
void | setYAxis (int axis) |
int | yAxis () const |
virtual void | itemChanged () |
virtual void | draw (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &canvasRect) const=0 |
virtual QwtDoubleRect | boundingRect () const |
virtual void | updateLegend (QwtLegend *) const |
virtual void | updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &) |
virtual QWidget * | legendItem () const |
QwtDoubleRect | scaleRect (const QwtScaleMap &, const QwtScaleMap &) const |
QRect | paintRect (const QwtScaleMap &, const QwtScaleMap &) const |
QRect | transform (const QwtScaleMap &, const QwtScaleMap &, const QwtDoubleRect &) const |
QwtDoubleRect | invTransform (const QwtScaleMap &, const QwtScaleMap &, const QRect &) const |
Rtti_PlotItem | |
Rtti_PlotGrid | |
Rtti_PlotMarker | |
Rtti_PlotCurve | |
Rtti_PlotHistogram | |
Rtti_PlotSpectrogram | |
Rtti_PlotSVG | |
Rtti_PlotUserItem |
Definition at line 33 of file qwt_plot_item.h.
QwtPlotItem::~QwtPlotItem | ( | ) | [virtual] |
void QwtPlotItem::attach | ( | QwtPlot * | plot | ) |
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.
Definition at line 71 of file qwt_plot_item.cpp.
References itemChanged(), legendItem(), and plot().
Referenced by ~QwtPlotItem().
void QwtPlotItem::detach | ( | ) | [inline] |
This method detaches a QwtPlotItem from any QwtPlot is has been associated with.
detach() is equivalent to calling attach( NULL )
Definition at line 72 of file qwt_plot_item.h.
QwtPlot * QwtPlotItem::plot | ( | ) | const |
Return attached plot.
Definition at line 122 of file qwt_plot_item.cpp.
Referenced by attach(), QwtPlotCurve::closestPoint(), and QwtPlotCurve::draw().
void QwtPlotItem::setTitle | ( | const QString & | title | ) |
Set a new title
title | Title |
Definition at line 166 of file qwt_plot_item.cpp.
void QwtPlotItem::setTitle | ( | const QwtText & | title | ) |
Set a new title
title | Title |
Definition at line 177 of file qwt_plot_item.cpp.
References itemChanged(), and title().
const QwtText & QwtPlotItem::title | ( | ) | const |
Definition at line 190 of file qwt_plot_item.cpp.
Referenced by QwtPlotItem(), setTitle(), and QwtPlotCurve::updateLegend().
int QwtPlotItem::rtti | ( | ) | const [virtual] |
Return rtti for the specific class represented. QwtPlotItem is simply a virtual interface class, and base classes will implement this method with specific rtti values so a user can differentiate them.
The rtti value is useful for environments, where the runtime type information is disabled and it is not possible to do a dynamic_cast<...>.
Reimplemented in QwtPlotCurve, QwtPlotGrid, QwtPlotMarker, QwtPlotSpectrogram, and QwtPlotSvgItem.
Definition at line 116 of file qwt_plot_item.cpp.
References Rtti_PlotItem.
Referenced by QwtPlotPrintFilter::apply(), and QwtPlotPrintFilter::reset().
void QwtPlotItem::setItemAttribute | ( | ItemAttribute | attribute, | |
bool | on = true | |||
) |
Toggle an item attribute
attribute | Attribute type | |
on | true/false |
Definition at line 203 of file qwt_plot_item.cpp.
References itemChanged().
Referenced by QwtPlotCurve::init(), and QwtPlotSpectrogram::QwtPlotSpectrogram().
bool QwtPlotItem::testItemAttribute | ( | ItemAttribute | attribute | ) | const |
Test an item attribute
ItemAttribute | Attribute type |
Definition at line 223 of file qwt_plot_item.cpp.
Referenced by updateLegend().
void QwtPlotItem::setRenderHint | ( | RenderHint | hint, | |
bool | on = true | |||
) |
Toggle an render hint
hint | Render hint | |
on | true/false |
Definition at line 238 of file qwt_plot_item.cpp.
References itemChanged().
bool QwtPlotItem::testRenderHint | ( | RenderHint | hint | ) | const |
Test a render hint
hint | Render hint |
Definition at line 258 of file qwt_plot_item.cpp.
double QwtPlotItem::z | ( | ) | const |
Plot items are painted in increasing z-order.
