Definition at line 31 of file qwt_plot_item.h.
Public Types | |
enum | RttiValues { Rtti_PlotItem = 0, Rtti_PlotGrid, Rtti_PlotScale, 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 |
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(), and legendItem().
Referenced by QwtPlotDict::detachItems(), and ~QwtPlotItem().
void QwtPlotItem::detach | ( | ) | [inline] |
This method detaches a QwtPlotItem from any QwtPlot it has been associated with.
detach() is equivalent to calling attach( NULL )
Definition at line 74 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 QwtPlotCurve::draw(), QwtPlotScaleItem::setScaleDivFromAxis(), and QwtPlotScaleItem::setScaleDraw().
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().
const QwtText & QwtPlotItem::title | ( | ) | const |
Definition at line 190 of file qwt_plot_item.cpp.
Referenced by 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, QwtPlotScaleItem, QwtPlotSpectrogram, and QwtPlotSvgItem.
Definition at line 116 of file qwt_plot_item.cpp.
Referenced by QwtPlotDict::detachItems(), and QwtPlot::drawItems().
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 QwtPlot::updateAxes(), and 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.
Referenced by QwtPlot::drawItems().
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(), QwtPlotScaleItem::QwtPlotScaleItem(), and QwtPlotSpectrogram::QwtPlotSpectrogram().
void QwtPlotItem::show | ( | ) |
void QwtPlotItem::hide | ( | ) |
void QwtPlotItem::setVisible | ( | bool | on | ) | [virtual] |
Show/Hide the item
on | Show if true, otherwise hide |
Definition at line 283 of file qwt_plot_item.cpp.
References itemChanged().
bool QwtPlotItem::isVisible | ( | ) | const |
Definition at line 296 of file qwt_plot_item.cpp.
Referenced by QwtPlot::drawItems().
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 328 of file qwt_plot_item.cpp.
References itemChanged().
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 347 of file qwt_plot_item.cpp.
References itemChanged().
int QwtPlotItem::xAxis | ( | ) | const |
Return xAxis.
Definition at line 374 of file qwt_plot_item.cpp.
Referenced by QwtPlotCurve::draw(), QwtPlot::drawItems(), QwtPlotScaleItem::setScaleDivFromAxis(), QwtPlotScaleItem::setScaleDraw(), and QwtPlot::updateAxes().
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 364 of file qwt_plot_item.cpp.
References itemChanged().
int QwtPlotItem::yAxis | ( | ) | const |
Return yAxis.
Definition at line 380 of file qwt_plot_item.cpp.
Referenced by QwtPlotCurve::draw(), QwtPlot::drawItems(), QwtPlotScaleItem::setScaleDivFromAxis(), QwtPlotScaleItem::setScaleDraw(), and QwtPlot::updateAxes().
void QwtPlotItem::itemChanged | ( | ) | [virtual] |
Update the legend and call QwtPlot::autoRefresh for the parent plot.
Definition at line 307 of file qwt_plot_item.cpp.
References updateLegend().
Referenced by attach(), QwtPlotGrid::enableX(), QwtPlotGrid::enableXMin(), QwtPlotGrid::enableY(), QwtPlotGrid::enableYMin(), QwtPlotSvgItem::loadData(), QwtPlotSvgItem::loadFile(), QwtPlotScaleItem::setAlignment(), QwtPlotRasterItem::setAlpha(), setAxis(), QwtPlotCurve::setBaseline(), QwtPlotScaleItem::setBorderDistance(), QwtPlotCurve::setBrush(), QwtPlotRasterItem::setCachePolicy(), QwtPlotSpectrogram::setColorMap(), QwtPlotSpectrogram::setConrecAttribute(), QwtPlotSpectrogram::setContourLevels(), QwtPlotCurve::setCurveAttribute(), QwtPlotCurve::setCurveType(), QwtPlotSpectrogram::setData(), QwtPlotCurve::setData(), QwtPlotSpectrogram::setDefaultContourPen(), QwtPlotSpectrogram::setDisplayMode(), QwtPlotScaleItem::setFont(), setItemAttribute(), QwtPlotMarker::setLabel(), QwtPlotMarker::setLabelAlignment(), QwtPlotMarker::setLinePen(), QwtPlotMarker::setLineStyle(), QwtPlotGrid::setMajPen(), QwtPlotGrid::setMinPen(), QwtPlotScaleItem::setPalette(), QwtPlotGrid::setPen(), QwtPlotCurve::setPen(), QwtPlotScaleItem::setPosition(), QwtPlotCurve::setRawData(), setRenderHint(), QwtPlotScaleItem::setScaleDivFromAxis(), QwtPlotScaleItem::setScaleDraw(), 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, QwtPlotScaleItem, QwtPlotSpectrogram, and QwtPlotSvgItem.
Referenced by QwtPlot::drawItems().
QwtDoubleRect QwtPlotItem::boundingRect | ( | ) | const [virtual] |
Reimplemented in QwtPlotCurve, QwtPlotMarker, QwtPlotSpectrogram, and QwtPlotSvgItem.
Definition at line 388 of file qwt_plot_item.cpp.
Referenced by QwtPlotRasterItem::draw(), QwtPlotCurve::maxXValue(), QwtPlotCurve::maxYValue(), QwtPlotCurve::minXValue(), QwtPlotCurve::minYValue(), and QwtPlot::updateAxes().
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 420 of file qwt_plot_item.cpp.
References QwtLegend::find(), QwtLegend::insert(), QwtLegend::itemMode(), legendItem(), QwtLegendItem::setItemMode(), QwtLegendItem::setText(), and testItemAttribute().
Referenced by itemChanged(), 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, and QwtPlotScaleItem.
Definition at line 475 of file qwt_plot_item.cpp.
Referenced by QwtPlot::updateAxes().
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 403 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 488 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 503 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 522 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 547 of file qwt_plot_item.cpp.
References QwtScaleMap::invTransform().
Referenced by QwtPlotSvgItem::draw(), QwtPlotSpectrogram::draw(), and QwtPlotRasterItem::draw().