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Qwt User's Guide
6.2.0
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QwtPlotIntervalCurve represents a series of samples, where each value is associated with an interval ( ).
More...
#include <qwt_plot_intervalcurve.h>
Public Member Functions | |
| QwtPlotIntervalCurve (const QString &title=QString()) | |
| QwtPlotIntervalCurve (const QwtText &title) | |
| virtual | ~QwtPlotIntervalCurve () |
| Destructor. | |
| virtual int | rtti () const override |
| void | setPaintAttribute (PaintAttribute, bool on=true) |
| bool | testPaintAttribute (PaintAttribute) const |
| void | setSamples (const QVector< QwtIntervalSample > &) |
| void | setSamples (QwtSeriesData< QwtIntervalSample > *) |
| void | setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine) |
| void | setPen (const QPen &) |
| Assign a pen. More... | |
| const QPen & | pen () const |
| void | setBrush (const QBrush &) |
| const QBrush & | brush () const |
| void | setStyle (CurveStyle style) |
| CurveStyle | style () const |
| void | setSymbol (const QwtIntervalSymbol *) |
| const QwtIntervalSymbol * | symbol () const |
| virtual void | drawSeries (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const override |
| virtual QRectF | boundingRect () const override |
| virtual QwtGraphic | legendIcon (int index, const QSizeF &) const override |
Public Member Functions inherited from QwtPlotSeriesItem | |
| QwtPlotSeriesItem (const QString &title=QString()) | |
| QwtPlotSeriesItem (const QwtText &title) | |
| virtual | ~QwtPlotSeriesItem () |
| Destructor. | |
| void | setOrientation (Qt::Orientation) |
| Qt::Orientation | orientation () const |
| virtual void | draw (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const override |
| Draw the complete series. More... | |
| virtual void | updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &) override |
| Update the item to changes of the axes scale division. More... | |
Public Member Functions inherited from QwtPlotItem | |
| QwtPlotItem () | |
| QwtPlotItem (const QString &title) | |
| QwtPlotItem (const QwtText &title) | |
| virtual | ~QwtPlotItem () |
| Destroy the QwtPlotItem. | |
| void | attach (QwtPlot *plot) |
| Attach the item to a plot. More... | |
| void | detach () |
| This method detaches a QwtPlotItem from any QwtPlot it has been associated with. More... | |
| QwtPlot * | plot () const |
| Return attached plot. | |
| void | setTitle (const QString &title) |
| void | setTitle (const QwtText &title) |
| const QwtText & | title () const |
| void | setItemAttribute (ItemAttribute, bool on=true) |
| bool | testItemAttribute (ItemAttribute) const |
| void | setItemInterest (ItemInterest, bool on=true) |
| bool | testItemInterest (ItemInterest) const |
| void | setRenderHint (RenderHint, bool on=true) |
| bool | testRenderHint (RenderHint) const |
| void | setRenderThreadCount (uint numThreads) |
| uint | renderThreadCount () const |
| void | setLegendIconSize (const QSize &) |
| QSize | legendIconSize () const |
| double | z () const |
| void | setZ (double z) |
| Set the z value. More... | |
| void | show () |
| Show the item. | |
| void | hide () |
| Hide the item. | |
| virtual void | setVisible (bool) |
| bool | isVisible () const |
| void | setAxes (QwtAxisId xAxis, QwtAxisId yAxis) |
| void | setXAxis (QwtAxisId) |
| QwtAxisId | xAxis () const |
| Return xAxis. | |
| void | setYAxis (QwtAxisId) |
| QwtAxisId | yAxis () const |
| Return yAxis. | |
| virtual void | itemChanged () |
| virtual void | legendChanged () |
| virtual void | getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const |
| Calculate a hint for the canvas margin. More... | |
| virtual void | updateLegend (const QwtPlotItem *, const QList< QwtLegendData > &) |
| Update the item to changes of the legend info. More... | |
| QRectF | scaleRect (const QwtScaleMap &, const QwtScaleMap &) const |
| Calculate the bounding scale rectangle of 2 maps. More... | |