Definition at line 132 of file qwt_plot_item.cpp.
void QwtPlotItem::setZ | ( | double | z | ) |
Set the z value.
Plot items are painted in increasing z-order.
z | Z-value |
Definition at line 145 of file qwt_plot_item.cpp.
References itemChanged().
Referenced by QwtPlotCurve::init(), QwtPlotGrid::QwtPlotGrid(), QwtPlotMarker::QwtPlotMarker(), and QwtPlotSpectrogram::QwtPlotSpectrogram().
void QwtPlotItem::setVisible | ( | bool | on | ) | [virtual] |
Show/Hide the item
on | Show if true, otherwise hide |
Definition at line 281 of file qwt_plot_item.cpp.
References itemChanged().
bool QwtPlotItem::isVisible | ( | ) | const |
Definition at line 294 of file qwt_plot_item.cpp.
void QwtPlotItem::setAxis | ( | int | xAxis, | |
int | yAxis | |||
) |
Set X and Y axis
The item will painted according to the coordinates its Axes.
xAxis | X Axis | |
yAxis | Y Axis |
Definition at line 326 of file qwt_plot_item.cpp.
References itemChanged(), QwtPlot::xBottom, QwtPlot::xTop, QwtPlot::yLeft, and QwtPlot::yRight.
void QwtPlotItem::setXAxis | ( | int | axis | ) |
Set the X axis
The item will painted according to the coordinates its Axes.
axis | X Axis |
Definition at line 345 of file qwt_plot_item.cpp.
References itemChanged(), QwtPlot::xBottom, and QwtPlot::xTop.
int QwtPlotItem::xAxis | ( | ) | const |
Return xAxis.
Definition at line 372 of file qwt_plot_item.cpp.
Referenced by QwtPlotCurve::closestPoint(), and QwtPlotCurve::draw().
void QwtPlotItem::setYAxis | ( | int | axis | ) |
Set the Y axis
The item will painted according to the coordinates its Axes.
axis | Y Axis |
Definition at line 362 of file qwt_plot_item.cpp.
References itemChanged(), QwtPlot::yLeft, and QwtPlot::yRight.
int QwtPlotItem::yAxis | ( | ) | const |
Return yAxis.
Definition at line 378 of file qwt_plot_item.cpp.
Referenced by QwtPlotCurve::closestPoint(), and QwtPlotCurve::draw().
void QwtPlotItem::itemChanged | ( | ) | [virtual] |
Update the legend and call QwtPlot::autoRefresh for the parent plot.
Definition at line 305 of file qwt_plot_item.cpp.
References updateLegend().
Referenced by attach(), QwtPlotGrid::enableX(), QwtPlotGrid::enableXMin(), QwtPlotGrid::enableY(), QwtPlotGrid::enableYMin(), QwtPlotSvgItem::loadData(), QwtPlotSvgItem::loadFile(), QwtPlotRasterItem::setAlpha(), setAxis(), QwtPlotCurve::setBaseline(), QwtPlotCurve::setBrush(), QwtPlotRasterItem::setCachePolicy(), QwtPlotSpectrogram::setColorMap(), QwtPlotSpectrogram::setConrecAttribute(), QwtPlotSpectrogram::setContourLevels(), QwtPlotCurve::setCurveAttribute(), QwtPlotCurve::setCurveFitter(), QwtPlotCurve::setCurveType(), QwtPlotSpectrogram::setData(), QwtPlotCurve::setData(), QwtPlotSpectrogram::setDefaultContourPen(), QwtPlotSpectrogram::setDisplayMode(), setItemAttribute(), QwtPlotMarker::setLabel(), QwtPlotMarker::setLabelAlignment(), QwtPlotMarker::setLinePen(), QwtPlotMarker::setLineStyle(), QwtPlotGrid::setMajPen(), QwtPlotGrid::setMinPen(), QwtPlotGrid::setPen(), QwtPlotCurve::setPen(), QwtPlotCurve::setRawData(), setRenderHint(), QwtPlotCurve::setStyle(), QwtPlotMarker::setSymbol(), QwtPlotCurve::setSymbol(), setTitle(), QwtPlotMarker::setValue(), setVisible(), setXAxis(), QwtPlotGrid::setXDiv(), setYAxis(), QwtPlotGrid::setYDiv(), and setZ().