| QRectF | paintRect (const QwtScaleMap &, const QwtScaleMap &) const |
| Calculate the bounding paint rectangle of 2 maps. More... | |
| virtual QList< QwtLegendData > | legendData () const |
| Return all information, that is needed to represent the item on the legend. More... | |
Public Member Functions inherited from QwtAbstractSeriesStore | |
| virtual | ~QwtAbstractSeriesStore () |
| Destructor. | |
Public Member Functions inherited from QwtSeriesStore< QwtIntervalSample > | |
| QwtSeriesStore () | |
| Constructor The store contains no series. | |
| ~QwtSeriesStore () | |
| Destructor. | |
| void | setData (QwtSeriesData< QwtIntervalSample > *series) |
| QwtSeriesData< QwtIntervalSample > * | data () |
| const QwtSeriesData< QwtIntervalSample > * | data () const |
| QwtIntervalSample | sample (int index) const |
| virtual size_t | dataSize () const override |
| virtual QRectF | dataRect () const override |
| virtual void | setRectOfInterest (const QRectF &rect) override |
| QwtSeriesData< QwtIntervalSample > * | swapData (QwtSeriesData< QwtIntervalSample > *series) |
Protected Member Functions | |
| void | init () |
| Initialize internal members. | |
| virtual void | drawTube (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const |
| virtual void | drawSymbols (QPainter *, const QwtIntervalSymbol &, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const |
Protected Member Functions inherited from QwtPlotSeriesItem | |
| virtual void | dataChanged () override |
| dataChanged() indicates, that the series has been changed. | |
Protected Member Functions inherited from QwtPlotItem | |
| QwtGraphic | defaultIcon (const QBrush &, const QSizeF &) const |
| Return a default icon from a brush. More... | |
QwtPlotIntervalCurve represents a series of samples, where each value is associated with an interval ( ).
The representation depends on the style() and an optional symbol() that is displayed for each interval. QwtPlotIntervalCurve might be used to display error bars or the area between 2 curves.
Definition at line 27 of file qwt_plot_intervalcurve.h.
| typedef QFlags<PaintAttribute > QwtPlotIntervalCurve::PaintAttributes |
An ORed combination of PaintAttribute values.
Definition at line 77 of file qwt_plot_intervalcurve.h.
Curve styles. The default setting is QwtPlotIntervalCurve::Tube.
| Enumerator | |
|---|---|
| NoCurve | Don't draw a curve. Note: This doesn't affect the symbols. |
| Tube | Build 2 curves from the upper and lower limits of the intervals and draw them with the pen(). The area between the curves is filled with the brush(). |
| UserCurve | Styles >= QwtPlotIntervalCurve::UserCurve are reserved for derived classes that overload drawSeries() with additional application specific curve types. |
Definition at line 38 of file qwt_plot_intervalcurve.h.
Attributes to modify the drawing algorithm.
Definition at line 64 of file qwt_plot_intervalcurve.h.
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explicit |
Constructor
| title | Title of the curve |
Definition at line 90 of file qwt_plot_intervalcurve.cpp.
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explicit |
Constructor
| title | Title of the curve |
Definition at line 80 of file qwt_plot_intervalcurve.cpp.
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overridevirtual |
Reimplemented from QwtPlotSeriesItem.
Definition at line 300 of file qwt_plot_intervalcurve.cpp.
| const QBrush & QwtPlotIntervalCurve::brush | ( | ) | const |
Definition at line 291 of file qwt_plot_intervalcurve.cpp.
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overridevirtual |
Draw a subset of the samples
| painter | Painter |
| xMap | Maps x-values into pixel coordinates. |
| yMap | Maps y-values into pixel coordinates. |
| canvasRect | Contents rectangle of the canvas |
| from | Index of the first sample to be painted |
| to | Index of the last sample to be painted. If to < 0 the series will be painted to its last sample. |
Implements QwtPlotSeriesItem.
Definition at line 322 of file qwt_plot_intervalcurve.cpp.