virtual void QwtPlotItem::draw | ( | QPainter * | painter, | |
const QwtScaleMap & | xMap, | |||
const QwtScaleMap & | yMap, | |||
const QRect & | canvasRect | |||
) | const [pure virtual] |
Draw the item.
painter | Painter | |
xMap | Maps x-values into pixel coordinates. | |
yMap | Maps y-values into pixel coordinates. | |
canvasRect | Contents rect of the canvas in painter coordinates |
Implemented in QwtPlotCurve, QwtPlotGrid, QwtPlotMarker, QwtPlotRasterItem, QwtPlotSpectrogram, and QwtPlotSvgItem.
QwtDoubleRect QwtPlotItem::boundingRect | ( | ) | const [virtual] |
Reimplemented in QwtPlotCurve, QwtPlotMarker, QwtPlotSpectrogram, and QwtPlotSvgItem.
Definition at line 386 of file qwt_plot_item.cpp.
Referenced by QwtPlotRasterItem::draw(), QwtPlotCurve::maxXValue(), QwtPlotCurve::maxYValue(), QwtPlotCurve::minXValue(), and QwtPlotCurve::minYValue().
void QwtPlotItem::updateLegend | ( | QwtLegend * | legend | ) | const [virtual] |
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().
Reimplemented in QwtPlotCurve.
Definition at line 418 of file qwt_plot_item.cpp.
References QwtLegend::find(), QwtLegend::insert(), QwtLegend::itemMode(), Legend, legendItem(), and testItemAttribute().
Referenced by itemChanged(), QwtLegend::setDisplayPolicy(), and QwtPlotCurve::updateLegend().
void QwtPlotItem::updateScaleDiv | ( | const QwtScaleDiv & | , | |
const QwtScaleDiv & | ||||
) | [virtual] |
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()
xScaleDiv | Scale division of the x-axis | |
yScaleDiv | Scale division of the y-axis |
Reimplemented in QwtPlotGrid.
Definition at line 473 of file qwt_plot_item.cpp.
QWidget * QwtPlotItem::legendItem | ( | ) | const [virtual] |
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().
Definition at line 401 of file qwt_plot_item.cpp.
Referenced by attach(), updateLegend(), and QwtPlotCurve::updateLegend().
QwtDoubleRect QwtPlotItem::scaleRect | ( | const QwtScaleMap & | xMap, | |
const QwtScaleMap & | yMap | |||
) | const |
Calculate the bounding scale rect of 2 maps.
xMap | X map | |
yMap | X map |
Definition at line 486 of file qwt_plot_item.cpp.
References QwtScaleMap::s1(), and QwtScaleMap::sDist().
QRect QwtPlotItem::paintRect | ( | const QwtScaleMap & | xMap, | |
const QwtScaleMap & | yMap | |||
) | const |
Calculate the bounding paint rect of 2 maps.
xMap | X map | |
yMap | X map |
Definition at line 501 of file qwt_plot_item.cpp.
References QwtScaleMap::p1(), and QwtScaleMap::pDist().
Referenced by QwtPlotRasterItem::draw().
QRect QwtPlotItem::transform | ( | const QwtScaleMap & | xMap, | |
const QwtScaleMap & | yMap, | |||
const QwtDoubleRect & | rect | |||
) | const |
Transform a rectangle
xMap | X map | |
yMap | Y map | |
rect | Rectangle in scale coordinates |
Definition at line 520 of file qwt_plot_item.cpp.
References QwtScaleMap::transform().
Referenced by QwtPlotSvgItem::draw(), QwtPlotSpectrogram::draw(), QwtPlotRasterItem::draw(), and QwtPlotSpectrogram::renderImage().
QwtDoubleRect QwtPlotItem::invTransform | ( | const QwtScaleMap & | xMap, | |
const QwtScaleMap & | yMap, | |||
const QRect & | rect | |||
) | const |
Transform a rectangle from paint to scale coordinates
xMap | X map | |
yMap | Y map | |
rect | Rectangle in paint coordinates |
Definition at line 545 of file qwt_plot_item.cpp.
References QwtScaleMap::invTransform().
Referenced by QwtPlotSvgItem::draw(), QwtPlotSpectrogram::draw(), and QwtPlotRasterItem::draw().