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protectedvirtual |
Draw symbols for a subset of the samples
| painter | Painter |
| symbol | Interval symbol |
| xMap | x map |
| yMap | y map |
| canvasRect | Contents rectangle of the canvas |
| from | Index of the first sample to be painted |
| to | Index of the last sample to be painted |
Definition at line 487 of file qwt_plot_intervalcurve.cpp.
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protectedvirtual |
Draw a tube
Builds 2 curves from the upper and lower limits of the intervals and draws them with the pen(). The area between the curves is filled with the brush().
| painter | Painter |
| xMap | Maps x-values into pixel coordinates. |
| yMap | Maps y-values into pixel coordinates. |
| canvasRect | Contents rectangle of the canvas |
| from | Index of the first sample to be painted |
| to | Index of the last sample to be painted. If to < 0 the series will be painted to its last sample. |
Definition at line 371 of file qwt_plot_intervalcurve.cpp.
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overridevirtual |
In case of Tube style() the icon is a plain rectangle filled with the brush(). If a symbol is assigned it is scaled to size.
| index | Index of the legend entry ( ignored as there is only one ) |
| size | Icon size |
Reimplemented from QwtPlotItem.
Definition at line 554 of file qwt_plot_intervalcurve.cpp.
| const QPen & QwtPlotIntervalCurve::pen | ( | ) | const |
Definition at line 263 of file qwt_plot_intervalcurve.cpp.
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overridevirtual |
Reimplemented from QwtPlotItem.
Definition at line 115 of file qwt_plot_intervalcurve.cpp.
| void QwtPlotIntervalCurve::setBrush | ( | const QBrush & | brush | ) |
Assign a brush.
The brush is used to fill the area in Tube style().
| brush | Brush |
Definition at line 276 of file qwt_plot_intervalcurve.cpp.
| void QwtPlotIntervalCurve::setPaintAttribute | ( | PaintAttribute | attribute, |
| bool | on = true |
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| ) |
Specify an attribute how to draw the curve
| attribute | Paint attribute |
| on | On/Off |
Definition at line 127 of file qwt_plot_intervalcurve.cpp.
| void QwtPlotIntervalCurve::setPen | ( | const QColor & | color, |
| qreal | width = 0.0, |
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| Qt::PenStyle | style = Qt::SolidLine |
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| ) |
Build and assign a pen
In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility.
| color | Pen color |
| width | Pen width |
| style | Pen style |
Definition at line 238 of file qwt_plot_intervalcurve.cpp.
| void QwtPlotIntervalCurve::setPen | ( | const QPen & | pen | ) |
| void QwtPlotIntervalCurve::setSamples | ( | const QVector< QwtIntervalSample > & | samples | ) |
Initialize data with an array of samples.
| samples | Vector of samples |
Definition at line 150 of file qwt_plot_intervalcurve.cpp.
| void QwtPlotIntervalCurve::setSamples | ( | QwtSeriesData< QwtIntervalSample > * | data | ) |
Assign a series of samples
setSamples() is just a wrapper for setData() without any additional value - beside that it is easier to find for the developer.
| data | Data |
Definition at line 166 of file qwt_plot_intervalcurve.cpp.
| void QwtPlotIntervalCurve::setStyle | ( | CurveStyle | style | ) |
Set the curve's drawing style
| style | Curve style |
Definition at line 178 of file qwt_plot_intervalcurve.cpp.
| void QwtPlotIntervalCurve::setSymbol | ( | const QwtIntervalSymbol * | symbol | ) |
Assign a symbol.
| symbol | Symbol |
Definition at line 204 of file qwt_plot_intervalcurve.cpp.
| QwtPlotIntervalCurve::CurveStyle QwtPlotIntervalCurve::style | ( | ) | const |
Definition at line 193 of file qwt_plot_intervalcurve.cpp.
| const QwtIntervalSymbol * QwtPlotIntervalCurve::symbol | ( | ) | const |
Definition at line 220 of file qwt_plot_intervalcurve.cpp.
| bool QwtPlotIntervalCurve::testPaintAttribute | ( | PaintAttribute | attribute | ) | const |
Definition at line 140 of file qwt_plot_intervalcurve.cpp.